Ship power battery structure

Abstract

The utility model belongs to a ship power battery structure in the technical field of ship power components. Comprising a box bottom (101) and a box cover (102), a box bottom side plate (125) is arranged on one side of the box bottom (101), a box cover opening (126) is formed in one side of the box cover (102), a module (112) comprises a plurality of battery cells, a liquid cooling plate (103) is located on the lower portion of the module (112), a heat conduction pad (122) is arranged between the liquid cooling plate (103) and the battery cells of the module (112), through holes are formed in the edge of the box cover opening (126), and a plurality of screw holes are formed in the box bottom side plate (125). The ship power battery structure is simple to manufacture, the internal structure of the battery pack can be effectively simplified, the energy density is improved, the heat dissipation efficiency is improved, the working performance of the battery is effectively improved, and the service life of the battery is effectively prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of marine power components, and more specifically, it relates to a marine power battery structure. Background Technique

[0002] With the development of the new energy industry and the global attention to reducing ship emissions and improving energy efficiency, the development of electric ships and hybrid ships has been rapid, posing higher requirements for the performance, safety and lifespan of marine batteries. The marine liquid-cooled battery pack technology has emerged under this background, aiming to solve the limitations of traditional air-cooled systems in the application of high-energy-density batteries.

[0003] In the prior art, in order to make the volume utilization rate of the liquid-cooled battery pack higher, a structure form of stacking upper and lower double-layer modules is usually adopted. The structures of the upper module and the lower module are the same, and each has its own liquid-cooled plate. The liquid-cooled plates are respectively designed with upper support plates and lower support plates, and the modules are fixed on the upper support plates. The fixing method is complex and the heat dissipation efficiency is low.

[0004] There is a technology with the name of "a battery box body, a battery pack, a battery cluster and an energy storage device" and a publication number of "CN116365157A" in the prior art. This technology discloses a battery box body, a battery pack, a battery cluster and an energy storage device. The battery box body includes a box body main body and a cover body. The box body main body includes a receiving cavity with an opening and a liquid-cooling cavity. The receiving cavity is formed in the middle of the box body main body and is used to install a plurality of battery modules arranged in a first direction. The box body main body includes a first substrate facing the receiving cavity and a second substrate facing away from the receiving cavity. The first substrate and the second substrate are connected to enclose the liquid-cooling cavity. A plurality of protruding structures spaced apart in the first direction and protruding towards the receiving cavity are provided on the first substrate, so that the battery modules are respectively clamped between adjacent two protruding structures. The protruding structures have cavities communicated with the liquid-cooling cavity. An inlet and an outlet communicated with the liquid-cooling cavity are provided on the first substrate or the second substrate. The cover body is used to cover the opening. The present invention can prevent a plurality of battery modules from sliding relative to the liquid-cooled plate to avoid mutual impact between the plurality of battery modules, and improves the safety of the battery pack.

[0005] However, this technology does not involve the technical problems and technical solutions of the present application. Content of the Utility Model

[0006] The technical problem to be solved by the utility model is: aiming at the deficiencies of the prior art, to provide a marine power battery structure that is simple to manufacture, can effectively simplify the internal structure of the battery pack, improve the energy density, increase the heat dissipation efficiency, and effectively improve the working performance and service life of the battery.

[0007] To solve the above-mentioned technical problems, the technical solution adopted by the utility model is:

[0008] The utility model relates to a ship power battery structure, which includes a box bottom and a box cover. A box bottom side plate is arranged on one side of the box bottom, and a box cover opening is arranged on one side of the box cover. The module includes a plurality of battery cells. The liquid cooling plate is located below the module, and a heat conduction pad is arranged between the liquid cooling plate and the battery cells of the module. Through holes are arranged on the edge of the box cover opening, and a plurality of screw holes are arranged on the box bottom side plate.

[0009] On the side of the box bottom where the box bottom side plate is not arranged, a box bottom flange edge that turns outwards is arranged. On the side of the box cover where the box cover opening is not arranged, a box cover flange edge that turns outwards is arranged.

[0010] Two through-box joints are arranged on the box bottom side plate. One end of the liquid cooling plate is provided with a liquid inlet and a liquid outlet. The liquid inlet is connected to one through-box joint through a liquid inlet pipe, and the liquid outlet is connected to the other through-box joint through a liquid outlet pipe.

[0011] A fixed cross bar is arranged on the box bottom, and the battery management unit is fixed to the fixed cross bar through fasteners.

[0012] Positive and negative electrode lead-out columns are arranged on the box bottom. The positive and negative electrode lead-out columns and the module are connected through copper bars. The CCS integrated row integrally sets sensors and sampling wire harnesses. The CCS integrated row is connected to the battery management unit. The CCS integrated row is limited by a wire harness bracket and then welded to the battery cells.

[0013] The module includes an upper cover plate, a lower cover plate, and battery cells. An insulating material layer is arranged between the battery cells and the upper cover plate, and a liquid cooling plate and an insulating material layer are arranged between the battery cells and the lower cover plate.

[0014] A strengthening structure is arranged on the box bottom, and the strengthening structure is in a shape of "J".

[0015] Sealing rings are arranged between the liquid inlet pipe and the liquid inlet, and between the liquid outlet pipe and the liquid outlet.

[0016] The liquid inlet pipe and the liquid outlet pipe are made of stainless steel hose material.

[0017] A sealing gasket is arranged between the box bottom flange edge of the box bottom and the box cover flange plate of the box cover. The box bottom flange edge and the box cover flange edge are fixedly connected through fasteners passing through the box bottom flange edge, the sealing gasket, and the box cover flange edge.

[0018] Adopting the technical solution of the utility model, the working principle and beneficial effects are as follows:

[0019] The battery structure of the ship power battery described in the present utility model. The battery pack includes a battery module and a battery management system. The liquid cooling plate is arranged at the bottom of the module. The liquid cooling plate is a part of the module. The liquid cooling plate contacts the lower part of the battery cell via a heat conduction pad, which is used to improve the heat exchange between the liquid cooling plate and the battery cell. The battery cell is directly fixed on the liquid cooling plate. As a part of the module, the liquid cooling plate can simplify the structure of the battery pack, improve the production efficiency and the heat dissipation efficiency. Equipping one liquid cooling plate for a single-layer battery cell can ensure the liquid cooling effect, increase the service life and the usage cycle of the battery. A heat conduction pad is arranged between the liquid cooling plate and the bottom of the battery cell to fill the gap between the liquid cooling plate and the bottom of the module. At the same time, by using the better heat transfer performance of the heat conduction pad compared with air, the heat dissipation function can be fully exerted, and the heat conduction pad can also be used to fix the battery cell by its adhesiveness. In this application, the liquid cooling plate is formed by stamping, which has a short production cycle and can meet mass production. The stamping method can customize the internal flow channels, thereby increasing the heat dissipation efficiency and ensuring the strength. The liquid inlet interface and the liquid outlet interface of the liquid cooling plate are connected by a special pipeline. The pipeline is made of stainless steel material, which has guaranteed safety, is suitable for marine batteries, and the pipeline is located outside the box. Only an aluminum joint with a sealing effect needs to be connected to avoid risks such as collision. The stainless steel pipeline does not occupy too much space, and the risk of water leakage can also be effectively reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The following briefly describes the content expressed in each drawing of this specification and the marks in the drawings:

[0021] Figure 1 It is an exploded structural schematic diagram of the ship power battery structure described in the present utility model;

[0022] Figure 2 It is a structural schematic diagram of the module of the ship power battery structure described in the present utility model;

[0023] Figure 3 It is a structural schematic diagram of the box cover of the ship power battery structure described in the present utility model;

[0024] The marks in the drawings are respectively: 101. Box body main body, 102. Box cover, 103. Liquid cooling plate, 104. Liquid inlet, 105. Liquid outlet, 106. Liquid inlet pipe, 107. Liquid outlet pipe, 108. Reinforcing structure, 109. Fixed cross bar, 110. Sealing gasket, 111. Battery management unit, 112. Module, 113. Wiring harness bracket, 114. Module side plate, 115. Upper cover plate, 116. Through-box joint, 117. Mounting plate, 118. Positioning device, 119. Copper busbar, 120. Positive and negative electrode lead-out posts, 121. Explosion-proof pressure relief valve, 122. Heat conduction pad, 123. Battery cell, 124. CCS integrated row, 125. Box bottom side plate, 126. Box cover opening, 127. Box bottom flange edge, 128. Box cover flange edge, 129. Lower cover plate. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] The following will further elaborate in detail on the specific implementation manners of the present utility model, such as the shapes, structures of the various components involved, the mutual positions and connection relationships between the various parts, the functions of the various parts, and the working principles, etc., with reference to the accompanying drawings and through the description of the embodiments:

[0026] As shown in the attached Figure 1 - attached Figure 3 figures, the present utility model is a ship power battery structure, which includes a bottom case 101 and a top cover 102. A bottom case side plate 125 is provided on one side of the bottom case 101, and a top cover opening 126 is provided on one side of the top cover 102. The module 112 includes a plurality of battery cells. The liquid cooling plate 103 is located below the module 112. A heat conducting pad 122 is provided between the liquid cooling plate 103 and the battery cells of the module 112. Through holes are provided on the edge of the top cover opening 126, and a plurality of screw holes are provided on the bottom case side plate 125. For the deficiencies in the prior art, the above structure proposes an improved technical solution. When the structure is set, the battery pack includes a battery module 112 and a battery management system 111. The liquid cooling plate is arranged at the bottom of the module 112. The liquid cooling plate 103 is a part of the module 112. The liquid cooling plate 103 contacts the lower part of the battery cells 123 via the heat conducting pad 122, which is used to effectively improve the heat exchange between the liquid cooling plate 103 and the battery cells 123. The battery cells are directly fixed on the liquid cooling plate 103. The liquid cooling plate, as a part of the module, can simplify the structure of the battery pack, improve the production efficiency and the heat dissipation efficiency. Equipping one liquid cooling plate for a single layer of battery cells can ensure the liquid cooling effect, increase the battery life and the service cycle. A heat conducting pad 122 is provided between the liquid cooling plate 103 and the bottom of the battery cells, filling the gap between the liquid cooling plate 103 and the bottom of the module 112. At the same time, by using the better heat transfer property of the heat conducting pad 122 compared with air, the heat dissipation function can be fully exerted, and the heat conducting pad 122 can also be used to fix the battery cells with its viscosity. In this application, the liquid cooling plate is formed by stamping. The production cycle is short, which can meet mass production. The stamping forming method can customize the internal flow channels, thereby increasing the heat dissipation efficiency and ensuring the strength. The liquid inlet interface and the liquid outlet interface of the liquid cooling plate are connected by a special pipeline. The pipeline is made of stainless steel material, with guaranteed safety, suitable for marine batteries. And the pipeline is located outside the case, only need to connect an aluminum joint with a sealing effect to avoid risks such as collision. The stainless steel pipeline does not occupy too much space, and the risk of water leakage will also be reduced, effectively meeting the requirements of marine batteries. The ship power battery structure described in the present utility model is simple to manufacture, can effectively simplify the internal structure of the battery pack, improve the energy density, increase the heat dissipation efficiency, and effectively improve the battery working performance and service life.

[0027] On the side of the bottom case 101 where the bottom case side plate 125 is not provided, a bottom case flange 127 that turns outwards is provided. On the side of the top case 102 where the top case opening 126 is not provided, a top case flange 128 that turns outwards is provided. A gasket 110 is provided between the bottom case flange 127 of the bottom case 101 and the top case flange plate 128 of the top case 102. The bottom case flange 127 and the top case flange 128 are fixedly connected by fasteners passing through the bottom case flange 127, the gasket 110, and the top case flange 128. In the above structure, the bottom case flange 127 and the top case flange 128 facilitate the reliable connection of the bottom case and the top case by fasteners (screws), and the gasket 110 improves the sealing and waterproof effect.

[0028] Two through-case connectors 116 are provided on the bottom case side plate 125. One end of the liquid cooling plate 103 is provided with a liquid inlet 104 and a liquid outlet 105. The liquid inlet 104 is connected to one through-case connector 116 through a liquid inlet pipe 106, and the liquid outlet 105 is connected to the other through-case connector 116 through a liquid outlet pipe 107. In the above structure, the through-case connectors 116 are used to connect to the outside to realize the supply of the coolant. The liquid inlet 104 is connected to one through-case connector 116 through the liquid inlet pipe 106, and the liquid outlet 105 is connected to the other through-case connector 116 through the liquid outlet pipe 107 to realize the circulation of the coolant. Sealing rings are respectively provided on the liquid inlet pipe 106 and the liquid outlet pipe 107. The sealing rings improve the sealing performance of the liquid inlet 104 and the liquid outlet 105. As an insurance, it avoids the risk of liquid cooling medium invading the battery pack and causing short circuits, etc. Moreover, the liquid inlet pipe 106 and the liquid outlet pipe 107 are made of stainless steel hose material, with strong layout applicability, not occupying much space, saving space and reducing the risk of water leakage.

[0029] A fixed cross bar 109 is provided on the bottom case 101. The battery management unit 111 and the fixed cross bar 109 are fixedly connected by fasteners. In the above structure, the fixed cross bar 109 is provided on the bottom case 101 to position the battery management unit 111. The battery management unit 111 and the fixed cross bar 109 are fixedly connected by fasteners. In this way, during the installation and disassembly process of the battery management unit 111, it is relatively easy to separate from the module and the bottom case body 101, making it easier to maintain and repair. An explosion-proof pressure relief valve 121 is provided on the bottom case 101 to facilitate the discharge of the pressure in the box when the battery cells experience thermal runaway.

[0030] The bottom of the box 101 is provided with positive and negative electrode lead-out posts 120. The positive and negative electrode lead-out posts 120 and the module 112 are connected by a copper bar 119. The CCS integrated row 124 integrates sensors and sampling wire harnesses. The CCS integrated row 124 is connected to the battery management unit 111. The CCS integrated row 124 is limited by a wire harness bracket 113 and then welded to the battery cell 123. In the above structure, the positive and negative electrode lead-out posts 120 and the module 112 are power-connected by the copper bar 119. The CCS integrated row 124 integrates sensors and sampling wire harnesses and outputs signals to the battery management unit 111 for management.

[0031] The module 112 includes an upper cover plate 115, a lower cover plate 130, and a battery cell 123. An insulating material layer is provided between the battery cell 123 and the upper cover plate 115. A liquid cooling plate and an insulating material layer are provided between the battery cell 123 and the lower cover plate 130. In the above structure, the liquid cooling plate 103 is located above the lower cover plate of the module, that is, it is arranged in contact with the lower part of the battery cell, so as to be used as a part of the module and reliably realize the heat dissipation function.

[0032] The bottom of the box 101 is provided with a strengthening structure 108, and the strengthening structure 108 is a U-shaped structure. An installation plate 117 and a positioning device 118 are provided on the box cover 102. In the above structure, the strengthening structure 108 is a U-shaped strengthening bar, which can be obtained by stamping or bending processes. The shape of the strengthening bar is relatively adapted to the shape of the side plate 114 of the module. Since the strengthening structure 108 of the box body 101 is obtained by stamping or bending processes, the module 112 can be fully positioned. The settings of the installation plate 117 and the positioning device 118 are beneficial to the movement and installation of the battery pack.

[0033] A sealing ring is provided between the liquid inlet pipe 106 and the liquid inlet 104, and a sealing ring is provided between the liquid outlet pipe 107 and the liquid outlet 105. In the above structure, the sealing ring plays a role in sealing the pipeline.

[0034] The liquid inlet pipe 106 and the liquid outlet pipe 107 are made of stainless steel hose material.

[0035] For the ship power battery structure described in the present utility model, when the structure is set, the battery pack includes a battery module 112 and a battery management system 111. The liquid cooling plate is arranged at the bottom of the module 112. The liquid cooling plate 103 is a part of the module 112. The liquid cooling plate 103 contacts the lower part of the battery cell 123 via a heat conducting pad 122, which is used to effectively improve the heat exchange between the liquid cooling plate 103 and the battery cell 123. The battery cell is directly fixed on the liquid cooling plate 103. The liquid cooling plate 103, as a part of the module, can simplify the structure of the battery pack, improve the production efficiency and the heat dissipation efficiency. Equipping one liquid cooling plate 103 for a single-layer battery cell can ensure the liquid cooling effect, increase the service life and the usage cycle of the battery. A heat conducting pad 122 is arranged between the liquid cooling plate 103 and the bottom of the battery cell to fill the gap between the liquid cooling plate 103 and the bottom of the module 112. At the same time, by using the better heat transfer property of the heat conducting pad 122 compared with air, the heat dissipation function can be fully exerted, and the heat conducting pad 122 can also be used to fix the battery cell with its adhesiveness. The liquid cooling plate 103 in this application is formed by stamping. The production cycle is short, which can meet mass production. The stamping method can customize the internal flow channels, thereby increasing the heat dissipation efficiency and ensuring the strength. The liquid inlet interface and the liquid outlet interface of the liquid cooling plate are connected by a special pipeline. The pipeline is made of stainless steel material, with guaranteed safety, suitable for marine batteries. And the pipeline is located outside the box, only need to connect an aluminum joint with a sealing effect to avoid risks such as collision. The stainless steel pipeline does not occupy too much space, and the risk of water leakage will also be reduced, effectively meeting the requirements of marine batteries.

[0036] The present utility model has been described exemplarily in combination with the accompanying drawings. Obviously, the specific implementation of the present utility model is not limited by the above methods. As long as various improvements are made by adopting the method concept and technical solution of the present utility model, or the concept and technical solution of the present utility model are directly applied to other occasions without improvement, they are all within the protection scope of the present utility model.

Claims

1. A ship power battery structure, characterized in that: The invention comprises a box bottom (101) and a box cover (102), wherein a box bottom side plate (125) is arranged on one side of the box bottom (101), and a box cover opening (126) is arranged on one side of the box cover (102); the module (112) comprises a plurality of battery cells; the liquid cooling plate (103) is located at the lower part of the module (112); a thermal pad (122) is arranged between the liquid cooling plate (103) and the battery cells of the module (112); a through hole is arranged at the edge of the box cover opening (126); and a plurality of screw holes are arranged on the box bottom side plate (125).

2. The ship power battery structure according to claim 1, characterized in that: The side of the box bottom (101) not provided with the box bottom side plate (125) is provided with a box bottom flange edge (127) turned outward, and the side of the box cover (102) not provided with the box cover opening (126) is provided with a box cover flange edge (128) turned outward.

3. The ship power battery structure according to claim 1 or 2, characterized in that: Two box-penetrating joints (116) are provided on the box bottom side plate (125), and a liquid inlet (104) and a liquid outlet (105) are provided at one end of the liquid cooling plate (103). The liquid inlet (104) is connected to one box-penetrating joint (116) through a liquid inlet pipe (106), and the liquid outlet (105) is connected to another box-penetrating joint (116) through a liquid outlet pipe (107).

4. The ship power battery structure according to claim 1 or 2, characterized in that: A fixed horizontal bar (109) is provided on the box bottom (101), and the battery management unit (111) and the fixed horizontal bar (109) are fixed by fasteners.

5. The ship power battery structure according to claim 1 or 2, characterized in that: The box bottom (101) is provided with positive and negative lead-out posts (120), the positive and negative lead-out posts (120) and the module (112) are connected via a copper busbar (119), a CCS integrated busbar (124) is integrated with a sensor and a sampling harness, the CCS integrated busbar (124) is connected to a battery management unit (111), and the CCS integrated busbar (124) is limited by a harness bracket (113) and then welded to the battery cell (123).

6. The ship power battery structure according to claim 1 or 2, characterized in that: The module (112) comprises an upper cover plate (115), a lower cover plate (129), and a battery cell (123); an insulating material layer is arranged between the battery cell (123) and the upper cover plate (115); and a liquid cooling plate (103) and an insulating material layer are arranged between the battery cell (123) and the lower cover plate (129).

7. The ship power battery structure according to claim 1 or 2, characterized in that: The box bottom (101) is provided with a reinforcement structure (108), and the reinforcement structure (108) is a "X"-shaped structure.

8. The ship power battery structure according to claim 3, characterized in that: A sealing ring is arranged between the liquid inlet pipe (106) and the liquid inlet port (104), and a sealing ring is arranged between the liquid outlet pipe (107) and the liquid outlet port (105).

9. The ship power battery structure according to claim 3, characterized in that: The liquid inlet pipe (106) and the liquid outlet pipe (107) are structures made of stainless steel hose material.

10. The ship power battery structure according to claim 2, characterized in that: A sealing gasket (110) is arranged between the box bottom flange edge (127) of the box bottom (101) and the box cover flange edge (128) of the box cover (102); the box bottom flange edge (127) and the box cover flange edge (128) are fixedly connected by fasteners passing through the box bottom flange edge (127), the sealing gasket (110) and the box cover flange edge (128).

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