CN114142128A - Battery module for power device, temperature control strategy and power device - Google Patents
Battery module for power device, temperature control strategy and power device Download PDFInfo
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- CN114142128A CN114142128A CN202111441449.8A CN202111441449A CN114142128A CN 114142128 A CN114142128 A CN 114142128A CN 202111441449 A CN202111441449 A CN 202111441449A CN 114142128 A CN114142128 A CN 114142128A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
- H01M10/615—Heating or keeping warm
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
- H01M10/486—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for measuring temperature
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
- H01M10/617—Types of temperature control for achieving uniformity or desired distribution of temperature
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
- H01M10/625—Vehicles
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/63—Control systems
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/63—Control systems
- H01M10/637—Control systems characterised by the use of reversible temperature-sensitive devices, e.g. NTC, PTC or bimetal devices; characterised by control of the internal current flowing through the cells, e.g. by switching
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/655—Solid structures for heat exchange or heat conduction
- H01M10/6554—Rods or plates
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/657—Means for temperature control structurally associated with the cells by electric or electromagnetic means
- H01M10/6571—Resistive heaters
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/244—Secondary casings; Racks; Suspension devices; Carrying devices; Holders characterised by their mounting method
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/249—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders specially adapted for aircraft or vehicles, e.g. cars or trains
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/258—Modular batteries; Casings provided with means for assembling
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Automation & Control Theory (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Aviation & Aerospace Engineering (AREA)
- Secondary Cells (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
The application relates to a battery module, temperature control strategy and power device for power device, the battery module includes: cell group, end plate and heating member, the cell group includes: a plurality of electric cores and a plurality of electric core superpose in proper order, and the end plate setting is at the tip of electric core group in the superpose orientation, adds between the electric core of heat-insulating material setting at end plate and neighbouring end plate, and when the less value in the temperature of the electric core of the highest electric core of temperature and the temperature of the electric core of neighbouring end plate is less than first threshold value, adds the work of heat-insulating material and heats the electric core of neighbouring end plate. Through setting up the heating member in end plate department to through the temperature of the highest electric core of temperature in survey battery module and the temperature of the electric core of neighbouring end plate, when less value among them is less than the first threshold value of settlement, the mode of heating the electric core of neighbouring end plate of heating member, can in time heat the battery module, promote the precision of the temperature of control battery module, the temperature of each electric core in making the battery module is even, increases the discharge capacity of battery module, promotes the life of battery module.
Description
Technical Field
The application relates to the field of new energy automobiles, in particular to a battery module, a temperature control strategy and a power device for the power device.
Background
Because the CTP battery pack has great advantages on the energy density and voltage platform of the battery pack, the CTP battery pack is widely applied to the new energy market. But because the CTP battery bordures the roof beam more, the difficult distribution of longer and the flow of runner in the cold drawing, the CTP battery wraps the electric core of module border position department because the boundary beam heat dissipation is very fast, leads to the intermediate position of electric core module and the electric core difference in temperature of module border position department great, influences the discharge capacity and the life of battery package.
Content of application
The present application is directed to solving at least one of the problems in the prior art. For this reason, an aim at of this application provides a battery module for power device, and this battery module's electric core difference in temperature is less, and battery module's discharge capacity is good, long service life.
Another object of the present application is to provide a temperature control strategy for a battery module.
It is a further object of the present application to provide a power plant.
According to this application battery module for power device of embodiment includes: the electric core group, the electric core group includes: the battery comprises a plurality of battery cells which are sequentially superposed; end plates disposed at ends of the electric core groups in a stacking direction; heating member, it is in to add the heat-insulating material setting end plate and neighbouring the end plate between the electric core the temperature is the highest the temperature of electric core and neighbouring the end plate less than first threshold value in the temperature of electric core, it is right to add heat-insulating material work neighbouring the end plate electric core heating.
According to a battery module for power device of this application embodiment, through set up heating member in end plate department, the electric core heating of neighbouring end plate, the temperature of each electric core in making the battery module is even, increase the discharge capacity of battery module, promote the life of battery module, and through the temperature of the highest electric core of temperature in survey battery module and the temperature of the electric core of neighbouring end plate, when less value among them is less than the first threshold value of settlement, the mode of heating member to the electric core heating of neighbouring end plate, can in time heat the battery module, promote the precision of the temperature of control battery module, the capacity decay of battery module has further been reduced, the life of battery module has been prolonged.
In some embodiments, the end plate comprises: first end plate and second end plate, first end plate with the second end plate sets up the both ends of electric core group in the direction of superpose, the heating member includes: first heating member and second heating member, first heating member sets up first end plate and neighbouring first end plate between the electric core, second heating member sets up second end plate and neighbouring second end plate between the electric core, first heating member structure is in first end plate and temperature are the highest heat when the difference in temperature of electric core is greater than the setting value, second heating member structure is in second end plate and temperature are the highest heat when the difference in temperature of electric core is greater than the setting value.
In some embodiments, the battery module for a power plant further includes: the battery comprises a first temperature sensor, a second temperature sensor and a third temperature sensor, wherein the first temperature sensor is arranged on the battery core adjacent to the first end plate, the second temperature sensor is arranged on the battery core adjacent to the second end plate, and the third temperature sensor is arranged on the battery core with the highest temperature.
Specifically, the cells with the highest temperature are located in the middle area of the cell core group in the stacking direction.
Alternatively, the first heating member and the second heating member are heating films or PTC heaters.
In some embodiments, the first heating member is configured as a first heating film including: the first heating film body is opposite to the first end plate, and first flanges are positioned at two ends of the first heating film body and extend towards the second end plate; the second heating member is configured as a second heating film including: the second heating film body is opposite to the second end plate, and second flanges which are located at two ends of the second heating film body and extend towards the first end plate.
In some embodiments, the battery module for a power plant further includes: the cold plate is arranged at the bottom side of the electric core group and is attached to the bottom end of the electric core group.
The temperature control strategy for the battery module according to the embodiment of the application at least comprises the following steps: detecting the temperature T1 of the cell adjacent to the end plate and the temperature T2 of the highest-temperature cell; comparing the temperature T1 with the temperature T2 and obtaining the minimum value T of the twominAnd determining TminWhether it is less than a first threshold T0; if yes, heating the cold plate, and enabling the heating element to work; otherwise, the cold plate stops heating and selectively controls the heating element to work according to the temperature difference delta T of T1 and T2.
According to the temperature control strategy for battery module of this application embodiment, through the temperature of using temperature control strategy control battery module, the charge and discharge performance of battery module is good to the inside temperature of battery module is even, and the difference in temperature is less, can increase the discharge capacity of battery module, promotes battery module's life.
Further, after the cold plate is heated, T is judgedminIs greater than a second threshold and is at TminAnd controlling the cold plate to stop heating after the temperature is greater than the second threshold value.
A power plant according to an embodiment of the present application includes a temperature control strategy as described in any of the above.
According to the power device of this application embodiment, through setting up above-mentioned temperature control strategy, the charge-discharge performance of battery module is good to the inside temperature of battery module is even, and the difference in temperature is less, and the discharge capacity of multiplicable battery module promotes the life of battery module, and power device's performance is better.
Additional aspects and advantages of the present application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the present application.
Drawings
The above and/or additional aspects and advantages of the present application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic structural view of a battery module according to an embodiment of the present application;
fig. 2 is a perspective external view of a first heating member of a battery module according to an embodiment of the present application;
FIG. 3 is a schematic flow chart of a temperature control strategy according to an embodiment of the present application.
Reference numerals:
a battery pack 1000,
A battery module 100,
A battery core group 1, a battery core 10,
End plate 2, first end plate 21, second end plate 22,
The heating member 3, the first heating member 31, the first heating film 310, the first heating film body 311, the first flange 312, the second heating member 32, the first heating member,
A cold plate 4,
A module binding band 5,
Detailed Description
Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present application and are not to be construed as limiting the present application.
In the description of the present application, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," "axial," "radial," "circumferential," and the like are used in the indicated orientations and positional relationships based on the drawings for ease of description and simplicity of description, but do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting. In the description of the present application, "the first feature" and "the second feature" may include one or more of the features. In the description of the present application, "a plurality" means two or more.
A battery module 100 for a power plant according to an embodiment of the present application is described below with reference to fig. 1 to 2.
The battery module 100 for a power device according to an embodiment of the present application includes: electric core group 1, end plate 2 and heating member 3, electric core group 1 includes: a plurality of electric cores 10 and a plurality of electric cores 10 superpose in proper order, and end plate 2 sets up at the tip of electric core group 1 in the direction of the superpose, adds heat-insulating material 3 and sets up between end plate 2 and the electric core 10 of neighbouring end plate 2, and when the less value in the temperature of the electric core 10 of the highest temperature and the temperature of the electric core 10 of neighbouring end plate 2 is less than first threshold value, adds heat-insulating material 3 work and heats electric core 10 of neighbouring end plate 2.
As shown in fig. 1, the battery module 100 is formed by stacking a plurality of electric core groups 1, and the electric core group 1 is formed by stacking a plurality of electric cores 10 in sequence, wherein the electric cores 10 are stacked in the left-right direction to form the electric core group 1, and the electric core groups 1 are stacked in the front-back direction to form the battery module 100, it is worth mentioning that the left-right direction and the front-back direction are based on the orientation shown in the drawings, and it is only for convenience of describing the present application and simplifying the description, but not for indicating or suggesting that the electric core group 1 or the electric core group 10 in question is configured in a specific orientation.
The end plate 2 is arranged at the end of the stacking direction of the cell group 1, that is, the end plate 2 is arranged at the two ends of the cell group 1 in the front-back direction, the heating element 3 is arranged between the end plate 2 and the cell 10 adjacent to the end plate 2, which is in contact with the heating plate, can be heated. Heating member 3 is located end plate 2 towards the inboard of electric core 10, and end plate 2 plays the guard action to heating member 3, makes battery module 100's compact structure simultaneously, and stability is higher.
It can be understood that, the heat dissipation of the battery core 10 of the adjacent end portion in the battery module 100 is fast, and the heating plate of the embodiment of the present application can heat the battery core 10 of the adjacent end plate 2, so that the temperature difference of each battery core 10 in the battery module 100 is small, the discharge capacity of the battery module 100 is increased, and the service life of the battery module 100 is prolonged.
In the embodiment of the present application, the battery cell 10 with the highest temperature in the battery module 100 may be determined through multiple experiments, for example: the battery module 100 can be heated integrally, and the battery cell 10 with the slowest heat dissipation speed is obtained through testing, namely the battery cell 10 with the highest temperature in the battery module 100; or when the battery module 100 normally works, the battery cell 10 with the highest temperature when the battery module 100 works is obtained through testing, that is, the battery cell 10 with the highest temperature in the battery module 100.
And generally, the cells 10 with the highest temperature are located in the middle area of the cell group 1 in the stacking direction.
Obtain the temperature of the highest electric core 10 of temperature in battery module 100 and the temperature of the electric core 10 of neighbouring end plate 2, compare their temperature, obtain the smaller value of both, when the smaller value is less than the first threshold value of settlement, add heat-insulating member 3 and heat neighbouring end plate 2's electric core 10 promptly.
It should be noted that the battery module 100 has a heat exchanger for exchanging heat with the whole battery module 100, when the temperature of the battery cell 10 is lower than the first temperature threshold, the charging and discharging performance of the battery cell 10 will be affected, and the performance of the battery module 100 will be reduced, so that the BMS (power battery management system) will control the heat exchanger to maintain the temperature of the battery module 100 above the first temperature threshold, so as to improve the working performance of the battery module 100.
The first temperature threshold is determined according to the charge and discharge performance of the battery module 100, and the first temperature thresholds of different battery modules 100 are different and flexibly set according to the battery modules 100.
The heat dissipation of the electricity core 10 of adjacent end portion is very fast in battery module 100, under the general condition, the temperature of the electricity core 10 of adjacent end plate 2 is the smaller value, when the electricity core 10 temperature of adjacent end plate 2 is less than the first threshold value of settlement promptly, the hot plate heats the electricity core 10 of adjacent end plate 2 promptly, the hot plate can heat easy radiating end plate 2 department electricity core 10 specially, promote the temperature of end plate 2 department fast, thereby make the temperature of each electricity core 10 even in battery module 100, promote battery module 100's performance, the central point who avoids appearing the electricity core 10 module puts the electricity core 10 temperature and is higher than first threshold value, and the temperature of end department electricity core 10 has been less than first threshold value, cause the condition of the charge-discharge performance decline of battery module 100 to appear.
And under other special circumstances, for example the operation of heat exchanger breaks down, when the temperature that leads to the highest electric core 10 of temperature is the smaller value, promptly when the temperature of the highest electric core 10 of temperature is less than the first threshold value of settlement, the hot plate heats promptly, can promote battery module 100's problem, promotes battery module 100's work efficiency.
According to battery module 100 for power device of the embodiment of this application, through set up heating member 3 in end plate 2 department, electricity core 10 to neighbouring end plate 2 heats, the temperature of each electricity core 10 in messenger's battery module 100 is even, increase battery module 100's discharge capacity, promote battery module 100's life, and through the temperature of the highest electricity core 10 of temperature in survey battery module 100 and the temperature of neighbouring end plate 2's electricity core 10, when less value among them is less than the first threshold value of settlement, heating member 3 is to the mode of neighbouring end plate 2's electricity core 10 heating, can in time heat battery module 100, promote the precision of control battery module 100's temperature, further reduced battery module 100's capacity attenuation, battery module 100's life has been prolonged.
In some embodiments of the present application, as shown in fig. 1, the end plate 2 includes: first and second end plates 21 and 22, the first and second end plates 21 and 22 being provided at both ends of the electric core pack 1 in the stacking direction, the heating member 3 includes: a first heating member 31 and a second heating member 32, the first heating member 31 being disposed between the first end plate 21 and the cells 10 adjacent to the first end plate 21, the second heating member 32 being disposed between the second end plate 22 and the cells 10 adjacent to the second end plate 22.
The battery module 100 is formed by stacking the electric core group 1 along the front-back direction, the two ends of the stacking direction of the electric core group 1 are respectively provided with a first end plate 21 and a second end plate 22, the temperature of the electric core 10 adjacent to the end plate 2 is, the temperature of the electric core 10 adjacent to the first end plate 21 and the temperature of the electric core 10 adjacent to the second end plate 22 are, when the temperature of the electric core 10 with the highest temperature is compared with the temperature of the electric core 10 adjacent to the end plate 2, the temperature of the electric core 10 with the highest temperature needs to be compared, the temperature of the electric core 10 adjacent to the first end plate 21 and the temperature of the electric core 10 adjacent to the second end plate 22 are compared together, and when the smaller value is smaller than a first temperature threshold value, the heating member 3 works.
The heating member 3 includes a first heating member 31 and a second heating member 32, the first heating member 31 heats the electric core 10 adjacent to the first end plate 21, and the enemy heating member 3 heats the electric core 10 adjacent to the second end plate 22. In some embodiments, a heating relay is provided to control the two heating members 3, and when any temperature is lower than the first temperature threshold, both the heating members 3 are turned on to heat the electric core 10 adjacent to the end plate 2. In other embodiments, the first heating element 31 and the second heating element 32 may be respectively controlled by providing a plurality of heating relays, when the temperature of the electric core 10 adjacent to the first end plate 21 is less than the first temperature threshold, the first heating element 31 operates, when the temperature of the electric core 10 adjacent to the second end plate 22 is less than the first temperature threshold, the second heating element 32 operates, and when the temperature of the electric core 10 with the highest temperature is greater than the first temperature threshold, both the first heating element 31 and the second heating element 32 operate, so as to improve the control accuracy of the temperature of the electric core 10.
The first heating member 31 is configured to heat when the temperature difference between the electric core 10 adjacent to the first end plate 21 and the electric core 10 having the highest temperature is greater than a set value, and the second heating member 32 is configured to heat when the temperature difference between the electric core 10 adjacent to the second end plate 22 and the electric core 10 having the highest temperature is greater than a set value; the first heating member 31 is configured to stop heating when the temperature difference between the first end plate 21 and the cell 10 having the highest temperature is smaller than a set value, and the second heating member 32 is configured to stop heating when the temperature difference between the second end plate 22 and the cell 10 having the highest temperature is smaller than a set value.
Set up heating member 3 through electric core 10 department at neighbouring end plate 2 and heat electric core 10, can promote the temperature of tip electric core 10 that easily dispels the heat, and heat when the difference in temperature of electric core 10 and the highest electric core 10 of temperature of neighbouring end plate 2 is greater than the setting value through setting up heating member 3, can make the inside temperature of battery module 100 balanced, improved the inside difference in temperature of battery module 100, reduced the capacity decay of battery module 100, prolonged the life of battery module 100. Still stop heating when the difference in temperature of the electric core 10 of neighbouring end plate 2 and the electric core 10 that the temperature is the highest through setting up heating member 3 is less than the setting value, not only can make the inside temperature of battery module 100 balanced to can avoid electric core 10 to heat up too fast. The local over-temperature condition occurs, and the safety of the battery module 100 is improved.
In some embodiments, the battery module 100 for a power plant further includes: a first temperature sensor provided on the cell 10 adjacent to the first end plate 21, a second temperature sensor provided on the cell 10 adjacent to the second end plate 22, and a third temperature sensor provided on the cell 10 having the highest temperature.
A first temperature sensor may obtain the temperature of the cell 10 adjacent to the first end plate 21, a second temperature sensor may obtain the temperature of the cell 10 adjacent to the second end plate 22, and a third temperature sensor may obtain the temperature of the highest temperature cell 10.
In some embodiments of the present application, as shown in fig. 2, the first heating member 31 and the second heating member 32 are heating films or PTC heaters.
In some embodiments of the present application, as shown in fig. 2, the first heating member 31 is configured as a first heating film 310, and the first heating film 310 includes: a first heating film body 311 facing the first end plate 21, and first flanges 312 located at both ends of the first heating film body 311 and extending toward the second end plate 22. The second heating member 32 is configured as a second heating film including: a second heating membrane body facing the second end plate 22 and second flanges located at both ends of the second heating membrane body and extending toward the first end plate 21.
Referring to fig. 1, taking the first heating film 310 as an example, the mounting structure of the first heating element 31 and the battery cell 10 is described in detail, the first heating film body 311 faces the first end plate 21 and faces the battery cell 10 adjacent to the first end plate 21, the first heating film body 311 is fixed to the battery cell 10 in a double-sided adhesive manner, the first flanges 312 are located at two ends of the first heating film body 311, the first flanges 312 extend toward the second end plate 22, and are fixed to the battery cell 10 adjacent to the first end plate 21 and the side surfaces of the stacked battery cells 10 by adhesive, the module binding band 5 can be further added to surround the side surface of the battery module 100, so as to increase the binding force and improve the mounting stability of the first heating film 310.
In some embodiments, the battery module 100 for a power plant further includes: cold drawing 4, cold drawing 4 set up in the bottom side of electric core group 1 and with the bottom laminating of electric core group 1, through setting up cold drawing 4, can wholly carry out the heat exchange to battery module 100, adjust battery module 100 temperature, promote battery module 100's performance.
In some embodiments of the present disclosure, the cold plate 4 includes a water cooling system, which can circulate water through a water pump and heat the battery module 100 through the water cooling system, so that the temperature of the battery module 100 is maintained above a first temperature threshold, thereby improving the working performance of the battery module 100.
A temperature control strategy for the battery module 100 according to an embodiment of the present application is described below with reference to fig. 3.
The temperature control strategy for the battery module 100 according to the embodiment of the present application includes at least the following steps:
detecting the temperature T1 of the cell 10 adjacent to the end plate 2 and the temperature T2 of the highest-temperature cell 10;
comparing the temperature T1 with the temperature T2 and obtaining the minimum value T of the twominAnd determining TminWhether it is less than a first threshold T0;
if yes, the cold plate 4 is heated, the heating element 3 works, and then T is judgedminIs greater than a second threshold and is at TminControlling the cold plate 4 to stop heating after the temperature is greater than the second threshold value;
if not, the cold plate 4 stops heating;
after the cold plate 4 stops heating, detecting the temperature T1 of the cell 10 adjacent to the end plate 2 and the temperature T2 of the cell 10 with the highest temperature, obtaining the temperature difference Δ T between T1 and T2, and judging whether the Δ T is less than a set value T;
if yes, the heating element 3 stops heating;
if not, the heating element 3 is heated until the temperature difference delta T is less than the set value T.
According to the temperature control strategy for the battery module 100 of the embodiment of the application, the temperature of the battery module 100 is controlled by applying the temperature control strategy, the charging and discharging performance of the battery module 100 is good, the internal temperature of the battery module 100 is uniform, the temperature difference is small, the discharging capacity of the battery module 100 can be increased, and the service life of the battery module 100 is prolonged.
A specific embodiment of a temperature control strategy for the battery module 100 according to the present application is described below with reference to fig. 1 to 3, wherein the first temperature threshold is 5 ℃, when the temperature of the battery module 100 is higher than 5 ℃, the charge/discharge performance is better, the second temperature threshold is 10 ℃, and the second temperature threshold is higher than the first temperature threshold, a preset value is provided to save the energy consumption of the entire vehicle, ensure the performance of the battery, and avoid the occurrence of repeated heating and stopping of the battery module 100. The set value T is 5 ℃, so that the internal temperature of the battery module 100 is equalized, and the internal temperature difference of the battery module 100 is improved.
In a low-temperature environment, the BMS is started, the temperature T1 of the cell 10 adjacent to the end plate 2 is detected by the first temperature sensor and the second temperature sensor, the temperature T2 of the cell 10 with the highest temperature is detected by the third temperature sensor, the temperature T1 and the temperature T2 are compared, the temperature of the battery module 100 in the low-temperature environment is lower, the minimum value of the temperature T1 and the temperature T2 is less than 5 ℃, the cold plate 4 is heated, the heating element 3 is also heated, and when the minimum value of the temperature T1 and the temperature T2 is greater than 10 ℃, the cold plate 4 stops heating. Detect this moment the temperature T1 of neighbouring end plate 2's electric core 10 and the highest temperature T2 of electric core 10 of temperature, obtain T1 and T2's difference in temperature delta T, when difference in temperature delta T is greater than 5 ℃, heating member 3 heats, it is less than 5 ℃ until difference in temperature delta T, heating member 3 also stops the heating, the charge and discharge performance of battery module 100 is better this moment, and the inside temperature of battery module 100 is even, the difference in temperature is less, increase battery module 100's discharge capacity, promote battery module 100's life.
In a high-temperature environment, the BMS is started, the temperature T1 of the cell 10 adjacent to the end plate 2 is detected by the first temperature sensor and the second temperature sensor, the temperature T2 of the cell 10 with the highest temperature is detected by the third temperature sensor, and the temperature T1 and the temperature T2 are compared, whereas the temperature of the battery module 100 in the high-temperature environment is higher, the minimum value of the temperature T1 and the temperature T2 is greater than 5 ℃, and the cold plate 4 is not heated. And detecting the temperature T1 of the battery cell 10 adjacent to the end plate 2 and the temperature T2 of the battery cell 10 with the highest temperature at the moment, obtaining the temperature difference delta T between T1 and T2, wherein the temperature difference delta T is greater than 5 ℃, heating the heating element 3 until the temperature difference delta T is less than 5 ℃, and stopping heating the heating element 3.
In a high-temperature environment, the BMS is started, the temperature T1 of the cell 10 adjacent to the end plate 2 is detected by the first temperature sensor and the second temperature sensor, the temperature T2 of the cell 10 with the highest temperature is detected by the third temperature sensor, and the temperature T1 and the temperature T2 are compared, whereas the temperature of the battery module 100 in the high-temperature environment is higher, the minimum value of the temperature T1 and the temperature T2 is greater than 5 ℃, and the cold plate 4 is not heated. The temperature T1 of the battery cell 10 adjacent to the end plate 2 and the temperature T2 of the battery cell 10 with the highest temperature at this time are detected, and the temperature difference Δ T between T1 and T2 is obtained, wherein the temperature difference Δ T is less than 5 ℃, and the heating element 3 is not heated.
The power plant according to the embodiment of the application comprises the temperature control strategy.
According to the power device of this application embodiment, through setting up above-mentioned temperature control strategy, the charge-discharge performance of battery module 100 is good to the inside temperature of battery module 100 is even, and the difference in temperature is less, increases battery module 100's discharge capacity, promotes battery module 100's life, and power device's performance is better.
According to power device of this application embodiment, including battery package 1000, as shown in fig. 1, battery package 1000 comprises a plurality of battery module 100, cold plate 4 sets up the bottom side at a plurality of battery module 100, and laminate with the bottom of a plurality of battery module 100, cold plate 4 can heat battery package 1000, all be provided with end plate 2 and heating member 3 on each battery module 100 of battery package 1000, can make the inside temperature of battery package 1000 even to the holistic temperature regulation of battery package 1000, promote the performance of battery package 1000, increase the life of battery package 1000.
In some embodiments of the present application, the power plant is a vehicle.
Other constitutions, such as the temperature sensor and the cold plate 4, and operations of the battery module 100 according to the embodiment of the present application are known to those of ordinary skill in the art and will not be described in detail herein.
In the description herein, reference to the description of the terms "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the present application have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the application, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. A battery module for a power plant, comprising:
the electric core group, the electric core group includes: the battery comprises a plurality of battery cells which are sequentially superposed;
end plates disposed at ends of the electric core groups in a stacking direction;
heating member, it is in to add the heat-insulating material setting end plate and neighbouring the end plate between the electric core, it is the highest at the temperature of electric core with neighbouring the end plate when the less value in the temperature of electric core is less than first threshold value, it is right that add heat-insulating material work neighbouring the end plate electric core heating.
2. The battery module for a power plant of claim 1, wherein the end plate comprises: first end plate and second end plate, first end plate with the second end plate sets up the both ends of electric core group in the direction of superpose, the heating member includes: first heating member and second heating member, first heating member sets up first end plate with be close to first end plate between the electric core, second heating member sets up second end plate with be close to the second end plate between the electric core, first heating member constructs to be close to first end plate electric core and temperature are the highest heat when the difference in temperature of electric core is greater than the setting value, second heating member constructs to be close to the second end plate electric core and temperature are the highest heat when the difference in temperature of electric core is greater than the setting value.
3. The battery module for a power plant of claim 2, further comprising: the battery comprises a first temperature sensor, a second temperature sensor and a third temperature sensor, wherein the first temperature sensor is arranged on the battery core adjacent to the first end plate, the second temperature sensor is arranged on the battery core adjacent to the second end plate, and the third temperature sensor is arranged on the battery core with the highest temperature.
4. The battery module for the power device according to claim 3, wherein the battery cells with the highest temperature are located in a middle area of the battery cell group in the stacking direction.
5. The battery module for a power device according to claim 2, wherein the first heating member and the second heating member are heating films or PTC heaters.
6. The battery module for a power plant as claimed in claim 2, wherein the first heating member is configured as a first heating film, the first heating film comprising: the first heating film body is opposite to the first end plate, and first flanges are positioned at two ends of the first heating film body and extend towards the second end plate; the second heating member is configured as a second heating film including: the second heating film body is opposite to the second end plate, and second flanges which are located at two ends of the second heating film body and extend towards the first end plate.
7. The battery module for a power plant of claim 2, further comprising: the cold plate is arranged at the bottom side of the electric core group and is attached to the bottom end of the electric core group.
8. A temperature control strategy for a battery module according to claim 7, comprising at least the steps of:
detecting the temperature T1 of the cell adjacent to the end plate and the temperature T2 of the highest-temperature cell;
comparing the temperature T1 with the temperature T2 and obtaining the minimum value T of the twominAnd determining TminWhether it is less than a first threshold T0;
if yes, heating the cold plate, and enabling the heating element to work;
otherwise, the cold plate stops heating and selectively controls the heating element to work according to the temperature difference delta T of T1 and T2.
9. The temperature control strategy for a battery module according to claim 8, wherein the determination of T is made after the cold plate heats upminIs greater than a second threshold and is at TminAnd controlling the cold plate to stop heating after the temperature is greater than the second threshold value.
10. A power plant comprising a temperature control strategy according to any one of claims 8-9.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115425329A (en) * | 2022-08-15 | 2022-12-02 | 南京航空航天大学 | Battery module capable of heating at uniform top speed |
Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011023180A (en) * | 2009-07-14 | 2011-02-03 | Sanyo Electric Co Ltd | Battery pack and vehicle equipped therewith |
| CN109301399A (en) * | 2018-09-30 | 2019-02-01 | 桑顿新能源科技有限公司 | A kind of multiple branch circuit region-type electrokinetic cell system heating means and system |
| CN109742458A (en) * | 2018-11-28 | 2019-05-10 | 上海松岳电源科技有限公司 | A kind of device promoted for electrokinetic cell system lithium battery group charging and discharging capabilities |
| CN109742485A (en) * | 2018-12-29 | 2019-05-10 | 北汽福田汽车股份有限公司 | The control method and device of vehicle and its battery modules heating system |
| CN110767958A (en) * | 2019-10-23 | 2020-02-07 | 合肥国轩高科动力能源有限公司 | Method for controlling temperature difference by heating power battery |
| CN210489698U (en) * | 2019-10-29 | 2020-05-08 | 蜂巢能源科技有限公司 | Battery module, battery package and vehicle |
| CN210489697U (en) * | 2019-10-29 | 2020-05-08 | 蜂巢能源科技有限公司 | Battery module, battery package and vehicle |
| CN210576120U (en) * | 2019-10-23 | 2020-05-19 | 南通隆力电子科技有限公司 | High-efficient heat dissipation of electricity core heats module |
| CN111599959A (en) * | 2020-05-29 | 2020-08-28 | 安徽江淮汽车集团股份有限公司 | Battery module and light-duty commodity circulation car |
| CN111755777A (en) * | 2020-06-24 | 2020-10-09 | 蜂巢能源科技有限公司 | Immersed cooling module and low-temperature heating control method and equipment thereof |
| CN112103597A (en) * | 2020-10-14 | 2020-12-18 | 湖北亿纬动力有限公司 | Battery cell module and battery pack |
| CN112133982A (en) * | 2020-09-24 | 2020-12-25 | 东风汽车集团有限公司 | Temperature-controllable battery module and temperature control method thereof |
| CN112186309A (en) * | 2020-10-14 | 2021-01-05 | 湖北亿纬动力有限公司 | Temperature difference control method of battery pack and battery pack |
| CN112310504A (en) * | 2019-07-29 | 2021-02-02 | 郑州深澜动力科技有限公司 | Battery module and battery box |
| CN213989035U (en) * | 2021-01-07 | 2021-08-17 | 上海兰钧新能源科技有限公司 | Novel module frame and electricity core module |
-
2021
- 2021-11-30 CN CN202111441449.8A patent/CN114142128B/en active Active
Patent Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011023180A (en) * | 2009-07-14 | 2011-02-03 | Sanyo Electric Co Ltd | Battery pack and vehicle equipped therewith |
| CN109301399A (en) * | 2018-09-30 | 2019-02-01 | 桑顿新能源科技有限公司 | A kind of multiple branch circuit region-type electrokinetic cell system heating means and system |
| CN109742458A (en) * | 2018-11-28 | 2019-05-10 | 上海松岳电源科技有限公司 | A kind of device promoted for electrokinetic cell system lithium battery group charging and discharging capabilities |
| CN109742485A (en) * | 2018-12-29 | 2019-05-10 | 北汽福田汽车股份有限公司 | The control method and device of vehicle and its battery modules heating system |
| CN112310504A (en) * | 2019-07-29 | 2021-02-02 | 郑州深澜动力科技有限公司 | Battery module and battery box |
| CN210576120U (en) * | 2019-10-23 | 2020-05-19 | 南通隆力电子科技有限公司 | High-efficient heat dissipation of electricity core heats module |
| CN110767958A (en) * | 2019-10-23 | 2020-02-07 | 合肥国轩高科动力能源有限公司 | Method for controlling temperature difference by heating power battery |
| CN210489697U (en) * | 2019-10-29 | 2020-05-08 | 蜂巢能源科技有限公司 | Battery module, battery package and vehicle |
| CN210489698U (en) * | 2019-10-29 | 2020-05-08 | 蜂巢能源科技有限公司 | Battery module, battery package and vehicle |
| CN111599959A (en) * | 2020-05-29 | 2020-08-28 | 安徽江淮汽车集团股份有限公司 | Battery module and light-duty commodity circulation car |
| CN111755777A (en) * | 2020-06-24 | 2020-10-09 | 蜂巢能源科技有限公司 | Immersed cooling module and low-temperature heating control method and equipment thereof |
| CN112133982A (en) * | 2020-09-24 | 2020-12-25 | 东风汽车集团有限公司 | Temperature-controllable battery module and temperature control method thereof |
| CN112103597A (en) * | 2020-10-14 | 2020-12-18 | 湖北亿纬动力有限公司 | Battery cell module and battery pack |
| CN112186309A (en) * | 2020-10-14 | 2021-01-05 | 湖北亿纬动力有限公司 | Temperature difference control method of battery pack and battery pack |
| CN213989035U (en) * | 2021-01-07 | 2021-08-17 | 上海兰钧新能源科技有限公司 | Novel module frame and electricity core module |
Non-Patent Citations (1)
| Title |
|---|
| 张文俊;喜冠南;朱建新;储爱华;: "混合动力汽车用锂电池组温升控制策略研究", 汽车技术, no. 03 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115425329A (en) * | 2022-08-15 | 2022-12-02 | 南京航空航天大学 | Battery module capable of heating at uniform top speed |
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