Battery tray

Abstract

The utility model relates to battery formation technical field especially, relates to a kind of battery tray.Battery tray includes battery restraint assembly and support seat, battery restraint assembly is used to restrain clamping battery, battery restraint assembly includes multiple baffle and multiple air bag, baffle at least one side is provided with air bag to be used for clamping battery, baffle is provided with heat dissipation structure;Battery restraint assembly is set to support seat to be supported by support seat.Because baffle is provided with heat dissipation structure, heat generated during battery formation is transferred to baffle, heat is taken away by the heat dissipation structure of baffle, and then the purpose of heat dissipation is achieved, so temperature control effect can be realized.To ensure that battery formation is in the optimum temperature environment, improve formation effect.

Description

Technical Field

[0001] This utility model relates to the field of battery formation technology, and in particular to a battery tray. Background Technology

[0002] After battery manufacturing, the process of activating the positive and negative electrode materials through specific charging and discharging methods to improve the battery's overall performance, including charge / discharge and storage capabilities, is called formation. During formation, lithium salts undergo side reactions with the electrolyte, forming a solid electrolyte interphase (SEI) film on the negative electrode side of the lithium battery. This film prevents further side reactions, thereby reducing the loss of active lithium in the battery. The quality of the SEI significantly impacts the cycle life, initial capacity loss, and rate performance of the lithium battery. However, gases are generated during battery formation, which can affect the quality of the SEI film. Therefore, it is necessary to promptly remove these gases during the formation process.

[0003] During the battery formation process, the battery temperature will rise. If the battery temperature rises too high, exceeding a certain range, it will damage the structure of the already formed SEI film, leading to a decrease in the stability of the SEI film.

[0004] Therefore, there is an urgent need for a battery tray to solve the above-mentioned technical problems. Utility Model Content

[0005] The purpose of this invention is to provide a battery tray that can dissipate heat from the battery during the battery formation process, thereby reducing the battery temperature and protecting the already formed SEI film.

[0006] To achieve this objective, one aspect of this utility model adopts the following technical solution:

[0007] Battery tray, including:

[0008] A battery restraint assembly for restraining and clamping a battery, the battery restraint assembly including multiple separators and multiple airbags, the separators having an airbag on at least one side for clamping the battery, and the separators having a heat dissipation structure;

[0009] A support base, wherein the battery restraint assembly is disposed on the support base and is supported by the support base.

[0010] This utility model has at least the following beneficial effects:

[0011] Because the separator is equipped with a heat dissipation structure, the heat generated during battery formation is transferred to the separator and then carried away by the heat dissipation structure, thus achieving the purpose of heat dissipation and temperature control. This ensures that the battery is in an optimal temperature environment during formation, improving the formation effect. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of this utility model and these drawings without creative effort.

[0013] Figure 1 This is a schematic diagram of the structure of the battery tray provided in an embodiment of the present utility model;

[0014] Figure 2 A first-view structural schematic diagram of a partition with an airbag and a rubber pad provided in an embodiment of this utility model;

[0015] Figure 3 A second-view structural schematic diagram of a partition with an airbag and a rubber pad provided in an embodiment of this utility model;

[0016] Figure 4 A schematic diagram showing the connection between the battery restraint assembly and the cooling medium circulation pipeline provided in this embodiment of the utility model;

[0017] Figure 5 A schematic diagram of the support base provided in an embodiment of this utility model.

[0018] In the picture:

[0019] 1. Battery restraint assembly; 11. Separator; 111. Heat dissipation channel; 112. First side; 113. Second side; 114. Groove; 12. Airbag; 13. Rubber pad; 2. Support base; 21. Base plate; 22. Limiting component; 23. Side plate; 24. Support rod; 3. Cooling medium circulation pipeline; 31. Inlet pipe; 32. Outlet pipe; 4. Regulating valve; 100. Battery. Detailed Implementation

[0020] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0021] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0022] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0023] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0024] After battery manufacturing, a crucial step is the battery formation process. This process involves activating the active materials within the battery through initial charge and discharge cycles, and forming a solid electrolyte interphase (SEI) film (also known as a passivation film) on the surface of the electrode active layer (usually the negative electrode active layer). The SEI film formed on the electrode active layer prevents redox reactions between the active materials and the electrolyte, thus ensuring the battery's electrochemical stability, cycle life, and self-discharge performance.

[0025] However, during battery formation, some gases are generated simultaneously with the formation of the SEI film on the surface of the electrode active layer. These gases are primarily insulating gases (such as hydrocarbon gases). If these gases are not removed in time, they will obstruct the active ion channels, preventing active ions from migrating smoothly to the electrode active layer. This can lead to problems such as black spots and lithium plating on the electrode, affecting the quality of the SEI film formation, the battery formation effect, and ultimately, the battery's electrochemical stability, cycle life, and self-discharge performance. Therefore, it is essential to remove these gases from the battery promptly during the formation process.

[0026] To address this, related technologies typically use battery trays to facilitate the timely venting of gases from the battery during formation. The restraint plates of the battery tray clamp and pressurize the battery to suppress gaps (GAPs) in the electrode assembly, thus allowing gases generated during formation to escape. However, the formation process generates heat, causing the battery temperature to rise. If the temperature rises excessively and exceeds a certain range, it can damage the structure of the already formed SEI film, leading to a decrease in SEI film stability.

[0027] Therefore, some embodiments of this application provide a battery tray that dissipates heat from the separator by setting a heat dissipation structure on the separator. The heat dissipation of the separator can carry away the heat generated by the battery, thereby achieving battery cooling and heat dissipation.

[0028] The battery tray disclosed in this application can be used to dissipate heat from the battery during battery formation. The battery can be a lithium-ion secondary battery, a lithium-ion primary battery, a lithium-sulfur battery, a sodium-lithium-ion battery, a sodium-ion battery, or a magnesium-ion battery, etc. The battery can be cylindrical, flat, cuboid, or other shapes, etc. The battery can be packaged in different ways to form cylindrical batteries, square batteries, or pouch batteries, etc.

[0029] Some embodiments of this application provide a battery tray that can be used to dissipate heat from the battery during battery formation.

[0030] like Figure 1 As shown, the battery tray includes a battery restraint assembly 1 and a support base 2. The battery restraint assembly 1 is used to restrain and clamp the battery 100. The battery restraint assembly 1 includes multiple partitions 11 and multiple airbags 12. At least one side of the partition 11 is provided with an airbag 12 for clamping the battery 100. The partition 11 is provided with a heat dissipation structure. The battery restraint assembly 1 is disposed on the support base 2 and is supported by the support base 2.

[0031] Because the separator 11 is equipped with a heat dissipation structure, the heat generated during the formation of the battery 100 is transferred to the separator 11 and then carried away by the heat dissipation structure, thus achieving the purpose of heat dissipation and temperature control. This ensures that the battery 100 is in an optimal temperature environment during formation, improving the formation effect.

[0032] In some embodiments, such as Figure 2 and Figure 3 As shown, the heat dissipation structure includes heat dissipation channels 111 disposed on the separator 11, and there are multiple heat dissipation channels 111. After the heat generated by the battery 100 during the formation process is transferred to the separator 11, fluid is introduced into the heat dissipation channels 111. During the flow of the fluid in the heat dissipation channels 111, heat exchange, heat transfer and heat radiation occur with the separator 11, thereby reducing the temperature of the separator 11 and increasing the temperature of the fluid, thus achieving the purpose of reducing the temperature of the separator 11.

[0033] Specifically, a single heat dissipation channel 111 extends along the height direction of the separator 11 and penetrates the separator 11. In this way, air directly enters the heat dissipation channel 111 from one end of the battery restraint assembly 1 and comes into contact with the inner wall of the heat dissipation channel 111. It is heated through heat exchange, heat transfer and heat radiation. Then, the fluid flows out of the heat dissipation channel 111 and continuously enters the heat dissipation channel 111 to dissipate heat from the separator 11, thereby reducing the temperature around the battery 100, so that the ambient temperature of the battery 100 can be artificially reduced.

[0034] It should be noted that, along the thickness direction A perpendicular to the partition 11, the ratio of the total area of ​​the heat dissipation channel 111 projected onto the first side surface 112 of the partition 11 to the area of ​​the first side surface 112 is 0.7-0.9. For example, the ratio of the total area of ​​the heat dissipation channel 111 projected onto the first side surface 112 of the partition 11 to the area of ​​the first side surface 112 is 0.7, 0.71, 0.72, 0.73, 0.74, 0.75, 0.76, 0.77, 0.78, 0.79, 0.8, 0.81, 0.82, 0.83, 0.84, 0.85, 0.86, 0.87, 0.88, 0.89, or 0.9, and will not be listed individually in this embodiment. The ratio of the total area of ​​the heat dissipation channel 111 projected onto the first side 112 of the partition 11 to the area of ​​the first side 112 is 0.7, which can achieve heat dissipation of the partition 11 and ensure the overall strength of the partition 11. The ratio of the total area of ​​the heat dissipation channel 111 projected onto the first side 112 of the partition 11 to the area of ​​the first side 112 is 0.9, which can improve the heat dissipation efficiency of the partition 11.

[0035] More specifically, along the thickness direction A perpendicular to the partition 11, the ratio of the total area of ​​the heat dissipation channel 111 projected onto the first side surface 112 of the partition 11 to the area of ​​the first side surface 112 is 0.75-0.85. For example, the ratio of the total area of ​​the heat dissipation channel 111 projected onto the first side surface 112 of the partition 11 to the area of ​​the first side surface 112 is 0.75, 0.76, 0.77, 0.78, 0.79, 0.8, 0.81, 0.82, 0.83, 0.84, or 0.85, and is not specifically limited in this embodiment.

[0036] For example, the heat dissipation channel 111 is a heat dissipation hole provided on the partition 11.

[0037] It should be noted that the airbag 12 has excellent elasticity; it can inflate and deflate. Specifically, the airbag 12 includes a hollow, flexible capsule (somewhat like a balloon, but with better elasticity). By inflating the flexible capsule, it can inflate, and the capsule is not prone to bursting. Conversely, by releasing the gas from the capsule, it can deflate, returning to its original deflated shape. Due to the elasticity of the airbag 12, it is not easy to crush the battery 100's casing or the battery itself when the airbag 12 applies pressure to it.

[0038] When an airbag 12 is provided on one side of the separator 11, that is, an airbag 12 is provided on the first side 112 of the separator 11, the battery 100 is loaded in the clamping space between the airbag 12 and the adjacent separator 11, and a rubber pad 13 is provided on the second side 113 of the separator 11 to contact the battery 100, so that the battery cell of the battery 100 is subjected to force, thereby protecting the battery 100. When airbags 12 are provided on both sides of the separator 11, that is, airbags 12 are provided on both the first side 112 and the second side 113 of the separator 11, the battery 100 can be loaded through the clamping space between two adjacent airbags 12.

[0039] The battery restraint assembly 1 also includes an air supply pipe that connects an external air source to each airbag 12 to transfer gas between the external air source and each airbag 12, thereby enabling the inflation or deflation of the airbags 12. Based on this, when the battery 100 is placed in the clamping space and the battery 100 is in the formation process, the airbags 12 on one or both sides of the battery 100 can be inflated or deflated to adjust the internal air pressure of the airbags 12, so that the airbags 12 have a certain internal air pressure to press against and apply pressure to the battery 100 in contact with them. Based on the elasticity of the airbag 12 itself, the surface of the airbag 12 can tightly and elastically press against the entire side of the battery 100, so that the pressure of the airbag 12 on the battery 100 can be relatively evenly distributed on the entire side of the battery 100. This allows the battery 100 and the cells inside to be subjected to uniform pressure, thereby effectively promoting the timely discharge of gases generated during the formation of the battery 100. This effectively ensures and improves the venting effect during the formation of the battery 100, and effectively reduces the risk of black spots and lithium plating on the electrode due to gas obstructing the active ion channels. This ensures and improves the film formation quality of the SEI film, the formation effect of the battery 100, and the electrochemical stability, cycle life, and self-discharge performance of the battery 100.

[0040] For example, the fluid is an airflow. Therefore, in some embodiments of this application, the battery tray further includes a fan disposed on the support 2 and located below the battery restraint assembly 1.

[0041] It should be noted that the fan is fixed to the support base 2 by bolts and is positioned facing the battery restraint assembly 1. This allows the fan to increase the airflow speed when it is working, thereby increasing the airflow velocity through the heat dissipation channel 111 and accelerating the dissipation of heat.

[0042] By adopting the above solution, the airflow disturbance can be directly introduced into the heat dissipation channel 111 by the fan fixed on the support 2. The fan can increase the airflow and air velocity entering the heat dissipation channel 111, thereby improving the overall heat dissipation effect of the partition 11.

[0043] For example, the fluid is a liquid cooling medium. Therefore, in some embodiments of this application, the battery restraint assembly 1 further includes a cooling medium circulation pipe 3, which is connected to the heat dissipation channel 111, and the cooling medium is used to communicate with an external cooling medium source. The cooling medium can improve the heat dissipation efficiency of the separator 11, and the temperature and flow rate of the cooling medium entering the heat dissipation channel 111 can be controlled according to the ambient temperature around the battery 100.

[0044] For example, the cooling medium can be water or ethylene glycol.

[0045] Specifically, such as Figure 4As shown, the cooling medium circulation pipeline 3 includes an inlet pipe 31 and an outlet pipe 32. One end of the heat dissipation channel 111 is connected to the inlet pipe 31, and the other end of the heat dissipation channel 111 is connected to the outlet pipe 32. The inlet pipe 31 is used to connect to the outlet of an external cooling medium source, and the outlet pipe 32 is used to connect to the inlet of a cooling medium source. One of the two ports of the heat dissipation channel 111 serves as the inlet of the cooling medium, and the other serves as the outlet of the cooling medium. The cooling medium contacts the inner wall of the heat dissipation channel 111 to achieve heat transfer, thereby reducing the temperature of the separator 11. Since the separator 11 absorbs the heat generated by the formation of the battery 100, the temperature reduction of the separator 11 will also reduce the temperature of the battery 100, thus achieving the purpose of removing some of the heat from the battery 100.

[0046] The cooling medium circulation pipeline 3 is a component used to transport the cooling medium. In particular, the interior of the cooling medium circulation pipeline 3 can guide the flow of the cooling medium. The cooling medium circulation pipeline 3 is connected to the heat dissipation channel 111 and to an external cooling medium source. The external cooling medium source can be, but is not limited to, a fluid pump, a liquid storage tank, etc. The driving force that drives the cooling medium to flow in the cooling medium circulation pipeline 3 can come from an external cooling medium source such as a fluid pump.

[0047] Specifically, the inlet pipe 31 is connected to the outlet of the external cooling medium source through the first connecting joint, and the outlet pipe 32 is connected to the outlet of the cooling medium through the second connecting joint. Both ends of the first connecting joint are provided with seals to prevent cooling medium leakage, and both ends of the second connecting joint are provided with seals to prevent cooling medium leakage. By controlling the flow rate of the cooling medium output from the external cooling medium source, the duration of the cooling medium in the heat dissipation channel 111 can be controlled, or the temperature of the cooling medium entering the heat dissipation channel 111 can be controlled by the external cooling medium source, so as to adjust the temperature of the battery 100 according to actual needs.

[0048] In some other embodiments of this application, the battery restraint assembly 1 further includes a regulating valve 4 disposed on the cooling medium circulation pipeline 3, the regulating valve 4 being used to regulate the flow rate of the cooling medium transmitted through the cooling medium circulation pipeline 3.

[0049] It should be noted that the regulating valve 4 is a control valve, that is, a controllable valve including at least one inlet and at least two outlets. The regulating valve 4 is installed on the cooling medium circulation pipeline 3, specifically between the baffle 11 and the external cooling medium source. The regulating valve 4 can regulate the flow rate of the cooling medium transmitted through the cooling medium circulation pipeline 3.

[0050] The regulating valve 4 can be any type of controllable three-way valve. Specifically, the regulating valve 4 can be an automatic regulating valve with an actuator (such as an electric regulating valve) or a manually controlled regulating valve.

[0051] By adopting the above scheme, the flow rate of the cooling medium transmitted through the cooling medium circulation pipeline 3 can be quickly and conveniently adjusted via the regulating valve 4 during the battery 100 formation process. This allows for convenient, quick, and reliable adjustment of the temperature reduction within the heat dissipation channel 111, thereby enabling convenient, quick, and reliable adjustment of the flow rate within the heat dissipation channel 111. In particular, during the battery 100 formation process, as the heat of the battery 100 increases, the heat of the separator 11 also increases. Based on the configuration of this embodiment, the flow rate of the cooling medium can be controlled via the regulating valve 4 as the heat of the separator 11 increases, thereby increasing the total flow rate of the cooling medium entering the heat dissipation channel 111. Thus, based on the regulating valve 4, the flow rate of the cooling medium within the heat dissipation channel 111 becomes controllable, thereby ensuring and improving the cooling effect of the battery tray on the battery 100 during battery 100 formation. This, in turn, improves the formation effect and yield of the battery 100, reduces the formation rework rate, and improves the film quality of the SEI film and the performance of the battery 100.

[0052] The battery tray also includes a controller, which is connected to the fan and is used to control the fan.

[0053] Of course, in some other embodiments of this application, the battery tray also includes a controller connected to the regulating valve 4, which is used to control the regulating valve 4.

[0054] It should be noted that a controller refers to a control device that can process input signals and output control signals.

[0055] The controller can be, but is not limited to, a programmable logic controller (PLC), a single-chip microcomputer, a microcontroller unit (MCU), or a timer program controller (such as a TPC-type timer program controller).

[0056] In some embodiments of this application, the controller is connected to the fan. Specifically, the controller and the fan can be electrically connected or signal-connected, and can be wired or wirelessly connected. The controller can output control signals to the fan to control the flow rate of the airflow output by the fan.

[0057] By adopting the above scheme, the fan can be automatically controlled by the controller during the battery 100 formation process, so that the fan can quickly, automatically and controllably adjust the airflow transmitted through the heat dissipation channel 111. This allows for rapid, reliable, automatic and controllable temperature regulation of the separator 11, thereby ensuring and improving the temperature control effect of the formation system on the battery 100 during the formation process. This, in turn, improves the formation effect, formation yield and formation consistency, saves formation process time, reduces formation rework rate, and improves the film quality of the SEI film and the performance of the battery 100.

[0058] For example, a fan may include an exhaust fan or a suction fan.

[0059] In other embodiments of this application, the controller is connected to the regulating valve 4. Specifically, the controller and the regulating valve 4 can be electrically connected or signal-connected, and can be wired or wirelessly connected. The controller can output a control signal to the regulating valve 4 to control the regulating valve 4 to adjust the flow rate of the cooling medium transmitted in the cooling medium circulation pipeline 3.

[0060] By adopting the above scheme, the regulating valve 4 can be automatically controlled by the controller during the battery 100 formation process, so that the regulating valve 4 can quickly, automatically and controllably adjust the flow rate of the cooling medium transmitted by the cooling medium circulation pipeline 3. This allows for rapid, reliable, automatic and controllable temperature regulation of the separator 11, thereby ensuring and improving the temperature control effect of the formation system on the battery 100 during the formation process. This, in turn, improves the formation effect, formation yield and formation consistency, saves formation process time, reduces formation rework rate, and improves the film quality of the SEI film and the performance of the battery 100.

[0061] Of course, in other possible implementations, the regulating valve 4 can be a manually regulating valve, and the controller can be omitted.

[0062] The battery tray also includes a temperature detector disposed on the separator 11, which is used to detect the temperature of the separator 11.

[0063] It should be noted that the temperature detector is a sensing element capable of detecting the temperature of the partition 11. The temperature detector can be, but is not limited to, a thermometer or temperature sensor. The temperature detector is located on the partition 11, specifically on the side where the airbag 12 is located. The temperature detector can detect the temperature of the partition 11. The regulating valve 4 can be adjusted based on the detection results of the temperature detector.

[0064] By adopting the above scheme, during the formation process of battery 100, the temperature of separator 11 can be detected in real time by a temperature detector. Based on the detection results of the temperature detector, the regulating valve 4 can be adjusted manually or automatically as needed. This allows the regulating valve 4 to quickly, controllably, and accurately adjust the temperature of the cooling medium transmitted through the cooling medium circulation pipeline 3. As a result, the temperature of the heat dissipation channel 111 can be quickly, controllably, timely, and accurately adjusted during the formation process of battery 100. This ensures and improves the temperature control effect of the battery tray on battery 100 during the formation of battery 100, thereby improving the film formation quality of SEI film and the performance of battery 100.

[0065] In some embodiments of this application, the temperature detector is communicatively connected to the controller, which controls the regulating valve 4 based on the detection data from the temperature detector.

[0066] It should be noted that the communication connection between the temperature detector and the controller refers to the connection method by which the temperature detector's detection data can be transmitted to the controller. This connection can be wired or wireless. The controller can receive the detection data from the temperature detector, analyze and process the data, and then output a control signal to the regulating valve 4 to control the regulating valve 4 for adjustment based on the temperature detector's detection data.

[0067] By adopting the above scheme, the temperature of the baffle 11 can be detected in real time by a temperature detector, and the controller can quickly, promptly, and automatically control the regulating valve 4 based on the detection data of the temperature detector. This allows the regulating valve 4 to quickly, promptly, controllably, and accurately adjust the flow rate of the cooling medium transmitted in the cooling medium circulation pipeline 3. In particular, when the gas pressure decreases due to leakage or other reasons, the controller can promptly control the regulating valve 4 based on the detection data of the temperature detector to increase the flow rate of the cooling medium circulation pipeline 3.

[0068] Of course, in other possible implementations, if the controller is omitted, the detection data of the temperature detector can be displayed directly so that the regulating valve 4 can be manually adjusted according to the detection data of the temperature detector.

[0069] In some embodiments of this application, each heat dissipation channel 111 is connected in parallel to the cooling medium circulation pipeline 3.

[0070] It should be noted that each heat dissipation channel 111 is arranged in parallel and is connected to the cooling medium circulation pipeline 3. Specifically, the cooling medium circulation pipeline 3 includes a main pipeline and multiple first branch pipelines. Each first branch pipeline is connected in parallel to the main pipeline, and each first branch pipeline is connected to each heat dissipation channel 111 in a one-to-one correspondence.

[0071] By adopting the above scheme, each heat dissipation channel 111 can be connected in parallel to the cooling medium circulation pipeline 3, so that the cooling medium circulation pipeline 3 can simultaneously fill each heat dissipation channel 111 with cooling medium, making the total amount of cooling medium in the heat dissipation channel 111 consistent. Based on this, the cooling consistency of each separator 11 by the battery tray can be guaranteed and improved, which can improve the formation effect of the battery 100 and reduce the formation rework rate.

[0072] In some embodiments of this application, each heat dissipation channel 111 is connected in series to the cooling medium circulation pipeline 3.

[0073] It should be noted that each heat dissipation channel 111 is connected in series and ultimately connected to the cooling medium circulation pipeline 3. Specifically, the cooling medium circulation pipeline 3 includes a main pipeline and multiple second branch pipelines. Adjacent partitions 11 are connected through the second branch pipelines, and one partition 11 at the beginning or end of the series connection is connected to the main pipeline through the second branch pipeline.

[0074] By adopting the above scheme, each separator 11 can be connected in series to the cooling medium circulation pipe 3, so that the cooling medium circulation pipe 3 can provide cooling medium to the heat dissipation channel 111 of each separator 11, thereby reducing the temperature of each separator 11. Based on this, the temperature of the separator 11 can be reduced, thereby ensuring and improving the formation consistency of each battery 100 by the battery tray, and improving the formation efficiency.

[0075] Of course, in other possible implementations, each partition 11 can be connected in a mixed manner to the cooling medium circulation pipeline 3, where mixed connection means that there are both series and parallel connections.

[0076] like Figure 5 As shown, in some embodiments of this application, the support base 2 includes a base plate 21, at least two limiting members 22 and two side plates 23. The two ends of the base plate 21 are fixedly connected to the two side plates 23 respectively, and the two ends of the limiting members 22 are fixedly connected to the two side plates 23 respectively. The limiting members 22 are located above the base plate 21. The limiting members 22 are used to restrict the movement of the battery 100 in the length direction, and the base plate 21 is used to support the battery 100.

[0077] It should be noted that the base plate 21, the limiting member 22, and the side plate 23 of the support base 2 provide support and limiting for the partition 11. The base plate 21 is mainly used to support the partition 11, while the limiting member 22 is located at both ends of the partition 11 in the length direction to limit the ends of the partition 11. The side plate 23 provides support for the base plate 21 and the limiting member 22. In addition, the side plate 23 also provides limiting for the partition 11 located at the edge to prevent the partition 11 from detaching from the base plate 21 and tipping over during the movement of the battery tray.

[0078] By adopting the above scheme, the support seat 2 can support the partition 11, and the adjacent partition 11 is used to clamp the battery 100. In fact, the support seat 2 is also used to support the battery 100, providing support for the battery 100 during formation, so as to ensure the formation effect of the battery 100.

[0079] In some embodiments of this application, the support base 2 further includes a support rod 24, the two ends of which are fixedly connected to two side plates 23 respectively. The support rod 24 is located above the bottom plate 21. The partition 11 has a groove 114, and the support rod 24 is located in the groove 114 to support the partition 11.

[0080] It should be noted that the support rod 24 provides an installation position for the fan in some embodiments of this application. The support rod 24 is set at a preset distance from the base plate 21, forming an accommodating space between the support rod 24 and the base plate 21. The fan is installed on the base plate 21 and located within the accommodating space, thus placing the fan below the partition 11. When the fan is working, it can directly deliver airflow into the heat dissipation channel 111 to dissipate heat from the partition 11. Multiple fans can be installed within the accommodating space.

[0081] By adopting the above solution, the fan can be accommodated in the space between the support rod 24 and the base plate 21, which serves the purpose of storing the fan and dissipating heat from the separator 11 during the formation of the battery 100, thereby achieving the purpose of dissipating heat from the battery 100 and ensuring the formation effect of the battery 100.

[0082] Furthermore, the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the protection scope of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention, the scope of which is determined by the scope of the appended claims.

Claims

1. A battery tray, characterized in that, include: A battery restraint assembly (1) is used to restrain and clamp a battery (100). The battery restraint assembly (1) includes a plurality of partitions (11) and a plurality of airbags (12). At least one side of each partition (11) is provided with an airbag (12) for clamping the battery (100). The partition (11) is provided with a heat dissipation structure. Support base (2), wherein the battery restraint assembly (1) is disposed on the support base (2) and is supported by the support base (2).

2. The battery tray according to claim 1, characterized in that, The heat dissipation structure includes heat dissipation channels (111) disposed on the partition (11), and the number of heat dissipation channels (111) is multiple.

3. The battery tray according to claim 2, characterized in that, A single heat dissipation channel (111) extends along the height direction of the partition (11) and penetrates the partition (11).

4. The battery tray according to claim 2 or 3, characterized in that, Along the thickness direction perpendicular to the partition (11), the ratio of the total area of ​​the heat dissipation channel (111) projected onto the first side (112) of the partition (11) to the area of ​​the first side (112) is 0.7-0.

9.

5. The battery tray according to claim 4, characterized in that, Along the thickness direction perpendicular to the partition (11), the ratio of the total area of ​​the heat dissipation channel (111) projected onto the first side (112) of the partition (11) to the area of ​​the first side (112) is 0.75-0.

85.

6. The battery tray according to claim 2 or 3, characterized in that, The battery tray also includes a fan, which is disposed on the support base (2) and located below the battery restraint assembly (1).

7. The battery tray according to claim 2 or 3, characterized in that, The battery restraint assembly (1) further includes a cooling medium circulation pipe (3), which is connected to the heat dissipation channel (111), and the cooling medium is used to communicate with an external cooling medium source.

8. The battery tray according to claim 7, characterized in that, The cooling medium circulation pipeline (3) includes an inlet pipe (31) and an outlet pipe (32). One end of the heat dissipation channel (111) is connected to the inlet pipe (31), and the other end of the heat dissipation channel (111) is connected to the outlet pipe (32). The inlet pipe (31) is used to connect to the outlet of an external cooling medium source, and the outlet pipe (32) is used to connect to the inlet of the cooling medium source.

9. The battery tray according to claim 7, characterized in that, Each of the aforementioned heat dissipation channels (111) is connected in parallel to the cooling medium circulation pipeline (3); or, Each of the heat dissipation channels (111) is connected in series to the cooling medium circulation pipeline (3).

10. The battery tray according to claim 7, characterized in that, The battery restraint assembly (1) also includes a regulating valve (4) disposed on the cooling medium circulation pipeline (3), the regulating valve (4) being used to regulate the flow rate of the cooling medium flowing in the cooling medium circulation pipeline (3).

11. The battery tray according to any one of claims 1-3, characterized in that, The battery tray also includes a temperature detector disposed on the separator (11), the temperature detector being used to detect the temperature of the separator (11).

12. The battery tray according to any one of claims 1-3, characterized in that, The support base (2) includes a base plate (21), at least two limiting members (22) and two side plates (23). The two ends of the base plate (21) are fixedly connected to the two side plates (23) respectively. The two ends of the limiting members (22) are fixedly connected to the two side plates (23) respectively. The limiting members (22) are located above the base plate (21). The limiting members (22) are used to restrict the movement of the battery (100) in the length direction. The base plate (21) is used to support the battery (100).

13. The battery tray according to claim 12, characterized in that, The support base (2) also includes a support rod (24), the two ends of which are fixedly connected to the two side plates (23) respectively. The support rod (24) is located above the bottom plate (21). The partition plate (11) has a groove (114), and the support rod (24) is located in the groove (114) to support the partition plate (11).

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