Battery packaging structure

Abstract

The utility model relates to battery technical field discloses battery packaging structure. Battery packaging structure includes: electric core, including electric core body and the pole lug of electric core body extension, protection board, set up in the one end with the pole lug of electric core, and protection board and pole lug electric connection, insulating shell, with the first accommodating cavity of electric core body opening direction, and protection board is inserted in the first accommodating cavity. Through setting up protection board and insulating shell in the one end with the pole lug of electric core, and protection board is inserted in the first accommodating cavity of insulating shell, uses insulating shell to pack protection board and pole lug, need not using a large number of polyamide adhesive paper, only need to suit insulating shell on protection board in the packaging process, and the process is simple, and the assembly is convenient, can reduce artificial cost, be favorable to improving finished product accuracy, improve processing efficiency.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, specifically to battery packaging structure. Background Technology

[0002] Soft-pack batteries are currently the main type of batteries used in mobile phones and other electronic devices. After being packaged, the batteries are installed in these devices. The battery packaging structure mainly consists of the battery cell, protection board, and insulating protective layer. To achieve insulation protection for the battery cell and protection board, a large amount of polyamide tape is typically used to wrap the outside of these components. However, this process involves cutting and attaching large amounts of polyamide tape, which is complex and requires a large number of manual workers. This results in low precision, defects such as peeling after attachment, poor consistency, and ultimately, low precision in the finished product. Utility Model Content

[0003] In view of this, the present invention provides a battery packaging structure to solve the problems of complex battery packaging process and low precision of finished product.

[0004] This utility model provides a battery packaging structure, including: a battery cell, including a battery cell body and a tab extending out of the battery cell body; a protection plate, disposed at one end of the battery cell having the tab, the protection plate being electrically connected to the tab; and an insulating shell having a first receiving cavity opening toward the battery cell body, the protection plate being inserted into the first receiving cavity.

[0005] Beneficial effects: By setting a protective plate and an insulating shell at the end of the battery cell with tabs, and inserting the protective plate into the first receiving cavity of the insulating shell, the protective plate and the tabs of the battery cell are sealed with the insulating shell. There is no need to use a large amount of polyamide adhesive paper as traditional protective insulating paper and sealing paper. During the sealing process, only the insulating shell needs to be put on the protective plate. The process is simple, the sealing technology is simple, and it is easy to assemble. It can reduce labor costs, and also help improve the precision of finished products and improve processing efficiency.

[0006] In one alternative embodiment, the first receiving cavity has two first inner walls disposed opposite each other along the thickness direction of the battery cell, at least one of the two first inner walls having an abutment portion protruding along the thickness direction of the battery cell, and the side of the protective plate abutting against the abutment portion.

[0007] Beneficial effect: By providing an abutment portion protruding towards the inner cavity on the inner wall of the first receiving cavity, the abutment portion abuts against the protective plate, thereby achieving the pressing of the abutment portion against the protective plate, thus ensuring the stability of the protective plate inserted into the first receiving cavity.

[0008] In one alternative embodiment, the abutment portion is formed on one of the two first inner walls, and the protective plate is sandwiched between the other first inner wall and the abutment portion.

[0009] Beneficial effects: By constructing an abutment portion on one of the two first inner walls that are arranged opposite each other in the thickness direction in the first receiving cavity, and not constructing an abutment portion on the other first inner wall, the structure is simple and easy to process. This allows the plate body of the protective plate to be clamped between the abutment portion and the other first inner wall without an abutment portion. On the basis of pressing the protective plate by the abutment portion, the other side surface of the protective plate is in contact with the first inner wall without an abutment portion, which further increases the stability of the protective plate.

[0010] In one optional embodiment, the number of abutting portions is multiple, and the multiple abutting portions are spaced apart along the width direction of the battery cell.

[0011] Beneficial effects: By setting multiple abutment parts spaced apart along the width direction on a first inner wall of the first receiving cavity, sufficient support can be provided for the protective plate along the width direction. Furthermore, because there is a gap between adjacent abutment parts, the material used for the entire insulating shell can be reduced, the weight can be reduced, and the cost can be saved.

[0012] In one optional embodiment, the cell body has a first sealing edge on the side near the insulating shell; the insulating shell also has a second receiving cavity that opens toward the cell body, the second receiving cavity and the first receiving cavity being spaced apart along the thickness direction of the cell, a partition is provided between the second receiving cavity and the first receiving cavity, the partition is provided with a relief groove that connects the first receiving cavity and the second receiving cavity, the side of the relief groove near the cell body is the open side, the second receiving cavity is adapted to accommodate the first sealing edge, and the relief groove corresponds to the tab.

[0013] Beneficial effects: The second receiving cavity provides a receiving space for the first sealing edge on the battery cell body. At the same time, the first sealing edge limits the insulating shell, realizing the installation and positioning of the insulating shell on the battery cell. By opening a relief groove corresponding to the tab on the partition between the first receiving cavity and the second receiving cavity, when the insulating shell is installed on the battery cell, during the process of the first sealing edge entering the second receiving cavity, the tab connected between the first sealing edge and the protection plate can also enter the insulating shell from the opening side of the relief groove, thereby realizing the smooth installation of the insulating shell on the battery cell.

[0014] In one optional embodiment, the plurality of abutting portions are two sets of support components, each set of support components including at least one abutting portion, the two sets of support components are spaced apart along the width direction of the battery cell, and the clearance groove is located between the two sets of support components.

[0015] Beneficial effects: By setting multiple abutment parts as two sets of support components and the two sets of support components spaced apart along the width direction of the cell, on the one hand, the clearance slot can be avoided, providing sufficient space for the clearance slot; on the other hand, the stability of the protection plate can be improved by the two sets of support components abutting against the protection plate at different positions along the width direction.

[0016] In one optional embodiment, along the width direction of the battery cell, each end of the first sealing edge is connected to a second sealing edge, the second sealing edges are bent relative to the first sealing edge, and the first sealing edge and the two second sealing edges form a receiving groove, in which the protective plate is located.

[0017] Beneficial effects: The protective plate is located in the receiving groove, which can make full use of the space. The aluminum-plastic film structure can be used to limit the position of the protective plate and facilitate the fixation of the subsequent insulating shell.

[0018] In one alternative embodiment, along the width direction of the battery cell, second openings are formed on both sides of the second receiving cavity, the second openings being adapted to allow the first sealing edge to pass through.

[0019] Beneficial effects: By setting the second receiving cavity of the insulating shell to form a second opening on both sides along the width direction, the first sealing edge can pass through, ensuring that the first sealing edge can be smoothly inserted into the second receiving cavity during the assembly of the insulating shell and the battery cell, and realizing the fixing and limiting function of the first sealing edge on the insulating shell.

[0020] In one alternative embodiment, along the width direction of the battery cell, a first opening is provided on one side of the first receiving cavity to communicate with the inside and outside of the first receiving cavity, and a flexible circuit board is connected to the protective plate, the first opening being adapted to allow the flexible circuit board to pass through.

[0021] Beneficial effects: By opening a first opening on one side of the first receiving cavity along the width direction, the first opening provides clearance for the passage of the flexible circuit board on the protection board, thereby enabling the flexible circuit board to be led out to the outside of the insulating shell. This facilitates the electrical connection between the protection board and the outside through the flexible circuit board, without affecting the protection of the protection board by the insulating shell.

[0022] In one optional embodiment, the protective plate has components protruding from the surface of the protective plate on the side facing the abutment portion. The flexible circuit board is welded to the protective plate through a soldering portion. The protective plate is also provided with an encapsulation layer, which is adapted to encapsulate the soldering portion and the components. The protective plate abuts against the abutment portion through the encapsulation layer.

[0023] Beneficial effects: By setting an encapsulation layer to encapsulate the components and soldered parts protruding from the surface of the protective board, the components can be protected, and the surface of the area covered by the encapsulation layer can be ensured to be flat. Thus, the protective board abuts against the contact part through the encapsulation layer, ensuring full contact between the contact part and the encapsulation layer, thereby ensuring the stability of the protective board. Attached Figure Description

[0024] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of a battery packaging structure according to an embodiment of the present utility model;

[0026] Figure 2 for Figure 1 An exploded view of the battery packaging structure shown.

[0027] Figure 3 This is a schematic diagram of the structure of an insulating shell according to an embodiment of the present utility model;

[0028] Figure 4 for Figure 3 A partially enlarged schematic diagram of the insulating shell shown;

[0029] Figure 5 This is a schematic diagram of the assembly of a protective plate and an insulating shell according to an embodiment of the present utility model;

[0030] Figure 6 for Figure 5 The diagram shows a front view of the assembly structure of the protective plate and the insulating shell.

[0031] Figure 7 This is a schematic diagram of the assembly structure of a battery cell and a protection board according to an embodiment of the present utility model;

[0032] Figure 8 Figure 7 The diagram shows the structural schematic of the battery cell and protection board assembly structure near the protection board end.

[0033] Figure 9 for Figure 8 A structural diagram from the back view;

[0034] Figure 10 This is a schematic diagram of the structure of a protective plate according to an embodiment of the present utility model;

[0035] Figure 11 for Figure 10 The exploded view of the protective plate shown.

[0036] Explanation of reference numerals in the attached figures:

[0037] 1. Battery cell; 101. Battery cell body; 102. Electrode tab; 103. First edge seal; 104. Second edge seal; 105. Receiving groove; 2. Protective board; 201. Component; 202. Encapsulation layer; 203. Flexible circuit board; 2031. Welding part; 204. Connector; 205. Connecting piece; 3. Insulating shell; 301. First receiving cavity; 302. Abutting part; 303. First opening; 304. Second receiving cavity; 305. Partition; 306. Relief groove; 307. Second opening. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0039] Lithium batteries are a commonly used type of battery for mobile phones. Currently, the most common packaging method for mobile phone batteries is soft-pack packaging. In order to achieve insulation protection, a large amount of polyamide adhesive paper is used as protective insulating paper and encapsulating paper to protect the battery cell and protection board. The process is complex and requires many workers to manually install the batteries, resulting in low precision.

[0040] The following is combined with Figures 1 to 11 The following describes embodiments of the present invention.

[0041] According to an embodiment of the present invention, a battery packaging structure is provided, comprising: a battery cell 1, a protection plate 2, and an insulating shell 3. The battery cell 1 includes a cell body 101 and tabs 102 extending from the cell body 101; the protection plate 2 is disposed at one end of the battery cell 1 with the tabs 102, and the protection plate 2 is electrically connected to the tabs 102; the insulating shell 3 has a first receiving cavity 301 opening toward the cell body 101, and the protection plate 2 is inserted into the first receiving cavity 301. The battery packaging structure has two perpendicular length directions, a width direction, and a thickness direction; both the protection plate 2 and the insulating shell 3 are disposed at one end of the battery cell 1 along the length direction, where the length direction refers to... Figures 1 to 2 The "length direction" indicated by the middle arrow; the surface of the protection board 2 is parallel to the surface with the largest surface area (i.e., the large surface) of the battery cell 1.

[0042] The battery packaging structure of this embodiment uses a protective plate 2 and an insulating shell 3 to be provided at one end of the cell 1 with tabs 102. The protective plate 2 is inserted into the first receiving cavity 301 of the insulating shell 3. The insulating shell 3 is used to encapsulate the protective plate 2 and the tabs 102 of the cell 1. There is no need to use a large amount of polyamide adhesive paper. During the encapsulation process, it is only necessary to put the insulating shell 3 on the protective plate 2. The process is simple, the encapsulation technology is simple, and it is easy to assemble. It can reduce labor costs and also help improve the precision of the finished product and improve processing efficiency.

[0043] In one embodiment, the first receiving cavity 301 has two first inner walls disposed opposite each other along the thickness direction of the battery cell 1. At least one of the two first inner walls has an abutment portion 302 protruding along the thickness direction of the battery cell 1, and the side of the protective plate 2 abuts against the abutment portion 302. Here, the thickness direction refers to... Figures 1 to 6 The middle arrow indicates the "thickness direction"; the side of the protective plate 2 refers to the surface of the protective plate 2 along the thickness direction. By providing an abutment portion 302 protruding towards the inner cavity on the inner wall of the first receiving cavity 301, the abutment portion 302 abuts against the protective plate 2, thereby pressing the protective plate 2 with the abutment portion 302, thus ensuring the stability of the protective plate 2 inserted into the first receiving cavity 301.

[0044] In one embodiment, further combination Figures 2 to 6 As shown, one of the two first inner walls has an abutment portion 302, and a protective plate 2 is sandwiched between the other first inner wall and the abutment portion 302. By constructing an abutment portion 302 on one of the two first inner walls that are arranged opposite each other in the thickness direction of the first receiving cavity 301, and not constructing an abutment portion 302 on the other first inner wall, the structure is simple and easy to process. This allows the plate body of the protective plate 2 to be clamped between the abutment portion 302 and the other first inner wall without an abutment portion 302. While achieving the pressing of the protective plate 2 by the abutment portion 302, the other side surface of the protective plate 2 is in contact with the first inner wall without an abutment portion 302, further increasing the stability of the protective plate 2.

[0045] Alternatively, in other embodiments, abutment portions 302 (not shown in the figure) can be provided on both first inner walls, and the protective plate 2 can be clamped between the abutment portions 302 on the two first inner walls, which can also achieve the protective plate 2 being securely inserted into the first receiving cavity 301.

[0046] In one embodiment, further combination Figures 3 to 4 The number of abutment portions 302 shown is multiple, and the multiple abutment portions 302 are spaced apart along the width direction of the battery cell 1. Here, the width direction refers to... Figures 3 to 4The arrow points to the "width direction". By arranging multiple abutment portions 302 at intervals along the width direction on a first inner wall of the first receiving cavity 301, sufficient support for the protective plate 2 can be provided along the width direction. Furthermore, because there is a gap between adjacent abutment portions 302, the material used for the entire insulating shell 3 can be reduced, the weight can be lightened, and costs can be saved.

[0047] In one embodiment, further combination Figures 3 to 4 As shown, the battery cell body 101 has a first sealing edge 103 on the side near the insulating shell 3; the insulating shell 3 also has a second receiving cavity 304 opening towards the battery cell body 101. The second receiving cavity 304 and the first receiving cavity 301 are spaced apart along the thickness direction of the battery cell 1. A partition 305 is provided between the second receiving cavity 304 and the first receiving cavity 301. A relief groove 306 is provided on the partition 305 to connect the first receiving cavity 301 and the second receiving cavity 304. The side of the relief groove 306 near the battery cell body 101 is the open side. The second receiving cavity 304 is suitable for accommodating the first sealing edge 103. The relief groove 306 corresponds to the tab 102. It should be noted that the battery cell body 101 has a first sealing edge 103 on one side along the length direction, and the tab 102 extends from the first sealing edge 103; the relief groove 306 is a through groove that penetrates the partition 305 along the thickness direction.

[0048] The first sealing edge 103 is inserted into the second receiving cavity 304, which provides a space for the first sealing edge 103 on the battery cell body 101. At the same time, the first sealing edge 103 limits the insulating shell 3, realizing the installation and positioning of the insulating shell 3 on the battery cell 1. By opening a relief groove 306 corresponding to the tab 102 on the partition 305 between the first receiving cavity 301 and the second receiving cavity 304, when the insulating shell 3 is installed on the battery cell 1, during the process of the first sealing edge 103 entering the second receiving cavity 304, the tab 102 connected between the first sealing edge 103 and the protection plate 2 can also enter the insulating shell 3 from the opening side of the relief groove 306, thereby realizing the smooth installation of the insulating shell 3 on the battery cell 1.

[0049] It should be noted that before the battery packaging structure is assembled, the tab 102 of cell 1 extends along the length of cell 1. During the battery packaging structure assembly process, the protection plate 2 needs to be welded to the tab 102 first, and then the tab 102 is bent into shape. Figure 2 As shown, the protective plate 2 enters the receiving groove 105 along with the bent electrode tab 102, in the state shown. Figures 7 to 9As shown in the diagram, the battery is then encapsulated by simply placing a single insulating shell 3 on top. A connector 205 is welded to the protection plate 2, and the tab 102 is welded to the connector 205, thus connecting the tab 102 to the protection plate 2. During the installation of the insulating shell 3, the protection plate 2 is inserted into the first receiving cavity 301, the first sealing edge 103 is inserted into the second receiving cavity 304, and the clearance groove 306 provides clearance for the tab 102, ensuring smooth installation of the insulating shell 3.

[0050] Preferably, the dimension of the second receiving cavity 304 along the thickness direction of the battery cell 1 is equal to the dimension of the first sealing edge 103 along the thickness direction of the battery cell 1, so that the first sealing edge 103 can be tightly inserted into the second receiving cavity 304, and the insulating shell 3 is fixed by the first sealing edge 103 on the battery cell 1, thereby further ensuring the relative stability between the insulating shell 3 and the battery cell 1.

[0051] Preferably, the partition 305 has a first inner wall with an abutment portion 302 on the side facing the first receiving cavity 301, that is, both the abutment portion 302 and the relief groove 306 are provided on the partition 305.

[0052] In one embodiment, further combination Figure 3 As shown, the multiple abutment portions 302 are divided into two groups of support components. Each group of support components includes at least one abutment portion 302. The two groups of support components are spaced apart along the width direction of the battery cell 1, and the clearance groove 306 is located between the two groups of support components. By dividing the multiple abutment portions 302 into two groups of support components and spaced apart along the width direction of the battery cell 1, the clearance groove 306 can be avoided, providing sufficient space for the clearance groove 306. Furthermore, the stability of the support for the protection plate 2 can be improved by having the two groups of support components abut against the protection plate 2 at different positions along the width direction.

[0053] Preferably, a set of support components is provided on each of the two sides near the edge along the width direction of the cell 1, which not only improves the stable support of the protection plate 2, but also provides sufficient space for the clearance groove 306.

[0054] In one embodiment, further combination Figures 8 to 9As shown, along the width direction of the battery cell, each end of the first sealing edge 103 is connected to a second sealing edge 104. The second sealing edges 104 are bent relative to the first sealing edge 103. The first sealing edge 103 and the two second sealing edges 104 form a receiving groove 105, in which the protective plate 2 is located. It should be noted that the first sealing edge 103 and the second sealing edges 104 are both sealing edges formed during the aluminum-plastic film encapsulation process on the outside of the battery cell 1. The bending directions of the two second sealing edges 104 are the same. Thus, the receiving groove 105 is formed by the first sealing edge 103, the two second sealing edges 104, and the end face of the battery cell body 101 with the first sealing edge 103. The protective plate 2 is located in the receiving groove 105, which can make full use of the space. The aluminum-plastic film structure can be used to limit the position of the protective plate 2 and facilitate the fixation of the subsequent insulating shell 3 using the aluminum-plastic film structure.

[0055] Preferably, the second edge sealing 104 is perpendicular to the first edge sealing 103.

[0056] In one embodiment, further combination Figures 3 to 4 As shown, along the width direction of the battery cell, second openings 307 are formed on both sides of the second receiving cavity 304, and the second openings 307 are adapted to allow the first sealing edge 103 to pass through. Further integration Figure 1 As shown, the insulating shell 3 is disposed at one end of the battery cell 1. The dimension of the insulating shell 3 along the width direction is smaller than that of the battery cell 1 along the width direction. That is, along the width direction of the battery cell 1, the dimension of the insulating shell 3 is smaller than that of the first sealing edge 103. Therefore, by setting the second receiving cavity 304 of the insulating shell 3 to form a second opening 307 on both sides along the width direction, the first sealing edge 103 can pass through, ensuring that the first sealing edge 103 can be smoothly inserted into the second receiving cavity 304 during the assembly of the insulating shell 3 and the battery cell 1, and realizing the fixing and limiting function of the first sealing edge 103 on the insulating shell 3.

[0057] In one embodiment, further combination Figure 3 and Figures 5 to 6As shown, along the width direction of the battery cell 1, a first opening 303 is provided on one side of the first receiving cavity 301, connecting the inside and outside of the first receiving cavity 301. A flexible printed circuit (FPC) 203 is connected to the protective plate 2, and the first opening 303 is suitable for the passage of the flexible printed circuit 203. It should be noted that the first receiving cavity 301 also has two second sidewalls arranged opposite each other along the width direction of the battery cell 1, and one of the two second sidewalls has the first opening 303. The protective plate 2 is connected to the outside through the flexible printed circuit 203, and the flexible printed circuit 203 needs to extend to the outside of the insulating shell 3. By providing the first opening 303 on one side of the first receiving cavity 301 along the width direction, the first opening 303 provides clearance for the passage of the flexible printed circuit 203 on the protective plate 2, thereby enabling the flexible printed circuit 203 to be led out to the outside of the insulating shell 3. This facilitates the electrical connection between the protective plate 2 and the outside through the flexible printed circuit 203, without affecting the protection of the protective plate 2 by the insulating shell 3.

[0058] Specifically, a connector 204 is provided on the part of the flexible circuit board 203 that extends beyond the insulating shell 3. The connector 204 is used to make electrical connections with external devices.

[0059] In one embodiment, further combination Figure 6 and Figures 10 to 11 As shown, the protective plate 2 has components 201 protruding from the surface of the protective plate 2 on the side facing the abutment portion 302. The flexible circuit board 203 is soldered to the protective plate 2 via a soldering portion 2031. The protective plate 2 is also provided with an encapsulation layer 202, which is suitable for encapsulating the soldering portion 2031 and the components 201. The protective plate 2 abuts against the abutment portion 302 through the encapsulation layer 202. It should be noted that the components 201 provided on the protective plate 2 include power devices such as transistors and resistors, as well as control devices such as integrated circuit modules. The components 201 protrude from the surface of the protective plate 2. By encapsulating the components 201 and soldering parts 2031 protruding from the surface of the protective plate 2 with the encapsulation layer 202, the components 201 can be protected, and the surface of the area covered by the encapsulation layer 202 can be kept flat. Thus, the protective plate 2 abuts against the abutting part 302 through the encapsulation layer 202, ensuring full contact between the abutting part 302 and the encapsulation layer 202, thereby ensuring the stability of the protective plate 2.

[0060] Specifically, the components 201 are arranged in sections on the protective plate 2, including a first component assembly located in the middle of the protective plate 2 along the width direction, and a second component assembly near one edge of the protective plate 2. The encapsulation layer 202 is divided into three parts, with one encapsulation layer corresponding to each of the first component assembly, the second component assembly, and the soldering part 2031, thereby realizing separate encapsulation of different components and facilitating processing and molding. Among them, the first component assembly located in the middle of the protective plate 2 has a larger dimension along the thickness direction, and correspondingly, the encapsulation layer 202 located in the middle has a larger dimension along the thickness direction. Since each of the two sets of support components abuts against an encapsulation layer located on both sides in the width direction, the space between the two sets of support components can provide sufficient accommodation space for the larger encapsulation layer 202 in the middle, thereby making full use of the space of the first receiving cavity 301 and improving the compactness of the structure.

[0061] In one embodiment, the insulating shell 3 is a rubber shell. The rubber shell has good insulation properties and a certain cushioning and shock-absorbing effect, further enhancing the protective function of the protection plate 2. Preferably, the rubber shell is integrally molded, which facilitates processing and ensures good sealing at the end of the rubber shell away from the battery cell body 101.

[0062] In one embodiment, the insulating shell 3 is bonded to the battery cell body 101. The bonding method is relatively simple, easy to operate, and provides good stability after connection. Specifically, the insulating shell 3 and the aluminum-plastic film on the outside of the battery cell body 101 can be fixedly connected using three methods: back adhesive, spot adhesive, and adhesive tape. This simplifies the structure, makes manufacturing easy, and facilitates maintenance and replacement.

[0063] Optionally, the battery is a lithium battery; more specifically, the battery is a mobile phone lithium battery.

[0064] The battery packaging structure in this embodiment simplifies the lithium battery packaging process. By using a plastic shell for packaging, labor costs are reduced, and the modular design of the mobile phone lithium battery facilitates assembly, repair, and replacement.

[0065] Although embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A battery packaging structure, characterized by, include: The battery cell (1) includes a battery cell body (101) and a tab (102) extending out of the battery cell body (101); A protection plate (2) is disposed at one end of the battery cell (1) having the tab (102), and the protection plate (2) is electrically connected to the tab (102); The insulating shell (3) has a first receiving cavity (301) opening toward the battery cell body (101), and the protective plate (2) is inserted into the first receiving cavity (301).

2. The battery packaging structure of claim 1, wherein, The first receiving cavity (301) has two first inner walls disposed opposite each other along the thickness direction of the battery cell (1), and at least one of the two first inner walls has an abutment portion (302) protruding along the thickness direction of the battery cell (1), and the side of the protective plate (2) abuts against the abutment portion (302).

3. The battery packaging structure of claim 2, wherein, The abutment portion (302) is constructed on one of the two first inner walls, and the protective plate (2) is sandwiched between the other first inner wall and the abutment portion (302).

4. The battery packaging structure of claim 3, wherein, The number of the abutting parts (302) is multiple, and the multiple abutting parts (302) are spaced apart along the width direction of the battery cell (1).

5. The battery packaging structure of claim 4, wherein, The battery cell body (101) has a first sealing edge (103) on the side near the insulating shell (3); The insulating shell (3) also has a second receiving cavity (304) opening toward the cell body (101). The second receiving cavity (304) and the first receiving cavity (301) are spaced apart along the thickness direction of the cell (1). A partition (305) is provided between the second receiving cavity (304) and the first receiving cavity (301). A relief groove (306) is provided on the partition (305) to connect the first receiving cavity (301) and the second receiving cavity (304). The side of the relief groove (306) near the cell body (101) is the open side. The second receiving cavity (304) is suitable for accommodating the first sealing edge (103). The relief groove (306) corresponds to the tab (102).

6. The battery packaging structure of claim 5, wherein, The plurality of abutment portions (302) are divided into two groups of support components, each group of support components including at least one abutment portion (302), the two groups of support components are spaced apart along the width direction of the cell (1), and the clearance groove (306) is located between the two groups of support components.

7. The battery packaging structure of claim 5, wherein, Along the width direction of the battery cell, each end of the first sealing edge (103) is connected to a second sealing edge (104). The second sealing edge (104) is bent relative to the first sealing edge (103). The first sealing edge (103) and the two second sealing edges (104) form a receiving groove (105). The protective plate (2) is located in the receiving groove (105).

8. The battery packaging structure of claim 7, wherein, Along the width direction of the battery cell, second openings (307) are formed on both sides of the second receiving cavity (304), and the second openings (307) are adapted to allow the first sealing edge (103) to pass through.

9. The battery packaging structure according to any one of claims 2 to 8, characterized by, A first opening (303) is arranged on one side of the first accommodating cavity (301) along the width direction of the battery cell (1) and is in communication with the inside and outside of the first accommodating cavity (301), a flexible circuit board (203) is connected to the protection plate (2), and the first opening (303) is adapted to pass through the flexible circuit board (203).

10. The battery packaging structure of claim 9, wherein, The protection plate (2) has a component (201) protruding from the surface of the protection plate (2) on the side facing the abutting portion (302), the flexible circuit board (203) is welded to the protection plate (2) through a welding portion (2031), the protection plate (2) is further provided with an encapsulation layer (202), the encapsulation layer (202) is adapted to encapsulate the welding portion (2031) and the component (201), and the protection plate (2) abuts against the abutting portion (302) through the encapsulation layer (202).

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