A new energy vehicle battery thermal management device

Abstract

The application relates to the technical field of new energy vehicles, in particular to a new energy vehicle battery thermal management device, which comprises a battery box and further comprises: a liquid cooling temperature control structure installed in the battery box, the liquid cooling temperature control structure comprises multiple groups of support seats, the support seats are movably connected with battery units, and the battery box is connected with a liquid cooling heat exchange mechanism; a double-path air cooling structure connected with the battery box, the double-path air cooling structure comprises an elastic sleeve, the elastic sleeve is connected with a group of cold air shunting mechanisms, the elastic sleeve is connected with a control valve, the support seats are fixedly connected with arc-shaped heat conduction sheets, and the battery box is connected with a deformation heat conduction mechanism. The liquid cooling temperature control structure and the double-path air cooling structure are matched with each other to cool the battery units in a mode that combines air cooling and liquid cooling, dust-containing air is prevented from directly entering the battery box, the double-path air cooling structure is adjusted to utilize the cold air discharged by the vehicle to reduce the temperature when the external environment temperature is too high, and the energy-saving cooling effect is achieved.

Description

Technical Field

[0001] This invention relates to the field of new energy vehicle technology, specifically a thermal management device for new energy vehicle batteries. Background Technology

[0002] The key components of new energy vehicles are the battery and the motor, which directly affect the vehicle's range and safety. Among these, the greatest threats to safety are battery overheating and motor overheating. The motor works in conjunction with the vehicle's cooling system for temperature control, while the battery's temperature is managed through the vehicle's battery thermal management system. The essence of battery thermal management is the regulation of the battery's heat dissipation rate and method.

[0003] To reduce energy consumption, cooling the batteries of new energy vehicles typically employs either direct fan cooling or cooling water circulation. Direct fan cooling requires directing airflow into the battery box to cool each individual battery. This results in external air being directly blown into the battery box, which, while cooling the battery, allows external dirt to easily accumulate on it. If the ambient temperature is too high, the cooling efficiency will further decrease, and may even increase the battery temperature, leading to weak heat dissipation stability. While cooling water circulation can reduce the impact of the external environment on battery cooling, this method relies entirely on the vehicle's cooling water system. On one hand, motor heating can affect battery cooling; on the other hand, if the cooling water system malfunctions, the new energy vehicle's battery thermal management will fail. Adding an additional cooling system, such as a thermoelectric cooler, will generate additional power consumption, affecting the vehicle's range. Existing new energy vehicle battery thermal management equipment cannot simultaneously achieve both stability and energy efficiency in battery thermal management. Summary of the Invention

[0004] The purpose of this invention is to provide a thermal management device for new energy vehicle batteries to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A thermal management device for a new energy vehicle battery includes a battery box, wherein a battery cover is movably connected to the battery box, and further includes:

[0007] A liquid-cooled temperature control structure installed inside a battery box includes multiple sets of support seats fixedly installed inside the battery box, arranged in two rows. Each support seat is movably connected to a battery unit. Each set of support seats is fixedly connected to two sets of elastic metal sheets. Each elastic metal sheet is fixedly connected to a first temperature sensor, which is in contact with the battery unit. The battery box is connected to a liquid-cooled heat exchange mechanism, which is in contact with the battery unit.

[0008] A dual-channel air-cooling structure connected to the battery box includes two sets of elastic sleeves fixedly connected to the battery box. The two sets of elastic sleeves are connected to a cold air distribution mechanism. A control valve is fixedly connected to the end of the elastic sleeve away from the cold air distribution mechanism. The control valve is fixedly connected to the battery box. An arc-shaped heat-conducting plate that is movably connected to the battery unit is fixedly connected to the support base. The arc-shaped heat-conducting plate is fixedly connected to the elastic sleeve. A deformable heat-conducting mechanism is installed through the battery box. The deformable heat-conducting mechanism guides the heat of the battery unit to the deformable heat-conducting mechanism through the arc-shaped heat-conducting plate by contacting the arc-shaped heat-conducting plate. A second temperature sensor is fixedly installed at the bottom of the battery box.

[0009] As a further improvement of the present invention: the battery unit includes a protective shell movably connected to the support base, the protective shell is fixedly connected to a lithium battery in contact with the liquid cooling heat exchange mechanism, the protective shell is movably connected to the liquid cooling heat exchange mechanism, the lithium battery is movably connected to the arc-shaped heat-conducting plate, and the lithium battery is in contact with the first temperature sensor.

[0010] As a further improvement of the present invention: the liquid cooling heat exchange mechanism includes an inlet diverter fixedly connected to the battery box, an outlet diverter fixedly connected to the battery box, the inlet diverter and the outlet diverter being connected together to multiple sets of serpentine heat exchange tubes, the serpentine heat exchange tubes being movably connected to the protective shell, and the serpentine heat exchange tubes being in contact with the lithium battery.

[0011] As a further improvement of the present invention: the air diversion mechanism includes a diversion head fixedly connected to the battery box, the diversion head being connected to two sets of elastic sleeves, an air filter being fixedly connected to the diversion head, a reversing valve being fixedly installed at the air inlet end of the air filter, an exhaust pipe being fixedly connected to the reversing valve, and a connecting joint being fixedly connected to the reversing valve.

[0012] As a further improvement of the present invention: the deformable heat conduction mechanism includes multiple sets of heat exchange frames disposed below the support base. The heat exchange frames are fixedly connected to the battery box. Multiple sets of grooves are formed on the heat exchange frames. Heat insulation sleeves are slidably connected to the grooves. Heat conduction blocks adapted to the arc-shaped heat conduction plates are fixedly connected to the heat insulation sleeves. The heat conduction blocks are fixedly connected to the elastic sleeves. Multiple sets of heat insulation sleeves disposed on the same heat exchange frame are jointly fixedly connected to a set of synchronization frames. The synchronization frames are slidably connected to the support base. Inclined blocks are fixedly connected to the synchronization frames. A synchronization power assembly is installed inside the battery box. The synchronization power assembly is slidably connected to the inclined blocks.

[0013] As a further improvement of the present invention: the synchronous power assembly includes a motor base fixedly installed in the battery box, a first motor fixedly connected to the motor base, a lead screw fixedly connected to the output shaft of the first motor, a movable frame slidably installed in the battery box threadedly connected to the lead screw, a plurality of inclined slot frames fixedly connected to the movable frame, a drive slot slidably connected to the inclined block on the inclined slot frame, and a rotating support seat fixedly installed in the battery box rotatably connected to the lead screw.

[0014] As a further improvement of the present invention: the air filter includes a housing fixedly installed between the splitter head and the reversing valve, a plurality of filter screens are movably installed inside the housing, and a maintenance door is movably connected to the housing.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] After the battery cells are installed in their respective support brackets, the liquid-cooled heat exchange mechanism comes into contact with the battery cells. Cooling water is then supplied to the liquid-cooled heat exchange mechanism by the vehicle's cooling water supply system, allowing the cooling water to remove the heat generated during the battery cell's power generation process. During vehicle operation, the onboard computer controls the deformable heat-conducting mechanism to abut against the arc-shaped heat-conducting fins. As the vehicle moves, the entire device moves, and air flows through the deformable heat-conducting mechanism across the surface of the battery box, allowing the heat from the battery cells to be transferred to the deformable heat-conducting mechanism via the arc-shaped heat-conducting fins for heat dissipation. The vehicle's onboard computer monitors the battery cells via a first temperature sensor. Temperature measurement is performed simultaneously by the onboard computer and a second temperature sensor to measure the ambient temperature. When the ambient temperature is higher than the battery cell temperature, the onboard computer controls the deformable heat-conducting mechanism to separate from the bow-shaped heat-conducting sheet. If the battery cell needs cooling and the vehicle's air conditioning system is supplying cold air, the external circulation mode of the air conditioning system is activated, exhausting the cold air from inside the vehicle into the cold air distribution mechanism. The cold air then enters the elastic sleeve through the cold air distribution mechanism, and the control valve opens. At this time, the cold air passing through the elastic sleeve cools the battery cell through the bow-shaped heat-conducting sheet, and then the cold air enters the ambient environment through the control valve. This invention uses a combination of liquid cooling temperature control structure and dual-channel air cooling structure to achieve a combined air cooling and liquid cooling method for the battery cell, improving the stability of the cooling operation of this device, avoiding overheating of the battery cell due to the failure of a single cooling system, and preventing dusty air from directly entering the battery box. By adjusting the dual-channel air cooling structure, natural wind and vehicle exhaust air are used for cooling, making the device balance energy saving and stability in battery thermal management. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0018] Figure 2This is a three-dimensional structural schematic diagram from another perspective of the present invention.

[0019] Figure 3 This is a bottom view of the present invention.

[0020] Figure 4 This is a schematic diagram of the internal structure of the present invention after the battery cover is removed.

[0021] Figure 5 This is a three-dimensional structural diagram of the liquid-cooled temperature control structure and the dual-channel air-cooling structure of the present invention working together.

[0022] Figure 6 This is a schematic diagram of the internal three-dimensional structure of the present invention, showing the interaction between a partial liquid-cooled temperature control structure and a partial dual-channel air-cooling structure.

[0023] Figure 7 For the present invention Figure 6 A magnified view of a portion of point A in the middle.

[0024] Figure 8 This is a three-dimensional structural diagram of the synchronization frame, inclined block, heat insulation sleeve, and heat-conducting block of the present invention.

[0025] Figure 9 This is a three-dimensional structural diagram of the elastic sleeve and the arc-shaped heat-conducting sheet of the present invention.

[0026] Figure 10 This is a three-dimensional structural diagram of the elastic sleeve of the present invention.

[0027] Figure 11 This is a three-dimensional structural diagram of the synchronous power assembly of the present invention.

[0028] Figure 12 This is a schematic diagram showing the structure of the air filter, reversing valve, exhaust pipe, connector, housing, filter screen, and maintenance door of the present invention in cooperation with each other.

[0029] Figure 13 This is a three-dimensional structural diagram of the liquid inlet diverter, liquid outlet diverter, and serpentine heat exchanger fittings of the present invention.

[0030] In the diagram: 1. Battery box; 2. Battery cover; 3. Connector mounting slot; 4. Liquid-cooled temperature control structure; 5. Support base; 6. Battery cell; 7. Elastic metal sheet; 8. First temperature sensor; 9. Liquid-cooled heat exchange mechanism; 10. Dual-channel air-cooling structure; 11. Elastic sleeve; 12. Cold air diversion mechanism; 13. Control valve; 14. Bow-shaped heat-conducting plate; 15. Deformable heat-conducting mechanism; 16. Second temperature sensor; 17. Protective shell; 18. Lithium battery; 19. Liquid inlet diversion component; 20. Liquid outlet diversion component ; 21. Serpentine heat exchanger fitting; 22. Diverter head; 23. Air filter; 24. Reversing valve; 25. Exhaust pipe; 26. Connecting joint; 27. Heat exchanger rack; 28. Groove; 29. ​​Heat insulation jacket; 30. Synchronization rack; 31. Inclined block; 32. Synchronization power assembly; 33. Motor base; 34. First motor; 35. Lead screw; 36. Moving frame; 37. Inclined slot frame; 38. Rotating support base; 39. Housing; 40. Filter screen; 41. Maintenance door; 42. Heat-conducting block; 43. Drive slot. Detailed Implementation

[0031] The technical solution of the present invention will be further described in detail below with reference to specific embodiments.

[0032] Example 1, see Figures 1 to 13 As shown, a new energy vehicle battery thermal management device includes a battery box 1, a battery cover 2 movably connected to the battery box 1, and a connector mounting groove 3 extending through one end of the battery box 1 to provide space for installing a socket or plug. The device also includes:

[0033] A liquid-cooled temperature control structure 4 is installed inside the battery box 1. The liquid-cooled temperature control structure 4 includes multiple sets of support seats 5 fixedly installed inside the battery box 1. The multiple sets of support seats 5 are arranged in two rows in the battery box 1. The support seats 5 are movably connected to battery units 6. Each set of support seats 5 is fixedly connected to two sets of elastic metal sheets 7. The elastic metal sheets 7 are fixedly connected to a first temperature sensor 8. The first temperature sensor 8 is in contact with the battery unit 6. The battery box 1 is connected to a liquid-cooled heat exchange mechanism 9, which is in contact with the battery unit 6.

[0034] A dual-channel air-cooling structure 10 connected to the battery box 1 includes two sets of elastic sleeves 11 fixedly connected to the battery box 1. The two sets of elastic sleeves 11 are connected to a set of cold air diversion mechanism 12. A control valve 13 is fixedly connected to one end of the elastic sleeve 11 away from the cold air diversion mechanism 12. The control valve 13 is fixedly connected to the battery box 1. An arc-shaped heat-conducting plate 14 movably connected to the battery unit 6 is fixedly connected to the support base 5. The arc-shaped heat-conducting plate 14 is fixedly connected to the elastic sleeve 11. A deformable heat-conducting mechanism 15 is provided through the battery box 1. The deformable heat-conducting mechanism 15 guides the heat of the battery unit 6 to the deformable heat-conducting mechanism 15 through the arc-shaped heat-conducting plate 14 by contacting the arc-shaped heat-conducting plate 14. A second temperature sensor 16 is fixedly installed at the bottom of the battery box 1.

[0035] After the battery unit 6 is installed in each set of support seats 5, the liquid cooling heat exchange mechanism 9 comes into contact with the battery unit 6. Then, the cooling water supply structure in the vehicle supplies cooling water into the liquid cooling heat exchange mechanism 9, so that the cooling water carries away the heat generated by the battery unit 6 during the power generation process. During vehicle operation, the on-board computer controls the deformable heat conduction mechanism 15 to abut against the arc-shaped heat conduction plate 14. As the vehicle moves and drives the entire device to move, air flows through the deformable heat conduction mechanism 15 through the surface of the battery box 1, so that the heat of the battery unit 6 is transferred to the deformable heat conduction mechanism 15 through the arc-shaped heat conduction plate 14 for heat dissipation. The vehicle's on-board computer measures the temperature of the battery unit 6 through the first temperature sensor 8. Simultaneously, the vehicle computer measures the temperature of the external environment through the second temperature sensor 16. When the temperature of the external environment is higher than the temperature of the battery unit 6, the vehicle computer controls the deformable heat conduction mechanism 15 to separate from the bow-shaped heat conduction sheet 14. If the battery unit 6 needs to be cooled at this time, and the vehicle's air conditioning system is supplying cold air, the external circulation mode of the vehicle's air conditioning system is activated, and the cold air inside the vehicle is discharged into the cold air diversion mechanism 12. Then, the cold air enters the elastic sleeve 11 through the cold air diversion mechanism 12, and the control valve 13 is opened. At this time, the cold air passing through the elastic sleeve 11 cools the battery unit 6 through the bow-shaped heat conduction sheet 14. After that, the cold air enters the external environment through the control valve 13. This invention utilizes a combination of liquid-cooled temperature control structure 4 and dual-channel air-cooling structure 10 to cool the battery unit 6, thereby improving the stability of the cooling operation and preventing overheating of the battery unit 6 due to the failure of a single cooling system. It also prevents dusty air from directly entering the battery box 1. By adjusting the dual-channel air-cooling structure 10, natural wind and vehicle exhaust air are used for cooling, enabling the device to balance energy saving and stability in battery thermal management.

[0036] In one embodiment, the battery unit 6 includes a protective shell 17 movably connected to the support base 5. A lithium battery 18 is fixedly connected to the protective shell 17 and contacts the liquid-cooled heat exchange mechanism 9. The protective shell 17 is movably connected to the liquid-cooled heat exchange mechanism 9, and the lithium battery 18 is movably connected to the arc-shaped heat-conducting plate 14. The lithium battery 18 is also in contact with the first temperature sensor 8. The contact between the lithium battery 18 and the liquid-cooled heat exchange mechanism 9 and the arc-shaped heat-conducting plate 14 facilitates heat transfer and cooling of the lithium battery 18. The protective shell 17 is precisely mounted on the support base 5 by docking with the liquid-cooled heat exchange mechanism 9.

[0037] In one embodiment, the liquid cooling heat exchange mechanism 9 includes an inlet diverter 19 fixedly connected to the battery box 1, and an outlet diverter 20 fixedly connected to the battery box 1. The inlet diverter 19 and the outlet diverter 20 are connected to multiple sets of serpentine heat exchange tubes 21. Each set of serpentine heat exchange tubes 21 is fixedly connected to the inlet diverter 19 and the outlet diverter 20. The serpentine heat exchange tubes 21 are movably connected to the protective shell 17 and are in contact with the lithium battery 18. After the cooling water supply structure in the vehicle is connected to the inlet diverter 19 and the outlet diverter 20, the cooling water flows into the serpentine heat exchange tubes 21 through the inlet diverter 19, and then carries away the heat generated during the power generation process of the lithium battery 18. The cooling water that has absorbed the heat then flows into the outlet diverter 20, and then the heated cooling water re-enters the cooling water supply structure for cooling, thereby achieving circulating liquid cooling.

[0038] In one embodiment, the air conditioning splitting mechanism 12 includes a splitting head 22 fixedly connected to the battery box 1. The splitting head 22 is connected to two sets of elastic sleeves 11. An air filter 23 is fixedly connected to the splitting head 22. A reversing valve 24 is fixedly installed at the air inlet end of the air filter 23. An exhaust pipe 25 is fixedly connected to the reversing valve 24. A connector 26 is fixedly connected to the reversing valve 24. The connector 26 is used to connect with the air outlet end of the vehicle's external circulation system so as to introduce the cold air inside the vehicle into the connector 26. Under normal circumstances, the reversing valve 24 connects the exhaust pipe 25 and the connector 26 to discharge the cold air entering the connector 26 to the outside environment through the exhaust pipe 25. If it is necessary to introduce the cold air into the elastic sleeve 11, the reversing valve 24 connects the connector 26 and the air filter 23, so that the cold air discharged from the vehicle's external circulation enters the air filter 23. After the air filter 23 filters the dust in the cold air, it introduces the cold air into the elastic sleeve 11 so that the cold air can contact the arc-shaped heat conduction plate 14 and absorb heat.

[0039] In one embodiment, the deformable heat-conducting mechanism 15 includes multiple sets of heat exchange racks 27 disposed below the support base 5. The heat exchange racks 27 are fixedly connected to the battery box 1, and the heat exchange racks 27 penetrate the lower end face of the battery box 1. The lower end face of the heat exchange racks 27 is in direct contact with the external environment. During vehicle operation, air flows over the lower end face of the heat exchange racks 27. Multiple sets of grooves 28 are formed on the heat exchange racks 27. The grooves 28 have a structure that is wider at the bottom and narrower at the top. A heat insulation sleeve 29 is slidably connected to the grooves 28. A heat-conducting block 42 adapted to the arc-shaped heat-conducting plate 14 is fixedly connected to the heat-conducting sleeve 29. The heat-insulating sleeve 29 is used to form thermal isolation between the heat-conducting block 42 and the heat exchange frame 27. The heat-conducting block 42 is fixedly connected to the elastic sleeve 11. Multiple sets of heat-insulating sleeves 29 set on the same heat exchange frame 27 are fixedly connected to a set of synchronization frames 30. The synchronization frame 30 is slidably connected to the support base 5. The synchronization frame 30 is fixedly connected to the inclined block 31. The battery box 1 is equipped with a synchronous power assembly 32. The synchronous power assembly 32 is slidably connected to the inclined block 31. The synchronous power assembly 32 drives the inclined block 31 to move, the inclined block 31 drives the synchronous frame 30 to move, and the synchronous frame 30 drives the heat-conducting block 42 to move upward through the heat insulation sleeve 29. Then, the lower end of the heat-conducting block 42 contacts the groove wall at the upper end of the groove 28. When the heat-conducting block 42 contacts the arc-shaped heat-conducting plate 14 and the heat exchange frame 27 at the same time, the heat-conducting block 42 directly conducts the heat of the arc-shaped heat-conducting plate 14 to the heat exchange frame 27. If the temperature of the external environment is higher than the temperature of the lithium battery 18, the moving synchronous frame 30 drives the heat-conducting block 42 to move downward through the heat insulation sleeve 29, so that the heat-conducting block 42 and the arc-shaped heat-conducting plate 14 are separated from each other, and it is convenient for cold air to pass through the channel formed by the elastic sleeve 11, the arc-shaped heat-conducting plate 14 and the heat-conducting block 42.

[0040] In one embodiment, the synchronous power assembly 32 includes a motor base 33 fixedly installed inside the battery box 1. A first motor 34 is fixedly connected to the motor base 33. A lead screw 35 is fixedly connected to the output shaft of the first motor 34. The lead screw 35 is threadedly connected to a movable frame 36 slidably installed inside the battery box 1. Multiple sets of inclined slot frames 37 are fixedly connected to the movable frame 36. A drive groove 43 is provided on the inclined slot frame 37, which is slidably connected to an inclined block 31. The lead screw 35 is rotatably connected to a rotating support seat 38 fixedly installed inside the battery box 1. The first motor 34 drives the lead screw 35 to rotate, and the rotating lead screw 35 drives the movable frame 36 to slide inside the battery box 1. The movable frame 36 moves the inclined slot frames 37, and the drive groove 43 in the inclined slot frames 37 presses against the inclined block 31, allowing the inclined block 31 to move under the pressure of the drive groove 43. The moving inclined block 31 then moves the synchronous frame 30.

[0041] Example 2, based on Example 1, see [link / reference] Figure 2 , Figure 5 , Figure 12The air filter 23 includes a housing 39 fixedly installed between the splitter head 22 and the reversing valve 24. Multiple sets of filter screens 40 are movably installed within the housing 39, and a maintenance door 41 is movably connected to the housing 39. The filter screens 40 are used to filter and intercept dust in the cold air, and the maintenance door 41 allows for disassembly and replacement of the filter screens 40, thereby improving the practicality of the invention.

[0042] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the invention.

Claims

1. A thermal management device for a new energy vehicle battery, comprising a battery box, wherein a battery cover is movably connected to the battery box, characterized in that, Also includes: A liquid-cooled temperature control structure installed inside a battery box includes multiple sets of support seats fixedly installed inside the battery box, arranged in two rows. Each support seat is movably connected to a battery unit. Each set of support seats is fixedly connected to two sets of elastic metal sheets. Each elastic metal sheet is fixedly connected to a first temperature sensor, which is in contact with the battery unit. The battery box is connected to a liquid-cooled heat exchange mechanism, which is in contact with the battery unit. A dual-channel air-cooling structure connected to the battery box includes two sets of elastic sleeves fixedly connected to the battery box. Both sets of elastic sleeves are connected to a common cold air distribution mechanism. A control valve is fixedly connected to the end of each elastic sleeve away from the cold air distribution mechanism. The control valve is fixedly connected to the battery box. An arc-shaped heat-conducting plate movably connected to the battery unit is fixedly connected to the support base. The arc-shaped heat-conducting plate is fixedly connected to the elastic sleeves. A deformable heat-conducting mechanism is installed through the battery box. The deformable heat-conducting mechanism directs the heat from the battery unit to the arc-shaped heat-conducting plate through contact with the arc-shaped heat-conducting plate. A second temperature sensor is fixedly installed at the bottom of the battery box. The deformable heat-conducting mechanism includes multiple heat exchange racks located below the support base. The heat exchange racks are fixedly connected to the battery box, and multiple recesses are formed on the heat exchange racks. A heat insulation sleeve is slidably connected to a groove and a recess. A heat-conducting block adapted to an arc-shaped heat-conducting plate is fixedly connected to the heat insulation sleeve. The heat-conducting block is fixedly connected to an elastic sleeve. Multiple sets of heat insulation sleeves arranged on the same heat exchange frame are jointly fixedly connected to a set of synchronization frames. The synchronization frames are slidably connected to a support base. An inclined block is fixedly connected to the synchronization frames. A synchronization power assembly is installed inside the battery box. The synchronization power assembly is slidably connected to the inclined block. The synchronization power assembly includes a motor base fixedly installed inside the battery box. A first motor is fixedly connected to the motor base. A lead screw is fixedly connected to the output shaft of the first motor. The lead screw is threadedly connected to a movable frame slidably installed inside the battery box. Multiple sets of inclined slot frames are fixedly connected to the movable frame. A drive groove is opened on the inclined slot frame to slidably connect to the inclined block. The lead screw is rotatably connected to a rotating support base fixedly installed inside the battery box.

2. The new energy vehicle battery thermal management device according to claim 1, characterized in that, The battery unit includes a protective shell movably connected to a support base. A lithium battery in contact with a liquid cooling heat exchange mechanism is fixedly connected to the protective shell. The protective shell is movably connected to the liquid cooling heat exchange mechanism. The lithium battery is movably connected to an arc-shaped heat-conducting plate. The lithium battery is in contact with a first temperature sensor.

3. The new energy vehicle battery thermal management device according to claim 2, characterized in that, The liquid cooling heat exchange mechanism includes an inlet diverter fixedly connected to the battery box, an outlet diverter fixedly connected to the battery box, and multiple sets of serpentine heat exchange tubes connected together by the inlet diverter and the outlet diverter. The serpentine heat exchange tubes are movably connected to the protective shell and are in contact with the lithium battery.

4. The new energy vehicle battery thermal management device according to claim 1, characterized in that, The air conditioning distribution mechanism includes a distribution head fixedly connected to the battery box. The distribution head is connected to two sets of elastic sleeves. An air filter is fixedly connected to the distribution head. A reversing valve is fixedly installed at the air inlet end of the air filter. An exhaust pipe is fixedly connected to the reversing valve. A connector is fixedly connected to the reversing valve.

5. The new energy vehicle battery thermal management device according to claim 4, characterized in that, The air filter includes a housing fixedly installed between the splitter head and the reversing valve, with multiple sets of filter screens movably installed inside the housing, and a maintenance door movably connected to the housing.

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