A battery module and a battery pack

Abstract

The utility model provides a kind of battery module and battery pack, battery module includes loading box and limit piece, loading box is used to load electric core;Limit piece is set in loading box, for fixing electric core;Loading box and limit piece are connected to form glue channel, for accommodating glue, to utilize glue to fix limit piece with the loading box;When assembling, the fixation of electric core is realized by the connection of limit piece and loading box, and glue channel for accommodating glue is formed after loading box and limit piece are connected, therefore, after electric core is assembled into loading box, limit piece and loading box are directly installed, glue is finally injected into glue channel, without waiting for the solidification process of glue, long waiting process is avoided, and there is only one glue injection action, improve the efficiency of production assembly;Electric core is fixed by the connection of limit piece and loading box, can reduce the amount of glue while also ensuring the stability of electric core connected in loading box.

Description

Technical Field

[0001] This utility model relates to the field of lithium battery technology, specifically to a battery module and a battery pack. Background Technology

[0002] In related technologies, battery modules typically consist of battery cells, a casing, a cover, and other materials. The battery cells and casing are bonded together with adhesive. During assembly, adhesive is applied to the inside of the casing before the battery cells are placed inside. To prevent the battery cells from shifting, the adhesive must be fully cured before the other materials can be installed, affecting the production cycle. Adhesive also needs to be applied to the casing to secure it to the cover. Therefore, the assembly process of battery modules requires two adhesive application steps, and the waiting time for the adhesive to cure is relatively long, affecting production efficiency.

[0003] Furthermore, considering factors such as the manufacturing process and safety of the battery cell, the outer periphery of the metal casing of the battery cell is often wrapped with a plastic film to ensure that the battery cell is insulated from the outside world and avoids harm to the human body. However, in related technologies, the brackets bond the plastic film around the battery cell to the casing, resulting in poor stability of the battery cell installation. In order to ensure the reliability of the connection between the battery cell and the casing as much as possible, the glue needs to cover at least half of the entire battery cell shape, resulting in a large amount of glue used and high production costs. Utility Model Content

[0004] The embodiments of this utility model provide a battery module and a battery pack, which can improve the technical problems of low production efficiency and high production cost in the battery module assembly process.

[0005] In a first aspect, embodiments of the present invention provide a battery module, comprising:

[0006] Loading box, used to load battery cells; and,

[0007] A limiting component is provided inside the loading box to fix the battery cell;

[0008] The loading box and the limiting member are connected to form an adhesive channel for containing adhesive, so as to fix the limiting member to the loading box using the adhesive.

[0009] In one embodiment, the loading box is provided with a plurality of mounting seats, which are spaced apart. The mounting seats are used to mount the battery cells. The limiting member is fastened to the plurality of mounting seats, and the glue channel is at least partially located between the limiting member and the mounting seats.

[0010] In one embodiment, the glue channel includes multiple vertical channels and multiple horizontal channels. The multiple vertical channels are disposed on the two side walls inside the loading box, and the multiple horizontal channels are disposed between two adjacent mounting seats or between the mounting seats and the loading box. Each pair of opposite vertical channels is connected to its corresponding horizontal channel.

[0011] In one embodiment, the mounting base has a first groove with an upward opening, the limiting member can cover the first groove, and a transverse channel is formed between the limiting member and the mounting base.

[0012] In one embodiment, the vertical channel is formed after the limiting member and the loading box are connected; or, the vertical channel is formed by hollowing out a portion of the inner sidewall of the loading box.

[0013] In one embodiment, the mounting base is provided with a first slot for fixing the first pole of the first end of the battery cell, and the limiting member is provided with a second slot for fixing the second pole of the second end of the battery cell, the first slot and the second slot being arranged opposite to each other.

[0014] In one embodiment, the loading box includes a box body and a box lid, the glue channel is at least partially located between the box body and the box lid, and is capable of fixing the box body and the box lid, the box body being fixedly connected to the limiting member by the glue.

[0015] In one embodiment, the glue channel includes a top channel, the box body is provided with an upward-opening second groove, the box cover can cover the second groove, and the top channel is formed after the box body and the box cover are connected.

[0016] In one embodiment, the glue channel further includes multiple vertical channels and multiple horizontal channels. The multiple vertical channels are disposed on the two side walls inside the housing, and the multiple horizontal channels are disposed between two adjacent mounting seats or between the mounting seats and the housing. The lower ends of two opposing vertical channels are connected to their corresponding horizontal channels, and the upper ends of the vertical channels are connected to the top channel.

[0017] In one embodiment, the loading box is provided with a liquid injection port, which is connected to the glue channel.

[0018] In one embodiment, at least two injection ports are provided, and the two injection ports are respectively located on both sides of the loading box.

[0019] In one embodiment, the lid has multiple inner ribs on one side facing the box body, and all of the inner ribs abut against the surface of the limiting member.

[0020] Secondly, embodiments of this utility model provide a battery pack, including the aforementioned battery module.

[0021] The beneficial effects of the embodiments of this utility model are as follows:

[0022] During assembly, the battery cell is fixed by connecting the limiting component to the loading box. The connection between the loading box and the limiting component forms an adhesive channel for holding the adhesive. Therefore, after the battery cell is assembled into the loading box, the limiting component and the loading box are directly installed, and finally the adhesive is injected into the adhesive channel. Only one injection action is needed to fix the battery cell in the loading box. Furthermore, because the adhesive channel is set in the loading box, the adhesive will automatically spread along the adhesive channel until it fills the entire adhesive channel after injection. Not only will it not overflow, but there is also no need to wait for the adhesive to cure, avoiding a long waiting process. Moreover, since there is only one injection action, the efficiency of production assembly is improved.

[0023] Furthermore, in this invention, the battery cell is not directly glued to the loading box, but is fixed by connecting it to the loading box through a limiting component. This reduces the amount of glue used while ensuring the stability of the battery cell connected to the loading box.

[0024] In the embodiments of this utility model, production efficiency can be improved and glue consumption can be reduced by applying glue in a single injection, thereby improving the technical problems of low production efficiency and high production cost. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments 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 these drawings without creative effort.

[0026] Figure 1 This is a three-dimensional schematic diagram of a battery module provided in an embodiment of this utility model;

[0027] Figure 2 This is a first cross-sectional view of a battery module provided in an embodiment of the present invention;

[0028] Figure 3 This is a second cross-sectional view of a battery module provided in an embodiment of the present invention;

[0029] Figure 4 This is a third cross-sectional view of a battery module provided in an embodiment of this utility model;

[0030] Figure 5 This is an exploded view of a battery module provided in an embodiment of this utility model;

[0031] Figure 6 This is an exploded view of a battery module from another perspective, provided by an embodiment of this utility model;

[0032] Figure 7 This is a schematic diagram of the flow direction of the glue channel in a battery module according to an embodiment of this utility model.

[0033] Figure Labels

[0034] 1. Battery module;

[0035] 100. Loading box; 101. Mounting base; 1011. First bayonet; 1012. First groove; 102. Box body; 1021. Second groove; 103. Box cover; 104. Liquid inlet; 105. Inner rib;

[0036] 200. Limiting component; 201. Second bayonet;

[0037] 300. Glue channel; 301. Vertical channel; 302. Horizontal channel; 303. Top channel;

[0038] 400, Battery cell; 401, First terminal; 402, Second terminal;

[0039] 500, BMS control module;

[0040] 600, CCS module. Detailed Implementation

[0041] 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 skilled in the art without creative effort are within the scope of protection of the present utility model. In addition, it should be understood that the specific embodiments described herein are only for illustration and explanation of the present utility model and are not intended to limit the present utility model. In the present utility model, unless otherwise stated, directional terms such as "upper" and "lower" generally refer to the upper and lower positions of the device in actual use or operation, specifically the drawing directions in the accompanying drawings; while "inner" and "outer" refer to the outline of the device.

[0042] Reference Figure 1 and Figure 2 As shown, this application provides a battery module 1, including a loading box 100 and a limiting member 200;

[0043] Loading box 100 is used to load battery cell 400; and,

[0044] The limiting member 200 is disposed inside the loading box 100 for fixing the battery cell 400;

[0045] Wherein, the loading box 100 and the limiting member 200 are connected to form an adhesive channel 300, which is used to contain adhesive so as to fix the limiting member 200 to the loading box 100 using the adhesive.

[0046] During assembly, the battery cell 400 is fixed by connecting the limiting member 200 to the loading box 100. After the loading box 100 and the limiting member 200 are connected, an adhesive channel 300 is formed to hold the adhesive. Therefore, after the battery cell 400 is assembled into the loading box 100, the limiting member 200 and the loading box 100 are directly installed, and finally the adhesive is injected into the adhesive channel 300. Only one injection action is needed to fix the battery cell 400 in the loading box 100. Since the adhesive channel 300 is set in the loading box 100, the adhesive will automatically spread along the adhesive channel 300 until it fills the entire adhesive channel 300 after injection. Not only will it not overflow, but there is also no need to wait for the adhesive to cure, avoiding a long waiting process and improving the efficiency of production assembly.

[0047] Furthermore, in this invention, the battery cell 400 is not directly bonded to the loading box 100, but is fixed by the connection between the limiting member 200 and the loading box 100. This can reduce the amount of glue used while ensuring the stability of the battery cell 400 connected to the loading box 100.

[0048] In the embodiments of this utility model, production efficiency can be improved and glue consumption can be reduced by applying glue in a single injection, thereby improving the technical problems of low production efficiency and high production cost.

[0049] In some embodiments, refer to Figures 2 to 4 As shown, the loading box 100 is provided with a plurality of mounting seats 101, which are spaced apart. The mounting seats 101 are used to mount the battery cell 400. The limiting member 200 is fastened to the plurality of mounting seats 101, and the adhesive channel 300 is at least partially located between the limiting member 200 and the mounting seats 101. In this embodiment, the mounting seat 101 is arc-shaped to mount the cylindrical battery cell 400, and the mounting seat 101 can at least wrap around half of the outer periphery of the battery cell 400, thereby ensuring the installation of the battery cell 400.

[0050] In some embodiments, refer to Figure 5As shown, the adhesive channel 300 includes multiple vertical channels 301 and multiple horizontal channels 302. The multiple vertical channels 301 are disposed on the two side walls inside the loading box 100, and the multiple horizontal channels 302 are disposed between two adjacent mounting seats 101 or between the mounting seat 101 and the loading box 100. Each pair of opposing vertical channels 301 communicates with its corresponding horizontal channel 302. Accordingly, the connection points between the four side walls of the loading box 100 and the limiting member 200 are all covered with adhesive, thereby ensuring the reliability of the connection between the limiting member 200 and the loading box 100. Furthermore, the adhesive does not completely cover the side walls of the loading box 100, avoiding excessive adhesive waste and preventing adhesive from overflowing onto other components, thus ensuring the normal operation of the battery module 1.

[0051] In some embodiments, the mounting base 101 has an upward-facing first groove 1012, and the limiting member 200 can cover the first groove 1012, forming the transverse channel 302 between the limiting member 200 and the mounting base 101. Therefore, it is not necessary to set a channel separately in the loading box 100, and the coverage area of ​​the adhesive can be limited by the cooperation between the limiting member 200 and the mounting base 101, reducing costs, preventing adhesive from flowing into other parts, and ensuring the connection effect between the limiting member 200 and the mounting base 101.

[0052] In some embodiments, the vertical channel 301 is formed after the limiting member 200 and the loading box 100 are connected; or, the vertical channel 301 is formed by hollowing out a portion of the inner sidewall of the loading box 100.

[0053] In some embodiments, refer to Figure 5 As shown, there are four mounting bases 101, five horizontal channels 302, and ten vertical channels 301. Of course, in other embodiments, the number of mounting bases 101 can be set according to the actual number of 400 battery cells to be installed, and the horizontal channels 302 and vertical channels 301 can be adjusted accordingly based on the actual number of mounting bases 101.

[0054] In some embodiments, the mounting base 101 is provided with a first latch 1011 for fixing the first terminal 401 of the battery cell 400, and the limiting member 200 is provided with a latch for fixing the second terminal 402 of the battery cell 400. The first latch 1011 and the second latch 201 are arranged opposite to each other. Therefore, when the limiting member 200 and the mounting base 101 are connected, the first latch 1011 can fix the first terminal 401, and the second latch 201 can fix the second terminal 402, thereby fixing the limiting member 200 from both ends of the battery cell 400, ensuring the fixing effect of the limiting member 200 on the battery cell 400. That is, no glue is needed to ensure the connection stability between the battery cell 400 and the loading box 100, and the amount of glue used can also be reduced, thus reducing production and assembly costs.

[0055] In some embodiments, the loading box 100 includes a box body 102 and a box cover 103. The glue channel 300 is at least partially located between the box body 102 and the box cover 103, and can fix the box body 102 and the box cover 103. The box body 102 is fixedly connected to the limiting member 200 by the glue. In this embodiment, the glue channel 300 is also provided between the box body 102 and the box cover 103 support. Therefore, the glue channel 300 is partially located between the box body 102 and the box cover 103. Through a single glue injection action, the glue can not only cover the space between the limiting member 200 and the box body 102, but also cover the space between the box body 102 and the box cover 103. This enables the battery cell 400 to be fixed inside the box body 102, and also enables the connection between the box body 102 and the box cover 103, resulting in high module assembly efficiency.

[0056] In some embodiments, the glue channel 300 includes a top channel 303, the box body 102 is provided with an upward-opening second groove 1021, the box cover 103 can cover the second groove 1021, and the top channel 303 is formed after the box body 102 and the box cover 103 are connected.

[0057] In some embodiments, the glue channel includes a plurality of vertical channels 301 and a plurality of horizontal channels 302. The plurality of vertical channels 301 are disposed on the two side walls inside the housing 102, and the plurality of horizontal channels 302 are disposed between two adjacent mounting seats 101 or between the mounting seat 101 and the housing 102. The lower ends of two opposing vertical channels 301 are connected to their corresponding horizontal channels 302, and the upper ends of the vertical channels 301 are connected to the top channel 303.

[0058] In some embodiments, for the convenience of glue injection, the loading box 100 is provided with a liquid injection port 104, which is connected to the glue channel 300.

[0059] In some embodiments, in order to accelerate the glue injection efficiency, at least two injection ports 104 are provided, and the two injection ports 104 are respectively located on both sides of the loading box 100. Accordingly, the glue can flow quickly from both directions until it spreads into all the glue channels 300, resulting in high glue injection efficiency.

[0060] In other embodiments, the number of injection ports 104 may be appropriately increased or decreased according to actual usage needs.

[0061] It should also be noted that, referring to Figure 7 As shown, during the assembly process, glue is injected into the glue channel 300 through the injection port 104. Due to the fluidity of the glue, it flows along the glue channel 300. When the glue fills the top channel 303, the glue flows downward from the top channel 303 into the horizontal channel 302, and then upward into the other vertical channel 301 until the glue fills the entire glue channel 300. The glue channel design also prevents glue from overflowing onto other components, thus preventing damage to them, ensuring the connection stability of the module, and guaranteeing the normal use of the module.

[0062] In some embodiments, refer to Figure 6 As shown, the lid 103 has multiple inner ribs 105 on the side facing the body 102, and all of the inner ribs 105 abut against the surface of the limiting member 200. During assembly, after glue is injected into the glue channel 300, the surface of the body 102 is pressed down by a clamping fixture. Due to the inner ribs 105, the limiting member 200 is pressed downwards, ensuring a tight connection between the limiting member 200 and the body 102, guaranteeing the adhesive bonding effect, and thus ensuring the connection stability after module assembly.

[0063] Understandably, referring to Figure 5 As shown, in the specific assembly process, a battery module 1 also includes a BMS control module 500, a CCS module 600, or other components. During installation, the battery cell 400 is first placed into the mounting base 101, then the BMS control module 500, the CCS module 600, or other components are placed in, and finally the cover 103 is closed. Glue is then injected into the glue injection port using a glue injection device. Therefore, only one glue injection action is needed to complete the module assembly without affecting the installation of other components, ensuring the efficiency of module assembly, reducing the amount of glue used, and lowering production costs. At the same time, the connection stability of the assembly within the module is strong and the reliability is high.

[0064] Of course, additional components can be installed as needed during the assembly process, but this does not affect the number of times the adhesive can be applied. The adhesive is simply applied after all components have been installed. Therefore, regardless of the number of components required in battery module 1, only one adhesive application is needed, ensuring high production efficiency during battery module 1 assembly, reducing adhesive usage, and lowering production costs.

[0065] Secondly, this application also provides a battery pack, which includes a battery module 1.

[0066] This battery pack possesses all the beneficial effects of the aforementioned battery module 1:

[0067] During assembly, the battery cell 400 is fixed by connecting the limiting member 200 to the loading box 100. After the loading box 100 and the limiting member 200 are connected, an adhesive channel 300 is formed to hold the adhesive. Therefore, after the battery cell 400 is assembled into the loading box 100, the limiting member 200 and the box cover 103 are directly installed, and finally the adhesive is injected into the adhesive channel 300. There is no need to wait for the adhesive to cure, which avoids a long waiting process. Moreover, there is only one adhesive injection action, which improves the efficiency of production assembly.

[0068] Furthermore, in this invention, the battery cell 400 is not directly bonded to the loading box 100, but is fixed by the connection between the limiting member 200 and the loading box 100. This can reduce the amount of glue used while ensuring the stability of the battery cell 400 connected to the loading box 100.

[0069] In the embodiments of this utility model, production efficiency can be improved and glue consumption can be reduced by applying glue in a single injection, thereby improving the technical problems of low production efficiency and high production cost.

[0070] The embodiments of this utility model have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this utility model. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this utility model. Therefore, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A battery module, characterized in that, include: Loading box, used to load battery cells; and, A limiting component is provided inside the loading box to fix the battery cell; The loading box and the limiting member are connected to form an adhesive channel for containing adhesive, so as to fix the limiting member to the loading box using the adhesive.

2. A battery module according to claim 1, characterized in that, The loading box is provided with multiple mounting seats, which are spaced apart. The mounting seats are used to install the battery cells. The limiting member is fastened to the multiple mounting seats. The glue channel is at least partially located between the limiting member and the mounting seats.

3. A battery module according to claim 2, characterized in that, The glue channel includes multiple vertical channels and multiple horizontal channels. The multiple vertical channels are arranged on the two side walls inside the loading box, and the multiple horizontal channels are arranged between two adjacent mounting seats or between the mounting seats and the loading box. Each pair of opposite vertical channels is connected to its corresponding horizontal channel.

4. A battery module according to claim 3, characterized in that, The mounting base has a first groove with an upward opening, and the limiting member can cover the first groove, forming the transverse channel between the limiting member and the mounting base.

5. A battery module according to claim 3, characterized in that, The vertical channel is formed when the limiting member and the loading box are connected; or, the vertical channel is formed by hollowing out part of the inner side wall of the loading box.

6. A battery module according to claim 2, characterized in that, The mounting base is provided with a first slot for fixing the first pole of the first end of the battery cell, and the limiting member is provided with a second slot for fixing the second pole of the second end of the battery cell. The first slot and the second slot are arranged opposite to each other.

7. A battery module according to claim 2, characterized in that, The loading box includes a box body and a box cover. The glue channel is at least partially located between the box body and the box cover and is capable of fixing the box body and the box cover. The box body is fixedly connected to the limiting member by the glue.

8. A battery module according to claim 7, characterized in that, The glue channel includes a top channel, and the box body is provided with a second groove with an upward opening. The box cover can cover the second groove, and the top channel is formed after the box body and the box cover are connected.

9. A battery module according to claim 8, characterized in that, The glue channel also includes multiple vertical channels and multiple horizontal channels. The multiple vertical channels are arranged on the two side walls inside the box body, and the multiple horizontal channels are arranged between two adjacent mounting seats or between the mounting seats and the box body. The lower ends of two opposite vertical channels are connected to their corresponding horizontal channels, and the upper ends of the vertical channels are connected to the top channel.

10. A battery module according to any one of claims 1-9, characterized in that, The loading box is equipped with a liquid injection port, which is connected to the glue channel.

11. A battery module according to claim 10, characterized in that, The liquid injection port is provided at least two, and the two liquid injection ports are respectively located on both sides of the loading box.

12. A battery module according to claim 7, characterized in that, The lid has multiple inner ribs on one side facing the box body, and all of the inner ribs abut against the surface of the limiting member.

13. A battery pack, characterized in that, Includes a battery module as described in any one of claims 1-12.

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