Battery cell liquid cooling restraining tray
By using the water-cooled plate and the contact cooling method of the liquid-cooled restraint tray to cool the cells, the problems of uneven temperature and high energy consumption in the cell capacity testing process are solved, thereby improving the temperature uniformity of the cells and the assembly efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHENZHEN RUINENG INNOVATION TECH CO LTD
- Filing Date
- 2025-06-03
- Publication Date
- 2026-05-19
AI Technical Summary
In the existing cell capacity testing process, air cooling to regulate cell temperature leads to uneven local temperature, high energy consumption, and unstable assembly.
A liquid-cooled restraint tray is adopted, which uses water-cooled plates and fins to contact and cool down the cells. The restraint and release of the cells are achieved by controlling the liquid pressure. Combined with modular design, the uniformity of cell temperature and assembly stability are ensured.
This improved the uniformity of cell temperature, reduced air turbulence, lowered energy consumption, and increased assembly efficiency and production costs.
Smart Images
Figure CN224264125U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of battery cell manufacturing technology, and in particular to a battery cell liquid-cooled restraint tray. Background Technology
[0002] The cell capacity testing process needs to be completed in an environment with normal temperature (25±2℃). Frequent charging and discharging during the capacity testing process can easily cause a large temperature difference in the cell, so it is necessary to cool the cell in real time and control the ambient temperature.
[0003] In existing technologies, air cooling is typically used to regulate the temperature of the battery cells, while air conditioning or other refrigeration equipment is used to control the ambient temperature. However, while air cooling cools the battery cells, it can also create air turbulence within the capacity testing area, causing uneven local temperatures and resulting in uneven battery cell temperatures. Furthermore, the temperature rise of the battery cells during the charging and discharging process raises the ambient temperature, necessitating the use of air conditioning or other refrigeration equipment to control the ambient temperature, which consumes a lot of energy. Utility Model Content
[0004] The main purpose of this invention is to provide a liquid-cooled restraint tray for battery cells, which aims to improve the heat dissipation efficiency of battery cells, ensure uniform temperature of battery cells, and reduce energy consumption.
[0005] To achieve the above objectives, the present invention provides a liquid-cooled battery cell restraint tray, comprising:
[0006] A cell tray for holding multiple cells;
[0007] Multiple liquid cooling components, each of which includes a bladder and a water-cooling plate, wherein the water-cooling plate has a recessed groove, and the periphery of the bladder is sealed to the periphery of the groove of the water-cooling plate to form a deformable sealed cavity, and the water-cooling plate is disposed on the cell tray.
[0008] The water-cooled plate is provided with a liquid inlet connector and a liquid outlet connector. The liquid inlet connector and the liquid outlet connector are respectively connected to the sealed cavity. The liquid inlet connector can introduce temperature-controlled liquid, which causes the capsule to expand and compress the battery cell and perform heat exchange.
[0009] Furthermore, the cell tray is provided with an inlet manifold, which connects to the inlet connectors of the water-cooling plates on both sides; the cell tray is provided with a return manifold, which connects to the outlet connectors of the water-cooling plates on both sides.
[0010] Furthermore, multiple liquid inlet connectors are provided on both sides of the liquid inlet manifold, and the multiple liquid inlet connectors are connected one-to-one with the multiple liquid inlet connectors through liquid inlet pipes; multiple liquid outlet connectors are provided on both sides of the multiple liquid return manifolds, and the multiple liquid outlet connectors are connected one-to-one with the multiple liquid outlet connectors through liquid outlet pipes.
[0011] Furthermore, both the inlet manifold and the return manifold are hollow rods. The front and rear plates of the cell tray are respectively provided with an inlet and an outlet. The two ends of the inlet manifold are respectively connected to the inlets on both sides of the cell tray, and the two ends of the return manifold are respectively connected to the outlets on both sides of the cell tray.
[0012] Furthermore, the bladder is provided with reinforcing ribs on the side facing the water-cooling plate.
[0013] Furthermore, the capsule is made of polyurethane.
[0014] Furthermore, the liquid cooling assembly also includes a bladder strip, and a connecting frame strip is provided around the periphery of the bladder. The bladder strip presses onto the connecting frame strip to form the sealed cavity.
[0015] Furthermore, the connecting frame strip is glued to the water-cooling plate.
[0016] Furthermore, the cell tray has multiple mounting strips inside, and the mounting strips have multiple mounting slots on the side facing the water-cooling plate. The mounting slots between each pair of adjacent rows of mounting strips can be used to insert the water-cooling plate.
[0017] Furthermore, the water-cooled plate has limit holes on both sides of its bottom, and the battery cell has limit mounting blocks on both sides. The limit mounting blocks have hooks for insertion into the limit holes.
[0018] Compared with the prior art, the battery cell liquid cooling restraint tray of this utility model has the following advantages: (1) The battery cell liquid cooling restraint tray of this utility model adopts water cooling plate contact cooling method. The water cooling plate and the bladder are attached to both sides of the battery cell to ensure uniform heat exchange after the battery cell heats up. The cooling fan is eliminated, the air turbulence in the storage space is reduced, the unevenness of local ambient temperature is improved, the battery cell temperature uniformity is better, and the water cooling heat dissipation efficiency is better than air cooling; (2) Since the bladder of this utility model is directly fixed on the water cooling plate and the water cooling plate is directly fixed in the battery cell tray, the bladder assembly structure is stable and the assembly is convenient, which can effectively improve the assembly efficiency; (3) The battery cell liquid cooling restraint tray of this utility model can realize the rapid adjustment of the battery cell restraint pressure by controlling the liquid pressure, and the rapid release of the battery cell can be realized by depressurizing the bladder; (4) The battery cell liquid cooling restraint tray of this utility model can realize modular design and is easy to manufacture, effectively reducing production costs. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the structure of the liquid-cooled restraint tray for battery cells of this utility model;
[0020] Figure 2 This is a schematic diagram of the battery cell liquid cooling restraint tray of this utility model without the battery cell and liquid cooling assembly.
[0021] Figure 3 This is a schematic diagram of the liquid cooling assembly in the liquid-cooled restraint tray for battery cells of this utility model;
[0022] Figure 4 This is a schematic diagram of the liquid cooling assembly in the battery cell liquid cooling restraint tray of this utility model from another perspective;
[0023] Figure 5 This is an exploded view of the liquid cooling assembly in the liquid-cooled restraint tray for battery cells of this utility model;
[0024] Figure 6 This is an exploded view of the liquid cooling assembly in the liquid-cooled restraint tray of the battery cell of this utility model from another perspective.
[0025] Reference numerals: 100, Cell tray; 110, Cell; 200, Liquid cooling assembly; 210, Blade; 220, Water-cooled plate; 221, Groove; 223, Liquid inlet connector; 224, Liquid outlet connector; 300, Liquid inlet manifold; 400, Liquid return manifold; 310, Liquid inlet tap; 410, Liquid outlet tap; 120, Liquid inlet; 130, Liquid outlet; 211, Blade pressure strip; 212, Connecting frame strip; 213, Reinforcing rib; 140, Mounting strip; 141, Mounting slot; 225, Limiting hole; 150, Limiting mounting block; 151, Hook. Detailed Implementation
[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0027] Please see Figures 1 to 6 This utility model proposes a liquid-cooled restraint tray for battery cells, which can be used in room temperature capacity distribution equipment to replace and upgrade the original injection-molded tray, thereby reducing the heat emitted into the capacity distribution storage environment.
[0028] The battery cell liquid-cooled restraint tray includes a battery cell tray 100 and multiple liquid-cooling components 200. The battery cell tray 100 is used to support multiple battery cells 110. Each liquid-cooling component 200 includes a bladder 210 and a water-cooling plate 220. The water-cooling plate 220 has a recessed groove 221. The periphery of the bladder 210 is sealed to the periphery of the groove 221 of the water-cooling plate 220 to form a deformable sealed cavity. The water-cooling plate 220 is disposed on the battery cell tray 100. The water-cooling plate 220 is provided with a liquid inlet connector 223 and a liquid outlet connector 224. The liquid inlet connector 223 and the liquid outlet connector 224 are respectively connected to the sealed cavity. The liquid inlet connector 223 can introduce a temperature-controlled liquid, causing the bladder 210 to expand and compress the battery cell 110 and perform heat exchange.
[0029] Specifically, the liquid cooling assembly 200 controls the expansion and contraction of the fins 210 to restrain and release the battery cell 110. The recessed groove 221 formed within the water-cooling plate 220 communicates with the inlet connector 223 and the outlet connector 224, and together with the fins 210, forms a sealed cavity for filling with a temperature-controlled liquid. This temperature-controlled liquid can be water, ethylene glycol, etc.; for example, water is used as the temperature-controlled liquid entering the water-cooling plate 220. The fins 210 can be installed on only one side of the water-cooling plate 220, or on both sides to form a sealed cavity, depending on the specific situation. The key is to ensure effective restraint and temperature control of the battery cell 110. During assembly, the fins 210 are pressed onto the water-cooling plate 220, ensuring a tight seal between the edges of the fins 210 and the water-cooling plate 220, thus forming a sealed cavity. When it is necessary to constrain the battery cell 110, a temperature-controlled liquid is supplied to the sealed cavity inside the water-cooling plate 220 by directly or indirectly connecting the inlet connector 223 and the outlet connector 224 through an external chiller. By controlling the pressure of the temperature-controlled liquid flowing into the sealed cavity, the pressure of the bladder 210 expanding and compressing the battery cell 110 can be controlled to complete the constraining. At the same time, the bladder 210 and the water-cooling plate 220 are in direct and close contact with the two sides of the battery cell 110 to exchange heat, ensuring that the water circulation is continuous and rapid to dissipate heat from the battery cell 110. Since the thermal conductivity of water at room temperature and pressure is about 20 times that of air, the heat dissipation efficiency can be greatly improved compared to the existing air cooling method. When it is necessary to release the constraining, the external chiller can reduce the water supply pressure or extract the temperature-controlled liquid from the sealed cavity. The bladder 210 deforms and contracts, and the bladder 210 releases the pressure on the battery cell 110, thus releasing the constraining of the battery cell 110. To achieve precise control of the injection pressure inside the sealed cavity, a PLC can be used to send commands via RS-485 communication to control the water pressure value and the water inlet and outlet of the bladder. With this setting, the liquid-cooled restraint tray of the battery cell of this utility model has the following advantages: (1) The liquid-cooled restraint tray of the battery cell of this utility model adopts the contact cooling method of water-cooled plate 220. The water-cooled plate 220 and the bladder 210 are attached to both sides of the battery cell 110 to ensure that the heat generated by the battery cell 110 is evenly exchanged. The cooling fan is eliminated, the air turbulence in the storage area is reduced, the unevenness of the local ambient temperature is improved, and the temperature uniformity of the battery cell 110 is better. Compared with air cooling, water cooling has better heat dissipation efficiency; (2) The liquid-cooled restraint tray of the battery cell of this utility model has the following advantages: (1) The liquid-cooled restraint tray of the battery cell of this utility model adopts the contact cooling method of water-cooled plate 220. The water-cooled plate 220 and the bladder 210 are attached to both sides of the battery cell 110, which ensures that the heat generated by the battery cell 110 is evenly exchanged. The cooling fan is eliminated, the air turbulence in the storage area is reduced, the unevenness of the local ambient temperature is improved, and the temperature uniformity of the battery cell 110 is better. Compared with air cooling, water cooling has better heat dissipation efficiency; (2) The liquid-cooled restraint tray of the battery cell of this utility model has the following advantages: (1) The water-cooled plate 220 and the bladder 210 are attached to both sides of the battery cell 110, which ensures that the heat generated by the battery cell 110 is evenly exchanged. The cooling fan is eliminated, the air turbulence in the storage area is reduced, the unevenness of the local ambient temperature is improved, and 210 is directly fixed on the water-cooled plate 220, and the water-cooled plate 220 is directly fixed in the cell tray 100, so that the assembly structure of the bladder 210 is stable and easy to assemble, which can effectively improve the assembly efficiency; (3) The cell liquid-cooled restraint tray of this utility model can control the liquid pressure through a precision pressure regulating valve to achieve rapid adjustment of the restraint pressure of the cell 110, and can achieve rapid unrestraint of the cell through the pressure reduction of the bladder 210; (4) The cell liquid-cooled restraint tray of this utility model can achieve modular design and is easy to manufacture, effectively reducing production costs.
[0030] Please see Figures 1 to 2 Furthermore, the cell tray 100 is provided with an inlet manifold 300, which connects to the inlet connectors 223 of the water-cooling plates 220 on both sides; the cell tray 100 is also provided with a return manifold 400, which connects to the outlet connectors 224 of the water-cooling plates 220 on both sides. Thus, the inlet manifold 300 and the return manifold 400 achieve water circulation to fill or drain the sealed cavity to regulate the expansion and contraction of the capsule 210. Water circulation can be completed using only one inlet manifold 300 and one return manifold 400, ensuring efficient filling and draining and reducing structural costs. In this embodiment, the inlet manifold 300 can be positioned above the cell tray 100, and the return manifold 400 can be positioned below the cell tray 100, allowing the temperature-controlled liquid to flow from top to bottom into the capsule 210. Of course, in other embodiments, the inlet manifold 300 can be positioned at the bottom and the return manifold 400 at the top, depending on the actual situation.
[0031] Please see Figures 1 to 2 Furthermore, the two side walls of the liquid inlet manifold 300 are respectively provided with multiple liquid inlet connectors 310, and the multiple liquid inlet connectors 310 are connected one-to-one with the multiple liquid inlet connectors 223 through liquid inlet pipes; the two side walls of the multiple return manifolds 400 are respectively provided with multiple liquid outlet connectors 410, and the multiple liquid outlet connectors 410 are connected one-to-one with the multiple liquid outlet connectors 224 through liquid outlet pipes. Specifically, the external chiller directly supplies water into the liquid inlet manifold 300 and diverts it through the liquid inlet connectors 310 to the sealed cavity inside the water-cooled plates 220 on both sides, thereby improving the liquid inlet efficiency.
[0032] Please see Figures 1 to 2 Furthermore, both the inlet manifold 300 and the return manifold 400 are hollow rods. The front and rear plates of the cell tray 100 are respectively provided with an inlet 120 and an outlet 130. The two ends of the inlet manifold 300 are respectively connected to the inlet 120 on both sides of the cell tray 100, and the two ends of the return manifold 400 are respectively connected to the outlet 130 on both sides of the cell tray 100. Specifically, the hollow design of both the inlet manifold 300 and the return manifold 400 ensures efficient inlet and return. The inlet 120 and outlet 130 are directly provided on the front and rear plates of the cell tray 100, allowing an external chiller to be connected through the inlet 120 and outlet 130. In the modular cell tray 100, there is no need to design a water source on the cell tray 100, simplifying the water circuit and allowing for connection to an external water source via water pipes as needed, increasing usability.
[0033] Please see Figures 5 to 6 Furthermore, the flap 210 is provided with reinforcing ribs 213 on the side facing the water-cooling plate 220. Thus, the reinforcing ribs 213 can improve the structural strength of the flap 210. Furthermore, the groove 221 is rectangular in shape. The flap 210 is directly and sealingly connected to the periphery of the groove 221, and together with the water-cooling plate 220, forms a rectangular sealed cavity, matching the shape of the battery cell in the battery cell tray 100, ensuring complete contact between the flap 210 and the battery cell, guaranteeing restraint and heat dissipation effects.
[0034] Please see Figures 5 to 6 Furthermore, the capsule 210 is made of polyurethane. Thus, the polyurethane capsule 210 has good thermal conductivity and elasticity, allowing it to expand and compress the battery cell 110 to restrain it when the space between the water-cooled plate 220 and the capsule 210 is filled with liquid, while simultaneously exchanging heat with the battery cell 110 through the capsule 210 contact.
[0035] Please see Figures 5 to 6 Furthermore, the liquid cooling assembly 200 also includes a pressure strip for a bladder 210. A connecting frame strip 212 is provided around the periphery of the bladder 210, and the pressure strip for the bladder 210 presses against the connecting frame strip 212 to form the sealed cavity. Specifically, the pressure strip for the bladder 210 can be fixed to the connecting frame strip 212 using bolts, adhesive, or other methods. In this way, the pressure strip for the bladder applies pressure to the connecting frame strip 212 of the bladder 210, pressing the bladder 210 tightly against the water-cooling plate 220, thus forming a sealed cavity between the bladder 210 and the water-cooling plate 220. This ensures the airtightness of inflation or deflation, and guarantees the stability of cell restraint and derestraint.
[0036] Please see Figures 3 to 6 Furthermore, the connecting frame strip 212 is glued to the water-cooling plate 220. Thus, during assembly, the connecting frame strip 212 of the airbag 210 is first glued to the water-cooling plate 220, then the airbag pressure strip is pressed onto the connecting frame strip 212 of the airbag 210, and further assembled and fixed by bolts or other means to ensure the airtightness of the sealed cavity.
[0037] Please see Figures 1 to 2Furthermore, the cell tray 100 is internally provided with multiple mounting strips 140, and each mounting strip 140 has multiple mounting slots 141 formed on the side facing the water-cooling plate 220. The mounting slots 141 between each pair of adjacent rows of mounting strips 140 allow the water-cooling plate 220 to be inserted. Thus, by directly inserting the water-cooling plate 220 into the mounting slots 141 of the mounting strips 140, the process is convenient and quick. The mounting strips 140 improve the assembly efficiency of the water-cooling plate 220, enhance the stability of the assembly structure, and thus ensure the installation stability of the fin 210.
[0038] Please see Figures 1 to 2 Furthermore, the water-cooling plate 220 has limit holes 225 on both sides of its bottom, and the battery cell 110 has limit mounting blocks 150 on both sides. Each limit mounting block 150 has a hook 151 for insertion into the limit hole 225. Specifically, during assembly, after the water-cooling plate 220 is inserted into the mounting slot 141 of the mounting strip 140, the battery cell 110 can be assembled by directly inserting the limit mounting blocks 150 on both sides of the battery cell 110 into the limit holes 225, ensuring the installation stability of the battery cell 110 and improving assembly efficiency.
[0039] The above are merely optional embodiments of this utility model and do not limit the patent scope of this utility model. All equivalent structural transformations made based on the contents of this utility model specification and drawings under the utility model concept, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this utility model.
Claims
1. A liquid-cooled restraint tray for battery cells, characterized in that, The cell liquid-cooled restraint tray includes: A cell tray for holding multiple cells; Multiple liquid cooling components, each of which includes a bladder and a water-cooling plate, wherein the water-cooling plate has a recessed groove, and the periphery of the bladder is sealed to the periphery of the groove of the water-cooling plate to form a deformable sealed cavity, and the water-cooling plate is disposed on the cell tray. The water-cooled plate is provided with a liquid inlet connector and a liquid outlet connector. The liquid inlet connector and the liquid outlet connector are respectively connected to the sealed cavity. The liquid inlet connector can introduce temperature-controlled liquid, which causes the capsule to expand and compress the battery cell and perform heat exchange.
2. The cell liquid-cooled restraint tray as described in claim 1, characterized in that, The cell tray is provided with an inlet manifold, which connects to the inlet connectors of the water-cooling plates on both sides; the cell tray is provided with a return manifold, which connects to the outlet connectors of the water-cooling plates on both sides.
3. The cell liquid-cooled restraint tray as described in claim 2, characterized in that, The inlet manifold is provided with multiple inlet connectors on both sides of its side walls, and the multiple inlet connectors are connected one-to-one to the multiple inlet connectors through inlet pipes; the return manifold is provided with multiple outlet connectors on both sides of its side walls, and the multiple outlet connectors are connected one-to-one to the multiple outlet connectors through outlet pipes.
4. The cell liquid-cooled restraint tray as described in claim 3, characterized in that, Both the inlet manifold and the return manifold are hollow rods. The front and rear plates of the cell tray are respectively provided with an inlet and an outlet. The two ends of the inlet manifold are respectively connected to the inlet on both sides of the cell tray, and the two ends of the return manifold are respectively connected to the outlet on both sides of the cell tray.
5. The cell liquid-cooled restraint tray as described in any one of claims 1 to 4, characterized in that, The capsule has reinforcing ribs on the side facing the water-cooling plate.
6. The cell liquid-cooled restraint tray as described in claim 5, characterized in that, The capsule is made of polyurethane.
7. The cell liquid-cooled restraint tray as described in claim 1, characterized in that, The liquid cooling assembly also includes a bladder strip, and a connecting frame strip is provided around the periphery of the bladder. The bladder strip presses onto the connecting frame strip to form the sealed cavity.
8. The cell liquid-cooled restraint tray as described in claim 7, characterized in that, The connecting frame strip is glued to the water-cooling plate.
9. The cell liquid-cooled restraint tray as described in claim 1, characterized in that, The battery cell tray has multiple mounting strips inside, and the mounting strips have multiple mounting slots on the side facing the water-cooling plate. The mounting slots between each pair of adjacent rows of mounting strips can be used to insert the water-cooling plate.
10. The cell liquid-cooled restraint tray as described in claim 9, characterized in that, Limiting holes are provided on both sides of the bottom of the water-cooling plate, and limiting mounting blocks are provided on both sides of the battery cell. The limiting mounting blocks have hooks for insertion into the limiting holes.