Liquid cooling energy storage battery structure

Abstract

The utility model belongs to the technical field of batteries, and particularly relates to a liquid cooling energy storage battery structure which comprises a shell and a battery module arranged in the shell, a liquid cooling plate is arranged on one side of the shell, a heat conduction pad is arranged between the liquid cooling plate and the battery module, an installation plate is arranged at one end of the shell, an installation groove is formed in the installation plate, and the installation groove is communicated with the liquid cooling plate. A control panel is arranged in the mounting groove and is electrically connected with the battery module. By arranging the heat conduction pad, the heat dissipation effect can be improved, the heat conduction pad can be directly detached during maintenance, the maintenance efficiency is improved, the heat conduction pad can be directly installed after maintenance, secondary attachment is not needed, the heat conduction pad can be repeatedly used, and the maintenance cost is reduced.

Description

Technical Field

[0001] This utility model belongs to the technical field of batteries, specifically relating to a liquid-cooled energy storage battery structure. Background Technology

[0002] In recent years, battery energy storage technology has become increasingly mature, boasting advantages such as large capacity, safety and reliability, low noise, strong environmental adaptability, and ease of installation, leading to its widespread application in the energy storage industry. However, the charging and discharging process of energy storage batteries is highly dependent on temperature; therefore, thermal management technology for energy storage batteries is crucial. Currently, the mainstream form of energy storage systems uses forced air cooling via fans to cool the battery cells, but this results in poor cooling uniformity, with the system temperature difference only controllable within 8°C. As usage time increases, system stability decreases, and battery cell lifespan is severely degraded.

[0003] To address the aforementioned issues, liquid cooling systems for energy storage are gaining increasing popularity. Compared to forced air cooling systems, liquid cooling systems can better control the overall temperature difference of the system. As the usage time increases, the system remains stable and controllable. In traditional liquid-cooled battery structures, heat conduction between the liquid cooling plate and the cell module is achieved through thermally conductive structural adhesive or thermally conductive gel. Thermally conductive structural adhesive and thermally conductive gel require automated adhesive application equipment. Furthermore, once the thermally conductive structural adhesive has cured, it is impossible to remove and replace the module for later maintenance, resulting in high maintenance costs. Maintenance of thermally conductive gel requires cleaning the adhesive and then applying it a second time, which is cumbersome.

[0004] Therefore, there is an urgent need to propose a new technical solution to address the above problems. Utility Model Content

[0005] The purpose of this utility model is to provide a liquid-cooled energy storage battery structure that addresses the shortcomings of existing technologies. This structure can be directly disassembled during maintenance, improving maintenance efficiency, and can be directly installed after maintenance without the need for secondary attachment. The thermal pad can be reused, reducing maintenance costs.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A liquid-cooled energy storage battery structure includes a housing and a battery module disposed inside the housing. A liquid cooling plate is disposed on one side of the housing, and a thermally conductive pad is disposed between the liquid cooling plate and the battery module. A mounting plate is disposed at one end of the housing, and a mounting groove is disposed on the mounting plate. A control board is disposed in the mounting groove, and the control board is electrically connected to the battery module.

[0008] Preferably, a receiving cavity is formed between the housing and the liquid cooling plate, the battery module is disposed in the receiving cavity, and a first sealing ring is provided between the liquid cooling plate and the housing, the first sealing ring being disposed around the connection between the liquid cooling plate and the housing.

[0009] Preferably, the opening of the housing extends outward to form a connector, a pressure strip is provided on one side of the connector, the connector is disposed between the pressure strip and the liquid cooling plate, and the pressure strip, the connector, the first sealing ring, the thermal pad and the liquid cooling plate are connected by a fastener.

[0010] Preferably, the outer sides of the connector and the housing form an L-shaped structure, the pressure strip is an L-shaped structure, and the side portions of the pressure strip abut against the side portions of the housing and the connector, respectively.

[0011] Preferably, a first limiting member and a second limiting member are disposed opposite to each other on the thermal pad, and the battery module is disposed between the first limiting member and the second limiting member.

[0012] Preferably, the mounting plate is provided with a cover plate corresponding to the control plate, the cover plate is recessed outward to form a groove, and the opening of the groove is provided corresponding to the control plate.

[0013] Preferably, a second sealing ring is provided between the cover plate and the mounting plate, and the second sealing ring is provided around the connection between the cover plate and the mounting plate.

[0014] Preferably, the surface of the liquid cooling plate is provided with meandering pipes, which are respectively connected to an inlet pipe and an outlet pipe.

[0015] Preferably, the mounting plate is equipped with an explosion-proof valve.

[0016] Preferably, the battery module is electrically connected to a first electrode and a second electrode, the first electrode including a first connecting piece and a second connecting piece, the first connecting piece being connected to the second connecting piece via a switch, and the switch being disposed on the mounting plate.

[0017] The beneficial effects of this utility model are as follows: This utility model includes a shell and a battery module disposed inside the shell. The shell is made of PP material and is manufactured by vacuum forming and CNC (numerical control lathe) processing. The battery module is a pack box with a modular structure design. The module can achieve automated standard operation, improving production efficiency. A liquid cooling plate is provided on one side of the shell. The coolant flowing inside the liquid cooling plate carries away the heat generated during battery charging and discharging to achieve the purpose of cooling. A thermally conductive pad is provided between the liquid cooling plate and the battery module. The thermally conductive pad is a thermally conductive silicone pad, which is used to conduct the heat generated during battery charging and discharging to the liquid cooling plate. The coolant flowing in the liquid cooling plate carries away the heat, thereby achieving the heat dissipation effect. A mounting plate is provided at one end of the shell. The mounting plate has a mounting groove. A control board is provided in the mounting groove. The control board is electrically connected to the battery module. By providing a mounting groove, subsequent maintenance only requires replacing the control board, which can achieve quick maintenance. The control board is a BMU (battery management unit). This invention improves heat dissipation by incorporating a thermal pad, which can be directly removed for maintenance, increasing repair efficiency. After maintenance, it can be directly reinstalled without re-attaching. The thermal pad is reusable, reducing maintenance costs. Attached Figure Description

[0018] Figure 1 This is one of the overall structural schematic diagrams of this utility model.

[0019] Figure 2 This utility model Figure 1 A magnified structural diagram of point A in the middle.

[0020] Figure 3 This is the second schematic diagram of the overall structure of this utility model.

[0021] Figure 4 This is one of the exploded views of this utility model.

[0022] Figure 5 This is the second exploded view of this utility model.

[0023] Figure 6 This is one of the overall structural diagrams of the mounting plate of this utility model.

[0024] Figure 7 This is the second schematic diagram of the overall structure of the mounting plate of this utility model.

[0025] Figure 8 This utility model Figure 7 A magnified structural diagram at point B in the middle.

[0026] The components are as follows: 1. Shell; 11. Connector; 12. Pressure strip; 13. Fixing component; 2. Battery module; 21. First electrode; 211. First connecting piece; 212. Second connecting piece; 22. Second electrode; 3. Liquid cooling plate; 31. Pipeline; 32. Water inlet pipe; 33. Water outlet pipe; 4. Thermal pad; 41. First limiting piece; 42. Second limiting piece; 5. Mounting plate; 51. Mounting groove; 52. Control plate; 53. Cover plate; 531. Groove; 54. Explosion-proof valve; 55. Switch; 6. Receiving cavity; 7. First sealing ring; 8. Second sealing ring; 81. Third sealing ring; 82. Fourth sealing ring; 9. First pressure plate; 10. Second pressure plate. Detailed Implementation

[0027] If certain terms are used in the specification and claims to refer to specific components, those skilled in the art will understand that manufacturers may use different names to refer to the same component. This specification and claims do not distinguish components based on differences in name, but rather on differences in function. The term "comprising" as used throughout the specification and claims is an open-ended term and should be interpreted as "comprising but not limited to." In this utility model, unless otherwise explicitly specified and limited, terms such as "installed," "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two elements. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0028] The following is in conjunction with the appendix Figures 1-8 The present invention will be further described in detail with reference to specific embodiments, but this is not intended to limit the present invention.

[0029] Example 1

[0030] A liquid-cooled energy storage battery structure includes a housing 1 and a battery module 2 disposed inside the housing 1. The housing 1 is made of PP material and is manufactured by vacuum forming and CNC (Computer Numerical Control) machining. The battery module 2 is a pack box with a modular structure design, enabling automated standard operation of the modules and improving production efficiency. A liquid cooling plate 3 is disposed on one side of the housing 1. The coolant flowing inside the liquid cooling plate 3 carries away the heat generated during battery charging and discharging to achieve the purpose of cooling. A heat-conducting structure is provided between the liquid cooling plate 3 and the battery module 2. The thermal pad 4 is a thermally conductive silicone pad used to conduct the heat generated during battery charging and discharging to the liquid cooling plate 3. The heat is then carried away by the coolant flowing in the liquid cooling plate 3, thus achieving a heat dissipation effect. One end of the housing 1 is provided with a mounting plate 5, which has a mounting groove 51. A control board 52 is installed in the mounting groove 51 and is electrically connected to the battery module 2. By providing the mounting groove 51, subsequent maintenance only requires replacing the control board 52, enabling rapid maintenance. The control board 52 is a BMU (Battery Management Unit). The use of the thermal pad 4 improves heat dissipation, allows for direct removal during maintenance, increasing maintenance efficiency, and enables direct reinstallation after maintenance without secondary application. The thermal pad 4 is reusable, reducing maintenance costs.

[0031] In this embodiment, a cavity 6 is formed between the housing 1 and the liquid cooling plate 3. The cavity 6 is a sealed cavity. The mounting plate 5 and the housing 1 are sealed together. The battery module 2 is disposed in the cavity 6. A first sealing ring 7 is provided between the liquid cooling plate 3 and the housing 1. The first sealing ring 7 is provided around the edge of the connection between the liquid cooling plate 3 and the housing 1. The first sealing ring 7 is used to enhance the waterproof sealing effect of the cavity 6.

[0032] In this embodiment, the opening of the housing 1 extends outward to form a connector 11. A pressure strip 12 is provided on one side of the connector 11. The connector 11 is positioned between the pressure strip 12 and the liquid cooling plate 3. The pressure strip 12, connector 11, first sealing ring 7, thermal pad 4, and liquid cooling plate 3 are connected by a fastener 13. The fastener 13 is a screw. The fastener 13 tightens the pressure strip 12 to compress the connector 11 and the first sealing ring 7, achieving both tightening and sealing effects.

[0033] In this embodiment, the outer sides of the connector 11 and the housing 1 form an L-shaped structure, and the pressure strip 12 is also L-shaped, with its sides abutting against the sides of the housing 1 and the connector 11, respectively. The fastener 13 adopts an L-shaped reinforcing structure, which improves the strength of the fastener 13, increases the distance between fasteners 13, thereby reducing the amount of fasteners 13 used, while meeting the IP67 waterproof requirement and improving production efficiency.

[0034] Example 2

[0035] The difference between this embodiment and Embodiment 1 is that a first limiting member 41 and a second limiting member 42 are disposed opposite each other on the thermal pad 4, and the battery module 2 is disposed between the first limiting member 41 and the second limiting member 42. By setting the first limiting member 41 and the second limiting member 42, the battery module 2 can be connected to the first limiting member 41 and the second limiting member 42 respectively during installation, so that the battery module 2 can be fixed.

[0036] In this embodiment, the mounting plate 5 is provided with a cover plate 53 corresponding to the control plate 52. The cover plate 53 is recessed outward to form a groove 531, and the opening of the groove 531 is correspondingly provided to the control plate 52. By providing the cover plate 53, it is easy to replace the control plate 52, and the groove 531 provides a larger accommodating space for the control plate 52, so that different models of control plates 52 can be installed.

[0037] In this embodiment, a second sealing ring 8 is provided between the cover plate 53 and the mounting plate 5, and the second sealing ring 8 is arranged around the edge of the connection between the cover plate 53 and the mounting plate 5. The second sealing ring 8 is used to enhance the sealing effect between the cover plate 53 and the mounting plate 5 and prevent liquid from entering the receiving cavity 6.

[0038] In this embodiment, a first pressure plate 9 and a second pressure plate 10 are respectively provided on the mounting plate 5. Both the first pressure plate 9 and the second pressure plate 10 are U-shaped structures. A third sealing ring 81 is provided between the first pressure plate 9 and the mounting plate 5, and a fourth sealing ring 82 is provided between the second pressure plate 10 and the mounting plate 5. The third sealing ring 81 and the fourth sealing ring 82 are respectively provided at both ends of the second sealing ring 8. The second sealing ring 8, the third sealing ring 81 and the fourth sealing ring 82 are integrally formed structures.

[0039] In this embodiment, the surface of the liquid cooling plate 3 is provided with meandering pipes 31, which are respectively connected to a water inlet pipe 32 and a water outlet pipe 33. This arrangement allows the coolant to circulate within the liquid cooling plate 3, thereby improving the cooling effect.

[0040] In this embodiment, an explosion-proof valve 54 is provided on the mounting plate 5. The explosion-proof valve 54 is connected to the receiving cavity 6 and is used for pressure relief.

[0041] In this embodiment, the battery module 2 is electrically connected to a first electrode 21 and a second electrode 22. A first connector and a second connector are provided on the mounting plate 5. The first electrode 21 is connected to the first connector, and the second electrode 22 is connected to the second connector. The first connector and the second connector are used to output current to the outside. The first electrode 21 includes a first connecting piece 211 and a second connecting piece 212. The first connecting piece 211 is connected to the second connecting piece 212 via a switch 55. The switch 55 is located on the mounting plate 5. The control board 52 can be connected in series with either the first electrode 21 or the second electrode 22; specifically, the control board 52 is connected in series with the first electrode 21. The switch 55 is used to disconnect the power; it is turned off when maintenance is required.

[0042] The other structures in this embodiment are the same as those in Embodiment 1, and will not be described again here.

[0043] Obviously, this utility model includes a housing and a battery module disposed inside the housing. The housing is made of PP material and is manufactured by vacuum forming and CNC (numerical control lathe) machining. The battery module is a pack box with a modular structure design. The module can achieve automated standard operation, improving production efficiency. A liquid cooling plate is provided on one side of the housing. The coolant flowing inside the liquid cooling plate carries away the heat generated during battery charging and discharging to achieve the purpose of cooling. A thermally conductive pad is provided between the liquid cooling plate and the battery module. The thermally conductive pad is a thermally conductive silicone pad, which is used to conduct the heat generated during battery charging and discharging to the liquid cooling plate. The coolant flowing in the liquid cooling plate carries away the heat, thereby achieving the heat dissipation effect. A mounting plate is provided at one end of the housing. The mounting plate has a mounting groove. A control board is disposed in the mounting groove. The control board is electrically connected to the battery module. By providing a mounting groove, subsequent maintenance only requires replacing the control board, which can achieve quick maintenance. The control board is a BMU (battery management unit). This invention improves heat dissipation by incorporating a thermal pad, which can be directly removed for maintenance, increasing repair efficiency. After maintenance, it can be directly reinstalled without re-attaching. The thermal pad is reusable, reducing maintenance costs.

[0044] Based on the disclosure and teachings of the above specification, those skilled in the art can make changes and modifications to the above embodiments. Therefore, the utility model is not limited to the specific embodiments described above, and any obvious improvements, substitutions, or modifications made by those skilled in the art based on the utility model are within the protection scope of the utility model. Furthermore, although some specific terms are used in this specification, these terms are only for convenience of explanation and do not constitute any limitation on the utility model.

Claims

1. A liquid-cooled energy storage battery structure, characterized by, The application relates to a battery module, which comprises a shell (1) and a battery module (2) arranged in the shell (1), one side of the shell (1) is provided with a liquid cooling plate (3), a heat-conducting pad (4) is arranged between the liquid cooling plate (3) and the battery module (2), one end of the shell (1) is provided with a mounting plate (5), the mounting plate (5) is provided with a mounting groove (51), a control plate (52) is arranged in the mounting groove (51), and the control plate (52) is electrically connected with the battery module (2).

2. The liquid-cooled energy storage battery structure of claim 1, wherein, A containing cavity (6) is formed between the shell (1) and the liquid cooling plate (3), the battery module (2) is arranged in the containing cavity (6), a first sealing ring (7) is arranged between the liquid cooling plate (3) and the shell (1).

3. The liquid-cooled energy storage battery structure of claim 2, wherein, The opening of the shell (1) extends outward to form a connecting piece (11), one side of the connecting piece (11) is provided with a pressing strip (12), the connecting piece (11) is arranged between the pressing strip (12) and the liquid cooling plate (3), the pressing strip (12), the connecting piece (11), the first sealing ring (7), the heat-conducting pad (4) and the liquid cooling plate (3) are connected through a fixing piece (13).

4. The liquid-cooled energy storage battery structure of claim 3, wherein, The connecting piece (11) and the outer side of the shell (1) form an L-shaped structure, the pressing strip (12) is also in an L-shaped structure, and the side portions of the pressing strip (12) abut against the side portions of the shell (1) and the connecting piece (11) respectively.

5. The liquid-cooled energy storage battery structure of claim 1, wherein, First and second limiting pieces (41) and (42) are oppositely arranged on the heat-conducting pad (4), and the battery module (2) is arranged between the first and second limiting pieces (41) and (42).

6. The liquid-cooled energy storage battery structure of claim 3, wherein, A cover plate (53) corresponding to the control plate (52) is arranged on the mounting plate (5), the cover plate (53) is recessed outward to form a recess (531), and the opening of the recess (531) is arranged in correspondence with the control plate (52).

7. The liquid-cooled energy storage battery structure of claim 6, wherein, A second sealing ring (8) is arranged between the cover plate (53) and the mounting plate (5), and the second sealing ring (8) is arranged around the connecting portion of the cover plate (53) and the mounting plate (5).

8. The liquid-cooled energy storage battery structure of claim 1, wherein, A pipeline (31) is arranged on the surface of the liquid cooling plate (3) in a meandering manner, and the pipeline (31) is respectively communicated with a water inlet pipe (32) and a water outlet pipe (33).

9. The liquid-cooled energy storage battery structure of claim 2, wherein, An explosion-proof valve (54) is arranged on the mounting plate (5).

10. The liquid-cooled energy storage battery structure of claim 1, wherein, The battery module (2) is electrically connected with first and second pole pieces (21) and (22) respectively, the first pole piece (21) comprises first and second connecting pieces (211) and (212), the first connecting piece (211) is connected with the second connecting piece (212) through a switch (55), and the switch (55) is arranged on the mounting plate (5).

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