CN212062540U

CN212062540U - Battery with a battery cell

Info

Publication number: CN212062540U
Application number: CN202021139806.6U
Authority: CN
Inventors: 周权; 吴明杰
Original assignee: Dongguan Poweramp Technology Ltd
Current assignee: Dongguan Poweramp Technology Ltd
Priority date: 2020-06-18
Filing date: 2020-06-18
Publication date: 2020-12-01
Anticipated expiration: 2030-06-18

Abstract

The application discloses battery, battery include electric core, circuit board, shell, locating pin and locating hole. The circuit board is positioned on one side of the battery cell extending out of the lug; the positioning pin is arranged on the shell; the positioning hole is arranged on the circuit board; the locating pin can stretch into the locating hole in order to restrict the circuit board and remove. The battery is provided with a positioning hole on the circuit board; and set up the structure that can with the pore wall butt on the shell: positioning pins; through locating hole and locating pin butt, make the shell restriction circuit board remove, saved connection structure such as screw, simple to operate, efficient.

Description

Battery with a battery cell

Technical Field

The present application relates to a battery.

Background

In the existing BATTERY, usually, a nut is pre-embedded on a shell, and a circuit board provided with a BATTERY management system (BMS, BATTERY MANAGEMENT SYSTEM) is fixed on the shell by matching with the nut through a screw and the like, so that the automatic installation of the screw and the like is difficult, and the manual installation efficiency is low.

SUMMERY OF THE UTILITY MODEL

In view of the above, it is desirable to provide a battery that is convenient for mounting a circuit board.

The application provides a battery, including electric core, circuit board and shell, the circuit board is located one side that utmost point ear was stretched out to electric core, electric core with the circuit board set up in the shell. The battery also comprises a positioning pin and a positioning hole, wherein the positioning pin is arranged on the shell; the positioning hole is arranged on the circuit board; the positioning pin extends into the positioning hole to limit the circuit board to move.

According to some embodiments of the present application, the battery further comprises at least two first card slots and at least two first snaps. The at least two first clamping grooves are respectively formed in two sides of the circuit board; the at least two first buckles are arranged on the shell and are provided with abutting parts profiling the first clamping grooves; the supporting parts of the two first buckles are respectively embedded into the two first clamping grooves on two sides of the circuit board, and the supporting parts are abutted against the groove walls of the first clamping grooves.

According to some embodiments of the present application, the housing includes a first side shell and a second side shell, and the first side shell and the second side shell are respectively fixed by a snap-fit connection.

According to some embodiments of the present application, the housing includes a shell structure and an outer cover. The battery cell is arranged in the shell structure; the outer cover is arranged on one side of the shell structure and is positioned on one side, deviating from the battery core, of the circuit board.

According to some embodiments of the present application, the battery further comprises a support; the supporting part is arranged on the shell structure and can support the circuit board, so that the circuit board and the battery cell are separated by a set distance.

According to some embodiments of the present application, the battery further comprises a second snap, a first face, and a second face. The second buckle comprises a body and a second buckling part; the body is arranged on the shell structure and positioned on one side of the circuit board; the second buckling part is arranged on one side of the body facing the circuit board. The first surface and the second surface are arranged on the circuit board in a back-to-back manner in sequence along the direction of the battery cell towards the circuit board. The supporting part abuts against the first surface, and the second buckling part abuts against the second surface.

According to some embodiments of the present application, the battery further comprises a second catch, a first wall, and a second wall. The second buckle is arranged on the shell structure and is provided with a second abutting surface. The first wall and the second wall are respectively arranged on two opposite sides of the circuit board. The second abutting surfaces of the two second buckles abut against the first wall and the second wall respectively.

According to some embodiments of the present application, a second card slot is formed in a side of the circuit board; the second clamping groove comprises a first side wall, a second side wall and third side walls, the first side wall and the second side wall are oppositely arranged at two ends of the third side wall, the first side wall and the second side wall are respectively two third side walls on two opposite sides of the circuit board, and the first side wall and the second side wall are respectively larger than zero with the minimum distance of the second buckle.

According to some embodiments of the present application, the battery further comprises a support portion and a pressure holding portion. The supporting part is arranged on the shell structure; the pressing part is arranged on the outer cover; the first surface and the second surface are sequentially arranged on the circuit board in a back-to-back manner along the direction of the battery cell towards the circuit board; the supporting part abuts against the first surface, and the pressing part abuts against the second surface.

According to some embodiments of the present application, the battery further comprises a third buckle comprising a body and a third buckle portion. The body is arranged on the shell structure and is positioned on one side of the circuit board; the third buckling part is arranged on one side of the body, which is far away from the circuit board; and a third clamping groove is formed in the outer cover, and the third buckling part is buckled in the third clamping groove.

The battery is provided with a positioning hole on the circuit board; and the shell is provided with a structure capable of abutting against the hole wall: positioning pins; through locating hole and locating pin butt, make the shell restriction the circuit board removes, has left out connection structure such as screw, simple to operate, efficient.

Drawings

Fig. 1 is a schematic structural view of a battery according to a first embodiment of the present application.

Fig. 2 is an exploded view of the battery shown in fig. 1.

Fig. 3 is a structural schematic diagram of the battery shown in fig. 1 after the battery core and the first transfer sheet are assembled.

Fig. 4 is a schematic structural view of the battery shown in fig. 1 with the outer cover removed.

Fig. 5 is an exploded view of the battery shown in fig. 4.

Fig. 6 is a structural sectional view of the battery shown in fig. 1 taken along line VI-VI.

Fig. 7 is a structural view illustrating an outer cover of the battery shown in fig. 6.

Fig. 8 is a schematic structural diagram of a battery cell, a first interposer, a second interposer, and a circuit board in the battery shown in fig. 1 in another embodiment.

Fig. 9 is a structural schematic diagram of the battery shown in fig. 8 after the battery core and the first transfer sheet are assembled.

Fig. 10 is a schematic structural view of a battery according to a second embodiment of the present application with an outer cover removed.

Fig. 11 is an exploded view of the battery shown in fig. 10 with the battery cell removed.

Fig. 12 is a schematic structural view of an upper cover of the battery shown in fig. 10.

Fig. 13 is a schematic structural view of a battery according to a third embodiment of the present application.

Description of the main elements

Batteries

100, 100a, 100b, 100c

Outer casing

10, 10c

First positioning structure

1001, 1001b

Second alignment structures

1003, 1003b

Housing structure 101

First housing 1011

Second housing 1013

Support wall 1015

Outer covers

103, 103b

Locating pin 11

Second catch 13

Body 131

Second abutting surface 1311

Second fastening part 133

Guide surface 1331

First retaining surface 1333

Third fastener 13a

Third fastening part 133a

The

support parts

14, 16, 19

Third card slot 15

Pressing part 17

First buckle 18

Abutting part 181

First side shell 104

Second side shell 105

Battery cell 20

First end 201

Second end 203

Battery cell body 21

First tab 23

Second tab 25

Circuit board 30

First side 301

Second side 303

First through hole 31

Second through hole 33

Third via 34

Fourth via 35

Third alignment structures 3001, 3001b

Fourth positioning structure 3003

Positioning hole 36

Dodging hole 37

Second card slot 38

First side wall 381

Second side wall 383

Third side wall 385

First card slot 39

First switching

piece

40, 40a

First fixed part 41

First bent part 43

First connection portion 45

Second interposer

50, 50a

Second fixed part 51

Second bent part 53

Second connection part 55

Third interposer 60

First direction Z

Second direction X

Third direction Y

The following detailed description will further illustrate the present application in conjunction with the above-described figures.

Detailed Description

The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

Some embodiments of the present application provide a battery, including electric core, circuit board and shell, the circuit board is located one side that utmost point ear is stretched out to electric core, electric core with the circuit board set up in the shell. The battery also comprises a positioning pin and a positioning hole, wherein the positioning pin is arranged on the shell; the positioning hole is arranged on the circuit board; the positioning pin extends into the positioning hole to limit the circuit board to move.

Some embodiments of the present application will be described in detail below with reference to the accompanying drawings. The embodiments described below and the features of the embodiments can be combined with each other without conflict.

First embodiment

Referring to fig. 1 to fig. 3, a battery 100 is provided according to an embodiment of the present disclosure. The battery 100 includes a case 10, a cell 20, and a circuit board 30. The battery cell 20 and the circuit board 30 are respectively located in the housing 10. The housing 10 is used to fix the battery cell 20 and the circuit board 30. The circuit board 30 is provided with a battery management system.

The battery cell 20 includes a battery cell body 21 and two tabs. The two tabs are respectively a first tab 23 and a second tab 25. The first tab 23 and the second tab 25 are disposed on one side of the cell body 21 and extend out of the cell body 21. The number of the battery cells 20 is plural, such as thirteen, but not limited thereto. A plurality of the battery cells 20 are sequentially arranged in the casing 10.

For convenience of the subsequent description, as shown in fig. 2, the first direction Z, the second direction X, and the third direction Y are defined by coordinate axes. In this embodiment, the first direction Z is a direction parallel to the first tab 23 or the second tab 25 extending out of the cell body 21, the second direction X is an arrangement direction parallel to the plurality of cells 20, and the third direction Y is perpendicular to the first direction Z and the second direction X, respectively.

The plurality of battery cells 20 are electrically connected in series, and specifically, in two adjacent battery cells 20, the first tab 23 of one battery cell 20 and the second tab 25 of the other battery cell 20 are bent and then extend and overlap in the second direction X. The polarity of the first tab 23 is an anode, and the polarity of the second tab 25 is a cathode, but is not limited thereto. Along the second direction X, a plurality of the battery cells 20 arranged in the first direction X include a first end 201 and a second end 203. The first tab 23 of the battery cell 20 located at the first end 201 and the second tab 25 of the battery cell 20 located at the second end 203 extend along the second direction X in opposite directions, and are respectively used as a positive electrode and a negative electrode of the battery cells 20. It is understood that, in other embodiments, a plurality of the battery cells 20 may also be electrically connected in parallel.

With continued reference to fig. 3, 4, and 5, the battery 100 further includes a first interposer 40 and a second interposer 50. The first switching sheet 40 is electrically connected to the first tab 23 and the second tab 25 of two adjacent battery cells 20. Specifically, the first transfer tab 40, the second tab 25 and the first tab 23 are sequentially stacked along the first direction Z, but is not limited thereto. The first tab 40, the first tab 23 and the second tab 25 are connected by ultrasonic welding or laser welding, so as to achieve electrical connection, wherein the welding area is shown as a shaded area in fig. 3.

The first tab 40 and the second tab 25 are made of copper, and the first tab 23 is made of aluminum, but not limited thereto. In the first direction Z, the first tab 40 made of copper and the second tab 25 are arranged below the first tab 23 made of aluminum, the melting point of copper is higher than that of aluminum, and when welding is performed, the welding energy is higher downwards, so that the welding effect is improved.

It is understood that in other embodiments, the stacking order of the first tab 40, the second tab 25 and the first tab 23 may also be changed. For example, the first transfer tab 40 may be located above the second tab 25, and the stacking order of the second tab 25 and the first tab 23 may be set according to material variation.

The first tab 23, the second tab 25 and the first transfer sheet 40 on a plurality of battery cells 20 may be welded at the same time by using a mold or the like, so as to improve the battery cell assembly efficiency.

The second interposer 50 is disposed on the circuit board 30. The second interposer 50 is electrically connected to the circuit board 30 and the first interposer 40. The circuit board 30 is provided with a first through hole 31. The first through hole 31 penetrates through a side of the circuit board 30, but is not limited thereto. The first through hole 31 exposes a projection overlapping portion of a part of the first interposer 40 and the second interposer 50 along the first direction Z. The first interposer 40 and the second interposer 50 are ultrasonically welded or laser welded through the first through hole 31 by a welding device (not shown).

The contact interface of the first interposer 40 and the second interposer 50 is located in the first through hole 31, but is not limited thereto. Specifically, the second interposer 50 is connected to one side of the first through hole 31 on the circuit board 30 and extends to the first through hole 31. The second interposer 50 is connected to the circuit board 30 by SURFACE MOUNT TECHNOLOGY (SMT) and extends along the second direction X, wherein a connection area between the second interposer 50 and the circuit board 30 is a shaded area shown in fig. 4. The first interposer 40 extends to the first through hole 31 along the third direction Y to connect with the second interposer 50.

The second interposer 50 includes a second fixing portion 51, a second bending portion 53 and a second connecting portion 55 connected in sequence. The second fixing portion 51 is connected to the circuit board 30. The second connection portion 55 is connected to the first switching piece 40. The second bending portion 53 is inclined with respect to the second fixing portion 51 and the second connecting portion 55, so that the second interposer 50 is formed with a bending structure.

The second fixing portion 51 is located on a side of the circuit board 30 facing away from the battery cell 20. The circuit board 30 includes a first surface 301 and a second surface 303 disposed opposite to the first surface 301. The first surface 301 faces the battery cell 20. The second fixing portion 51 is provided on the second surface 303. In order to enable the second connection portion 55 to be firmly welded to the first transfer piece 40 during welding, the second transfer piece 50 is deformable so that the second connection portion 55 extends in a direction approaching the first transfer piece 40. For example, an included angle between the second bending portion 53 and the second fixing portion 51 changes, a deformation of the second bending portion 53 itself, or an included angle between the second bending portion 53 and the second connecting portion changes. Even if the first tab 40 is deformed when being welded to the first tab 23 and the second tab 25, or there is a manufacturing or mounting error in the structure of the battery 100, the second tab 50 can be firmly welded to the first tab 40 by providing a bent structure to the second tab 50. It is understood that, in other embodiments, the second fixing portion 51 may also be located on a side of the circuit board 30 facing the battery cell 20.

The second fixing portion 51 and the second connecting portion 55 are parallel, but not limited thereto, and in other embodiments, the second fixing portion 51 and the second connecting portion 55 may not be parallel as long as the second connecting portion 55 can be connected to the first transfer piece 40.

Referring to fig. 3 and fig. 4, the first rotating sheet 40 includes a first fixing portion 41, a first bending portion 43 and a first connecting portion 45 connected in sequence. The first fixing portion 41 is connected to the first tab 23 and the second tab 25. The first connecting portion 45 is connected to the second interposer 50 in a contact manner. The first bending portion 43 is inclined with respect to the first fixing portion 41 and the first connecting portion 45, so that a bending structure is formed on the first adaptor sheet 40, the first adaptor sheet 40 is easily deformed, and the first connecting portion 45 extends in a direction approaching the second adaptor sheet 50, so as to improve a welding effect of the first adaptor sheet 40 and the second adaptor sheet 50.

The first adapter sheet 40 and the second adapter sheet 50 are respectively provided with a bending structure, so that the anti-seismic effect of the battery 100 is improved, and the connection reliability of the first adapter sheet 40, the first tab 23, the second tab 25, the first adapter sheet 40 and the second adapter sheet 50 is improved.

The second bending portion 53 and the first bending portion 43 are at least partially located in the first through hole 31, but not limited thereto. The first through hole 31 provides a space for the second interposer 50 and the first interposer 40 to extend after deformation.

It is understood that in other embodiments, the first interposer 40 and/or the second interposer 50 may omit the bending structure.

It is understood that the first interposer 40 and the second interposer 50 may also extend respectively, so that the contact interface therebetween is located outside the first through hole 31. For example, in another embodiment, the contact interface between the first interposer 40 and the second interposer 50 is located in a space between the circuit board 30 and the cell body 21, and the welding device is used to weld and fix the contact interface between the first interposer and the second interposer through the first through hole 31 in the space. For another example, in another embodiment, the second fixing portion 51 of the second interposer 50 is disposed on the second surface 303, and a contact interface between the first interposer 40 and the second interposer 50 is located on a side of the first through hole 31 facing away from the battery cell 20. The first fixing portion 41 of the first transfer sheet 40 is welded to the tabs of two adjacent battery cells 20 and is located on one side of the circuit board 30 facing the battery cells 20; the first bent portion 43 is at least partially disposed in the first through hole 31. The surface of the first connecting portion 45 facing the first surface 301 is welded to the second connecting portion 55. The surface of the first connecting portion 45 facing the first surface 301 is flush with or higher than the top surface of the first through hole 31 facing away from the battery cell 20, that is, the contact interface between the first connecting portion 45 and the second connecting portion 55 is located outside the first through hole 31.

The circuit board 30 is provided with a second through hole 33. The first fixing portion 41 is at least partially exposed at the second through hole 33, so that the electrical connection between the first tab 40 and the first tab 23 and the second tab 25 is exposed. The second through hole 33 allows a probe (not shown) for internal resistance testing to pass through. The probe can abut against the connection part of the first connecting piece 40 and the first pole lug 23 and the second pole lug 25 to realize the internal resistance test. It is understood that in other embodiments, the second through hole 33 may be omitted, and the internal resistance test is performed in other manners.

The first through holes 31 are respectively opened at two sides of the circuit board 30 and penetrate through the side of the circuit board 30, but not limited thereto. The second through hole 33 communicates with the first through hole 31. It is understood that, in other embodiments, the first through hole 31 may not extend through a side of the circuit board 30, and a position of the first through hole 31 on the circuit board 30 depends on positions of the first tab 23 and the second tab 25 on the battery cell 20. The second through hole 33 may not be in communication with the first through hole 31.

Referring to fig. 4 and 5, the battery 100 further includes a third interposer 60. The third interposer 60 is disposed on the circuit board 30. Specifically, the third interposer 60 is connected to a side of the circuit board 30 away from the battery cell 20 by means of a surface mounting technique, that is, the third interposer 60 is connected to the second surface 303 of the circuit board 30.

The number of the third interposer 60 is two. One of the third interposer 60 is electrically connected to the first tab 23 of the cell 20 at the first end 201, and the other third interposer 60 is electrically connected to the second tab 25 of the cell 20 at the second end 203. The circuit board 30 is provided with a third through hole 34 at one side of the third interposer 60. The first tab 23 and the second tab 25 respectively pass through the corresponding third through hole 34, and are connected with the third adaptor sheet 60 by ultrasonic welding or laser welding.

Referring to fig. 6, the circuit board 30 is provided with a fourth through hole 35. The fourth through hole 35 overlaps with a projection of the third interposer 60 on the circuit board 30. The heat generated by the third interposer 60 during welding is discharged through the fourth through hole 35. It is understood that in other embodiments, the fourth through hole 35 may be omitted.

During assembly, the second interposer 50 and the third interposer 60 are respectively connected to the circuit board 30. The first transfer sheet 40 is welded to the first tab 23 and the second tab 25 to achieve connection. Subsequently, the first interposer 40, the second interposer 50, and the third interposer 60 are welded to the first tab 23 and the second tab 25, respectively, at the same time. The two times of welding are adopted successively, and the circuit board 30 does not need to be provided with through holes corresponding to the first switching sheet 40 when being welded with the first lug 23 and the second lug 25, so that the effective use area of the circuit board 30 is increased, and the layout space on the circuit board 30 is enlarged. It is understood that in other embodiments, a through hole may be added to the circuit board 30, so that two times of soldering are combined into one time of soldering.

Referring to fig. 8 and 9, in another embodiment, the structure of the battery 100a is substantially the same as that of the battery 100, except that: the first interposer 40a and the second interposer 50a of the battery 100a have different structures. Specifically, the first interposer 40a and the second interposer 50a are planar sheet-like structures, respectively. The second interposer 50a is disposed on the first surface 301 of the circuit board 30. The first interposer 40a and the second interposer 50a extend to the first through hole 31 on the circuit board 30 along the third direction Y, respectively. The contact interface between the first interposer 40a and the second interposer 50a is disposed outside the first through hole 31. The first interposer 40a and the second interposer 50a are soldered by a soldering device through the first through hole 31.

It is understood that in other embodiments, the contact interface between the first interposer 40a and the second interposer 50a may also be disposed in the first through hole 31, for example, a through hole is formed in the circuit board 30, and a bending structure is disposed on the first interposer 40a, so that the first interposer 40a extends into the first through hole 31 and is in contact connection with the second interposer 50a in the first through hole 31.

The circuit board 30 is provided with a groove structure or a hole structure, and the housing 10 is provided with a structure capable of abutting against the groove wall or the hole wall, so that the housing 10 limits the movement of the circuit board 30.

Referring to fig. 2 and 4, the circuit board 30, the battery 100 further includes a first positioning structure 1001 and a second positioning structure 1003 disposed on the housing 10, and a third positioning structure 3001 and a fourth positioning structure 3003 disposed on the circuit board 30. The first positioning structure 1001 and the third positioning structure 3001 cooperate to position the circuit board 30 in a plane (not shown). The plane is any plane perpendicular to the first direction Z. The plane is parallel to the circuit board 30. The second positioning structure 1003 and the fourth positioning structure 3003 cooperate to position the circuit board 30 in the first direction Z. The housing 10 positions the circuit board 30 in the first direction Z, the second direction X, and the third direction Y, so that the circuit board 30 is fixed to the housing 10.

The housing 10 includes a case structure 101 and an outer cover 103 disposed at one side of the case structure 101. The battery cell 20 is disposed in the housing structure 101. The outer cover 103 is located on a side of the circuit board 30 facing away from the battery cells 20. The first positioning structure 1001 is disposed on the housing structure 101. The second positioning structure 1003 is disposed on the housing structure 101 and/or the outer cover 103.

The housing structure 101 includes a first housing 1011 and a second housing 1013. The first housing 1011 and the second housing 1013 move from both sides of the battery cell 20 toward each other and are fixed by being fastened together. The first housing 1011 and the second housing 1013 are respectively provided with two abutting walls 1015 at intervals along the first direction Z. When the first housing 1011 and the second housing 1013 are fastened and fixed, the two abutting walls 1015 respectively abut against two sides of the cell body 21 of the cell 20, so that the housing structure 101 clamps and fixes the plurality of cells 20.

The first positioning structure 1001 and the second positioning structure 1003 are symmetrically disposed on the first housing 1011 and the second housing 1013, respectively, but are not limited thereto.

The first positioning structure 1001 includes two positioning pins 11 disposed on the housing structure 101 at intervals. The third positioning structure 3001 includes positioning holes 36 spaced apart from each other on the circuit board 30. Each positioning pin 11 extends into the corresponding positioning hole 36, and the peripheral wall of the positioning pin 11 abuts against the hole wall of the positioning hole 36 to limit the circuit board 30 to move in the plane, so that the circuit board 30 is positioned in the second direction X and the third direction Y.

Of the two positioning pins 11, one positioning pin 11 is provided on the first housing 1011, and the other positioning pin 11 is provided on the second housing 1013. The two positioning pins 11 are arranged in a plane parallel to the circuit board 30 with central symmetry, but not limited thereto. It is understood that in other embodiments, two positioning pins 11 may be disposed on the first housing 1011 at intervals, or disposed on the second housing 1013 at intervals.

Referring to fig. 4 and 5, the second positioning structure 1003 includes a second latch 13 and a supporting portion 14. The second latch 13 includes a body 131 and a second latch portion 133. The body 131 is disposed on the housing structure 101 and located at one side of the circuit board 30. The second fastening part 133 is disposed on a side of the body 131 facing the circuit board 30. The support portion 14 is disposed on the casing structure 101, and is capable of supporting the circuit board 30, so that the circuit board 30 and the battery cell 20 are separated by a set distance, so as to leave an electrical connection space between the battery cell 20 and the circuit board 30 and a heat dissipation channel. The side of the circuit board 30 facing the battery cells 20 can be equipped with electronic components. The direction of the battery cell 20 toward the circuit board 30 is parallel to the first direction Z. The fourth positioning structure 3003 includes a first surface 301 and a second surface 303 disposed on two opposite sides of the circuit board 30 along the first direction Z. The first surface 301 faces the battery cell 20. The supporting portion 14 is opposite to the second fastening portion 133. The supporting portion 14 abuts against the first surface 301, and the second fastening portion 133 abuts against the second surface 303, so as to limit the movement of the circuit board 30 in the first direction Z, and position the circuit board 30 in the first direction Z.

The number of the second catches 13 is plural, for example, the number of the second catches 13 is six. The plurality of second latches 13 are disposed on two sides of the circuit board 30, and are symmetrically disposed on the first housing 1011 and the second housing 1013, respectively.

The second fastening portion 133 is provided with a guiding surface 1331 and a first abutting surface 1333. The body 131 is elastically deformable. The guiding surface 1331 is used to provide guidance for the circuit board 30 sliding between the first abutting surface 1333 and the housing structure 101. The first abutting surface 1333 is spaced apart from and opposite to the supporting portion 14. When the circuit board 30 moves along the first direction Z toward the housing structure 101, the circuit board 30 abuts against the guide surface 1331 and drives the body 131 to deform, so that the circuit board 30 enters between the supporting portion 14 and the first abutting surface 1333.

The second buckle 13 is further provided with a second abutting surface 1311. Specifically, the second abutting surface 1311 is disposed on a side of the body 131 facing the circuit board 30. The third positioning structure 3001 further includes a first wall and a second wall disposed on two opposite sides of the circuit board 30 along the third direction Y. The second abutting surfaces 1311 of the two second latches 13 on the two sides of the circuit board 30 abut against the first wall and the second wall respectively, so that the two second latches 13 on the two sides of the circuit board 30 clamp and fix the circuit board 30, thereby improving the connection strength between the circuit board 30 and the housing structure 101. It is understood that in other embodiments, the second abutting surface 1311 may be omitted.

A plurality of second card slots 38 are respectively formed on two sides of the circuit board 30. The second card slot 38 includes a first side wall 381, a second side wall 383, and a third side wall 385. The first side wall 381 and the second side wall 383 are oppositely arranged at two ends of the third side wall 385. The first wall and the second wall are respectively third side walls 385 of the two second card slots 38 on both sides of the circuit board 30. The second supporting surface 1311 supports against the third sidewall 385.

The second latch 13 is located in the second card slot 38, so that the area of the circuit board 30 for arranging electronic components is increased. The minimum distance between the first side wall 381 and the second side wall 383 and the second clip 13 is greater than zero, so that the second clip 13 can move in the second card slot 38, and the problem of interference between the second clip 13 and the circuit board 30 caused by manufacturing errors and the like is avoided. It is understood that, in other embodiments, the second card slot 38 may be omitted, and the second latch 13 is directly pressed and held on both sides of the circuit board 30.

With reference to fig. 6 and 7, in order to increase the strength of supporting the circuit board 30, another supporting portion 16 is disposed on one side of the housing structure 101 facing the circuit board 30. The supporting portions 16 are provided in plural numbers and are respectively disposed on the first housing 1011 and the second housing 1013 at intervals. The supporting portion 16 abuts against the first surface 301 to support the circuit board 30. The second positioning structure 1003 further includes the supporting portion 16, the supporting portion 14, and the pressing portion 17. The pressing portion 17 is provided on the outer cover 103. The support portion 16 and the support portion 14 respectively abut against the first surface 301. The pressing portion 17 abuts against the second surface 303, so as to further enhance the positioning stability of the circuit board 30 in the first direction Z.

It is understood that in other embodiments, the battery 100 may only retain the support portion 14 or the support portion 16. In other embodiments, the support portion 16 may also be the support portion 14.

It is understood that in other embodiments, the second positioning structure 1003 may also include only the second latch 13 and the supporting portion 14, or the second positioning structure 1003 may also include only the supporting portion 16/the supporting portion 14 and the pressing portion 17.

The supporting portion 16 is a cylindrical structure, and specifically, the supporting portion 16 is a cylindrical body extending to two sides of the cylindrical body along a radial direction thereof to form a rectangular cylinder parallel to the third direction Y, so as to increase a supporting area and improve supporting stability, but not limited thereto. For example, in another embodiment, the number of the supporting portions 16 may be two, and the two supporting portions are respectively disposed on the first housing 1011 and the second housing 1013 so as to extend along the second direction X.

One of the positioning pins 11 is provided on each of the support portions 16. The circuit board 30 is further provided with an avoiding hole 37. The relief hole 37 corresponds to the positioning pin 11 except for the positioning pin 11 fitted with the positioning hole 36. And the relief hole 37 allows the pin 11 to move to avoid over-positioning problems. As can be appreciated. In other embodiments, the positioning pin 11 may also be directly disposed on the housing structure 101. In yet another embodiment, the relief holes 37 may be omitted. Accordingly, the positioning pin 11 may be provided only at a position corresponding to the positioning hole 36 on the housing structure 101.

Referring to fig. 4, 6 and 7, the battery 100 further includes a third latch 13 a. The third clip 13a includes a body 131 and a third clip part 133 a. The second latch 13 and the body 131 of the third latch 13a are the same structure, but not limited thereto. It is understood that, in other embodiments, the second latch 13 and the third latch 13a may be independent structures, and are separately disposed on the housing structure 101 at intervals. The third fastening portion 133a is disposed on a side of the body 131 departing from the circuit board 30. The outer cover 103 is provided with a third slot 15 therein. The third fastening portion 133a is fastened to the third fastening groove 15, so that the outer cover 103 is connected and fixed with the housing structure 101. It is understood that in other embodiments, the third fastener 13a may be omitted, and the outer cover 103 and the housing structure 101 may be fixed by gluing, welding, or the like.

Second embodiment

Referring to fig. 10, 11 and 12, the battery 100b includes a first positioning structure 1001b, a second positioning structure 1003b, a third positioning structure 3001b and a fourth positioning structure 3003. The structure of the battery 100b is substantially the same as that of the battery 100 in the first embodiment, except that: the first positioning structure 1001b and the first positioning structure 1001 have different structures, the second positioning structure 1003b and the second positioning structure 1003 have different structures, and the third positioning structure 3001b and the third positioning structure 3001 have different structures.

The first positioning structure 1001b includes a first catch 18. The third alignment structure 3001b includes a first slot 39. At least two first card slots 39 are respectively arranged on two sides of the circuit board 30. The first card slot 39 penetrates the first surface 301 and the second surface 303. The first buckle 18 is provided with a butting portion 181 which is profiled on the first locking groove 39. The cross-sectional shape of the first card slot 39 perpendicular to the first direction Z is substantially trapezoidal, but is not limited thereto. For example, in other embodiments, the cross-sectional shape of the first card slot 39 may also be an arc-shaped slot formed by connecting three arcs, and the like, as long as the opening of the first card slot 39 toward the outer side of the circuit board 30 along the third direction Y is gradually enlarged.

The two abutting portions 181 on the two sides of the circuit board 30 are respectively embedded into the corresponding first card slots 39. The abutting portion 181 abuts against a groove wall of the first engaging groove 39 to limit the circuit board 30 to move along the second direction X and the third direction Y.

The second positioning structure 1003b includes a supporting portion 19 disposed on the housing structure 101 and a pressing portion 17 disposed on the outer cover 103 b. The fourth alignment structure 3003 has the same structure as the fourth alignment structure 3003, and includes the first surface 301 and the second surface 303. The supporting portion 19 abuts against the first surface 301, and the pressing portion 17 abuts against the second surface 303, so that the circuit board 30 is positioned in the first direction Z.

It is understood that in other embodiments, the second positioning structure 1003b may further include a second catch 13. The battery 100b may also include a third latch 13a disposed on the housing structure 101 and a third slot 15 disposed on the outer cover 103.

Third embodiment

Referring to fig. 13, a battery 100c has substantially the same structure as the battery 100b of the second embodiment, except that: the structure of the case 10c of the battery 100c is different from that of the case 10 of the battery 100 b.

The housing 10c includes a first side case 104 and a second side case 105. The first side shell 104 and the second side shell 105 move from two sides of the battery cell 20 towards each other, and are connected and fixed in a buckling manner.

The

batteries

100, 100a, 100b, 100c are formed by providing positioning holes 36 in the circuit board 30; and a structure which can be abutted against the hole wall is arranged on the shell 10: positioning pins 11; the positioning hole 36 is abutted to the positioning pin 11, so that the shell 10 limits the movement of the circuit board 30, connection structures such as screws are omitted, and the installation is convenient and the efficiency is high.

Although the present application has been described in detail with reference to preferred embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the spirit and scope of the present application.

Claims

1. The utility model provides a battery, includes electric core, circuit board and shell, the circuit board is located one side that utmost point ear was stretched out to electric core, electric core with the circuit board set up in the shell, its characterized in that, the battery still includes:

the positioning pin is arranged on the shell;

the positioning hole is arranged on the circuit board;

the positioning pin extends into the positioning hole to limit the circuit board to move.

2. The battery of claim 1, wherein the battery further comprises:

the at least two first clamping grooves are respectively formed in two sides of the circuit board;

the at least two first buckles are arranged on the shell and are provided with abutting parts copying to the first clamping grooves;

the supporting parts of the two first buckles are respectively embedded into the two first clamping grooves on two sides of the circuit board, and the supporting parts are abutted against the groove walls of the first clamping grooves.

3. The battery of claim 2, wherein: the shell comprises a first side shell and a second side shell, and the first side shell and the second side shell are fixedly connected in a buckling mode.

4. The battery of claim 1 or 2, wherein the housing comprises:

the battery cell is arranged in the shell structure;

and the outer cover is arranged on one side of the shell structure and is positioned on one side of the circuit board, which deviates from the battery core.

5. The battery of claim 4, wherein: the battery further includes a support portion;

the supporting part is arranged on the shell structure and can support the circuit board, so that the circuit board and the battery cell are separated by a set distance.

6. The battery of claim 5, further comprising:

the second buckle comprises a body and a second buckling part; the body is arranged on the shell structure and positioned on one side of the circuit board; the second buckling part is arranged on one side of the body facing the circuit board;

the first surface and the second surface are sequentially arranged on the circuit board in a back-to-back manner along the direction of the battery cell towards the circuit board;

the supporting part abuts against the first surface, and the second buckling part abuts against the second surface.

7. The battery of claim 4, further comprising:

the second buckle is arranged on the shell structure and is provided with a second abutting surface;

the first wall and the second wall are respectively arranged on two opposite sides of the circuit board;

the second abutting surfaces of the two second buckles abut against the first wall and the second wall respectively.

8. The battery of claim 7, wherein: a second clamping groove is formed in the side edge of the circuit board; the second clamping groove comprises a first side wall, a second side wall and third side walls, the first side wall and the second side wall are oppositely arranged at two ends of the third side wall, the first side wall and the second side wall are respectively two third side walls on two opposite sides of the circuit board, and the first side wall and the second side wall are respectively larger than zero with the minimum distance of the second buckle.

9. The battery of claim 4, further comprising:

a support portion disposed on the housing structure;

the pressing part is arranged on the outer cover;

the supporting part abuts against the first surface, and the pressing part abuts against the second surface.

10. The battery of claim 4, further comprising a third snap, the third snap comprising:

the body is arranged on the shell structure and is positioned on one side of the circuit board;

the third buckling part is arranged on one side of the body, which is far away from the circuit board;

and a third clamping groove is formed in the outer cover, and the third buckling part is buckled in the third clamping groove.