A battery device

Abstract

The application relates to the technical field of batteries, and discloses a battery device. The battery device comprises a shell, an electric core arranged in the shell, the electric core comprising an electrode sheet and a tab part extending from a large surface of the electric core, and an insulating support arranged in the shell, the insulating support comprising a main body part and a bent part, at least part of the main body part being arranged between the shell and the tab part, the bent part being connected to the main body part and bent to one side of the main body part to form a limiting space in cooperation with the main body part, the limiting space accommodating at least part of the tab part, and the bent part forming the limiting space being arranged opposite to at least part of the large surface of the electric core. The battery device can quickly and effectively gather the tab part, and can improve the stability of the gathered tab part.

Description

Technical Field

[0001] This invention relates to the field of battery technology, and more particularly to a battery device. Background Technology

[0002] When assembling existing battery devices, the tabs of the battery cells need to be bundled to meet the connection requirements between the tabs and external structural components. It is worth noting that the bundling operation of existing tabs is complex; moreover, based on the current manufacturing process, the shape of the bundled tabs varies among different battery devices of the same model, making it impossible to achieve uniformity, and the structural stability of the bundled tabs is poor. Summary of the Invention

[0003] The present invention provides a battery device that can quickly and effectively gather the tabs and improve the stability of the tabs after gathering.

[0004] To achieve the above objectives, the present invention provides the following technical solution:

[0005] According to a first aspect of the present invention, a battery device is provided, comprising:

[0006] case;

[0007] A battery cell, wherein the battery cell is disposed within the housing; the battery cell includes electrode plates and tabs extending from the large surface of the battery cell;

[0008] An insulating support is disposed within the housing; the insulating support includes a main body and a bent portion, at least a portion of the main body is disposed between the housing and the electrode tab; the bent portion connects to the main body and bends to one side of the main body to form a limiting space with the main body; the limiting space accommodates at least a portion of the electrode tab, and the bent portion forming the limiting space is disposed opposite to at least a portion of the large surface of the battery cell.

[0009] The battery device provided in this application includes a battery cell and an insulating support inside the casing. At least a portion of the main body of the insulating support is positioned between the casing and the tab portion. A bent portion connects to the main body and can be bent relative to the main body to cooperate with the main body and form a limiting space. At least a portion of the tab portion of the battery cell is positioned within the limiting space. When using the battery device provided in this application, the tab portion can be placed in the main body, and then the bent portion can be bent. The bent portion, which is positioned opposite at least a portion of the large surface of the battery cell, can be used to converge the tab portion, so that the tab portion is positioned within the limiting space formed by the bent portion and the main body. This reduces assembly difficulty, improves assembly efficiency, and reduces manufacturing costs.

[0010] It should be noted that the battery device provided in this application forms a limiting space through an insulating bracket. After the multi-layer tabs are welded, the tabs can be gathered by bending the bends to control the thickness of the tabs, ensuring the stability of the tab structure formed by the multi-layer tabs and avoiding the occurrence of incomplete welding. Moreover, the limiting space can limit the volume occupied by the tabs in the housing and the placement position, so as to ensure the consistency of the tabs in different battery devices, improve the adaptability of the tabs in each battery device to the space inside the housing, and thus improve the utilization rate of the battery space. Attached Figure Description

[0011] To better understand this application, reference can be made to the embodiments shown in the following figures. Components in the figures are not necessarily to scale, and related elements may be omitted to emphasize and clearly illustrate the technical features of this application. Furthermore, related elements or components may have different arrangements as known in the art. Additionally, in the figures, the same reference numerals denote the same or similar components in various figures. Wherein:

[0012] Figure 1 This is a schematic diagram of the structure of the battery device provided in the embodiments of this application;

[0013] Figure 2 This is a schematic diagram of the bent portion in the unfolded state of the battery device provided in the embodiments of this application;

[0014] Figure 3 This is a schematic diagram of the bent portion in the bent state of the battery device provided in the embodiments of this application;

[0015] Figure 4 A partial cross-sectional view of the battery device provided in an embodiment of this application;

[0016] Figure 5 This is another schematic diagram of the battery device provided in the embodiments of this application;

[0017] Figure 6 Another partial cross-sectional view of the battery device provided in the embodiments of this application;

[0018] Figure 7 This is a half-sectional schematic diagram of the battery device provided in the embodiments of this application.

[0019] The annotations in the attached figures are explained as follows:

[0020] 100, Housing; 200, Cell; 210, Electrode; 220, Electrode Lug; 300, Insulating Support; 310, Main Body; 320, Bending Part; 330, Locking Part; 340, Groove; 400, Terminal Assembly; 410, Terminal; 420, Limiting Plate; 430, Adapter Plate; A, Protruding Structure. Detailed Implementation

[0021] The technical solutions in the exemplary embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. The exemplary embodiments described herein are for illustrative purposes only and are not intended to limit the scope of protection of this application. Therefore, it should be understood that various modifications and changes can be made to the exemplary embodiments without departing from the scope of protection of this application.

[0022] In the description of this application, unless otherwise expressly specified and limited, the terms “first” and “second” are used for descriptive purposes only and should not be construed as indicating or implying relative importance; the term “multiple” refers to two or more; and the term “and / or” includes any and all combinations of one or more of the associated listed items. In particular, references to “the / ” object or “a” object are also intended to indicate one of a possible plurality of such objects.

[0023] Unless otherwise specified or stated, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, an integral connection, an electrical connection, or a signal connection; "connection" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0024] Furthermore, it should be understood that the directional terms such as "upper," "lower," "inner," and "outer" described in the exemplary embodiments of this application are used to describe the angles shown in the accompanying drawings and should not be construed as limiting the exemplary embodiments of this application. It should also be understood that, in the context of an element or feature being connected to another element(s) "upper," "lower," "inner," or "outer," it can be directly connected to the other element(s) "upper," "lower," "inner," or "outer," or indirectly connected to the other element(s) "upper," "lower," "inner," or "outer" through an intermediate element.

[0025] This application provides a battery device. Figure 1 This is a schematic diagram of the structure of the battery device provided in the embodiments of this application; Figure 2 This is a schematic diagram of the bent portion in the unfolded state of the battery device provided in the embodiments of this application; Figure 3 This is a schematic diagram of the bent portion in the bent state of the battery device provided in the embodiments of this application; Figure 4 This is a partial cross-sectional view of a battery device provided in an embodiment of this application. Please refer to... Figures 1 to 4 The battery device provided in this application embodiment, as shown in the structure, includes:

[0026] Casing 100;

[0027] The battery cell 200 is disposed inside the housing 100; the battery cell 200 includes an electrode 210 and a tab 220 extending from the large surface of the battery cell 200.

[0028] An insulating support 300 is disposed within the housing 100. The insulating support 300 includes a main body 310 and a bent portion 320. At least a portion of the main body 310 is disposed between the housing 100 and the tab portion 220. The bent portion 320 is connected to the main body 310 and bends to one side of the main body 310 to form a limiting space with the main body 310. The limiting space accommodates at least a portion of the tab portion 220, and the bent portion 320 forming the limiting space is disposed opposite to at least a portion of the large surface of the cell 200.

[0029] To facilitate the illustration of the internal structure of housing 100, Figures 1 to 4 Only a portion of the housing 100 is shown; and the retracted tab 220 is shown as a black square. It should be understood that the accompanying drawings are for illustrative purposes only and are not intended to be limiting.

[0030] Specifically, in the battery device provided in this application embodiment, the housing 100 is provided with a battery cell 200 and an insulating support 300. At least a portion of the insulating support 300 is placed between the housing 100 and the tab portion 220. For example, the main body portion 310 is fixed in position relative to the housing 100, and the bent portion 320 is connected to the main body portion 310 and can be bent relative to the main body portion 310 to cooperate with the main body portion 310 and form a limiting space. At least a portion of the tab portion 220 in the battery cell 200 is placed within the limiting space.

[0031] When using the battery device provided in the embodiments of this application, the tab portion 220 can be placed in the main body portion 310, and then the bending portion 320 can be bent. The bending portion 320, which is at least partially opposite to the large surface of the cell 200, is used to gather the tab portion 220 so that the tab portion 220 is placed in the limiting space formed by the bending portion 320 and the main body portion 310. This can reduce assembly difficulty, improve assembly efficiency, and reduce manufacturing costs.

[0032] It should be understood that the inner electrode 210 of the cell 200 is bent or wound. During the bending or winding of the electrode 210, the tabs drawn out integrally from the electrode 210 are stacked to form the tab portion 220, so that the tab portion 220 is drawn out from the large surface of the cell 200.

[0033] It should be noted that the battery device provided in this application embodiment forms a limiting space through the insulating bracket 300. After the multi-layer tabs are welded, the tab portion 320 can be bent to tighten the tab portion 220, thereby controlling the thickness of the tab portion 220, ensuring the structural stability of the tab portion 220 formed by the multi-layer tabs and avoiding the phenomenon of poor welding. Moreover, the limiting space can limit the volume occupied by the tab portion 220 in the housing 100 and its placement position, so as to ensure the consistency of the tab portion 220 in different battery devices, improve the adaptability of the tab portion 220 in each battery device to the space inside the housing 100, and thus improve the utilization rate of the battery internal space.

[0034] It is worth noting that the battery is generally rectangular in shape, having two large battery faces and four battery sides. The two large battery faces are arranged opposite each other, and the four battery sides specifically include two long sides and two wide sides. Therefore, the battery has length, width, and thickness directions. For example, when configuring the battery device provided in the embodiments of this application, as follows... Figures 1 to 4 As shown, the bent portion 320 and the main body portion 310 are arranged in a direction parallel to the thickness direction.

[0035] To more clearly illustrate the battery device provided in the embodiments of this application, the following structural description will now be conducted with the bent portion 320 and the main body portion 310 arranged in a direction parallel to the thickness direction.

[0036] In one embodiment, please refer to... Figure 4 In the structure shown, the bent portion 320, after being bent, abuts against the tab portion 220 on the side facing the main body portion 310.

[0037] It should be noted that after the multi-layer tabs are folded, they need to be gathered. When the bent part 320 abuts against the tab part 220, the bent part 320 can press the multi-layer tabs together to improve the gathering effect of the insulating bracket 300 on the tab part 220 and reduce the possibility of large gaps between the multi-layer tabs and the risk of poor soldering.

[0038] Of course, since the multi-layer tabs may be welded first and then placed in the limiting space, there is a possibility that the bent part 320 may not abut against the tab part 220, which will not be elaborated further.

[0039] In one embodiment, please refer to... Figures 1 to 4 As shown in the structure, the battery device provided in this application embodiment also includes a locking part 330, which is used to lock the relative position of the bent part 320 relative to the main body part 310 after bending.

[0040] It should be noted that after the bending portion 320 is bent, the locking portion 330 locks the relative position of the bending portion 320 and the main body portion 310, so that a stable limiting space is formed between the main body portion 310 and the bending portion 320. Specifically, by setting the locking portion 330, a stable and continuous holding force can be applied to the multi-layer tabs by the limiting space, so as to ensure the stability of the convergence state of the multi-layer tabs and the tight fit between the multi-layer tabs, which can improve the welding effect of the tab portion 220, thereby improving the performance of the battery.

[0041] When specifically setting the locking part 330, there are multiple possibilities for the setting position of the locking part 330, and it is at least one of the following setting forms.

[0042] In one embodiment, the locking part 330 is disposed on the main body 310 of the insulating bracket 300, and at least a portion of the main body 310 is disposed parallel to the large surface of the battery cell 200.

[0043] It is worth noting that the locking part 330 may be provided only on the main body part 310 to facilitate the arrangement of the locking part 330.

[0044] Of course, the locking part 330 can also be provided on the bending part 320 of the insulating bracket 300; or, the locking part 330 can be provided on both the main body part 310 and the bending part 320 of the insulating bracket 300, which will not be elaborated here.

[0045] In another embodiment, the locking part 330 is disposed on the large surface of the housing 100 to simultaneously enhance the stability of the insulating support 300 relative to the housing 100.

[0046] In another embodiment, the battery device provided in this application further includes an electrode assembly 400 (such as...). Figure 1 As shown, at least a portion of the pole assembly 400 extends from the outside of the housing 100 into the limiting space. The pole assembly 400 is electrically connected to the tab portion 220, and the locking portion 330 is disposed on the pole assembly 400 located in the limiting space.

[0047] It should be noted that this structural design can improve the stability of the insulating bracket 300 relative to the pole post assembly 400, thereby improving the structural stability of the limiting space and ensuring the convergence effect of the counter-lever 220.

[0048] In one specific embodiment, please refer to [link / reference]. Figures 1 to 3 The structure shown includes a locking part 330 with a hook, which is provided on the main body part 310 and engages with the bent part 320 on the side away from the main body part 310.

[0049] It should be noted that the hook structure is simple and easy to operate, which can reduce the difficulty of assembly. At the same time, since the locking part 330 is located in the main body 310, when the tab 220 is placed in the main body 310, the locking part 330 can be directly avoided, so as to prevent the locking part 330 from puncturing or cutting the tab 220 during locking, which can improve the safety performance of the battery.

[0050] Furthermore, it is worth noting that when the locking part 330 is set as a hook, the locking effect of the locking part 330 on the bent part 320 and the main body part 310 can be enhanced, thereby improving the stability of the bent part 320 relative to the main body part 310, ensuring that the limiting space can stably and effectively apply pressure to the tab part 220, thereby improving the convergence effect of the tab part 220.

[0051] Of course, the locking part 330 can also be other structures. For example, the locking part 330 can include two magnetic suction members, one of which is provided in the main body part 310 and the other is provided in the bending part 320; or, the locking part 330 can include a fixing hole and a strap, the fixing hole is provided in the main body part 310 and the bending part 320, and the strap can pass through the fixing hole provided in the main body part 310 and the fixing hole provided in the bending part 320 to realize the limiting function of the main body part 310 and the bending part 320.

[0052] It should be understood that the locking unit 330 can also be configured with other structures as needed, which will not be elaborated further.

[0053] In one embodiment, please refer to Figure 5 The structure shown has a protrusion on the edge of the bent portion 320, which protrudes toward the main body portion 310, and the side of the protrusion away from the main body portion 310 is a groove 340.

[0054] The hook engages with the bottom of the groove 340.

[0055] It should be noted that the protrusion size of the protrusion part matches the size of the hook along the thickness direction. In this configuration, the size of the hook in the thickness direction can be reduced, which can prevent the hook from protruding too much from the main body 310 and accidentally damaging the electrode ear 220.

[0056] Meanwhile, since the hook engages within the groove 340 in this configuration, the side wall of the groove 340 can limit the hook, preventing it from coming out of the groove 340 and improving the stability of the locking part 330.

[0057] Furthermore, it is worth noting that, along the length direction, the engagement between the groove 340 and the hook can limit the placement of the tab 220 on this side, preventing the tab 220 from coming out of the limiting space, which can further improve the stability of the connection between the tab 220 and the pole assembly 400.

[0058] In one embodiment, please refer to... Figures 1 to 5 The structure shown has a guide surface for guiding the bending part 320 during the bending action, so that the locking part 330 can engage the bending part 320 with the main body part 310.

[0059] It should be noted that by setting a guide surface on the hook, the assembly difficulty can be reduced and the assembly speed can be increased.

[0060] In one embodiment, please refer to... Figures 1 to 5 The structure shown includes two latches in the locking part 330, which are disposed opposite to each other, and each latch engages with one end of the bent part 320. For example, as... Figure 3 As shown, the two hooks are arranged opposite each other along the width direction so that the insulating bracket 300 forms an opening on the side facing the cell 200, so that the tab 220 can be placed in the limiting space.

[0061] It should be noted that the above-described configuration allows the locking part 330 to lock the bent part 320 from both ends, so that the bent part 320 applies a stable holding force to each part of the tab 220, thereby improving the constriction effect of the limiting space. At the same time, since the hooks engage each end of the bent part 320, the hooks can effectively avoid the tab 220, allowing the tab 220 to be easily inserted into the limiting space.

[0062] Of course, the number of hooks is not limited to two; multiple hooks can be used to engage each side of the bent portion 320 to improve the fixing effect. The hooks can be evenly spaced or unevenly spaced, depending on the requirements, which will not be elaborated further here.

[0063] In another specific embodiment, the main body 310 and the bent portion 320 are connected by adhesive bonding. It should be understood that adhesive bonding is simple and easy to operate, reducing the difficulty of assembly operations.

[0064] In one embodiment, the insulating support 300 is a one-piece molded structure.

[0065] It should be noted that the one-piece molding structure can simplify the manufacturing process, improve manufacturing efficiency, and reduce production costs.

[0066] In one specific embodiment, the connection between the main body 310 and the bent portion 320 can be a weak part, so that the bent portion 320 can be folded relative to the main body 310 under the action of external force.

[0067] In another specific embodiment, the main body 310 may be an integral weak part in order to reduce the volume while maintaining the insulation effect.

[0068] In another embodiment, the main body 310 and the bent portion 320 are separate structures.

[0069] It should be noted that the main body 310 and the bending part 320 can be manufactured separately as needed, and a connecting structure can be provided between the two.

[0070] It is worth noting that this connection structure does not affect the bending performance of the bent portion 320 relative to the main body portion 310.

[0071] In one embodiment, please refer to... Figure 4 The structure shown has an opening in the limiting space, which faces the electrode 210.

[0072] It is worth noting that the opening of the limiting space, that is, the entrance and exit of the electrode tab 220 into the limiting space, can be set to face the electrode plate 210, so that the electrode tab 220 led out from the electrode plate 210 can be directly inserted into the limiting space, which can reduce the bending degree of the electrode tab 220, and further reduce the assembly difficulty and improve the assembly efficiency.

[0073] In one embodiment, along the arrangement direction of the bent portion 320 and the main body portion 310, the thickness of the limiting space is D1, the thickness of the battery cell 200 is D2, and the ratio of D1 to D2 is in the range of 0.05-0.5.

[0074] It should be noted that if the ratio of D1 to D2 is too large, the limiting space will be too large, failing to effectively constrict the tab 220. This will result in excessive gaps between the multiple tabs within the tab 220, potentially leading to poor soldering. Furthermore, it will cause the insulating support 300 to occupy too much space, hindering the efficient use of space within the battery device. Conversely, if the ratio of D1 to D2 is too small, the limiting space will be too thin, preventing the tab 220 from being effectively placed within it and posing a risk of deformation and wrinkling of the multiple tabs within the tab 220. Setting the ratio of D1 to D2 within the aforementioned range effectively balances these two issues.

[0075] In specific settings, the ratio of D1 to D2 can be set to any of the following values.

[0076] 0.05, 0.06, 0.07, 0.08, 0.09, 0.10, 0.11, 0.12, 0.13, 0.14, 0.15, 0.16, 0.17, 0.18, 0.19, 0.20, 0.25, 0.30, 0.35, 0.40, 0.45, 0.50.

[0077] It should be understood that the ratio of D1 to D2 is not limited to the example above, and can be set according to specific needs, which will not be elaborated here.

[0078] Please continue to refer to this. Figures 1 to 6 In the structure shown, at least a portion of the tab 220 in the cell 200 is placed within a limiting space, and the tab 220 placed within the limiting space is electrically connected to the terminal assembly 400 that penetrates the limiting space, so as to realize the electrical connection between the cell 200 and the terminal assembly 400.

[0079] In one embodiment, please refer to... Figure 6 The structure shown has a countersunk hole (not shown) in the main body 310, the opening of which is located on the side of the main body 310 facing the tab 220, and a through hole at the bottom of the countersunk hole.

[0080] The pole assembly 400 includes a pole 410 and a limiting piece 420. The pole 410 is disposed outside the housing 100; the limiting piece 420 is disposed inside the housing 100, and at least a portion of the limiting piece 420 is embedded in a countersunk hole and a through hole to electrically connect the pole 410 to the tab portion 220.

[0081] like Figure 6 As shown, at least a portion of the limiting piece 420 is placed inside the countersunk hole, and the size of this portion of the limiting piece 420 is larger than the size of the through hole. Therefore, the limiting piece 420 can play a limiting role and prevent the portion of the terminal post 410 extending into the housing 100 from coming out of the housing 100. This can improve the stability of the relative position between the terminal post assembly 400 and the housing 100, thereby ensuring the stability of the connection between the terminal post assembly 400 and the tab portion 220, and thus improving the service life of the battery device.

[0082] It should be understood that the shape of the countersunk hole is not limited to a circle. It can also be set to a square, triangle, or other shapes as needed. The specific settings can be made according to the requirements, which will not be elaborated here.

[0083] It is worth noting that the insulating bracket 300 has one or more countersunk holes at the position corresponding to each pole post 410, and each countersunk hole has a limiting piece 420. Each limiting piece 420 is connected to the same pole post 410, which can increase the connection area between the pole post 410 and the tab 220, thereby improving the current carrying capacity.

[0084] Meanwhile, since each terminal post 410 is fixed relative to the insulating bracket 300 by multiple limiting pieces 420, the stability of the terminal post 410 can be improved, thereby ensuring the connection stability between the tab 220 and the terminal post 410 and improving the service life of the battery device.

[0085] In one embodiment, please refer to... Figures 2 to 6As shown in the structure, the pole assembly 400 also includes an adapter piece 430, which is placed in the limiting space and is located between the tab portion 220 and the main body portion 310; the adapter piece 430 is electrically connected to the limiting piece 420 and the tab portion 220.

[0086] It should be noted that the adapter piece 430 is electrically connected to the limiting piece 420 and the tab 220 respectively, and plays a connecting role between the terminal post 410 and the tab 220. This can increase the connection area to ensure the current carrying capacity, thereby improving the battery performance.

[0087] It is worth noting that when each pole post 410 is limited relative to the insulating support 300 by multiple limiting pieces 420, each adapter piece 430 connects to multiple limiting pieces 420 to ensure the current flow area between the adapter piece 430 and the pole post 410 and improve the current flow capacity.

[0088] In one embodiment, please refer to... Figures 2 to 6 As shown in the structure, the adapter plate 430 has a protruding structure A on the side opposite to the main body 310, and the protruding structure A abuts against the electrode ear 220.

[0089] It should be noted that by forming a protruding structure A on the adapter piece 430, the size of the limiting space in the thickness direction can be reduced, thereby improving the limiting and pressing effect on the tab 220, preventing large gaps between multiple tabs and inducing poor soldering, thus improving the limiting effect of the insulating bracket 300 on the tab 220.

[0090] When specifically setting the protrusion structure A on the adapter piece 430, there are multiple possibilities for the preparation form of the protrusion structure A, at least one of the following possibilities.

[0091] In one specific embodiment, the protruding structure A is a reinforcing rib formed on the adapter piece 430. It should be noted that, on the one hand, this arrangement can enhance the structural strength of the protruding structure A, ensuring that after the bent portion 320 is bent relative to the main body portion 310, the protruding structure A can apply sufficient holding force to the tab portion 220, improving the convergence effect on the tab portion 220 and ensuring the connection effect between the tab portion 220 and other structures; on the other hand, this arrangement can ensure the connection area between the adapter piece 430 and the limiting piece 420 to ensure the current carrying capacity, thereby improving the structural performance of the battery.

[0092] In another specific embodiment, the protruding structure A is formed by a stamped adapter piece 430. In other words, the adapter piece 430 has a recessed structure on the opposite side of the protruding structure A.

[0093] It is worth noting that, in order to ensure the connection area between the adapter piece 430 and the limiting piece 420, the stamping position of the protruding structure A needs to be set according to the requirements, which will not be elaborated further.

[0094] In one embodiment, the insulating support 300 is made of an insulating material. Exemplarily, the insulating material may be selected from one or more of PC (polycarbonate), PP (polypropylene), or a composite of PC and ABS (acrylonitrile butadiene styrene copolymers).

[0095] In one embodiment, please refer to... Figure 1 The structure shown has an insulating support 300 made of plastic.

[0096] It should be noted that the main body 310 of the insulating bracket 300 can be made of plastic to seal the terminal assembly 400, thereby ensuring the sealing performance of the battery device.

[0097] In the specific configuration of the insulating bracket 300, for example, the existing lower plastic portion can be extended to form the bent portion 320 of the insulating bracket 300. For example, the lower plastic portion can be extended to the size of a hinge to form the bent portion 320.

[0098] It is worth noting that the battery's tab 220 extends from at least one end of the large surface of the cell 200, such as... Figure 7 As shown, when the tabs 220 are led out from opposite ends of the large surface of the cell 200, each tab 220 can be limited by an insulating bracket 300. For an example, please refer to [reference needed]. Figure 7 The structure shown includes two terminals 410 arranged opposite each other along the length direction, and each terminal 410 is connected to the tab 220 on that side.

[0099] It should be noted that at least one of the two insulating supports 300 can be configured as described above. Of course, both insulating supports 300 can also be configured as described above. The specifics will not be elaborated further.

[0100] It should be understood that the two terminals 410 have opposite polarities. When one terminal 410 is positive, the other terminal 410 is negative; conversely, when one terminal 410 is negative, the other terminal 410 is positive. Figure 7As shown, the two terminals 410 are located on the same side of the battery. Of course, the two terminals 410 can also be located on opposite sides of the battery along its length, depending on the requirements. The specific configuration can be made according to the requirements, and will not be elaborated here.

[0101] Other embodiments of this application will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein. The specification and exemplary embodiments are to be considered illustrative only, and the true scope and spirit of this application are indicated by the appended claims.

[0102] It should be understood that this application is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of protection of this application is limited only by the appended claims.

Claims

1. A battery device, characterized in that, include: case; A battery cell, wherein the battery cell is disposed within the housing; the battery cell includes electrode plates and tabs extending from the large surface of the battery cell; An insulating support is disposed within the housing; the insulating support includes a main body and a bent portion, at least a portion of the main body is disposed between the housing and the electrode tab; the bent portion connects to the main body and bends to one side of the main body to form a limiting space with the main body; the limiting space accommodates at least a portion of the electrode tab, and the bent portion forming the limiting space is disposed opposite to at least a portion of the large surface of the battery cell; An electrode assembly, at least a portion of which extends from the outside of the housing into the limiting space, is electrically connected to the electrode tab. The electrode assembly includes an adapter piece, which is placed within the limiting space and located between the electrode tab and the main body. The adapter piece is electrically connected to the electrode tab, and a protruding structure is provided on the side of the adapter piece facing away from the main body, the protruding structure abutting against the electrode tab. Along the arrangement direction of the bent portion and the main body, the thickness of the limiting space is D1, the thickness of the battery cell is D2, and the ratio of D1 to D2 is in the range of 0.05-0.

5.

2. The battery device as claimed in claim 1, characterized in that, The bent portion, after being bent, abuts against the tab portion on the side facing the main body.

3. The battery device as claimed in claim 2, characterized in that, It also includes a locking part, which is used to lock the relative position of the bent part relative to the main body part after bending.

4. The battery device as claimed in claim 3, characterized in that, The locking part is disposed on the main body of the insulating bracket, and at least a portion of the main body is disposed parallel to the large surface of the battery cell.

5. The battery device as claimed in claim 3, characterized in that, The locking part is disposed on the large surface of the housing; or... The locking part is disposed on the pole assembly located within the limiting space.

6. The battery device as claimed in claim 4, characterized in that, The locking part includes a hook, which is provided on the main body and engages with the side of the bent part away from the main body after bending.

7. The battery device as claimed in claim 6, characterized in that, The edge of the bent portion is provided with a protrusion, the protrusion protrudes towards the main body portion, and the side of the protrusion away from the main body portion is a groove; The hook engages with the bottom of the groove.

8. The battery device as claimed in claim 7, characterized in that, The locking part includes two hooks, which are arranged opposite to each other, and each hook is engaged with one end of the bent part.

9. The battery device according to any one of claims 1-8, characterized in that, The insulating support is a one-piece molded structure.

10. The battery device according to any one of claims 1-8, characterized in that, The limiting space has an opening that faces the electrode.

11. The battery device according to any one of claims 1-8, characterized in that, The main body is provided with a countersunk hole, the opening of which is located on the side of the main body facing the tab, and the bottom of which is provided with a through hole; The electrode assembly further includes an electrode post and a limiting piece. The electrode post is disposed outside the housing; the limiting piece is disposed inside the housing, and at least a portion of the limiting piece is embedded in the countersunk hole and passes through the through hole to electrically connect the electrode post to the electrode lug.

12. The battery device as claimed in claim 11, characterized in that, The adapter plate is electrically connected to the limiting plate.

13. The battery device according to any one of claims 1-8, characterized in that, The tabs extend from opposite sides of the large surface of the battery cell, and at least a portion of the tabs on each side are placed within the limiting space of the corresponding insulating support.

Images