CN212648365U

CN212648365U - Battery with a battery cell

Info

Publication number: CN212648365U
Application number: CN202021139801.3U
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: 2021-03-02
Anticipated expiration: 2030-06-18

Abstract

The application discloses a battery, which comprises a battery cell module and a shell, wherein the shell comprises at least two shell structures which are fixedly connected; the at least two shell structures form an accommodating cavity for accommodating the battery cell module; the holding intracavity is filled with the foaming glue, and the shell passes through the foaming glue with electric core module and fixes. This battery passes through the shell and sets up two at least shell structure who connects fixedly, makes the holding intracavity that two at least shell structure formed of being convenient for pack into of electric core module to fill the foamed glue in the holding intracavity, make shell and electric core module bond fixedly, the foamed glue wall is little, improved the quality and the energy density of battery than traditional polyurethane gluey water density.

Description

Battery with a battery cell

Technical Field

The present application relates to a battery.

Background

The battery is usually fixed and protected by polyurethane glue, but the density of the polyurethane glue is higher, so that the mass and the energy density of the battery are reduced, and the filling cost of the polyurethane glue per unit volume is higher.

SUMMERY OF THE UTILITY MODEL

In view of the above, it is desirable to provide a battery with high mass and high energy density.

The application provides a battery, which comprises a battery cell module and a shell, wherein the shell comprises at least two shell structures which are fixedly connected; at least two shell structures form an accommodating cavity for accommodating the battery cell module; the holding intracavity is filled with the foaming adhesive, the shell with the electricity core module passes through the foaming adhesive is fixed.

According to some embodiments of the present application, the housing comprises a first shell, a second shell, and an outer cover; the first shell and the second shell are fixed to form the accommodating cavity; the outer cover closes the accommodating cavity.

According to some embodiments of the application, the first shell or the second shell is provided with a glue filling opening communicated with the accommodating cavity.

According to some embodiments of the present application, the first housing and the second housing extend oppositely to form a support wall; the abutting wall is arranged opposite to the bottom wall of the accommodating cavity and is respectively positioned at two opposite sides of the battery cell module; the foaming glue in the accommodating cavity is filled to the abutting wall.

According to some embodiments of the present application, the battery includes a circuit board located between the cell module and the outer cover; the supporting wall is provided with positioning pins at intervals, and the circuit board is provided with positioning holes at intervals; the positioning pin can extend into the positioning hole and is abutted against the hole wall of the positioning hole so as to limit the circuit board to move.

According to some embodiments of the present application, the battery includes a circuit board located between the cell module and the outer cover; at least two first buckles positioned at two sides of the circuit board are arranged on the abutting wall; two sides of the circuit board are respectively provided with a first clamping groove; the first buckles are arranged on the abutting parts profiling the first clamping grooves, the abutting parts of the two first buckles can be respectively embedded into the two first clamping grooves on two sides of the circuit board, and the abutting parts can be abutted against the groove walls of the first clamping grooves.

According to some embodiments of the present application, the holding wall is provided with a second buckle and a support portion; the circuit board comprises a first surface and a second surface which are opposite to each other along the direction of the circuit board facing the battery cell module; the first surface faces the battery cell module; the supporting part abuts against the first surface, and the second buckle abuts against the second surface.

According to some embodiments of the present application, a support portion is disposed on the holding portion; the outer cover is provided with a pressing part; the circuit board comprises a first surface and a second surface which are opposite to each other along the direction of the circuit board facing the battery cell module; the first surface faces the battery cell module; 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, a first seal groove is provided on a side of the first housing facing the outer cover, and a second seal groove is provided on a side of the second housing facing the outer cover; the first sealing groove and the second sealing groove are connected and form an annular groove; the enclosing cover sets up annular bulge, the bulge can stretch into the ring channel, the ring channel intussuseption is filled with the structure and is glued.

According to some embodiments of the present application, a plurality of grooves are provided on the side wall of the housing, the battery cell module includes a plurality of battery cells arranged in sequence, and the battery cells are bonded and fixed to the grooves.

The battery is characterized in that the shell is provided with at least two shell structures which are fixedly connected, so that the battery cell module is convenient to be arranged in at least two accommodating cavities formed by the shell structures, and foaming glue is filled in the accommodating cavities to ensure that the shell is fixedly bonded with the battery cell module, and the foaming glue wall has small water density and is improved compared with the traditional polyurethane glue wall, and the quality and the energy density of the battery are improved.

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 an exploded view of the battery shown in fig. 2 from another perspective.

Fig. 4 is a structural schematic diagram of the battery shown in fig. 1 after the battery core and the first transfer sheet are assembled.

Fig. 5 is a schematic structural view of the battery shown in fig. 1 with the outer cover removed.

Fig. 6 is a schematic structural view of the battery shown in fig. 5 at another viewing angle.

Fig. 7 is an exploded view of the battery shown in fig. 5.

Fig. 8 is a structural sectional view of the battery shown in fig. 1.

Fig. 9 is a structural view illustrating an outer cover of the battery shown in fig. 1.

Fig. 10 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. 11 is a structural schematic diagram of the battery shown in fig. 10 after the battery cell and the first transfer sheet are assembled.

Fig. 12 is a schematic view of a structure of a battery according to a second embodiment of the present application with an outer cover removed.

Fig. 13 is an exploded view of the battery shown in fig. 12 with the battery cell removed.

Fig. 14 is a structural view illustrating an outer cap of the battery shown in fig. 12.

Fig. 15 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

The accommodation chamber 1005

Bottom wall 1006

Glue pouring opening 1007

Groove 1008

First housing 101

First engaging portion 1011

First seal groove 1013

Second housing 102

Second fastening part 1021

Second seal groove 1023

Support wall 1015

Outer covers

103, 103b

Projecting part 1031

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 module 200

Battery cell 20

First end 201

Second end 203

Battery cell body 21

First tab 23

Second tab 25

Foam 2001

Protection plate 2003

Circuit board 30

First side 301

Second side 303

First through hole 31

Avoidance groove 32

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

Fourth connecting portion 41

Fifth connecting part 43

Sixth connecting portion 45

Second interposer

50, 50a

First connection part 51

Second connecting part 53

Third connecting 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 a battery cell module and a housing, where the housing includes at least two casing structures that are fixed to each other; at least two shell structures form an accommodating cavity for accommodating the battery cell module; the holding intracavity is filled with the foaming adhesive, the shell with the electricity core module passes through the foaming adhesive is fixed.

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. 4, a battery 100 is provided according to an embodiment of the present disclosure. The battery 100 includes a casing 10, a cell module 200, and a circuit board 30. The battery cell module 200 includes a plurality of battery cells 20 arranged in sequence. The battery cell module 200 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.

Referring to fig. 3, foam 2001 is disposed between two adjacent battery cells 20. The foam 2001 is bonded to the battery cell 20. Along the second direction X, protection plates 2003 are respectively provided on both sides of the cell module 200. The protection plate 2003 is made of an aluminum material, but is not limited thereto. The protective plate 2003 abuts against or is bonded to the battery cells 20 on both sides of the battery cell module 200.

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.

With continued reference to fig. 5 and 7, 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 switching piece 40, the first tab 23 and the second tab 25 are connected by ultrasonic welding or laser welding, so as to realize electrical connection.

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 also vary depending on the material.

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 side of the circuit board 30 is provided with a first through hole 31. The first through hole 31 exposes a connection portion of the first interposer 40 and the second interposer 50. The connecting portions of the first and

second transition pieces

40 and 50 are ultrasonically welded or laser welded through the first through holes 31 by a welding device (not shown), wherein the welding area is shown as a shaded area in fig. 4.

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

The first connection portion 51 is located on a side of the circuit board 30 facing away from the battery cell 20. In order to enable the third 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 third connection portion 55 extends in a direction approaching the first transfer piece 40. For example, an angle between the second connection portion 53 and the first connection portion 51 changes, a deformation of the second connection portion 53 itself changes, or an angle between the second connection portion 53 and the third connection 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 first connection portion 51 may also be located on a side of the circuit board 30 facing the battery cell 20.

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

The circuit board 30 is provided with an avoidance slot 32. The avoiding groove 32 is communicated with the first through hole 31 and is used for providing an extending space for the second adapter sheet 50 after being deformed.

Referring to fig. 4 and 5, the first connecting portion 40 includes a fourth connecting portion 41, a fifth connecting portion 43 and a sixth connecting portion 45 connected in sequence. The fourth connection portion 41 is connected to the first tab 23 and the second tab 25. The sixth connection portion 45 is connected to the second interposer 50. The fifth connection portions 43 are respectively inclined with respect to the fourth connection portions 41 and the sixth connection portions 45, so that the first connection piece 40 is formed with a bent structure, the first connection piece 40 is easily deformed, and the sixth connection portions 45 extend in a direction approaching the second connection piece 50, thereby improving a welding effect of the first connection piece 40 and the second connection piece 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.

It is understood that in other embodiments, the first interposer 40 and/or the second interposer 50 may omit the bending structure, and accordingly, the avoiding groove 32 may also omit.

The circuit board 30 is provided with a second through hole 33. The second through hole 33 corresponds to a connection point of the first tab 40 with the first tab 23 and the second tab 25. 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.

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. 5 and 7, 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.

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. 8, 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 to allow two times of soldering to be performed simultaneously.

Referring to fig. 10 and 11, in another embodiment, a battery 100a has a structure substantially identical to 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 a side of the circuit board 30 facing the battery cell 20. The first interposer 40a and the second interposer 50a respectively extend to the first through hole 31 on the circuit board 30 along the third direction Y. The first interposer 40a and the second interposer 50a are soldered by a soldering device through the first through hole 31.

Referring to fig. 2, 5 and 6, the housing 10 includes at least two housing structures connected together. At least two of the housing structures form an accommodating cavity 1005 for accommodating the cell module 200. The accommodating cavity 1005 is filled with a foaming adhesive (not shown), so that the housing 10 is bonded and fixed with the battery cell module 200.

The at least two housing structures are a first housing 101, a second housing 102, and an outer cover 103, respectively. The first casing 101 and the second casing 102 move from two sides of the battery cell module 200 in opposite directions and are connected and fixed in a buckling manner, and the accommodating cavity 1005 is formed. The outer cover 103 is respectively connected to the first housing 101 and the second housing 102 in a snap-fit manner, and encloses the accommodating cavity 1005. The outer cover 103 is located on one side of the circuit board 30 departing from the battery cell module 200. The first housing 101 is provided with a first engaging portion 1011, and the second housing 102 is provided with a second engaging portion 1021, as shown in fig. 1. The first fastening portion 1011 is a fastening hole structure, and the second fastening portion 1021 is a convex fastening structure adapted to the fastening hole structure. The first engaging portion 1011 and the second engaging portion 1021 are engaged to fix the first housing 101 and the second housing 102.

It is understood that, in other embodiments, the first housing 101 and the second housing 102 may be connected by fastening members such as screws.

The first housing 101 and the second housing 102 respectively extend oppositely along the first direction Z to form two spaced support walls 1015. When the first casing 101 and the second casing 102 are fastened and fixed, the abutting wall 1015 and the bottom wall 1006 of the accommodating cavity 1005 are abutted against two sides of the battery cell module 200 along the first direction Z. The foaming glue in the accommodating cavity 1005 is filled to contact with one side of the abutting wall 1015 facing the bottom wall 1006 of the accommodating cavity 1005.

The abutting wall 1015 abuts against the cell body 21, so as to further improve the stability of the casing 10 for fixing the cell module 200 in the first direction Z, but not limited thereto. For example, in other embodiments, the abutting wall 1015 may also be disposed at an interval with the cell body 21, the abutting wall 1015 stops the cell body 21 from moving along the first direction Z, and the accommodating cavity 1005 is filled with the foam glue, that is, the cell body 21 and the abutting wall 1015 are bonded and fixed by the foam glue, so that the connection is reliable, and the foam glue can also play a role in buffering.

The first casing 101 is provided with a glue filling opening 1007 communicated with the accommodating cavity 1005. The glue filling opening 1007 is close to the bottom wall 1006 of the accommodating cavity 1005, and is located on one side of the battery cell module 200 along the second direction X. And injecting foaming glue into the accommodating cavity 1005 through the glue filling opening 1007 until the foaming glue contacts the abutting wall 1015 to stop injecting the foaming glue. The battery cell module 200 is fixed to the first casing 101 and the second casing 102 by a foam adhesive, so that the battery cell module 200 is fixed to the casing 10 along the second direction X and the third direction Y, and the abutting wall 1015 and the bottom wall 1006 of the accommodating cavity 1005 are fixed to the casing 10 along the first direction Z, so that the battery cell module 200 is fixed to the casing 10.

Referring to fig. 2, a plurality of grooves 1008 are respectively disposed on the sidewalls of the first housing 101 and the second housing 102. A recess 1008 on the first housing 101 is opposite to a recess 1008 on the second housing 102. Two sides of each battery cell 20 are respectively bonded and fixed to the two opposite grooves 1008, so that each battery cell 20 is fixed in the accommodating cavity 1005 formed by the first casing 101 and the second casing 102. When the battery cell module 200 is fixed in the accommodating cavity 1005, the accommodating cavity 1005 is filled with the foaming adhesive, the battery cell 20 is opposite to the housing 10, and the filling effect of the foaming adhesive is improved.

Referring to fig. 6 and 9, a first seal groove 1013 is disposed on one side of the first housing 101 facing the outer cover 103. A second sealing groove 1023 is formed in the second housing 102 on the side facing the outer cover 103. First seal groove 1013 and second seal groove 1023 meet to form an annular groove. The outer cover 103 is provided with an annular projection 1031. The protrusion 1031 can protrude into the annular groove. The annular groove is filled with structural adhesive, so that the connection and fixation reliability of the first housing 101 and the second housing 102 is enhanced, and the connection reliability of the protruding part 1031 and the first housing 101 and the second housing 102 is enhanced. The reliability of fixing the battery cell module 200 to the housing 10 is further enhanced.

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. 3 and 5, the battery 100 further includes a first positioning structure 1001 and a second positioning structure 1003 disposed on the inner wall of 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 first positioning structure 1001 is disposed on the first housing 101 and the second housing 102. The second positioning structure 1003 is disposed on the first housing 101, the second housing 102, and/or the outer cover 103. The first positioning structure 1001 and the second positioning structure 1003 are symmetrically disposed on the first casing 101 and the second casing 102, respectively, but not limited thereto.

The first positioning structure 1001 includes two positioning pins 11 arranged at intervals. Of the two positioning pins 11, one positioning pin 11 is disposed on the first housing 101, and the other positioning pin 11 is disposed on the second housing 102. Specifically, the positioning pin 11 is disposed on the abutting wall 1015. 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 also be disposed on the first housing 101 at intervals, or disposed on the second housing 102 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.

Referring to fig. 5 and fig. 7, the second positioning structure 1003 includes a second buckle 13 and a supporting portion 14 disposed on the supporting wall 1015. The second latch 13 includes a body 131 and a second latch portion 133. The body 131 is disposed on the first housing 101 and the second housing 102 and is located at a 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 first casing 101 and the second casing 102, 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 respectively disposed on two sides of the circuit board 30, and are respectively symmetrically disposed on the first housing 101 and the second housing 102.

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 a guide for the circuit board 30 to slide between the first abutting surface 1333 and the housing structure. 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 to the first casing 101 and the second casing 102, the circuit board 30 abuts against the guide surface 1331, and the body 131 is driven to deform, so that the circuit board 30 enters between the support 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 two second abutting surfaces 1311 on the two sides of the circuit board 30 abut against the first wall and the second wall respectively, so that the two second buckles 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 first shell 101 and the second shell 102. 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 two third side walls 385 of two second card slots 38 on both sides of the circuit board 30, respectively. 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.

Referring to fig. 8 and 9, in order to increase the strength of supporting the circuit board 30, another supporting portion 16 is disposed on one side of the first housing 101 and the second housing 102 facing the circuit board 30. The number of the supporting portions 16 is plural, and the supporting portions are respectively disposed on the first casing 101 and the second casing 102 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 a support portion 16, a support portion 14, and a pressing portion 17. The pressing portion 17 is provided on the outer cover 103. The first surface 301 faces the battery cell 20. 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 or 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 rectangular cylinder extending along the radial direction thereof to two sides thereof and parallel to the third direction Y, so as to increase the supporting area and improve the 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 casing 101 and the second casing 102 in 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 positioning pin 11 to move to avoid the over-positioning problem. As can be appreciated. In other embodiments, the positioning pins 11 may also be directly disposed on the first housing 101 and the second housing 102. 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.

Referring to fig. 5, 8 and 9, 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 first casing 101 and the second casing 102. 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 first housing 101 and the second housing 102. It is understood that in other embodiments, the third latch 13a may be omitted.

Second embodiment

Referring to fig. 12, 13 and 14, 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 shape 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 is embedded in the first slot 39 and abuts against a slot wall of the first slot 39 to limit the movement of the circuit board 30 in the second direction X and the third direction Y.

The second positioning structure 1003b includes a supporting portion 19 disposed on the first housing 101 and the second housing 102, 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 and a third slot 15 disposed on the outer cover 103.

Third embodiment

Referring to fig. 15, 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.

In the housing 10c, at least two of the shell structures are a first side shell 104 and a second side shell 105, respectively. 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 first side casing 104 and the second side casing 105 form a receiving cavity (not shown) for receiving the cell module 200. The first side case 104 is provided with a seal groove (not shown), and the second side case 105 is provided with a projection (not shown). The protruding portion can extend into the sealing groove, and the sealing groove is filled with structural adhesive, so that the housing 10c is fixed to the battery cell module 200 reliably.

The

batteries

100, 100a, 100b, and 100c are provided with at least two casing structures connected and fixed through the casing 10, so that the battery cell module 200 is conveniently installed in the accommodating cavity 1005 formed by the at least two casing structures, and the accommodating cavity 1005 is filled with the foam rubber, so that the casing 10 is bonded and fixed with the battery cell module 200, and the foam rubber has a lower water density than the conventional polyurethane rubber, and improves the quality and energy density of the

batteries

100, 100a, 100b, and 100 c.

Further, the foam adhesive has the same volume as the conventional polyurethane adhesive and is low in cost, and the cost of the

batteries

100, 100a, 100b and 100c is reduced.

Further, the hardness of the foaming adhesive is lower than that of the traditional polyurethane adhesive, and when the battery is out of control, the explosion risk is reduced.

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 module and shell, its characterized in that:

the shell comprises at least two shell structures which are fixedly connected; at least two shell structures form an accommodating cavity for accommodating the battery cell module;

the holding intracavity is filled with the foaming adhesive, the shell with the electricity core module passes through the foaming adhesive is fixed.

2. The battery of claim 1, wherein: the shell comprises a first shell, a second shell and an outer cover;

the first shell and the second shell are fixed to form the accommodating cavity;

the outer cover closes the accommodating cavity.

3. The battery of claim 2, wherein: and the first shell or the second shell is provided with a glue filling port communicated with the accommodating cavity.

4. The battery of claim 2, wherein: the first shell and the second shell extend oppositely to form a propping wall;

the abutting wall is arranged opposite to the bottom wall of the accommodating cavity and is respectively positioned at two opposite sides of the battery cell module;

the foaming glue in the accommodating cavity is filled to the abutting wall.

5. The battery of claim 4, wherein: the battery comprises a circuit board, and the circuit board is positioned between the battery cell module and the outer cover;

the supporting wall is provided with positioning pins at intervals, and the circuit board is provided with positioning holes at intervals; the positioning pin can extend into the positioning hole and is abutted against the hole wall of the positioning hole so as to limit the circuit board to move.

6. The battery of claim 4, wherein: the battery comprises a circuit board, and the circuit board is positioned between the battery cell module and the outer cover;

at least two first buckles positioned at two sides of the circuit board are arranged on the abutting wall;

two sides of the circuit board are respectively provided with a first clamping groove;

the first buckles are arranged on the abutting parts profiling the first clamping grooves, the abutting parts of the two first buckles can be respectively embedded into the two first clamping grooves on two sides of the circuit board, and the abutting parts can be abutted against the groove walls of the first clamping grooves.

7. The battery of claim 5 or 6, wherein:

the abutting wall is provided with a second buckle and a supporting part;

the circuit board comprises a first surface and a second surface which are opposite to each other along the direction of the circuit board facing the battery cell module; the first surface faces the battery cell module;

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

8. The battery of claim 6, wherein:

the supporting part is arranged on the abutting part;

the outer cover is provided with a pressing part;

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

9. The battery of claim 2, wherein: a first sealing groove is formed in one side, facing the outer cover, of the first shell, and a second sealing groove is formed in one side, facing the outer cover, of the second shell;

the first sealing groove and the second sealing groove are connected and form an annular groove;

the enclosing cover sets up annular bulge, the bulge can stretch into the ring channel, the ring channel intussuseption is filled with the structure and is glued.

10. The battery of claim 1, wherein: the battery cell module comprises a plurality of battery cells which are sequentially arranged, and the battery cells are bonded and fixed in the grooves.