Battery thermal management device

Abstract

The utility model relates to the technical field of battery thermal management, in particular to a battery thermal management device, which comprises a control module, a power supply module, a plurality of heat dissipation plates and a heat dissipation loop, a heat dissipation box with a hollow cavity is enclosed by the plurality of heat dissipation plates, the power supply module is arranged in the hollow cavity, and the heat dissipation loop is arranged in the hollow cavity. The heat dissipation loop is arranged in the hollow cavity and surrounds the power supply module, the heat dissipation loop is further provided with a liquid inlet and a liquid outlet, the liquid inlet of the heat dissipation loop is communicated with an external liquid supply pipeline, the liquid outlet of the heat dissipation loop is communicated with an external liquid storage module, the hollow cavity is filled with cooling liquid, and the liquid storage module is communicated with the liquid inlet of the heat dissipation loop. According to the utility model, two heat dissipation modes of passive heat dissipation and active heat dissipation are provided, and the control module can select the corresponding heat dissipation mode according to the heating condition of the power supply module, so that the heat dissipation efficiency of the power supply module can be ensured, the heat dissipation energy consumption is reduced, and the energy-saving effect is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery heat management technical field more particularly, relate to a battery heat management device. BACKGROUND

[0002] With the development of the times, electric energy has been more and more widely used in various fields. The use of electric energy cannot be separated from the charging and discharging energy storage device, that is, the battery. However, the battery will release a lot of heat during charging and discharging. If these heat is not discharged in time, it will reduce the charging and discharging efficiency of the battery, reduce the service life of the battery, and even cause fire or explosion.

[0003] A water-cooled storage battery is disclosed in Chinese patent, which comprises a storage battery body, a centrifugal pump, a water storage tank, and a cooling water pipe. The cooling water pipe is fixed around the periphery of the storage battery body. The cooling water pipe is provided with a water inlet and a water outlet. The water inlet is connected to the outlet of the centrifugal pump, and the inlet of the centrifugal pump is connected to the bottom of the water storage tank. The water outlet is connected to the top of the water storage tank. The cooling water pipe provided in the invention can effectively reduce the temperature of the storage battery. However, the operation of water cooling requires continuous energy supply, which will increase the heat dissipation energy consumption of the power supply, which is not conducive to energy saving and environmental protection. SUMMARY

[0004] The purpose of the utility model is to overcome the single heat dissipation mode and high energy consumption of the prior art battery, and to provide a battery heat management device that can reduce energy consumption while ensuring power dissipation and improve energy saving effect.

[0005] To solve the above technical problems, the utility model adopts the technical scheme of:

[0006] A battery heat management device is provided, which comprises a control module, a power supply module, a plurality of heat dissipation plates and a heat dissipation circuit. The plurality of heat dissipation plates form a heat dissipation box with a hollow cavity. The power supply module is installed in the hollow cavity. The heat dissipation circuit is installed in the hollow cavity and surrounds the power supply module. The heat dissipation circuit is also provided with a liquid inlet and a liquid outlet. The liquid inlet of the heat dissipation circuit is in communication with an external liquid supply pipeline. The liquid outlet of the heat dissipation circuit is in communication with an external liquid storage module. The hollow cavity is filled with cooling liquid. The control module is used to monitor the temperature of the power supply module.

[0007] Through the arrangement, the battery thermal management device includes two heat dissipation modes, namely a passive heat dissipation mode and an active heat dissipation mode, and the control module monitors the temperature of the power module, when the temperature of the power module is lower than a preset value, the battery thermal management device is in the passive heat dissipation mode, the power module is immersed in the cooling liquid, the heat generated by the power module is first absorbed by the cooling liquid in the hollow cavity, the cooling liquid then transmits the heat to the heat dissipation plate, and the heat dissipation plate transmits the heat to the outside; when the temperature of the power module is greater than or equal to the preset value, the control module sends a signal to the liquid supply pipeline, the liquid supply pipeline starts to work, and the cooling liquid in the heat dissipation loop flows to the liquid supply pipeline, after the cooling liquid in the heat dissipation loop absorbs heat in the hollow cavity, the cooling liquid flows into the liquid supply pipeline to release heat and reduce the temperature, and the liquid supply pipeline sends the cooling liquid with low temperature into the heat dissipation loop again to absorb heat, so that the heat exchange rate in the hollow cavity can be greatly improved, and the heat dissipation efficiency of the power module is further improved. The control module selects a suitable heat dissipation mode according to the temperature of the power module, so that the temperature of the power module can be effectively controlled, energy consumption can be greatly reduced, and energy-saving efficiency can be improved.

[0008] Preferably, the heat dissipation loop is a serpentine structure connected by heat dissipation pipes, and the heat dissipation pipes are hexagonal prism pipe structures.

[0009] Through the arrangement, the heat dissipation pipes of the hexagonal prism pipe are beneficial to increase the contact area of the heat dissipation pipes and the cooling liquid in the hollow cavity, and the heat dissipation pipes of the hexagonal prism pipe are beneficial to improve the structural strength of the heat dissipation pipes, so that the service life of the device is improved.

[0010] Preferably, the inner side wall of the heat dissipation plate is in a concave-convex structure.

[0011] Through the arrangement, the area of the inner side wall of the heat dissipation plate can be increased, so that the contact area of the cooling liquid in the hollow cavity and the heat dissipation plate can be increased, the heat transfer efficiency is improved, and the passive heat dissipation effect is improved.

[0012] Preferably, the outer side wall of the heat dissipation plate is further provided with a heat dissipation fin structure.

[0013] Through the arrangement, the area of the outer side wall of the heat dissipation plate can be increased, so that the ventilation volume of the outer side wall of the heat dissipation plate is increased, and the heat dissipation efficiency of the heat dissipation plate in the passive heat dissipation mode is improved.

[0014] Preferably, the liquid supply pipeline is further connected with a water pump connected with a water source, and a control end of the water pump is electrically connected with a signal output end of the control module.

[0015] Through the setting mode, when the active heat dissipation mode is entered, the control module sends an electric signal to the water pump, the water pump works, the low-temperature coolant in the liquid supply pipeline is extracted from the liquid inlet into the heat dissipation pipeline, the coolant in the heat dissipation pipeline flows to the liquid outlet and flows into the liquid storage module.

[0016] Preferably, the water source is the liquid storage module. Through the setting mode, the temperature of the coolant flowing into the liquid storage module from the liquid outlet decreases after standing in the liquid storage module, and then the coolant is input into the heat dissipation circuit from the liquid inlet by the water pump, so that the coolant circulates.

[0017] Preferably, the liquid storage module is provided with a cooling pool, a water inlet of the cooling pool is communicated with the liquid outlet, and a water outlet of the cooling pool is communicated with a water inlet of the water pump.

[0018] Through the setting mode, the coolant flows into the cooling pool, stands in the cooling pool for heat dissipation, and then the water pump extracts the cooled coolant into the heat dissipation circuit for cooling.

[0019] Preferably, the liquid supply pipeline further comprises a flow meter, the flow meter is arranged at the water inlet pipe or the water outlet pipe, and a signal output end of the flow meter is electrically connected with a signal input end of the control module.

[0020] Through the setting mode, the power of the liquid supply pipeline is proportional to the flow, the control module can monitor the working condition of the liquid supply pipeline through the feedback of the flow meter, the control module can adjust the working power of the liquid supply pipeline according to the temperature rise of the power module, so that the power module is in a suitable temperature range, and the heat dissipation effect is matched with the working condition of the battery.

[0021] Preferably, the water pump is further provided with a power meter, and a signal output end of the power meter is electrically connected with a signal input end of the control module.

[0022] Through the setting mode, the control module can also directly detect the working condition of the water pump through the power meter, so as to ensure the accuracy of the working condition monitoring of the liquid supply pipeline and improve the accuracy of the temperature regulation.

[0023] Preferably, the liquid storage module is further provided with a heat dissipation assembly. Through the setting mode, the heat dissipation speed of the high-temperature coolant in the liquid storage module can be accelerated, so as to optimize the heat dissipation effect in the active heat dissipation mode.

[0024] Preferably, the heat dissipation assembly comprises a plurality of cooling pipes and a heat dissipation fan, the plurality of cooling pipes are arranged in parallel with each other, the heat dissipation fan is arranged beside the cooling pipes, the plurality of cooling pipes are connected in a serpentine structure, and the water outlet of the cooling pipes is communicated with the water inlet of the water pump.

[0025] Through the arrangement, the heat exchange area between the unit cooling liquid and the outside environment is greatly increased after the cooling liquid enters the plurality of cooling pipes, and the heat dissipation fan works to drive the air flow around the cooling pipes to flow rapidly, so that the heat at the cooling pipes is rapidly removed by the flowing air, thereby rapidly cooling the cooling liquid in the cooling pipes, and the cooling liquid is cooled and discharged from the water outlet of the cooling pipes into the water inlet of the water pump, and then is transported back into the heat dissipation circuit by the water pump.

[0026] Preferably, the outer side of the power module is further provided with a temperature monitoring unit, and a signal output end of the temperature monitoring unit is electrically connected with a signal input end of the control module.

[0027] Preferably, the power module is further provided with a charge and discharge detection unit, the charge and discharge detection unit is electrically connected with the power module, and the charge and discharge detection unit is further communicatively connected with the control module.

[0028] Through the arrangement, when the battery is charging and discharging, the charge and discharge monitoring unit feeds back the working condition to the processing unit, the temperature monitoring unit monitors the temperature of the power module in real time and feeds back to the processing unit, the processing unit judges the heat dissipation mode in combination with the working condition and the real-time temperature, and sends an instruction to the intelligent water pump according to the judgment to control the heat dissipation mode, thereby improving the energy saving effect and reducing the energy consumption.

[0029] Preferably, the outer side of the heat dissipation box is further provided with an audible and visual warning unit, and a signal input end of the audible and visual warning unit is electrically connected with a signal output end of the control module.

[0030] Through the arrangement, the processing unit monitors the power module, and when the power module abnormally heats, such as continuously high temperature or high temperature in a non-working state, the processing unit can issue a warning through the audible and visual warning unit, thereby reminding the user and improving the safety of the device.

[0031] Preferably, the outer side of the heat dissipation box is further provided with a display unit, and a signal input end of the display unit is electrically connected with a signal output end of the control module.

[0032] Through the arrangement, the user can directly observe the temperature condition of the power module and the working condition of the liquid supply pipeline through the display unit on the outer side of the heat dissipation box.

[0033] Preferably, the top and bottom of the power module are respectively provided with mounting frames, and the power module is detachably connected with the heat dissipation box through the two mounting frames.

[0034] Compared with the prior art, the utility model has the beneficial effects that:

[0035] (1) By setting up the heat dissipation plate, hollow cavity, heat dissipation loop and liquid supply pipeline, two heat dissipation modes of passive heat dissipation and active heat dissipation are provided for the power module, the control module can select the corresponding heat dissipation mode according to the heating condition of the power module, the heat dissipation efficiency of the power module is guaranteed, the heat dissipation energy consumption is reduced, and the energy-saving effect is improved.

[0036] (2) By setting up the flow meter and power meter to monitor the liquid supply pipeline, the working power of the liquid supply pipeline is matched with the heat generation condition of the power module, energy waste caused by excessive power of the liquid supply pipeline is avoided, and the energy-saving effect is improved.

[0037] (3) By setting up the charge and discharge monitoring unit, audible and visual warning unit and display unit, the working condition of the power module is monitored in real time, and the user can be warned in time when an abnormality occurs. BRIEF DESCRIPTION OF DRAWINGS

[0038] Figure 1 It is a general structure schematic view of the battery thermal management device of the utility model;

[0039] Figure 2 It is a heat dissipation box structure schematic view of the battery thermal management device of the utility model;

[0040] Figure 3 It is a heat dissipation loop structure schematic view of the battery thermal management device of the utility model;

[0041] Figure 4 It is a third embodiment structure schematic view of the battery thermal management device of the utility model.

[0042] The illustration marks are explained as follows:

[0043] 1, control module; 2, power module; 21, mounting frame; 3, heat dissipation plate; 31, heat dissipation fin; 4, heat dissipation box; 41, hollow cavity; 42, display unit; 5, heat dissipation loop; 51, liquid inlet; 52, liquid outlet; 53, heat dissipation pipe; 6, cooling pool; 61, electromagnetic valve; 7, water pump; 71, power meter; 8, heat dissipation assembly; 81, cooling pipe; 82, heat dissipation fan; 9, flow meter. DETAILED DESCRIPTION

[0044] The utility model makes further explanation in combination with specific implementation. Among them, the drawing is only for example explanation, shows only is the schematic diagram, and cannot be understood as the limitation to this patent; in order to better illustrate the embodiment of the utility model, some components of the drawing can be omitted, enlarged or reduced, and the size of actual product is not represented; for those skilled in the art, it is understandable that some well-known structures and their description in the drawing can be omitted.

[0045] The same or similar reference numerals in the drawings of the embodiments of the utility model correspond to the same or similar components; in the description of the utility model, it is understood that if there are terms "upper", "lower", "left", "right" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawing, only for the convenience of describing the utility model and simplifying the description, and not indicate or imply that the device or element indicated must have a particular orientation, a particular orientation and operation, therefore the positional relationship of the term described in the drawing is only for example explanation, and cannot be understood as the limitation to this patent, for the ordinary skilled in the art, can understand the specific meaning of the above terms according to the specific situation.

[0046] Embodiment 1

[0047] As Figures 1 to 3 It is the first embodiment of a battery heat management device of the utility model, including control module 1, power module 2, a plurality of heat dissipation plate 3 and heat dissipation circuit 5, a plurality of heat dissipation plate 3 surrounds the heat dissipation box 4 with hollow cavity 41, power module 2 is installed in hollow cavity 41, heat dissipation circuit 5 is installed in hollow cavity 41 and is around power module 2 setting, heat dissipation circuit 5 is also provided with liquid inlet 51 and liquid outlet 52, the liquid inlet 51 of heat dissipation circuit 5 is communicated with the liquid supply pipe of external connection, the liquid outlet 52 of heat dissipation circuit 5 is communicated with the liquid storage module of external connection, hollow cavity 41 is loaded with coolant, control module 1 is used for monitoring the temperature of power module 2.

[0048] Through the setting mode, the battery thermal management device includes two heat dissipation modes, namely passive heat dissipation mode and active heat dissipation mode, the control module 1 monitors the temperature of the power module 2, when the temperature of the power module 2 is lower than the preset value, the battery thermal management device is in the passive heat dissipation mode, the power module 2 is immersed in the cooling liquid, the heat generated is first absorbed by the cooling liquid in the hollow cavity 41, the cooling liquid transmits the heat to the heat dissipation plate 3, and the heat dissipation plate 3 transmits the heat to the outside; when the temperature of the power module 2 is greater than or equal to the preset value, the control module 1 sends a signal to the liquid supply pipeline, the liquid supply pipeline injects the cooling liquid into the liquid inlet 51 of the heat dissipation circuit 5, the cooling liquid in the heat dissipation circuit 5 flows to the liquid outlet 52, and the cooling liquid in the heat dissipation circuit 5 is discharged from the liquid outlet 52 and placed in the liquid storage module to dissipate heat after heat absorption in the hollow cavity 41; the liquid supply pipeline continuously sends the cooling liquid at low temperature into the heat dissipation circuit 5 to absorb heat, so that the heat exchange rate in the hollow cavity 41 can be greatly improved, and the heat dissipation efficiency of the power module 2 is further improved. The control module 1 selects the appropriate heat dissipation mode according to the temperature of the power module 2, so that the temperature of the power module 2 can be effectively controlled, energy consumption can be greatly reduced, and energy saving efficiency can be improved.

[0049] As an embodiment of the utility model, the heat dissipation circuit 5 is a serpentine structure connected by heat dissipation pipes 53, and the heat dissipation pipe 53 is a hexagonal prism pipe structure.

[0050] Through the setting mode, the heat dissipation pipe 53 of the hexagonal prism pipe is favorable to increase the contact area of the heat dissipation pipe 53 and the cooling liquid in the hollow cavity 41, and the heat dissipation pipe 53 of the hexagonal shape is favorable to improve the structural strength of the heat dissipation pipe 53, so that the service life of the device is improved.

[0051] As an embodiment of the utility model, the heat dissipation circuit 5 includes a plurality of parallel heat dissipation pipes 53, and the heat dissipation pipe 53 is a hexagonal prism pipe structure.

[0052] Through the setting mode, the heat dissipation pipe 53 of the hexagonal prism pipe is favorable to increase the contact area of the heat dissipation pipe 53 and the cooling liquid in the hollow cavity 41, and the heat dissipation pipe 53 of the hexagonal shape is favorable to improve the structural strength of the heat dissipation pipe 53, so that the service life of the device is improved.

[0053] As an embodiment of the utility model, the outer side wall of the heat dissipation plate 3 is further provided with a heat dissipation fin 31 structure.

[0054] Through the setting mode, the outer side wall area of the heat dissipation plate 3 is favorable to be enlarged, so that the ventilation amount of the outer side wall of the heat dissipation plate 3 is increased, and the heat dissipation efficiency of the heat dissipation plate 3 in the passive heat dissipation mode is improved.

[0055] As an embodiment of the utility model, the outer side of the power module 2 is further provided with a temperature monitoring unit, and a signal output end of the temperature monitoring unit is electrically connected with a signal input end of the control module 1.

[0056] Through the setting mode, when the battery charges and discharges, the charge and discharge monitoring unit feeds back the working condition to the processing unit, the temperature monitoring unit monitors the temperature of the power module 2 in real time and feeds back to the processing unit, the processing unit judges the heat dissipation mode in combination with the working condition and real-time temperature, and sends an instruction to the intelligent water pump 7 according to the judgment, controls the heat dissipation mode, thereby improving the energy saving effect and reducing the energy consumption.

[0057] As an embodiment of the utility model, the outer side of the heat dissipation box 4 is further provided with an audible and visual warning unit, and a signal input end of the audible and visual warning unit is electrically connected with a signal output end of the control module 1.

[0058] Through the setting mode, the processing unit monitors the power module 2, when the power module 2 appears abnormal heating condition, such as continuous high temperature, high temperature in non-working state, the processing unit can issue a warning through the audible and visual warning unit, thereby reminding the user, and improving the safety of the device

[0059] As an embodiment of the utility model, the outer side of the heat dissipation box 4 is further provided with a display unit 42, and a signal input end of the display unit 42 is electrically connected with a signal output end of the control module 1.

[0060] Through the setting mode, the user can directly observe the temperature condition of the power module 2 and the working condition of the liquid supply pipeline through the display unit 42 on the outer side of the heat dissipation box 4.

[0061] As an embodiment of the utility model, the top and bottom of the power module 2 are respectively provided with mounting frames 21, and the power module 2 is detachably connected with the heat dissipation box 4 through the two mounting frames 21.

[0062] Embodiment 2

[0063] The following is a second embodiment of the battery thermal management device of the utility model, and the embodiment is similar to embodiment 1, and the difference lies in that the liquid supply pipeline is further limited.

[0064] As an embodiment of the utility model, the liquid supply pipeline is further connected with a water pump 7 connected with a water source, and a control end of the water pump 7 is electrically connected with a signal output end of the control module 1.

[0065] Through the setting mode, when the active heat dissipation mode is entered, the control module 1 sends an electric signal to the water pump 7, the water pump 7 works, the low-temperature coolant in the liquid supply pipeline is extracted from the liquid inlet 51 into the heat dissipation pipe 53, the heat absorption completed coolant in the heat dissipation pipe 53 flows to the liquid outlet 52 and flows into the liquid storage module; compared with the passive heat dissipation mode, the active heat dissipation mode further improves the heat exchange efficiency through the coolant flowing along the heat dissipation circuit 5, and the power module 2 is better cooled.

[0066] As an embodiment of the utility model, the water source is the liquid storage module. Through the setting mode, the coolant flowing into the liquid storage module from the liquid outlet 52 is cooled after standing in the liquid storage module, and then is input into the heat dissipation circuit 5 from the liquid inlet 51 by the water pump 7, realizing the circulation of the coolant.

[0067] As an embodiment of the utility model, the liquid storage module is provided with a cooling pool 6, the water inlet of the cooling pool 6 is communicated with the liquid outlet 52, and the water outlet of the cooling pool 6 is communicated with the water inlet of the water pump 7.

[0068] Through the setting mode, the coolant flows into the cooling pool 6, stands in the cooling pool 6 to dissipate heat, and then the cooled coolant is extracted into the heat dissipation circuit 5 by the water pump 7 to cool.

[0069] As an embodiment of the utility model, the cooling pool 6 is further provided with an electromagnetic valve 61 at the water inlet, and the electromagnetic valve 61 is in communication connection with the control module 1. When the active heat dissipation mode is performed, the electromagnetic valve 61 is opened, the water pump 7 works, and the coolant circulates along the path of the water pump 7, the heat dissipation circuit 5, the electromagnetic valve 61 and the cooling pool 6; when the passive heat dissipation mode is performed, the electromagnetic valve 61 is closed, the coolant in the heat dissipation circuit 5 cannot flow out, and only acts as a heat transfer medium to passively transfer heat in the hollow cavity 41.

[0070] As an embodiment of the utility model, the liquid supply pipeline further comprises a flow meter 9, the flow meter 9 is arranged at the water inlet pipe or the water outlet pipe, and the signal output end of the flow meter 9 is electrically connected with the signal input end of the control module 1.

[0071] Through the setting mode, the power of the liquid supply pipeline is proportional to the flow, the control module 1 can monitor the working condition of the liquid supply pipeline through the feedback of the flow meter 9; the control module 1 can adjust the working power of the liquid supply pipeline according to the temperature rise of the power module 2, so that the power module 2 is in a suitable temperature range, and the heat dissipation effect is matched with the battery working condition.

[0072] As an embodiment of the utility model, the water pump 7 is further provided with a power meter 71, and the signal output end of the power meter 71 is electrically connected with the signal input end of the control module 1.

[0073] Through the setting mode, the control module 1 can also directly detect the working condition of the water pump 7 through the power meter 71, thereby ensuring the accuracy of the working condition monitoring of the liquid supply pipeline and improving the precision of temperature regulation.

[0074] Embodiment 3

[0075] As Figure 4 The third embodiment of the battery thermal management device is shown, which is similar to the first embodiment, and the difference is that the setting mode of the heat dissipation part is different, and the liquid supply pipeline further comprises a flow meter 9 and a power meter 71.

[0076] As an embodiment of the present application, the liquid storage module further comprises a heat dissipation assembly 8. Through this setting mode, the heat dissipation speed of the high-temperature cooling liquid in the liquid storage module can be accelerated, thereby optimizing the heat dissipation effect under the active heat dissipation mode.

[0077] As an embodiment of the present application, the heat dissipation part comprises a plurality of cooling pipes 81 and a heat dissipation fan 82, the plurality of cooling pipes 81 are arranged in a rectangular shape, the heat dissipation fan 82 is arranged beside the cooling pipes 81, the water inlet of the cooling pipes 81 is communicated with the water inlet pipe, and the water outlet of the cooling pipes 81 is communicated with the water inlet of the water pump 7.

[0078] Through this setting mode, after the cooling liquid enters the plurality of cooling pipes 81, the heat exchange area of unit cooling liquid with the outside is greatly increased, at the same time, the heat dissipation fan 82 works to drive the air flow around the cooling pipes 81 to flow quickly, and the flowing gas quickly takes away the heat at the cooling pipes 81, thereby quickly completing the cooling of the cooling liquid in the cooling pipes 81, the cooling liquid completes heat dissipation in the process of flowing through the cooling pipes 81, and enters the water inlet of the water pump 7 from the water outlet of the cooling pipes 81, and is then transported back to the heat dissipation loop 5 by the water pump 7.

[0079] Obviously, the above embodiments of the present application are only examples for clearly illustrating the present application, and are not a limitation on the embodiments of the present application. For ordinary skilled in the art, other different forms of changes or variations can be made on the basis of the above description. Here, it is not necessary and impossible to exhaust all the embodiments. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the claims of the present application.

Claims

1. A battery thermal management device, characterized by, The utility model provides a kind of cooling device, including control module (1), power module (2), several heat sinks (3) and heat dissipation loop (5), several the heat sink (3) is enclosed and is provided with hollow cavity (41) heat dissipation box (4), the power module (2) is installed in the hollow cavity (41), the heat dissipation loop (5) is installed in the hollow cavity (41) and is arranged around the power module (2), the heat dissipation loop (5) is also provided with liquid inlet (51) and liquid outlet (52), the liquid inlet (51) of the heat dissipation loop (5) is communicated with external liquid supply pipeline, the liquid outlet (52) of the heat dissipation loop (5) is communicated with external liquid storage module, the hollow cavity (41) is loaded with cooling liquid, the control module (1) is used to monitor the temperature of the power module (2).

2. The battery thermal management device of claim 1, wherein, The heat dissipation loop (5) is a serpentine structure connected by heat dissipation pipes (53), and the heat dissipation pipes (53) are hexagonal prism pipe structures.

3. The battery thermal management device of claim 1, wherein, The outer side wall of the heat sink (3) is also provided with a heat dissipation fin (31) structure.

4. The battery thermal management device of claim 1, wherein, The liquid supply pipeline is also connected with a water pump (7) connected with a water source, and the control end of the water pump (7) is electrically connected with the signal output end of the control module (1).

5. The battery thermal management device of claim 4, wherein, The water source is the liquid storage module.

6. The battery thermal management device of claim 5, wherein, A flow meter (9) is also installed on the liquid supply pipeline, and the signal output end of the flow meter (9) is electrically connected with the signal input end of the control module (1).

7. The battery thermal management device of claim 4, wherein, The liquid storage module is also provided with a heat dissipation assembly (8).

8. The battery thermal management device of claim 7, wherein, The heat dissipation assembly (8) includes a plurality of cooling pipes (81) and a heat dissipation fan (82), and the plurality of cooling pipes (81) are connected in a serpentine structure. The heat dissipation fan (82) is arranged beside the cooling pipes (81). The water inlet of the cooling pipes (81) is communicated with the liquid outlet (52), and the water outlet of the cooling pipes (81) is communicated with the water inlet of the water pump (7).

9. The battery thermal management device of any one of claims 4 to 8, wherein, The liquid storage module is provided with a cooling pool (6), and the water inlet of the cooling pool (6) is communicated with the liquid outlet (52), and the water outlet of the cooling pool (6) is communicated with the water inlet of the water pump (7).

10. The battery thermal management device of claim 9, wherein, The outer side of the heat dissipation box (4) is also provided with a display unit (42), and the signal input end of the display unit (42) is electrically connected with the signal output end of the control module (1).

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