技术领域technical field
本发明涉及一种蓄电池联络装置，特别是-48V直流单系统双电源蓄电池联络装置及其切换方法。The invention relates to a storage battery connection device, in particular to a -48V DC single-system double-power storage battery connection device and a switching method thereof.
背景技术Background technique
在传统的双电源系统用于给通信设备提供电力过程中，经常会出现两路电源的供电能力不一致，导致两路电源间存在较大的压差。从而使其中输出能力较高的那一路电源蓄电池出现放电。例如在交流电正常情况下，电源A或电源B的输出能力小于此路的负载，或者其中一路电源输入空开跳脱，此时该路电源蓄电池将会处于放电状态，造成两路电源蓄电池充放电不均衡现象；也可能是在交流电停电情况下，此时两路电源蓄电池都处于放电状态，由于两路电源的负载存在差异，负载大的一路电源蓄电池放电电流大，电池电压低。此外，即使两路电源的负载一致，但如果蓄电池的供电能力存在差异，也将导致供电能力不足的蓄电池电压比另一路蓄电池电压低的现象。以上现象不但为造成蓄电池的以及电源的持续时间降低，同时也会造成蓄电池的使用寿命下降。When a traditional dual power supply system is used to provide power to communication equipment, it often occurs that the power supply capabilities of the two power supplies are inconsistent, resulting in a large voltage difference between the two power supplies. Thus, the battery of the power supply with higher output capacity is discharged. For example, when the AC power is normal, the output capacity of power supply A or power supply B is smaller than the load of the power supply, or one of the power supply input circuit breakers trips, and the battery of the power supply of the power supply will be in a discharge state at this time, causing the batteries of the two power supplies to charge and discharge. Unbalanced phenomenon; it may also be that in the case of AC power failure, the batteries of the two power sources are in the discharge state at this time. Due to the difference in the load of the two power sources, the discharge current of the battery of the power source with a large load is large, and the battery voltage is low. In addition, even if the loads of the two power sources are the same, if the power supply capacity of the battery is different, the voltage of the battery with insufficient power supply capacity will be lower than the voltage of the other battery. The above phenomenon not only reduces the duration of the battery and the power supply, but also reduces the service life of the battery.
发明内容Contents of the invention
本发明的目的是为了解决上述技术的不足而提供一种蓄电池输出稳定，无安全隐患，可靠性高，控制方便的-48V直流单系统双电源蓄电池联络装置及其切换方法。The object of the present invention is to provide a -48V DC single system dual power supply battery contact device and its switching method with stable battery output, no potential safety hazard, high reliability and convenient control in order to solve the above-mentioned technical deficiencies.
为了达到上述目的，本发明所设计的-48V直流单系统双电源蓄电池联络装置，它包括蓄电池、两路电源和监控单元，所述的蓄电池分为第一蓄电池组和第二蓄电池组，所述的第一蓄电池组通过电池母联开关与第二蓄电池组连接，电池母联开关包括切换空开，在切换空开上设有电操，电操与监控单元连接。这种结构的特点在于利用监控单元监控得到的系统状态，实时自动的控制两组蓄电池组之间的关系，使得两组蓄电池组始终保持在最佳状态。In order to achieve the above-mentioned purpose, the -48V DC single-system double-power supply storage battery connection device designed by the present invention includes a storage battery, two-way power supplies and a monitoring unit, and the storage battery is divided into a first battery pack and a second battery pack. The first battery pack is connected to the second battery pack through a battery bus tie switch, the battery bus tie switch includes a switching circuit breaker, an electric operator is provided on the switching circuit breaker, and the electric operator is connected to the monitoring unit. The characteristic of this structure is to use the system state monitored by the monitoring unit to automatically control the relationship between the two battery packs in real time, so that the two battery packs are always in the best state.
本发明所设计的-48V直流单系统双电源蓄电池联络装置的切换方法是：当交流供电正常，第一蓄电池组或第二蓄电池组模块输出能力小于此路负载电流，此时，该路电源蓄电池处于放电状态，电源输出电压下降，当两个蓄电池组之间电压差大于0.7V时，监控单元控制电操使电池母联开关闭合，第一蓄电池组与第二蓄电池组输出端联络输出，输出电压较高的那路电源参与输出电压较低的另一路电源供载，实现蓄电池均衡放电；当交流停电时，第一蓄电池组与第二蓄电池组开始放电，此时如果两路电源所接的负载存在差异或两路电源蓄电池供电能力不一致，将导致两路电源输出电压下降幅度不同，如果两组电池组之间输出电压差大于0.7V时，监控单元控制电操使电池母联开关闭合，输出电压较高的电源参与输出电压较低的电源供载工作，使第一蓄电池组与第二蓄电池组的输出电压接近一致；当蓄电池联络装置处于闭合状态时，如果同时满足下列三个条件：1.第一蓄电池组与第二蓄电池组交流输入正常，2.电源模块带载能力足够，模块无限流告警，3.第一蓄电池组与第二蓄电池组都没有处在放电状态；监控单元发出蓄电池联络装置断开命令，第一蓄电池组与第二蓄电池组电池母联开关断开。这种控制方法，主要通过监控单元控制，根据不同的情况，控制两组蓄电池组之间的连接情况，使得两组蓄电池组始终保持在最佳状态。The switching method of the -48V DC single-system dual-power battery contact device designed in the present invention is: when the AC power supply is normal, the output capacity of the first battery pack or the second battery pack module is less than the load current of this road, at this time, the power supply battery of this road In the state of discharge, the output voltage of the power supply drops. When the voltage difference between the two battery packs is greater than 0.7V, the monitoring unit controls the electric operation to close the battery bus tie switch, and the output terminals of the first battery pack and the second battery pack are connected and output. The power supply with higher voltage participates in the other power supply with lower output voltage to realize the balanced discharge of batteries; when the AC power fails, the first battery pack and the second battery pack start to discharge. If the load is different or the battery power supply capacity of the two power sources is inconsistent, the output voltage of the two power sources will drop differently. If the output voltage difference between the two battery packs is greater than 0.7V, the monitoring unit will control the electric operation to close the battery bus tie switch. The power supply with higher output voltage participates in the load supply work of the power supply with lower output voltage, so that the output voltages of the first battery pack and the second battery pack are close to the same; when the battery contact device is in the closed state, if the following three conditions are met at the same time: 1. The AC input of the first battery pack and the second battery pack is normal; 2. The load capacity of the power module is sufficient; The disconnection command of the battery tie device, the battery tie switch of the first battery pack and the second battery pack is disconnected. This control method mainly uses the monitoring unit to control the connection between the two battery packs according to different situations, so that the two battery packs are always in the best state.
为了适应一些特殊的使用环境，所述的控单元中电池母联开关设置为手动状态，监控单元将不再自动对蓄电池联络装置的通断进行控制，而直接通过手动控制两组蓄电池组之间的连接关系。In order to adapt to some special use environments, the battery bus tie switch in the control unit is set to the manual state, and the monitoring unit will no longer automatically control the on-off of the battery contact device, but directly controls the connection between the two sets of battery packs manually. connection relationship.
本发明所得到的-48V直流单系统双电源蓄电池联络装置及其切换方法，在传统的双路电源输出系统中，很好地解决双路电源输出能力差异时，电源输出能力不足的那一路所接的负载工作异常。通过蓄电池联络装置的关联作用，输出能力充裕的电源参与输出能力不够的那一路电源给负载提供电力，从而很好地实现了双路电源之间输出能力的相互补偿，有效地确保了两路电源所接负载都能稳定工作，也解决了双路供电时，两路电源相互联络输出的问题。The -48V direct current single-system dual-power supply storage battery contact device and its switching method obtained in the present invention, in the traditional dual-way power supply output system, can well solve the difference in the output capability of the two-way power supply The connected load works abnormally. Through the associated function of the battery contact device, the power supply with sufficient output capacity participates in the power supply with insufficient output capacity to provide power to the load, thus well realizing the mutual compensation of the output capabilities between the two power supplies and effectively ensuring that the two power supplies All connected loads can work stably, and it also solves the problem of the two-way power supply communicating with each other and outputting when there is a dual-way power supply.
其次在单系统双电源中通过蓄电池联络装置对两路输出电源进行关联输出，如果一路电源的蓄电池开始放电，监控单元侦测到该路输出电压与另一路电源输出电压差超过0.7V时，监控单元控制联络装置接通，高电压的电路及时参与低电压的电路供载，使低电压的电路中蓄电池组停止或减小放电电流，有效地减小了两路电源的蓄电池之间放电的不平衡问题，同时有效地延长了蓄电池的使用寿命，具有较好的经济效益。Secondly, in the single-system dual-power supply system, the two output power supplies are connected through the battery contact device. If the battery of one power supply starts to discharge, when the monitoring unit detects that the output voltage difference between the output voltage of this line and the output voltage of the other power supply exceeds 0.7V, the monitoring The unit controls the contact device to be connected, and the high-voltage circuit participates in the low-voltage circuit to supply load in time, so that the battery pack in the low-voltage circuit stops or reduces the discharge current, effectively reducing the difference in discharge between the batteries of the two power sources. Balance problems, while effectively prolonging the service life of the battery, has better economic benefits.
附图说明Description of drawings
图1是本发明的结构示意图；Fig. 1 is a structural representation of the present invention;
图2是本发明的电池母联开关闭合时的第二路负载较大时电流走向图；Fig. 2 is the current trend diagram when the second road load is relatively large when the battery bus tie switch of the present invention is closed;
图3是本发明的电池母联开关闭合时的第一路负载较大时电流走向图；Fig. 3 is a current trend diagram when the first load of the battery bus tie switch of the present invention is relatively large;
图4是本发明电池母联开关断开时电流走向示意图；Fig. 4 is a schematic diagram of the current trend when the battery bus tie switch of the present invention is disconnected;
具体实施方式Detailed ways
下面通过实施例结合附图对本发明作进一步的描述。The present invention will be further described below with reference to the accompanying drawings.
实施例1：Example 1:
如图1所示，本实施例描述的-48V直流单系统双电源蓄电池联络装置，它包括蓄电池1、两路电源和监控单元2，所述的蓄电池1分为第一蓄电池组1A和第二蓄电池组1B，所述的第一蓄电池组1A通过电池母联开关4与第二蓄电池组1B连接，电池母联开关4包括切换空开3，在切换空开3上设有电操5，电操5与监控单元2连接。As shown in Figure 1, the -48V DC single-system dual-power supply storage battery connection device described in this embodiment includes a storage battery 1, two power supplies and a monitoring unit 2. The storage battery 1 is divided into a first battery pack 1A and a second battery pack 1A. The battery pack 1B, the first battery pack 1A is connected to the second battery pack 1B through the battery bus tie switch 4, the battery bus tie switch 4 includes a switching circuit breaker 3, and an electric operator 5 is arranged on the switching circuit breaker 3. Operation 5 is connected with monitoring unit 2.
本实施例描述的-1B8V直流单系统双电源蓄电池1联络装置的切换方法是：如图2、图3所示，当交流电A、B供电正常，第一蓄电池组1A或第二蓄电池组1B模块输出能力小于此路负载电流，此时，该路电源蓄电池1处于放电状态，电源输出电压下降，当两个蓄电池组之间电压差大于0.7V时，监控单元2控制电操5使电池母联开关4闭合，第一蓄电池组1A与第二蓄电池组1B输出端联络输出，输出电压较高的那路电源参与输出电压较低的另一路电源供载，实现蓄电池1均衡放电；当交流停电时，第一蓄电池组1A与第二蓄电池组1B开始放电，此时如果两路电源所接的负载存在差异或两路电源蓄电池1供电能力不一致，将导致两路电源输出电压下降幅度不同，如果两组电池组之间输出电压差大于0.7V时，监控单元2控制电操5使电池母联开关4闭合，输出电压较高的电源参与输出电压较低的电源供载工作，使第一蓄电池组1A与第二蓄电池组1B的输出电压接近一致；当蓄电池1联络装置处于闭合状态时，如果同时满足下列三个条件：1.第一蓄电池组1A与第二蓄电池组1B交流输入正常，2.电源模块带载能力足够，模块无限流告警，1A.第一蓄电池组1A与第二蓄电池组1B都没有处在放电状态；监控单元2发出蓄电池1联络装置断开命令，第一蓄电池组1A与第二蓄电池组1B电池母联开关4断开，如图3所示。这种控制方法，主要通过监控单元2控制，根据不同的情况，控制两组蓄电池组之间的连接情况，使得两组蓄电池组始终保持在最佳状态。The switching method of the -1B8V DC single-system dual-power battery 1 communication device described in this embodiment is: as shown in Figure 2 and Figure 3, when the AC power supply A and B are normal, the first battery pack 1A or the second battery pack 1B module The output capacity is less than the load current of this road. At this time, the battery 1 of the power supply of this road is in the state of discharge, and the output voltage of the power supply drops. When the voltage difference between the two battery packs is greater than 0.7V, the monitoring unit 2 controls the electric operation 5 to make the battery bus The switch 4 is closed, the first storage battery pack 1A and the second storage battery pack 1B are connected and output, and the power supply with higher output voltage participates in the other power supply with lower output voltage to realize the balanced discharge of storage battery 1; when the AC power failure occurs , the first storage battery pack 1A and the second storage battery pack 1B start to discharge. At this time, if the loads connected to the two power sources are different or the power supply capacity of the battery 1 of the two power sources is inconsistent, the output voltages of the two power sources will drop in different ranges. If the two power sources When the output voltage difference between the battery packs is greater than 0.7V, the monitoring unit 2 controls the electric operator 5 to close the battery bus tie switch 4, and the power supply with a higher output voltage participates in the load supply work of the power supply with a lower output voltage, so that the first battery pack The output voltages of 1A and the second battery pack 1B are close to the same; when the contact device of battery 1 is in the closed state, if the following three conditions are met at the same time: 1. The AC input of the first battery pack 1A and the second battery pack 1B is normal, 2. The load capacity of the power module is sufficient, and the module has an infinite current alarm. 1A. Neither the first battery pack 1A nor the second battery pack 1B is in a discharge state; The battery tie switch 4 of the second battery pack 1B is disconnected, as shown in FIG. 3 . This control method is mainly controlled by the monitoring unit 2, and according to different situations, the connection between the two sets of storage batteries is controlled, so that the two sets of storage batteries are always kept in the best state.
同时所述的控单元中电池母联开关4设置为手动状态，监控单元2将不再自动对蓄电池1联络装置的通断进行控制，而直接通过手动控制两组蓄电池组之间的连接关系。At the same time, the battery tie switch 4 in the control unit is set to a manual state, and the monitoring unit 2 will no longer automatically control the connection of the battery 1 contact device, but directly manually control the connection relationship between the two groups of battery packs.
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310114511.1ACN103199586B (en) | 2013-04-03 | 2013-04-03 | -48V direct current single system double-power-source storage battery contact device and switching method thereof |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310114511.1ACN103199586B (en) | 2013-04-03 | 2013-04-03 | -48V direct current single system double-power-source storage battery contact device and switching method thereof |
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| CN103199586A CN103199586A (en) | 2013-07-10 |
| CN103199586Btrue CN103199586B (en) | 2015-04-15 |
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|---|---|---|---|
| CN201310114511.1AExpired - Fee RelatedCN103199586B (en) | 2013-04-03 | 2013-04-03 | -48V direct current single system double-power-source storage battery contact device and switching method thereof |
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| EP3576273B1 (en)* | 2018-05-31 | 2024-06-05 | Yazaki Corporation | Dc/dc conversion unit |
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