CN109524741B - Liquid cooling plate combined with refrigerating sheet, power battery heat dissipation liquid cooling system and control method - Google Patents
Liquid cooling plate combined with refrigerating sheet, power battery heat dissipation liquid cooling system and control method Download PDFInfo
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- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
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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
- H01M10/633—Control systems characterised by algorithms, flow charts, software details or the like
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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
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- H01M10/60—Heating or cooling; Temperature control
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- H01M10/655—Solid structures for heat exchange or heat conduction
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- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
- H01M10/6567—Liquids
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Abstract
The invention discloses a liquid cooling plate combined with a refrigerating piece, a power battery heat dissipation liquid cooling system and a control method, wherein the refrigerating piece made by using the Peltier effect is arranged at the bottom of a liquid cooling plate flow passage, the refrigerating piece is contacted with a heat conduction block made of a high heat conduction silicon material to realize high-efficiency heat exchange with cooling liquid in each flow passage, a controller controls the circulating flow of the cooling liquid and the power output of the refrigerating piece in real time according to the temperature information of a battery module in the heat dissipation process of a liquid cooling system, the cold end of the refrigerating piece instantly generates low temperature when in work, the temperature of the cooling liquid around the refrigerating piece is rapidly reduced through the heat conduction of the heat conduction block, the rapid reduction of the highest temperature and the maximum temperature difference between the modules and in a single module is realized, meanwhile, the controller can adjust the output power of each refrigerating piece according to the temperature information of the module in real time, and realize the temperature balance in the rapid temperature reduction process, the invention improves the rapid heat dissipation performance of the power battery and the temperature balance in the heat dissipation process, effectively control the temperature rise and the difference in temperature of battery module.
Description
Technical Field
The invention relates to a power battery heat management technology for a new energy automobile, in particular to a liquid cooling plate capable of achieving rapid and balanced heat dissipation, a liquid cooling heat dissipation system formed by the liquid cooling plate and a liquid cooling control method.
Background
In the face of increasingly serious energy crisis and environmental pollution problems, energy-saving and environment-friendly new energy automobiles are receiving more and more attention from people. Automobile manufacturers in various countries increasingly invest in developing pure Electric Vehicles (EV) and Hybrid Electric Vehicles (HEV). At present, one of the key factors restricting the further popularization of new energy automobiles is the mileage problem, which mainly comes from the fact that the energy density of a power battery is low, and the thermal stability of the power battery is remarkably reduced along with the increase of the energy density of the battery, so that stricter requirements are provided for a thermal management system of the power battery.
At present, aiming at the heat management mode of a power battery, the heat transfer media are mainly divided into three types: air cooling, liquid cooling and phase change cooling. The air cooling system is simple in structure, but poor in cooling effect, the heat conductivity coefficient is low during phase-change cooling in a single phase, a certain distance is reserved from application, and the liquid cooling has a good cooling effect, so that the air cooling system becomes a mainstream scheme of a power battery heat management system. The liquid cooling plate is generally arranged below or on the side face of the power battery module, the flow channel is divided inside to guide the flow of cooling liquid, when the power battery module is cooled, the water pump starts the cooling liquid to flow into the inlet of the liquid cooling plate, the cooling liquid flows to the outlet through the internal flow channel in a circulating mode, the heat of the power battery is taken away through heat convection with the high-temperature module, the cooling liquid flowing out of the liquid cooling plate passes through the radiator and then is led out to the air, and therefore the circulating cooling of the liquid cooling system is achieved. Due to the grouping application of the power battery monomers, the heat quantity is more in the middle area, the number of the edge areas is small, the temperature imbalance among the battery monomers is increased, the problem cannot be effectively solved by a liquid cooling system with a common structure, serious potential safety hazards exist in long-term use, and obviously, the liquid cooling system needs to be optimally designed to improve the balanced heat dissipation of the power battery.
Patent grant publication No. CN 104253289B, published 2017, 6 and 9, the name of the invention creation is a power battery module heat dissipation unit and a power battery heat dissipation module, the application discloses a power battery module heat dissipation unit and a battery heat dissipation module, and the uniform temperature of a power battery monomer is realized by additionally arranging a conducting plate; the patent publication No. CN 107403975A, published 2017, 11 and 28, discloses a current equalizing device and method for a battery energy storage liquid cooling system, and discloses a current equalizing device for a battery energy storage liquid cooling system, wherein battery modules are connected in parallel, and a throttle pipe is arranged at an inlet of each module, so that the temperature uniformity of the modules is ensured on the premise of ensuring the heat dissipation effect. The defects of the patent are as follows: 1) the temperature difference between the battery modules cannot be effectively reduced in time; 2) the temperature rise and temperature difference among the single batteries in the module can not be effectively reduced; 3) the heat dissipation process is slow and takes a long time.
Disclosure of Invention
In view of the above disadvantages of the prior art, the invention provides a peltier effect-based rapid balanced heat dissipation liquid cooling system for a power battery and a control method thereof, which are used for a power battery pack of a new energy automobile, realize rapid balanced heat dissipation among battery monomers, maintain a normal working temperature range of the power battery pack, and improve the service performance and the service life of the power battery.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows: the utility model provides a power battery that combines refrigeration piece is with quick balanced heat dissipation liquid cooling system, includes: coolant liquid circulation system and temperature control system, coolant liquid circulation system include liquid cold plate, water inlet, delivery port, water pump, relief valve, storage water tank, radiator and water pipe, temperature control system includes battery module, battery, controller, power cord, high-pressure control interface, high-pressure control line, low pressure control line, temperature sensor and temperature information acquisition line. The battery module is located above the liquid cooling plate, the temperature sensors are arranged on the surfaces of single batteries in each battery module, the temperature information acquired by the temperature sensors is transmitted to the controller by the temperature information acquisition lines for analysis and processing, the storage battery supplies power to the controller through a power line, the controller is respectively connected with the water pump and the pressure release valve through low-voltage control lines to realize control of the flowing state of the cooling liquid, meanwhile, the high-voltage control lines are connected to a high-voltage control interface located on the liquid cooling plate, the controller adjusts the output voltage of the high-voltage control lines according to the analysis and processing results of the battery temperature information to realize control of the rapid balanced heat dissipation process, the water inlet and the water outlet are located on two sides of the liquid cooling plate, the high-voltage control interface and the water outlet are located on the same side, but the relative vertical height is lower, the cooling liquid circulation system enables the water outlet of the liquid cooling plate to be sequentially connected with the radiator through a water pipe, The water storage tank, the pressure release valve, the water pump and the water inlet are connected.
The liquid cooling plate comprises a liquid cooling plate upper cover and a liquid cooling plate base, the liquid cooling plate upper cover and the liquid cooling plate base are made of light high-heat-conduction materials such as aluminum alloy and are bonded together in a seamless mode through ultrasonic welding, a water inlet, a water outlet and a high-pressure control interface are arranged on the liquid cooling plate base, a flow channel partition plate, an interlayer, a heat conduction block, heat conduction fins, a refrigerating sheet, heat dissipation fins, a fixing device and a high-pressure control line are arranged inside the base, the liquid cooling plate base is divided into an upper layer and a lower layer through the interlayer, the upper layer is a liquid flowing area, the lower layer is a heat dissipation control area, the water inlet and the water outlet are respectively located on two sides of the liquid cooling plate, cooling liquid flows in from the water inlet, flows through a plurality of flow channels divided by the flow channel partition plate and then flows out from the water outlet, a plurality of square concave holes are formed in the interlayer corresponding to each flow channel, the size of the hole is large at the top and the small at the bottom, and the heat conduction block is made of high-heat-conduction graphite material, the cooling fin is arranged on the upper portion of the concave hole, the heat exchange area of the heat conduction block and cooling liquid is further increased, meanwhile, the turbulence degree of the cooling liquid is enhanced through the protruded heat conduction fins, the convection heat exchange coefficient of the cooling liquid and solid is improved, the refrigerating fin is arranged on the lower portion of the concave hole and fixed on an interlayer through a fixing device, the cold end of the refrigerating fin is in contact with the heat conduction block, the contact surface of the refrigerating fin is coated with heat conduction silica gel, the hot end of the refrigerating fin extends out of the lower layer of the liquid cooling plate base, the heat radiating fins are arranged on the surface of the hot end of the refrigerating fin, the wind tunnel at the peripheral side of the liquid cooling plate base is matched with the refrigerating fin, the heat of the hot end of the refrigerating fin is rapidly dissipated, the refrigerating fin is connected with a high-voltage control interface through a high-voltage control line, and the refrigerating fins can work independently relative to each other.
The invention provides a liquid cooling system control method for a rapid balanced heat dissipation liquid cooling system for a power battery combined with a refrigerating sheet, which comprises the following steps:
the temperature sensor transmits the acquired temperature information to the controller in real time, and the controller analyzes and processes the temperature information to obtain two types of temperature data, wherein one type is the highest temperature T in a single battery modulemax.si(i ═ 1,2, 3.; for module number) and the maximum temperature difference Tdif.si(i 1,2, 3.; stands for module number), and the other is the maximum temperature difference T between battery modulesmax.wj(j represents the serial number of the high-temperature module), and respectively corresponding the collected temperature data to the set maximum temperature upper limit value T in the single modulemax.sMaximum temperature difference upper limit value Tdif.sAnd the maximum temperature difference upper limit value T between the modulesmax.wContrast, if the highest temperature or the maximum temperature difference in a certain battery module exceed the upper limit value, the controller controls the water pump to be opened to enable the cooling liquid to flow circularly, each battery module corresponds to one liquid-cooling plate internal flow channel, the refrigeration piece corresponding to the lower part of the highest temperature position of the battery module works, low temperature is rapidly generated at the cold end of the refrigeration piece, the temperature of the surrounding cooling liquid is rapidly reduced through heat conduction of the heat conduction block, and the high-temperature electric core and the cooling liquid in the module are rapidly cooledLiquid heat exchange is enhanced, so that the growing trend of the highest temperature and the maximum temperature difference in the battery module is quickly and effectively inhibited, meanwhile, the controller analyzes and gives reasonable output voltage of a plurality of refrigerating sheets in the flow channel according to the temperature information acquired in real time, controls the refrigerating power of the refrigerating sheets, and realizes quick and balanced heat dissipation of the battery module until all temperature data in the module are in a reasonable temperature range; if the maximum temperature difference between the battery modules exceeds the upper limit value, the controller controls the cooling liquid to circularly flow, a plurality of refrigerating pieces work simultaneously in a corresponding flow passage below the high-temperature module, the temperature of the cooling liquid in the whole flow passage is rapidly reduced, the whole heat of the high-temperature module is rapidly and uniformly taken away, the controller reasonably adjusts the refrigerating power of each refrigerating piece in the module heat dissipation process according to the temperature information collected in real time, the rapid reduction of the maximum temperature difference between the modules is realized, meanwhile, the rise of the maximum temperature difference in the battery modules is not caused, when two types of temperature data of the batteries meet the requirements, the liquid cooling heat dissipation process is finished, and each refrigerating piece stops working.
Compared with the prior art, the invention has the following beneficial effects:
1. according to the rapid and balanced cooling liquid system for the power battery, which is combined with the refrigerating sheets, the refrigerating sheets arranged in different runners are utilized, the refrigerating power of the refrigerating sheets is reasonably adjusted, the temperature difference among battery modules can be timely and effectively reduced, and the problem of temperature accumulation of the middle module is effectively solved;
2. according to the rapid and balanced cooling liquid system for the power battery combined with the refrigerating plates, the refrigerating plates arranged at different positions in the front and back of each flow passage are utilized, the refrigerating power of the refrigerating plates is reasonably adjusted, the temperature rise and the temperature difference among the single batteries in the module can be effectively reduced in time, and the temperature distribution consistency of the single batteries in the module is maintained;
3. according to the rapid balanced cooling liquid cooling system for the power battery combined with the refrigerating sheet, the rapid cooling effect of the refrigerating sheet is utilized, and the finned heat conducting block made of high-heat-conducting silicon materials is matched, so that the temperature of cooling liquid can be rapidly reduced, and rapidness and balance of temperature reduction in a cooling process are realized.
Drawings
FIG. 1 is a system diagram of a rapid equalization heat sink fluid cooling device of the present invention;
FIG. 2 is a side cross-sectional view of a liquid cooling plate of the present invention;
FIG. 3 is a top view of a liquid cooled plate base of the present invention;
FIG. 4 is a perspective view of a liquid cooling plate according to the present invention;
FIG. 5 is a flow chart of the operation of the heat dissipation system of the present invention;
in the figure, 1-liquid cooling plate, 2-water pump, 3-pressure release valve, 4-water storage tank, 5-radiator, 6-controller, 7-accumulator, 8-battery module, 9-high pressure control interface, 10-water outlet, 11-water inlet, 12-water pipe, 13-low pressure control line, 14-high pressure control line, 15-temperature information acquisition line, 16-temperature sensor, 17-power line, 18-liquid cooling plate upper cover, 19-liquid cooling plate base, 20-flow channel partition, 21-partition, 22-wind tunnel, 23-heat conduction block, 24-heat conduction fin, 25-fixing device, 26-heat dissipation fin and 27-refrigeration piece.
Detailed Description
The structure and the working principle of the rapid equalization heat dissipation liquid cooling device for a power battery combined with a refrigeration sheet of the invention are further explained with reference to the attached drawings.
As shown in fig. 1, an embodiment of the present invention provides a rapid balanced cooling system for a power battery, which is combined with a cooling plate, and includes: coolant liquid circulating system and temperature control system, coolant liquid circulating system include liquid cold plate 1, water inlet 11, delivery port 10, water pump 2, relief valve 3, storage water tank 4, radiator 5 and water pipe 12, temperature control system includes battery module 8, battery 7, controller 6, power cord 17, high-pressure control interface 9, high-pressure control line 14, low pressure control line 13, temperature sensor 16 and temperature information acquisition line 15. The battery module 8 is located above the liquid cooling plate 1, the temperature sensor 16 is arranged on the surface of each single battery in each battery module 8, the temperature information acquisition line 15 transmits the acquired temperature information to the controller 6 for analysis and processing, the storage battery 7 supplies power to the controller 6 through the power line 17, the controller 6 is respectively connected with the water pump 2 and the pressure release valve 3 through the low-voltage control line 13 to realize control of the flowing state of the cooling liquid, meanwhile, the high-voltage control line 14 is connected to the high-voltage control interface 9, the controller 6 regulates the output voltage of the high-voltage control line 14 according to the analysis and processing result of the battery temperature information to realize control of the rapid balanced heat dissipation process, the cooling liquid water inlet 11 and the cooling liquid water outlet 10 are located on two sides of the liquid cooling plate 1, the high-voltage control interface 9 and the cooling liquid water outlet 10 are located on the same side, but the relative vertical height is lower than the cooling liquid outlet 10, the cooling liquid cooling plate water outlet 10 is sequentially connected with the radiator 5 through the water pipe 12, The water storage tank 4, the pressure release valve 3, the water pump 2 and the water inlet 11 are connected.
As shown in fig. 2,3 and 4, a liquid cooling plate 1 of the rapid balanced heat dissipation liquid cooling system for a power battery combined with a cooling fin according to an embodiment of the present invention includes a liquid cooling plate upper cover 18 and a liquid cooling plate base 19, which are made of light high thermal conductive materials such as aluminum alloy, and are seamlessly bonded together by ultrasonic welding, where the liquid cooling plate base 19 includes a water inlet 11, a water outlet 10, a flow channel partition plate 20, an interlayer 21, a heat conduction block 23, a heat conduction fin 24, a cooling fin 27, a heat dissipation fin 26, a fixing device 25, a high voltage control interface 9 and a high voltage control line 14; the liquid cooling plate base 19 is divided into an upper layer and a lower layer by an interlayer 21, the upper layer is a liquid flowing area, the lower layer is a heat dissipation control area, a water inlet 11 and a water outlet 10 are respectively positioned at two sides of the liquid cooling plate 1, cooling liquid flows in from the water inlet 11, flows through a plurality of flow channels divided by a flow channel partition plate 20 and then flows out from the water outlet 10, a plurality of square concave holes are formed on the interlayer 21 corresponding to each flow channel, the size of the hole is large at the upper part and small at the lower part, a heat conduction block 23 is made of high heat conduction graphite material and is positioned at the upper part of the concave hole, a sealing waterproof colloid is coated on the periphery of the heat conduction block, a heat conduction fin 24 is arranged at the upper part of the heat conduction block 23, the heat exchange area between the heat conduction block 23 and the cooling liquid is further increased, meanwhile, the turbulence degree of the cooling liquid is enhanced by the protruded heat conduction fin 24, the convection heat exchange coefficient between the cooling liquid and the solid is improved, a refrigerating sheet 27 is arranged at the lower part of the concave hole and is fixed on the interlayer 21 by a fixing device 25, the cold junction and the contact of heat conduction piece 23 of refrigeration piece 27, contact surface scribbles heat conduction silica gel, the hot junction stretches out to be located 19 lower floors of liquid cold plate base, there is radiating fin 26 at the surface mounting of 27 hot junctions of refrigeration piece, cooperate the wind-tunnel 22 that liquid cold plate base 19 was seted up all around, realize the thermal quick dissipation in 27 hot junctions of refrigeration piece, each refrigeration piece 27 passes through high-voltage control line 14 and is connected with control interface 9, each refrigeration piece can work independently relatively each other.
As shown in fig. 5, a method for controlling a rapid balanced cooling liquid system for a power battery combined with a cooling plate according to an embodiment of the present invention is as follows: the temperature sensor 16 transmits the acquired temperature information to the controller 6 in real time, and the controller 6 analyzes and processes the temperature information to obtain two types of temperature data, wherein one type is the highest temperature T in a single battery modulemax.si(i ═ 1,2, 3.; for module number) and the maximum temperature difference Tdif.si(i 1,2, 3.; stands for module number), and the other is the maximum temperature difference T between battery modulesmax.wj(j represents the serial number of the high-temperature module) respectively corresponding to the set maximum temperature upper limit value T in the single modulemax.sMaximum temperature difference upper limit value Tdif.sAnd the maximum temperature difference upper limit value T between the modulesmax.wComparing the measured values with each other, if the maximum temperature T in a certain battery module 8 is reachedmax.siOr maximum temperature difference Tdif.siWhen the temperature of the battery module 8 exceeds the upper limit value, the controller 6 controls the water pump 2 and the pressure release valve 3 to be opened through the low-voltage control line to enable cooling liquid to flow circularly, each battery module 8 corresponds to a flow channel inside the liquid cooling plate, the refrigerating sheet 27 corresponding to the lower part of the highest temperature position of the battery module 8 works, low temperature is rapidly generated at the cold end of the refrigerating sheet 27, heat conduction is carried out through the heat conduction block 23, the temperature of the surrounding cooling liquid is rapidly reduced, heat exchange between a high-temperature battery core in the module 8 and the cooling liquid is enhanced, the growing trend of the highest temperature and the maximum temperature difference in the battery module 8 is rapidly and effectively inhibited, meanwhile, the controller 6 gives reasonable output voltages of the plurality of refrigerating sheets 27 in the flow channel according to the temperature information collected in real time, controls the refrigerating power of the refrigerating sheets 27, and achieves rapid and balanced heat dissipation of the battery module 8 until all temperature data in the module are in a reasonable temperature range; if the maximum temperature difference T between the battery modules 8max.wjExceed the upper limit value, controller 6 control cooling liquid circulation flow, a plurality of refrigeration pieces 27 simultaneous working in the runner that this high temperature module 8 below corresponds, the cooling liquid temperature reduces rapidly in the whole runner, the whole heat of module 8 is evenly taken away rapidly, controller 6 is according to the temperature information of gathering in real time, the refrigeration power of each refrigeration piece 27 in the reasonable adjustment module 8 radiating process, realize the mouldThe fast reduction of the biggest difference in temperature between group 8 simultaneously, does not cause the rising of the biggest difference in temperature in the battery module 8, and when two kinds of temperature data of battery all satisfied the requirement, the liquid cooling heat dissipation process was ended, each refrigeration piece 27 stop work.
The above-listed detailed description is only a specific description of a possible embodiment of the present invention, and they are not intended to limit the scope of the present invention, and equivalent embodiments or modifications made without departing from the technical spirit of the present invention should be included in the scope of the present invention.
Claims (8)
1. The utility model provides a power battery cooling liquid cooling system that dispels heat which characterized in that includes: a coolant circulation system and a temperature control system; the cooling liquid circulating system comprises a liquid cooling plate (1), a water inlet (11), a water outlet (10), a water pump (2), a pressure release valve (3), a water storage tank (4), a radiator (5) and a pipeline, wherein the water inlet (11) and the water outlet (10) are positioned on the liquid cooling plate (1), and the cooling liquid circulating system is used for communicating the water outlet (10) of the liquid cooling plate with the water inlet (11) through the radiator (5), the water storage tank (4), the pressure release valve (3), the water pump (2) in sequence through the pipeline to form a cooling liquid loop;
the liquid cooling plate (1) comprises a liquid cooling plate upper cover (18) and a liquid cooling plate base (19); the liquid cooling plate is characterized in that a water inlet (11), a water outlet (10) and a high-voltage control interface (9) are arranged on the liquid cooling plate base (19), and the base (19) internally comprises a flow channel partition plate (20), an interlayer (21), a heat conducting block (23), heat conducting fins (24), a refrigerating sheet (27), heat radiating fins (26), a fixing device (25) and a high-voltage control line (14); the interior of the liquid cooling plate base (19) is divided into an upper layer and a lower layer through an interlayer (21), wherein the upper layer is a liquid flowing area, and the lower layer is a heat dissipation control area; the cooling liquid flows in from the water inlet (11), flows through a plurality of flow channels divided by the flow channel partition plates (20), and then flows out from the water outlet (10); a plurality of square concave holes are formed in the corresponding interlayer (21) in each flow channel, and the size of the hole is large at the top and small at the bottom; the heat conduction block (23) is located at the upper part of the concave hole and sealed with the interlayer (21), and heat conduction fins (24) are arranged at the upper part of the heat conduction block (23) and used for increasing the heat exchange area of the cooling liquid above the heat conduction block (23) and the interlayer (21) and enhancing the turbulence degree of the cooling liquid; the refrigerating sheet (27) is installed at the lower part of the concave hole, the refrigerating sheet (27) is fixed on the bottom surface of the interlayer (21) through a fixing device (25), the cold end of the refrigerating sheet (27) is in contact with the heat conducting block (23), the hot end of the refrigerating sheet (27) extends out to be positioned at the lower layer of the liquid cooling plate base (19), a radiating fin (26) is installed on the surface of the hot end of the refrigerating sheet (27) and used for quickly dissipating heat of the hot end of the refrigerating sheet (27), the refrigerating sheet (27) is connected with the high-voltage control interface (9) through a high-voltage control line (14), and the refrigerating sheets (27) can work relatively independently; the liquid cooling plate upper cover (18) and the liquid cooling plate base (19) are made of light high-heat-conductivity materials and are seamlessly bonded together through ultrasonic welding; the heat conducting block (23) is made of a high heat conducting graphite material; the contact surface of the cold end of the refrigeration sheet (27) and the heat conduction block is coated with heat conduction silica gel; wind tunnels (22) are arranged on the peripheral side surfaces of the liquid cooling plate base (19);
the temperature control system comprises a battery module (8), a controller (6), a high-voltage control interface (9), a high-voltage control line (14), a low-voltage control line (13), a temperature sensor (16) and a temperature information acquisition line (15); the battery module (8) is located above the liquid cooling plate (1); the temperature sensor (16) is used for collecting the temperature of the single battery in the battery module (8), and the collected temperature information is transmitted to the controller (6) through the temperature information collecting line (15) for analysis and processing; the controller (6) is connected with the water pump (2) and the pressure release valve (3) through a low-voltage control line (13) respectively, the control of the flowing state of the cooling liquid is realized by controlling the states of the water pump (2) and the pressure release valve (3), meanwhile, a high-voltage control line (14) of the controller (6) is connected to a high-voltage control interface (9) located on the liquid cooling plate, the output voltage of the high-voltage control line (14) is adjusted according to the analysis and processing results of the temperature information of the battery by the controller (6), and the control of the rapid balanced heat dissipation process of the power battery is realized.
2. The cooling system for the power battery cooling liquid according to claim 1, wherein the water inlet (11) and the water outlet (10) are located at two ends of the cooling plate (1); the high-pressure control interface (9) and the water outlet (10) are positioned on the same side, but the relative vertical height is lower than the water outlet (10).
3. The cooling system for the power battery cooling liquid as claimed in claim 1, wherein the temperature control system further comprises a storage battery (7), a power line (17); the storage battery (7) supplies power to the controller (6) through a power line (17).
4. A liquid cooling plate combined with a refrigerating sheet is characterized by comprising a liquid cooling plate upper cover (18) and a liquid cooling plate base (19); the liquid cooling plate is characterized in that a water inlet (11), a water outlet (10) and a high-voltage control interface (9) are arranged on a liquid cooling plate base (19), and the base internally comprises a flow channel partition plate (20), an interlayer (21), a heat conduction block (23), heat conduction fins (24), a refrigeration sheet (27), heat dissipation fins (26), a fixing device (25) and a high-voltage control line (14); the interior of the liquid cooling plate base is divided into an upper layer and a lower layer through an interlayer (21), wherein the upper layer is a liquid flowing area, and the lower layer is a heat dissipation control area; the cooling liquid flows in from the water inlet (11), flows through a plurality of flow channels divided by the flow channel partition plates (20), and then flows out from the water outlet (10); a plurality of square concave holes are formed in the corresponding interlayer (21) in each flow channel, and the size of the hole is large at the top and small at the bottom; the heat conduction block (23) is located at the upper part of the concave hole and sealed with the interlayer, and a heat conduction fin (24) is arranged at the upper part of the heat conduction block; install the lower part of cave refrigeration piece (27), refrigeration piece (27) are fixed on the interlayer bottom surface through fixing device (25), refrigeration piece (27) can produce the Peltier effect, and its cold junction and heat conduction piece (23) contact, hot junction stretch out and are located liquid cooling plate base lower floor, have radiating fin (26) at the surface mounting of refrigeration piece hot junction for the thermal quick dissipation in refrigeration piece hot junction, refrigeration piece (27) are connected with high-pressure control interface (9) through high-pressure control line (14), and each refrigeration piece (27) can work relatively independently each other.
5. The liquid cooling plate combined with the refrigerating plate as recited in claim 4, wherein the liquid cooling plate upper cover (18) and the liquid cooling plate base (19) are made of light high heat conductive material and are seamlessly bonded together by ultrasonic welding; the heat conducting block (23) is made of a high heat conducting graphite material.
6. A liquid cold plate combined with a cold plate according to claim 4, wherein the contact surface of the cold end of the cold plate (27) and the heat conducting block is coated with heat conducting silica gel.
7. The liquid cooling plate combined with the refrigerating plate as claimed in claim 4, wherein the side surface of the periphery of the base (19) of the liquid cooling plate is provided with wind tunnels (22).
8. The control method of the power battery cooling system is characterized in that the temperature sensor (16) is used for transmitting the acquired temperature information to the controller (6) in real time, and the controller (6) analyzes and processes the acquired temperature information to obtain two types of temperature data, wherein one type is the highest temperature T in a single battery modulemax.si(i ═ 1,2, 3.; for module number) and the maximum temperature difference Tdif.si(i 1,2, 3.; stands for module number), and the other is the maximum temperature difference T between battery modulesmax.wj(j represents the serial number of the high-temperature module), and respectively corresponding the collected temperature data to the set maximum temperature upper limit value T in the single modulemax.sMaximum temperature difference upper limit value Tdif.sAnd the maximum temperature difference upper limit value T between the modulesmax.wComparing, if the highest temperature or the maximum temperature difference in a certain battery module (8) exceeds the upper limit value, the controller (6) controls the water pump (2) to be opened to enable cooling liquid to flow circularly, each battery module (8) corresponds to a flow channel inside a liquid cooling plate, the controller (6) controls the refrigeration sheets (27) corresponding to the lower part of the highest temperature position of the battery module (8) to work, the cold end of the refrigeration sheets (27) rapidly generates low temperature, the temperature of the surrounding cooling liquid is rapidly reduced through the heat conduction of the heat conduction block (23), the heat exchange between the high-temperature electric core and the cooling liquid in the module is enhanced, the growing trend of the highest temperature and the maximum temperature difference in the battery module (8) is rapidly and effectively inhibited, meanwhile, the controller (6) analyzes and gives reasonable output voltages of a plurality of refrigeration sheets (27) in the flow channel according to the temperature information acquired in real time, and controls the refrigeration power of the refrigeration sheets (27), the rapid balanced heat dissipation of the battery module (8) is realized until all temperature data in the module are in a reasonable temperature range; if the maximum temperature difference between the battery modules exceeds the upper limit value, the controller (6) controls the cooling liquid to flow circularly, and a plurality of systems are arranged in corresponding flow channels below the high-temperature modulesCold piece (27) simultaneous working, the cooling liquid temperature reduces rapidly in the whole runner, the whole heat of this high temperature module is evenly taken away rapidly, controller (6) are according to the temperature information of real-time collection, the refrigeration power of each refrigeration piece among the reasonable adjustment module radiating process, realize the quick reduction of the maximum difference in temperature between the module, and simultaneously, the rising of the maximum difference in temperature in the battery module is not caused, when two kinds of temperature data of battery all satisfy the requirement, the liquid cooling radiating process finishes, each refrigeration piece (27) stop work.
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Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109950647B (en) * | 2019-03-27 | 2020-11-20 | 联想(北京)有限公司 | Battery system and processing method |
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| CN114039124A (en) * | 2021-11-09 | 2022-02-11 | 镇江市高等专科学校 | Power battery multistage heat dissipation system based on magnetic refrigeration effect and control method |
| CN114388929A (en) * | 2021-11-12 | 2022-04-22 | 长安大学 | Cooling system and method for automobile power battery module |
| CN115799713A (en) * | 2022-12-03 | 2023-03-14 | 浙大城市学院 | Lightweight new energy battery cooling device |
| CN116365109B (en) * | 2023-06-01 | 2023-08-04 | 苏州精控能源科技有限公司 | Thermal management method and device for cylindrical lithium battery |
| CN117977059A (en) * | 2024-03-28 | 2024-05-03 | 深圳市顺熵科技有限公司 | Battery liquid cooling system and liquid cooling method |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202127079U (en) * | 2011-06-23 | 2012-01-25 | 同济大学 | Water-cooling system of power battery pack of electric automobile based on thermoelectric cooling |
| JP2013098082A (en) * | 2011-11-02 | 2013-05-20 | Toyota Industries Corp | Temperature control mechanism for battery |
| CN203166039U (en) * | 2013-03-12 | 2013-08-28 | 郑州宇通客车股份有限公司 | Power battery liquid cooling device |
| CN103512080A (en) * | 2013-10-27 | 2014-01-15 | 王涛 | Semiconductor temperature-difference power generation heating water heater system by using waste heat of chimney and boiler |
| CN105576113A (en) * | 2016-02-16 | 2016-05-11 | 广东富信科技股份有限公司 | Semiconductor refrigeration component |
| CN105591176A (en) * | 2014-11-11 | 2016-05-18 | 福特全球技术公司 | Magnetically Controlled Traction Battery Thermal Plate |
| CN106374162A (en) * | 2016-11-02 | 2017-02-01 | 上海工程技术大学 | Battery module heat management method and apparatus based on thermo-electric effect |
| CN206259460U (en) * | 2016-09-09 | 2017-06-16 | 合普新能源科技有限公司 | A kind of heat abstractor of power battery pack system |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103280608A (en) * | 2013-01-22 | 2013-09-04 | 江苏大学 | Battery module containing double water cooling plates |
| KR101534913B1 (en) * | 2013-06-17 | 2015-07-08 | 현대자동차주식회사 | Battery pack air cooling structure provided with thermoelectric element and method thereof |
| CN106058370B (en) * | 2016-08-03 | 2018-11-09 | 江苏大学 | A kind of double water cooling electrokinetic cell systems and its control method based on heat conductive silica gel |
| CN207651636U (en) * | 2018-01-04 | 2018-07-24 | 福建省汽车工业集团云度新能源汽车股份有限公司 | A kind of automobile power cell packet heat management system and automobile |
-
2018
- 2018-10-08 CN CN201811166375.XA patent/CN109524741B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202127079U (en) * | 2011-06-23 | 2012-01-25 | 同济大学 | Water-cooling system of power battery pack of electric automobile based on thermoelectric cooling |
| JP2013098082A (en) * | 2011-11-02 | 2013-05-20 | Toyota Industries Corp | Temperature control mechanism for battery |
| CN203166039U (en) * | 2013-03-12 | 2013-08-28 | 郑州宇通客车股份有限公司 | Power battery liquid cooling device |
| CN103512080A (en) * | 2013-10-27 | 2014-01-15 | 王涛 | Semiconductor temperature-difference power generation heating water heater system by using waste heat of chimney and boiler |
| CN105591176A (en) * | 2014-11-11 | 2016-05-18 | 福特全球技术公司 | Magnetically Controlled Traction Battery Thermal Plate |
| CN105576113A (en) * | 2016-02-16 | 2016-05-11 | 广东富信科技股份有限公司 | Semiconductor refrigeration component |
| CN206259460U (en) * | 2016-09-09 | 2017-06-16 | 合普新能源科技有限公司 | A kind of heat abstractor of power battery pack system |
| CN106374162A (en) * | 2016-11-02 | 2017-02-01 | 上海工程技术大学 | Battery module heat management method and apparatus based on thermo-electric effect |
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