CN209822763U - Connection piece structure of power battery module - Google Patents
Connection piece structure of power battery module Download PDFInfo
- Publication number
- CN209822763U CN209822763U CN201920558495.8U CN201920558495U CN209822763U CN 209822763 U CN209822763 U CN 209822763U CN 201920558495 U CN201920558495 U CN 201920558495U CN 209822763 U CN209822763 U CN 209822763U
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- China
- Prior art keywords
- battery module
- connection piece
- contact plate
- power battery
- arc portion
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- 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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Abstract
The utility model belongs to the technical field of lithium ion battery, concretely relates to connection piece structure of power battery module, include the connection piece body and be fixed in the battery module output electrode of connection piece body, the connection piece body includes first contact plate, second contact plate and fixed plate, one side of first contact plate is provided with first arc portion, one side of second contact plate is provided with second arc portion, the fixed plate passes through first arc portion with first contact plate is connected, the fixed plate passes through second arc portion with the second contact plate is connected, compares with prior art, the utility model discloses can promote the ability of overflowing of the positive negative pole connection piece of battery module effectively, prevent that the temperature rise of battery module under heavy current work is too fast, improve the life of battery module.
Description
Technical Field
The utility model belongs to the technical field of lithium ion battery, concretely relates to connection piece structure of power battery module.
Background
With the continuous development of science and technology and the continuous enhancement of environmental awareness of people, more and more electronic devices prefer to select lithium batteries as main power supply sources, such as mobile phones, notebook computers, electric automobiles, electric trains and the like, which undoubtedly provides a wide space for the application and development of the lithium batteries. Among them, lithium batteries used for electric tools such as electric vehicles and electric trains are generally called power batteries.
In practical applications of power batteries, one or more single battery cells are generally combined into a battery module in a series/parallel connection manner, and the battery module is utilized to perform overall output, so the design of the battery module is very important. Chinese patent CN206864529U discloses a positive negative pole aluminum bar of square shell power phone module, including first rectangle panel and second rectangle panel, first rectangle panel one side is equipped with an arc panel, second rectangle panel one side is connected with the arc panel, and parallels with first rectangle panel, set up a circular through-hole on the second rectangle panel, the bolt has been inserted to circular through-hole, and the screw afterbody is in interference fit with the lower top cap of square shell power battery module, second rectangle panel passes through the bolt detachably to be fixed on the lower top cap of square shell power battery module. However, the above scheme has at least the following disadvantages:
1. because the connecting sheet of the output electrode of the battery module is directly provided with the hole and then is in threaded connection with the connecting sheet of the battery core, the effective contact area of the two connecting sheets is greatly reduced, the overcurrent capacity is reduced, and the anode and the cathode of the battery module are easy to generate high temperature while outputting large current, so that the service life of the battery module is influenced;
2. because the connection part of the connecting piece adopts a bolt connection mode, the bolt can be easily loosened due to external factors such as vibration, impact and the like during the long-term work of the battery module, so that the resistance of the contact part of the connecting piece is increased, and the normal use of the battery module is influenced;
3. because two connection pieces adopt the spiro union mode, need reserve the space of nut on the support of connection piece, therefore increased the cost of mould, also influenced battery module's size simultaneously.
In view of the above, there is a need for an improved connecting sheet of a battery module to meet practical needs.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a: the connecting piece structure of the power battery module can effectively improve the overcurrent capacity of the positive and negative connecting pieces of the battery module, prevent the battery module from rising too fast under the working of heavy current, and prolong the service life of the battery module.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a connection piece structure of power battery module, includes connection piece body and is fixed in the battery module output electrode of connection piece body, connection piece body includes first contact plate, second contact plate and fixed plate, one side of first contact plate is provided with first arc portion, one side of second contact plate is provided with second arc portion, the fixed plate passes through first arc portion with first contact plate is connected, the fixed plate passes through second arc portion with the second contact plate is connected. The utility model discloses in, battery module output electrode is used for being connected with the external circuit electricity, and first contact plate, second contact plate then are connected with the electric core connection piece on the electric core respectively, and the connection piece leg joint of fixed plate and battery module compares in the tight structure of traditional technology at this contact surface trompil spiral shell, the utility model discloses an effective area of contact is bigger, has improved the ability that overflows effectively.
As a power battery module's connection piece structure's an improvement, the locating hole has been seted up to the fixed plate, the fixed plate passes through the locating hole is installed in the reference column of battery module. Through the cooperation of locating hole and reference column, can make the utility model discloses carry out quick assembly, alignment time when having reduced the assembly has improved production efficiency, also is favorable to realizing automatic assembly simultaneously.
As a power battery module's connection piece structure's an improvement, the fixed plate thickness is 1.2 ~ 2.0.0 mm the utility model discloses in, if the fixed plate thickness is too little, can influence its ability of overflowing to lead to at heavy current during operation temperature rise too fast, can burn out battery module even if serious, make battery module scrap, if the fixed plate thickness is too big then can increase battery module's manufacturing cost.
As a power battery module's connection piece structure's an improvement, first contact plate thickness is 1.2 ~ 2.0.0 mm the utility model discloses in, if first contact plate thickness is too little, can influence its ability of overflowing to lead to at heavy current during operation temperature rise too fast, can burn out battery module even seriously, make battery module scrap, if first contact plate thickness is too big then can increase battery module's manufacturing cost.
As a power battery module's connection piece structure's an improvement, the thickness of second contact plate is 1.2 ~ 2.0.0 mm the utility model discloses in, if second contact plate thickness is too little, can influence its ability of overflowing to lead to at heavy current during operation temperature rise too fast, can burn out battery module even seriously, make battery module scrap, if second contact plate thickness is too big then can increase battery module's manufacturing cost.
As an improvement of the connecting sheet structure of the power battery module, the connecting sheet body is of an integrated structure. The connecting piece body adopts an integrally formed structure, so that on one hand, the assembly process of parts can be reduced, the production efficiency is improved, on the other hand, the number of dies can be reduced, and a large amount of cost is saved; in addition, compared with a split structure, the structure formed integrally is more compact, and the overcurrent capacity is stronger.
As an improvement of the connecting piece structure of the power battery module, the connecting piece body is a copper material or an aluminum material. Copper and aluminum are common conductive materials, have excellent conductivity and low cost, and are easy to process.
As a power battery module's connection piece structure's an improvement, battery module output electrode with the connected mode of connection piece body is riveting or welding. Riveting and welding are for traditional spiro union mode for the joint degree of connection piece body and battery module output electrode is higher, can not take place to become flexible because of the condition such as vibrations, the striking of battery module moreover in long-term use.
As an improvement of the connection piece structure of the power battery module, the power battery module further comprises an electroplated layer, and the electroplated layer covers the connection piece body and the surface of the output electrode of the battery module. The electroplating layer is additionally arranged, so that the surfaces of the connecting sheet body and the output electrode of the battery module can be protected, the connecting sheet body and the output electrode of the battery module are prevented from being oxidized in long-term use, the corrosion resistance effect is achieved, the service life of the connecting sheet is prolonged, in addition, the conductivity of the connecting sheet body can be improved, and the overcurrent capacity of the connecting sheet body is enhanced.
As an improvement of the connecting sheet structure of the power battery module, the electroplated layer is silver or nickel. Silver plating and nickel plating are common electroplating methods in circuit accessories, and can play a role in corrosion resistance on an electroplated body, wherein the nickel plating can also improve the wear resistance and appearance of the electroplated body, and the silver plating can improve the impedance of conductive contact, and can conduct electricity even after oxidation, thereby effectively improving the overcurrent capacity of the utility model, and corresponding selection can be carried out in actual production.
The beneficial effects of the utility model reside in that: the utility model comprises a connecting sheet body and a battery module output electrode fixed on the connecting sheet body, wherein the connecting sheet body comprises a first contact plate, a second contact plate and a fixed plate, one side of the first contact plate is provided with a first arc-shaped part, one side of the second contact plate is provided with a second arc-shaped part, the fixed plate is connected with the first contact plate through the first arc-shaped part, the fixed plate is connected with the second contact plate through the second arc-shaped part, the first contact plate and the second contact plate are both parallel to the fixed plate, compared with the prior art, the utility model has two conductive contact surfaces which are respectively connected with the connecting sheet of an electric core through the first contact plate and the second contact plate, and each contact surface is not provided with a through hole, thereby greatly improving the overcurrent capacity of the utility model, preventing the temperature of the utility model from rising too fast during the heavy current work, the service life is enhanced.
Drawings
The accompanying drawings, which are described herein, serve to provide a further understanding of the invention and constitute a part of this specification, and the exemplary embodiments and descriptions thereof are provided to explain the invention and not to constitute an undue limitation on the invention. In the drawings:
fig. 1 is a schematic structural view of the present invention;
FIG. 2 is an assembly view of the present invention;
wherein, 1-connecting the sheet body; 11-a first contact plate; 111-a first arc; 12-a second contact plate; 121-a second arc; 13-fixing the plate; 131-positioning holes; 2-battery module output electrode; 3-a positioning column; 4-connecting the battery cell; 5-connecting the sheet support.
Detailed Description
As used in the specification and in the claims, certain terms are used to refer to particular components. As one skilled in the art will appreciate, manufacturers may refer to a component by different names. This specification and claims do not intend to distinguish between components that differ in name but not function. In the following description and in the claims, the terms "include" and "comprise" are used in an open-ended fashion, and thus should be interpreted to mean "include, but not limited to. "substantially" means within an acceptable error range, within which a person skilled in the art can solve the technical problem to substantially achieve the technical result.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", horizontal "and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
The present invention will be described in further detail with reference to the accompanying drawings, which are not intended to limit the present invention.
As shown in fig. 1 ~ 2, a connection piece structure of power battery module, including connection piece body 1 and the battery module output electrode 2 that is fixed in connection piece body 1, connection piece body 1 includes first contact plate 11, second contact plate 12 and fixed plate 13, one side of first contact plate 11 is provided with first arc portion 111, one side of second contact plate 12 is provided with second arc portion 121, fixed plate 13 is connected with first contact plate 11 through first arc portion 111, fixed plate 13 is connected with second contact plate 12 through second arc portion 121, wherein, first contact plate 11 and second contact plate 12 all are parallel with fixed plate 13, the utility model discloses an in the actual assembly process, battery module output electrode 2 is used for carrying out the electricity with outside circuit and is connected, wherein, battery module output electrode 2 has adopted the M6 stainless steel bolt in this embodiment, first contact plate 11, second contact plate 12 then contact with electric core 4 respectively, can converge the electric current of each electric core in the battery module, thereby constitute battery module just, the negative pole total output, in addition, fixed plate 13 and battery module 5, the connection piece is connected in the electric core 4 contact surface of the electric core, thereby the utility model discloses the electric contact plate has improved the electric current efficiency of the utility model discloses the electric contact plate has improved the electric contact area on the electric contact plate has been reached the life effectively and has been reached the life-increasing the utility model discloses the electric contact area of the utility model discloses the electric contact area of the electric conduction of the electric pole is reached.
Preferably, locating hole 131 has been seted up to fixed plate 13, and fixed plate 13 is installed in battery module's reference column 3 through locating hole 131, and in actual assembly, because locating hole 131 and reference column 3's cooperation can make the utility model discloses carry out quick assembly, alignment time when having reduced the assembly has improved production efficiency, also is favorable to realizing automatic assembly simultaneously.
Preferably, the thickness of the fixing plate 13 is 1.2 ~ 2.0.0 mm, the thickness of the first contact plate 11 is 1.2 ~ 2.0.0 mm, and the thickness of the second contact plate 12 is 1.2 ~ 2.0.0 mm, so that the situation that the temperature rise is too fast due to the overcurrent capacity affected by too small thickness can be prevented, and the problem that the production cost is too high due to too large thickness can be avoided.
Preferably, the connecting sheet body 1 is of an integrally formed structure, and the connecting sheet body 1 adopts the integrally formed structure, so that on one hand, the assembly process of the components can be reduced, the production efficiency is improved, the number of die sinking of the components can be reduced, and a large amount of production cost is saved; on the other hand, compared with a split structure, the structure formed integrally is more compact, and the overcurrent capacity is stronger.
Preferably, the connecting piece body 1 is made of copper, the copper has excellent conductivity, is second only to silver in common conductive metal, and is low in cost and easy to process.
Preferably, battery module output electrode 2 is for riveting or welding with connection piece body 1's connected mode, and riveting and welding are for traditional spiro union for connection piece body 1 is higher with battery module output electrode 2's combination degree, and also can not take place to become flexible because of battery module's vibrations, circumstances such as striking in long-term use.
Preferably, still include the plating layer, in this embodiment, the plating layer adopts the mode of silver-colored electroplating to cover in connecting piece body 1 and battery module output electrode 2's surface, through the effect of silver-colored plating layer, can show the reinforcing the utility model discloses an oxidation resistance improves the utility model discloses a life, in addition, can also improve the impedance of electrically conductive contact, even also can conduct after the silver-colored plating layer oxidation, improved effectively the utility model discloses an overcurrent capacity.
While the foregoing description shows and describes several preferred embodiments of the invention, it is to be understood, as noted above, that the invention is not limited to the forms disclosed herein, but is not intended to be exhaustive of other embodiments, and is capable of use in various other combinations, modifications, and environments and is capable of changes within the scope of the inventive concept as expressed above, or as otherwise known in the relevant art. But that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention, which is to be limited only by the claims appended hereto.
Claims (10)
1. The utility model provides a connection piece structure of power battery module which characterized in that: including connection piece body (1) and be fixed in battery module output electrode (2) of connection piece body (1), connection piece body (1) includes first contact plate (11), second contact plate (12) and fixed plate (13), one side of first contact plate (11) is provided with first arc portion (111), one side of second contact plate (12) is provided with second arc portion (121), fixed plate (13) pass through first arc portion (111) with first contact plate (11) are connected, fixed plate (13) pass through second arc portion (121) with second contact plate (12) are connected.
2. The connection piece structure of power battery module of claim 1, characterized in that: the fixing plate (13) is provided with a positioning hole (131), and the fixing plate (13) is arranged on a positioning column (3) of the battery module through the positioning hole (131).
3. The connecting sheet structure of the power battery module according to claim 1, wherein the thickness of the fixing plate (13) is 1.2 ~ 2.0.0 mm.
4. The connecting sheet structure of the power battery module according to claim 1, wherein the thickness of the first contact plate (11) is 1.2 ~ 2.0.0 mm.
5. The connecting piece structure of the power battery module as claimed in claim 1, wherein the thickness of the second contact plate (12) is 1.2 ~ 2.0.0 mm.
6. The connection piece structure of power battery module of claim 1, characterized in that: the connecting piece body (1) is of an integrally formed structure.
7. The connection piece structure of power battery module of claim 1, characterized in that: the connecting piece body (1) is made of copper or aluminum.
8. The connection piece structure of power battery module of claim 1, characterized in that: the battery module output electrode (2) and the connecting sheet body (1) are connected in a riveting or welding mode.
9. The connection piece structure of power battery module of claim 1, characterized in that: the battery module further comprises an electroplated layer, and the electroplated layer covers the surfaces of the connecting sheet body (1) and the battery module output electrode (2).
10. The connection piece structure of power battery module of claim 9, characterized in that: the electroplated layer is silver or nickel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920558495.8U CN209822763U (en) | 2019-04-23 | 2019-04-23 | Connection piece structure of power battery module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920558495.8U CN209822763U (en) | 2019-04-23 | 2019-04-23 | Connection piece structure of power battery module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209822763U true CN209822763U (en) | 2019-12-20 |
Family
ID=68881196
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920558495.8U Expired - Fee Related CN209822763U (en) | 2019-04-23 | 2019-04-23 | Connection piece structure of power battery module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209822763U (en) |
-
2019
- 2019-04-23 CN CN201920558495.8U patent/CN209822763U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191220 |