CN105514336A - Battery pack connection structure - Google Patents
Battery pack connection structure Download PDFInfo
- Publication number
- CN105514336A CN105514336A CN201610040691.7A CN201610040691A CN105514336A CN 105514336 A CN105514336 A CN 105514336A CN 201610040691 A CN201610040691 A CN 201610040691A CN 105514336 A CN105514336 A CN 105514336A
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- China
- Prior art keywords
- installation portion
- battery pack
- groove
- lug
- projection
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/531—Electrode connections inside a battery casing
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Battery Mounting, Suspending (AREA)
- Connection Of Batteries Or Terminals (AREA)
Abstract
The invention provides a battery pack connection structure, belonging to the field of battery packs. The battery pack connection structure comprises at least two individual batteries, which are provided with lugs, wherein the lugs on each two adjacent individual batteries are connected through a connecting conductor, the connecting conductors are provided with mounting parts connected with the lugs, welding bodies are arranged on the edges of the mounting parts, and the mounting parts are connected with the lugs in a welding manner through the welding bodies. With the battery pack connection structure, the welding area is enlarged effectively, the reliable electrical connection is realized, and thus the plurality of individual batteries are connected in series or in parallel to form a battery pack. On the premise of guaranteeing connecting reliability, the connecting efficiency of the battery pack is improved, and the difficulty is lowered. The mature, stable and reliable processing technical process applicable to industrial production is realized, the industrial mass production is realized, and the production cost is lowered.
Description
Technical field
The present invention relates to battery art, in particular to a kind of battery pack syndeton.
Background technology
In the power battery pack structure of current new-energy automobile, normally by multiple battery strings, being together in parallel forms.This conduction between battery connects, and usually uses the mode that is flexible coupling to realize, has again the requirement that certain flexibility uses to adapt to electric automobile simultaneously.
The connection in series-parallel between each battery will be realized in battery pack, usually the conductor that is flexible coupling of copper or aluminum will be adopted, then be bolted or penetrate welding manner and they are connected, wherein bolt is fixedly connected with poor reliability affects electric conductivity, and it is higher to penetrate welding manner control difficulty, Welding Problems is serious, directly can affect the overall performance of firm welding and lithium battery group.
Summary of the invention
The invention provides a kind of battery pack syndeton, be intended to improve the problems referred to above.
The present invention is achieved in that
A kind of battery pack syndeton, comprise at least two battery cells, described battery cell is provided with lug, lug on any two adjacent described battery cells is connected by bonding conductor, described bonding conductor is provided with the installation portion be connected with described lug, the edge of described installation portion is provided with weldering body, and described installation portion is by described weldering body and described tab welding.
Further, described weldering body is laser welding weldering body, Diffusion Welding weldering body or ultra-sonic welded weldering body.
The connector that after laser welding weldering body is and adopts laser welding, welding material is formed, the connector that after Diffusion Welding weldering body is and adopts Diffusion Welding, welding material is formed, the connector that after ultra-sonic welded weldering body is and adopts ultra-sonic welded, welding material is formed.Owing to have employed laser welding, Diffusion Welding or ultra-sonic welded in the contact gap of the edge of installation portion and lug, can bonding area be increased, strengthen the fastness connected, and be easy to control, reach electrical property more reliably and connect.
Further, described lug engages mutually with described installation portion and the edge of described installation portion is connected with described lug by described weldering body.
Lug and installation portion mutually engage and can make to be connected more tight, play the effect of location, are convenient to accurate welding, to be welded by the contact gap between the edge of installation portion and lug.
Further, described lug is provided with groove, described installation portion embeds described groove, and the edge of described installation portion is connected with the cell wall of described groove by described weldering body.
Installation portion embeds groove, makes to realize Primary Location between installation portion and groove, then is coupled together in the edge of installation portion and the cell wall of groove by welding the weldering body obtained, and makes to connect more tight, and install more firm, electrical property connects more reliable.
Further, the two ends of described bonding conductor are respectively arranged with described installation portion, and the both sides of the edge of described installation portion connect respectively by two cell walls that described weldering body is relative with described groove.
The installation portion at the two ends of bonding conductor is respectively connected with the lug of a battery cell, and each installation portion is when being connected with a lug, the both sides of the edge of installation portion are all connected by two cell walls that weldering body is relative with groove respectively, then weld body and form two, make the connection between installation portion and lug more firm, ensure the performance of battery pack.
Further, described groove is groove, and the end face that described installation portion stretches into one end of described groove is concordant with the outer ledge of described groove.
The weldering body of connection portion and lug can do long as far as possible, thus increases bonding area further, strengthens the fastness connected.
Further, described lug is provided with projection in the position of the described bottom portion of groove of correspondence, described installation portion is provided with through hole, described projection is through described through hole, described installation portion is provided with described weldering body on the hole wall position of described through hole, and the hole wall of described through hole is connected by described weldering body with the edge of described projection.
By arranging projection, and the edge of projection is connected by welding body with the hole wall of the through hole on installation portion, be connected by welding body with the cell wall of lug in conjunction with the edge of installation portion, form the Welding Structure that edge adds protruding circumferential gap, both further increase bonding area at combination, form the connection of inside and outside two kinds of positions, make the connection of installation portion and lug very firm, connect more tight, reliability is higher, and the performance of battery pack is better.
Further, described projection is cylindrical, and described through hole is circular hole, and described projection is mated with described through hole.
Projection is cylindrical, and through hole is circular hole, makes the gap between projection and installation portion be circumferential gap, can make to weld between projection with installation portion more firm.
Further, described lug is provided with projection, described installation portion is provided with mounting groove, described projection embeds in described mounting groove, and the cell wall of described mounting groove is connected by described weldering body with the edge of described projection.
Embed in mounting groove by the projection on lug, play the effect of Primary Location, then the cell wall of weldering body by mounting groove formed by welding and the edge conjunction of projection, make being connected firmly of lug and installation portion further, connect more tight, ensure that the electrical property of battery pack connects.
Further, described projection is square block, and described mounting groove is the square groove mated with described projection, and the wherein three avris walls of described projection are connected by described weldering body with the cell wall of described mounting groove respectively.
A face is had to be the scope of freedom in square projection, toward the outside, and other three faces are the contact-making surface be connected with the cell wall of mounting groove, and can firmly be connected by weldering body, three faces are the contact-making surface of connection, further increase bonding area, connection can be made more tight, ensure the reliability of battery pack.
The beneficial effect of battery pack syndeton provided by the invention is: this battery pack syndeton is welded with the contact gap place of the lug on battery cell by the edge of installation portion and merged, welding forms weldering body, the edge of installation portion is connected by welding body with lug, increase effectively bonding area, reach reliable electrical property to connect, thus multiple battery cell is in series or in parallel to form battery pack.Battery pack syndeton provided by the invention, under guarantee connection reliability prerequisite, is raised the efficiency, and simplifies difficulty, and achieve can the mature and stable reliable processing process of suitability for industrialized production, can realize industrialized mass, reduce production cost.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme of the embodiment of the present invention, be briefly described to the accompanying drawing used required in embodiment below, be to be understood that, the following drawings illustrate only some embodiment of the present invention, therefore the restriction to scope should be counted as, for those of ordinary skill in the art, under the prerequisite not paying creative work, other relevant accompanying drawings can also be obtained according to these accompanying drawings.
The planar structure schematic diagram of the battery pack syndeton that Fig. 1 provides for first embodiment of the invention;
The partial enlarged drawing at the battery pack syndeton that Fig. 2 provides for first embodiment of the invention a place in FIG;
The perspective view of the battery pack syndeton that Fig. 3 provides for first embodiment of the invention;
The planar structure schematic diagram of the battery pack syndeton that Fig. 4 provides for second embodiment of the invention;
The perspective view of the battery pack syndeton that Fig. 5 provides for second embodiment of the invention;
The perspective view of the battery pack syndeton that Fig. 6 provides for third embodiment of the invention.
Figure acceptance of the bid note is respectively:
Battery cell 100; Lug 101; Groove 102; Protruding 103; Projection 104;
Bonding conductor 200; Installation portion 201; Mounting groove 202;
Weldering body 300.
Embodiment
The connection in series-parallel between each battery will be realized in battery pack, usually the conductor that is flexible coupling of copper or aluminum will be adopted, then be bolted or penetrate welding manner and they are connected, wherein bolt is fixedly connected with poor reliability affects electric conductivity, and it is higher to penetrate welding manner control difficulty, Welding Problems is serious, directly can affect the overall performance of firm welding and lithium battery group.
Given this, designer of the present invention is by long-term exploration and trial, and experiment repeatedly and effort, continuous reform and innovation, devise a kind of battery pack syndeton, the edge of installation portion 201 being connected by welding body 300 with lug 101, increase effectively bonding area, reach reliable electrical property to connect, thus multiple battery cell 100 is in series or in parallel to form battery pack.
For making the object of the embodiment of the present invention, technical scheme and advantage clearly, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, instead of whole embodiments.The assembly of the embodiment of the present invention describing and illustrate in usual accompanying drawing herein can be arranged with various different configuration and design.Therefore, below to the detailed description of the embodiments of the invention provided in the accompanying drawings and the claimed scope of the present invention of not intended to be limiting, but selected embodiment of the present invention is only represented.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
First embodiment
Refer to Fig. 1 ~ Fig. 3, present embodiments provide a kind of battery pack syndeton, this battery pack syndeton comprises at least two battery cells 100, and battery cell 100 can be two, three is more.The present embodiment is for four battery cells 100.Each battery cell 100 is provided with two lugs 101, adjacent lug 101 on any two adjacent battery cells 100 is connected by bonding conductor 200, bonding conductor 200 is provided with the installation portion 201 be connected with lug 101, the edge of installation portion 201 is provided with weldering body 300, and installation portion 201 is welded with lug 101 by weldering body 300.
In the present embodiment, the connector that after weldering body 300 is welding, welding material is formed, as preferably, weldering body 300 welds body for laser welding weldering body, Diffusion Welding weldering body or ultra-sonic welded.Wherein, the connector that after laser welding weldering body is and adopts laser welding, welding material is formed, the connector that after Diffusion Welding weldering body is and adopts Diffusion Welding, welding material is formed, the connector that after ultra-sonic welded weldering body is and adopts ultra-sonic welded, welding material is formed.
In the present embodiment, owing to have employed laser welding, Diffusion Welding or ultra-sonic welded in the contact gap of the edge of installation portion 201 and lug 101, penetrate welding manner compared to existing, the position of welding, in the contact position at both installation portion 201 and lug 101 edge, can increase bonding area, strengthen the fastness connected, and be easy to control, Welding Problems reduces greatly, ensure that firm welding, reach electrical property more reliably to connect, improve the overall performance of battery pack.
Lug 101 and installation portion 201 engage mutually and the edge of installation portion 201 is connected with lug 101 by welding body 300.Lug 101 and installation portion 201 mutually engaging can make to be connected more tight, play the effect of location, are convenient to accurate welding, to be welded by the contact gap between the edge of installation portion 201 and lug 101.
Lug 101 is provided with groove 102, installation portion 201 embeds groove 102, and the edge of installation portion 201 is connected with the cell wall of groove 102 by weldering body 300.
Installation portion 201 embeds groove 102, make to realize Primary Location between installation portion 201 and groove 102, then by welding the weldering body 300 obtained, the cell wall of the edge of installation portion 201 and groove 102 is coupled together, make connection tightr, install more firm, electrical property connects more reliable.
The two ends of bonding conductor 200 are respectively arranged with installation portion 201, and the both sides of the edge of installation portion 201 connect respectively by two cell walls that weldering body 300 is relative with groove 102.
The installation portion 201 at the two ends of bonding conductor 200 is respectively connected with the lug 101 of a battery cell 100, and each installation portion 201 is when being connected with a lug 101, the both sides of the edge of installation portion 201 are all connected by two cell walls that weldering body 300 is relative with groove 102 respectively, then weld body 300 and form two, make the connection between installation portion 201 and lug 101 more firm, ensure the performance of battery pack.
Groove 102 is groove, and the end face that installation portion 201 stretches into one end of groove 102 is concordant with the outer ledge of groove 102.Like this, connection portion 201 can do long as far as possible with the weldering body 300 of lug 101, thus increases bonding area further, strengthens the fastness connected.
The battery pack syndeton that the present embodiment provides to be welded with the contact gap place of the lug 101 on battery cell 100 by the edge of installation portion 201 and is merged, welding forms weldering body 300, the edge of installation portion 201 is connected by welding body 300 with lug 101, increase effectively bonding area, reach reliable electrical property to connect, thus multiple battery cell 100 is in series or in parallel to form battery pack.Battery pack syndeton provided by the invention, under guarantee connection reliability prerequisite, is raised the efficiency, and simplifies difficulty, and achieve can the mature and stable reliable processing process of suitability for industrialized production, can realize industrialized mass, reduce production cost.
Second embodiment
The battery pack syndeton that the present embodiment provides, its basic structure is identical with the first embodiment with the technique effect of principle and generation, is concise and to the point description, and the not mentioned part of the present embodiment part, can with reference to corresponding contents in the first embodiment.
The difference of the battery pack syndeton that the present embodiment provides and the battery pack syndeton that the first embodiment provides is, lug 101 is different with syndeton from the shape of installation portion 201.
Refer to Fig. 4 and Fig. 5, in the present embodiment, battery cell 100 is three.In addition, lug 101 is provided with projection 104, installation portion 201 is provided with mounting groove 202, projection 104 embeds in mounting groove 202, and the cell wall of mounting groove 202 is connected by welding body 300 with the edge of projection 104.
Embed in mounting groove 202 by the projection 104 on lug 101, play the effect of Primary Location, the weldering body 300 formed by welding is again by the edge conjunction of the cell wall of mounting groove 202 and projection 104, make being connected firmly of lug 101 and installation portion 201 further, connect more tight, ensure that the electrical property of battery pack connects.
Projection 104 is square block, and mounting groove 202 is the square groove mated with projection 104, and the wherein three avris walls of projection 104 are connected by welding body 300 with the cell wall of mounting groove 202 respectively.
A face is had to be the scope of freedom in square projection 104, toward the outside, and other three faces are the contact-making surface be connected with the cell wall of mounting groove 202, and can firmly be connected by weldering body 300, three faces are the contact-making surface of connection, further increase bonding area, connection can be made more tight, ensure the reliability of battery pack.
3rd embodiment
The battery pack syndeton that the present embodiment provides, its basic structure is identical with the first embodiment with the technique effect of principle and generation, is concise and to the point description, and the not mentioned part of the present embodiment part, can with reference to corresponding contents in the first embodiment.
The difference of the battery pack syndeton that the present embodiment provides and the battery pack syndeton that the first embodiment provides is, lug 101 is different from the syndeton of installation portion 201.
Refer to Fig. 6, in the present embodiment, the position of lug 101 bottom respective slot 102 is provided with protruding 103, installation portion 201 is provided with through hole, protruding 103 through through hole, installation portion 201 is provided with weldering body 300 on the hole wall position of through hole, and the hole wall of through hole is connected by welding body 300 with the edge of protruding 103.
By arranging protruding 103, and the edge of protruding 103 is connected by welding body 300 with the hole wall of the through hole on installation portion 201, be connected by welding body 300 with the cell wall of lug 101 in conjunction with the edge of installation portion 201, form the Welding Structure that edge adds protruding 103 circumferential gaps, both further increase bonding area at combination, form the connection of inside and outside two kinds of positions, make the connection of installation portion 201 and lug 101 very firm, connect more tight, reliability is higher, and the performance of battery pack is better.
Protruding 103 is cylindrical, and through hole is circular hole, and protruding 103 mate with through hole.Protruding 103 be cylindrical, and through hole is circular hole, makes the gap between protruding 103 and installation portion 201 be circumferential gap, can make projection 103 with weld between installation portion 201 more firm.
In the present invention, unless otherwise clearly defined and limited, the term such as term " installation ", " being connected ", " connection ", " fixing " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or integral; Can be mechanical connection, also can be electrical connection; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals or the interaction relationship of two elements.For the ordinary skill in the art, above-mentioned term concrete meaning in the present invention can be understood as the case may be.
In the present invention, unless otherwise clearly defined and limited, fisrt feature second feature it " on " or D score can comprise the first and second features and directly contact, also can comprise the first and second features and not be directly contact but by the other characterisation contact between them.And, fisrt feature second feature " on ", " top " and " above " comprise fisrt feature directly over second feature and oblique upper, or only represent that fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " below " and " below " comprise fisrt feature immediately below second feature and tiltedly below, or only represent that fisrt feature level height is less than second feature.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a battery pack syndeton, comprise at least two battery cells, it is characterized in that, described battery cell is provided with lug, lug on any two adjacent described battery cells is connected by bonding conductor, described bonding conductor is provided with the installation portion be connected with described lug, the edge of described installation portion is provided with weldering body, and described installation portion is by described weldering body and described tab welding.
2. battery pack syndeton according to claim 1, is characterized in that, described weldering body is laser welding weldering body, Diffusion Welding weldering body or ultra-sonic welded weldering body.
3. battery pack syndeton according to claim 2, is characterized in that, described lug engages mutually with described installation portion and the edge of described installation portion is connected with described lug by described weldering body.
4. battery pack syndeton according to claim 3, is characterized in that, described lug is provided with groove, and described installation portion embeds described groove, and the edge of described installation portion is connected with the cell wall of described groove by described weldering body.
5. battery pack syndeton according to claim 4, is characterized in that, the two ends of described bonding conductor are respectively arranged with described installation portion, and the both sides of the edge of described installation portion connect respectively by two cell walls that described weldering body is relative with described groove.
6. battery pack syndeton according to claim 5, is characterized in that, described groove is groove, and the end face that described installation portion stretches into one end of described groove is concordant with the outer ledge of described groove.
7. battery pack syndeton according to claim 4, it is characterized in that, described lug is provided with projection in the position of the described bottom portion of groove of correspondence, described installation portion is provided with through hole, described projection is through described through hole, described installation portion is provided with described weldering body on the hole wall position of described through hole, and the hole wall of described through hole is connected by described weldering body with the edge of described projection.
8. battery pack syndeton according to claim 7, is characterized in that, described projection is cylindrical, and described through hole is circular hole, and described projection is mated with described through hole.
9. battery pack syndeton according to claim 3, it is characterized in that, described lug is provided with projection, described installation portion is provided with mounting groove, described projection embeds in described mounting groove, and the cell wall of described mounting groove is connected by described weldering body with the edge of described projection.
10. battery pack syndeton according to claim 9, it is characterized in that, described projection is square block, and described mounting groove is the square groove mated with described projection, and the wherein three avris walls of described projection are connected by described weldering body with the cell wall of described mounting groove respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610040691.7A CN105514336A (en) | 2016-01-20 | 2016-01-20 | Battery pack connection structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610040691.7A CN105514336A (en) | 2016-01-20 | 2016-01-20 | Battery pack connection structure |
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| CN105514336A true CN105514336A (en) | 2016-04-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610040691.7A Pending CN105514336A (en) | 2016-01-20 | 2016-01-20 | Battery pack connection structure |
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| CN (1) | CN105514336A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105914336A (en) * | 2016-06-24 | 2016-08-31 | 合肥国轩高科动力能源有限公司 | Connection structure of power battery cell assembly |
| CN107768584A (en) * | 2016-08-22 | 2018-03-06 | 光阳工业股份有限公司 | Battery modules |
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| CN201051513Y (en) * | 2007-04-29 | 2008-04-23 | 春兰(集团)公司 | A spanning connection structure between batteries in battery group |
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| CN107768584A (en) * | 2016-08-22 | 2018-03-06 | 光阳工业股份有限公司 | Battery modules |
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Address after: 230000 Anhui Hefei economic and Technological Development Zone, Xin Xin Road, No. 62 power battery factory Applicant after: Huating (Hefei) Power Technology Co., Ltd. Address before: 230000 No. 26, No. 5, Tsing Luen Road, Hefei economic and Technological Development Zone, Anhui Applicant before: Huating (Hefei) Power Technology Co., Ltd. |
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Application publication date: 20160420 |