CN214153116U

CN214153116U - Battery pack and electric device

Info

Publication number: CN214153116U
Application number: CN202120261110.9U
Authority: CN
Inventors: 喻律师; 夏君; 吴明杰
Original assignee: Dongguan Poweramp Technology Ltd
Current assignee: Dongguan Poweramp Technology Ltd
Priority date: 2021-01-29
Filing date: 2021-01-29
Publication date: 2021-09-07
Anticipated expiration: 2031-01-29

Abstract

The application provides a battery pack, including the casing, locate electric core subassembly in the casing, connect electric core subassembly's circuit board, pencil subassembly and fixed subassembly. The battery cell assembly comprises a plurality of battery cells. One end of the wire harness assembly is welded with the circuit board, and the other end of the wire harness assembly extends out of the shell. The fixing component is fixed with the wiring harness component, and at least part of the fixing component is arranged in the mounting groove of the shell. The fixing assembly comprises a first structural member and a second structural member, the first structural member is fixedly connected with the wiring harness assembly, and the second structural member is detachably connected with the first structural member. The first structural member comprises a first connecting part and a first fixing part, and the first fixing part is arranged in the shell and fixed with the shell. The second structural member is provided with a first accommodating groove, and the first connecting part is arranged in the first accommodating groove. The battery pack simplifies the connection structure between the wire harness assembly and the shell by utilizing the simple insertion connection mode of the first structural member and the second structural member, and improves the production efficiency. The application also provides an electric device with the battery pack.

Description

Battery pack and electric device

Technical Field

The application relates to the technical field of batteries, in particular to a battery pack and electric equipment with the battery pack.

Background

For convenience of use, the battery pack is often pulled out of the housing to electrically connect the battery pack to the electrical component or power source. In the prior art, the assembly fixing structure between the wire harness assembly and the shell is complex, and the auxiliary fixing is realized by using fasteners such as screws, so that the production efficiency of the battery pack is low, and the production cost is increased.

SUMMERY OF THE UTILITY MODEL

In view of the above situation, the present application provides a battery pack and an electric device having the battery pack, in which a first structural member is fixedly connected to a wire harness assembly, a second structural member is detachably connected to the wire harness assembly, and a portion of the second structural member is disposed on an outer surface of a housing, so that a simple insertion manner of the first structural member and the second structural member is utilized to simplify a connection structure between the wire harness assembly and the housing, thereby improving production efficiency.

An embodiment of the present application provides a battery pack including a housing, a battery pack assembly, a circuit board, a wire harness assembly, and a fixing assembly. The casing is equipped with the mounting groove, the electric core subassembly set up in the casing, the electric core subassembly includes a plurality of electric cores, the circuit board with the electric core subassembly electricity is connected, the pencil subassembly is including relative first end and the second end that sets up, first end weld in the circuit board, the second end stretches out the casing, fixed subassembly with the pencil subassembly is fixed, and at least the part is located the mounting groove. The fixing assembly comprises a first structural member and a second structural member, the first structural member is fixedly connected with the wire harness assembly, and the second structural member is detachably connected with the first structural member. The first structural member comprises a first connecting part and a first fixing part, and the first fixing part is arranged in the shell and fixed with the shell. The second structure piece comprises a second fixing part fixed with the shell, the second structure piece is provided with a first accommodating groove, and the first connecting part is arranged in the first accommodating groove.

In some embodiments, the second structure includes a second connecting portion, the second connecting portion is connected to the second fixing portion, the second connecting portion is disposed in the mounting groove, and the second connecting portion is disposed with the first receiving groove.

In some embodiments, the mounting groove is provided with a first supporting portion, the outer surface of the shell far away from the electric core assembly exceeds the first supporting portion, and the second fixing portion is arranged on the first supporting portion.

In some embodiments, the mounting groove is provided with a second supporting portion, and the free end of the second connecting portion is provided at the second supporting portion.

In some embodiments, the second fixing portion is provided with a positioning portion, the first supporting portion is provided with a positioning hole, and the positioning portion is disposed in the positioning hole.

In some embodiments, the first fixing portion includes a first side wall, a buckle is disposed on an outer side of the first side wall, and a bayonet is disposed at an end of the second connecting portion facing the first structural member, and the buckle is disposed at the bayonet.

In some embodiments, a guide portion is disposed on an outer side of the first side wall, the housing is provided with a first groove communicated with the mounting groove, and the guide portion is disposed in the first groove.

In some embodiments, the first inclined surface and the first surface are provided on the buckle, the second connecting portion is provided with a second inclined surface and a second surface, the first surface and the second surface are provided adjacent to each other, the first structural member and the second structural member are fixed along a first direction, the first inclined surface and the direction opposite to the first direction form a first included angle, and the first included angle is 40-50 degrees.

In some embodiments, the second inclined surface forms a second included angle with a direction opposite to the first direction, the second included angle being 25 ° to 35 °.

In some embodiments, a positioning element is arranged at one end of the first structural element, which is far away from the second structural element, and the positioning element abuts against the side wall of the bottom end of the mounting groove.

In some embodiments, the first structural member has a plurality of through holes formed therein, and the wire harness assembly includes a wire harness disposed in the through holes, the wire harness being secured to the first structural member by an adhesive.

In some embodiments, a first gap is provided between the first fixing portion and the housing, and a sealing member is provided in the first gap.

In some embodiments, a second groove is formed at an end of the first structural member away from the second structural member, and the through holes are located in the second groove.

In some embodiments, the housing includes a first housing, a second housing, and a third housing, the second housing is disposed between the first housing and the third housing, the mounting groove includes a first groove disposed in the first housing and a second groove disposed in the second housing, and the first groove and the second groove are in communication.

In some embodiments, a receiving groove is formed in the housing, and the wire harness assembly portion is received in the receiving groove.

In some embodiments, the first structure is smaller than the mounting groove in size, so that the first structure is assembled and fixed with the shell from inside to outside, and the second structure is larger than the mounting groove in size, so that the second structure is assembled and fixed with the first structure from outside to inside.

The embodiment of the application also provides electric equipment comprising the battery pack in the embodiment.

Embodiments of the present application also provide a method for manufacturing the battery pack, including the steps of:

step 1: fixing the first structural member of the fixing assembly with the wire harness assembly,

step 2: soldering a first end of a wire harness assembly to a circuit board, and then connecting the circuit board to an electrical core assembly such that the circuit board and the wire harness assembly are commonly disposed on the electrical core assembly;

and step 3: arranging the electric core assembly, the circuit board and the wiring harness assembly in a shell, wherein a second end of the wiring harness assembly penetrates through an installation groove of the shell;

and 4, step 4: and inserting a second structural member into the mounting groove from outside to inside and assembling and fixing the second structural member with the first structural member.

According to the battery pack, the first structural member is fixedly connected with the wire harness assembly, the second structural member is detachably connected with the first structural member, the second structural member is partially arranged on the outer surface of the shell, the first structural member and the second structural member are simply inserted, the connection structure between the wire harness assembly and the shell is simplified, and the production efficiency is improved.

Drawings

Fig. 1 is a schematic structural diagram of a battery pack in an embodiment.

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

Fig. 3 is a schematic structural view of the battery pack shown in fig. 1 with a portion of the housing removed.

Fig. 4 is a structural view of a first structural member of the battery pack shown in fig. 2.

Fig. 5 is a structural view of the first structural member shown in fig. 4 in another direction.

Fig. 6 is a schematic structural view of a second structural member in the battery pack shown in fig. 2.

Fig. 7 is a schematic view of the second structural member shown in fig. 6 in another orientation.

Fig. 8 is a sectional view of a part of the structure of the battery pack shown in fig. 1.

Fig. 9 is a partially enlarged view of the structure shown in fig. 8.

Fig. 10 is a cross-sectional view of the first structural member and the second structural member after they are connected.

Fig. 11 is a bottom view of the battery pack of fig. 1 with the third housing removed.

Fig. 12 is a partial enlarged view of the structure shown in fig. 11.

Fig. 13 is a sectional view of the battery pack shown in fig. 1 in another direction.

Fig. 14 is a structural view of the second case in one direction in the battery pack of fig. 2.

Fig. 15 is a schematic structural view of the second case in another direction in the battery pack of fig. 2.

Fig. 16 is a schematic diagram of a powered device in an embodiment.

Description of the main element symbols:

battery pack 100

Power utilization device 200

Housing 10

Mounting groove 101

First support part 102

Positioning hole 103

Second support part 104

First groove 105

Receiving groove 106

Reinforcing rib 1061

First housing 11

First groove 111

Second housing 12

Second groove 121

Second groove upper side wall 1210

Bottom end sidewall 1211

The second receiving space 120

Second upper space 1201

Second lower space 1202

Second shell sidewall 122

Second casing left side wall 1221

Second housing right sidewall 1222

First structural plate 123

Second structural panel 124

Third case 13

Third receiving space 130

Third shell side wall 131

Third case bottom wall 132

Electrical core assembly 20

Circuit board 30

Wire harness assembly 40

First end 41

Second end 42

Connecting assembly 421

Securing assembly 50

First structural member 51

First connection portion 511

Guide plate 5111

First fixed part 512

First side wall 5121

Buckle 513

First inclined face 5131

First face 5132

Guide part 514

Securing member 515

Through hole 516

Second groove 517

Second structural member 52

Second connecting part 521

Second fixing portion 522

Positioning part 5221

Second side wall 5222

First receiving groove 523

Bayonet 524

Second inclined surface 5241

Second surface 5242

First gap 53

First included angle a

Second included angle b

The specific implementation mode is as follows:

the technical solutions in the embodiments of the present application will be clearly and completely 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.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. When an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.

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. As used herein, the term "or/and" includes any and all combinations of one or more of the associated listed items.

The embodiment of the application provides a battery pack, which comprises a shell, a battery pack assembly, a circuit board, a wire harness assembly and a fixing assembly. The casing is equipped with the mounting groove, the electric core subassembly set up in the casing, the electric core subassembly includes a plurality of electric cores, the circuit board with the electric core subassembly electricity is connected, the pencil subassembly is including relative first end and the second end that sets up, first end weld in the circuit board, the second end stretches out the casing, fixed subassembly with the pencil subassembly is fixed, and at least the part is located the mounting groove. The fixing assembly comprises a first structural member and a second structural member, the first structural member is fixedly connected with the wire harness assembly, and the second structural member is detachably connected with the first structural member. The first structural member comprises a first connecting part and a first fixing part, and the first fixing part is arranged in the shell and fixed with the shell. The second structure comprises a second fixing part fixed with the shell, the second fixing part is arranged on the outer surface of the shell, the second structure is provided with a first accommodating groove, and the first connecting part is arranged in the first accommodating groove.

According to the battery pack, the first structural member is fixedly connected with the wire harness assembly, the second structural member is detachably connected with the wire harness assembly, the second structural member is partially arranged on the outer surface of the shell, the first structural member and the second structural member are simply inserted, the connection structure between the wire harness assembly and the shell is simplified, and the production efficiency is improved.

Some embodiments of the present application are described in detail. In the following embodiments, features of the embodiments may be combined with each other without conflict.

Referring to fig. 1 and 2, in one embodiment, a battery pack 100 includes a housing 10, a core assembly 20, a circuit board 30, a wire harness assembly 40, and a fixing assembly 50. The housing 10 is provided with a mounting groove 101. The battery pack 20 is disposed in the housing 10, and the battery pack 20 includes a plurality of battery cells stacked together. The circuit board 30 is electrically connected to the electric core assembly 20 and disposed in the housing 10. The wire harness assembly 40 includes a first end 41 and a second end 42 which are oppositely arranged, the first end 41 is welded to the circuit board 30, the second end 42 extends out of the housing 10, the second end 42 is provided with a connecting assembly 421, in some embodiments, the connecting assembly 421 may include a connector for transmitting current and a connector for transmitting signals, in other embodiments, the connecting assembly 421 may include a terminal or a conductive member arranged at the second end 42, and the specific number of the connecting assembly 421 is not limited, and can be increased or decreased according to requirements. The fixing member 50 is fixed to the wire harness assembly 40, and the fixing member 50 is at least partially disposed in the mounting groove 101. The size of the mounting groove 101 is larger than that of the connecting assembly 421, so that the connecting assembly 421 can pass through the mounting groove 101. Further, the housing 10 includes a first housing 11, a second housing 12 and a third housing 13, the second housing 12 is disposed between the first housing 11 and the third housing 13, the second housing 12 and the first housing 11 are sequentially disposed along a first direction, where the first direction is a direction indicated by an arrow a in fig. 2. Specifically, the second housing 12 is provided with a second receiving space 120, the third housing 13 is provided with a third receiving space 130, the second receiving space 120 is communicated with the third receiving space 130, and the electric core assembly 20 is arranged in the second receiving space 120 and the third receiving space 130. Further, the second shell 12 includes a plurality of second shell sidewalls 122, the plurality of second shell sidewalls 122 enclose to form a second receiving space 120, and specifically, four second shell sidewalls 122 enclose to form the second receiving space 120. Further, the third housing 13 includes a plurality of third housing sidewalls 131 and a third housing bottom wall 132, the plurality of third housing sidewalls 131 and the third housing bottom wall 132 enclose to form a third receiving space 130, and specifically, four third housing sidewalls 131 and the third housing bottom wall 132 enclose to form the third receiving space 130.

The second housing 12 is fixedly connected with the third housing 13, and the first housing 11 is disposed on a side of the second housing 12 departing from the third housing 13. The mounting groove 101 includes a first groove 111 provided in the first housing 11 and a second groove 121 provided in the second housing 12, and the first groove 111 and the second groove 121 communicate with each other.

Referring to fig. 2 and 8, the second housing 12 includes a first structural plate 123 disposed in the second receiving space 120, and the first structural plate 123 is in contact with the four second housing sidewalls 122. Preferably, the second housing 12 is a plastic insulating structure, and the second housing 12 is integrally formed by an injection molding process. The second receiving space 120 includes a second upper space 1201 and a second lower space 1202 disposed on opposite sides of the first structural plate 123 as viewed in the direction a. The second case 12 includes a second groove upper side wall 1210 provided in the second upper space 1201, and the second groove upper side wall 1210 is contact-connected to the first structural plate 123. The second upper space 1201 and the second lower space 1202 communicate through the second groove 121. The second fixing portion 522 is mounted to the second groove upper sidewall 1210, a gap M is formed between the second fixing portion 522 and the second groove upper sidewall 1210, the gap M is communicated with the second upper space 1201, external water or other impurities enter the second upper space 1201 through the gap, and the external water or other impurities are prevented from entering the second lower space 1202 through the gap, thereby affecting the use of the battery pack 100.

Referring to fig. 2, 13, 14 and 15, the second housing 12 includes a second structural plate 124 disposed in the second receiving space 120, the second structural plate 124 is connected to the first structural plate 123 in a contacting manner, the second housing sidewall 122 includes a second housing left sidewall 1221, a receiving groove 106 is formed between the second structural plate 124 and the second housing left sidewall 1221, and a portion of the wire harness assembly 40 located in the housing 10 is received in the receiving groove 106. A plurality of reinforcing ribs 1061 are further disposed in the accommodating groove 106, and the reinforcing ribs 1061 are used for positioning the harness assembly 40, reducing the shaking of the harness assembly 40 in the housing 10, and improving the strength of the housing 10. Preferably, the mounting groove 101 is disposed between the second structure plate 124 and the second case left sidewall 1221 as viewed along the direction a, and the receiving groove 106 is disposed adjacent to the mounting groove 101, so as to facilitate receiving the mounting harness assembly 40. The second casing side wall 122 includes a second casing right side wall 1222, a plurality of battery cells are disposed on the second structure plate 124 and the second casing right side wall 1222, the second structure plate 124 separates the battery cell assembly 20 from the wire harness assembly 40, interference between the wire harness assembly 40 and the battery cell assembly 20 is reduced, and damage to the battery cell assembly 20 and the wire harness assembly 40 is reduced.

Referring to fig. 2 to 7, the fixing assembly 50 includes a first structural member 51 and a second structural member 52, the first structural member 51 is fixedly connected to the wire harness assembly 40, and the second structural member 52 is detachably connected to the first structural member 51. The size of the first structural member 51 is smaller than that of the mounting groove 101, so that the first structural member 51 is assembled and fixed with the housing 10 from the inside of the housing 10 to the outside of the housing 10, and the size of the second structural member 52 is larger than that of the mounting groove 101, so that the second structural member 52 is assembled with the first structural member 51 from the outside of the housing 10 to the inside of the housing 10 and fixed with the housing 10 and the first structural member 51. During assembly, the first structural member 51 and the second structural member 52 are buckled inside and outside to fix the wire harness assembly 40 and the shell 10, so that the assembly process is simplified without screws or clamps. In addition, by assembling the second structural member 52 with the first structural member 51 from outside the housing 10 toward inside the housing 10, the size of the mounting groove 101 can be designed smaller, which is advantageous for reducing the material for sealing the mounting groove 101, for example, the size of the mounting groove 101 only needs to meet the size requirement that the wire harness assembly can pass through. In this embodiment, the second structural member 52 is integrally formed by an injection molding process. In other embodiments, the second structural member 52 may be assembled by assembling a plurality of structural members.

The first structural member 51 includes a first connecting portion 511 and a first fixing portion 512, and the first fixing portion 512 is disposed in the housing 10 and fixed to the housing 10. The second structure 52 includes a second connecting portion 521 and a second fixing portion 522, the second fixing portion 522 is disposed on the housing 10 and fixed to the housing 10, the second connecting portion 521 is connected to the second fixing portion 522, and the second connecting portion 521 is disposed in the mounting groove 101. The second connecting portion 521 is provided with a first receiving groove 523, and the first connecting portion 511 is provided in the first receiving groove 523. Specifically, the first structural member 51 and the second connecting portion 521 are disposed in the second groove 121, and the second fixing portion 522 is disposed in the first groove 111. The first groove 111 extends inward from the outer surface of the housing 10, and the second groove 121 extends from the second housing 12 toward the third housing 13.

In the embodiment of the present application, the size of the first connecting portion 511 is smaller than that of the mounting groove 101, the size of the first fixing portion 512 is greater than or equal to that of the mounting groove 101, so as to achieve the mounting and fixing of the first structural member 51 from the inside to the outside, the size of the second connecting portion 521 is smaller than that of the mounting groove 101, and the size of the second fixing portion 522 is greater than or equal to that of the mounting groove 101, so as to achieve the mounting and fixing of the second structural member 52 from the outside to the inside.

Referring to fig. 4 and 5 again, a plurality of through holes 516 are formed in the first structural member 51, the wire harness assembly 40 penetrates the first structural member 51 from the plurality of through holes 516, and a sealant is disposed in the plurality of through holes 516 to adhesively fix the first structural member 51 and the wire harness assembly 40. A second groove 517 is further disposed at an end of the first structural member 51 away from the second structural member 52, and the plurality of through holes 516 are located in the second groove 517. The wire harness assembly 40 is inserted into the through hole 516 from the second groove 517, and the second groove 517 is filled with a sealant, so as to seal the through hole 516 on one hand and be used for adhesively fixing the first structural member 51 and the wire harness assembly 40 on the other hand.

In the embodiment of the present application, the first connecting portion 511 of the first structural member 51 is substantially hollow, and includes a plurality of guide plates 5111 and a bottom plate 5112, wherein the guide plates 5111 are connected between the first fixing portion 512 and the bottom plate 5112. A plurality of the guide plates 5111 is disposed perpendicular to the base plate 5112. The through hole 516 penetrates through the bottom plate 5112, and the through hole 516 is disposed between two adjacent guide plates 5111. When the wire harness assembly 40 is inserted into the through-hole 516, the guide plate 5111 may serve to guide the insertion direction of the wire harness assembly 40, reducing the difficulty of assembling the battery pack 100. Further, a sealant may be filled between the adjacent guide plates 5111 to improve the connection strength between the wire harness assembly 40 and the first structural member 51.

Referring to fig. 2, 6, 7, 8 and 9, the first receiving groove 523 penetrates through the second connecting portion 521 and the second fixing portion 522, the first connecting portion 511 is inserted into the first receiving groove 523 from the free end of the second connecting portion 521, the free end of the first connecting portion 511 does not exceed the outer surface of the second fixing portion 522, and the free end of the second connecting portion 521 can abut against the end of the first fixing portion 512 facing the second structure 52. The periphery of the second fixing portion 522 protrudes from the peripheral side surface of the second connecting portion 521, in the embodiment of the present application, the second fixing portion 522 is a peripheral side flange provided at an end of the second connecting portion 521, the shape of the second fixing portion 522 matches the shape of the first groove 111, and the thickness of the second fixing portion 522 is smaller than or equal to the depth of the first groove 111.

The mounting groove 101 is provided with a first supporting portion 102, the outer surface of the housing 10 away from the electric core assembly 20 exceeds the first supporting portion 102, and the second fixing portion 522 is provided on the first supporting portion 102.

The first supporting portion 102 is disposed at one end of the second groove 121 connected to the first groove 111, and the first supporting portion 102 does not extend beyond the first housing 11. Specifically, the second housing 12 is provided with the first supporting portion 102, the first supporting portion 102 is provided at the periphery of the second groove 121, the second connecting portion 521 of the second structural member 52 is provided at the upper side wall 1210 of the second groove, the second fixing portion 522 of the second structural member 52 abuts against the first supporting portion 102, and the second fixing portion 522 does not exceed the outer surface of the first housing 11 away from the second housing 12. Preferably, in this embodiment, the second supporting portion 104 is a second groove upper side wall 1210. A positioning portion 5221 is disposed on a side surface of the second fixing portion 522 facing the first structural member 51, a positioning hole 103 is disposed on the first supporting portion 102, and the positioning portion 5221 is disposed in the positioning hole 103. The positioning portion 5221 can be in interference fit with the positioning hole 103 so as to fix the second fixing portion 522 in the first groove 111 of the mounting groove 101. The mounting groove 101 is further provided with a second supporting portion 104, the second supporting portion 104 is arranged below the first supporting portion 102 along the first direction, and the free end of the second connecting portion 521 is connected to the second supporting portion 104. The first support portion 102 and the second support portion 104 are provided in the second upper space 1201 as viewed in the a direction (in fig. 8 and 9), which is advantageous in reducing the size of the battery pack 100.

Referring to fig. 4, 7, 9 and 10, the first fixing portion 512 includes a first side wall 5121, a latch 513 is disposed on an outer side of the first side wall 5121, a bayonet 524 is disposed at an end of the second connecting portion 521 facing the first structural member 51, and the latch 513 is disposed on the bayonet 524 to connect the first structural member 51 and the second structural member 52, so as to reduce separation of the first structural member 51 and the second structural member 52 during pulling of the harness assembly 40. The buckle 513 is provided with a first inclined surface 5131 and a first surface 5132, and the end of the bayonet 524 of the second connecting portion 521 is provided with a second inclined surface 5241 and a second surface 5242. When the first structural member 51 is connected to the second structural member 52, the first face 5132 is disposed adjacent to the second face 5242. The first structural member 51 and the second structural member 52 are fixed in a first direction. The first inclined face 5131 and the opposite direction of the first direction form a first included angle a, and the first included angle a is 40-50 degrees. The second inclined surface 5241 forms a second included angle b with the opposite direction of the first direction, and the second included angle b is 25-35 °.

During the process of plugging the first structural member 51 and the second structural member 52, the first inclined face 5131 can slide along the second inclined face 5241 until the snap 513 is snapped into the bayonet 524. The first inclined surface 5131 and the second inclined surface 5241 can reduce the fastening difficulty between the latch 513 and the bayonet 524, so that the connection process between the first structural member 51 and the second structural member 52 is smoother. The arrangement of first face 5132 and second face 5242 facilitates reducing the accidental separation of catch 513 and bayonet 524, and increasing the connection strength of first structure 51 and second structure 52.

In the embodiment of the present application, the second connection portion 521 includes a plurality of second sidewalls 5222, and the bayonet 524 is disposed in the receiving space, and along the first direction, the second inclined surface 5241 of the bayonet 524 exceeds the second sidewalls 5222, and the free end of the second sidewalls 5222 is connected to the second support portion 104, so that a gap is formed between the second inclined surface 5241 and the inner wall of the mounting groove 101. During the assembly process of the first structural member 51 and the second structural member 52, the second inclined surface 5241 is deformed, and the gap can provide a certain deformation space and reduce the interference between the buckle 513 and the inner wall of the mounting groove 101.

Referring to fig. 4, 11 and 12, a guide portion 514 is further disposed at an outer side of the first side wall 5121, the housing 10 is provided with a first groove 105 communicated with the mounting groove 101, and the guide portion 514 is disposed in the first groove 105, so as to guide a mounting direction of the first structural member 51 and reduce a problem of reverse mounting of the first structural member 51. A first gap 53 is further provided between the first fixing portion 512 and the housing 10. Specifically, the first gap 53 is disposed between the first fixing portion 512 and the second groove 121, so that the first structural member 51 is smoothly inserted into the second groove 121, and the width of the first gap 53 is less than or equal to 0.3 mm. The second groove 121 limits the planar dimension of the first fixing portion 512 in the direction perpendicular to the first direction, and does not limit the length dimension of the first structural member 51 in the first direction, so that the first structural members 51 of different sizes and types can be mounted in the second groove 121, and the universality of the battery pack 100 is improved. Preferably, the battery pack 100 includes a sealant disposed in the first gap 53, and the sealant is injected from the inside of the second case 12 toward the first gap 53 to limit the external water or other impurities from entering the second case 12.

Referring to fig. 5, 12 and 13, a positioning element 515 is further disposed at an end of the first structural element 51 away from the second structural element 52, and the positioning element 515 abuts against a bottom side wall 1211 of the mounting groove 101. In the embodiment of the present application, the positioning element 515 is substantially in the shape of a hook, and when the first structural element 51 is connected to the second structural element 52, the positioning element 515 hooks the bottom sidewall 1211 of the second groove 121, so as to reduce the possibility that the fixing assembly 50 is separated from the housing 10 by an external force.

Referring to fig. 13 again, a receiving groove 106 is formed in the housing 10, and the wire harness assembly 40 is partially received in the receiving groove 106. Specifically, the receiving groove 106 is provided in the second housing 12 and the third housing 13.

An embodiment of the present application also provides a method of manufacturing the battery pack 100 described above, including:

step 1: the first structural member 51 of the fixing assembly 50 is fixed to the wire harness assembly 40.

Step 2: the first end 41 of the wire harness assembly 40 is soldered to the circuit board 30, and then the circuit board 30 and the core assembly 20 are connected such that the circuit board 30 and the wire harness assembly 40 are commonly provided to the core assembly 20.

And step 3: the electric core assembly 20, the circuit board 30 and the wire harness assembly 40 are disposed in the housing 10, and the second end 42 of the wire harness assembly 40 passes through the mounting groove 101.

And 4, step 4: the second structural member 52 of the fixing assembly 50 is inserted into the mounting groove 101 from the outside to the inside and assembled and fixed with the first structural member 51, thereby achieving the fixing of the wire harness assembly 40 with the housing 10.

Further, a plurality of wire harnesses in the wire harness assembly 40 penetrate through the first structural member 51, and glue is filled in the first structural member 51 to fix the wire harness assembly 40 and the first structural member 51.

Further, the manufacturing method of the battery pack 100 further includes injecting a sealant between the first fixing portion 512 in the second casing 12 and the casing 10.

Preferably, in some embodiments, the manufacturing method of the battery pack 100 is manufactured according to the above steps in sequence, and other manufacturing steps may be added between the above steps.

Referring to fig. 16, an electric device 200 is further provided in the embodiment of the present application, where the electric device 200 includes the battery pack 100 according to the above embodiment. The electric equipment includes but is not limited to electric vehicles, energy storage equipment, unmanned aerial vehicles and the like.

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

Claims

1. A battery pack, comprising:

a housing provided with a mounting groove;

the battery cell assembly is arranged in the shell and comprises a plurality of battery cells;

the circuit board is electrically connected with the electric core component;

a wire harness assembly including first and second oppositely disposed ends, the first end being soldered to the circuit board and the second end extending out of the housing;

the fixing component is fixed with the wire harness component, and at least part of the fixing component is arranged in the mounting groove;

the wire harness assembly is characterized in that the fixing assembly comprises a first structural member and a second structural member, the first structural member is fixedly connected with the wire harness assembly, and the second structural member is detachably connected with the first structural member;

the first structural member comprises a first connecting part and a first fixing part, and the first fixing part is arranged in the shell and fixed with the shell;

the second structure piece comprises a second fixing part fixed with the shell, the second structure piece is provided with a first accommodating groove, and the first connecting part is arranged in the first accommodating groove.

2. The battery pack according to claim 1, wherein the second structure includes a second connecting portion, the second connecting portion is connected to the second fixing portion, the second connecting portion is disposed in the mounting groove, and the second connecting portion is disposed with the first receiving groove.

3. The battery pack according to claim 2, wherein the mounting groove is provided with a first support portion, the outer surface of the housing away from the cell assembly exceeds the first support portion, and the second fixing portion is provided in the first support portion.

4. The battery pack according to claim 3, wherein the mounting groove is provided with a second support portion, and the free end of the second connection portion is provided at the second support portion.

5. The battery pack according to claim 3, wherein the second fixing portion is provided with a positioning portion, and the first supporting portion is provided with a positioning hole, the positioning portion being provided at the positioning hole.

6. The battery pack according to claim 2, wherein the first fixing portion includes a first sidewall, a snap is provided on an outer side of the first sidewall, and a bayonet is provided at an end of the second connecting portion facing the first structural member, and the snap is provided at the bayonet.

7. The battery pack according to claim 6, wherein a guide portion is provided at an outer side of the first sidewall, the case is provided with a first groove communicating with the mounting groove, and the guide portion is provided in the first groove.

8. The battery pack according to claim 6, wherein the latch has a first inclined surface and a first surface, the second connecting portion has a second inclined surface and a second surface, the first surface is disposed adjacent to the second surface, the first structural member and the second structural member are fixed in a first direction, the first inclined surface and a direction opposite to the first direction form a first included angle, and the first included angle is 40 ° to 50 °.

9. The battery of claim 8, wherein said second angled surface forms a second angle with an opposite direction of said first direction, said second angle being between 25 ° and 35 °.

10. The battery pack according to claim 1, wherein a positioning member is disposed at an end of the first structural member away from the second structural member, and the positioning member abuts against a bottom end side wall of the mounting groove.

11. The battery pack according to claim 1, wherein the first structural member is provided with a plurality of through holes, and the wire harness assembly includes a wire harness, the wire harness being provided in the through holes, the wire harness being fixed to the first structural member by an adhesive.

12. The battery pack according to claim 11, wherein a first gap is provided between the first fixing portion and the case, and a sealing member is provided in the first gap.

13. The battery of claim 11, wherein an end of the first structural member remote from the second structural member defines a second recess, and wherein the plurality of through-holes are positioned within the second recess.

14. The battery pack according to claim 1, wherein the case includes a first case, a second case, and a third case, the second case is provided between the first case and the third case, the mounting grooves include a first groove provided in the first case and a second groove provided in the second case, and the first groove and the second groove communicate.

15. The battery pack according to claim 1, wherein a receiving groove is provided in the case, and the wire harness assembly portion is received in the receiving groove.

16. The battery pack according to claim 1, wherein the first structure is smaller in size than the mounting groove so that the first structure is assembled and fixed with the housing from the inside to the outside, and the second structure is larger in size than the mounting groove so that the second structure is assembled and fixed with the first structure from the outside to the inside.

17. An electrical device comprising a battery as claimed in any one of claims 1 to 16.