Battery pack capable of improving heat dissipation effect on battery cell and aluminum plate

Abstract

The invention provides a battery pack capable of improving the heat dissipation effect on a battery cell and an aluminum plate, the battery pack comprises a communication mounting frame, a battery cell module, an upper water cooling plate and a lower water cooling plate, the battery cell module is mounted in the communication mounting frame, the upper water cooling plate is mounted at the top of the communication mounting frame, and the lower water cooling plate is mounted at the bottom of the communication mounting frame. The lower water cooling plate is installed at the bottom of the communication installation frame, cooling water outlets and cooling water inlets are formed in the upper water cooling plate and the lower water cooling plate correspondingly, and a conveying pipe can be connected between one cooling water outlet and one cooling water inlet. And the loops of the two water cooling plates are connected in series. According to the battery pack capable of improving the heat dissipation effect on the battery cell and the aluminum plate, provided by the invention, heat can be conducted more effectively by liquid cooling, the battery is kept in an optimal working temperature range, and the battery pack is uniform in temperature, high in power density and low in noise.

Description

Technical Field

[0001] The present invention relates to the field of battery packs, and in particular to a battery pack capable of improving the heat dissipation effect on battery cells and aluminum plates. Background Art

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

[0003] Current battery packs consist of a mounting frame and multiple battery cell modules. When the battery pack consisting of multiple battery cell modules is in use, a large amount of heat will appear inside the battery pack, and the battery pack needs to be cooled.

[0004] However, the traditional water-cooling plate design is usually located below the battery pack, and the heat is transferred to the water-cooling 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 will greatly affect the life and safety of the battery cell.

[0005] Therefore, it is necessary to provide a battery pack that improves the heat dissipation effect of the battery cell and the aluminum plate to solve the above technical problems. Summary of the invention

[0006] The present invention provides a battery pack with improved heat dissipation effect on battery cells and aluminum plates, which solves the problem that a traditional water-cooling plate design is usually placed below the battery pack and conducts heat to the water-cooling plate through the bottom of the battery cell. This method has low cooling efficiency and a large temperature difference between the bottom and the top of the battery cell, which greatly affects the life and safety of the battery cell.

[0007] In order to solve the above technical problems, the present invention provides a battery pack that improves the heat dissipation effect of the battery cell and the aluminum plate, comprising:

[0008] A connecting installation frame, a battery module, an upper water-cooling plate and a lower water-cooling plate, wherein the battery module is installed inside the connecting installation frame, the upper water-cooling plate is installed on the top of the connecting installation frame, and the lower water-cooling plate is installed on the bottom of the connecting installation frame;

[0009] The upper water-cooled plate and the lower cooling plate are respectively provided with a cooling water outlet and a cooling water inlet, and a delivery pipe can be 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; the circuits of the upper and lower water-cooled plates can also be connected in parallel, that is, the water inlet and outlet are directly connected to the main circuit of the water-cooled pipe.

[0010] Preferably, communication plugs are symmetrically installed at upper and lower positions on one side of the surface of the connecting installation frame, and the two communication plugs are connected to the battery management system in the battery pack through connecting lines.

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

[0012] Preferably, a bottom support is installed below the lower water-cooling plate by bolts.

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

[0014] Preferably, a protective component is provided on the surface of the upper water-cooling plate, and the protective component 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 arranged on 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 assembly is arranged between the connecting mounting frame and the upper water-cooling plate and the lower water-cooling plate, and the fixing assembly includes two rectangular mounting frames, two rectangular sealing frames, a fixing rod, two mounting sleeves, two connecting frames, two bolts and a positioning seat, and the two rectangular mounting frames are respectively installed on the sides of the upper water-cooling plate and the lower water-cooling 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 mounted on the surface of the fixing rod, the two connecting frames are connected to the surface of the two mounting sleeves, and one end of the two connecting frames is respectively connected to one side of the upper water-cooling plate and the lower water-cooling plate.

[0018] Preferably, the two bolts are respectively arranged 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 the related art, the battery pack provided by the present invention for improving the heat dissipation effect of the battery cell and the aluminum plate has the following beneficial effects:

[0020] The present invention provides a battery pack that improves the heat dissipation effect of battery cells and aluminum plates. An upper water cooling plate with two cooling water outlets and a lower cooling plate with two cooling water inlets are respectively arranged at the top and bottom of a connecting mounting frame with a battery cell module, and are used in conjunction with a delivery pipe, so that liquid cooling can conduct heat more effectively and keep the battery within an optimal operating temperature range.

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

[0022] Extended life: By controlling temperature, liquid cooling helps extend the life of the battery;

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

[0024] Low noise: Liquid cooling generally runs quieter than air cooling systems like fans. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0026] Figure 2 for Figure 1 The three-dimensional structure schematic diagram of the battery pack shown in the first perspective;

[0027] Figure 3 for Figure 2 An enlarged schematic diagram of part A is shown;

[0028] Figure 4 for Figure 2 An enlarged schematic diagram of part B is shown;

[0029] Figure 5 for Figure 1 A schematic diagram of the three-dimensional structure of the battery pack shown in the second viewing angle;

[0030] Figure 6 for Figure 5 An enlarged schematic diagram of part C is shown;

[0031] Figure 7 for Figure 1 A schematic diagram of the three-dimensional structure of the battery pack shown in the third viewing angle;

[0032] Figure 8 for Figure 1 A schematic diagram of the three-dimensional structure of the battery pack shown in the fourth viewing angle;

[0033] Fig. 9 A schematic structural diagram of a second embodiment of a battery pack for improving heat dissipation of battery cells and aluminum plates provided by the present invention;

[0034] Fig.10 for Fig. 9 An enlarged schematic diagram of the D portion shown;

[0035] Fig.11 A schematic structural diagram of a third embodiment of a battery pack for improving heat dissipation of battery cells and aluminum plates provided by the present invention;

[0036] Fig.12 for Fig.11 An enlarged schematic diagram of part E is shown.

[0037] Numbers in the figure: 1. Connecting installation frame; 2. 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 plug; 10. Power plug; 11. Explosion-proof pressure relief valve;

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

[0039] 13. Fixing assembly; 131. Rectangular mounting frame; 132. Rectangular sealing frame; 133. Fixing rod; 134. Mounting sleeve; 135. Connecting frame; 136. Bolt; 137. Positioning seat. DETAILED DESCRIPTION

[0040] The present invention will be further described below in conjunction with the accompanying drawings and implementation modes.

[0041] First embodiment

[0042] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8 ,in, Figure 1 A schematic structural diagram of a first embodiment of a battery pack for improving heat dissipation of battery cells and aluminum plates provided by the present invention; Figure 2 for Figure 1 The three-dimensional structure schematic diagram of the battery pack shown in the first perspective; Figure 3 for Figure 2 An enlarged schematic diagram of part A is shown; Figure 4 for Figure 2 An enlarged schematic diagram of part B is shown; Figure 5 for Figure 1 A schematic diagram of the three-dimensional structure of the battery pack shown in the second viewing angle; Figure 6 for Figure 5 An enlarged schematic diagram of part C is shown;

[0043] Figure 7 for Figure 1 A schematic diagram of the three-dimensional structure of the battery pack shown in the third viewing angle; Figure 8 for Figure 1 A battery pack for improving the heat dissipation effect of a battery cell and an aluminum plate, comprising:

[0044] A connecting installation frame 1, a battery module 2, an upper water-cooling plate 3 and a lower water-cooling plate 5, wherein the battery module 2 is installed inside the connecting installation frame 1, the upper water-cooling plate 3 is installed on the top of the connecting installation frame 1, and the lower water-cooling plate 5 is installed on the bottom of the connecting installation frame 1;

[0045] The upper water-cooled plate 3 and the lower cooling plate 5 are respectively provided with a cooling water outlet 4 and a cooling water inlet 6, and 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; the circuits of the upper and lower water-cooled plates can also be connected in parallel, that is, the water inlet 6 and the water outlet 4 are directly connected to the main circuit of the external water-cooled pipe.

[0046] Communication plugs 9 are symmetrically installed at upper and lower positions on one side of the surface of the connecting installation frame 1, and the two communication plugs 9 are connected to the battery management system in the battery pack through connecting lines.

[0047] A power plug 10 is installed on one side of the surface of the connecting mounting frame 1 and on the side opposite to the two communication plugs 9 , and the two power plugs 10 are connected to the battery module 2 via connecting wires.

[0048] A bottom support member 8 is installed below the lower water cooling plate 5 by means of bolts.

[0049] An explosion-proof pressure relief valve 11 is provided between the communication installation frame 1 and the battery core module 2 .

[0050] Water flows in from the cooling water inlet 6, flows through the flow channel of the lower water-cooled plate 5, and then reaches the upper water-cooled plate 3 from the connecting delivery pipe 7 between the upper water-cooled plate 3 and the lower water-cooled plate 5 on the right side, and flows out from the cooling water outlet 4 after flowing through the flow channel of the upper water-cooled plate 3. The upper water-cooled plate 3 and the lower water-cooled plate 5 may also be disconnected, and have their own independent cooling water outlet 4 and cooling water inlet 6. Both the cooling water outlet 4 and the cooling water inlet 6 may adopt a self-locking quick plug design, which is easy to connect. The quick plug automatically disconnects the water flow when plugging and unplugging to prevent cooling water leakage.

[0051] The upper water cooling plate in this design also serves as the battery pack cover, simplifying the battery pack design.

[0052] The upper water-cooling plate 3 and the lower water-cooling plate 5 serve as the upper cover and lower base of the battery pack, with a simple and compact design. The two water-cooling plates are fastened to the box body with sealing strips and screws to ensure the IP67 waterproof performance of the entire box body, which is very necessary for ship applications.

[0053] The upper water-cooling plate 3 and the lower water-cooling plate 5 respectively dissipate heat for the bottom of the battery cell and the aluminum plate, making the heat dissipation more efficient. Flow channels are evenly distributed in the upper water-cooling plate 3 and the lower water-cooling plate 5. Considering the large number of battery cells inside the battery pack, the weight may be hundreds of kilograms. If the bottom relies solely on the water-cooling plate, it will be deformed, so a bottom support plate is added.

[0054] The shape of the flow channel is S-shaped. The optimized design of the flow channel is conducive to uniform heat dissipation between the cells, ensuring the temperature consistency between multiple cells, thereby improving the efficiency and life of the battery system. The bottom support plate is installed on the surface of the water cooling plate to play a supporting role.

[0055] The working principle of a battery pack for improving the heat dissipation effect of the battery core and the aluminum plate provided by the present invention is as follows:

[0056] During use, when cooling the inside of the connected installation frame 1 with the battery module 2, first connect the cooling liquid pipeline of the external device to one of the cooling water inlets 6 on the surface of the lower cooling plate 5, and then transport the cooling liquid to the inside of the lower cooling plate 5 through the cooling water inlet 6. After the cooling liquid is transported to the inside of the lower cooling plate 5, it is transported to the inside 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, and then transported 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 water inlets 6 and outlets 4 of the two water-cooled plates are directly connected to the main circuit of the water-cooled pipe of the external device.

[0057] Compared with the related art, the battery pack provided by the present invention for improving the heat dissipation effect of the battery cell and the aluminum plate has the following beneficial effects:

[0058] The present invention provides a battery pack that improves the heat dissipation effect of battery cells and aluminum plates. An upper water cooling plate 3 with two cooling water outlets 4 and a lower cooling plate 5 with two cooling water inlets 6 are respectively arranged on the top and bottom of a connected installation frame 1 with a battery cell module 2, and are used in conjunction with a delivery pipe 7, so that liquid cooling can conduct heat more effectively and keep the battery within an optimal operating temperature range;

[0059] Temperature uniformity: Liquid cooling systems can provide more uniform temperature distribution, reducing the risk of local overheating;

[0060] Extended life: By controlling temperature, liquid cooling helps extend the life of the battery;

[0061] High power density: Liquid cooling can support higher power output and is suitable for high-performance applications;

[0062] Low noise: Liquid cooling generally runs quieter than air cooling systems like fans.

[0063] Second embodiment

[0064] Please refer to Fig. 9 and Fig.10 Based on the first embodiment of the present application, a battery pack that improves the heat dissipation effect of the battery cell and the aluminum plate is provided. The second embodiment of the present application proposes another battery pack that improves the heat dissipation effect of the battery cell and the aluminum plate. The second embodiment is only a preferred method of the first embodiment, and the implementation of the second embodiment will not affect the independent implementation of the first embodiment.

[0065] Specifically, the second embodiment of the present application provides a battery pack that improves the heat dissipation effect on battery cells and aluminum plates. The difference is that, in a battery pack that improves the heat dissipation effect on battery cells and aluminum plates, a protective component 12 is provided on the surface of the upper water cooling plate 3, and 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 the four mounting sleeves 123 are respectively connected to the surface of the connecting mounting frame 1.

[0066] The protective cover 121 is sleeved on the surface of the upper water-cooling 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 on the surface of the upper water-cooling plate 3 .

[0067] The four threaded sleeves 124 are threadedly connected to the surfaces of the four L-shaped threaded rods 122 .

[0068] The working principle of a battery pack for improving the heat dissipation effect of the battery core and the aluminum plate provided by the present invention is as follows:

[0069] When in use, when protecting the upper water cooling plate 3, first, the protective cover 121 with four L-shaped threaded rods 122 is installed inside the four installation sleeves 123 connected to the surface of the installation frame 1, and finally four threaded sleeves 124 are used to threadably connect with the four L-shaped threaded rods 122 respectively.

[0070] Compared with the related art, the battery pack provided by the present invention for improving the heat dissipation effect of the battery cell and the aluminum plate has the following beneficial effects:

[0071] The present invention provides a battery pack that improves the heat dissipation effect of battery cells and aluminum plates. A protective cover 121, four L-shaped threaded rods 122, four mounting sleeves 123 and four threaded sleeves 124 are arranged on the surface of an upper water-cooling plate 3 to protect the upper water-cooling plate 3 exposed to the outside.

[0072] Third embodiment

[0073] Please refer to Fig.11 and Fig.12 Based on the first embodiment of the present application, a battery pack that improves the heat dissipation effect of the battery cell and the aluminum plate is provided. The third embodiment of the present application proposes another battery pack that improves the heat dissipation effect of the battery cell and the aluminum plate. The third embodiment is only a preferred method of the first embodiment, and the implementation of the third embodiment will not affect the independent implementation of the first embodiment.

[0074] Specifically, the difference of a battery pack for improving the heat dissipation effect of battery cells and aluminum plates provided in the third embodiment of the present application is that, in a battery pack for improving the heat dissipation effect of battery cells and aluminum plates, a fixing component 13 is arranged between the connecting mounting frame 1 and the upper water-cooling plate 3 and the lower water-cooling plate 5, and 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 frames 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-cooling plate 3 and the lower water-cooling 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.

[0075] The use of two rectangular sealing cover frames 131 and two rectangular sealing frames 132 facilitates the positioning and sealing of the upper water-cooling plate 3 and the lower water-cooling plate 5 when they are placed on the connecting installation frame 1. The use of the mounting sleeve 134 and the connecting frame 135 in conjunction with the fixing rod 133 facilitates the installation of the upper water-cooling plate 3 and the lower water-cooling plate 5 between the connecting installation frame 1. The use of two bolts 136 can fix the upper water-cooling plate 3 and the lower water-cooling plate 5 after they are installed on the connecting installation frame 1.

[0076] The two mounting sleeves 134 are sleeved on the surface of the fixing rod 133 , the two connecting frames 135 are connected to the surfaces of the two mounting sleeves 134 , and one end of the two connecting frames 135 is respectively connected to one side of the upper water-cooling plate 3 and the lower water-cooling plate 5 .

[0077] 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 .

[0078] The working principle of a battery pack for improving the heat dissipation effect of the battery core and the aluminum plate provided by the present invention is as follows:

[0079] During use, when installing the upper water-cooling plate 3 and the lower water-cooling plate 5 between the connecting mounting frame 1, firstly, the upper water-cooling plate 3 with the rectangular sealing frame 132 and the lower water-cooling plate 5 with the rectangular sealing frame 132 are respectively mounted on the top and bottom of the connecting mounting frame 1, and at the same time, the rectangular sealing frames 132 on the upper water-cooling plate 3 and the lower water-cooling plate 5 are connected to the two rectangular mounting frames 131 on the surface of the connecting mounting frame 1, and the connecting frames 135 with the mounting sleeves 134 on the surfaces of the upper water-cooling plate 3 and the lower water-cooling plate 5 are respectively mounted on both sides of the surface of the fixing rod 133. After the upper water-cooling plate 3 and the lower water-cooling plate 5 are installed, the bolts 136 are used to pass through the mounting sleeves 134 and connect them to the fixing rod 133.

[0080] Compared with the related art, the battery pack provided by the present invention for improving the heat dissipation effect of the battery cell and the aluminum plate has the following beneficial effects:

[0081] The present invention provides a battery pack with improved heat dissipation effect on battery cells and aluminum plates. Two rectangular mounting frames 131, two rectangular sealing frames 132, fixing rods 133, two mounting sleeves 134, two connecting frames 135, two bolts 136 and positioning seats 137 are arranged between a connecting mounting frame 1 with a battery cell module 2 and an upper water-cooling plate 3 and a lower water-cooling plate 5, so as to facilitate fixing the upper water-cooling plate 3 and the lower water-cooling plate 5 to the top and bottom of the connecting mounting frame 1 by means of sleeve sealing and limit fastening, thereby replacing the current fixing with multiple bolts.

[0082] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A battery pack that improves the heat dissipation effect of battery cells and aluminum plates, characterized in that: include: A connecting installation frame, a battery module, an upper water-cooling plate and a lower water-cooling plate, wherein the battery module is installed inside the connecting installation frame, the upper water-cooling plate is installed on the top of the connecting installation frame, and the lower water-cooling plate is installed on the bottom of the connecting installation frame; The upper water-cooled plate and the lower cooling plate are respectively provided with a cooling water outlet and a cooling water inlet, and a delivery pipe can be 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; the circuits of the upper and lower water-cooled plates can also be connected in parallel, that is, the water inlet and outlet are directly connected to the main circuit of the water-cooled pipe.

2. The battery pack for improving heat dissipation of battery cells and aluminum plates according to claim 1, characterized in that: Communication plugs are symmetrically installed at upper and lower positions on one side of the surface of the connecting installation frame, and the two communication plugs are connected to the battery management system through connecting wires.

3. The battery pack for improving heat dissipation of battery cells and aluminum plates according to claim 1, characterized in that: A power plug is installed on one side of the surface of the connecting mounting frame and on a side opposite to the two communication plugs. The two power plugs are connected to the battery module via connecting wires.

4. The battery pack for improving heat dissipation of battery cells and aluminum plates according to claim 1, characterized in that: A bottom support is installed below the lower water cooling plate by bolts.

5. The battery pack for improving heat dissipation of battery cells and aluminum plates according to claim 1, characterized in that: An explosion-proof pressure relief valve is arranged between the communication installation frame and the battery core module.

6. The battery pack for improving heat dissipation of battery cells and aluminum plates according to claim 1, characterized in that: A protective component is provided on the surface of the upper water-cooling plate, and the protective component 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 arranged on the surfaces 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 battery cells and aluminum plates 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 battery cells and aluminum plates according to claim 1, characterized in that: A fixing assembly is arranged between the connecting mounting frame and the upper water-cooling plate and the lower water-cooling plate, and the fixing assembly includes two rectangular mounting frames, two rectangular sealing frames, a fixing rod, two mounting sleeves, two connecting frames, two bolts and a positioning seat. The two rectangular mounting frames are respectively installed on the sides of the upper water-cooling plate and the lower water-cooling 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 battery cells and aluminum plates according to claim 8, characterized in that: The two installation sleeves are arranged on the surface of the fixing rod, the two connecting frames are connected to the surfaces of the two installation sleeves, and one end of the two connecting frames is respectively connected to one side of the upper water cooling plate and the lower water cooling plate.

10. The battery pack for improving heat dissipation of battery cells and aluminum plates according to claim 8, characterized in that: The two bolts are respectively arranged 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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