Invention content
The object of the present invention is to provide a kind of power battery method for heating and controlling and systems, to be put to vehicle in battery packBefore electricity, low temperature battery packet is heated.
The technical solution adopted by the present invention is as follows：
A kind of power battery method for heating and controlling, including：
Receive the heating instructions that user sends；
Forbidden energy power battery discharges to vehicle；
Detect the Current Temperatures of battery cell；
Obtain the lowest temperature angle value of battery cell；
Compare whether lowest temperature angle value is more than or equal to preset first temperature threshold；
If so, exiting computer heating control；It is heated for power battery if it is not, then starting battery heating device, and controls powerBattery is powered for battery heating device total power.
Optionally, the method further includes：
In power battery heating process, the variation of lowest temperature angle value is monitored in real time；
Judge whether lowest temperature angle value reaches preset second temperature threshold value；Wherein, second temperature threshold value is higher than the first temperatureSpend threshold value；
If it is not, then continuing to heat and monitor；If so, closing battery heating device, and exit computer heating control.
Optionally, the method further includes：
In power battery heating process, the stopping heating instructions for receiving user's transmission are monitored whether in real time；
If it is not, then continuing to heat and monitor；If so, closing battery heating device, and exit computer heating control.
Optionally, the method further includes：
Before the Current Temperatures of detection battery cell, functional diagnosis is carried out to power battery state and temperature testing equipment.
Optionally, the computer heating control that exits includes：
Restore power battery to discharge to vehicle, and stops reception heating instructions in discharge process.
Optionally, the heating instructions for receiving user's transmission include：The heating that user sends in a wireless form is received to refer toIt enables.
A kind of power battery heating control system, including：
Control unit, power battery, battery temperature detection device and battery heating device；
Described control unit is used for after receiving the heating instructions that user sends, and power battery described in forbidden energy puts vehicleElectricity；And the Current Temperatures of battery cell are detected to obtain the minimum temperature of battery cell by the battery temperature detection deviceValue；And according to the relationship of lowest temperature angle value and preset temperature threshold, computer heating control is exited in execution, or starts the battery and addHot charging is set to power battery and heats and control the power battery as battery heating device total power power supply.
Optionally, the battery temperature detection device includes：
Battery management unit and the temperature sensor being installed on the power battery；
The battery management unit is for receiving the battery cell temperature that the temperature sensor detects, and by the electricityPond monomer temperature is sent to described control unit.
Optionally, the system also includes：Wireless communication module；
Described control unit is additionally operable to refer to by the heating that wireless communication module reception user sends in a wireless formIt enables.
Optionally, the battery heating device includes water pump and the battery pack water jacket equipped with heater；
Described control unit is electrically connected with the water pump and the heater respectively.
The present invention temporarily forbids power battery to discharge vehicle, and by right by the heating instructions of reception userWhether minimum monomer temperature is detected and compares processing, heated with decision；Furthermore present invention proposition makes when heatedPower battery total power provides electric energy for heating, it is thus possible to effectively promote the battery efficiency of heating surface, shorten heating time；Accordingly, originallyInvention can be realized before power battery discharges to vehicle, rapidly heated to low temperature battery, power battery is promoted with thisDischarging efficiency and discharge capability, and then ensure power battery security performance and service life under the premise of, also to vehicleDrive speed provide safeguard with accelerating ability.
Specific implementation mode
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to endSame or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attachedThe embodiment of figure description is exemplary, and is only used for explaining the present invention, and is not construed as limiting the claims.
The present invention provides a kind of embodiment of power battery method for heating and controlling, as shown in Figure 1, the control method can be withInclude the following steps：
Step S1, the heating instructions that user sends are received；
Step S2, forbidden energy power battery discharges to vehicle；
Step S3, the Current Temperatures of battery cell are detected；
Step S4, the lowest temperature angle value of battery cell is obtained；
Step S5, compare whether lowest temperature angle value is more than or equal to preset first temperature threshold；
If so, thening follow the steps S10, exiting computer heating control；If it is not, thening follow the steps S6, startup battery heating device isPower battery heats, and controls power battery and power for battery heating device total power.
The present invention is controlled in view of the hommization of heating function, proposes the heating instructions sent by user as heating functionTriggering command, that is to say and show the user by vehicle according to practical weather, vehicle parks time and vehicle is madeWith demand, whether subjective decision, which needs, is heated power battery.The form for sending heating instructions can be various, such asIt triggers manual key action, remote control or is sent by smart machine and instructed, heating instructions can also be assigned via reservation formDeng.
When the heating instructions for receiving user's transmission, then it is assumed that user it is expected to heat power battery, at this time can be withForbidden energy power battery discharges to vehicle, and in other words, after obtaining the heating instructions that user sends, power battery can not be vehicle rowOffer electric energy is provided, temporarily heating function need to be waited for run.
Specifically, the Current Temperatures of the battery cell of composition battery pack can comprehensively be detected first, to ensure to beSubsequent operation provides accurate data and supports, the lowest temperature angle value of battery cell is got from all monomer temperatures detected,The lowest temperature angle value of the battery cell can characterize the actual temperature state of battery pack；Then, by the lowest temperature angle value and in advanceIf the first temperature threshold be compared, wherein the first temperature threshold can be used to refer to the battery disclosure satisfy that vehicle powerMinimum safe temperature value, concrete numerical value can be set previously according to the material, power or even vehicle etc. of battery pack.It needsIllustrate, the purpose for designing above-mentioned steps be because the aforementioned heating instructions referred to be by user's subjective decision, thus in order toIt avoids generating erroneous judgement, i.e., the heating instructions of user may be mismatched with the practical demand for heat of power battery, and the present embodiment proposesPass through the alignments of minimum monomer temperature and predetermined threshold value, it is determined whether need to heat.
It connects above, if comparing out lowest temperature angle value is more than or equal to preset first temperature threshold, it may be considered that objectiveIt is upper current without heat the normal work that it also can be safe and stable to power battery, or itself generated by after electric dischargeHeat can quickly reach the temperature range under nominal situation, therefore the computer heating control triggered by user can be exited, certainly,Prompt message can also be issued the user under this operating mode in certain embodiments, inform user's current battery temperature without carrying outHeating；
If comparing out lowest temperature angle value is less than preset first temperature threshold, it can determine that battery pack is heatedIt can just ensure its safe and stable working condition, then with this condition, the present embodiment proposes to start battery heating deviceIt is heated for power battery, and controls power battery and power for battery heating device total power.What needs to be explained here is that many institute's weeksKnow, by the new-energy automobile of electrical energy drive, its whole vehicle functions source is all battery pack completely, and therefore, aforementioned battery heating device is sameSample need power battery provide electric energy, and in order to make the efficiency of heating surface get a promotion, heating process it is more rapid, power can be madeBattery full power is exported to battery heating device, carries out Non-intermittent without idly full effect heating；It can to this those skilled in the artWith understanding, one, herein signified total power power supply, are not that battery whole electric energy is only supplied battery heating device, vehicleInterior necessary control module, parking unit or even the aforementioned detection of realization the present embodiment all need battery pack to supply than reciprocity functionElectricity；Signified total power power supply herein refers to the full power output that 100% is carried out to battery heating device.Even if secondly, full powerHeating, required electric energy also has significant difference when actually required electric energy is with vehicle traveling, acceleration, thus power battery adds for batteryThe power supply of thermal total power is not equal to the power battery being mentioned above and discharges vehicle.Even if thirdly, power battery be batteryHeating device total power is powered, but since the heating process used time is of short duration and the systems such as heating device energy consumption and vehicle driving consumeAccounting very little can be compared, so what is referred in its influence and background to battery pack generation heats to battery pack not in electric dischargeGood influence is compared, very little.
Based on above-described embodiment, present invention further proposes a preferred embodiments, as shown in Fig. 2, adding in power batteryIn thermal process (i.e. after connecting abovementioned steps S6), the variation for executing step S7, monitoring lowest temperature angle value in real time；And
Step S8, judge whether lowest temperature angle value reaches preset second temperature threshold value；Wherein, second temperature threshold value can be withThe temperature for being used to indicate the battery pack is in safe work state, can also be for the heating set by the protection to battery packUpper limit value, therefore second temperature threshold value is necessarily higher than aforementioned first temperature threshold.
If not up to giving second temperature threshold value, continues to heat and monitor；If reaching the second temperature threshold value, step is executedRapid S9, battery heating device is closed, and exits computer heating control.What needs to be explained here is that in order to promote the efficiency of heating surface, Ke YikaoIt is the temperature value close to normal battery operating mode by second temperature threshold calibration to consider in advance, and then can rely on the remaining of heating deviceHeat and follow-up vehicle start traveling etc., and battery temperature is made to rise to normal interval；Furthermore as previously mentioned, executing stepPrompt message can also be exported to user when S9, clearly to inform that battery heating is completed.
It is controlled for hommization and the reliability for heating hardware is considered, the present invention combination previous embodiment and preferredScheme, routine can be carried out by wireless transmission heating instructions and before heating function executes to heating facility by additionally providing one kindProperty inspection and by user's decision stop heating control method, with reference to general flowchart shown in Fig. 3, the control method packetIt includes：
Step S101, the heating instructions that user sends in a wireless form are received；
Step S102, forbidden energy power battery discharges to vehicle；
Step S103, functional diagnosis is carried out to power battery state and temperature testing equipment；
Step S104, the Current Temperatures of battery cell are detected；
Step S105, the lowest temperature angle value of battery cell is obtained；
Step S106, compare whether lowest temperature angle value is more than or equal to preset first temperature threshold；
If so, thening follow the steps S10, exiting computer heating control；If it is not, thening follow the steps S107, starting battery heating deviceIt is heated for power battery, and controls power battery and power for battery heating device total power；
Step S108, it monitors whether to receive the stopping heating instructions that user sends in real time；
If not receiving, continues to heat and monitor；If receiving, thens follow the steps S109, closes battery heating device,And exit computer heating control.
In this embodiment, wireless can refer to that user is remotely sent out by the bluetooth or communication network of mobile terminalHeating instructions are sent, the heating instructions that user assigns speech form by interactive voice equipment are can also refer to；This two ways is eachAdvantageous, long-range transmission instruction may be implemented to heat in advance, more save period of reservation of number.And voice control can then liberateUser's both hands carry out other operations convenient for user.
It is furthermore described that functional diagnosis is carried out to power battery state and temperature testing equipment, it can be understood as generally to power onConventional detection is carried out to the certain necessary functions of vehicle and equipment afterwards, is to carry out function for battery pack and heating associated components hereDiagnosis, ensures that the functions such as subsequent detection temperature and heating can be executed reliably with this.
In addition, about the stopping heating instructions for monitoring user's transmission in heating process, allows for and be possible to user to vehicleUse demand change, such as need to start vehicle immediately and sail out of, and heating time can not be waited for terminate.Therefore it usesFamily can be operated with manual switches, smart machine button or aforementioned wireless assign stopping heating instructions.Similarly, electricity is being closedPond heating device, and after exiting computer heating control, instruction can be sent to user to inform that its heating is interrupted.
And in practical operation, it may be considered that be combined embodiment illustrated in fig. 3 with embodiment illustrated in fig. 2, both monitoredHeating temperature variation monitors halt instruction again, arbitrary in both satisfactions to add first, being performed both by close battery heating device and exitThe operation of thermal control.
Finally, for each embodiment of above-mentioned control method you need to add is that, the aforementioned computer heating control that exits can be specificRefer to the function of restoring power battery and discharge vehicle, and stops reception heating instructions in discharge process.Release above-mentioned faceThe forbidden energy of when property operates, and allows user to start and drive vehicle, and in battery pack in vehicle discharge process, no longer receiving and addingHeat instruction, causing to assign heating instructions in electric discharge to avoid user misoperation makes full-vehicle control or battery management that confusion etc. occurHarmful effect.
Based on aforementioned control method, the present invention also provides a kind of corresponding power battery heating control system, the systemsIncluding：Control unit, power battery, battery temperature detection device and heating device；
In conjunction with control method described previously, the operation principle of this system embodiment is：Described control unit is receiving userAfter the heating instructions of transmission, power battery described in forbidden energy discharges to vehicle；And electricity is detected by the battery temperature detection deviceThe Current Temperatures of pond monomer are to obtain the lowest temperature angle value of battery cell；Then, according to lowest temperature angle value and preset temperature thresholdComputer heating control is exited in the relationship of value, execution, or it is that power battery heats and controls the power electric to start the heating devicePond powers for the battery heating device total power.
In a preferred embodiment, aforementioned battery temperature detection device includes：It battery management unit and is installed on describedTemperature sensor on power battery；Aforementioned battery management unit is for receiving the battery cell that the temperature sensor detectsTemperature, and the battery cell temperature is sent to described control unit.
Certainly, in certain embodiments, control unit can be entire car controller (VCU) or car running computer (ECU).ElectricityPond administrative unit can be battery controller (LBC) or battery management system (BMS).And battery heating device may include thenThe liquid cooling apparatus being mainly made of water pump and the battery pack water jacket equipped with heater, aforementioned control unit respectively with the water pumpAnd the heater electrical connection, wherein liquid cooling apparatus is commonly used to carry out liquid thermal conductivity cooling to high-temperature battery packet, in realityThe existing resource is made full use of in operation, can save cost and the space of additional structure battery heating device；
On the basis of above system embodiment, it is also contemplated that control unit executes computer heating control indirectly, for example, vehicleController can pass through battery controller on/off water pump and heater.
Finally, may be used also in another preferred embodiment of this system in conjunction with the wireless transmission instruction mode being mentioned aboveTo include wireless communication module；Described control unit then can receive user by the wireless communication module and send out in a wireless formThe heating instructions (and stopping heating instructions) sent.The wireless communication module prior art provides multiple choices, such as can beGPRS module, voice interaction module, bluetooth module or remote control reception module etc..
Be described in detail based on the embodiments shown in the drawings the present invention structure, feature and effect, but more thanDescribed is only presently preferred embodiments of the present invention, needs to explain, and the technology involved by above-described embodiment and its preferred embodiment is specialSign, those skilled in the art can be under the premise of not departing from, not changing the mentality of designing and technique effect of the present invention, rationallyGround combination collocation is at a variety of equivalent schemes；Therefore, the present invention is every according to the present invention's not to limit practical range shown in drawingChange made by conception, or be revised as the equivalent embodiment of equivalent variations, does not go beyond the spirit of the description and the drawingsWhen, it should all be within the scope of the present invention.