CN109935775B - Square battery module structure - Google Patents
Square battery module structure Download PDFInfo
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- CN109935775B CN109935775B CN201910171313.6A CN201910171313A CN109935775B CN 109935775 B CN109935775 B CN 109935775B CN 201910171313 A CN201910171313 A CN 201910171313A CN 109935775 B CN109935775 B CN 109935775B
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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 invention relates to a square battery module structure, comprising: the battery pack comprises a box body, a cover plate, a battery pack, an overload protection block and a plurality of connecting blocks, wherein the battery pack is composed of a plurality of square batteries arranged in a row and is arranged in the box body; the square battery is provided with a positive electrode and a negative electrode; the negative electrode of one square battery positioned on the front side is connected with the positive electrode of one square battery positioned on the rear side through an overload protection block or a connection block; the overload protection block includes: two connecting blocks with the same cross-sectional area as the connecting blocks, and overload protection parts with two ends connected with the opposite ends of the two connecting blocks in a one-to-one correspondence manner; the cross-sectional area of the overload protection element is smaller than the cross-sectional area of the connecting piece. Square battery module structure, square battery pass through overload protection piece or even the connection of electricity piece and connect, reduce the overcurrent area through overload protection spare, overload protection spare fuses fast when the electric current risees unusually, can swiftly carry out overload protection to the battery module sensitively.
Description
Technical Field
The invention relates to the field of lithium ion batteries, in particular to a square battery module structure.
Background
The power battery is a core part of the electric automobile and provides power required by the whole automobile, the power battery generally consists of a plurality of battery modules, the power battery is divided into a square shape, a cylindrical shape and a soft bag shape according to different production processes, and the square battery module has the advantage of space saving; the power battery can generate overload heating when the load is overlarge in the using process, the insulation level can be reduced to generate potential safety hazards due to long-term overload, and even a circuit is burnt, so that the power battery needs to be subjected to overload protection; the structure of the overload protector can be obtained from the Chinese patent application number: 99201081.0, the utility model discloses an automobile storage battery overload protector obtains understanding; the traditional overload protector which is arranged separately from the power battery has the defect that the overload protection cannot be rapidly and sensitively carried out on the battery module; therefore, it is a problem to be solved urgently to design a square battery module structure capable of quickly and sensitively performing overload protection on a battery module.
Disclosure of Invention
The invention aims to overcome the defect that the conventional overload protector which is arranged separately from a power battery cannot quickly and sensitively perform overload protection on a battery module, and provides a square battery module structure which can quickly and sensitively perform overload protection on the battery module.
The specific technical scheme of the invention is as follows:
a prismatic battery module structure, comprising: the battery pack comprises a box body, a cover plate, a battery pack, at least one overload protection block and a plurality of connecting blocks, wherein the battery pack is composed of a plurality of square batteries arranged in a row and is arranged in the box body; the square battery is provided with a positive electrode and a negative electrode; the negative electrode of one square battery positioned on the front side is connected with the positive electrode of one square battery positioned on the rear side through an overload protection block or a connection block; the overload protection block includes: two connecting blocks with the same cross-sectional area as the connecting blocks, and overload protection parts with two ends connected with the opposite ends of the two connecting blocks in a one-to-one correspondence manner; the cross-sectional area of the overload protection element is smaller than the cross-sectional area of the connecting piece. Square battery module structure, square battery pass through overload protection piece or even the connection piece is connected, and overload protection piece includes the overload protection piece that the cross-sectional area is less than the cross-sectional area of connecting block, reduces the area of overflowing promptly through overload protection piece, and overload protection piece fuses fast when the electric current risees unusually, can carry out overload protection to the battery module swiftly sensitively.
Preferably, the square battery module structure further includes: the battery sampling device comprises a lithium battery control board, two battery sampling wire harnesses, a wire harness isolation board and a PCB (printed circuit board) connected with the lower end of a cover plate; two end plates arranged on the box body correspondingly block two ends of the battery pack one by one; the upper end of one end plate is provided with an accommodating counter bore; the positive electrodes and the negative electrodes are respectively positioned at two sides of the upper end of the corresponding square battery, and the positive electrodes and the negative electrodes of the square batteries of the battery pack are arranged in a staggered mode along the arrangement direction; the lithium battery control board is inserted into the accommodating counter bore; the wiring harness isolation plate is positioned between the positive electrode and the negative electrode of the square battery and is connected with the upper end of the square battery; the two battery sampling wire harnesses are respectively positioned at two sides of the wire harness isolation plate; one end of the battery sampling wire harness is connected with the upper end of the lithium battery control panel; the cover plate is connected with the box body, and the PCB presses the battery sampling wire harness and the upper end of the lithium battery control panel. The battery sampling wire harness is connected with the lithium battery control board into a whole, the lithium battery control board is inserted into the accommodating counter bore, the PCB presses the battery sampling wire harness and the lithium battery control board, space is saved, and integration of the battery module is facilitated.
Preferably, the materials of the overload protection block and the connecting block are all aluminum materials. Light weight, good conductivity and low melting point, and is beneficial to the rapid fusing of the overload protection part when the current abnormally rises.
Preferably, the overload protection member is a connection band welded to the upper sides of the opposite ends of the two connection blocks in one-to-one correspondence. The connecting band is very little with the connecting pad of connecting block, and the connecting band overflows and removes easily after fusing, and the solder joint is cleared up easily, does benefit to new connecting band of welding again and realizes restoreing.
Preferably, the overload protection pieces are transition blocks which are correspondingly connected with the opposite ends of the two connecting blocks in a one-to-one manner; the two side ends of the transition block are respectively provided with a groove, or one side end of the transition block is provided with a groove. The overload protection piece is a transition block which is connected with the opposite ends of the two connecting blocks in a one-to-one correspondence manner, and is beneficial to manufacturing.
Compared with the prior art, the invention has the beneficial effects that: square battery module structure, square battery pass through overload protection piece or even the connection piece is connected, and overload protection piece includes the overload protection piece that the cross-sectional area is less than the cross-sectional area of connecting block, reduces the area of overflowing promptly through overload protection piece, and overload protection piece fuses fast when the electric current risees unusually, can carry out overload protection to the battery module swiftly sensitively. The battery sampling wire harness is connected with the lithium battery control board into a whole, the lithium battery control board is inserted into the accommodating counter bore, the PCB presses the battery sampling wire harness and the lithium battery control board, space is saved, and integration of the battery module is facilitated. Overload protection piece, the material of even electric block is the aluminum product, and light in weight electric conductivity is good and the melting point is low, does benefit to overload protection spare and fuses fast when the electric current risees unusually. Overload protection piece is for the connecting band with the looks remote site upside one-to-one welding of two connecting blocks, and the connecting band is very little with the connection solder joint of connecting block, and the connecting band overflows and removes easily after fusing, and the solder joint is cleared up easily, does benefit to and welds new connecting band again and realizes restoreing. The overload protection piece is a transition block which is connected with the opposite ends of the two connecting blocks in a one-to-one correspondence manner, two side ends of the transition block are respectively provided with a groove, or one side end of the transition block is provided with a groove, and the overload protection piece is beneficial to manufacturing for the transition block which is connected with the opposite ends of the two connecting blocks in a one-to-one correspondence manner.
Drawings
FIG. 1 is a schematic diagram of an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a lithium battery control board, a battery sampling wire harness and an end plate;
FIG. 3 is a schematic diagram of the connection of the prismatic cell to the connection block and the overload protection block;
fig. 4 is a schematic diagram of the connection of a prismatic cell to a power connection block, another overload protection block.
In the figure: the battery box comprises a box body 1, a cover plate 2, a square battery 3, a connecting block 4, a positive electrode 5, a negative electrode 6, a connecting block 7, a lithium battery control board 8, a battery sampling wire harness 9, a wire harness isolation board 10, an end plate 11, an accommodating counter bore 12, a connecting belt 13, a transition block 14, a groove 15 and a side plate 16.
Detailed Description
The invention will be further described with reference to the drawings.
As shown in the attached figures 1, 2 and 3: a prismatic battery module structure, comprising: the battery pack comprises a box body 1, a cover plate 2, a battery pack, an overload protection block and a plurality of connecting blocks 4, wherein the battery pack is composed of twelve square batteries 3 arranged in a row and is arranged in the box body 1; the square battery 3 is provided with a positive electrode 5 and a negative electrode 6; the negative electrode 6 of one square battery 3 on the front side is connected to the positive electrode 5 of one square battery 3 on the rear side via an overload protection block or a connection block 4; the overload protection block includes: two connecting blocks 7 with the same cross-sectional area as the connecting block 4, and overload protection pieces with two ends correspondingly connected with the opposite ends of the two connecting blocks 7 one by one; the cross-sectional area of the overload protection is smaller than the cross-sectional area of the connecting piece 7. The box body 1 is rectangular; the two side plates 16 arranged on the box body 1 correspondingly block two side ends of the battery pack.
The square battery module structure further comprises: a lithium battery control board 8, two battery sampling harnesses 9, a harness isolation board 10, and a PCB (not shown) screwed with the lower end of the cover plate 2; two end plates 11 arranged on the box body 1 correspondingly block two ends of the battery pack one by one; the upper end of one end plate 11 is provided with a containing counter bore 12; the positive electrodes 5 and the negative electrodes 6 are respectively positioned at two sides of the upper end of the corresponding square battery 3, and the positive electrodes 5 and the negative electrodes 6 of the square batteries 3 of the battery pack are arranged in a staggered mode along the arrangement direction; the lithium battery control board 8 is inserted into the accommodating counter bore 12; the wiring harness isolation plate 10 is positioned between the positive electrode 5 and the negative electrode 6 of the square battery 3 and is connected with the upper end of the square battery 3; the two battery sampling wire harnesses 9 are respectively positioned at two sides of the wire harness isolation plate 10; one end of a battery sampling wire harness 9 is connected with the upper end of the lithium battery control board 8; the cover plate 2 is connected with the box body 1 through a buckle, and the PCB presses the upper ends of the battery sampling wire harness 9 and the lithium battery control board 8. The cross-sectional area of the accommodating counter bore 12 is rectangular; the lithium battery control board 8 and the wiring harness isolation board 10 are electrically connected with the PCB.
The overload protection block and the connecting block 4 are made of aluminum materials.
The overload protection piece is a connecting band 13 welded with the upper sides of the opposite ends of the two connecting blocks 7 in a one-to-one correspondence manner.
Another overload protection block is shown in fig. 4: the overload protection piece is a transition block 14 which is integrally connected with the opposite ends of the two connecting blocks 7 in a one-to-one correspondence manner; the transition block 14 is provided with a groove 15 at each of its two side ends. The groove 15 is arc-shaped.
In addition to the above embodiments, the technical features or technical data of the present invention may be reselected and combined to form new embodiments within the scope of the claims and the specification of the present invention, which are all realized by those skilled in the art without creative efforts, and thus, the embodiments of the present invention not described in detail should be regarded as specific embodiments of the present invention and are within the protection scope of the present invention.
Claims (3)
1. A prismatic battery module structure, comprising: box body, apron, constitute and adorn the group battery in the box body by the square battery that a plurality of becomes one row of range, characterized by, square battery module structure still include: at least one overload protection block, a plurality of connection blocks; the square battery is provided with a positive electrode and a negative electrode; the negative electrode of one square battery positioned on the front side is connected with the positive electrode of one square battery positioned on the rear side through an overload protection block or a connection block; the overload protection block includes: two connecting blocks with the same cross-sectional area as the connecting blocks, and overload protection parts with two ends connected with the opposite ends of the two connecting blocks in a one-to-one correspondence manner; the cross-sectional area of the overload protection piece is smaller than that of the connecting block; the square battery module structure further comprises: the battery sampling device comprises a lithium battery control board, two battery sampling wire harnesses, a wire harness isolation board and a PCB (printed circuit board) connected with the lower end of a cover plate; two end plates arranged on the box body correspondingly block two ends of the battery pack one by one; the upper end of one end plate is provided with an accommodating counter bore; the positive electrodes and the negative electrodes are respectively positioned at two sides of the upper end of the corresponding square battery, and the positive electrodes and the negative electrodes of the square batteries of the battery pack are arranged in a staggered mode along the arrangement direction; the lithium battery control board is inserted into the accommodating counter bore; the wiring harness isolation plate is positioned between the positive electrode and the negative electrode of the square battery and is connected with the upper end of the square battery; the two battery sampling wire harnesses are respectively positioned at two sides of the wire harness isolation plate; one end of the battery sampling wire harness is connected with the upper end of the lithium battery control panel; the cover plate is connected with the box body, and the PCB presses the battery sampling wire harness and the upper end of the lithium battery control panel; the overload protection block and the connecting block are made of aluminum materials.
2. The prismatic battery module structure according to claim 1, wherein the overload protecting members are connection strips welded to the upper sides of the opposite ends of the two connection blocks in one-to-one correspondence.
3. The prismatic battery module structure according to claim 1 or 2, wherein the overload protectors are transition blocks connected to opposite ends of the two connection blocks in a one-to-one correspondence; the two side ends of the transition block are respectively provided with a groove, or one side end of the transition block is provided with a groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910171313.6A CN109935775B (en) | 2019-03-07 | 2019-03-07 | Square battery module structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910171313.6A CN109935775B (en) | 2019-03-07 | 2019-03-07 | Square battery module structure |
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| Publication Number | Publication Date |
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| CN109935775A CN109935775A (en) | 2019-06-25 |
| CN109935775B true CN109935775B (en) | 2021-07-23 |
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| CN201910171313.6A Active CN109935775B (en) | 2019-03-07 | 2019-03-07 | Square battery module structure |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113540702B (en) * | 2021-07-19 | 2023-03-24 | 江苏正力新能电池技术有限公司 | Electricity core is gathered and monitoring device and battery module |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2017098038A (en) * | 2015-11-20 | 2017-06-01 | 矢崎総業株式会社 | Bus bar module and battery pack |
| CN107305938A (en) * | 2016-04-25 | 2017-10-31 | 比亚迪股份有限公司 | Cell connector, battery modules and electrokinetic cell bag |
| CN206293504U (en) * | 2016-12-16 | 2017-06-30 | 超威电源有限公司 | A kind of aluminum hull power battery modular structure |
| CN206619669U (en) * | 2017-03-31 | 2017-11-07 | 惠州市亿能电子有限公司 | A kind of battery modules of end plate built-in water passage |
| CN206806417U (en) * | 2017-05-09 | 2017-12-26 | 宁德时代新能源科技股份有限公司 | Power battery module |
| CN207489978U (en) * | 2017-12-11 | 2018-06-12 | 九江迅通新能源科技有限公司 | A kind of high-capacity lithium battery module |
| CN108448021A (en) * | 2018-04-11 | 2018-08-24 | 东莞塔菲尔新能源科技有限公司 | A kind of battery modules |
| CN208385478U (en) * | 2018-05-17 | 2019-01-15 | 威睿电动汽车技术（苏州）有限公司 | A kind of battery modules |
| CN209709072U (en) * | 2019-03-07 | 2019-11-29 | 浙江零跑科技有限公司 | A kind of rectangular cell modular structure |
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Address after: 310051 1st and 6th floors, no.451 Internet of things street, Binjiang District, Hangzhou City, Zhejiang Province Patentee after: Zhejiang Zero run Technology Co.,Ltd. Address before: 310051 1st and 6th floors, no.451 Internet of things street, Binjiang District, Hangzhou City, Zhejiang Province Patentee before: ZHEJIANG LEAPMOTOR TECHNOLOGY Co.,Ltd. |
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