Battery monomer and electric equipment with same

Abstract

The utility model relates to a battery monomer and electric equipment with the battery monomer, the battery monomer comprises at least one battery cell, the battery cell comprises a main body and a tab, the main body is provided with a first end face along a first direction, the tab comprises a root part, a bending part and a head part which are connected in sequence, and the root part of the tab is led out from the first end face of the main body; the adapter comprises a first connecting part and a second connecting part, the first connecting part is positioned on one side of the main body along the first direction, and the first connecting part is connected with the head part of the tab; the second connecting part is positioned on one side of the main body along a second direction, and the second direction is perpendicular to the first direction; the support comprises a supporting part and a shaping part, and the supporting part is provided with an abutting face in the second direction; at least one end of the supporting part in the second direction is connected with a shaping part. The shaping part is clamped between the root part and the head part of the tab, the bending part of the tab can be expanded outwards, the tab is prevented from being inserted inwards, and the shaping part and the second positioning part can limit the position of the bracket together after the core is closed, so that an auxiliary positioning function is realized.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery technology field especially relates to a battery monomer and electric equipment with it. BACKGROUND

[0002] The current technology of the battery cell has winding and laminating two kinds, and the blade battery adopts the laminating form to carry out two ends, but the winding efficiency is much greater than laminating, in order to improve the productivity, more and more blade batteries adopt the winding battery cell, and then the adapter is needed to turn the pole lug to the side. The adapter needs to be bent when the cover plate enters the shell, and the adapter is easy to move when being bent, thereby driving the pole lug to move, and there is the risk of tearing the pole lug.

[0003] Therefore, a battery monomer and electric equipment with it are needed, which can shape the pole lug, avoid the pole lug insertion and prevent the adapter movement. SUMMARY

[0004] In order to overcome the defects of the prior art, the utility model provides a battery monomer and electric equipment with it.

[0005] The utility model technical scheme is as follows:

[0006] A battery monomer comprises:

[0007] At least one battery cell comprises a main body and a pole lug, the main body has a first end face along a first direction, the pole lug comprises a root, a bending part and a head part connected in sequence, and the root of the pole lug is led out from the first end face of the main body.

[0008] An adapter comprises a first connecting part and a second connecting part, the first connecting part is located on one side of the main body along the first direction, and the first connecting part is connected with the head part of the pole lug, and the second connecting part is located on one side of the main body along a second direction, and the second direction is perpendicular to the first direction.

[0009] A support comprises a supporting part and a shaping part, the supporting part has an abutting face along the second direction, and at least one end of the supporting part along the second direction is connected with the shaping part.

[0010] Among them, the supporting part is placed on the first end face of the main body, the shaping part is arranged between the root and the head part of the pole lug, and in the second direction, one end of the first connecting part away from the second connecting part abuts against the abutting face of the supporting part.

[0011] As a further improvement of the utility model, one end of the first connecting part away from the second connecting part is provided with a first positioning part; the support part is provided with a second positioning part matched with the first positioning part at the position corresponding to the first positioning part, wherein, in the first positioning part and the second positioning part, one is a recessed part, and the other is a protruding part.

[0012] As a further improvement of the utility model, the support further comprises a blocking part, the blocking part and the support part are located on two sides of the shaping part in the second direction respectively, and the shaping part connects the blocking part and the support part; in the second direction, one end of the blocking part away from the shaping part abuts against the second connecting part.

[0013] As a further improvement of the utility model, the blocking part is limited between the first end face of the main body and the first connecting part of the adapter.

[0014] As a further improvement of the utility model, the head part of the tab is located between the shaping part and the first connecting part of the adapter; in the first direction, the first connecting part of the adapter does not protrude from the support part.

[0015] As a further improvement of the utility model, the support part is provided with a first recess on the side away from the main body, the support part is provided with a second recess on the side towards the main body, the first recess and the second recess are arranged at intervals, and the first recess and the second recess arranged adjacently are communicated through a channel.

[0016] As a further improvement of the utility model, the groove bottom of the first recess is provided with a plurality of exhaust holes.

[0017] As a further improvement of the utility model, further comprising a shell, the electric core and the support are accommodated in the shell; the shell has a first wall, the first wall is provided with an explosion-proof valve, wherein the support is located between the first wall and the main body of the electric core, and the explosion-proof valve at least partially overlaps the first recess in the orthographic projection of the first end face.

[0018] As a further improvement of the utility model, further comprising an insulating film, the insulating film has an accommodation cavity, the electric core and the support are accommodated in the accommodation cavity, and the insulating film and the support part of the support are heat fusion connected.

[0019] A kind of electric equipment, comprising the battery cell of above.

[0020] According to the above-mentioned scheme of the utility model, the utility model has the beneficial effects that:

[0021] The utility model discloses a battery monomer, which is designed with a support, so that the support can not only prevent the movement of the battery cell in the shell, but also reshape the tab to avoid the tab being inserted into the main body upside down, and the abutting surface of the support abuts against the first connecting part of the adapter, so that the position of the support can be positioned and quick assembly is realized, and the adapter can prevent the adapter piece from moving when being bent. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is the structure schematic diagram before the utility model core combination.

[0023] Figure 2 It is the structure schematic diagram after the utility model core combination.

[0024] Figure 3 It is the local enlarged view of A of the utility model.

[0025] Figure 4 It is the structure section view after the utility model core combination.

[0026] Figure 5 It is the structure schematic diagram of the support first angle of the utility model.

[0027] Figure 6 It is the local enlarged view of B of the utility model.

[0028] Figure 7 It is the local enlarged view of C of the utility model.

[0029] Figure 8 It is the structure schematic diagram of the support second angle of the utility model.

[0030] Figure 9 It is the local enlarged view of D of the utility model.

[0031] Figure 10 It is the structure schematic diagram of the adapter of the utility model.

[0032] Figure 11 It is the structure schematic diagram of the insulating film of the utility model.

[0033] Figure 12 It is the structure schematic diagram of the shell of the utility model.

[0034] Figure 13 It is the structure section view of the shell of the utility model.

[0035] Figure 14 It is the local enlarged view of E of the utility model.

[0036] In the figure: 1, the battery cell; 11, the main body; 12, the tab; 121, the root; 122, the bending part; 123, the head; 13, the first end face; 2, the adapter; 21, the first connecting part; 22, the second connecting part; 23, the first positioning part; 24, the third connecting part; 25, the fourth connecting part; 3, the bracket; 31, the supporting part; 311, the abutting surface; 312, the first groove; 313, the second groove; 314, the channel; 315, the exhaust hole; 32, the shaping part; 321, the first shaping surface; 322, the second shaping surface; 33, the second positioning part; 34, the blocking part; 341, the first blocking surface; 342, the second blocking surface; 343, the third groove; 4, the shell; 41, the explosion-proof valve; 5, the insulating film. DETAILED DESCRIPTION

[0037] The technical solutions of the present application will be described clearly and completely below in conjunction with the drawings. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0038] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0039] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances. In addition, the technical features involved in the different embodiments of the present application described below can be combined with each other as long as they do not conflict with each other.

[0040] Reference Figure 2 , 12 and Figure 11The utility model provides a kind of battery monomer, including at least one electric core 1, adapter 2, support 3 and shell 4, shell 4 has enclosed space, at least one electric core 1, adapter 2 and support 3 are all contained in shell 4 inside.

[0041] It can be understood that the first direction is defined as the height direction of the main body 11, the second direction is the length direction of the main body 11, and the third direction is the thickness direction of the main body 11. For example, when the electric core 1 is a winding type electric core, the height direction of the main body 11 is consistent with the winding axis direction of the winding type electric core, the thickness direction of the main body 11 is perpendicular to the flat portion of the winding type electric core, and the length direction of the main body 11 is consistent with the extension direction of the flat portion of the winding type electric core. The main body 11 includes a positive plate, a negative plate, and a separator separating the positive plate and the negative plate. The positive tab 12 is connected to the positive plate, and the negative tab 12 is connected to the negative plate. The first end surface 13 of the main body 11 refers to the side of the main body 11 from which the tab 12 is drawn.

[0042] Specific to the present embodiment, referring to Figure 12 , the shell 4 includes an outer shell and two end cap assemblies. Each end cap assembly includes an end cap and a pole provided on the end cap. The end caps of the two end cap assemblies seal the two openings along the second direction of the outer shell, respectively. The end caps of the two end cap assemblies and the outer shell form a closed space.

[0043] In addition, referring to Figure 1 -10, the utility model provides a kind of battery monomer, and further includes a support 3. The tab 12 includes a root portion 121, a bent portion 122 and a head portion 123 connected in sequence. The root portion 121 of the tab 12 is drawn from the first end surface 13 of the main body 11. The adapter 2 includes a first connecting portion 21 and a second connecting portion 22. The first connecting portion 21 is located on one side of the main body 11 along the first direction, and the first connecting portion 21 is connected to the head portion 123 of the tab 12. The second connecting portion 22 is located on one side of the main body 11 along the second direction, and the second direction is perpendicular to the first direction. The support 3 includes a supporting portion 31 and a shaping portion 32. The supporting portion 31 abuts against the electric core 1 to prevent the electric core 1 from vibrating. The supporting portion 31 has an abutting surface 311 along the second direction. At least one end of the supporting portion 31 along the second direction is connected to the shaping portion 32. The supporting portion 31 is disposed on the first end surface 13 of the main body 11. The shaping portion 32 is arranged between the root portion 121 and the head portion 123 of the tab 12. In the second direction, one end of the first connecting portion 21 away from the second connecting portion 22 abuts against the abutting surface 311 of the supporting portion 31.

[0044] It can be understood that the first connecting part 21 and the second connecting part 22 of the adapter 2 are located at different sides of the main body 11, and the first connecting part 21 is used for electrical connection with the tab 12. The supporting part 31 of the support 3 is a plate structure with a certain thickness, which can be limited between the first end face 13 of the main body 11 and the side wall of the shell 4 opposite to the first end face 13. The shaping part 32 of the support 3 can allow the tab 12 to be bent around. The first connecting part 21 and the shaping part 32 of the adapter 2 can be located between the root 121 and the head 123 of the tab 12, or only the shaping part 32 can be located between the root 121 and the head 123 of the tab 12.

[0045] The utility model discloses, the tab 12 can be bent around the shaping part 32, make the bending part 122 of the tab 12 after bending and the edge part of shaping part 32 more fit, further can make shaping part 32 open outwards the bending part 122 of tab 12, avoid tab 12 to insert into main body, and the first connecting part 21 is arranged in abutment with the abutment surface 311, so, on one hand, can position the setting position of support 3, convenient assembly, on the other hand, since the adapter 2 will be bent in the process that end cover and shell are closed, therefore, the first connecting part 21 is arranged in abutment with the abutment surface 311, can prevent the adapter 2 from moving in the bending process, further can prevent the adapter 2 from tearing the tab 12 in the bending process, in addition, since the supporting part of the support is limited between the first end face 13 of the main body 11 and the first wall of the shell 4 opposite to the first end face 13, therefore can prevent the battery from moving in the shell.

[0046] It should be noted that, in order to ensure that the support and the battery cell are insulated, the support is made of insulating material, and in order to ensure that the support is easy to manufacture, the support is an integral structure. As shown in Figure 6 , in order to make the structure of the support 3 more simple, the shaping part 32 is fixed to the abutment surface 311 of the supporting part 31.

[0047] It should be noted that, as shown in Figure 10 , the adapter 2 further comprises a third connecting part 24 connected to the second connecting part 22 and a fourth connecting part 25 connected to the third connecting part 24, the fourth connecting part 25 is used for connecting with the pole, the fourth connecting part 25 and the third connecting part 24 can be bent around the connection between the fourth connecting part 25 and the third connecting part 24, the second connecting part 22 and the third connecting part 24 can be bent around the connection between the second connecting part 22 and the third connecting part 24, and the second connecting part 22 and the first connecting part 21 can be bent around the connection between the second connecting part 22 and the first connecting part 21.

[0048] In the embodiment, as shown in Figure 1 , Figure 2 and Figure 5As shown, the support part 31 has two oppositely arranged abutting surfaces 311 in the second direction, and the two abutting surfaces 311 of the support part 31 in the second direction are connected with the shaping parts 32. By designing the first connecting parts 21 of the two adapter pieces 2 to abut with the two abutting surfaces 311 respectively, that is, the support part 31 of the bracket 3 is clamped between the first connecting parts 21 of the two adapter pieces 2, thereby realizing quick positioning while ensuring that the support part 31 does not move during the bending of the adapter piece 2; by designing the two shaping parts 32, the two tabs 12 can be shaped at the same time, which is more efficient.

[0049] Further, the head 123 of the tab 12 is located between the shaping part 32 and the first connecting part 21 of the adapter piece 2, and in the first direction, the first connecting part 21 of the adapter piece 2 does not protrude from the support part 31.

[0050] As can be understood, the distance between the side surface of the first connecting part 21 of the adapter piece 2 away from the main body 11 to the first end surface 13 of the main body 11 is less than or equal to the thickness of the support part 31.

[0051] In this embodiment, the head 123 of the tab 12 is clamped between the first connecting part 21 of the adapter piece 2 and the shaping part 32, so that not only can the head of the tab 12 be prevented from warping, improving the adhesion of the tab 12 to the adapter piece 2, but also the length of the tab 12 extending from the main body 11 can be minimized, reducing production costs.

[0052] In addition, in the embodiment, since in the first direction, the first connecting part 21 of the adapter piece 2 does not protrude from the support part 31, the support part 31 of the bracket 3 can prevent the main body 11 from moving.

[0053] Specifically, in this embodiment, Figure 3 As shown, in the first direction, the side of the first connecting part 21 of the adapter piece 2 away from the main body 11 is flush with the side of the support part 31 away from the main body 11.

[0054] Referring to Figure 5 -10, as an embodiment of the utility model, the first connecting part 21 is provided with a first positioning part 23 away from the second connecting part 22; the support part 31 is provided with a second positioning part 33 matched with the first positioning part 23 at the position corresponding to the first positioning part 23, and among the first positioning part 23 and the second positioning part 33, one is a recessed part and the other is a protruding part.

[0055] As can be understood, when the first connecting part 21 is provided with a recessed part, the support part 31 is provided with a protruding part; and when the first connecting part 21 is provided with a protruding part, the support part 31 is provided with a recessed part.

[0056] In this embodiment, by designing the cooperation of the first positioning part 23 and the second positioning part 33, on the one hand, the assembly position of the adapter 2 and the support 3 is positioned, facilitating quick assembly; on the other hand, the relative position of the adapter 2 and the support 3 is limited, that is, after the adapter 2 and the support 3 are assembled, due to the plug-in cooperation of the first positioning part 23 and the second positioning part 33, and the abutting arrangement of the first connecting part 21 of the adapter 2 and the abutting surface 311, the adapter 2 and the support 3 cannot easily move in the third direction and the second direction, so that the movement of the adapter 2 can be better prevented during the bending process of the adapter 2, and the working stability and reliability are improved.

[0057] It should be noted that the shapes of the recessed part and the protruding part are various, such as circular, rectangular, triangular, etc., preferably, the contact surface of the protruding part and the recessed part is arc surface, which can avoid damage to the protruding part and the recessed part caused by sharp corners, ensure the use quality of both and improve the service life of both.

[0058] It should be further noted that, referring to Figure 6 , in order to make the structure design of the support 3 more reasonable, the second positioning part 33 is arranged on the abutting surface 311 of the supporting part 31, and the second positioning part 33 is located on the side of the shaping part 32 away from the main body 11; in this embodiment, referring to Figure 6 , the abutting surface 311 of the supporting part 31 is protruded in the direction close to the adapter 2 to form a protruding part, and the protruding part is arranged on the shaping part 32.

[0059] As an embodiment of the utility model, the support 3 further comprises a blocking part 34, the blocking part 34 and the supporting part 31 are located on the two sides of the shaping part 32 in the second direction, and the shaping part 32 connects the blocking part 34 and the supporting part 31; in the second direction, the end of the blocking part 34 away from the shaping part 32 abuts against the second connecting part 22.

[0060] In this embodiment, by abutting the blocking part 34 and the second connecting part 22, on the one hand, the bending position of the second connecting part 22 of the adapter 2 relative to the bending rotation of the first connecting part 21 is limited, and on the other hand, the blocking part 34 provides a force point for the bending of the adapter 2, so that the bending is more convenient.

[0061] Further, the blocking part 34 is limited between the first end surface 13 of the main body 11 and the first connecting part 21 of the adapter 2.

[0062] It can be understood that the blocking part 34 not only abuts against the first end surface 13 of the main body 11, but also abuts against the first connecting part 21 of the adapter 2.

[0063] In this embodiment, the blocking portion 34 and the support portion 31 are both in contact with the first end surface 13 of the main body 11, so that the shaping portion 32 is placed more stably, thereby better maintaining the shape of the tab 12 after being shaped by the shaping portion 32; in addition, the blocking portion 34 and the first connecting portion 21 of the adapter 2 are in contact, which can prevent the first connecting portion 21 of the adapter 2 from moving towards the main body 11 of the battery cell 1, and further prevent the adapter 2 from moving when being bent.

[0064] Specifically, in this embodiment, referring to Figure 5 As shown in the drawings, the bracket 3 comprises two blocking portions 34 and a support portion 31 located between the two blocking portions 34, and a shaping portion 32 is connected between each blocking portion 34 and the support portion 31. Each blocking portion 34 is in contact with the second connecting portion 22 of the corresponding adapter 2, and each blocking portion 34 is in contact with the first end surface of the main body 11 and the first connecting portion 21 of the adapter 2, respectively.

[0065] It should be noted that, in order to facilitate the injection molding of the bracket and ensure the consistency of the wall thickness of the bracket, a material reduction groove 343 is provided on the side of the blocking portion 34 away from the main body 11.

[0066] As an embodiment of the present application, referring to Figure 5 and Figure 7 As shown in the drawings, the support portion 31 is provided with a first groove 312 on the side away from the main body 11, and a second groove 313 on the side towards the main body 11. The first groove 312 and the second groove 313 are spaced apart, and the adjacent first groove 312 and second groove 313 are connected by a channel 314.

[0067] When the battery cell 1 experiences thermal runaway, the gas in the battery cell 1 can be discharged in time through the second groove 313, the channel 314 and the first groove 312, avoiding the accumulation of high-temperature gas inside the battery monomer and causing danger, and improving the safety and stability of use.

[0068] It should be noted that, in order to allow more gas to enter the second groove 313 more quickly, the second groove 313 penetrates the support portion 31 at both ends along the third direction. It should also be noted that, in order to allow the gas to be discharged in time, the first groove 312 can be provided with multiple first grooves 312, and the second groove 313 is provided between two adjacent first grooves 312. Specifically, the first groove 312 is provided with five first grooves 312, and the second groove 313 is provided with four second grooves 313.

[0069] Further, in order to allow more gas to enter the first groove 312 more quickly, the bottom of the first groove 312 is provided with a plurality of exhaust holes 315, which have a similar effect to the second groove 313 and the channel 314, and are also used to guide the gas in the battery cell 1 to be discharged, further improving the exhaust and heat dissipation functions of the battery monomer, and further improving the safety and stability of use.

[0070] It should be noted that the plurality of exhaust holes 315 are evenly distributed on the groove bottom of the first groove 312.

[0071] Specific to the embodiment, referring to Figure 12 -14, in order to more timely exhaust gas, the shell 4 has a first wall, the first wall is provided with an explosion-proof valve 41, wherein the bracket 3 is located between the first wall and the main body 11 of the electric core 1, the orthographic projection of the first end face 13 and the orthographic projection of the first groove 312 in the first end face 13 at least partially overlap, preferably, the orthographic projection of the first end face 13 and the orthographic projection of the first groove 312 in the first end face 13 completely overlap.

[0072] In this embodiment, by allowing the explosion-proof valve 41 to directly communicate with the first groove 312, the gas entering the first groove 312 from the second groove 313 and the channel 314, and the gas entering the first groove 312 from the exhaust hole 315, can all finally enter the first groove 312 directly communicating with the explosion-proof valve 41 through the channel 314, thereby enabling the gas to be timely discharged from the explosion-proof valve 41, effectively improving the explosion-proof property of the battery monomer, and improving the use safety and stability.

[0073] Referring to Figure 11 , as an embodiment of the utility model, referring to Figure 11 It is shown that the battery monomer comprises an insulating film 5, the insulating film 5 has a containing cavity, the containing cavity is provided with an opening along both ends in the second direction;The electric core 1 and the bracket 3 are all contained in the containing cavity, and the insulating film 5 and the support part 31 of the bracket 3 are hot melt connected.

[0074] Specifically, the insulating film 5 comprises a first film piece, a second film piece, a third film piece, a fourth film piece and a fifth film piece connected in sequence, the second film piece and the fourth film piece are oppositely arranged along the third direction, and are respectively wrapped on both sides of the main body 11 along the third direction;The third film piece is wrapped on the side of the main body 11 away from the first end face;The first film piece and the fifth film piece are both placed in the bracket 3, and the first film piece and the fifth film piece at least partially overlap and are both hot melt connected with the bracket 3.

[0075] In the embodiment, the electric core 1 and the bracket 3 can be wrapped into a whole by the insulating film 5, the assembly strength of the electric core 1 and the bracket 3 is enhanced, and the insulating performance of the battery monomer is provided, the normal work of the battery monomer is ensured, and the use safety and stability of the battery monomer are improved.

[0076] It should be noted that, in order to avoid the insulating film 5 affecting the discharge of gas from the exhaust valve, a through hole is arranged in the part of the insulating film 5 located on the first wall of the shell 4 and the bracket 3, and the through hole is opposite the explosion-proof valve.

[0077] The installation sequence of the battery monomer is as follows:

[0078] First step: weld the positive pole lug 12 of two battery cells 1 to the first connecting part 21 of the positive adapter 2, and weld the negative pole lug 12 of two battery cells 1 to the first connecting part 21 of the negative adapter 2;

[0079] Second step: install the bracket 3, and let the positive head 123 be between the first connecting part 21 of the positive adapter 2 and the shaping part 32 at one end of the bracket 3, let the negative head 123 be between the first connecting part 21 of the negative adapter 2 and the shaping part 32 at the other end of the bracket 3, and let the supporting part 31 be clamped between the first connecting part 21 of the positive adapter 2 and the first connecting part 21 of the negative adapter 2;

[0080] Third step: complete the combination of two battery cells 1, so that the lug 12 of the battery cell 1 is bent around the shaping part 32;

[0081] Fourth step: wrap the two battery cells 1 and the bracket 3 together with the insulating film 5;

[0082] Fifth step: put the two battery cells 1 and the bracket 3 wrapped with the insulating film 5 into the shell 4 together;

[0083] Sixth step: connect the positive adapter 2 and the negative adapter 2 with the pole of the two end cover assemblies respectively;

[0084] Seventh step: bend the positive adapter 2 so that the end cover in one end cover assembly can be embedded into one opening of the shell 4, and bend the negative adapter 2 so that the end cover in the other end cover assembly can be embedded into the other opening of the shell 4;

[0085] Eighth step: weld the end cover in the two end cover assemblies with the shell 4 together.

[0086] The utility model provides a kind of electric equipment, including above-mentioned battery monomer.

[0087] As described above, the utility model provides a kind of battery monomer and the electric equipment with it, by design bracket 3, so that it not only can prevent battery cell 1 from moving in shell 4, but also can be shaped to lug 12, avoid lug 12 to insert into main body 11, and because the abutting surface 311 of bracket 3 is abutted with the first connecting part 21 of adapter 2, not only can the position of bracket 3 be positioned, realize quick assembly, and adapter 2 can prevent adapter 2 from moving when being bent.

[0088] It needs to be emphasized that: the above is only the preferred embodiment of the utility model, and does not limit the utility model in any form, and any simple modification, equivalent change and modification of the above embodiment according to the technical essence of the utility model still belongs to the range of the technical scheme of the utility model.

Claims

1. A battery cell, characterized in that, include: At least one battery cell (1) includes a body (11) and a tab (12), the body (11) having a first end face (13) along a first direction, the tab (12) including a root (121), a bend (122) and a head (123) connected in sequence, the root (121) of the tab (12) extending out from the first end face (13) of the body (11); The adapter (2) includes a first connecting part (21) and a second connecting part (22). The first connecting part (21) is located on one side of the main body (11) along a first direction, and the first connecting part (21) is connected to the head (123) of the electrode (12). The second connecting part (22) is located on one side of the main body (11) along a second direction, and the second direction is perpendicular to the first direction. The support (3) includes a support portion (31) and a shaping portion (32), wherein the support portion (31) has an abutment surface (311) along a second direction; and the shaping portion (32) is connected to at least one end of the support portion (31) along the second direction. The support portion (31) is placed on the first end face (13) of the main body (11); the shaping portion (32) is inserted between the root (121) of the tab (12) and the head (123); in the second direction, the end of the first connecting portion (21) away from the second connecting portion (22) abuts against the abutting surface (311) of the support portion (31).

2. The battery cell according to claim 1, characterized in that, The first connecting part (21) is provided with a first positioning part (23) at one end away from the second connecting part (22); the support part (31) is provided with a second positioning part (33) at the position corresponding to the first positioning part (23) and engaging with the first positioning part (23), wherein, of the first positioning part (23) and the second positioning part (33), one is a recessed part and the other is a protruding part.

3. The battery cell according to claim 1, characterized in that, The bracket (3) further includes a blocking part (34), the blocking part (34) and the support part (31) are located on both sides of the shaping part (32) in the second direction, and the shaping part (32) connects the blocking part (34) and the support part (31); in the second direction, the end of the blocking part (34) away from the shaping part (32) abuts against the second connecting part (22).

4. The battery cell according to claim 3, characterized in that, The blocking part (34) is positioned between the first end face (13) of the main body (11) and the first connecting part (21) of the adapter (2).

5. The battery cell according to claim 1, characterized in that, The head (123) of the tab (12) is located between the shaping part (32) and the first connecting part (21) of the adapter (2); in the first direction, the first connecting part (21) of the adapter (2) does not protrude from the support part (31).

6. The battery cell according to claim 1, characterized in that, The support part (31) has a first groove (312) on the side away from the main body (11), and a second groove (313) on the side facing the main body (11). The first groove (312) and the second groove (313) are spaced apart, and the adjacent first groove (312) and second groove (313) are connected by a channel (314).

7. The battery cell according to claim 6, characterized in that, The bottom of the first groove (312) is provided with multiple vent holes (315).

8. The battery cell according to claim 6 or 7, characterized in that, It also includes a housing (4), in which the battery cell (1) and the bracket (3) are housed; the housing (4) has a first wall, on which an explosion-proof valve (41) is provided, wherein the bracket (3) is located between the first wall and the body (11) of the battery cell (1), and the orthographic projection of the explosion-proof valve (41) on the first end face (13) and the orthographic projection of the first groove (312) on the first end face (13) at least partially overlap.

9. The battery cell according to any one of claims 1 to 7, characterized in that, It also includes an insulating film (5) having a receiving cavity, in which the battery cell (1) and the bracket (3) are housed, and the supporting portion (31) of the insulating film (5) and the bracket (3) are thermally fused together.

10. An electrical appliance, characterized in that, Including the battery cell described in any one of claims 1 to 9.

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