Battery and electric equipment

Abstract

The utility model relates to a battery and electric equipment, the battery comprises a plurality of battery monomers and a connecting sheet used for connecting the plurality of battery monomers in series or in parallel, each battery monomer comprises a pole, and a first tooth structure is arranged on one side, facing the connecting sheet, of the pole; a second tooth structure is arranged on one side, facing the pole, of the connecting sheet; the pole of the single battery is electrically connected with the connecting piece, the first tooth structure is matched with the second tooth structure in an inserting manner, and the connecting piece is connected with the single battery through a buckle assembly. The first tooth structure and the second tooth structure are matched and inserted, so that the electric connection between the connecting sheet and the pole is realized, and the reliability is relatively high; quick detachable connection between the connecting sheet and the pole is realized through the buckle assembly, and meanwhile, a clinging pressure is provided between the connecting sheet and the pole, so that the reliability of electric connection is further improved; and when a certain battery monomer is damaged, the damaged battery monomer can be quickly replaced, and other battery monomers are not influenced.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery manufacturing technical field especially, it is a kind of battery and electric equipment. BACKGROUND

[0002] In the battery field, lithium ion battery is widely used in portable electronic products such as computer, mobile phone and other portable electronic products due to high output voltage, high specific capacity, high safety and other advantages, and gradually becomes the leading power supply of electric vehicle (EV) and hybrid electric vehicle (HEV).

[0003] At present, in new energy industry, battery pack is discarded in the design process The traditional module structure, no longer use the mode of end plate and side plate, directly arrange battery in box, increase the number of battery placed in limited space, place battery according to order, use conductive row to connect positive and negative electrode of battery cell by laser welding;The biggest disadvantage of this connection mode is that there is no mistake, when welding problem or battery damage, cannot be replaced alone, the whole battery pack needs to be scrapped, causing cost waste. SUMMARY

[0004] The utility model solves the technical problem that a battery and an electric device can be replaced alone when the battery has a problem.

[0005] The technical scheme adopted by the utility model to solve its technical problems is:

[0006] A battery includes a plurality of battery monomers, a connecting sheet for connecting the plurality of battery monomers in series or parallel,

[0007] The battery monomer includes a pole, and the pole is provided with a first tooth structure on the side facing the connecting sheet;The connecting sheet is provided with a second tooth structure on the side facing the pole;The pole of the battery monomer and the connecting sheet are electrically connected, wherein the first tooth structure and the second tooth structure are inserted and matched, and the connecting sheet and the battery monomer are connected by a buckle assembly.

[0008] Further specifically, a receiving cavity is formed between the pole of the battery monomer and the connecting sheet;The receiving cavity is configured to accommodate and abut the voltage acquisition part of the flexible circuit board.

[0009] Further specifically, an extrusion protrusion is provided in the receiving cavity and on the side of the connecting sheet facing the pole, and the extrusion protrusion is configured to abut the voltage acquisition part of the flexible circuit board.

[0010] Further, a bearing surface is arranged in the accommodating cavity and on the pole, and configured to support a voltage acquisition part of a flexible circuit board; and a recess is arranged on the bearing surface of the pole at a position opposite to the extruded protrusion.

[0011] Further, the pole has a first end surface arranged towards the connecting piece; the connecting piece has a second end surface arranged towards the pole, and the first end surface of the pole is recessed to form the first tooth structure; and the second end surface of the connecting piece is protruded to form the second tooth structure.

[0012] Further, the first tooth structure comprises at least one tooth groove, each of which comprises a first vertical surface perpendicular to the first end surface of the pole and a first inclined surface arranged obliquely to the first vertical surface; the second tooth structure comprises at least one protruding tooth, each of which comprises a second vertical surface perpendicular to the second end surface of the connecting piece and a second inclined surface arranged obliquely to the second vertical surface; the protruding tooth and the tooth groove are inserted into each other, and the first vertical surface and the second vertical surface are in contact, and the second inclined surface and the first inclined surface are in contact.

[0013] Further, the first tooth structure is arranged in two groups, and the tooth shapes of the tooth grooves of the two groups of the first tooth structure are arranged oppositely; the second tooth structure is arranged in two groups, and the tooth shapes of the protruding teeth of the two groups of the second tooth structure are arranged oppositely; and the first tooth structure and the second tooth structure are in one-to-one correspondence.

[0014] Further, the buckle assembly comprises a first clamping member and a second clamping member, the battery monomer comprises an insulating member sleeved on the pole, the first clamping member and the insulating member are integrally formed; and the second clamping member and the connecting piece are integrally formed.

[0015] Further, the first clamping member comprises an insertion part and a connecting arm connected with the insertion part, the connecting arm is connected with the insulating member; the connecting arm is provided with a plurality of clamping holes; the second clamping member comprises a mounting hole and a clamping protrusion, the mounting hole is arranged on the connecting piece, the connecting piece has a hole peripheral wall surrounding the mounting hole, the hole peripheral wall has oppositely arranged first and second hole walls, the first hole wall of the connecting piece is provided with a clamping protrusion clamping matched with the clamping hole; and a gap is formed between the second hole wall of the connecting piece and the clamping protrusion for the insertion part to pass through.

[0016] A power utilization device comprises the above-mentioned battery.

[0017] The utility model discloses beneficial effect is: the utility model discloses a first tooth structure is established to the pole, sets up the second tooth structure on the connecting piece, and the first tooth structure and the second tooth structure carry out cooperation and insert, realize the electric connection of connecting piece and pole and the reliability is higher, through the buckle assembly, realize the quick detachable connection between connecting piece and pole, provide the close pressure between connecting piece and pole simultaneously, further improve the reliability of electric connection, when some battery monomer breaks down, can carry out quick replacement, and will not cause the influence to other battery monomers. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is the structural schematic diagram of battery of the utility model;

[0019] Figure 2 It is the assembly structure schematic diagram of connecting piece, pole and insulating piece of the utility model;

[0020] Figure 3 It is the assembly sectional structure schematic diagram of connecting piece, pole and insulating piece of the utility model;

[0021] Figure 4 It is the split structure schematic diagram of connecting piece, pole and insulating piece of the utility model;

[0022] Figure 5 It is the assembly structure schematic diagram of pole and insulating piece of the utility model;

[0023] Figure 6 It is Figure 4 The enlarged structure schematic diagram of A site in;

[0024] Figure 7 It is the structural schematic diagram of connecting piece of the utility model;

[0025] Figure 8 It is Figure 7 The enlarged structure schematic diagram of B site in;

[0026] Figure 9 It is the three-dimensional structure schematic diagram of connecting piece of the utility model;

[0027] Figure 10 It is the assembly process schematic diagram of connecting piece, pole and insulating piece of the utility model;

[0028] Figure 11 It is the assembly schematic diagram of the voltage acquisition part 40 of pole and flexible circuit board in the utility model.

[0029] In the figure: 10, the pole; 11, the first tooth structure; 111, the first vertical surface; 112, the first inclined surface; 12, the accommodating cavity; 13, the recess; 14, the first end surface; 20, the connecting piece; 21, the second tooth structure; 211, the second vertical surface; 212, the second inclined surface; 22, the extrusion protrusion; 23, the second clamping piece; 231, the mounting hole; 232, the clamping convex; 25, the second end surface; 30, the insulating piece; 31, the first clamping piece; 311, the insertion part; 312, the connecting arm; 32, the clamping hole; 40, the voltage collection part; 100, the battery monomer. DETAILED DESCRIPTION

[0030] 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 the present application.

[0031] In the description of the present application, it should be noted that the orientations or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the orientations or positional relationships 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 the purpose of description, and cannot be understood as indicating or implying relative importance.

[0032] 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 fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or the communication inside two elements. For those skilled in the art, the specific meanings 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.

[0033] The present application provides a battery, such as Figure 1 - Figure 11As shown, when multiple battery cells 100 are electrically connected together for operation, if one of the battery cells 100 is damaged, it can be directly replaced. It adopts a detachable structure, which makes replacement convenient and quick. The flexible circuit board in this application is an FPC board, which has high reliability and excellent flexibility. It is a printed circuit board with high wiring density, light weight and thin thickness.

[0034] like Figure 1 The battery shown includes a plurality of battery cells 100 and connecting pieces 20 for connecting the plurality of battery cells 100 in series or in parallel. The plurality of battery cells 100 can be connected in series, in parallel, or in a series-parallel combination to form a corresponding battery to meet the different needs of enterprises.

[0035] Among them, such as Figure 2 and Figure 3 As shown, the battery cell 100 includes a terminal post 10, a cell, and a casing. The casing is provided with a positive terminal post 10 and a negative terminal post 10. At least one of the positive and negative terminal posts 10 is insulated from the casing. Preferably, both the positive and negative terminal posts 10 are insulated from the casing. The positive and negative terminal posts 10 can be disposed on the same wall of the casing, or they can be disposed on two non-coplanar walls of the casing. Specifically, see [link to documentation]. Figure 1 As shown, the housing has a first wall and a second wall arranged perpendicularly to each other. The positive polarity terminal 10 and the negative polarity terminal 10 are respectively disposed on the first wall and the second wall of the housing. A first tooth structure 11 is provided on one side of the terminal 10. The first tooth structure 11 is located on the side of the terminal 10 facing the connecting piece 20. In this application, the first tooth structure 11 is located on the surface of the terminal 10 away from the battery cell.

[0036] Continuing, a battery typically comprises multiple battery cells 100, meaning the connecting piece 20 is used to connect two adjacent battery cells 100. Therefore, a second tooth structure 21 is provided on the connecting piece 20, with the second tooth structure 21 located on the side of the connecting piece 20 facing the terminal post 10. Preferably, the connecting piece 20 has second tooth structures 21 on both sides along its length. In this application, the second tooth structure 21 is located on the surface of the connecting piece 20 near the battery cell 100.

[0037] In this application, the first tooth structure 11 and the second tooth structure 21 are inserted and engaged to achieve positioning. At the same time, in order to make the connection between the connecting piece 20 and the battery cell 100 more secure, the connecting piece 20 and the battery cell 100 are connected in a detachable manner by a snap-fit ​​assembly, which facilitates quick disassembly and quick assembly. Here, the connection is not limited to snap-fit ​​assembly; it can also be connected by bolts, riveting, etc., to achieve a detachable connection, which will not be elaborated here.

[0038] In order to realize the plug-in connection of the first tooth structure 11 and the second tooth structure 21, the first tooth structure 11 and the second tooth structure 21 are designed as a recess structure and a protrusion structure respectively, or both the first tooth structure 11 and the second tooth structure 21 have the recess structure and the protrusion structure.

[0039] Specifically, as shown in Figure 5 and Figure 7 , the pole 10 has a first end face 14 facing the connecting piece 20, the connecting piece 20 has a second end face 25 facing the pole 10, the first tooth structure 11 is recessed on the first end face 14 of the pole 10, the second tooth structure 21 is protruded on the second end face 25 of the connecting piece 20, and the first tooth structure 11 is plugged into the second tooth structure 21 to realize the electrical connection between the pole 10 and the connecting piece 20.

[0040] It should be noted that the first tooth structure 11 formed by recessing and the second tooth structure 21 formed by protruding can be arranged in any direction perpendicular to the thickness direction of the connecting piece 20. Specifically, as shown in Figure 4 and Figure 9 , the second tooth structure 21 is arranged along the length direction of the connecting piece 20, and the length of the second tooth structure 21 is equal to the length of the connecting piece 20. Correspondingly, the first tooth structure 11 is arranged along the length direction of the connecting piece 20, and both ends of the first tooth structure 11 along the length direction of the connecting piece 20 penetrate the pole 10.

[0041] In some embodiments, in order to facilitate the plug-in connection of the first tooth structure 11 and the second tooth structure 21, as shown in Figure 6 and Figure 8 , the first tooth structure 11 includes at least one tooth groove, each tooth groove includes a first vertical surface 111 perpendicular to the first end face 14 of the pole 10 and a first inclined surface 112 inclined to the first vertical surface 111, and the second tooth structure 21 includes at least one protruding tooth, each protruding tooth includes a second vertical surface 211 perpendicular to the second end face 25 of the connecting piece 20 and a second inclined surface 212 inclined to the second vertical surface 211; the protruding tooth is inserted into the tooth groove, and the first vertical surface 111 and the second vertical surface 211 are in contact and fit, and the second inclined surface 212 and the first inclined surface 112 are in contact and fit.

[0042] When the protruding tooth and the tooth groove are matched, the second vertical surface 211 of the protruding tooth can be pushed to the first vertical surface 111 of the tooth groove through the matching between the first inclined surface 112 and the second inclined surface 212, so that the first vertical surface 111 and the second vertical surface 211 are tightly attached, and the reliability of the electrical connection is improved.

[0043] It should be noted that in order to make the first tooth structure 11 and the second tooth structure 21 more stable, the first tooth structure 11 is designed to include a plurality of tooth grooves, and the second tooth structure 21 is designed to include a plurality of protruding teeth, and the tooth grooves and the protruding teeth are in one-to-one correspondence, for example, as shown in Figure 5 and Figure 7 , the tooth grooves are provided with ten, and the protruding teeth are also provided with ten. Of course, the first tooth structure 11 and the second tooth structure 21 can also be designed to include a plurality of tooth grooves and a plurality of protruding teeth, and the tooth grooves in the first tooth structure 11 and the protruding teeth in the second tooth structure 21 are in one-to-one correspondence, and the protruding teeth in the first tooth structure 11 and the tooth grooves in the second tooth structure 21 are in one-to-one correspondence.

[0044] Further, in order to position the connecting piece 20 and the pole 10, as shown in Figure 5 and Figure 7 , the first tooth structure 11 is provided with two groups, and each group of the first tooth structure 11 has at least one tooth groove, and the tooth shapes of the tooth grooves in the two groups of the first tooth structure 11 are oppositely arranged, that is, the first inclined surface 112 of the first tooth structure A and the first inclined surface 112 of the first tooth structure B are oppositely inclined; the second tooth structure 21 is also provided with two groups, and each group of the second tooth structure 21 has at least one protruding tooth, and the tooth shapes of the protruding teeth in the two groups of the second tooth structure 21 are oppositely arranged, that is, the second inclined surface 212 of the second tooth structure A and the second inclined surface 212 of the second tooth structure B are oppositely inclined; the first tooth structure 11 and the second tooth structure 21 are in one-to-one correspondence.

[0045] Since the connection of the connecting piece 20 and the pole 10 can only be achieved when the first inclined surface 112 of the first tooth structure A and the second inclined surface 212 of the second tooth structure A are mated, and the first inclined surface 112 of the first tooth structure B and the second inclined surface 212 of the second tooth structure B are mated, on the one hand, the first tooth structure 11 and the second tooth structure 21 have a centering effect when they are mated, and the connection is more secure, further improving the reliability of the electrical connection, on the other hand, the first tooth structure 11 and the second tooth structure 21 are mated to achieve the rapid positioning of the connecting piece 20 and the pole 10.

[0046] In some embodiments, as shown in Figure 2 - Figure 5 , the buckle assembly includes a first clamping piece 31 and a second clamping piece 23, and the battery monomer 100 includes an insulating piece 30 sleeved outside the pole 10, the first clamping piece 31 is arranged on the insulating piece 30, and the second clamping piece 23 is arranged on the connecting piece 20.

[0047] It can be understood that when the positive pole 10 and the negative pole 10 are both insulated from the shell, in order to insulate the outer surface of the pole 10 and the shell, as shown in Figure 4As shown, the battery cell 100 further comprises an insulating piece 30, which is sleeved on the part of the pole 10 protruding from the shell, and the insulating piece 30 is clamped between the part of the pole 10 protruding from the insulating piece 30 and the outer surface of the shell.

[0048] At the same time of the insertion fit of the second tooth structure 21 on the connecting piece 20 and the first tooth structure 11 on the pole 10, the second clamping piece 23 on the connecting piece 20 and the first clamping piece 31 on the battery cell 100 are clamped, and the first tooth structure 11 has a pressure in the direction of the pole 10 through the clamping fit of the first clamping piece 31 and the second clamping piece 23, which ensures the close fit of the first tooth structure 11 and the second tooth structure 21.

[0049] It should be noted that, in order to facilitate processing and simplify the production process, the first clamping piece 31 and the insulating piece 30 are integrally formed, and the second clamping piece 23 and the connecting piece 20 are integrally formed.

[0050] It should be further noted that, in order to make the connection of the connecting piece 20 and the pole 10 more stable, and to make the arrangement of the second clamping piece 23 and the second tooth structure 21 more reasonable, referring to Figure 4 As shown, both ends of the connecting piece 20 along the length direction thereof are provided with two second clamping pieces 23, and the two second clamping pieces 23 provided on the same end of the connecting piece 20 are located on the two sides of the second tooth structure 21, respectively. Correspondingly, each pole 10 in the battery cell is provided with one first clamping piece 31 on each side thereof.

[0051] There are various specific structures of the first clamping piece 31 and the second clamping piece 23, and in the embodiment, referring to Figure 3 、 Figure 4 、 Figure 5 and Figure 9 , the first clamping piece 31 comprises an insertion part 311 and a connecting arm 312 connected with the insertion part 311, the connecting arm 312 is connected on the insulating piece 30, and a plurality of clamping holes 32 are provided on the connecting arm 312; the second clamping piece 23 comprises a mounting hole 231 and a clamping protrusion 232, the mounting hole 231 is provided on the connecting piece 20, the connecting piece 20 has a hole peripheral wall constituting the mounting hole 231, the mounting hole 231 has oppositely arranged first and second hole walls, and the first hole wall of the connecting piece 20 is provided with the clamping protrusion 232 for clamping fit with the clamping hole 32; a gap for the insertion part 311 to pass through is formed between the second hole wall of the connecting piece 20 and the clamping protrusion 232.

[0052] It can be understood that the thickness of the connecting arm 312 is smaller than that of the insertion part 311, and the connecting arm 312 can deform under stress, and can be elastically reset after the stress is removed.

[0053] In order to ensure that the connecting piece 20 is pressed onto the pole 10 through the fit of the clamping protrusion 232 and the clamping hole 32, as shown inFigure 10 As shown in the figure, when the insertion part 311 of the first clamping piece 31 is inserted into the gap between the second hole wall of the connecting piece 20 and the clamping convex 232, the clamping convex 232 deforms the insertion part 311 and the connecting arm 312 in a direction away from the first hole wall; after the connecting piece 20 contacts the pole column 10, the clamping convex 232 continues to deform in the direction of the pole column; when the insertion part 311 of the first clamping piece 31 passes through the gap between the second hole wall of the connecting piece 20 and the clamping convex 232, the connecting arm 312 elastically recovers, that is, the connecting arm 312 resets in a direction close to the first hole wall, and the clamping convex 232 and the clamping hole 32 on the connecting arm 312 are inserted; at this time, the clamping convex 232 has an elastic reset tendency, which makes the connecting piece 20 tightly adhere to the pole column 10, the clamping of the first clamping piece 31 and the second clamping piece 23 is fast and firm, and the stability of the electrical connection is ensured.

[0054] It should be noted that, in order to enable the insertion part 311 to pass through the mounting hole 231, and in order to enable the connecting arm 312 to be inserted into the mounting hole 231, in the embodiment, the length of the mounting hole 231 is slightly greater than the length of the insertion part 311 and greater than the length of the connecting arm 312 in the length direction of the connecting piece 20; and the first tooth structure 11 and the second tooth structure 21 both extend in the length direction of the connecting piece 20; thus, when the two battery monomers 100 arranged adjacent to each other both expand in the thickness direction thereof, that is, in the length direction of the connecting piece 20, the connecting piece 20 and the pole column 10 of the battery monomer 100 will not be affected even if a relative displacement occurs.

[0055] It should be further noted that, in the embodiment, the mounting hole 231 is rectangular in the top view, and the two long sides of the rectangle are the first hole wall and the second hole wall arranged opposite to each other, the clamping convex 232 is arranged on the first hole wall and cooperates with the clamping hole 32; a gap is formed between the second hole wall of the connecting piece 20 and the clamping convex 232, which is used for the insertion part 311 to pass through, so as to facilitate the clamping convex 232 to move to the position of the clamping hole 32 for cooperation. At the same time, the top of the insertion part 311 is designed to be arc-shaped, which has a guiding effect to facilitate the clamping convex 232 to push the insertion part 311 away from the first hole wall.

[0056] In addition, in the embodiment, as shown in the figure, Figure 4 two first clamping pieces 31 are arranged on the two sides of the pole column 10 in the width direction of the connecting piece 20, respectively; in the width direction of the connecting piece 20, the distance between the surfaces of the two insertion parts 311 facing each other is equal to the distance between the surfaces of the two connecting arms 312 facing each other, and the thickness of the insertion part 311 is greater than the thickness of the connecting arm 312; correspondingly, as shown in the figure, Figure 9As shown, two second snap-fit ​​pieces 23 are respectively disposed on both sides of the second tooth structure 21 along the width direction of the connecting piece 20, wherein the snap-fit ​​protrusions 232 located on both sides of the second tooth structure 21 extend in opposite directions.

[0057] In some embodiments, such as Figure 2 - Figure 8 as well as Figure 11 As shown, a receiving cavity 12 is formed between the terminal post 10 and the connecting piece 20 of the battery cell 100. The receiving cavity 12 is configured to accommodate and abut against the voltage acquisition part 40 of the flexible circuit board.

[0058] Understandably, the voltage acquisition unit 40 of the flexible circuit board is used to obtain the voltage signal of the battery cell 100 and output it to an external device so that the external device can determine the condition of the battery cell 100 based on the voltage signal.

[0059] In this embodiment, the voltage acquisition part 40 of the flexible circuit board is placed between the electrode post 10 and the connecting piece 20 to form a receiving cavity 12, and the voltage acquisition part 40 of the flexible circuit board, the electrode post 10 and the connecting piece 20 are in contact to achieve electrical connection. This replaces the existing method of achieving electrical connection of the voltage acquisition part 40 of the flexible circuit board by welding the nickel sheet and the connecting piece 20. This not only facilitates the electrical connection between the voltage acquisition part 40 of the flexible circuit board and the connecting piece 20, but also facilitates the disassembly and replacement of the connecting piece 20 and the battery cell 100.

[0060] It should be noted that, in order for the flexible circuit board to obtain the status of a whole row of battery cells 100, the flexible circuit board is designed to have multiple voltage acquisition units 40. Each voltage acquisition unit 40 needs to expose conductive material. The number of voltage acquisition units 40 is the same as the number of connecting pieces 20. That is, two adjacent battery cells 100 are electrically connected through a connecting piece 20, and the status of the above-mentioned electrical connection is obtained through a voltage acquisition unit 40.

[0061] It should also be noted that, in order to make the connection between the voltage acquisition unit 40 and the connecting piece 20 more flexible, the receiving cavity 12 is designed to extend along the length direction of the connecting piece 20, and both ends of the receiving cavity 12 along the length direction of the connecting piece 20 penetrate the connecting piece 20.

[0062] Furthermore, in order to make the voltage acquisition unit 40 and the connecting piece 20 more closely contact, a pressing protrusion 22 is provided in the receiving cavity 12, which is configured to abut against the voltage acquisition unit 40 of the flexible circuit board.

[0063] Understandably, a compression protrusion 22 is formed on the cavity wall of the connecting piece 20 that contacts the voltage acquisition unit 40.

[0064] Through the setting of the extrusion protrusion 22, the extrusion protrusion 22 can act on the voltage collection part 40 while the cavity wall on the connecting piece 20 is contacted by the voltage collection part 40, so that the voltage collection part 40 is deformed to the direction close to the pole 10, and then the purpose of the extrusion protrusion 22 and the exposed conductive material in the voltage collection part 40 are tightly contacted is achieved.

[0065] Based on the structure of the accommodating cavity 12, a bearing surface is further arranged in the accommodating cavity 12, and the position of the bearing surface is arranged opposite to the extrusion protrusion 22, that is, the extrusion protrusion 22 is arranged on the connecting piece 20, and the corresponding bearing surface is arranged on the pole 10; at the same time, the recess 13 is arranged on the bearing surface, and the position of the recess 13 is arranged opposite to the extrusion protrusion 22, the flexible circuit board is extruded by the extrusion protrusion 22, and the flexible circuit board is deformed to the recess 13, and the recess 13 is arranged to accommodate the deformation amount of the flexible circuit board.

[0066] It should be noted that, in the embodiment, referring to FIGS. Figure 7 and Figure 5 , the extrusion protrusion 22 is located between the second tooth structure A and the second tooth structure B arranged opposite along the width direction of the connecting piece 20, and correspondingly, the recess 13 is located between the first tooth structure A and the first tooth structure B arranged opposite along the width direction of the connecting piece 20, and the second end surface 25 of the connecting piece 20 and the recess 13 constitute the accommodating cavity 12.

[0067] The power utilization device of the embodiment includes the battery described above. The power utilization device can be a car, a mobile phone, a portable device, a notebook computer, a ship, a spacecraft, an electric toy, and an electric tool, etc. The car can be a fuel car, a gas car, or a new energy car, and the new energy car can be a pure electric car, a hybrid car, or an extended range car, etc. The spacecraft includes an airplane, a rocket, a space shuttle, and a spacecraft, etc. The electric toy includes a fixed or mobile electric toy, such as a game machine, an electric car toy, an electric ship toy, and an electric airplane toy, etc. The electric tool includes a metal cutting electric tool, a grinding electric tool, an assembling electric tool, and a railway electric tool, such as an electric drill, an electric grinder, an electric wrench, an electric screwdriver, an electric hammer, an impact electric drill, a concrete vibrator, and an electric planer, etc. The power utilization device is not specially limited in the embodiment.

[0068] In summary, the first tooth structure 11 is arranged on the pole 10, the second tooth structure 21 is arranged on the connecting piece 20, the first tooth structure 11 and the second tooth structure 21 are inserted and matched, and the electric connection between the connecting piece 20 and the pole 10 is realized through the matching of the first clamping piece 31 and the second clamping piece 23, and the reliability is high.

[0069] It should be emphasized that: the above is only the preferred embodiment of the present application, not any form of the present application for any restrictions, in accordance with the technical essence of the present application for any simple modification, equivalent changes and modifications of the above examples, still belong to the scope of the present application technical scheme.

Claims

1. A battery comprising a plurality of battery cells (100), a connecting piece (20) for connecting the plurality of battery cells (100) in series or in parallel, characterized in that, the battery cell (100) comprises a pole (10), a first tooth structure (11) is arranged on one side of the pole (10) facing the connecting piece (20); the connecting piece (20) is provided with a second tooth structure (21) on one side facing the pole (10); the pole (10) of the battery cell (100) and the connecting piece (20) are electrically connected, wherein the first tooth structure (11) and the second tooth structure (21) are inserted and matched, and the connecting piece (20) and the battery cell (100) are connected through a buckle assembly.

2. The battery of claim 1, wherein A receiving cavity (12) is formed between the pole (10) of the battery cell (100) and the connecting piece (20); the receiving cavity (12) is configured to accommodate and abut the voltage acquisition part (40) of the flexible circuit board.

3. The battery of claim 2, wherein, An extrusion protrusion (22) is arranged in the receiving cavity (12) and on the side of the connecting piece (20) facing the pole, and the extrusion protrusion (22) is configured to abut the voltage acquisition part (40) of the flexible circuit board.

4. The battery according to claim 3, characterized in that, A bearing surface is arranged in the receiving cavity (12) and on the pole (10), and the bearing surface is configured to support the voltage acquisition part (40) of the flexible circuit board; the bearing surface of the pole (10) is provided with a recess (13) at a position opposite to the extrusion protrusion (22).

5. The battery according to any one of claims 1 to 4, characterized in that The pole (10) has a first end face (14) arranged towards the connecting piece (20); the connecting piece (20) has a second end face (25) arranged towards the pole (10), the first end face (14) of the pole (10) is recessed to form the first tooth structure (11); the second end face (25) of the connecting piece (20) is protruded to form the second tooth structure (21).

6. The battery of claim 5, wherein, The first tooth structure (11) comprises at least one tooth groove, each tooth groove comprises a first vertical face (111) perpendicular to the first end face (14) of the pole (10) and a first inclined face (112) arranged obliquely to the first vertical face (111); the second tooth structure (21) comprises at least one protruding tooth, each protruding tooth comprises a second vertical face (211) perpendicular to the second end face (25) of the connecting piece (20) and a second inclined face (212) arranged obliquely to the second vertical face (211); the protruding tooth and the tooth groove are inserted, and the first vertical face (111) and the second vertical face (211) are in contact and matched, and the second inclined face (212) and the first inclined face (112) are in contact and matched.

7. The battery of claim 6, wherein the battery is a lithium ion battery. The first tooth structure (11) is provided with two groups, the tooth shapes of the tooth grooves of the two groups of the first tooth structure (11) are oppositely arranged; the second tooth structure (21) is provided with two groups, the tooth shapes of the protruding teeth of the two groups of the second tooth structure (21) are oppositely arranged; the first tooth structure (11) and the second tooth structure (21) have a one-to-one correspondence.

8. The battery of any one of claims 1 to 4, wherein the electrolyte comprises a lithium salt. The buckle assembly comprises a first clamping piece (31) and a second clamping piece (23), the battery monomer (100) comprises an insulating piece (30) sleeved on the pole (10), the first clamping piece (31) and the insulating piece (30) are integrally formed; the second clamping piece (23) and the connecting sheet (20) are integrally formed.

9. The battery of claim 8, wherein the battery is a lithium-ion battery. The first clamping piece (31) comprises an insertion part (311) and a connecting arm (312) connected with the insertion part (311), the connecting arm (312) is connected with the insulating piece (30); the connecting arm (312) is provided with a plurality of clamping holes (32); the second clamping piece (23) comprises a mounting hole (231) and a clamping convex (232), the mounting hole (231) is arranged on the connecting sheet (20), the connecting sheet (20) has a hole peripheral wall surrounding the mounting hole (231), the hole peripheral wall has oppositely arranged first and second hole walls, the first hole wall of the connecting sheet (20) is provided with the clamping convex (232) matched with the clamping hole (32); a gap is formed between the second hole wall of the connecting sheet (20) and the clamping convex (232) for the insertion part (311) to pass through.

10. An electric device, characterized by The battery comprising the battery monomer of claim 9. The battery comprising the battery monomer of claim 9.

Images