CN208862103U

CN208862103U - Battery

Info

Publication number: CN208862103U
Application number: CN201821360360.2U
Authority: CN
Inventors: 于维珂; 王锭笙; 顾嘉玮
Original assignee: Shanghai Electric Guo Xuan Amperex Technology Ltd
Current assignee: Shanghai Electric Guo Xuan Amperex Technology Ltd
Priority date: 2018-08-22
Filing date: 2018-08-22
Publication date: 2019-05-14
Anticipated expiration: 2028-08-22

Abstract

The utility model discloses a kind of batteries comprising: multiple battery cores, shell, confluence piece, insulation spacer, fixed part and tab piece；Battery core is takeup type battery core and is set in shell；Confluence piece includes U-shaped structure body and protruding portion, and the one side of U-shaped structure body is welded in an end face of battery core, and the another side of U-shaped structure body is equipped with protruding portion；Fixed part is set to the opposite side of battery core relative to confluence piece, and fixed part covers and be fixed on the open-ended of shell, and fixed part is equipped with through-hole；Tab piece is set to the opposite side of the U-shaped structure body of confluence piece relative to fixed part, and tab piece is equipped with insertion hole, and protruding portion passes through through-hole, is inserted and fixed in insertion hole；The outer surface in portion and the medial surface of through-hole is coated and fixed in insulation spacer, thus converge piece and the insulation of fixed part and tab piece.The battery welds multiple battery cores by the confluence piece of U-shaped structure, so that battery core and shell are fixed, so that battery relative securement and welding also relatively easy.

Description

Battery

Technical field

The utility model relates to a kind of batteries.

Background technique

Rectangular lithium ion battery is a type important in existing lithium battery, core strueture generally have takeup type or Stacked two kinds of structures.The general monomer capacity of rectangular cell is higher, and required single battery negligible amounts, combo are simple in groups.Circle Cylindrical cell is the most mature battery types of existing market, and core strueture is usually winding-structure.Cylindrical battery cell winds skill Art is mature, and production efficiency is higher.

Lamination type electric core production efficiency is low, because monolithic cutting and lamination are all the workshop sections for expending working hour.Takeup type battery core, Single pole piece length is longer, requires production equipment and process control relatively high, thus technical difficulty is relatively high.

And takeup type battery core there are the problem of have: small cylindrical battery, in combo in groups, battery core is more, and welding is technology Difficult point.The technological means generally used is that battery core is welded to each other fixation, is then placed into battery, but in this way, Battery core is easy to shake in the shell, influences the firm of battery.

Utility model content

The technical problems to be solved in the utility model is to overcome battery core welding difficulty in rectangular cell, and battery is built on the sand Defect, a kind of battery is provided.

The utility model is to solve above-mentioned technical problem by following technical proposals:

A kind of battery comprising: multiple battery cores, shell, confluence piece, insulation spacer, fixed part and tab piece；

The battery core is takeup type battery core and is set in the shell；

The confluence piece includes U-shaped structure body and protruding portion, and the one side of the U-shaped structure body is welded in the battery core The another side of one end face, the U-shaped structure body is equipped with the protruding portion；

The fixed part is set to the opposite side of the battery core relative to the confluence piece, and the fixed part is covered and fixed In the open-ended of the shell, the fixed part is equipped with through-hole；

The tab piece is set to the opposite side of the U-shaped structure body of the confluence piece, the tab relative to the fixed part Piece is equipped with insertion hole, and the protruding portion passes through the through-hole, is inserted and fixed in the insertion hole；

The insulation spacer coats the outer surface of the fixed part and the medial surface of the through-hole, thus the confluence piece with The fixed part and tab piece insulation.

Preferably, the battery includes two confluence pieces, two insulation spacers, two for being respectively arranged on the both ends of the battery core A fixed part and two tab pieces.

Preferably, the protruding portion is welded in the insertion hole, alternatively, the protruding portion is adhered to the insertion hole, or Person, the protruding portion are connected in the insertion hole.

Preferably, each battery core is spaced apart from each other.

Preferably, in the one side of the U-shaped structure body be equipped with multiple grooves, the groove correspond to adjacent battery core it Between gap setting.

Preferably, the insulation spacer includes the first insulating trip and the second insulating trip, and first insulating trip is set to institute It states between fixed part and the U-shaped structure body, second insulating trip is set between the fixed part and the tab piece, institute The first insulating trip is stated equipped with cylindrical part outstanding, second insulating trip is provided with receiver hole, and the cylindrical part passes through described logical Hole is simultaneously inserted into the receiver hole, and the protruding portion passes through the cylindrical part.

Preferably, the insulation spacer includes the first insulating trip and the second insulating trip, and first insulating trip is set to institute It states between fixed part and the U-shaped structure body, second insulating trip is set between the fixed part and the tab piece, institute The second insulating trip is stated equipped with cylindrical part outstanding, first embolium is provided with receiver hole, and the cylindrical part passes through the through-hole And be inserted into the receiver hole, the protruding portion passes through the cylindrical part.

Preferably, the diameter of the battery core is 10-35mm, and the length of the battery core is 30-200mm.

Preferably, the shell is aluminum hull or aluminum plastic film.

Preferably, the battery has battery core described in multirow, and one end of battery core described in every row is correspondingly arranged the remittance Flow, multiple confluence pieces are welded in the same tab piece, and the protruding portion of multiple confluence pieces passes through same described solid Determine portion.

The positive effect of the utility model is: the battery welds multiple battery cores by the confluence piece of U-shaped structure, then It is fixed by the fixed part piece that will converge relative to the shell of battery, so that battery core and shell are fixed, so that battery is opposite Firm and weld also relatively easy, wherein tab and confluence piece are welded to each other fixed and form the clamping to fixed part, thus Confluence piece is fixed to each other with fixed part.

Detailed description of the invention

Fig. 1 is the schematic perspective view according to the battery of the preferred embodiment of the utility model.

Fig. 2 is the decomposition texture schematic diagram according to the battery of the preferred embodiment of the utility model.

Fig. 3 is the partial structure diagram according to the battery of the preferred embodiment of the utility model.

Fig. 4 is the schematic perspective view according to the confluence piece of the preferred embodiment of the utility model.

Description of symbols:

Battery 100

Battery core 110

Shell 120

Converge piece 130

U-shaped structure body 131

Protruding portion 132

Groove 133

Insulation spacer 140

First insulating trip 141

Cylindrical part 142

Second insulating trip 143

Receiver hole 144

Fixed part 150

Through-hole 151

Tab piece 160

It is inserted into hole 161

Specific embodiment

With reference to the accompanying drawing, the utility model is further illustrated by way of embodiment, but therefore will be originally unpractical It is novel to be limited among following scope of embodiments.

As shown in Figs 1-4, battery 100 includes: multiple battery cores 110, shell 120, confluence piece 130, insulation spacer 140, consolidates Determine portion 150 and tab piece 160.

Battery core 110 is takeup type battery core and is set in shell 120.

The piece 130 that converges includes U-shaped structure body 131 and protruding portion 132, and the one side of U-shaped structure body 131 is welded in battery core The another side of 110 end face, U-shaped structure body 131 is equipped with multiple protruding portion 132.The quantity of protruding portion 132 can basis It needs to be arranged, in the present embodiment, corresponding each battery core 110 is at least provided with a protruding portion 132.

Due to the small volume of battery core 110, generally use laser welding, need to be arranged two individual welding surfaces with It is separately connected battery core 110 and tab piece 160, and U-shaped structure body 131 just can satisfy above-mentioned condition.The piece that converges is preferably one Body formed.

Fixed part 150 is set to the opposite side of battery core 110 relative to confluence piece 130, and fixed part 150 is covered and is fixed on outer Shell 120 it is open-ended, fixed part 150 be equipped with through-hole 151.In the present embodiment, fixed part 150 is tablet, selectively, Fixed part 150 is also possible to other forms.Fixed part 150 is preferably fixed on shell 120 by the modes such as welding, being bonded.

Tab piece 160 is set to the opposite side of the U-shaped structure body 131 of confluence piece 130, tab piece 160 relative to fixed part 150 Equipped with insertion hole 161, protruding portion 132 passes through through-hole 151, is inserted and fixed in insertion hole 161.

The outer surface in portion 150 and the medial surface of through-hole 151 is coated and fixed in insulation spacer 140, thus converge piece 130 and fixation Portion 150 and tab piece 160 insulate.Battery core 110 cannot be connected to shell 120, can be leaked electricity, and therefore, be provided with insulation spacer 140, So that battery core 110 and fixed part 150 and tab piece 160 insulate, although so that fixed part 150 is welded in shell 120, battery core 110 It will not be connected between shell 120.

Battery 100 includes two insulation spacers 140, two of confluence piece 130, two for being respectively arranged on the both ends of battery core 110 Fixed part 150 and two tab pieces 160.

Protruding portion 132 is welded in insertion hole 161.Selectively, protruding portion 132 can also be solid by modes such as bonding clampings Due to insertion hole 161.

Each battery core 110 is spaced apart from each other.Being spaced apart from each other between battery core 110 can be to avoid 100 short circuit of battery.

Since battery core 110 is welded in confluence piece 130, battery core 110 is fixed between each other, will not contact with each other.

Multiple grooves 133 are equipped in the one side of U-shaped structure body 131, groove 133 corresponds between adjacent battery core 110 Gap setting.Groove 133, which is arranged, can mitigate the weight of U-shaped structure body 131, to mitigate the overall weight of battery 100.

Fig. 3 illustrates knot when confluence piece 130, insulation spacer 140, fixed part 150 and tab piece 160 are assembled together Structure.

In the present embodiment, insulation spacer 140 includes the first insulating trip 141 and the second insulating trip 143, the first insulating trip 141 are set between fixed part 150 and U-shaped structure body 131, and the second insulating trip 143 is set to fixed part 150 and tab piece 160 Between, the first insulating trip 141 is equipped with cylindrical part 142 outstanding, and the second insulating trip 143 is provided with receiver hole 144, cylindrical part 142 It across through-hole 151 and is inserted into receiver hole 144, protruding portion 132 passes through cylindrical part 142.In this way, cylindrical part 142 is in through-hole 151 Protruding portion 132 is covered, so that protruding portion 132 and fixed part 150 insulate.Selectively, insulation spacer 140 is also possible to directly paste Invest the one piece construction on the surface of fixed part 150, such as one whole plastic foil.

Alternatively, it is also possible to be equipped with cylindrical part 142 outstanding on the second insulating trip 143, and it is arranged in the first embolium Receiver hole 144, cylindrical part 142 pass through through-hole 151 and are inserted into receiver hole 144, and protruding portion 132 passes through cylindrical part 142.In this way, Protruding portion 132 and fixed part 150 can be equally made to insulate.

The diameter of battery core 110 is 10-35mm, and the length of battery core 110 is 30-200mm.

Shell 120 is preferably aluminum hull or aluminum plastic film.

Although only illustrating the battery 100 with a line battery core 110 in the present embodiment, selectively, battery 100 It can have multirow battery core 110, the corresponding confluence piece 130 of every row battery core 110, multiple confluence pieces 130 are welded in same tab The protruding portion 132 of piece 160, multiple confluence pieces 130 passes through same fixed part 150.By adjusting the length of each confluence piece 130, Battery core 110 can be made to be arranged in various shapes than a line, so as to produce the battery 100 of various shapes.

The battery 100 welds multiple battery cores 110 by the confluence piece 130 of U-shaped structure, then will be converged by fixed part 150 Piece 130 is fixed relative to the shell 120 of battery, so that battery core 110 and shell 120 are fixed, so that 100 relative securement of battery And welding is also relatively easy, and wherein tab piece 160 and confluence piece 130 are welded to each other fixed and form the folder to fixed part 150 It holds, so that confluence piece 130 is fixed to each other with fixed part 150.

In the description of the present invention, it should be understood that term " on ", "lower", "front", "rear", "left", "right", The orientation or positional relationship of the instructions such as "vertical", "horizontal", "top", "bottom", "inner", "outside" be orientation based on the figure or Positional relationship is merely for convenience of describing the present invention and simplifying the description, rather than the device or member of indication or suggestion meaning Part must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as limiting the present invention, Unless otherwise indicated herein.

Although the foregoing describe specific embodiment of the present utility model, it will be appreciated by those of skill in the art that This is merely illustrative of, and the protection scope of the utility model is defined by the appended claims.Those skilled in the art Under the premise of without departing substantially from the principles of the present invention and essence, various changes or modifications can be made to these embodiments, But these change and modification each fall within the protection scope of the utility model.

Claims

1. a kind of battery, characterized in that it comprises: multiple battery cores, shell, confluence piece, insulation spacer, fixed part and tab Piece；

The battery core is takeup type battery core and is set in the shell；

The confluence piece includes U-shaped structure body and protruding portion, and the one side of the U-shaped structure body is welded in one of the battery core The another side of end face, the U-shaped structure body is equipped with the protruding portion；

The fixed part is set to the opposite side of the battery core relative to the confluence piece, and the fixed part covers and is fixed on institute The open-ended of shell is stated, the fixed part is equipped with through-hole；

The tab piece is set to the opposite side of the U-shaped structure body of the confluence piece relative to the fixed part, and the tab piece is set There is insertion hole, the protruding portion passes through the through-hole, is inserted and fixed in the insertion hole；

The insulation spacer coats the outer surface of the fixed part and the medial surface of the through-hole, thus the confluence piece with it is described Fixed part and tab piece insulation.

2. battery as described in claim 1, which is characterized in that the battery include be respectively arranged on the battery core both ends two A confluence piece, two insulation spacers, two fixed parts and two tab pieces.

3. battery as claimed in claim 1 or 2, which is characterized in that the protruding portion is welded in the insertion hole, alternatively, institute It states protruding portion and is adhered to the insertion hole, alternatively, the protruding portion is connected in the insertion hole.

4. battery as claimed in claim 1 or 2, which is characterized in that each battery core is spaced apart from each other.

5. battery as claimed in claim 1 or 2, which is characterized in that be equipped in the one side of the U-shaped structure body multiple recessed Slot, the groove correspond to the gap setting between adjacent battery core.

6. battery as claimed in claim 1 or 2, which is characterized in that the insulation spacer includes that the first insulating trip and second are exhausted Embolium, first insulating trip are set between the fixed part and the U-shaped structure body, and second insulating trip is set to institute It states between fixed part and the tab piece, first insulating trip is equipped with cylindrical part outstanding, and second insulating trip is provided with Receiver hole, the cylindrical part pass through the through-hole and are inserted into the receiver hole, and the protruding portion passes through the cylindrical part.

7. battery as claimed in claim 1 or 2, which is characterized in that the insulation spacer includes that the first insulating trip and second are exhausted Embolium, first insulating trip are set between the fixed part and the U-shaped structure body, and second insulating trip is set to institute It states between fixed part and the tab piece, second insulating trip is equipped with cylindrical part outstanding, and first insulating trip is provided with Receiver hole, the cylindrical part pass through the through-hole and are inserted into the receiver hole, and the protruding portion passes through the cylindrical part.

8. battery as claimed in claim 1 or 2, which is characterized in that the diameter of the battery core is 10-35mm, the battery core Length is 30-200mm.

9. battery as claimed in claim 1 or 2, which is characterized in that the shell is aluminum hull or aluminum plastic film.

10. battery as claimed in claim 1 or 2, which is characterized in that the battery has battery core described in multirow, described in every row One end of battery core is correspondingly arranged the confluence piece, and multiple confluence pieces are welded in the same tab piece, multiple described The protruding portion of confluence piece passes through the same fixed part.