技术领域Technical Field
本公开涉及新能源车辆领域，具体地，涉及一种接触器状态的确定方法、装置、电池管理系统及车辆。The present disclosure relates to the field of new energy vehicles, and in particular, to a method and device for determining a contactor state, a battery management system, and a vehicle.
背景技术Background Art
目前，新能源车辆已经成为当今车辆发展的新方向，电动车辆的电能由动力电池提供。动力电池的控制回路通常包括主正接触器、主负接触器和预充接触器。在相关技术中，动力电池的控制回路通常采用主正接触器与预充接触器并联，当正极一侧接触器发生粘连故障时，无法确定主正接触器还是预充接触器发生粘连，造成了安全隐患。At present, new energy vehicles have become the new direction of vehicle development today. The electric energy of electric vehicles is provided by power batteries. The control circuit of the power battery usually includes a main positive contactor, a main negative contactor and a pre-charge contactor. In the relevant technology, the control circuit of the power battery usually uses a main positive contactor and a pre-charge contactor in parallel. When the contactor on the positive side has a adhesion failure, it is impossible to determine whether the main positive contactor or the pre-charge contactor has adhesion, which creates a safety hazard.
发明内容Summary of the invention
本公开的目的是提供一种能够确定控制回路各接触器状态的接触器状态的确定方法、装置、电池管理系统及车辆。The purpose of the present disclosure is to provide a contactor status determination method, device, battery management system and vehicle capable of determining the status of each contactor in a control loop.
为了实现上述目的，本公开提供一种接触器状态的确定方法，电池模组的正极接总正接触器，所述电池模组的负极接总负接触器，预充接触器的一端与所述总负接触器的前端连接，所述预充接触器的另一端通过预充电阻与所述总负接触器的后端连接，所述总负接触器的后端通过检测电路连接至检测电源的正极，所述方法包括：In order to achieve the above-mentioned object, the present disclosure provides a method for determining the contactor state, wherein the positive electrode of the battery module is connected to the total positive contactor, the negative electrode of the battery module is connected to the total negative contactor, one end of the pre-charge contactor is connected to the front end of the total negative contactor, the other end of the pre-charge contactor is connected to the rear end of the total negative contactor through a pre-charge resistor, and the rear end of the total negative contactor is connected to the positive electrode of the detection power supply through a detection circuit, and the method comprises:
在接收到用于指示将所述电池模组的负极侧接触器断开的第一断开指令的情况下，获取所述检测电路中预定的第一节点的电压；Upon receiving a first disconnection instruction for instructing to disconnect the negative electrode side contactor of the battery module, obtaining a voltage of a predetermined first node in the detection circuit;
根据所述第一节点的电压确定所述总负接触器和所述预充接触器的状态。The states of the total negative contactor and the pre-charging contactor are determined according to the voltage of the first node.
可选地，所述根据所述第一节点的电压确定所述总负接触器和所述预充接触器的状态，包括：Optionally, determining the states of the total negative contactor and the pre-charging contactor according to the voltage of the first node includes:
若所述第一节点的电压大于预定的第一电压阈值且小于预定的第二电压阈值，则确定所述总负接触器粘连，所述总负接触器未粘连；If the voltage of the first node is greater than a predetermined first voltage threshold and less than a predetermined second voltage threshold, it is determined that the total negative contactor is stuck and the total negative contactor is not stuck;
若所述第一节点的电压大于或等于所述第二电压阈值，则确定所述预充接触器粘连。If the voltage of the first node is greater than or equal to the second voltage threshold, it is determined that the pre-charging contactor is stuck.
可选地，所述检测电路为分压电路，所述分压电路包括串联连接的第一电阻和第二电阻，所述第一节点为所述第一电阻和所述第二电阻之间的节点。Optionally, the detection circuit is a voltage divider circuit, the voltage divider circuit includes a first resistor and a second resistor connected in series, and the first node is a node between the first resistor and the second resistor.
可选地，所述总正接触器接快充正接触器的第一端，所述快充正接触器的第二端接快充端口的正极，所述总负接触器接快充负接触器的第一端，所述快充负接触器的第二端接快充端口的负极，所述方法还包括：Optionally, the total positive contactor is connected to a first end of a fast-charging positive contactor, a second end of the fast-charging positive contactor is connected to a positive electrode of a fast-charging port, the total negative contactor is connected to a first end of a fast-charging negative contactor, and a second end of the fast-charging negative contactor is connected to a negative electrode of a fast-charging port, and the method further comprises:
在接收到用于指示将所述快充正接触器断开的第二断开指令的情况下，获取第一电压和第二电压，所述第一电压为所述快充正接触器的第一端和所述检测电路中预定的第二节点之间的电压，所述第二电压为所述快充正接触器的第二端和所述第二节点之间的电压；In the case of receiving a second disconnection instruction for instructing to disconnect the fast-charging positive contactor, obtaining a first voltage and a second voltage, wherein the first voltage is a voltage between a first end of the fast-charging positive contactor and a predetermined second node in the detection circuit, and the second voltage is a voltage between a second end of the fast-charging positive contactor and the second node;
若所述第一电压与所述第二电压的差值小于预定的差值阈值，则确定所述快充正接触器粘连。If the difference between the first voltage and the second voltage is less than a predetermined difference threshold, it is determined that the fast charging positive contactor is stuck.
可选地，所述方法还包括：Optionally, the method further comprises:
在接收到用于指示将所述快充负接触器断开的第三断开指令的情况下，获取第三电压和第四电压，所述第三电压为所述快充负接触器的第一端和所述检测电路中预定的第三节点之间的电压，所述第四电压为所述快充负接触器的第二端和所述第三节点之间的电压；In the case of receiving a third disconnection instruction for instructing to disconnect the fast-charge negative contactor, obtaining a third voltage and a fourth voltage, wherein the third voltage is a voltage between a first end of the fast-charge negative contactor and a predetermined third node in the detection circuit, and the fourth voltage is a voltage between a second end of the fast-charge negative contactor and the third node;
若所述第三电压与所述第四电压的差值小于所述差值阈值，则确定所述快充负接触器粘连。If the difference between the third voltage and the fourth voltage is less than the difference threshold, it is determined that the fast charging negative contactor is stuck.
可选地，所述方法还包括：Optionally, the method further comprises:
在接收到用于指示将所述总正接触器断开的第四断开指令的情况下，获取第五电压和第六电压，所述第五电压为所述电池模组的正极和负极之间的电压，所述第六电压为所述电池模组的负极与所述总正接触器后端之间的电压；Upon receiving a fourth disconnection instruction for instructing to disconnect the total positive contactor, obtaining a fifth voltage and a sixth voltage, wherein the fifth voltage is the voltage between the positive electrode and the negative electrode of the battery module, and the sixth voltage is the voltage between the negative electrode of the battery module and the rear end of the total positive contactor;
若所述第五电压与所述第六电压的差值小于预定的差值阈值，则确定所述总正接触器粘连。If the difference between the fifth voltage and the sixth voltage is less than a predetermined difference threshold, it is determined that the total positive contactor is stuck.
本公开还提供一种接触器状态的确定装置，所述装置包括检测电路和控制器，电池模组的正极接总正接触器，电池模组的负极接总负接触器，预充接触器的一端与所述总负接触器的前端连接，预充接触器的另一端通过所述预充电阻与所述总负接触器的后端连接，所述总负接触器的后端通过所述检测电路连接至检测电源的正极，所述控制器用于：The present disclosure also provides a device for determining a contactor state, the device comprising a detection circuit and a controller, the positive electrode of the battery module is connected to the total positive contactor, the negative electrode of the battery module is connected to the total negative contactor, one end of the pre-charge contactor is connected to the front end of the total negative contactor, the other end of the pre-charge contactor is connected to the rear end of the total negative contactor through the pre-charge resistor, the rear end of the total negative contactor is connected to the positive electrode of the detection power supply through the detection circuit, and the controller is used to:
在接收到用于指示将所述总负接触器断开的第一断开指令的情况下，获取所述检测电路中预定的第一节点的电压；Upon receiving a first disconnection instruction for instructing to disconnect the total negative contactor, obtaining a voltage of a predetermined first node in the detection circuit;
根据所述第一节点的电压确定所述总负接触器和所述预充接触器的状态。The states of the total negative contactor and the pre-charging contactor are determined according to the voltage of the first node.
可选地，所述控制器还用于：Optionally, the controller is further configured to:
若所述第一节点的电压大于预定的第一电压阈值且小于预定的第二电压阈值，则确定所述总负接触器粘连；If the voltage of the first node is greater than a predetermined first voltage threshold and less than a predetermined second voltage threshold, determining that the total negative contactor is stuck;
若所述第一节点的电压大于或等于所述第二电压阈值，则确定所述预充接触器粘连，所述总负接触器未粘连。If the voltage of the first node is greater than or equal to the second voltage threshold, it is determined that the pre-charge contactor is stuck and the total negative contactor is not stuck.
可选地，所述检测电路为分压电路，所述分压电路包括串联连接的第一电阻和第二电阻，所述第一节点为所述第一电阻和所述第二电阻之间的节点。Optionally, the detection circuit is a voltage divider circuit, the voltage divider circuit includes a first resistor and a second resistor connected in series, and the first node is a node between the first resistor and the second resistor.
可选地，所述总正接触器接快充正接触器的第一端，所述快充正接触器的第二端接快充端口的正极，所述总负接触器接快充负接触器的第一端，所述快充负接触器的第二端接快充端口的负极，所述控制器还用于：Optionally, the total positive contactor is connected to the first end of the fast charging positive contactor, the second end of the fast charging positive contactor is connected to the positive pole of the fast charging port, the total negative contactor is connected to the first end of the fast charging negative contactor, the second end of the fast charging negative contactor is connected to the negative pole of the fast charging port, and the controller is further used for:
在接收到用于指示将所述快充正接触器断开的第二断开指令的情况下，获取第一电压和第二电压，所述第一电压为所述快充正接触器的第一端和所述检测电路中预定的第二节点之间的电压，所述第二电压为所述快充正接触器的第二端和所述第二节点之间的电压；In the case of receiving a second disconnection instruction for instructing to disconnect the fast-charging positive contactor, obtaining a first voltage and a second voltage, wherein the first voltage is a voltage between a first end of the fast-charging positive contactor and a predetermined second node in the detection circuit, and the second voltage is a voltage between a second end of the fast-charging positive contactor and the second node;
若所述第一电压与所述第二电压的差值小于预定的差值阈值，则确定所述快充正接触器粘连。If the difference between the first voltage and the second voltage is less than a predetermined difference threshold, it is determined that the fast charging positive contactor is stuck.
可选地，所述控制器还用于：Optionally, the controller is further configured to:
在接收到用于指示将所述快充负接触器断开的第三断开指令的情况下，获取第三电压和第四电压，所述第三电压为所述快充负接触器的第一端和所述检测电路中预定的第三节点之间的电压，所述第四电压为所述快充负接触器的第二端和所述第三节点之间的电压；In the case of receiving a third disconnection instruction for instructing to disconnect the fast-charge negative contactor, obtaining a third voltage and a fourth voltage, wherein the third voltage is a voltage between a first end of the fast-charge negative contactor and a predetermined third node in the detection circuit, and the fourth voltage is a voltage between a second end of the fast-charge negative contactor and the third node;
若所述第三电压与所述第四电压的差值小于所述差值阈值，则确定所述快充负接触器粘连。If the difference between the third voltage and the fourth voltage is less than the difference threshold, it is determined that the fast charging negative contactor is stuck.
可选地，所述控制器还用于：Optionally, the controller is further configured to:
在接收到用于指示将所述总正接触器断开的第四断开指令的情况下，获取第五电压和第六电压，所述第五电压为所述电池模组的正极和负极之间的电压，所述第六电压为所述电池模组的负极与所述总正接触器后端之间的电压；Upon receiving a fourth disconnection instruction for instructing to disconnect the total positive contactor, obtaining a fifth voltage and a sixth voltage, wherein the fifth voltage is the voltage between the positive electrode and the negative electrode of the battery module, and the sixth voltage is the voltage between the negative electrode of the battery module and the rear end of the total positive contactor;
若所述第五电压与所述第六电压的差值小于预定的差值阈值，则确定所述总正接触器粘连。If the difference between the fifth voltage and the sixth voltage is less than a predetermined difference threshold, it is determined that the total positive contactor is stuck.
本公开还提供一种电池管理系统，包括上述的接触器状态的确定装置。The present disclosure also provides a battery management system, including the above-mentioned device for determining the contactor state.
本公开还提供一种车辆，包括电池模组和上述的电池管理系统。The present disclosure also provides a vehicle, including a battery module and the above-mentioned battery management system.
通过上述技术方案，预充接触器连接在总负接触器一端，在总负接触器的后端设置检测电路和检测电源，当接收到用于指示将电池模组的负极侧接触器断开的第一断开指令时，在不依赖于总电压是否存在的情况下，能够根据检测电路中第一节点的电压可靠、精准地确定总负接触器和预充接触器的状态，从而区分总负接触器粘连故障和预充接触器粘连故障，提高了车辆的安全性能。Through the above technical solution, the pre-charging contactor is connected to one end of the main negative contactor, and a detection circuit and a detection power supply are arranged at the rear end of the main negative contactor. When a first disconnection instruction for instructing to disconnect the negative side contactor of the battery module is received, the state of the main negative contactor and the pre-charging contactor can be reliably and accurately determined according to the voltage of the first node in the detection circuit without depending on whether the total voltage exists, thereby distinguishing between the adhesion failure of the main negative contactor and the adhesion failure of the pre-charging contactor, thereby improving the safety performance of the vehicle.
本公开的其他特征和优点将在随后的具体实施方式部分予以详细说明。Other features and advantages of the present disclosure will be described in detail in the following detailed description.
附图说明BRIEF DESCRIPTION OF THE DRAWINGS
附图是用来提供对本公开的进一步理解，并且构成说明书的一部分，与下面的具体实施方式一起用于解释本公开，但并不构成对本公开的限制。在附图中：The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings:
图1是一示例性实施例提供的接触器状态的确定方法的电路示意图。FIG. 1 is a circuit diagram of a method for determining a contactor state provided by an exemplary embodiment.
图2是一示例性实施例提供的接触器状态的确定方法的流程图。FIG. 2 is a flow chart of a method for determining a contactor state provided by an exemplary embodiment.
图3是又一示例性实施例提供的接触器状态的确定方法的电路示意图。FIG. 3 is a circuit diagram of a method for determining a contactor state provided by yet another exemplary embodiment.
图4是一示例性实施例提供的接触器状态的确定装置的框图。FIG. 4 is a block diagram of a device for determining a contactor state provided by an exemplary embodiment.
附图标记说明Description of Reference Numerals
1控制器 2检测电路 3总正接触器1 Controller 2 Detection circuit 3 Total positive contactor
4总负接触器 5预充接触器 6预充电阻4 Total negative contactor 5 Pre-charge contactor 6 Pre-charge resistor
7第一电阻 8第二电阻 9快充正接触器7First resistor 8Second resistor 9Fast charging positive contactor
10快充负接触器 100接触器状态的确定装置10Fast charging negative contactor 100Device for determining the contactor status
9a快充正接触器的第一端 9b快充正接触器的第二端9a First end of the fast charging positive contactor 9b Second end of the fast charging positive contactor
10a快充负接触器的第一端 10b快充负接触器的第二端10a The first end of the fast charging negative contactor 10b The second end of the fast charging negative contactor
11电池模组11Battery Module
具体实施方式DETAILED DESCRIPTION
以下结合附图对本公开的具体实施方式进行详细说明。应当理解的是，此处所描述的具体实施方式仅用于说明和解释本公开，并不用于限制本公开。The specific implementation of the present disclosure is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the present disclosure, and is not used to limit the present disclosure.
需要说明的是，本公开中所有获取信号、信息或数据的动作都是在遵照所在地国家相应的数据保护法规政策的前提下，并获得由相应装置所有者给予授权的情况下进行的。It should be noted that all actions of acquiring signals, information or data in the present disclosure are carried out in compliance with the relevant data protection laws and policies of the country where the device is located and with the authorization given by the owner of the corresponding device.
图1是一示例性实施例提供的接触器状态的确定方法的电路示意图。如图1所示，电池模组11的正极(V+)接总正接触器3，电池模组11的负极(V-)接总负接触器4，预充接触器5的一端与总负接触器4的前端(靠近电池模组11的一端)连接，预充接触器5的另一端通过预充电阻6与总负接触器4的后端(远离电池模组11的一端)连接，总负接触器4的后端通过检测电路2连接至检测电源(Vcc)的正极。Fig. 1 is a circuit diagram of a method for determining the contactor state provided by an exemplary embodiment. As shown in Fig. 1, the positive electrode (V+) of the battery module 11 is connected to the total positive contactor 3, the negative electrode (V-) of the battery module 11 is connected to the total negative contactor 4, one end of the pre-charge contactor 5 is connected to the front end of the total negative contactor 4 (the end close to the battery module 11), and the other end of the pre-charge contactor 5 is connected to the rear end of the total negative contactor 4 (the end away from the battery module 11) through the pre-charge resistor 6, and the rear end of the total negative contactor 4 is connected to the positive electrode of the detection power supply (Vcc) through the detection circuit 2.
也就是，本公开中将预充接触器5设置在电池模组11的负极一侧，新增加了检测电路2和检测电源。That is, in the present disclosure, the pre-charging contactor 5 is disposed on the negative electrode side of the battery module 11, and a detection circuit 2 and a detection power supply are newly added.
图2是一示例性实施例提供的接触器状态的确定方法的流程图。如图1所示，该方法包括以下步骤。Fig. 2 is a flow chart of a method for determining a contactor state provided by an exemplary embodiment. As shown in Fig. 1 , the method includes the following steps.
在步骤S101中，在接收到用于指示将电池模组11的负极侧接触器断开的第一断开指令的情况下，获取检测电路中预定的第一节点的电压。In step S101 , when a first disconnection instruction for instructing to disconnect the negative electrode side contactor of the battery module 11 is received, a voltage of a predetermined first node in the detection circuit is acquired.
电池模组11的负极侧接触器包括总负接触器4和预充接触器5。在相关技术中，多种车辆的工况下均会生成指示将电池模组11的负极侧接触器断开的第一断开指令。例如，在车辆下电过程中，需要控制断开电池模组11回路中的全部接触器断开，此时会生成用于指示将电池模组11负极侧接触器断开的第一断开指令。The negative side contactor of the battery module 11 includes a total negative contactor 4 and a pre-charge contactor 5. In the related art, a first disconnection instruction instructing to disconnect the negative side contactor of the battery module 11 is generated under various vehicle operating conditions. For example, during the vehicle power-off process, it is necessary to control all the contactors in the disconnection circuit of the battery module 11 to be disconnected, and at this time, a first disconnection instruction for instructing to disconnect the negative side contactor of the battery module 11 is generated.
当接收到第一断开指令时，可以获取检测电路2中预定的第一节点的电压。第一节点可以是检测电路2中由设计人员预先设定的节点。第一节点的电压的获取方法可以利用本领域技术人员所公知的方法，其具体原理于此不再赘述。When the first disconnection instruction is received, the voltage of the predetermined first node in the detection circuit 2 can be obtained. The first node can be a node preset by a designer in the detection circuit 2. The method for obtaining the voltage of the first node can use a method known to those skilled in the art, and its specific principle is not repeated here.
在步骤S102中，根据第一节点的电压确定总负接触器和预充接触器的状态。In step S102, the states of the total negative contactor and the pre-charge contactor are determined according to the voltage of the first node.
接触器的状态包括粘连状态和非粘连状态。在总负接触器4的后端设置检测电路2和检测电源，检测电源的负极可以连接电源模组11的负极。当接收到用于指示将电池模组11的负极侧接触器断开的第一断开指令时，在预充接触器5与总负接触器4均无故障的情况下，二者均应断开。若预充接触器5为连接状态，则可以确定预充接触器5为粘连状态，若总负接触器4为连接状态，则可以确定总负接触器4为粘连状态。而预充接触器5与总负接触器4是否为连接状态可以通过检测电路中预定的第一节点的电压来进行判断。The state of the contactor includes an adhesion state and a non-adhesion state. A detection circuit 2 and a detection power supply are set at the rear end of the total negative contactor 4, and the negative pole of the detection power supply can be connected to the negative pole of the power module 11. When a first disconnection instruction is received for instructing the disconnection of the negative side contactor of the battery module 11, both the pre-charge contactor 5 and the total negative contactor 4 should be disconnected when there is no fault in the pre-charge contactor 5 and the total negative contactor 4. If the pre-charge contactor 5 is in a connected state, it can be determined that the pre-charge contactor 5 is in an adhesion state, and if the total negative contactor 4 is in a connected state, it can be determined that the total negative contactor 4 is in an adhesion state. Whether the pre-charge contactor 5 and the total negative contactor 4 are in a connected state can be judged by the voltage of a predetermined first node in the detection circuit.
通过上述技术方案，预充接触器连接在总负接触器一端，在总负接触器的后端设置检测电路和检测电源，当接收到用于指示将总负接触器断开的第一断开指令时，在不依赖于总电压是否存在的情况下，能够根据检测电路中第一节点的电压可靠、精准地确定总负接触器和预充接触器的状态，从而区分总负接触器粘连故障和预充接触器粘连故障，提高了车辆的安全性能。Through the above technical solution, the pre-charge contactor is connected to one end of the main negative contactor, and a detection circuit and a detection power supply are arranged at the rear end of the main negative contactor. When a first disconnection instruction for instructing to disconnect the main negative contactor is received, the state of the main negative contactor and the pre-charge contactor can be reliably and accurately determined according to the voltage of the first node in the detection circuit without depending on whether the total voltage exists, thereby distinguishing between the adhesion fault of the main negative contactor and the adhesion fault of the pre-charge contactor, thereby improving the safety performance of the vehicle.
具体地，若总负接触器4和预充接触器5均断开，检测电源的正极与电源模组的负极(也是检测电源的负极)之间未形成通路，则第一节点的电压为零，因此，若第一节点的电压为零，则可以判定总负接触器和预充接触器均断开；若总负接触器4粘连，检测电源的正极与负极之间形成通路，总负接触器将预充接触器及预充电阻短接，检测电路中有电流，且预充电阻未分压，第一节点的电压为第一节点与电池模组负极之间的电势差，第一节点的电压可以根据检测电路的结构计算得出，因此，若第一节点的电压为该计算得到的电压，则可以判定总负接触器4粘连，但预充接触器5是否粘连并不能确定；若总负接触器4断开且预充接触器5粘连，检测电源的正极和负极之间通过预充电阻6、预充接触器5以及检测电路2形成通路，第一节点的电压为第一节点到电池模组负极之间的电势差，第一节点的电压可以根据检测电路和预充电阻的结构计算得出，因此，若第一节点的电压为该计算得到的电压，则可以判定预充接触器5粘连。Specifically, if the total negative contactor 4 and the pre-charging contactor 5 are both disconnected, and no path is formed between the positive pole of the detection power supply and the negative pole of the power supply module (which is also the negative pole of the detection power supply), the voltage of the first node is zero. Therefore, if the voltage of the first node is zero, it can be determined that the total negative contactor and the pre-charging contactor are both disconnected; if the total negative contactor 4 is adhered, a path is formed between the positive and negative poles of the detection power supply, the total negative contactor short-circuits the pre-charging contactor and the pre-charging resistor, there is current in the detection circuit, and the pre-charging resistor is not voltage-divided, the voltage of the first node is the potential difference between the first node and the negative pole of the battery module, and the voltage of the first node can be determined according to the detection circuit Therefore, if the voltage of the first node is the calculated voltage, it can be determined that the total negative contactor 4 is stuck, but it cannot be determined whether the pre-charging contactor 5 is stuck; if the total negative contactor 4 is disconnected and the pre-charging contactor 5 is stuck, a path is formed between the positive and negative poles of the detection power supply through the pre-charging resistor 6, the pre-charging contactor 5 and the detection circuit 2. The voltage of the first node is the potential difference between the first node and the negative pole of the battery module. The voltage of the first node can be calculated according to the structure of the detection circuit and the pre-charging resistor. Therefore, if the voltage of the first node is the calculated voltage, it can be determined that the pre-charging contactor 5 is stuck.
在又一实施例中，上述根据第一节点的电压确定总负接触器4和预充接触器5的状态，包括：In another embodiment, the above-mentioned determining the states of the total negative contactor 4 and the pre-charging contactor 5 according to the voltage of the first node includes:
若第一节点的电压大于预定的第一电压阈值且小于预定的第二电压阈值，则确定总负接触器4粘连；If the voltage of the first node is greater than a predetermined first voltage threshold and less than a predetermined second voltage threshold, it is determined that the total negative contactor 4 is stuck;
若第一节点的电压大于或等于第二电压阈值，则确定预充接触器5粘连，总负接触器4未粘连。If the voltage of the first node is greater than or equal to the second voltage threshold, it is determined that the pre-charging contactor 5 is stuck and the total negative contactor 4 is not stuck.
如上所述，可以根据预充电阻6、检测电路2的电路结构以及其中第一节点的位置，预先分别计算出在总负接触器4未断开(粘连)情况下以及预充接触器5未断开(粘连)情况下第一节点的电压。可以预先设置允许的误差范围，当实际获取的第一节点的电压等于在总负接触器4粘连情况下预先计算出的第一节点的电压(在误差范围内)时，确定此时总负接触器4的状态为粘连状态；当实际获取的第一节点的电压等于在预充接触器5粘连情况下预先计算出的第一节点的电压(在误差范围内)时，确定此时预充接触器5的状态为粘连状态。As described above, the voltage of the first node when the total negative contactor 4 is not disconnected (adhered) and the pre-charge contactor 5 is not disconnected (adhered) can be pre-calculated according to the circuit structure of the pre-charge resistor 6, the detection circuit 2, and the position of the first node. The allowable error range can be pre-set, and when the voltage of the first node actually obtained is equal to the voltage of the first node pre-calculated when the total negative contactor 4 is adhered (within the error range), it is determined that the state of the total negative contactor 4 is the adhesion state at this time; when the voltage of the first node actually obtained is equal to the voltage of the first node pre-calculated when the pre-charge contactor 5 is adhered (within the error range), it is determined that the state of the pre-charge contactor 5 is the adhesion state at this time.
该实施例中，若第一节点的电压大于第一电压阈值且小于第二电压阈值，则可以认为第一节点的电压在误差允许的范围内等于在总负接触器4粘连情况下预先计算出的第一节点的电压，此时可判定总负接触器4粘连；若第一节点的电压大于或等于第二电压阈值，则可以认为第一节点的电压在误差允许的范围内等于在预充接触器5粘连情况下预先计算出的第一节点的电压，此时可判定预充接触器5粘连。In this embodiment, if the voltage of the first node is greater than the first voltage threshold and less than the second voltage threshold, it can be considered that the voltage of the first node is equal to the voltage of the first node pre-calculated in the case of adhesion of the total negative contactor 4 within the allowable error range, and the total negative contactor 4 can be determined to be stuck at this time; if the voltage of the first node is greater than or equal to the second voltage threshold, it can be considered that the voltage of the first node is equal to the voltage of the first node pre-calculated in the case of adhesion of the pre-charge contactor 5 within the allowable error range, and the pre-charge contactor 5 can be determined to be stuck at this time.
在此实施例中，将第一节点的电压与预先确定的第一电压阈值和第二电压阈值这二者进行比较，能够准确地、可靠地区分出总负接触器粘连和预充接触器粘连。In this embodiment, the voltage of the first node is compared with both the predetermined first voltage threshold and the second voltage threshold, so that the total negative contactor sticking and the pre-charge contactor sticking can be accurately and reliably distinguished.
在又一实施例中，上述检测电路2为分压电路。分压电路可以包括多个串联的电阻，多个电阻的阻值可以相同，也可以不同，由设计人员预先设定。图3是又一示例性实施例提供的接触器状态的确定方法的电路示意图。如图3所示，分压电路2包括串联连接的第一电阻7和第二电阻8，第一节点为第一电阻7和第二电阻8之间的节点。In another embodiment, the detection circuit 2 is a voltage divider circuit. The voltage divider circuit may include multiple resistors connected in series, and the resistance values of the multiple resistors may be the same or different, which are preset by the designer. FIG3 is a circuit diagram of a method for determining a contactor state provided by another exemplary embodiment. As shown in FIG3, the voltage divider circuit 2 includes a first resistor 7 and a second resistor 8 connected in series, and the first node is a node between the first resistor 7 and the second resistor 8.
当总负接触器4或预充接触器5粘连时，检测电源的正极与负极之间形成通路。当总负接触器4粘连时，第一电阻7与第二电阻8进行分压；当总负接触器4未粘连，预充接触器5粘连时，预充电阻6、第一电阻7与第二电阻8进行分压。When the total negative contactor 4 or the pre-charge contactor 5 is adhered, a path is formed between the positive and negative electrodes of the detection power supply. When the total negative contactor 4 is adhered, the first resistor 7 and the second resistor 8 divide the voltage; when the total negative contactor 4 is not adhered and the pre-charge contactor 5 is adhered, the pre-charge resistor 6, the first resistor 7 and the second resistor 8 divide the voltage.
可以计算实际的分压电路计算得到上述的第一电压阈值且小于第二电压阈值。例如，检测电源电压为5V，第一电阻7与第二电阻8的阻值相等，则当总负接触器4粘连时，理想情况下，第一节点电压为2.5V，当预充接触器5粘连时，理想情况下，第一节点电压为大于2.5V，可以将第一电压阈值和第二电压阈值分别设置为2.4V和2.6V。The actual voltage divider circuit can be calculated to obtain the above-mentioned first voltage threshold value and be less than the second voltage threshold value. For example, if the detection power supply voltage is 5V, the resistance values of the first resistor 7 and the second resistor 8 are equal, then when the total negative contactor 4 is adhered, ideally, the first node voltage is 2.5V, and when the pre-charge contactor 5 is adhered, ideally, the first node voltage is greater than 2.5V, and the first voltage threshold value and the second voltage threshold value can be set to 2.4V and 2.6V respectively.
在该实施例中，通过将串联的第一电阻和第二电阻形成的分压电路作为检测电路，方法简单，可靠性高。In this embodiment, a voltage divider circuit formed by a first resistor and a second resistor connected in series is used as a detection circuit, which has a simple method and high reliability.
如图3所示，在电池模组11的回路中还可以包括快充正接触器9和快充负接触器10，分别与快充端口的正极(V1+)和快充端口的负极(V1-)连接。快充正极端口和快充负极端口用于连接充电枪，对电池模组11进行充电。As shown in FIG3 , the circuit of the battery module 11 may also include a fast charge positive contactor 9 and a fast charge negative contactor 10, which are connected to the positive electrode (V1+) of the fast charge port and the negative electrode (V1-) of the fast charge port, respectively. The fast charge positive port and the fast charge negative port are used to connect a charging gun to charge the battery module 11.
在又一实施例中，上述总正接触器3接快充正接触器9的第一端9a，快充正接触器9的第二端9b接快充端口的正极(V1+)，总负接触器4接快充负接触器10的第一端10a，快充负接触器10的第二端10b接快充端口的负极(V1-)。该方法还包括：In another embodiment, the total positive contactor 3 is connected to the first end 9a of the fast charging positive contactor 9, the second end 9b of the fast charging positive contactor 9 is connected to the positive pole (V1+) of the fast charging port, the total negative contactor 4 is connected to the first end 10a of the fast charging negative contactor 10, and the second end 10b of the fast charging negative contactor 10 is connected to the negative pole (V1-) of the fast charging port. The method also includes:
在接收到用于指示将快充正接触器9断开的第二断开指令的情况下，获取第一电压和第二电压，第一电压为快充正接触器9的第一端9a和检测电路2中预定的第二节点之间的电压，第二电压为快充正接触器9的第二端9b和第二节点之间的电压；When receiving a second disconnection instruction for instructing to disconnect the fast-charging positive contactor 9, a first voltage and a second voltage are obtained, wherein the first voltage is a voltage between a first end 9a of the fast-charging positive contactor 9 and a predetermined second node in the detection circuit 2, and the second voltage is a voltage between a second end 9b of the fast-charging positive contactor 9 and the second node;
若第一电压与第二电压的差值小于预定的差值阈值，则确定快充正接触器9粘连。If the difference between the first voltage and the second voltage is less than a predetermined difference threshold, it is determined that the fast-charging positive contactor 9 is stuck.
在相关技术中，多种车辆的工况下均会生成指示将快充正接触器9断开的第二断开指令。例如，在车辆充电结束后，或者，当快充端口发生故障需停止充电时。In the related art, a second disconnection instruction instructing to disconnect the fast charging positive contactor 9 is generated under various vehicle operating conditions. For example, after the vehicle charging is completed, or when the fast charging port fails and charging needs to be stopped.
差值阈值可以由设计人员预先设定，例如可以为0.1V。第二节点可以为检测电路中的任一节点。在电池模组回路中有电压的情况下，若接收到用于指示将快充正接触器断开的第二断开指令，在正常的情况下，快充正接触器应断开，第二电压为零而第一电压不为零，二者具有一定的差值。若第一电压与第二电压的差值小于预定的差值阈值，则可以认为第一电压与第二电压基本相等(快充正接触器自身因元器件老化、环境湿度等原因可能存在微小电阻)，此时快充正接触器两端的电压基本相等，可以确定快充正接触器粘连；若第一电压与第二电压的差值大于预定的差值阈值，则可以认为第一电压与第二电压不相等，此时快充正接触器两端的电压不相等，可以确定快充正接触器未粘连。The difference threshold can be preset by the designer, for example, it can be 0.1V. The second node can be any node in the detection circuit. In the case where there is voltage in the battery module circuit, if a second disconnection instruction is received to indicate that the fast charging positive contactor is disconnected, under normal circumstances, the fast charging positive contactor should be disconnected, the second voltage is zero and the first voltage is not zero, and the two have a certain difference. If the difference between the first voltage and the second voltage is less than the predetermined difference threshold, it can be considered that the first voltage is substantially equal to the second voltage (the fast charging positive contactor itself may have a small resistance due to aging of components, environmental humidity, etc.), at which time the voltages at both ends of the fast charging positive contactor are substantially equal, and it can be determined that the fast charging positive contactor is adhered; if the difference between the first voltage and the second voltage is greater than the predetermined difference threshold, it can be considered that the first voltage is unequal to the second voltage, at which time the voltages at both ends of the fast charging positive contactor are unequal, and it can be determined that the fast charging positive contactor is not adhered.
在该实施例中，通过检测电路中预定节点分别与快充正接触器两端的电压的比较，可靠、精准地确定出快充接触器是否粘连，方法简单，可靠性高。In this embodiment, by comparing the voltages of predetermined nodes in the detection circuit with the voltages at both ends of the fast-charging positive contactor, it is reliably and accurately determined whether the fast-charging contactor is stuck. The method is simple and has high reliability.
在又一实施例中，该方法还包括：In yet another embodiment, the method further comprises:
在接收到用于指示将快充负接触器10断开的第三断开指令的情况下，获取第三电压和第四电压，第三电压为快充负接触器10的第一端10a和检测电路2中预定的第三节点之间的电压，第四电压为快充负接触器10的第二端10b和第三节点之间的电压；When a third disconnection instruction for instructing to disconnect the fast-charge negative contactor 10 is received, a third voltage and a fourth voltage are obtained, wherein the third voltage is a voltage between the first end 10a of the fast-charge negative contactor 10 and a predetermined third node in the detection circuit 2, and the fourth voltage is a voltage between the second end 10b of the fast-charge negative contactor 10 and the third node;
若第三电压与第四电压的差值小于差值阈值，则确定快充负接触器10粘连。If the difference between the third voltage and the fourth voltage is less than the difference threshold, it is determined that the fast charging negative contactor 10 is stuck.
在相关技术中，多种车辆的工况下均会生成指示将快充负接触器10断开的第三断开指令。例如，在车辆充电结束后，或者，当快充端口发生故障需停止充电时。In the related art, a third disconnection instruction instructing to disconnect the fast charging negative contactor 10 is generated under various vehicle operating conditions. For example, after the vehicle charging is completed, or when the fast charging port fails and charging needs to be stopped.
差值阈值可以由设计人员预先设定，例如可以为0.1V。第三节点可以为检测电路中的任一节点。在电池模组回路中有电压的情况下，若当接收到用于指示将快充负接触器断开的第三断开指令时，在正常的情况下，快充负接触器应断开，第四电压为零而第三电压不为零，二者具有一定的差值。若第三电压与第四电压的差值小于预定的差值阈值，则可以认为第三电压与第四电压基本相等(快充负接触器自身因元器件老化、环境湿度等原因可能存在微小电阻)，此时快充负接触器两端的电压基本相等，可以确定快充负接触器粘连。若第三电压与第四电压的差值大于预定的差值阈值，则可以认为第三电压与第四电压不相等，此时快充负接触器两端的电压不相等，可以确定快充负接触器未粘连。The difference threshold can be preset by the designer, for example, it can be 0.1V. The third node can be any node in the detection circuit. In the case where there is voltage in the battery module circuit, when the third disconnection instruction for instructing the fast charge negative contactor to be disconnected is received, under normal circumstances, the fast charge negative contactor should be disconnected, the fourth voltage is zero and the third voltage is not zero, and the two have a certain difference. If the difference between the third voltage and the fourth voltage is less than the predetermined difference threshold, it can be considered that the third voltage is substantially equal to the fourth voltage (the fast charge negative contactor itself may have a small resistance due to aging of components, environmental humidity, etc.), at which time the voltages at both ends of the fast charge negative contactor are substantially equal, and it can be determined that the fast charge negative contactor is adhered. If the difference between the third voltage and the fourth voltage is greater than the predetermined difference threshold, it can be considered that the third voltage is not equal to the fourth voltage, and the voltages at both ends of the fast charge negative contactor are not equal, and it can be determined that the fast charge negative contactor is not adhered.
在该实施例中，通过检测电路中预定节点分别与快充负接触器两端的电压的比较，可靠、精准地确定出快负接触器是否粘连，方法简单，可靠性高。In this embodiment, by comparing the voltages of predetermined nodes in the detection circuit with the voltages at both ends of the fast charging negative contactor, it is reliably and accurately determined whether the fast charging negative contactor is stuck. The method is simple and has high reliability.
在又一实施例中，该方法还包括：In yet another embodiment, the method further comprises:
在接收到用于指示将总正接触器3断开的第四断开指令的情况下，获取第五电压和第六电压，第五电压为电池模组11的正极和负极之间的电压，第六电压为电池模组11的负极与总正接触器3后端之间的电压；When a fourth disconnection instruction for instructing to disconnect the total positive contactor 3 is received, a fifth voltage and a sixth voltage are obtained, wherein the fifth voltage is the voltage between the positive electrode and the negative electrode of the battery module 11, and the sixth voltage is the voltage between the negative electrode of the battery module 11 and the rear end of the total positive contactor 3;
若第五电压与第六电压的差值小于预定的差值阈值，则确定总正接触器3粘连。If the difference between the fifth voltage and the sixth voltage is smaller than a predetermined difference threshold, it is determined that the main positive contactor 3 is stuck.
在相关技术中，多种车辆的工况下均会生成指示将总正接触器3断开的第四断开指令。例如，在车辆下电过程中，需要控制断开电池模组回路内部全部接触器断开。In the related art, a fourth disconnection instruction for disconnecting the main positive contactor 3 is generated under various vehicle operating conditions. For example, during the vehicle power-off process, it is necessary to control the disconnection of all contactors in the battery module circuit.
第五电压为电池模组的电压，第六电压为电池模组负极与总正接触器后端之间的电压。在电池模组回路中有电压的情况下，当接收到用于指示将总正接触器断开的第四断开指令时，若第五电压与第六电压的差值小于预定的差值阈值，则可以认为第五电压与第六电压基本相等(总正接触器自身因元器件老化、环境湿度等原因可能存在微小电阻)，此时总正接触器两端的电压基本相等，可以确定总正接触器粘连。若第五电压与第六电压的差值大于预定的差值阈值，则可以认为第五电压与第六电压不相等，此时总正接触器两端的电压不相等，可以确定总正接触器未粘连。The fifth voltage is the voltage of the battery module, and the sixth voltage is the voltage between the negative electrode of the battery module and the rear end of the total positive contactor. In the case where there is voltage in the battery module circuit, when the fourth disconnection instruction for instructing the total positive contactor to disconnect is received, if the difference between the fifth voltage and the sixth voltage is less than the predetermined difference threshold, it can be considered that the fifth voltage is substantially equal to the sixth voltage (the total positive contactor itself may have a small resistance due to aging of components, environmental humidity, etc.), and at this time, the voltages at both ends of the total positive contactor are substantially equal, and it can be determined that the total positive contactor is adhered. If the difference between the fifth voltage and the sixth voltage is greater than the predetermined difference threshold, it can be considered that the fifth voltage is not equal to the sixth voltage, and at this time, the voltages at both ends of the total positive contactor are not equal, and it can be determined that the total positive contactor is not adhered.
在该实施例中，通过检测电池模组负极分别与总正接触器两端的电压的比较，能够可靠、精准地确定出总正接触器是否粘连。In this embodiment, by comparing the voltages at the negative electrode of the battery module with the voltages at both ends of the main positive contactor, it is possible to reliably and accurately determine whether the main positive contactor is stuck.
基于相同的发明构思，本公开还提供一种接触器状态的确定装置。图4是一示例性实施例提供的接触器状态的确定装置的框图。如图4所示，接触器状态的确定装置100包括检测电路2和控制器1。电池模组11的正极接总正接触器3，电池模组11的负极接总负接触器4，预充接触器5的一端与总负接触器4的前端连接，预充接触器5的另一端通过预充电阻6与总负接触器4的后端连接，总负接触器4的后端通过检测电路2连接至检测电源的正极，控制器1用于：Based on the same inventive concept, the present disclosure also provides a device for determining the state of a contactor. FIG4 is a block diagram of a device for determining the state of a contactor provided by an exemplary embodiment. As shown in FIG4 , the device 100 for determining the state of a contactor includes a detection circuit 2 and a controller 1. The positive pole of the battery module 11 is connected to the total positive contactor 3, the negative pole of the battery module 11 is connected to the total negative contactor 4, one end of the pre-charge contactor 5 is connected to the front end of the total negative contactor 4, and the other end of the pre-charge contactor 5 is connected to the rear end of the total negative contactor 4 through the pre-charge resistor 6. The rear end of the total negative contactor 4 is connected to the positive pole of the detection power supply through the detection circuit 2. The controller 1 is used to:
在接收到用于指示将电池模组11的负极侧接触器断开的第一断开指令的情况下，获取检测电路2中预定的第一节点的电压；When receiving a first disconnection instruction for instructing to disconnect the negative electrode side contactor of the battery module 11, obtaining a voltage of a predetermined first node in the detection circuit 2;
根据第一节点的电压确定总负接触器4和预充接触器5的状态。The states of the total negative contactor 4 and the pre-charging contactor 5 are determined according to the voltage of the first node.
在又一实施例中，上述控制器1还用于：In yet another embodiment, the controller 1 is further used for:
若第一节点的电压大于预定的第一电压阈值且小于预定的第二电压阈值，则确定总负接触器4粘连；If the voltage of the first node is greater than a predetermined first voltage threshold and less than a predetermined second voltage threshold, it is determined that the total negative contactor 4 is stuck;
若第一节点的电压大于或等于第二电压阈值，则确定预充接触器5粘连，总负接触器4未粘连。If the voltage of the first node is greater than or equal to the second voltage threshold, it is determined that the pre-charging contactor 5 is stuck and the total negative contactor 4 is not stuck.
在又一实施例中，检测电路2为分压电路，分压电路包括串联连接的第一电阻7和第二电阻8，第一节点为第一电阻7和第二电阻8之间的节点。In another embodiment, the detection circuit 2 is a voltage divider circuit, which includes a first resistor 7 and a second resistor 8 connected in series, and the first node is a node between the first resistor 7 and the second resistor 8 .
在又一实施例中，总正接触器3接快充正接触器的第一端9a，快充正接触器9的第二端9b接快充端口的正极，总负接触器4接快充负接触器10的第一端10a，快充负接触器10的第二端10b接快充端口的负极。上述控制器1还用于：In another embodiment, the total positive contactor 3 is connected to the first end 9a of the fast charging positive contactor, the second end 9b of the fast charging positive contactor 9 is connected to the positive pole of the fast charging port, the total negative contactor 4 is connected to the first end 10a of the fast charging negative contactor 10, and the second end 10b of the fast charging negative contactor 10 is connected to the negative pole of the fast charging port. The controller 1 is also used for:
在接收到用于指示将快充正接触器9断开的第二断开指令的情况下，获取第一电压和第二电压，第一电压为快充正接触器9的第一端9a和检测电路2中预定的第二节点之间的电压，第二电压为快充正接触器9的第二端9b和第二节点之间的电压；When receiving a second disconnection instruction for instructing to disconnect the fast-charging positive contactor 9, a first voltage and a second voltage are obtained, wherein the first voltage is a voltage between a first end 9a of the fast-charging positive contactor 9 and a predetermined second node in the detection circuit 2, and the second voltage is a voltage between a second end 9b of the fast-charging positive contactor 9 and the second node;
若第一电压与第二电压的差值小于预定的差值阈值，则确定快充正接触器9粘连。If the difference between the first voltage and the second voltage is less than a predetermined difference threshold, it is determined that the fast-charging positive contactor 9 is stuck.
在又一实施例中，上述控制器1还用于：In yet another embodiment, the controller 1 is further used for:
在接收到用于指示将快充负接触器10断开的第三断开指令的情况下，获取第三电压和第四电压，第三电压为快充负接触器10的第一端10a和检测电路2中预定的第三节点之间的电压，第四电压为快充负接触器10的第二端10b和第三节点之间的电压；When a third disconnection instruction for instructing to disconnect the fast-charge negative contactor 10 is received, a third voltage and a fourth voltage are obtained, wherein the third voltage is a voltage between the first end 10a of the fast-charge negative contactor 10 and a predetermined third node in the detection circuit 2, and the fourth voltage is a voltage between the second end 10b of the fast-charge negative contactor 10 and the third node;
若第三电压与第四电压的差值小于差值阈值，则确定快充负接触器10粘连。If the difference between the third voltage and the fourth voltage is less than the difference threshold, it is determined that the fast charging negative contactor 10 is stuck.
在又一实施例中，上述控制器1还用于：In yet another embodiment, the controller 1 is further used for:
在接收到用于指示将总正接触器3断开的第四断开指令的情况下，获取第五电压和第六电压，第五电压为电池模组11的正极和负极之间的电压，第六电压为电池模组11的负极与总正接触器3后端之间的电压；When a fourth disconnection instruction for instructing to disconnect the total positive contactor 3 is received, a fifth voltage and a sixth voltage are obtained, wherein the fifth voltage is the voltage between the positive electrode and the negative electrode of the battery module 11, and the sixth voltage is the voltage between the negative electrode of the battery module 11 and the rear end of the total positive contactor 3;
若第五电压与第六电压的差值小于预定的差值阈值，则确定总正接触器3粘连。If the difference between the fifth voltage and the sixth voltage is smaller than a predetermined difference threshold, it is determined that the main positive contactor 3 is stuck.
关于上述实施例中的装置，其中各个部分执行操作的具体方式已经在有关该方法的实施例中进行了详细描述，此处将不做详细阐述说明。Regarding the device in the above embodiment, the specific manner in which each part performs the operation has been described in detail in the embodiment of the method, and will not be elaborated here.
通过上述技术方案，预充接触器连接在总负接触器一端，在总负接触器的后端设置检测电路和检测电源，当接收到用于指示将总负接触器断开的第一断开指令时，在不依赖于总电压是否存在的情况下，能够根据检测电路中第一节点的电压可靠、精准地确定总负接触器和预充接触器的状态，从而区分总负接触器粘连故障和预充接触器粘连故障，提高了车辆的安全性能。Through the above technical solution, the pre-charge contactor is connected to one end of the main negative contactor, and a detection circuit and a detection power supply are arranged at the rear end of the main negative contactor. When a first disconnection instruction for instructing to disconnect the main negative contactor is received, the state of the main negative contactor and the pre-charge contactor can be reliably and accurately determined according to the voltage of the first node in the detection circuit without depending on whether the total voltage exists, thereby distinguishing between the adhesion fault of the main negative contactor and the adhesion fault of the pre-charge contactor, thereby improving the safety performance of the vehicle.
本方案还提供一种电池管理系统，包括上述的接触器状态的确定装置100。The present solution also provides a battery management system, including the above-mentioned contactor state determination device 100.
本方案还提供一种车辆，包括电池模组和上述的电池管理系统。The present solution also provides a vehicle, including a battery module and the above-mentioned battery management system.
以上结合附图详细描述了本公开的优选实施方式，但是，本公开并不限于上述实施方式中的具体细节，在本公开的技术构思范围内，可以对本公开的技术方案进行多种简单变型，这些简单变型均属于本公开的保护范围。The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings; however, the present disclosure is not limited to the specific details in the above embodiments. Within the technical concept of the present disclosure, a variety of simple modifications can be made to the technical solution of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.
另外需要说明的是，在上述具体实施方式中所描述的各个具体技术特征，在不矛盾的情况下，可以通过任何合适的方式进行组合。为了避免不必要的重复，本公开对各种可能的组合方式不再另行说明。It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.
此外，本公开的各种不同的实施方式之间也可以进行任意组合，只要其不违背本公开的思想，其同样应当视为本公开所公开的内容。In addition, various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.
| Application Number | Priority Date | Filing Date | Title |
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| CN202211000192.7ACN117630651B (en) | 2022-08-19 | 2022-08-19 | Contactor state determining method and device, battery management system and vehicle |
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| CN202211000192.7ACN117630651B (en) | 2022-08-19 | 2022-08-19 | Contactor state determining method and device, battery management system and vehicle |
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| CN117630651A CN117630651A (en) | 2024-03-01 |
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| CN202211000192.7AActiveCN117630651B (en) | 2022-08-19 | 2022-08-19 | Contactor state determining method and device, battery management system and vehicle |
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