An efficient heat dissipation system for new energy vehicle battery modules

Abstract

The present invention relates to the field of battery module heat dissipation equipment, and in particular to an efficient heat dissipation system for a new energy vehicle battery module, comprising: an inner shell, a chamber provided in the inner shell, an inner wall provided with a first temperature sensor for detecting the chamber temperature, a water cooling plate fixedly connected to the bottom end of the inner shell, a water inlet pipe and a water outlet pipe fixedly connected to the side wall of the water cooling plate, the water outlet pipe and the end of the water inlet pipe being connected to an external water pump; the present invention detects the temperature of each single battery by a second temperature sensor, and if the temperature detected by one or more of the second temperature sensors exceeds the temperature value detected by the first temperature sensor, a rotation drive assembly at a corresponding position is started by a control module, so that the fan blades at the corresponding position rotate, accelerating the circulation of air at the single battery at the corresponding position, achieving separate heat dissipation of the single battery with abnormal temperature, and facilitating keeping the temperatures of multiple single batteries consistent.

Description

Technical Field

[0001] The present invention relates to the field of battery module heat dissipation equipment, and in particular to a high-efficiency heat dissipation system for a new energy vehicle battery module. Background Art

[0002] New energy battery module heat dissipation refers to the use of specific methods and technologies to dissipate the heat generated by the new energy vehicle battery module during operation to ensure that the battery module operates within an appropriate temperature range, guaranteeing its safety, stability and performance, and extending its service life. The most common method is liquid cooling, which works by circulating the coolant pipes in the battery pack to achieve efficient removal of battery heat.

[0003] For example, patent publication number CN117977060B discloses a high-efficiency heat dissipation device for new energy vehicle batteries, relating to the technical field of heat dissipation for new energy batteries. The device comprises a battery pack placed within a battery box; a ventilation and heat dissipation unit comprising a plurality of ventilation and heat dissipation holes formed in the battery box housing; a liquid cooling unit comprising two corrugated liquid cooling tubes fixedly mounted within the battery box; and an air cooling unit comprising a sealing ring fixedly mounted between a partition plate and the battery box.

[0004] The above case has the following defects: Since the battery pack is composed of multiple single cells, after long-term use, the aging speed of different single cells in the battery pack is likely to vary (such as the number of cycles, charge and discharge depth), resulting in differences in the internal resistance and voltage between different single cells, which can easily lead to differences in the heat generation of multiple single cells, increasing the difficulty of heat dissipation of the battery module.

[0005] To this end, the present invention proposes an efficient heat dissipation system for a new energy vehicle battery module to solve the above problems. Summary of the Invention

[0006] To achieve the above objectives, the present invention adopts the following technical solution: an efficient heat dissipation system for a new energy vehicle battery module, comprising:

[0007] An inner shell, wherein a chamber is provided in the inner shell, and a first temperature sensor is provided on the inner wall for detecting the temperature of the chamber. A water cooling plate is fixedly connected to the bottom end of the inner shell, and a water inlet pipe and a water outlet pipe are fixedly connected to the side wall of the water cooling plate. The ends of the water outlet pipe and the water inlet pipe are connected to an external water pump;

[0008] A plurality of single cells are distributed in a rectangular array on a water-cooled plate, and a second temperature sensor is provided on the surface of each single cell for detecting the temperature of the single cell at a corresponding position;

[0009] A plurality of fan blades, wherein the fan blades are rotatably connected in the guide groove of the side wall of the inner shell in an array corresponding to the positions of the single cells;

[0010] A plurality of rotation drive assemblies, each of which is used to drive the fan blades at corresponding positions to rotate;

[0011] The control module starts the rotation drive assembly at the corresponding position based on the first temperature sensor and the second temperature sensor to perform directional air cooling on the single battery.

[0012] Specifically, in the prior art, since a battery pack is composed of multiple single cells, after long-term use, the aging rates of different single cells in the battery pack are likely to vary, such as due to differences in cycle number and charge / discharge depth. This results in differences in internal resistance and voltage between the different single cells, which in turn easily leads to differences in heat generation among the multiple single cells, increasing the difficulty of heat dissipation in the battery module. This technical solution can solve the above problem. The specific operation is as follows:

[0013] During the operation of the battery module, the external water pump is started to allow cooling water to enter the water-cooling plate through the water inlet pipe. The water-cooling plate cools down multiple single cells, and multiple temperature sensors are used to check the single cells at the corresponding positions.

[0014] If the temperature value detected by the first temperature sensor does not exceed a specified temperature threshold, such as 50 degrees, the temperature of each single battery is detected by the second temperature sensor. If the temperature detected by one or more of the second temperature sensors exceeds the temperature value detected by the first temperature sensor, the control module activates the rotary drive assembly at the corresponding position, causing the fan blade at the corresponding position to rotate, thereby accelerating the air circulation around the single battery at the corresponding position and improving the heat dissipation speed of the single battery;

[0015] If the temperature value detected by the first temperature sensor exceeds a specified temperature threshold, the control module starts all the rotation drive components in the inner shell, causing the multiple fan blades in the inner shell to rotate, promoting air flow in the inner shell and increasing the heat dissipation speed of the single battery.

[0016] Preferably, the rotary drive assembly comprises:

[0017] The housing is fixed to the side wall of the inner shell and is rotatably connected to the driving impeller via a sealed bearing;

[0018] Two connecting pipes, the two connecting pipes respectively connecting two sides of the shell with the water inlet pipe;

[0019] a first control valve, disposed in each communicating pipe;

[0020] A second control valve is provided in the water inlet pipe and located between the two connecting pipes;

[0021] A transmission assembly connecting the transmission impeller and the fan blades;

[0022] The control module opens the two first control valves at corresponding positions and closes the second control valve based on the first temperature sensor and the second temperature sensor, so that cooling water enters the housing and drives the transmission impeller to rotate.

[0023] Preferably, the transmission assembly includes:

[0024] a first bevel gear, wherein the first bevel gear is coaxially fixed with the impeller;

[0025] The second bevel gear is coaxially fixed with the fan blade and meshes with the first bevel gear.

[0026] Preferably, the first control valve and the second control valve are both ball valves, namely a first ball valve and a second ball valve, the first ball valve is rotatably connected to the connecting pipe, and the second ball valve is rotatably connected to the water inlet pipe;

[0027] The first ball valve and the second ball valve are opened and closed synchronously through a linkage control component.

[0028] Preferably, the linkage control component includes:

[0029] A drive motor, wherein the drive motor is fixed to the outer wall of the water inlet pipe, and an output shaft thereof is connected to the second ball valve shaft;

[0030] The synchronous pulley mechanism connects the second ball valve shaft with the two first ball valve shafts to achieve synchronous rotation.

[0031] Preferably, the synchronous pulley mechanism includes:

[0032] Two first pulleys, the two first pulleys are respectively fixedly connected to the surfaces of the two first ball valve shafts;

[0033] two second pulleys, the two second pulleys being fixedly connected to the shaft surface of the second ball valve;

[0034] A synchronous belt is connected between the first pulley and the second pulley.

[0035] Preferably, it also includes:

[0036] an outer shell, said outer shell enclosing the inner shell and being fixed by bolts;

[0037] a cover plate, the cover plate being fixed and sealed on the top of the housing by bolts;

[0038] Multiple heat sinks, each heat sink corresponding to a single battery, with its bottom surface in contact with the top of the single battery, and the top of each heat sink elastically connected to the bottom of the cover plate through a bellows;

[0039] The heat dissipation fins are vertically arranged on the top of the heat dissipation plate and are flush with the guide grooves.

[0040] Preferably, a serpentine pipeline is provided inside the water-cooling plate, and its water inlet and water outlet are connected to the water inlet pipe and the water outlet pipe respectively.

[0041] Preferably, the inner diameters of the serpentine pipeline, the water inlet pipe and the water outlet pipe are the same.

[0042] Preferably, it also includes:

[0043] A flow sensor is provided at the end of the water outlet pipe and is used to detect the flow rate of the cold water. The control module adjusts the speed of the water pump based on the flow information detected by the flow sensor.

[0044] Compared with the prior art, the present invention has the following beneficial effects:

[0045] 1. The present invention is provided with a first temperature sensor, a second temperature sensor, a fan blade, and a control module. The second temperature sensor detects the temperature of each single cell. If the temperature detected by one or more of the second temperature sensors exceeds the temperature value detected by the first temperature sensor, the control module activates the rotary drive assembly at the corresponding position, causing the fan blade at the corresponding position to rotate, accelerating the air circulation around the single cell at the corresponding position, achieving individual heat dissipation for the single cell with abnormal temperature, and facilitating consistent temperature maintenance of multiple single cells.

[0046] 2. The present invention increases the contact area between the heat dissipation surface of the single cell and the air by providing a heat dissipation plate and heat dissipation fins, thereby further improving the heat dissipation effect of the single cell. In addition, by providing a bellows, it ensures that the heat dissipation plate is in full contact with the single cell when the cover plate seals the top of the shell.

[0047] 3. The present invention detects the flow rate of cooling water through a flow sensor. If the flow rate is lower than a threshold, the water pump speed is adjusted through a control module, which helps to avoid abnormal fluctuations in the cooling water flow rate and ensure uniform heat dissipation in various areas of the water-cooled plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0049] Figure 2 Schematic diagram of the connection between the inner shell and the outer shell in the present invention;

[0050] Figure 3 Schematic diagram of the connection between the water inlet pipe and the housing in the present invention;

[0051] Figure 4 This is a schematic diagram of the connection between the water cooling plate and the water inlet pipe in the present invention;

[0052] Figure 5 A schematic diagram of the connection between the first bevel rack and the second bevel gear in the present invention;

[0053] Figure 6 This is a schematic diagram of the connection between the first ball valve and the second ball valve in the present invention;

[0054] Figure 7 Schematic diagram of the connection between the cover plate and the bellows in the present invention.

[0055] In the figure: inner shell 1, guide groove 2, fan blade 3, first temperature sensor 4, water cooling plate 5, serpentine pipe 501, water inlet pipe 6, water outlet pipe 7, single battery 8, second temperature sensor 9, shell 10, transmission impeller 11, connecting pipe 12, first bevel gear 13, second bevel gear 14, first ball valve 15, second ball valve 16, flow sensor 17, drive motor 18, first pulley 19, second pulley 20, synchronous belt 21, shell 22, cover plate 23, heat sink 24, bellows 25, heat sink fin 26. DETAILED DESCRIPTION

[0056] The following description is intended to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are merely examples, and those skilled in the art may conceive of other obvious variations.

[0057] like Figures 1 to 7 As shown, an efficient heat dissipation system for a new energy vehicle battery module includes:

[0058] An inner shell 1 is provided with a chamber, and a first temperature sensor 4 is provided on the inner wall for detecting the chamber temperature. A water-cooling plate 5 is fixedly connected to the bottom end of the inner shell 1, and a water inlet pipe 6 and a water outlet pipe 7 are fixedly connected to the side wall of the water-cooling plate 5. The ends of the water outlet pipe 7 and the water inlet pipe 6 are connected to an external water pump;

[0059] Several single cells 8 are distributed in a rectangular array on the water-cooled plate 5. A second temperature sensor 9 is provided on the surface of each single cell 8 to detect the temperature of the single cell 8 at the corresponding position;

[0060] A plurality of fan blades 3 are rotatably connected to the guide groove 2 on the side wall of the inner shell 1 in an array corresponding to the positions of the single batteries 8;

[0061] A plurality of rotation drive components, the rotation drive components are used to drive the fan blades 3 at corresponding positions to rotate;

[0062] A control module, which activates the rotation drive assembly at the corresponding position based on the first temperature sensor 4 and the second temperature sensor 9 to perform directional air cooling on the single battery 8;

[0063] Specifically, in the prior art, since a battery pack is composed of multiple single cells, after long-term use, the aging rates of different single cells in the battery pack are likely to vary, such as due to differences in cycle number and charge / discharge depth. This results in differences in internal resistance and voltage between the different single cells, which in turn easily leads to differences in heat generation among the multiple single cells, increasing the difficulty of heat dissipation in the battery module. This technical solution can solve the above problem. The specific operation is as follows:

[0064] During the operation of the battery module, the external water pump is started to allow cooling water to enter the water cooling plate 5 through the water inlet pipe 6, and the water cooling plate 5 cools the multiple single cells 8. At the same time, multiple temperature sensors are used to check the single cells 8 at corresponding positions.

[0065] If the temperature value detected by the first temperature sensor 4 does not exceed the specified temperature threshold, such as 50 degrees, the temperature of each single battery 8 is detected by the second temperature sensor 9. If the temperature detected by one or more of the second temperature sensors 9 exceeds the temperature value detected by the first temperature sensor 4, the control module starts the rotation drive assembly at the corresponding position, so that the fan blade 3 at the corresponding position rotates, accelerating the air circulation around the single battery 8 at the corresponding position and improving the heat dissipation speed of the single battery 8;

[0066] If the temperature value detected by the first temperature sensor 4 exceeds the specified temperature threshold, the control module starts all the rotating drive components in the inner shell 1, so that the several fan blades 3 in the inner shell 1 rotate, promote the air flow in the inner shell 1, and increase the heat dissipation speed of the single battery 8.

[0067] As a further embodiment of the present invention, the rotary drive assembly comprises:

[0068] The housing 10 is fixed to the side wall of the inner shell 1 and is rotatably connected to the driving impeller 11 via a sealed bearing;

[0069] Two connecting pipes 12, the two connecting pipes 12 are respectively connected to the two sides of the shell 10 and the water inlet pipe 6;

[0070] A first control valve is provided in each connecting pipe 12;

[0071] The second control valve is provided in the water inlet pipe 6 and is located between the two connecting pipes 12;

[0072] A transmission assembly, which connects the transmission impeller 11 and the fan blades 3;

[0073] The control module opens the two first control valves at corresponding positions and closes the second control valve based on the first temperature sensor 4 and the second temperature sensor 9, so that cooling water enters the housing 10 and drives the transmission impeller 11 to rotate;

[0074] The transmission components include:

[0075] A first bevel gear 13, the first bevel gear 13 is coaxially fixed with the impeller;

[0076] A second bevel gear 14 is coaxially fixed to the fan blade 3 and meshes with the first bevel gear 13;

[0077] Specifically, if the temperature value detected by the first temperature sensor 4 does not exceed a specified temperature threshold, such as 50 degrees, the temperature of each single battery 8 is detected by the second temperature sensor 9. If the temperature detected by one or more of the second temperature sensors 9 exceeds the temperature value detected by the first temperature sensor 4, the control module opens the two first control valves at the corresponding positions and closes the second control valve, allowing cooling water to enter the housing 10 to drive the transmission impeller 11 to rotate, causing the first bevel gear 13 to rotate, thereby causing the second bevel gear 14 to rotate, and the fan blades 3 at the corresponding positions to rotate, thereby accelerating the air circulation at the single battery 8 at the corresponding position and improving the heat dissipation speed of the single battery 8;

[0078] If the temperature value detected by the first temperature sensor 4 exceeds the specified temperature threshold, the control module closes all the second control valves and opens all the first control valves. Under the above principle, the several fan blades 3 in the inner shell 1 rotate, promoting the air flow of the inner shell 1 and increasing the heat dissipation speed of the single battery 8.

[0079] As a further embodiment of the present invention, the first control valve and the second control valve are both ball valves, namely a first ball valve 15 and a second ball valve 16, the first ball valve 15 is rotatably connected to the connecting pipe 12, the second ball valve 16 is rotatably connected to the water inlet pipe 6, and the second ball valve 16 is located between the two first ball valves 15;

[0080] The first ball valve 15 and the second ball valve 16 are opened and closed synchronously through a linkage control component;

[0081] The linkage control components include:

[0082] The driving motor 18 is fixed to the outer wall of the water inlet pipe 6, and its output shaft is connected to the shaft of the second ball valve 16;

[0083] A synchronous pulley mechanism connects the shaft of the second ball valve 16 to the shafts of the two first ball valves 15 to achieve synchronous rotation;

[0084] The synchronous pulley mechanism includes: two first pulleys 19, and the two first pulleys 19 are respectively fixedly connected to the shaft surfaces of the two first ball valves 15;

[0085] Two second pulleys 20, the two second pulleys 20 are fixedly connected to the shaft surface of the second ball valve 16; a synchronous belt 21 is connected between the first pulley 19 and the second pulley 20;

[0086] Specifically, by setting a drive motor 18 and a synchronous belt 21, when it is necessary to start the fan blade 3 at the corresponding position, the drive motor 18 at the corresponding position is started, so that the output shaft of the drive motor 18 rotates, so that the second ball valve 16 rotates ninety degrees, and the second ball valve 16 is closed. During the rotation of the output shaft of the drive motor 18, the two first ball valves 15 are rotated ninety degrees under the drive of the synchronous belt 21, so that the cooling water enters the housing 10 and drives the drive impeller 11 to rotate. Under the transmission action of the transmission assembly, the fan blade 3 rotates, thereby promoting the air flow of the inner housing 1 and improving the heat dissipation speed of the single battery 8.

[0087] As a further embodiment of the present invention, it also includes:

[0088] An outer shell 22, the outer shell 22 wraps around the inner shell 1 and is fixed by bolts;

[0089] The cover plate 23 is fixed and sealed on the top of the housing 22 by bolts;

[0090] Multiple heat sinks 24, each heat sink 24 corresponds to a single battery 8, and its bottom surface contacts the top of the single battery 8. The top of each heat sink 24 is elastically connected to the bottom of the cover plate 23 through a bellows 25;

[0091] The heat dissipation fins 26 are vertically arranged on the top of the heat dissipation plate 24 and are flush with the guide groove 2;

[0092] Specifically, by providing the heat dissipation plate 24 and the heat dissipation fins, the contact area between the heat dissipation surface of the single cell 8 and the air is increased, thereby further improving the heat dissipation effect on the single cell 8. In addition, by providing the bellows 25, the heat dissipation plate 24 is ensured to be in full contact with the single cell 8 during the process of the cover plate 23 sealing the top of the shell 22.

[0093] As a further implementation scheme of the present invention, a serpentine pipe 501 is provided inside the water-cooling plate 5, and its water inlet and water outlet are connected to the water inlet pipe 6 and the water outlet pipe 7 respectively; the serpentine pipe 501 covers the entire area of ​​the water-cooling plate 5, ensuring that the cooling water flows evenly through the bottom area of ​​each single cell 8, avoiding the problem of insufficient cooling at the edge of the water-cooling plate 5.

[0094] The inner diameters of the serpentine pipe 501, the water inlet pipe 6 and the water outlet pipe 7 are the same; this helps to keep the flow rate of the cooling water in the pipe, the water inlet pipe 6 and the water outlet pipe 7 consistent, avoiding excessively high or low local flow rates and ensuring uniform heat dissipation in each area of ​​the water-cooled plate 5.

[0095] Also includes:

[0096] Flow sensor 17, which is provided at the end of the water outlet pipe 7 and is used to detect the flow rate of the cold water. The control module adjusts the speed of the water pump based on the flow information detected by the flow sensor 17;

[0097] Specifically, when the cooling water drives the transmission impeller 11 to rotate, the resistance of the impeller can easily cause the cooling water flow rate to fluctuate or even reduce the circulation speed of the cooling water in the water-cooled plate 5. The flow rate of the cooling water is detected by the flow sensor 17. If the flow rate is lower than the threshold, the water pump speed is adjusted by the control module, which is helpful to avoid the problem of abnormal fluctuations in the cooling water flow rate and ensure uniform heat dissipation in various areas of the water-cooled plate 5.

[0098] The working principle of the present invention is as follows: during the operation of the battery module, the external water pump is started, so that cooling water enters the water cooling plate 5 through the water inlet pipe 6, and the water cooling plate 5 cools down the multiple single cells 8. At the same time, multiple temperature sensors are used to check the single cells 8 at corresponding positions.

[0099] If the temperature value detected by the first temperature sensor 4 does not exceed the specified temperature threshold, such as 50 degrees, the temperature of each single battery 8 is detected by the second temperature sensor 9. If the temperature detected by one or more of the second temperature sensors 9 exceeds the temperature value detected by the first temperature sensor 4, the control module starts the rotation drive assembly at the corresponding position, so that the fan blade 3 at the corresponding position rotates, accelerating the air circulation around the single battery 8 at the corresponding position and improving the heat dissipation speed of the single battery 8;

[0100] If the temperature value detected by the first temperature sensor 4 exceeds the specified temperature threshold, the control module starts all the rotating drive components in the inner shell 1, so that the several fan blades 3 in the inner shell 1 rotate, promote the air flow in the inner shell 1, and increase the heat dissipation speed of the single battery 8.

[0101] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions only describe the principles of the present invention. Various changes and improvements are possible without departing from the spirit and scope of the present invention, and such changes and improvements fall within the scope of the invention as claimed.

Claims

1. An efficient heat dissipation system for a new energy vehicle battery module, characterized in that: include: An inner shell (1) is provided with a chamber therein, and a first temperature sensor (4) is provided on the inner wall thereof for detecting the temperature of the chamber. A water cooling plate (5) is fixedly connected to the bottom end of the inner shell (1), and a water inlet pipe (6) and a water outlet pipe (7) are fixedly connected to the side wall of the water cooling plate (5). The ends of the water outlet pipe (7) and the water inlet pipe (6) are connected to an external water pump. A plurality of single cells (8) are distributed in a rectangular array on a water-cooled plate (5), and a second temperature sensor (9) is provided on the surface of each single cell (8) for detecting the temperature of the single cell (8) at a corresponding position; A plurality of fan blades (3), wherein the plurality of fan blades (3) are rotatably connected in a guide groove (2) on a side wall of the inner shell (1) in an array corresponding to positions of the single cells (8); A plurality of rotation drive assemblies, wherein the rotation drive assemblies are used to drive the fan blades (3) at corresponding positions to rotate; A control module activates a rotation drive assembly at a corresponding position based on a first temperature sensor (4) and a second temperature sensor (9) to perform directional air cooling and heat dissipation on the single battery (8).

2. The high-efficiency heat dissipation system for a new energy vehicle battery module according to claim 1, characterized in that: The rotary drive assembly comprises: A housing (10), wherein the housing (10) is fixed to the side wall of the inner shell (1) and is rotatably connected to a transmission impeller (11) via a sealed bearing; Two connecting pipes (12), the two connecting pipes (12) respectively connecting two sides of the shell (10) and the water inlet pipe (6); A first control valve is provided in each connecting pipe (12); a second control valve disposed in the water inlet pipe (6) and located between the two connecting pipes (12); A transmission assembly, wherein the transmission assembly connects the transmission impeller (11) and the fan blade (3); The control module opens two first control valves at corresponding positions and closes the second control valve based on the first temperature sensor (4) and the second temperature sensor (9), allowing cooling water to enter the housing (10) to drive the transmission impeller (11) to rotate.

3. The high-efficiency heat dissipation system for a new energy vehicle battery module according to claim 2, characterized in that: The transmission assembly comprises: a first bevel gear (13), wherein the first bevel gear (13) is coaxially fixed to the impeller; A second bevel gear (14), wherein the second bevel gear (14) is coaxially fixed with the fan blade (3), and the second bevel gear (14) is meshed with the first bevel gear (13).

4. The efficient heat dissipation system for a new energy vehicle battery module according to claim 2, characterized in that: The first control valve and the second control valve are both ball valves, namely a first ball valve (15) and a second ball valve (16). The first ball valve (15) is rotatably connected to the connecting pipe (12), and the second ball valve (16) is rotatably connected to the water inlet pipe (6). The first ball valve (15) and the second ball valve (16) are opened and closed synchronously through a linkage control component.

5. The high-efficiency heat dissipation system for a new energy vehicle battery module according to claim 4, characterized in that: The linkage control component includes: A drive motor (18), wherein the drive motor (18) is fixed to the outer wall of the water inlet pipe (6), and the output shaft thereof is connected to the shaft of the second ball valve (16); The synchronous pulley mechanism connects the shaft of the second ball valve (16) with the shafts of the two first ball valves (15) to achieve synchronous rotation.

6. The high-efficiency heat dissipation system for a new energy vehicle battery module according to claim 5, characterized in that: The synchronous pulley mechanism comprises: Two first pulleys (19), the two first pulleys (19) are respectively fixedly connected to the shaft surfaces of the two first ball valves (15); Two second pulleys (20), the two second pulleys (20) are fixedly connected to the shaft surface of the second ball valve (16); A synchronous belt (21) is connected between the first pulley (19) and the second pulley (20).

7. The high-efficiency heat dissipation system for a new energy vehicle battery module according to claim 1, characterized in that: Also includes: an outer shell (22), the outer shell (22) wrapping around the inner shell (1) and fixed by bolts; a cover plate (23), the cover plate (23) being fixed and sealed on the top of the housing (22) by bolts; A plurality of heat dissipation plates (24), each heat dissipation plate (24) corresponding to a single battery (8), the bottom surface of each heat dissipation plate (24) being in contact with the top of the single battery (8), and the top of each heat dissipation plate (24) being elastically connected to the bottom of the cover plate (23) via a bellows (25); The heat dissipation fins (26) are vertically arranged on the top of the heat dissipation plate (24) and are flush with the guide groove (2).

8. The high-efficiency heat dissipation system for a new energy vehicle battery module according to claim 1, characterized in that: A serpentine pipeline (501) is provided inside the water-cooling plate (5), and its water inlet and water outlet are connected to the water inlet pipe (6) and the water outlet pipe (7) respectively.

9. The high-efficiency heat dissipation system for a new energy vehicle battery module according to claim 8, characterized in that: The inner diameters of the serpentine pipeline (501), the water inlet pipe (6) and the water outlet pipe (7) are the same.

10. The high-efficiency heat dissipation system for a new energy vehicle battery module according to claim 9, characterized in that: Also includes: A flow sensor (17) is provided at the end of the water outlet pipe (7) and is used to detect the flow rate of the cold water. The control module adjusts the speed of the water pump based on the flow information detected by the flow sensor (17).

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