A battery pack that improves heat dissipation for battery cells and aluminum plates.

Abstract

This invention provides a battery pack for improving heat dissipation of the battery cells and aluminum plates, comprising: a connecting mounting frame, a battery cell module, an upper water-cooling plate, and a lower water-cooling plate. The battery cell module is installed inside the connecting mounting frame, the upper water-cooling plate is installed at the top of the connecting mounting frame, and the lower water-cooling plate is installed at the bottom of the connecting mounting frame. The upper and lower water-cooling plates are respectively provided with a cooling water outlet and a cooling water inlet. A delivery pipe can be connected between one of the cooling water outlets and one of the cooling water inlets, meaning the circuits of the two water-cooling plates are connected in series. This invention provides a battery pack for improving heat dissipation of the battery cells and aluminum plates. This device allows liquid cooling to more effectively conduct heat, maintaining the battery within its optimal operating temperature range, ensuring temperature uniformity, high power density, and low noise.

Description

Technical Field

[0001] This invention relates to the field of battery packs, and more particularly to a battery pack that improves heat dissipation for the battery cells and aluminum plates. Background Technology

[0002] A battery pack is a device that combines multiple battery cells together and is equipped with necessary protection circuits, management systems, and a housing.

[0003] Current battery packs consist of a mounting frame and multiple cell modules. When in use, a large amount of heat is generated inside the battery pack, which requires heat dissipation.

[0004] However, traditional water-cooled plate designs are usually located at the bottom of the battery pack, transferring heat to the water-cooled plate through the bottom of the battery cell. This method has low cooling efficiency and a large temperature difference between the bottom and top of the battery cell, which greatly affects the lifespan and safety of the battery cell.

[0005] Therefore, it is necessary to provide a battery pack that improves heat dissipation for the battery cells and aluminum plates to solve the above-mentioned technical problems. Summary of the Invention

[0006] This invention provides a battery pack that improves the heat dissipation of the battery cells and aluminum plates. It solves the problem that the traditional water-cooling plate design is usually located at the bottom of the battery pack, and heat is conducted to the water-cooling plate through the bottom of the battery cells. This method has low cooling efficiency and a large temperature difference between the bottom and top of the battery cells, which will greatly affect the lifespan and safety of the battery cells.

[0007] To solve the above-mentioned technical problems, the present invention provides a battery pack that improves heat dissipation for the battery cells and aluminum plates, comprising:

[0008] The assembly includes a connecting mounting frame, a battery cell module, an upper water-cooling plate, and a lower water-cooling plate. The battery cell module is installed inside the connecting mounting frame, the upper water-cooling plate is installed at the top of the connecting mounting frame, and the lower water-cooling plate is installed at the bottom of the connecting mounting frame.

[0009] The upper water-cooled plate and the lower water-cooled plate are respectively provided with a cooling water outlet and a cooling water inlet. A delivery pipe is connected between one of the cooling water outlets and one of the cooling water inlets, that is, the circuits of the two water-cooled plates are connected in series; or, the circuits of the upper and lower water-cooled plates are connected in parallel, that is, the inlet and outlet are directly connected to the main circuit of the water-cooling pipe.

[0010] Preferably, communication connectors are symmetrically installed at the top and bottom positions on one side of the surface of the connecting mounting frame, and the two communication connectors are connected to the battery management system inside the battery pack via connecting wires.

[0011] Preferably, a power connector is installed on one side of the surface of the connecting mounting frame and on the opposite side of the two communication connectors, and the two power connectors are connected to the battery cell module via a connecting wire.

[0012] Preferably, a bottom support is bolted to the bottom of the lower water-cooled plate.

[0013] Preferably, an explosion-proof pressure relief valve is provided between the connecting mounting frame and the battery cell module.

[0014] Preferably, the surface of the upper water-cooled plate is provided with a protective component, which includes a protective cover, four L-shaped threaded rods, four mounting sleeves and four threaded sleeves. The four L-shaped threaded rods are respectively connected to the left and right sides of both ends of the protective cover, the four mounting sleeves are fitted onto the surface of the four L-shaped threaded rods, and the four mounting sleeves are respectively connected to the surface of the connecting mounting frame.

[0015] Preferably, the four threaded sleeves are threadedly connected to the surfaces of the four L-shaped threaded rods.

[0016] Preferably, a fixing component is provided between the connecting mounting frame and the upper water-cooled plate and the lower water-cooled plate. The fixing component includes two rectangular mounting frames, two rectangular sealing frames, a fixing rod, two mounting sleeves, two connecting brackets, two bolts and a positioning seat. The two rectangular mounting frames are respectively installed on the sides of the upper water-cooled plate and the lower water-cooled plate, and the two rectangular sealing frames are symmetrically installed on the upper and lower sides of the surface of the connecting mounting frame.

[0017] Preferably, the two mounting sleeves are fitted onto the surface of the fixing rod, the two connecting brackets are connected to the surfaces of the two mounting sleeves, and one end of each of the two connecting brackets is connected to one side of the upper water-cooling plate and the lower water-cooling plate, respectively.

[0018] Preferably, the two bolts are respectively disposed between the two mounting sleeves and the fixing rod, and the positioning seat is installed at the center position of the surface of the fixing rod.

[0019] Compared with related technologies, the battery pack provided by this invention, which improves heat dissipation for the battery cells and aluminum plates, has the following beneficial effects:

[0020] This invention provides a battery pack that improves the heat dissipation of battery cells and aluminum plates. An upper water-cooled plate with two cooling water outlets and a lower water-cooled plate with two cooling water inlets are respectively set at the top and bottom of the connected mounting frame with battery cell modules, and used in conjunction with the delivery pipe. This allows the liquid cooling to conduct heat more effectively and keep the battery within the optimal operating temperature range.

[0021] Temperature uniformity: Liquid cooling systems can provide a more uniform temperature distribution, reducing the risk of localized overheating;

[0022] Extended lifespan: Liquid cooling helps extend battery lifespan by controlling temperature;

[0023] High power density: Liquid cooling can support higher power output, making it suitable for high-performance applications;

[0024] Low noise: Liquid cooling is generally quieter than air cooling systems such as fans. Attached Figure Description

[0025] Figure 1 A schematic diagram of the structure of a first embodiment of a battery pack for improving heat dissipation of the battery cell and aluminum plate provided by the present invention;

[0026] Figure 2 for Figure 1 The diagram shows a three-dimensional structure of the battery pack from a first-person perspective.

[0027] Figure 3 for Figure 2 The enlarged schematic diagram of part A shown below;

[0028] Figure 4 for Figure 2 The enlarged schematic diagram of section B is shown below;

[0029] Figure 5 for Figure 1 The diagram shows a three-dimensional structure of the battery pack from a second perspective.

[0030] Figure 6 for Figure 5 The enlarged schematic diagram of section C is shown below;

[0031] Figure 7 for Figure 1 The diagram shows a three-dimensional structure of the battery pack from a third-person perspective;

[0032] Figure 8 for Figure 1 The diagram shows a four-dimensional structure of the battery pack from a fourth-view perspective.

[0033] Figure 9 This is a schematic diagram of a second embodiment of a battery pack that improves heat dissipation for the battery cells and aluminum plates, provided by the present invention.

[0034] Figure 10 for Figure 9 The enlarged schematic diagram of part D is shown below;

[0035] Figure 11 This is a schematic diagram of a third embodiment of a battery pack for improving heat dissipation of the battery cells and aluminum plates, provided by the present invention.

[0036] Figure 12 for Figure 11 The enlarged schematic diagram of part E is shown.

[0037] The following are the labels in the diagram: 1. Connecting mounting frame; 2. Battery cell module; 3. Upper water-cooling plate; 4. Cooling water outlet; 5. Lower water-cooling plate; 6. Cooling water inlet; 7. Delivery pipe; 8. Bottom support; 9. Communication connector; 10. Power connector; 11. Explosion-proof pressure relief valve.

[0038] 12. Protective components; 121. Protective cover; 122. L-shaped threaded rod; 123. Mounting sleeve; 124. Threaded sleeve;

[0039] 13. Fixing component; 131. Rectangular mounting frame; 132. Rectangular sealing frame; 133. Fixing rod; 134. Mounting sleeve; 135. Connecting bracket; 136. Bolt; 137. Positioning seat. Detailed Implementation

[0040] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0041] First Embodiment

[0042] Please refer to the following: Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8 ,in, Figure 1 A schematic diagram of the structure of a first embodiment of a battery pack for improving heat dissipation of the battery cell and aluminum plate provided by the present invention; Figure 2 for Figure 1 The diagram shows a three-dimensional structure of the battery pack from a first-person perspective. Figure 3 for Figure 2 The enlarged schematic diagram of part A shown below; Figure 4 for Figure 2 The enlarged schematic diagram of section B is shown below; Figure 5 for Figure 1 The diagram shows a three-dimensional structure of the battery pack from a second perspective. Figure 6 for Figure 5 The enlarged schematic diagram of section C is shown below; Figure 7 for Figure 1 The diagram shows a three-dimensional structure of the battery pack from a third-person perspective; Figure 8 for Figure 1 The diagram shows a fourth-view perspective of the battery pack's three-dimensional structure. A battery pack designed to improve heat dissipation for the battery cells and aluminum plates includes:

[0043] The assembly includes a connecting frame 1, a battery cell module 2, an upper water-cooling plate 3, and a lower water-cooling plate 5. The battery cell module 2 is installed inside the connecting frame 1, the upper water-cooling plate 3 is installed at the top of the connecting frame 1, and the lower water-cooling plate 5 is installed at the bottom of the connecting frame 1.

[0044] The upper water-cooled plate 3 and the lower water-cooled plate 5 are respectively provided with a cooling water outlet 4 and a cooling water inlet 6. A delivery pipe 7 is connected between one of the cooling water outlets 4 and one of the cooling water inlets 6, that is, the circuits of the two water-cooled plates are connected in series; or, the circuits of the upper and lower water-cooled plates are connected in parallel, that is, the cooling water inlet 6 and the cooling water outlet 4 are directly connected to the main circuit of the external water-cooling pipe.

[0045] Communication connectors 9 are symmetrically installed at the top and bottom positions on one side of the surface of the connecting mounting frame 1. The two communication connectors 9 are connected to the battery management system inside the battery pack through a connecting cable.

[0046] A power connector 10 is installed on one side of the surface of the connecting mounting frame 1 and on the opposite side of the two communication connectors 9. The two power connectors 10 are connected to the battery cell module 2 via connecting wires.

[0047] A bottom support 8 is bolted to the bottom of the lower water-cooled plate 5.

[0048] An explosion-proof pressure relief valve 11 is provided between the connecting mounting frame 1 and the battery cell module 2.

[0049] Water enters through the cooling water inlet 6, flows through the flow channel of the lower water-cooled plate 5, and then flows through the connecting pipe 7 between the upper and lower water-cooled plates 3 and 5 to the upper water-cooled plate 3. After flowing through the flow channel of the upper water-cooled plate 3, it exits through the cooling water outlet 4. Alternatively, the upper and lower water-cooled plates 3 and 5 can be unconnected, each having its own independent cooling water outlet 4 and cooling water inlet 6. Both the cooling water outlet 4 and the cooling water inlet 6 can adopt a self-locking quick-connect design for easy connection. The quick-connect automatically disconnects the water flow when plugged in or unplugged to prevent cooling water leakage.

[0050] In this design, the upper water-cooling plate also serves as the battery pack cover, simplifying the battery pack design.

[0051] The upper water-cooled plate 3 and the lower water-cooled plate 5 serve as the upper cover and lower base plate of the battery pack. The design is simple and compact. These two water-cooled plates are fastened to the enclosure with sealing strips and screws to ensure the entire enclosure has an IP67 waterproof rating, which is essential for marine applications.

[0052] The upper water-cooling plate 3 and the lower water-cooling plate 5 respectively dissipate heat from the bottom of the battery cell and the aluminum plate, making heat dissipation more efficient. The upper water-cooling plate 3 and the lower water-cooling plate 5 are evenly distributed with flow channels. Considering that there are many battery cells inside the battery pack and the weight may be hundreds of kilograms, the bottom would deform if it relied solely on the water-cooling plate, so a bottom support plate was added.

[0053] The flow channels are S-shaped, and their optimized design facilitates uniform heat dissipation between cells, ensuring temperature consistency across multiple cells and thus improving the efficiency and lifespan of the battery system. The bottom support plate is mounted on the surface of the water-cooling plate to provide support.

[0054] The working principle of a battery pack that improves heat dissipation for the battery cells and aluminum plates provided by this invention is as follows:

[0055] In use, when cooling the interior of the connected mounting frame 1 containing the battery module 2, first connect the coolant pipe of the external device to one of the cooling water inlets 6 on the surface of the lower water-cooled plate 5. Then, the coolant is delivered to the interior of the lower water-cooled plate 5 through the cooling water inlet 6. After the coolant is delivered to the interior of the lower water-cooled plate 5, it is then delivered to the interior of the upper water-cooled plate 3 through another cooling water inlet 6, a delivery pipe 7, and one of the cooling water outlets 4 on the upper water-cooled plate 3. Finally, it is delivered to the external device through another cooling water outlet 4 on the upper water-cooled plate 3 for circulating cooling. The circuits of the upper and lower water-cooled plates can also be connected in parallel, that is, the inlets 6 and outlets 4 of the two water-cooled plates are directly connected to the main circuit of the external device's water-cooling pipe.

[0056] Compared with related technologies, the battery pack provided by this invention, which improves heat dissipation for the battery cells and aluminum plates, has the following beneficial effects:

[0057] The present invention provides a battery pack that improves the heat dissipation effect of battery cells and aluminum plates. An upper water-cooled plate 3 with two cooling water outlets 4 and a lower water-cooled plate 5 with two cooling water inlets 6 are respectively provided at the top and bottom of the connecting mounting frame 1 with battery cell module 2, and are used in conjunction with the delivery pipe 7. This allows the liquid cooling to conduct heat more effectively and keep the battery within the optimal operating temperature range.

[0058] Temperature uniformity: Liquid cooling systems can provide a more uniform temperature distribution, reducing the risk of localized overheating;

[0059] Extended lifespan: Liquid cooling helps extend battery lifespan by controlling temperature;

[0060] High power density: Liquid cooling can support higher power output, making it suitable for high-performance applications;

[0061] Low noise: Liquid cooling is generally quieter than air cooling systems such as fans.

[0062] Second Embodiment

[0063] Please refer to the following: Figure 9 and Figure 10 Based on the battery pack with improved heat dissipation for the battery cells and aluminum plate provided in the first embodiment of this application, the second embodiment of this application proposes another battery pack with improved heat dissipation for the battery cells and aluminum plate. The second embodiment is merely a preferred embodiment of the first embodiment, and the implementation of the second embodiment will not affect the separate implementation of the first embodiment.

[0064] Specifically, the second embodiment of this application provides a battery pack that improves the heat dissipation effect on the battery cell and aluminum plate. The difference lies in that the surface of the upper water-cooling plate 3 is provided with a protective component 12. The protective component 12 includes a protective cover 121, four L-shaped threaded rods 122, four mounting sleeves 123 and four threaded sleeves 124. The four L-shaped threaded rods 122 are respectively connected to the left and right sides of both ends of the protective cover 121. The four mounting sleeves 123 are sleeved on the surface of the four L-shaped threaded rods 122 and are respectively connected to the surface of the communicating mounting frame 1.

[0065] The protective cover 121 is fitted onto the surface of the upper water-cooled plate 3. The use of the L-shaped threaded rod 122, the mounting sleeve 123 and the threaded sleeve 124 facilitates the installation of the protective cover 121 onto the surface of the upper water-cooled plate 3.

[0066] The four threaded sleeves 124 are threadedly connected to the surfaces of the four L-shaped threaded rods 122.

[0067] The working principle of a battery pack that improves heat dissipation for the battery cells and aluminum plates provided by this invention is as follows:

[0068] When using it to protect the upper water-cooled plate 3, first, put the protective cover 121 with four L-shaped threaded rods 122 inside the four mounting sleeves 123 on the surface of the connecting mounting frame 1, and finally use four threaded sleeves 124 to thread them onto the four L-shaped threaded rods 122 respectively.

[0069] Compared with related technologies, the battery pack provided by this invention, which improves heat dissipation for the battery cells and aluminum plates, has the following beneficial effects:

[0070] The present invention provides a battery pack that improves the heat dissipation effect of the battery cell and aluminum plate. The protective cover 121, four L-shaped threaded rods 122, four mounting sleeves 123 and four threaded sleeves 124 are provided on the surface of the upper water-cooling plate 3 to protect the exposed upper water-cooling plate 3.

[0071] Third Embodiment

[0072] Please refer to the following: Figure 11 and Figure 12 Based on the battery pack with improved heat dissipation for the battery cells and aluminum plate provided in the first embodiment of this application, the third embodiment of this application proposes another battery pack with improved heat dissipation for the battery cells and aluminum plate. The third embodiment is merely a preferred embodiment of the first embodiment, and the implementation of the third embodiment will not affect the separate implementation of the first embodiment.

[0073] Specifically, the third embodiment of this application provides a battery pack that improves the heat dissipation effect on the battery cells and aluminum plates. The difference lies in that, in a battery pack that improves the heat dissipation effect on the battery cells and aluminum plates, a fixing component 13 is provided between the connecting mounting frame 1 and the upper water-cooled plate 3 and the lower water-cooled plate 5. The fixing component 13 includes two rectangular mounting frames 131, two rectangular sealing frames 132, a fixing rod 133, two mounting sleeves 134, two connecting brackets 135, two bolts 136, and a positioning seat 137. The two rectangular mounting frames 131 are respectively installed on the sides of the upper water-cooled plate 3 and the lower water-cooled plate 5, and the two rectangular sealing frames 132 are symmetrically installed on the upper and lower sides of the surface of the connecting mounting frame 1.

[0074] The use of two rectangular mounting frames 131 and two rectangular sealing frames 132 facilitates the positioning and sealing of the upper water-cooled plate 3 and the lower water-cooled plate 5 when they are placed with the connecting mounting frame 1. The use of mounting sleeve 134 and connecting bracket 135 in conjunction with fixing rod 133 facilitates the installation of the upper water-cooled plate 3 and the lower water-cooled plate 5 with the connecting mounting frame 1. The use of two bolts 136 can fix the upper water-cooled plate 3 and the lower water-cooled plate 5 after they are installed with the connecting mounting frame 1.

[0075] Two mounting sleeves 134 are fitted onto the surface of the fixing rod 133, and two connecting brackets 135 are connected to the surfaces of the two mounting sleeves 134. One end of each connecting bracket 135 is connected to one side of the upper water-cooled plate 3 and the lower water-cooled plate 5, respectively.

[0076] The two bolts 136 are respectively disposed between the two mounting sleeves 134 and the fixing rod 133, and the positioning seat 137 is installed at the center position of the surface of the fixing rod 133.

[0077] The working principle of a battery pack that improves heat dissipation for the battery cells and aluminum plates provided by this invention is as follows:

[0078] In use, when installing the upper water-cooled plate 3 and the lower water-cooled plate 5 with the connecting mounting frame 1, first, the upper water-cooled plate 3 with the rectangular sealing frame 132 and the lower water-cooled plate 5 with the rectangular sealing frame 132 are respectively fitted onto the top and bottom of the connecting mounting frame 1. At the same time, the rectangular sealing frames 132 on the upper water-cooled plate 3 and the lower water-cooled plate 5 are connected to the two rectangular mounting frames 131 on the surface of the connecting mounting frame 1. The connecting brackets 135 with mounting sleeves 134 on the surface of the upper water-cooled plate 3 and the lower water-cooled plate 5 are respectively fitted onto both sides of the surface of the fixing rod 133. After the upper water-cooled plate 3 and the lower water-cooled plate 5 are installed, the bolts 136 are passed through the mounting sleeves 134 and connected to the fixing rod 133.

[0079] Compared with related technologies, the battery pack provided by this invention, which improves heat dissipation for the battery cells and aluminum plates, has the following beneficial effects:

[0080] This invention provides a battery pack that improves the heat dissipation effect on the battery cells and aluminum plates. Two rectangular mounting frames 131, two rectangular sealing frames 132, a fixing rod 133, two mounting sleeves 134, two connecting brackets 135, two bolts 136, and a positioning seat 137 are provided between the connecting mounting frame 1 with the battery cell module 2 and the upper water-cooled plate 3 and the lower water-cooled plate 5, so as to fix the upper water-cooled plate 3 and the lower water-cooled plate 5 to the top and bottom of the connecting mounting frame 1 by means of sleeve sealing and limiting fastening, thereby replacing the current fixation with multiple bolts.

[0081] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A battery pack that improves heat dissipation for the battery cells and aluminum plates, characterized in that, include: The assembly includes a connecting mounting frame, a battery cell module, an upper water-cooling plate, and a lower water-cooling plate. The battery cell module is installed inside the connecting mounting frame, the upper water-cooling plate is installed at the top of the connecting mounting frame, and the lower water-cooling plate is installed at the bottom of the connecting mounting frame. The upper water-cooled plate and the lower water-cooled plate are respectively provided with a cooling water outlet and a cooling water inlet. A delivery pipe is connected between one of the cooling water outlets and one of the cooling water inlets, that is, the circuits of the two water-cooled plates are connected in series; or, the circuits of the upper and lower water-cooled plates are connected in parallel, that is, the inlet and outlet are directly connected to the main circuit of the water-cooling pipe. When protecting the upper water-cooled plate, first, put the protective cover with four L-shaped threaded rods inside the four mounting sleeves that connect to the surface of the mounting frame, and finally use the four threaded sleeves to connect to the four L-shaped threaded rods respectively. When installing the upper and lower water-cooled plates with the connecting mounting frame, first, place the upper and lower water-cooled plates with rectangular sealing frames onto the top and bottom of the connecting mounting frame, respectively. At the same time, the rectangular sealing frames on the upper and lower water-cooled plates are connected to the two rectangular mounting frames on the surface of the connecting mounting frame. The connecting brackets with mounting sleeves on the surfaces of the upper and lower water-cooled plates are respectively fitted onto both sides of the surface of the fixing rod. After the upper and lower water-cooled plates are installed, bolts are passed through the mounting sleeves and connected to the fixing rod.

2. The battery pack for improving heat dissipation of the battery cell and aluminum plate according to claim 1, characterized in that, Communication connectors are symmetrically installed at the top and bottom positions on one side of the surface of the connecting mounting frame, and the two communication connectors are connected to the battery management system via connecting cables.

3. The battery pack for improving heat dissipation of the battery cell and aluminum plate according to claim 2, characterized in that, A power connector is installed on one side of the surface of the connecting mounting frame and on the side opposite to the two communication connectors. The two power connectors are connected to the battery cell module via connecting wires.

4. The battery pack for improving heat dissipation of the battery cell and aluminum plate according to claim 1, characterized in that, A bottom support is bolted to the bottom of the lower water-cooled plate.

5. The battery pack for improving heat dissipation of the battery cell and aluminum plate according to claim 1, characterized in that, An explosion-proof pressure relief valve is provided between the connecting mounting frame and the battery cell module.

6. The battery pack for improving heat dissipation of the battery cell and aluminum plate according to claim 1, characterized in that, The surface of the upper water-cooled plate is provided with a protective component, which includes a protective cover, four L-shaped threaded rods, four mounting sleeves and four threaded sleeves. The four L-shaped threaded rods are respectively connected to the left and right sides of both ends of the protective cover, the four mounting sleeves are fitted onto the surface of the four L-shaped threaded rods, and the four mounting sleeves are respectively connected to the surface of the connecting mounting frame.

7. The battery pack for improving heat dissipation of the battery cell and aluminum plate according to claim 6, characterized in that, The four threaded sleeves are threadedly connected to the surfaces of the four L-shaped threaded rods.

8. The battery pack for improving heat dissipation of the battery cell and aluminum plate according to claim 1, characterized in that, A fixing component is provided between the connecting mounting frame and the upper water-cooled plate and the lower water-cooled plate. The fixing component includes two rectangular mounting frames, two rectangular sealing frames, a fixing rod, two mounting sleeves, two connecting brackets, two bolts and a positioning seat. The two rectangular mounting frames are respectively installed on the sides of the upper water-cooled plate and the lower water-cooled plate, and the two rectangular sealing frames are symmetrically installed on the upper and lower sides of the surface of the connecting mounting frame.

9. The battery pack for improving heat dissipation of the battery cell and aluminum plate according to claim 8, characterized in that, Two mounting sleeves are fitted onto the surface of the fixing rod, and two connecting brackets are connected to the surfaces of the two mounting sleeves. One end of each connecting bracket is connected to one side of the upper water-cooling plate and the lower water-cooling plate, respectively.

10. The battery pack for improving heat dissipation of the battery cell and aluminum plate according to claim 8, characterized in that, The two bolts are respectively disposed between the two mounting sleeves and the fixing rod, and the positioning seat is installed at the center position of the surface of the fixing rod.

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