Liquid cooling module, battery system and battery system assembly method

Abstract

The present invention provides a liquid cooling module, a battery system and a battery system assembly method, which belong to the field of new energy battery thermal management technology, including: a guide plate; a liquid cooling plate, a liquid cooling channel is arranged inside the liquid cooling plate, one side of the liquid cooling plate is arranged as an inner side surface and the other side is arranged as an outer side surface, the inner side surface is fitted with an elastic sealing strip, the liquid cooling plate is floatingly connected to the guide plate, and the liquid cooling plate can float to make the outer side surface close to or away from the guide plate; the liquid cooling plate is provided with a plurality of micropores; the beneficial effects of the present invention are: it can prevent the large surface of the battery cell from being scratched by the glue, the liquid cooling plate can adjust the gap between it and the side surface of the battery cell by floating, which solves the disadvantage of the difficulty in placing the battery cell, and the liquid cooling plate can adaptively stick to the battery cell during glue injection, reduce the gap between the two, reduce the amount of glue used and improve the thermal conductivity, and greatly improve production efficiency.

Description

Technical Field

[0001] The present invention belongs to the technical field of thermal management of new energy batteries and relates to a liquid cooling module, a battery system and a battery system assembly method. Background Art

[0002] In fields such as new energy vehicles and energy storage systems, battery cells are often installed in a horizontal stack. For horizontally stacked battery cells, both sides must fit tightly against the liquid cooling plates and be secured with thermally conductive structural adhesive. However, traditional processes typically follow a sequential process of applying adhesive first and then stacking the cells. This involves first placing at least two sets of liquid cooling plates within the battery case, applying thermally conductive structural adhesive to the surfaces of the plates, and finally placing the battery cells between the two plates.

[0003] There are several problems with this approach: when the battery cells are placed in the box, the glue on the liquid cooling plate is easily scraped onto the large surface of the battery cells (i.e., the lower surface), causing local padding. This not only affects the flatness of the battery cells, but also hinders effective heat conduction due to the thermal resistance characteristics of the thermally conductive structural adhesive itself. In addition, in order to ensure that the battery cells can be smoothly placed between the two sets of liquid cooling plates, it is usually necessary to make the distance between the two liquid cooling plates slightly larger than the width of the battery cells, which leads to a large gap between the sides of the battery cells and the liquid cooling plates. Although these gaps can be filled with thermally conductive structural adhesive, excessive use of thermally conductive structural adhesive will reduce the overall thermal conductivity efficiency. In addition, the precise alignment and assembly of the battery cells is difficult, and additional equipment is required to regulate the flow of the adhesive, making the entire production process inefficient and increasing manufacturing costs and time consumption. Summary of the Invention

[0004] The purpose of the present invention is to address the above-mentioned problems existing in the prior art and to propose a liquid cooling module, a battery system and a battery system assembly method.

[0005] The object of the present invention can be achieved through the following technical solutions: A liquid cooling module comprising:

[0006] A guide plate, wherein a glue flow channel is provided on one surface of the guide plate;

[0007] An elastic sealing strip, the elastic sealing strip being installed on a surface of the guide plate, the elastic sealing strip surrounding the area where the glue flow channel is located and forming a dam structure;

[0008] a liquid cooling plate, wherein a liquid cooling channel is provided inside the liquid cooling plate, one side of the liquid cooling plate is provided as an inner side surface and the other side of the liquid cooling plate is provided as an outer side surface, the inner side surface is in contact with the elastic sealing strip, the liquid cooling plate is floatingly connected to the guide plate via the elastic sealing strip, and the liquid cooling plate can float so that the outer side surface approaches or moves away from the guide plate;

[0009] The liquid cooling plate is provided with a plurality of micropores, which penetrate the liquid cooling plate. One end of the micropore is located on the inner side and communicates with the glue flow channel, and the other end of the micropore is located on the outer side. Each of the micropores avoids the liquid cooling flow channel.

[0010] Preferably, a bracket is further included, the other surface of the guide plate is in contact with the bracket, and the guide plate is fixedly connected to the bracket.

[0011] Preferably, the glue flow channel includes a main channel, which extends along the length direction of the guide plate, and the main channel branches out into several branch channels on both sides to form a fishbone structure, and the branch channels are inclined to the main channel, and the branch channels branch out into several thin channels on both sides, and the thin channels are inclined to the branch channels.

[0012] Preferably, the depth of the branch channel is smaller than the depth of the main channel, the depth of the thin channel is smaller than the depth of the branch channel, and the depth of the thin channel gradually decreases from one end where the thin channel connects to the branch channel to the other end.

[0013] Preferably, the guide plate is provided with a rubber inlet pipe and a rubber outlet pipe, the rubber inlet pipe is connected to one end of the main channel, and the rubber outlet pipe is connected to the other end of the main channel.

[0014] Preferably, a glue groove is further provided on one surface of the guide plate, the glue groove surrounds the area where the glue flow channel is located, and the elastic sealing strip is embedded in the glue groove.

[0015] Preferably, the elastic sealing strip is a rubber strip containing carbon nanotubes, and the elastic sealing strip is configured as a pressure-sensitive adaptive elastic member whose hardness increases when under pressure.

[0016] Preferably, a surface of the elastic sealing strip corresponding to the inner side surface is provided with a plurality of deformable protrusions, and each of the protrusions can allow the liquid cooling plate to approach the guide plate through deformation.

[0017] Preferably, the liquid cooling plate includes a flow channel plate and a panel, the flow channel plate is in close contact with the panel and the two are fixedly connected, the liquid cooling flow channel is located between the flow channel plate and the panel, the inner side surface is the surface of the flow channel plate, the outer side surface is the surface of the panel, and the micropores pass through the flow channel plate and the panel.

[0018] Preferably, the guide plate is fixed with a self-clinching screw column, and a nut is provided on the liquid cooling plate. The self-clinching screw column passes through the guide plate and the liquid cooling plate, and the nut is threadedly connected to the self-clinching screw column. The self-clinching screw column is sleeved with a spring, and the two ends of the spring are respectively connected to the nut and the liquid cooling plate, and the spring applies a pre-tightening force to the liquid cooling plate to make it tend toward the guide plate.

[0019] A battery system comprises a box, a battery cell module and at least two liquid cooling modules, wherein the liquid cooling module and the battery cell module are both installed in the box, and the battery cell module is located between two adjacent liquid cooling modules.

[0020] A battery system assembly method, applied to the battery system, comprises the following steps:

[0021] S1: placing the battery cell module between two adjacent liquid cooling modules, and adjusting the liquid cooling plates of the two adjacent liquid cooling modules by floating to allow the battery cell module to be placed;

[0022] S2: After the battery cell module is installed, the thermal conductive structural glue is poured into the glue flow channel, and glue pressure is generated between the guide plate and the liquid cooling plate. The glue pressure pushes the liquid cooling plate toward the battery cell module, thereby making the outer side surface of the liquid cooling plate fit tightly with the side surface of the battery cell module; at the same time, the thermal conductive structural glue seeps out through the micropores to the outer side surface, thereby making the outer side surface bonded to the battery cell module.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] 1. It can prevent the large surface of the battery cell module from being scratched by the glue. The liquid cooling plate can adjust the gap between it and the side of the battery cell module by floating, solving the disadvantage of difficult placement of the battery cell module. During glue injection, the liquid cooling plate can adaptively stick to the battery cell module, reducing the gap between the two, reducing the amount of glue used and improving thermal conductivity, while greatly improving production efficiency.

[0025] 2. After all the battery modules are placed, the thermal conductive structural adhesive is injected into the adhesive flow channel, thereby generating adhesive pressure between the guide plate and the liquid cooling plate. The adhesive pressure pushes the liquid cooling plate away from the guide plate (defined as the positive direction), so that the outer side of the liquid cooling plate is tightly attached to the side of the battery module, eliminating the gap previously reserved for placing the battery module, and making the liquid cooling plate directly contact with the battery module.

[0026] 3. The thermal conductive structural adhesive in the adhesive flow channel seeps out from the outer side along the micropores and flows between the outer side and the side of the battery cell module, thereby bonding the liquid cooling plate and the battery cell module together, and also filling the gap and discharging the air, further improving the heat exchange efficiency.

[0027] 4. The glue flow channel is designed as a fishbone-like microgroove array. The main channel serves as the backbone, while inclined branch channels along the channel rapidly divert the glue to different lateral areas. Each branch channel further distributes the glue to finer points closer to the micropore entrance through inclined fine channels, ensuring uniform flow and distribution of the thermally conductive structural adhesive. This design evenly diffuses the thermally conductive structural adhesive flowing through the main channel through capillary action, while the inclined design of the branch and fine channels limits lateral overflow of the glue.

[0028] 5. When installing the battery cell module, if the gap between the battery cell module and the liquid cooling plate is still insufficient, the liquid cooling plate can be pushed in the negative direction. Each protrusion is squeezed and deformed to allow the liquid cooling plate to float in the negative direction, thereby increasing the distance between the liquid cooling plate and the battery cell module. This effectively absorbs the width tolerance of the battery cell module, ensures that the battery cell module can be installed between the two liquid cooling modules, and prevents the liquid cooling module from squeezing the battery cell module and causing its deformation. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a structural exploded view of the liquid cooling module of the present invention.

[0030] Figure 2 This is an isometric view of the liquid cooling module of the present invention.

[0031] Figure 3 This is a schematic diagram of the state in which a gap is retained between the liquid cooling plate and the battery cell module before glue injection according to the present invention.

[0032] Figure 4 This is a schematic diagram of the state in which the liquid cooling plate and the battery cell module are directly bonded after glue injection according to the present invention.

[0033] Figure 5 Schematic diagram of the structure of the guide plate of the present invention.

[0034] Figure 6 It is a schematic diagram of the back side of the guide plate of the present invention.

[0035] Figure 7 It is a structural schematic diagram of the elastic sealing strip of the present invention.

[0036] Figure 8 It is a structural schematic diagram of the connection between the guide plate and the liquid cooling plate of the present invention.

[0037] Figure 9 Schematic diagram of the structure of the battery system of the present invention.

[0038] Figure 10 This is a schematic diagram of the battery cell module of the present invention being located between two groups of liquid cooling modules.

[0039] Figure 11 Schematic diagram of the internal structure of the liquid cooling plate of the present invention.

[0040] In the figure, 100, guide plate; 110, glue inlet pipe; 120, glue outlet pipe; 130, rivet screw column; 140, glue groove; 200, glue flow channel; 210, main channel; 220, branch flow channel; 230, thin flow channel; 300, elastic sealing strip; 310, bump; 400, liquid cooling plate; 410, inner side; 420, outer side; 430, liquid cooling flow channel; 440, micropore; 450, flow channel plate; 460, panel; 470, nut; 480, spring; 500, bracket; 600, box; 700, battery module. DETAILED DESCRIPTION

[0041] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solutions of the present invention, but the present invention is not limited to these embodiments.

[0042] like Figures 1 to 11 As shown, a liquid cooling module includes:

[0043] The guide plate 100 has a surface provided with a glue flow channel 200;

[0044] An elastic sealing strip 300 is installed on a surface of the guide plate 100. The elastic sealing strip 300 surrounds the area where the glue flow channel 200 is located and forms a dam structure;

[0045] Liquid cooling plate 400, with a liquid cooling channel 430 disposed therein. One side of liquid cooling plate 400 is configured as an inner side surface 410 and the other side is configured as an outer side surface 420. Inner side surface 410 is in contact with elastic sealing strip 300. Liquid cooling plate 400 is connected to guide plate 100 in a floating manner via elastic sealing strip 300. Liquid cooling plate 400 can float to move outer side surface 420 closer to or farther from guide plate 100.

[0046] The liquid cooling plate 400 is provided with a plurality of micropores 440 , which penetrate the liquid cooling plate 400 . One end of the micropore 440 is located on the inner side 410 and communicates with the glue flow channel 200 , and the other end of the micropore 440 is located on the outer side 420 . Each micropore 440 avoids the liquid cooling flow channel 430 .

[0047] The guide plate 100 can guide the flow of thermally conductive structural adhesive through the adhesive flow channel 200. The elastic sealing strip 300 realizes the seal between the liquid cooling plate 400 and the guide plate 100. When the thermally conductive structural adhesive is injected into the adhesive flow channel 200, the dam structure formed by the elastic sealing strip 300 can prevent the adhesive from overflowing. In addition, the elastic sealing strip 300 is located between the liquid cooling plate 400 and the guide plate 100. Through its own elastic deformation, it gives the liquid cooling plate 400 the ability to float relative to the guide plate 100. The liquid cooling plate 400 is a heat dissipation component that is in direct contact with the battery cell module 700. The liquid cooling channel 430 inside the liquid cooling plate 400 is used to circulate coolant (such as water, ethylene glycol mixture, etc.) to achieve active heat dissipation. The outer side surface 420 of the liquid cooling plate 400 can be attached to the battery cell module 700 and bonded together through thermal conductive structural adhesive. The evenly distributed micropores 440 on the liquid cooling plate 400 can allow the thermal conductive structural adhesive in the adhesive flow channel 200 to flow to the outer side surface 420 of the liquid cooling plate 400, and the design of the micropores 440 avoiding the liquid cooling flow channel 430 can avoid cross contamination or structural interference between the thermal conductive structural adhesive and the coolant.

[0048] The floating design of the liquid cooling plate 400 enables it to retract toward the guide plate 100 (defined as the negative direction), increasing the distance between two adjacent groups of liquid cooling modules, thereby effectively absorbing the width tolerance of the battery cell module 700 and ensuring that the battery cell module 700 can be placed between the two groups of liquid cooling modules, thus solving the problem of difficulty in placing the battery cell module 700 or the inability to install the battery cell module 700 due to insufficient space.

[0049] After all the battery modules 700 are placed, the thermal conductive structural glue is injected into the glue flow channel 200, thereby generating glue pressure between the guide plate 100 and the liquid cooling plate 400. The glue pressure pushes the liquid cooling plate 400 away from the guide plate 100 (defined as the positive direction), so that the outer side surface 420 of the liquid cooling plate 400 is tightly attached to the side of the battery module 700, eliminating the gap previously reserved for placing the battery module 700, so that the liquid cooling plate 400 is in direct contact with the battery module 700. Then the thermal conductive structural glue in the glue flow channel 200 seeps out from the outer side surface 420 along the micropores 440 and flows between the outer side surface 420 and the side of the battery module 700, thereby bonding and fixing the liquid cooling plate 400 and the battery module 700 together, and also filling the gap and discharging air, further improving the heat exchange efficiency.

[0050] This liquid cooling module enables a battery cell placement-first, glue injection-later installation process. Because the outer surface 420 of the liquid cooling plate 400 is free of thermally conductive adhesive before the battery cell module 700 is placed, the adhesive prevents the module 700 from being scraped onto its outer surface during downward positioning, achieving zero glue overflow. Furthermore, during the subsequent glue injection process, the thermally conductive adhesive squeezes out air trapped in the gaps, improving adhesion and heat exchange efficiency.

[0051] The process logic of placing cells first and then injecting glue can reduce the difficulty of cell installation and assembly, improve production efficiency and production rhythm, and effectively reduce the difficulty of subsequent maintenance.

[0052] It's important to note that in the traditional "glue-first, then place" design, the thermally conductive structural adhesive scrapes against the large surface of the cell, causing partial elevation of the cell. This, in turn, can lead to lithium deposition due to uneven stress, shortening the cell's lifespan. This design, however, employs a "place first, then glue" process, eliminating the partial elevation of the cell module 700 due to glue overflow, ensuring uniform stress across each cell module 700 and extending its lifespan.

[0053] Furthermore, the liquid cooling plate 400 can adjust its spacing from the sides of the cell modules 700 by floating. This negative movement of the liquid cooling plate 400 solves the problem of difficult placement of the cell modules 700, significantly improving production efficiency. After the cell modules 700 are placed, the pressure generated during glue injection can be used to push the liquid cooling plate 400 in the positive direction, allowing the outer side 420 of the liquid cooling plate 400 to directly mate with the side of the cell modules 700. This brings the liquid cooling plate 400 closer to the cell modules 700, thereby reducing the amount of thermally conductive structural adhesive used. Because thermally conductive structural adhesive is also a thermally resistive material, reducing the gap and the amount of adhesive used can further improve thermal conductivity.

[0054] like Figures 1 to 4 、 Figures 9 and 10 As shown, based on the above embodiment, a bracket 500 is further included, the other surface of the guide plate 100 is in contact with the bracket 500 , and the guide plate 100 is fixedly connected to the bracket 500 .

[0055] The guide plate 100 is fixedly connected to the bracket 500 by screws, and the two ends and the bottom of the bracket 500 are fixedly connected to the battery box 600, thereby ensuring that the entire liquid cooling module can be stably and reliably installed in the battery box 600.

[0056] like Figure 1 、 Figure 5 、 Figure 11 As shown, based on the above embodiment, the glue flow channel 200 includes a main channel 210, which extends along the length direction of the guide plate 100. The main channel 210 branches out into several branch channels 220 on both sides and forms a fishbone structure. The branch channels 220 are inclined to the main channel 210, and the branch channels 220 branch out into several thin channels 230 on both sides. The thin channels 230 are inclined to the branch channels 220.

[0057] The glue flow channel 200 is designed as a fishbone-like microgroove array. The main channel 210 serves as the backbone, while the inclined branch channels 220 along the way quickly divert the glue to different lateral areas. Each branch channel 220 further distributes the glue to finer points closer to the entrance of the micropores 440 through inclined fine channels 230, ensuring uniform flow and distribution of the thermally conductive structural glue. This design evenly diffuses the thermally conductive structural glue flowing through the main channel 210 through capillary action, while the inclined design of the branch channels 220 and fine channels 230 limits lateral overflow of the glue.

[0058] Based on the above embodiment, the depth of the branch channel 220 is less than the depth of the main channel 210, the depth of the thin channel 230 is less than the depth of the branch channel 220, and the depth of the thin channel 230 gradually decreases from one end where the thin channel 230 is connected to the branch channel 220 to the other end.

[0059] A gradient groove depth transition zone is formed between the branch channel 220 and the thin channel 230. As the groove depth of the thin channel 230 gradually decreases, a glue reflux trap is formed, and the overflowed glue automatically flows back to the central area under the action of surface tension.

[0060] In this example, the main channel 210 has a depth of 1 mm and a width of 5 mm; the branch channel 220 has a depth of 0.8 mm and a width of 3 mm; and the thin channel 230 has a depth of 0.3 mm and a width of 1.5 mm.

[0061] like Figure 5 、 Figure 6 As shown, based on the above embodiment, the guide plate 100 is provided with a rubber inlet pipe 110 and a rubber outlet pipe 120 , the rubber inlet pipe 110 is connected to one end of the main channel 210 , and the rubber outlet pipe 120 is connected to the other end of the main channel 210 .

[0062] During glue injection, the thermally conductive structural glue is injected into one end of the main channel 210 through the glue inlet pipe 110. The thermally conductive structural glue then flows along the extension direction of the main channel 210. The thermally conductive structural glue on the main channel 210 flows to each branch channel 220 and the small channel 230 through capillary action, and then fills the entire glue flow channel 200. By controlling the injection time and speed, after the thermally conductive structural glue fills the gaps, the excess thermally conductive structural glue flows out of the glue outlet pipe 120.

[0063] like Figure 1 、 Figure 5 As shown, a surface of the guide plate 100 is further provided with a glue groove 140, which surrounds the area where the glue flow channel 200 is located, and the elastic sealing strip 300 is embedded in the glue groove 140. The glue groove 140 is used to limit the elastic sealing strip 300 and restrict the elastic sealing strip 300 from moving on the surface of the guide plate 100.

[0064] like Figure 7 As shown, based on the above embodiment, the elastic sealing strip 300 is a rubber strip containing carbon nanotubes (CNTs), and the elastic sealing strip 300 is configured as a pressure-sensitive adaptive elastic member whose hardness increases when under pressure.

[0065] The elastic sealing strip 300 ensures sealing while achieving adaptive pressure response. The rubber strip (such as silicone rubber) provides basic elasticity and sealing properties. Carbon nanotubes, which account for 5%-8%, impart pressure sensitivity to the rubber strip, increasing its hardness when under pressure, thereby improving its overall shear strength.

[0066] like Figure 3 、 Figure 4 、 Figure 7 As shown, based on the above embodiment, a plurality of deformable protrusions 310 are provided on a side of the elastic sealing strip 300 corresponding to the inner side surface 410 , and each protrusion 310 can allow the liquid cooling plate 400 to approach the guide plate 100 through deformation.

[0067] Each protrusion 310 can impart additional negative floating travel to the liquid cooling plate 400 through its own deformation. In this embodiment, the guide plate 100 and the liquid cooling plate 400 maintain a certain pre-tightening force, so that the liquid cooling plate 400 is pre-positioned close to the guide plate 100, while ensuring that each protrusion 310 is not compressed. When the battery cell module 700 is installed, if the gap between the battery cell module 700 and the liquid cooling plate 400 is still insufficient, the liquid cooling plate 400 can be pushed to move in the negative direction, and each protrusion 310 is squeezed and deformed to allow the liquid cooling plate 400 to float in the negative direction, thereby increasing the distance between the liquid cooling plate 400 and the battery cell module 700, thereby effectively absorbing the width tolerance of the battery cell module 700, ensuring that the battery cell module 700 can be installed between the two liquid cooling modules, and preventing the liquid cooling module from squeezing the battery cell module 700 and causing its deformation.

[0068] like Figure 3 、 Figure 4 、 Figure 8 、 Figure 11 As shown, based on the above embodiment, the liquid cooling plate 400 includes a flow channel plate 450 and a panel 460. The flow channel plate 450 is tightly attached to the panel 460 and the two are fixedly connected. The liquid cooling channel 430 is located between the flow channel plate 450 and the panel 460. The inner side surface 410 is the surface of the flow channel plate 450, the outer side surface 420 is the surface of the panel 460, and the micropores 440 pass through the flow channel plate 450 and the panel 460.

[0069] The surface where the flow plate 450 joins the faceplate 460 is engraved with grooves for the liquid-cooling flow channel 430. The flow plate 450 and faceplate 460 are tightly attached together and secured together by brazing, friction welding, stir welding, or other methods, forming a single unit. This seals the liquid-cooling flow channel 430 between the two plates. Faceplate 460 is provided with a coolant inlet and outlet, each communicating with the ends of the liquid-cooling flow channel 430.

[0070] like Figure 1 、 Figure 3 、 Figure 4 、 Figures 8 to 10 As shown, on the basis of the above embodiment, the guide plate 100 is fixedly provided with a self-clinching screw column 130, and a nut 470 is provided on the liquid cooling plate 400. The self-clinching screw column 130 passes through the guide plate 100 and the liquid cooling plate 400, and the nut 470 is threadedly connected to the self-clinching screw column 130. The self-clinching screw column 130 is provided with a spring 480, and the two ends of the spring 480 are respectively in contact with the nut 470 and the liquid cooling plate 400, and the spring 480 applies a pre-tightening force to the liquid cooling plate 400 to make it tend toward the guide plate 100.

[0071] The self-clinching screws 130 pass through the liquid cooling plate 400 and the guide plate 100, acting as a limiting guide, ensuring that the liquid cooling plate 400 can only float along the axial direction of the self-clinching screws 130. The springs 480 push the liquid cooling plate 400 toward the guide plate 100, maintaining a pre-tightened state between the liquid cooling plate 400 and the guide plate 100. This ensures that in the initial state of the liquid cooling module, the liquid cooling plate 400 is in a retracted position, facilitating the installation of the battery cell module 700. In addition, there are at least four self-clinching screws 130, distributed at the four corners of the liquid cooling plate 400 and the guide plate 100, ensuring the stability of the liquid cooling plate 400 during stress and movement.

[0072] like Figures 1 to 11 As shown, a battery system includes a box body 600, a battery cell module 700 and at least two liquid cooling modules. The liquid cooling module and the battery cell module 700 are both installed in the box body 600, and the battery cell module 700 is located between two adjacent liquid cooling modules.

[0073] like Figures 1 to 11 As shown, a battery system assembly method, applied to a battery system, includes the following steps:

[0074] S1: Place the battery cell module 700 between two adjacent liquid cooling modules. The liquid cooling plates 400 of the two adjacent liquid cooling modules are adjusted by floating to allow the battery cell module 700 to be placed therein.

[0075] S2: After the battery cell module 700 is installed, the thermal conductive structural adhesive is poured into the adhesive flow channel 200. Glue pressure is generated between the guide plate 100 and the liquid cooling plate 400. The glue pressure pushes the liquid cooling plate 400 toward the battery cell module 700, thereby making the outer side surface 420 of the liquid cooling plate 400 fit tightly with the side surface of the battery cell module 700. At the same time, the thermal conductive structural adhesive seeps out through the micropores 440 to the outer side surface 420, thereby making the outer side surface 420 bonded to the battery cell module 700.

[0076] Specifically, during battery system assembly, the liquid cooling module bracket 500 is installed within the housing 600, ensuring that the sides and bottom of the bracket 500 are securely connected to the housing 600. A gap of 0.5mm-1.2mm is left between the outer side 420 of the liquid cooling plate 400 of the liquid cooling module and the preset position on the side of the cell module 700. The cell module 700 is then placed between two adjacent liquid cooling modules. If the width of the cell module 700 is too large, the liquid cooling plate 400 will be squeezed, causing it to float negatively, thereby absorbing dimensional tolerances. After each cell module 700 is installed, thermally conductive structural adhesive is injected into the main channel 210 of the guide plate 100 through the adhesive inlet pipe 110. The adhesive is evenly spread along the herringbone-shaped flow channel. Simultaneously, the adhesive pressure pushes the liquid cooling plate 400 to overcome the elastic force of the spring 480, causing it to float positively (away from the guide plate 100). The outer side 420 of the liquid cooling plate 400 directly aligns with the side of the cell module 700, eliminating the required installation gap. The thermal conductive structural adhesive penetrates through the micropores 440 to the outer side surface 420 and fills the microscopic gaps between the battery cell module 700 and the liquid cooling plate 400. After the thermal conductive structural adhesive is cured, the liquid cooling plate 400 and the battery cell module 700 are fixed together, thereby completing the assembly.

[0077] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship and movement status of various components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0078] In addition, terms such as "first," "second," and "an" in the present invention are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features indicated. Therefore, features specified as "first" or "second" may explicitly or implicitly include at least one of such features.

[0079] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixed", etc. should be understood in a broad sense. For example, "fixed" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly specified and limited.

[0080] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in this field can implement it. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

Claims

1. A liquid cooling module, characterized in that: include: A guide plate (100), wherein a surface of the guide plate (100) is provided with a glue flow channel (200); an elastic sealing strip (300), the elastic sealing strip (300) being mounted on a surface of the guide plate (100), the elastic sealing strip (300) surrounding the area where the glue flow channel (200) is located and forming a dam structure; A liquid cooling plate (400), wherein a liquid cooling channel (430) is provided inside the liquid cooling plate (400), one side of the liquid cooling plate (400) is provided as an inner side surface (410) and the other side is provided as an outer side surface (420), the inner side surface (410) is in contact with the elastic sealing strip (300), the liquid cooling plate (400) is connected to the guide plate (100) in a floating manner via the elastic sealing strip (300), and the liquid cooling plate (400) can float so that the outer side surface (420) approaches or moves away from the guide plate (100); The liquid cooling plate (400) is provided with a plurality of micropores (440), wherein the micropores (440) pass through the liquid cooling plate (400), one end of the micropores (440) is located on the inner side surface (410) and is connected to the glue flow channel (200), and the other end of the micropores (440) is located on the outer side surface (420), and each of the micropores (440) avoids the liquid cooling flow channel (430).

2. The liquid cooling module according to claim 1, wherein: It also includes a bracket (500), the other surface of the guide plate (100) is in contact with the bracket (500), and the guide plate (100) is fixedly connected to the bracket (500).

3. The liquid cooling module according to claim 1, wherein: The glue flow channel (200) comprises a main flow channel (210), the main flow channel (210) extending along the length direction of the guide plate (100), the main flow channel (210) branching out into a plurality of branch flow channels (220) on both sides to form a fishbone-like structure, the branch flow channels (220) being inclined relative to the main flow channel (210), the branch flow channels (220) branching out into a plurality of thin flow channels (230) on both sides, the thin flow channels (230) being inclined relative to the branch flow channels (220).

4. The liquid cooling module according to claim 3, wherein: The depth of the branch channel (220) is less than the depth of the main channel (210), the depth of the thin channel (230) is less than the depth of the branch channel (220), and the depth of the thin channel (230) gradually decreases from one end where the thin channel (230) is connected to the branch channel (220) to the other end.

5. The liquid cooling module according to claim 3, wherein: The guide plate (100) is provided with a rubber inlet pipe (110) and a rubber outlet pipe (120), wherein the rubber inlet pipe (110) is connected to one end of the main channel (210), and the rubber outlet pipe (120) is connected to the other end of the main channel (210).

6. The liquid cooling module according to claim 1, wherein: A glue groove (140) is further provided on one surface of the guide plate (100), the glue groove (140) surrounds the area where the glue flow channel (200) is located, and the elastic sealing strip (300) is embedded in the glue groove (140).

7. The liquid cooling module according to claim 1, wherein: The elastic sealing strip (300) is a rubber strip containing carbon nanotubes, and the elastic sealing strip (300) is configured as a pressure-sensitive adaptive elastic member whose hardness increases when under pressure.

8. The liquid cooling module according to claim 7, wherein: A plurality of deformable protrusions (310) are provided on a side of the elastic sealing strip (300) corresponding to the inner side surface (410), and each of the protrusions (310) can allow the liquid cooling plate (400) to approach the guide plate (100) through deformation.

9. The liquid cooling module according to claim 1, wherein: The liquid cooling plate (400) includes a flow channel plate (450) and a panel (460), wherein the flow channel plate (450) is in close contact with the panel (460) and the two are fixedly connected, the liquid cooling channel (430) is located between the flow channel plate (450) and the panel (460), the inner side surface (410) is the surface of the flow channel plate (450), the outer side surface (420) is the surface of the panel (460), and the micropores (440) penetrate the flow channel plate (450) and the panel (460).

10. The liquid cooling module according to claim 1 or 9, characterized in that: The guide plate (100) is fixedly provided with a pressure riveting screw column (130), and the liquid cooling plate (400) is provided with a nut (470), the pressure riveting screw column (130) passes through the guide plate (100) and the liquid cooling plate (400), the nut (470) is threadedly connected to the pressure riveting screw column (130), and the pressure riveting screw column (130) is sleeved with a spring (480), and the two ends of the spring (480) are respectively in contact with the nut (470) and the liquid cooling plate (400), and the spring (480) applies a pre-tightening force to the liquid cooling plate (400) to make it tend toward the guide plate (100).

11. A battery system, characterized in that: The invention comprises a box (600), a battery cell module (700) and at least two liquid cooling modules according to any one of claims 1 to 10, wherein the liquid cooling module and the battery cell module (700) are both installed in the box (600), and the battery cell module (700) is located between two adjacent liquid cooling modules.

12. A battery system assembly method, characterized in that: The battery system according to claim 11 comprises the following steps: S1: placing a battery cell module (700) between two adjacent liquid cooling modules, and adjusting the liquid cooling plates (400) of the two adjacent liquid cooling modules by floating to allow the battery cell module (700) to be placed therein; S2: After the battery module (700) is installed, heat-conducting structural glue is poured into the glue flow channel (200), and glue pressure is generated between the guide plate (100) and the liquid cooling plate (400). The glue pressure pushes the liquid cooling plate (400) toward the battery module (700), thereby making the outer side surface (420) of the liquid cooling plate (400) closely fit with the side surface of the battery module (700); at the same time, the heat-conducting structural glue seeps out to the outer side surface (420) through the micropores (440), thereby making the outer side surface (420) bonded to the battery module (700).

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