Electric connector, circuit board, battery device and electric equipment

Abstract

An electric connector, a circuit board, a battery device and electric equipment, the electric connector comprises a base and a cover body, and the base is suitable for being fixedly connected with a board body of the circuit board; the cover body is suitable for being connected with the base and is used for fixing the tab between the base and the cover body; the base and the cover body are arranged, the base is connected with the board body of the circuit board, the tabs are fixed between the base and the cover body, the tabs and the electric connecting pieces do not need to be connected through welding, and machining is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, and in particular to an electric connector, a circuit board, a battery device and electric equipment. Background Art

[0002] The connection between the tabs and the circuit board is usually done by laser welding. The positive and negative tabs of the battery cell are connected to the pads on the circuit board by laser spot welding. Before laser spot welding, it is necessary to adjust the welding energy, light frequency, welding times, etc., and the processing technology is complicated. Utility Model Content

[0003] The utility model aims to provide an electrical connector, a circuit board, a battery device and an electrical device, wherein welding between the pole ear and the circuit board is unnecessary and the processing is convenient.

[0004] In order to achieve the purpose of the utility model, the utility model provides the following technical solutions:

[0005] In a first aspect, the utility model provides an electrical connector, comprising a base and a cover, wherein the base is suitable for being connected and fixed to a board of a circuit board; the cover is suitable for being connected to the base and used to fix a tab between the base and the cover.

[0006] In one embodiment, the electrical connector further includes a rotating shaft, and the cover is rotatably connected to the base via the rotating shaft.

[0007] In one embodiment, the base includes a bottom plate, a first connecting plate and a second connecting plate, the bottom plate is suitable for connecting to the plate body, the first connecting plate and the second connecting plate are at least partially connected to the surface of the bottom plate facing away from the plate body, the first connecting plate and the second connecting plate are arranged opposite to each other, and the rotating shaft is rotatably connected to the first connecting plate and the second connecting plate.

[0008] In one embodiment, the first connecting plate is provided with a first limiting portion, the cover body is provided with a corresponding second limiting portion, and the first limiting portion is suitable for connecting with the second limiting portion.

[0009] In one embodiment, the base further includes a first protrusion connected to a side of the bottom plate facing away from the plate body, and the cover body further includes a second protrusion disposed on a side of the cover body facing the base.

[0010] In one embodiment, the first protrusion includes a first end face and a second end face opposite to each other, the second end face is connected to the base plate, and the first protrusion also includes a first connecting surface, the first connecting surface connects the first end face and the second end face, and an angle α is formed between the first connecting surface and the second end face, satisfying: 100°≤α≤150°.

[0011] In one implementation, the first end surface is a plane and / or a curved surface.

[0012] In one embodiment, the first protrusion is in the shape of any one or more combinations of a prism, a pyramid, a frustum, and a cone.

[0013] In one embodiment, there are multiple first protrusions, and the multiple first protrusions are distributed in an array on the bottom plate.

[0014] In one embodiment, when the base and the cover body fix the tab, an orthographic projection of the first protrusion on the bottom plate and an orthographic projection of the second protrusion on the bottom plate are spaced apart.

[0015] In one embodiment, the electrical connector further includes a bending portion, the bending portion connecting the base and the cover, and the cover is rotatably connected to the base via the bending portion.

[0016] In one embodiment, the bending portion, the base and the cover are an integrated structure.

[0017] In one embodiment, the base includes a first fixing portion, the cover includes a second fixing portion, and the first fixing portion is suitable for being matched with the second fixing portion to fix the tab.

[0018] In one embodiment, when the base and the cover body fix the tab, the electrical connector has a height H in the thickness direction of the plate body, satisfying: 0.7 mm ≤ H ≤ 1.8 mm.

[0019] In a second aspect, the utility model further provides a circuit board, comprising a board body and an electrical connector as described in any one of the various embodiments of the first aspect, wherein the electrical connector is connected to the board body.

[0020] In a third aspect, the utility model further provides a battery device, comprising a battery cell, a tab and the circuit board as described in the second aspect, wherein the battery cell is connected to the tab, and the tab is connected to the circuit board.

[0021] In a fourth aspect, the utility model further provides an electrical equipment, comprising an electrical device and a battery device as described in the third aspect, wherein the battery device supplies power to the electrical device.

[0022] By providing a base and a cover body, the base is connected to the board body of the circuit board, and the pole ear is fixed between the base and the cover body. No welding is required between the pole ear and the electrical connector, and the processing is convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 is a schematic diagram of a circuit board of an embodiment;

[0025] Figure 2 is a three-dimensional diagram of an electrical connector of an embodiment;

[0026] Figure 3 is a top view of a base of an embodiment;

[0027] Figure 4 is a front view of a base of an embodiment;

[0028] Figure 5 is a top view of a cover body of an embodiment;

[0029] Figure 6 It is a top view of a cover body of another embodiment.

[0030] Description of reference numerals:

[0031] 100-circuit board;

[0032] 10-Plate body;

[0033] 20-electrical connector, 21-base, 211-bottom plate, 212-first connecting plate, 213-second connecting plate, 214-second surface, 215-first limiting portion, 216-third limiting portion, 217-first protrusion, 218-first end surface, 219-second end surface, 2171-first connecting surface, 2172-second connecting surface, 22-cover body, 221-cover plate, 222-third connecting plate, 223-fourth connecting plate, 224-second limiting portion, 225-second protrusion, 226-third surface, 23-rotating shaft, 24-bending portion, 241-first fixing portion, 242-second fixing portion, 243-fixing groove;

[0034] α-the first angle. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0036] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or there can be a central component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there can be a central component at the same time.

[0037] Unless otherwise defined, all technical and scientific terms used in this utility model have the same meaning as those commonly understood by technicians in the technical field of this utility model. The terms used in the specification of this utility model are only for the purpose of describing specific embodiments and are not intended to limit this utility model. The term "and / or" used in this utility model includes any and all combinations of one or more related listed items.

[0038] In conjunction with the accompanying drawings, some embodiments of the present invention are described in detail below. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0039] An embodiment of the utility model provides an electric device, including an electric device and a battery device in the embodiment of the utility model, and the battery device supplies power to the electric device.

[0040] Optionally, the electrical device may be an electric vehicle, a hybrid vehicle, a base station, a household electrical load, etc., and may also be used in electronic devices such as laptop computers, mobile phones, etc.

[0041] Optionally, the battery device may be a power battery device, an energy storage battery device, etc., without specific limitation.

[0042] The embodiment of the utility model further provides a battery device, including a battery cell, a tab and the circuit board in the embodiment of the utility model, the battery cell is connected to the tab, and the tab is connected to the circuit board.

[0043] Optionally, the battery cell may be a laminated battery cell, a wound battery cell, etc., without limitation.

[0044] Optionally, the battery cell includes a positive electrode sheet, a negative electrode sheet and a separator, and the positive electrode sheet, the separator and the negative electrode sheet are stacked in sequence. The tabs include a positive tab and a negative tab, and the positive tab and the negative tab can be arranged at the same end of the battery cell, or respectively at two opposite or adjacent ends of the battery cell, without specific limitation.

[0045] Optionally, the connection method between the electrode tab and the current collector can be welding, bonding, clamping, screwing, etc., without specific limitation.

[0046] Optionally, the battery device further comprises a shell, the shell comprising a shell bottom plate and a plurality of side plates, the side plates are connected to the shell bottom plate and enclosed to form a receiving cavity. The receiving cavity is open at one end opposite to the shell bottom plate, and the battery cell is received in the receiving cavity.

[0047] Optionally, the shell is made of a material with high structural strength, specifically metal materials, high-strength plastics, ceramics, etc., and metal materials such as aluminum, aluminum alloys, magnesium alloys, iron and iron alloys, etc. The shell can be an integrated structure, that is, the shell bottom plate and the side plates are an integrated structure made by an integrated molding process, and the integrated molding process can be specifically stamping, casting, etc., without limitation. The shell can also be a split structure, and the side plates and the shell bottom plate can be connected and fixed by welding, bonding, clamping, screwing, etc. The wall thickness of the shell can be roughly uniform everywhere, that is, the thickness of the side plates can be roughly uniform, and the thickness of the shell bottom plate and the side plates can also be roughly the same.

[0048] Optionally, the battery device further comprises a shell cover plate, which is connected to the opening of the shell to close the accommodating cavity. The shell cover plate and the shell can be connected by welding, bonding, clamping, screwing, etc., without limitation. The shape of the shell cover plate can be substantially the same as that of the shell bottom plate.

[0049] Optionally, the circuit board is a circuit board commonly used in the art, such as a flexible circuit board, a rigid circuit board, a hard-soft integrated circuit board, a hard-soft combined circuit board, a printed circuit board (PCB), a ceramic circuit board, etc., without specific limitation.

[0050] In the prior art, the connection between the tabs and the circuit board is usually done by laser welding. The positive and negative tabs of the battery cell are connected to the nickel bricks on the circuit board by laser spot welding. During welding, the battery cell and the circuit board are placed in a spot welding jig and welded outside the line; or the battery cell and PCBA are placed in a plastic frame and automatic spot welding is used. Both processes require adjustment of welding energy, light frequency and number of times before spot welding. And it is troublesome to replace the battery cell after welding.

[0051] This method does not meet the new EU law's requirements for portable batteries to be removable and replaceable. The regulations require that users can replace the battery cells themselves without the use of special tools, except for the free provision of proprietary tools or disassembly solvents.

[0052] The battery device in the embodiment of the utility model adopts the circuit board in the embodiment of the utility model, so that the pole ear and the circuit board are detachably connected, without welding, and the battery cell is easy to replace.

[0053] Please refer to Figure 1The embodiment of the utility model further provides a circuit board 100 , which includes a board body 10 and an electrical connector 20 in the embodiment of the utility model, and the electrical connector 20 is connected to the board body 10 .

[0054] Optionally, the shape of the plate body 10 can be rectangular, square, circular, irregular polygonal, etc., without specific limitation.

[0055] Optionally, the electrical connector 20 and the board body 10 may be connected by welding, bonding, clamping, screwing, etc., without limitation.

[0056] Optionally, there is no limit to the number of electrical connectors 20, and the number may be 2, 4, 6, 8, etc. The number of electrical connectors 20 may correspond to the number of tabs, and there is no specific limit.

[0057] The circuit board 100 in the embodiment of the utility model can be detachably connected with the tab by adopting the electrical connector 20 in the embodiment of the utility model, without the need for welding, and is convenient for replacing the battery core.

[0058] The electrical connector 20 in the embodiment of the utility model is described in detail below.

[0059] Please refer to Figure 2 The embodiment of the utility model provides an electrical connector 20, including a base 21 and a cover 22. The base 21 is suitable for being connected and fixed to the board body 10 of the circuit board 100. The cover 22 is suitable for being connected to the base 21 and used to fix the tab between the base 21 and the cover 22.

[0060] First define the direction. Figure 2 As shown, X is the first direction, Y is the second direction, and Z is the third direction.

[0061] Optionally, the material of the electrical connector 20 may be nickel, nickel-plated copper, tin-copper alloy, gold-plated material, etc., without specific limitation.

[0062] Optionally, the electrical connector 20 may be an integrated structure, that is, the base 21 and the cover 22 are an integrated structure made by an integrated molding process, and the integrated molding process may be stamping, casting, etc. The base 21 and the cover 22 may also be a split structure, which is not specifically limited.

[0063] Optionally, the base 21 is electrically connected to the circuit board 100 .

[0064] Optionally, the base 21 and the plate body 10 may be connected by welding, bonding, clamping, screwing, etc., without limitation.

[0065] The electrical connector 20 in the embodiment of the utility model is provided with a base 21 and a cover 22. The base 21 is connected to the board body 10 of the circuit board 100. The pole ear is detachably fixed between the base 21 and the cover 22. There is no need for welding between the pole ear and the electrical connector 20, and the processing is convenient.

[0066] Optional, such as Figure 2 and Figure 5 As shown, the electrical connector 20 further includes a rotating shaft 23 , and the cover 22 is rotatably connected to the base 21 via the rotating shaft 23 .

[0067] Optional, such as Figure 5 As shown, the shaft 23 is fixedly connected to the cover 22 and is rotatably connected to the base 21; or, the shaft 23 is fixedly connected to the base 21 and is rotatably connected to the cover 22. Both of the above methods are possible and are not specifically limited.

[0068] Optionally, the shaft 23 and the cover 22 or the base 21 may be connected and fixed by welding, bonding, clamping, screwing, etc., which are not specifically limited.

[0069] By configuring the electrical connector 20 to further include a rotating shaft 23, the cover 22 is rotatably connected to the base 21 via the rotating shaft 23, so that the cover 22 can rotate relative to the base 21 to fix the tab or open it to remove the tab.

[0070] Optional, such as Figure 3 and Figure 4 As shown, the base 21 includes a bottom plate 211, a first connecting plate 212 and a second connecting plate 213. The bottom plate 211 is suitable for connecting to the board body 10. The first connecting plate 212 and the second connecting plate 213 are at least partially connected to the surface of the bottom plate 211 facing away from the board body 10. The first connecting plate 212 and the second connecting plate 213 are arranged opposite to each other, and the rotating shaft 23 is rotatably connected to the first connecting plate 212 and the second connecting plate 213.

[0071] Optionally, the first connecting plate 212 and the second connecting plate 213 are arranged opposite to each other in the first direction X.

[0072] Optionally, the base 21 may be an integrated structure, that is, the bottom plate 211, the first connecting plate 212, and the second connecting plate 213 are an integrated structure made by an integrated molding process, and the integrated molding process may be stamping, casting, etc., without limitation. The base 21 may also be a split structure, and the bottom plate 211, the first connecting plate 212, and the second connecting plate 213 may be connected and fixed by welding, bonding, clamping, screwing, etc.

[0073] Optionally, the shape of the bottom plate 211 can be square, circular, polygonal, etc., without specific limitation.

[0074] Optionally, the bottom plate 211 includes a first surface (not shown in the figure) and a second surface 214 opposite to each other, the first surface is suitable for connecting to the board body 10 , and the first connecting plate 212 and the second connecting plate 213 are suitable for connecting to the second surface 214 .

[0075] Optionally, in one embodiment, the first connecting plate 212 is provided with a first connecting groove (not shown in the figure), and the second connecting plate 213 is provided with a second connecting groove (not shown in the figure). The rotating shaft 23 is fixedly connected to the cover body 22, and one end of the rotating shaft 23 is rotatably connected to the inner wall of the first connecting groove, and the other end is rotatably connected to the inner wall of the second connecting groove.

[0076] By setting the base 21 including a bottom plate 211, a first connecting plate 212 and a second connecting plate 213, the bottom plate 211 is connected to the plate body 10, and the rotating shaft 23 is rotatably connected to the first connecting plate 212 and the second connecting plate 213. The rotating shaft 23 drives the cover body 22 to rotate relative to the base 21, so that the pole ear can be fixed or the pole ear can be removed from between the base 21 and the cover body 22.

[0077] Optional, such as Figure 5 As shown, the cover body 22 includes a cover plate 221, a third connecting plate 222 and a fourth connecting plate 223. The cover plate 221 is opposite to the bottom plate 211, and the rotating shaft 23 is connected and fixed to the cover plate 221. The third connecting plate 222 and the fourth connecting plate 223 are at least partially connected to the surface of the cover plate 221 facing the bottom plate 211. The third connecting plate 222 and the fourth connecting plate 223 are arranged opposite to each other, and the third connecting plate 222 corresponds to the first connecting plate 212, and the fourth connecting plate 223 corresponds to the second connecting plate 213.

[0078] Optionally, the third connecting plate 222 and the fourth connecting plate 223 are opposite to each other in the first direction X, and the cover plate 221 and the bottom plate 211 are opposite to each other in the third direction Z. When the base 21 and the cover body 22 are connected and the tab is fixed, the tab is located between the bottom plate 211 and the cover plate 221 .

[0079] Optionally, the first connecting plate 212 is provided with a first limiting portion 215 , and the cover body 22 is provided with a corresponding second limiting portion 224 , and the first limiting portion 215 is suitable for connecting with the second limiting portion 224 .

[0080] Optionally, the third connecting plate 222 of the cover body 22 is provided with a second limiting portion 224 .

[0081] Optionally, the first limiting portion 215 and the second limiting portion 224 may be elastically snap-fitted or locked, and there is no specific limitation thereto.

[0082] Optionally, there may be one or more first limiting portions 215 and second limiting portions 224 , and the plurality of first limiting portions 215 and the plurality of second limiting portions 224 are arranged in a one-to-one correspondence.

[0083] For example, Figure 2 and Figure 3 As shown, there are two first limiting portions 215 and two second limiting portions 224. The first limiting portion 215 is a protruding piece, and the second limiting portion 224 is a fixing groove. The two first limiting portions 215 are arranged at intervals on the first connecting plate 212, and the two second limiting portions 224 are arranged on the third connecting plate 222 accordingly.

[0084] Optionally, the first limiting portion 215 and the second limiting portion 224 are detachably connected.

[0085] When the tab is fixed between the base 21 and the cover 22, the first limiting portion 215 is connected to the second limiting portion 224 to buckle the base 21 and the cover 22. When the battery cell needs to be replaced, the first limiting portion 215 is separated from the second limiting portion 224 so that the tab can be removed from between the base 21 and the cover 22.

[0086] Optionally, the second connecting plate 213 is provided with a third limiting portion 216 , and the cover body 22 is provided with a corresponding fourth limiting portion (not shown in the figure).

[0087] Optionally, the fourth connecting plate 223 is provided with a fourth limiting portion.

[0088] Similarly, the connection method and quantity of the third limiting portion 216 and the fourth limiting portion can be referred to the first limiting portion 215 and the second limiting portion 224, and will not be described in detail.

[0089] By setting the first limiting portion 215 suitable for connecting with the second limiting portion 224, the first limiting portion 215 and the second limiting portion 224 can buckle the base 21 and the cover 22 when connected, thereby fixing the relative position of the base 21 and the cover 22, and then fixing the tab to prevent the tab from moving around.

[0090] Optional, such as Figure 3 , Figure 4 and Figure 5 As shown, the base 21 further includes a first protrusion 217 connected to a side of the bottom plate 211 facing away from the plate body 10 , and the cover 22 further includes a second protrusion 225 disposed on a side of the cover 22 facing the base 21 .

[0091] Optionally, the first protrusion 217 is made of a conductive material, and when the pole piece is fixed between the base 21 and the cover 22 , the first protrusion 217 can be electrically connected to the pole piece, so that the pole piece is electrically connected to the circuit board 100 through the first protrusion 217 .

[0092] Optionally, the material of the second protrusion 225 may be a conductive material or an insulating material, and there is no specific limitation thereto.

[0093] Optionally, the first protrusion 217 is connected to the second surface 214 of the bottom plate 211 , the cover plate 221 further includes a third surface 226 facing the bottom plate 211 , and the second protrusion 225 is connected to the third surface 226 .

[0094] Optionally, the first protrusion 217 and the bottom plate 211 can be an integrated structure, and the integrated molding process can be stamping, casting, etc., without limitation. The first protrusion 217 and the bottom plate 211 can also be a split structure, and the first protrusion 217 and the bottom plate 211 can be connected and fixed by welding, bonding, clamping, screwing, etc.

[0095] Similarly, the connection method between the second protrusion 225 and the cover plate 221 may refer to the connection method between the first protrusion 217 and the bottom plate 211 described above, and will not be described in detail.

[0096] A first protrusion 217 is provided on one side of the bottom plate 211 facing the cover plate 221, and a second protrusion 225 is provided on one side of the cover body 22 facing the bottom plate 211. When the base 21 and the cover body 22 are connected, the first protrusion 217 and the second protrusion 225 contact the pole ear and fix the pole ear by interference fit and concave-convex fit. No welding is required between the pole ear and the electrical connector 20, and the process is simple.

[0097] Optional, such as Figure 4 As shown, the first protrusion 217 includes a first end face 218 and a second end face 219 facing each other, and the second end face 219 is connected to the bottom plate 211. The first protrusion 217 also includes a first connecting surface 2171, which connects the first end face 218 and the second end face 219, and there is a first angle α between the first connecting surface 2171 and the second end face 219, which satisfies: 30°≤α≤80°.

[0098] Optionally, the shape of the orthographic projection of the first protrusion 217 on the bottom plate 211 may be a polygon, a circle, an ellipse, etc., which is not specifically limited.

[0099] Optionally, the second end surface 219 is connected to the second surface 214 .

[0100] Optionally, in the orthographic projection of the first protrusion 217 on the base plate 211 , the geometric center of the first end surface 218 coincides with the geometric center of the second end surface 219 , that is, the first protrusion 217 has an axis from the first end surface 218 to the second end surface 219 , and the first protrusion 217 is rotationally symmetric about the axis.

[0101] Optionally, the first connecting surface 2171 may be any one of a plane, a curved surface, and a folded surface, or a combination of multiple thereof, without specific limitation.

[0102] Optionally, the first end surface 218 is a plane and / or a curved surface.

[0103] Optionally, the first end surface 218 is a plane; or, the first end surface 218 is a curved surface; or, the first end surface 218 is a combination of a plane and a curved surface, and all of the above are possible without specific limitation.

[0104] By setting the first end surface 218 to be a plane and / or an arc surface, the connection between the first protrusion 217 and the pole piece is more stable.

[0105] Optionally, the shape of the first protrusion 217 is any one or more combinations of a prism, a pyramid, a frustum, and a cone.

[0106] Optionally, when the first protrusion 217 is a cone or a truncated cone, the first connecting surface 2171 is a curved surface, and when the first protrusion 217 is a prism or a pyramid, the first connecting surface 2171 is a side surface of the first protrusion 217. In addition, when the first protrusion 217 is a cone or a pyramid, the area of ​​the first end surface 218 is zero, that is, the first end surface 218 is a point.

[0107] Optionally, in one embodiment, the first protrusion 217 includes a first portion and a second portion, the first portion includes a first end surface 218, and the second portion includes a second end surface 219. The first portion is a truncated cone and the second portion is a prism; or, the first portion is a prism and the second portion is a truncated cone; or, the first portion is a cone and the second portion is a prism; or, the first portion is a pyramid and the second portion is a truncated cone, all of which are possible and are not specifically limited.

[0108] By setting the shape of the first protrusion 217 to be any one or more combinations of a prism, a pyramid, a frustum, and a cone, the shape of the first protrusion 217 can be processed according to actual needs.

[0109] Optionally, the first angle α is the angle between the shortest line segment from the first end face 218 to the second end face 219 on the first connecting surface 2171 and the second end face 219. The value of the first angle α can be 40°, 50°, 60°, etc., without limitation.

[0110] Optionally, when the first protrusion 217 is a prism, the first protrusion 217 further includes a second connecting surface 2172 disposed opposite to the first connecting surface 2171, and a second angle β (not shown in the figure) is formed between the first connecting surface 2171 and the second end surface 219, satisfying: 30°≤β≤80°. The values ​​of the first angle α and the second angle β may be the same or different, and are not specifically limited.

[0111] Optionally, the shape of the second protrusion 225 is similar to that of the first protrusion 217, which can be referred to and will not be described in detail.

[0112] By setting the first protrusion 217 to include a first end face 218 and a second end face 219 facing each other, the second end face 219 is connected to the bottom plate 211, and a first angle α is provided between the first connecting surface 2171 of the first protrusion 217 and the second end face 219, which satisfies: 30°≤α≤80°. When the pole ear is located between the base 21 and the cover body 22, the first protrusion 217 and the second protrusion 225 achieve interference fit and concave-convex fit to fix the pole ear, and the connection is firm, and the pole ear is not easy to fall out.

[0113] Optionally, there are multiple first protrusions 217 , and the multiple first protrusions 217 are distributed in an array on the bottom plate 211 .

[0114] Optionally, the first direction X is the length direction of the bottom plate 211 , and the number of the first protrusions 217 in the first direction X is between 5 and 15, and specifically can be 5, 8, 10, 12, etc., without limitation.

[0115] Optionally, the second direction Y is along the width direction of the bottom plate 211 , and the number of the first protrusions 217 in the second direction Y is between 2 and 5, and specifically can be 3, 4, etc., without limitation.

[0116] Optionally, the plurality of first protrusions 217 are arranged at equal intervals in both the first direction X and the second direction Y.

[0117] By providing a plurality of first protrusions 217 , which are distributed in an array on the bottom plate 211 , when the tab is fixed between the base 21 and the cover 22 , the connection stability between the tab and the electrical connector 20 can be increased to prevent the tab from falling out.

[0118] Optionally, when the base 21 and the cover 22 fix the tab, an orthographic projection of the first protrusion 217 on the bottom plate 211 and an orthographic projection of the second protrusion 225 on the bottom plate 211 are spaced apart.

[0119] When the base 21 and the cover 22 are buckled to fix the tab, the first protrusion 217 and the second protrusion 225 do not contact in the third direction Z to avoid unstable buckling. The first protrusion 217 and the second protrusion 225 are staggered in the first direction X and / or the second direction Y to better fix the tab.

[0120] Optionally, when the base 21 and the cover 22 fix the tab, the electrical connector 20 has a height H in the thickness direction of the board 10 that satisfies: 0.7 mm ≤ H ≤ 1.8 mm.

[0121] Optionally, the third direction Z is the thickness direction of the board body 10 , and is also the height direction of the electrical connector 20 .

[0122] Optionally, the value of the height H satisfies: 0.9mm≤H≤1.5mm. The specific value of the height H can be 0.9mm, 1.2mm, 1.5mm, etc., without specific limitation. In the prior art, the tab is connected to the pad on the board body 10 of the circuit board 100, the pad thickness is about 0.5mm, and the tab thickness is about 0.15mm. Combined with the product thickness, after welding, there will be a height difference of at least 0.5mm between the top of the tab and the outer shell cover of the battery device, and the outer shell cover is easy to bend and deform to produce abnormal noise.

[0123] The height H of the electrical connector 20 in the embodiment of the utility model can be adjusted according to the gap between the circuit board 100 and the outer shell cover of the battery device to reduce the distance between the electrical connector 20 and the outer shell cover. The side of the cover 22 facing away from the base 21 is in contact with the outer shell cover and can also play a certain supporting role for the outer shell cover.

[0124] Optionally, in one embodiment, as Figure 6 As shown, the electrical connector 20 further includes a bending portion 24 , which connects the base 21 and the cover 22 , and the cover 22 is rotatably connected to the base 21 via the bending portion 24 .

[0125] Optionally, the bending portion 24, the base 21 and the cover body 22 can be an integrated structure made by an integrated molding process, and the electrical connector 20 can also be a split structure. The bending portion 24, the base 21 and the cover body 22 are connected and fixed by welding, bonding, etc., without specific limitation.

[0126] Optionally, the bending portion 24, the base 21 and the cover 22 are an integrated structure, which is simple to manufacture and easy to assemble.

[0127] Optionally, the bending portion 24 is suitable for bending to allow the cover 22 to rotate relative to the base 21 .

[0128] By configuring the electrical connector 20 to also include a bending portion 24, the cover 22 is rotatably connected to the base 21 via the bending portion 24, and the tab is detachably fixed between the base 21 and the cover 22. No welding is required between the tab and the electrical connector 20, and processing is convenient.

[0129] Optionally, the base 21 includes a first fixing portion 241 , the cover 22 includes a second fixing portion 242 , and the first fixing portion 241 is suitable for being matched and connected with the second fixing portion 242 to fix the tab.

[0130] Optionally, the first fixing portion 241 is disposed on a side of the base 21 facing the cover 22 , and the second fixing portion 242 is disposed on a side of the cover 22 facing the base 21 .

[0131] Optional, such as Figure 6As shown, the second fixing portion 242 defines a fixing groove 243. When the tab is disposed between the base 21 and the cover 22, the first fixing portion 241 is adapted to extend into the fixing groove 243 to buckle the base 21 and the cover 22, thereby fixing the tab.

[0132] Optionally, in another embodiment, the first fixing portion 241 defines a fixing groove 243 , and the second fixing portion 242 is adapted to extend into the fixing groove 243 to buckle the base 21 and the cover 22 , thereby fixing the tab.

[0133] Optionally, there may be one or more first fixing parts 241, and there is no specific limitation. The multiple first fixing parts 241 may all be protrusions, or the multiple first fixing parts 241 may all be provided with fixing grooves 243; or at least one of the multiple first fixing parts 241 may be a protrusion, and at least one first fixing part 241 may be provided with a fixing groove 243, and the above methods are all possible, and there is no specific limitation.

[0134] Optionally, the number and shape of the second fixing portions 242 may correspond to the first fixing portions 241 one by one, and there is no specific limitation thereto.

[0135] Optionally, in one embodiment, as Figure 6 As shown, there are two first fixing parts 241 and two second fixing parts 242. The two first fixing parts 241 are spaced apart on the side of the base 21 facing the cover body 22. The two first fixing parts 241 are both protrusions. The two second fixing parts 242 are arranged on the cover body 22 corresponding to the first fixing parts 241. The two second fixing parts 242 are both provided with fixing grooves 243.

[0136] By providing the first fixing portion 241 of the base 21 and the second fixing portion 242 of the cover 22 to cooperate and connect to fix the tab, the structure of the electrical connector 20 is simple, and welding between the tab and the electrical connector 20 is not required, so the processing is convenient.

[0137] In the description of the embodiments of the present invention, it should be noted that the orientation or positional relationship of terms such as "center", "up", "down", "left", "right", "vertical", "horizontal", "inside" and "outside" are based on the orientation or positional relationship described in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0138] The above disclosure is only a preferred embodiment of the present invention, and certainly cannot be used to limit the scope of rights of the present invention. Ordinary technicians in this field can understand that all or part of the processes of the above embodiment and equivalent changes made according to the claims of the present invention still fall within the scope covered by the present invention.

Claims

1. An electrical connector (20), characterized in that: include: A base (21) adapted to be connected and fixed to a board body (10) of a circuit board (100); The cover body (22) is suitable for being connected to the base (21) and is used to fix the tab between the base (21) and the cover body (22).

2. The electrical connector (20) according to claim 1, characterized in that: The electrical connector (20) further comprises a rotating shaft (23), and the cover body (22) is rotatably connected to the base (21) via the rotating shaft (23).

3. The electrical connector (20) according to claim 2, characterized in that: The base (21) comprises a bottom plate (211), a first connecting plate (212) and a second connecting plate (213); the bottom plate (211) is suitable for connecting to the plate body (10); the first connecting plate (212) and the second connecting plate (213) are at least partially connected to a surface of the bottom plate (211) facing away from the plate body (10); the first connecting plate (212) and the second connecting plate (213) are arranged opposite to each other; and the rotating shaft (23) is rotatably connected to the first connecting plate (212) and the second connecting plate (213).

4. The electrical connector (20) according to claim 3, characterized in that: The first connecting plate (212) is provided with a first limiting portion (215), the cover body (22) is provided with a corresponding second limiting portion (224), and the first limiting portion (215) is suitable for connecting with the second limiting portion (224).

5. The electrical connector (20) according to claim 3, characterized in that: The base (21) further includes a first protrusion (217), the first protrusion (217) being connected to a side of the bottom plate (211) facing away from the plate body (10), the cover body (22) further includes a second protrusion (225), the second protrusion (225) being arranged on a side of the cover body (22) facing the base (21), the first protrusion (217) and the second protrusion (225) being suitable for clamping the pole ear.

6. The electrical connector (20) according to claim 5, characterized in that: The first protrusion (217) includes a first end face (218) and a second end face (219) facing each other, the second end face (219) is connected to the bottom plate (211), the first protrusion (217) also includes a first connecting face (2171), the first connecting face (2171) connects the first end face (218) and the second end face (219), and an angle α is formed between the first connecting face (2171) and the second end face (219), satisfying the following: 100°≤α≤150°.

7. The electrical connector (20) according to claim 6, characterized in that: The first end surface (218) is a plane and / or a curved surface.

8. The electrical connector (20) according to claim 6, characterized in that: The shape of the first protrusion (217) is any one or more combinations of a prism, a pyramid, a frustum, and a cone.

9. The electrical connector (20) according to claim 6, characterized in that: There are a plurality of the first protrusions (217), and the plurality of the first protrusions (217) are distributed in an array on the bottom plate (211).

10. The electrical connector (20) according to claim 6, characterized in that: When the base (21) and the cover (22) fix the tab, an orthographic projection of the first protrusion (217) on the bottom plate (211) and an orthographic projection of the second protrusion (225) on the bottom plate (211) are spaced apart.

11. The electrical connector (20) according to claim 1, characterized in that: The electrical connector (20) further comprises a bending portion (24), wherein the bending portion (24) connects the base (21) and the cover (22), and the cover (22) is rotatably connected to the base (21) via the bending portion (24).

12. The electrical connector (20) according to claim 11, characterized in that: The bent portion (24), the base (21) and the cover body (22) are an integrated structure.

13. The electrical connector (20) according to claim 11, wherein the base (21) comprises a first fixing portion (241), and the cover (22) comprises a second fixing portion (242), and the first fixing portion (241) is suitable for being matched with the second fixing portion (242) to fix the tab.

14. The electrical connector (20) according to any one of claims 1 to 13, characterized in that: When the base (21) and the cover (22) fix the tab, the electrical connector (20) has a height H in the thickness direction of the plate (10), satisfying the following relationship: 0.7 mm ≤ H ≤ 1.8 mm.

15. A circuit board (100), characterized in that: It comprises a plate body (10) and an electrical connector (20) according to any one of claims 1 to 14, wherein the base (21) is connected and fixed to the plate body (10).

16. A battery device, characterized in that: It comprises a battery cell, a tab and a circuit board (100) as claimed in claim 15, wherein the battery cell is connected to the tab, and the tab is connected to the circuit board (100).

17. An electrical equipment, characterized in that: It comprises an electric device and the battery device as claimed in claim 16, wherein the battery device supplies power to the electric device.

Images