CN216928857U - Battery module and battery conductive frame - Google Patents
Battery module and battery conductive frame Download PDFInfo
- Publication number
- CN216928857U CN216928857U CN202122969710.3U CN202122969710U CN216928857U CN 216928857 U CN216928857 U CN 216928857U CN 202122969710 U CN202122969710 U CN 202122969710U CN 216928857 U CN216928857 U CN 216928857U
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- battery
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- positive electrode
- safety
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- 238000003466 welding Methods 0.000 claims abstract description 68
- 229910000679 solder Inorganic materials 0.000 claims description 6
- 230000002401 inhibitory effect Effects 0.000 description 6
- 238000009413 insulation Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000005476 soldering Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
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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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- Connection Of Batteries Or Terminals (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
The utility model provides a battery module and a battery conducting frame, wherein the battery module comprises a battery conducting frame and a plurality of battery cores, the battery conducting frame is applied to the connection of the plurality of battery cores in series or in parallel, and the positive pole or the negative pole of each battery core comprises a welding prohibition area and a safety welding area; the battery conducting frame comprises a plurality of conducting parts and a plurality of connecting parts, and each conducting part is connected with the other conducting part through the corresponding connecting part; each conductive part comprises a registration hole and a plurality of welding points; when the conductive part is welded on the positive electrode or the negative electrode of the corresponding battery cell through the welding point, the alignment hole is aligned to the welding prohibition area, and the welding point is welded on the safety welding area.
Description
Technical Field
The present invention relates to a battery module and a battery frame, and more particularly, to a battery frame that can be welded to a battery cell and has a corresponding structure according to a welding-forbidden region of the battery cell, and a battery module is formed by electrically connecting a plurality of battery cells in series or in parallel through the battery frame.
Background
In recent years, electric vehicles have been increasingly favored in response to the demand for environmental protection and carbon reduction. Therefore, many manufacturers are continuously entering the development of electric vehicles in order to gain business in the electric vehicle market.
The power source of the electric vehicle is a battery, such as a lithium battery. In order to increase the endurance of an electric vehicle, a battery module having a considerable number of battery cells is generally provided in the electric vehicle. The battery module comprises a plurality of battery cores and at least one battery conductive frame. The battery conducting frame is welded on the positive electrode or the negative electrode of the battery core, so that the battery cores can be connected together in series or in parallel through the battery conducting frame.
In order to increase the safety of the battery cell in use, some safety designs are made on the positive electrode or the negative electrode of the battery cell, for example: and (4) releasing the valve. However, when the battery conductive frame is welded to a specific region of the positive electrode or the negative electrode of the battery cell, these safety designs may be damaged.
In view of the above, the present invention provides a battery conductive frame with an innovative structure, wherein the battery conductive frame is designed according to a specific welding-forbidden region on a positive electrode or a negative electrode of a battery core, so that when the battery conductive frame is welded on the positive electrode or the negative electrode of the battery core, the specific welding-forbidden region can be avoided, and the safety design or the internal structure of the battery core is prevented from being damaged.
SUMMERY OF THE UTILITY MODEL
One objective of the present invention is to provide a battery module, which includes a battery conductive frame and a plurality of battery cores; the battery conducting frame is used for connecting a plurality of battery cores in series or in parallel; the battery conducting frame comprises a plurality of conducting parts and a plurality of connecting parts; each conductive part is connected with the other conductive part through the corresponding connecting part; the end face of the positive pole or the negative pole of each battery core is defined with at least one welding forbidding area and one safety welding area; the conductive part comprises a counterpoint hole and a plurality of welding points, the battery conductive frame can correspondingly design the shape of the counterpoint hole of the conductive part and determine the arrangement position of the welding points according to the welding forbidding area and the safety welding area on the positive electrode or the negative electrode of the battery core, and then the conductive part is positioned to the welding forbidding area by utilizing the counterpoint hole when being welded, so that the welding points can be accurately welded on the safety welding area to avoid being welded on the welding forbidding area, and the influence on the use of the battery core caused by the damage to the internal structure or the safety design of the battery core in the welding process of the battery conductive frame is avoided.
Another objective of the present invention is to provide a battery module, wherein the conductive part of the battery frame of the battery module is divided into two independent conductive pieces and a slit is formed between the two conductive pieces; the conductive part is welded on the anode or the cathode of the battery core through the welding points of the two conductive sheets, the conductive part is cut into two independent conductive sheets, when the internal pressure release valve of the anode or the cathode of the battery core is opened, the pressure can be released only by opening the single conductive sheet, and the probability that the valve cannot be opened when the battery core is out of control due to heat is reduced.
Another objective of the present invention is to provide a battery module, wherein an insulating sheet is further disposed between the positive electrode of each battery cell and the corresponding conductive portion, and when the conductive portion is welded to the positive electrode of the battery cell, the positive electrode and the negative electrode of the same battery cell can be prevented from being electrically connected through the conductive portion due to the electrical insulating property of the insulating sheet, so as to reduce the risk of short circuit of the battery cell.
In order to achieve the above object, the present invention provides a battery frame, which is applied to a connection of a plurality of battery cores in series or in parallel, wherein a positive electrode or a negative electrode of each battery core includes a first welding prohibiting region and a safety welding region, the battery frame comprises: a plurality of conductive portions, each conductive portion including an alignment hole and a plurality of solder points; and a plurality of connecting parts, each conductive part is connected with another conductive part through the corresponding connecting part; when the conductive parts are combined on the positive electrode or the negative electrode of the corresponding battery cell, the alignment holes are aligned to the first welding forbidding area, and the welding points are welded on the safety welding area.
In an embodiment of the present invention, the conductive portion includes two conductive sheets, the two conductive sheets are respectively provided with a soldering point, and a slit exists between the two conductive sheets.
In one embodiment of the present invention, the alignment holes overlap portions of the slits.
In an embodiment of the utility model, the positive electrode or the negative electrode of each battery cell further includes a second welding prohibition region, and the safety welding region is located between the first welding prohibition region and the second welding prohibition region.
In an embodiment of the utility model, the battery further includes a plurality of insulation sheets, and each insulation sheet is disposed between the corresponding conductive portion and the positive electrode of the corresponding battery cell.
In an embodiment of the utility model, the insulating sheet includes a hole, and the welding point of the conductive portion is welded to the positive electrode of the battery core through the hole of the insulating sheet.
The present invention also provides a battery module including: the positive electrode or the negative electrode of each battery core comprises a first welding forbidding area and a safety welding area; and a battery conductive frame, it applies to the connection of series connection or parallel connection of a plurality of battery cores, the battery conductive frame includes: a plurality of conductive portions, each conductive portion including an alignment hole and a plurality of solder points; and a plurality of connecting parts, each conductive part is connected with another conductive part through the corresponding connecting part; when the conductive parts are combined on the positive electrode or the negative electrode of the corresponding battery cell, the alignment holes are aligned to the first welding forbidding area, and the welding points are welded on the safety welding area.
Drawings
Fig. 1 is an exploded perspective view of a battery conductive frame and a battery cell of a battery module according to an embodiment of the utility model.
Fig. 2 is a perspective view illustrating an embodiment of a battery conductive frame and a battery cell of a battery module according to the present invention.
Fig. 3A is a first perspective view of a battery cell of the present invention.
Fig. 3B is a perspective view of a battery cell according to the present invention from a second perspective.
Fig. 3C is a schematic view illustrating the definition of the welding-inhibited region and the safety welding region on the end faces of the electrodes of the battery cell according to the present invention.
FIG. 4 is an enlarged view of the conductive part of the battery frame according to the present invention.
Fig. 5 is a schematic view illustrating the conductive part of the battery lead frame of fig. 4 combined with the welding-inhibited area and the safety welding area of the battery cell of fig. 3C.
Fig. 6 is an exploded perspective view of a battery conductive frame and a battery cell of a battery module according to another embodiment of the utility model.
Fig. 7 is a perspective view of a battery module according to another embodiment of the present invention.
Appendix mark description: 100-a battery module; 10-a battery cell; 11-positive electrode; 121-a first no-weld zone; 122-a second no-weld zone; 123-safe welding zone; 13-a negative electrode; 20-a battery conducting rack; 21-a conductive portion; 210-a conductive sheet; 211-alignment holes; 213-welding points; 215-thin seam; 23-a connecting part; 30-an insulating sheet; 31-holes.
Detailed Description
Referring to fig. 1, fig. 2, fig. 3A, fig. 3B and fig. 3C, an exploded perspective view, a combined perspective view, a first perspective view, a second perspective view and a schematic view of defining a weld inhibiting region and a safety weld region on an electrode end surface (such as an end surface of a negative electrode or a positive electrode) of a battery module according to an embodiment of the present invention are respectively shown.
As shown in fig. 1, fig. 2, fig. 3A and fig. 3B, the battery module 100 of the present invention includes a plurality of battery cells 10 and a battery conductive frame 20. The battery cell 10 includes a positive electrode 11 and a negative electrode 13. The positive electrode 11 is disposed at one end of the battery cell 10, and the negative electrode 13 is disposed at the other end of the battery cell 10 and extends to the periphery of the positive electrode 11 along the can of the battery cell 10. The battery conductive frame 20 can be welded on the positive electrode 11 or the negative electrode 13 of the battery cells 10, so that the battery cells 10 can be connected in series or in parallel through the battery conductive frame 20 to form the battery module 100.
Safety features are typically present inside the positive electrode 11 or the negative electrode 13 of the battery cell 10, such as: at least one pressure release valve is arranged inside the positive electrode 11 or the negative electrode 13 of the battery core 10, and when the battery core 10 is out of control thermally, the pressure release valve can be opened, so that gas generated in the thermal runaway process can be released through the pressure release valve, gas accumulation is avoided, and explosion of the battery core is prevented. Here, as shown in fig. 3C, in order to avoid the safety damage when the battery lead frame 20 is welded to the positive electrode 11 and the negative electrode 13 of the battery cell 10, a first weld inhibiting region 121, a second weld inhibiting region 122 and a safety weld 123 are defined on the end surface of the positive electrode 11 or the negative electrode 13 of the battery cell 10. The first welding-inhibited region 121 is located at the center of the positive electrode 11 or the negative electrode 13 of the battery cell 10, and the safety welding-inhibited region 123 is provided between the first welding-inhibited region 121 and the second welding-inhibited region 122.
The battery frame 20 includes a plurality of conductive portions 21 and a plurality of connecting portions 23. Each conductive portion 21 is connected to the positive electrode 11 or the negative electrode 13 of the corresponding battery cell 10, and the other conductive portion 21 is connected through the corresponding connecting portion 23.
Further referring to fig. 4 and 5, the conductive portion 21 includes an alignment hole 211 and a plurality of solder joints 213. When the conductive part 21 is coupled to the positive electrode 11 or the negative electrode 13 of the battery cell 10 and the alignment hole 211 is aligned to the first weld-inhibiting region 121, the welding point 213 is located on the safety weld region 123, so that the welding point 213 can be welded to the safety weld region 123 safely, and the welding point 213 is not welded to the first weld-inhibiting region 121 and the second weld-inhibiting region 122. Herein, the battery conductive frame 20 of the present invention is designed to correspond to the shape of the alignment holes of the conductive part 22 and the arrangement positions of the welding points 213 according to the welding-inhibited areas 121 and 122 and the safety welding area 123 on the positive electrode 11 or the negative electrode 13 of the battery core, and then, the alignment holes 211 of the conductive part 21 are used for positioning during welding, so that the welding points 213 can be accurately welded on the safety welding area 123 and avoid being welded on the welding-inhibited areas 121 and 122, thereby preventing the internal structure or the safety design of the battery core 10 from being damaged and affecting the use of the battery core 10.
Further, the conductive part 21 includes two conductive sheets 210. The conductive strips 210 are respectively provided with one or more soldering points 213. A slit 215 is formed between the conductive sheets 210, and the slit 215 extends through the portion where the alignment hole 211 is formed, such that the alignment hole 211 overlaps the slit 215, and the alignment hole 211 forms two corresponding slots on the conductive sheets 210. As mentioned above, the inside of the positive electrode 11 or the negative electrode 13 of the battery cell 10 is provided with a pressure release valve, and when the internal gas pressure is too high due to thermal runaway of the battery cell 10, the pressure release valve can also be opened to release the pressure. When the conductive portion 21 is welded to the positive electrode 11 or the negative electrode 13 of the battery cell 10, the weight of the conductive portion 21 may hinder the valve opening operation of the relief valve; herein, the battery conducting frame 20 of the present invention divides the conducting part 21 into two independent conducting strips 210, so that when the pressure relief valve is opened, the conducting strip is pressed by only one conducting strip 210, for example, when the pressure relief valve is opened from the right side of the positive electrode 11 or the negative electrode 13 of the battery cell 10, the conducting strip is pressed by only the conducting strip 210 on the right side, and therefore, the pressure relief can be performed only by opening the conducting strip 210 on the right side; alternatively, when the pressure relief valve is opened from the left side of the positive electrode 11 or the negative electrode 13 of the battery cell 10, the pressure relief valve is pressed only by the left conductive sheet 210, and therefore, the pressure relief valve can be released only by spreading the left conductive sheet 210. Thus, when the relief valve of the battery cell 10 is opened, the relief valve can be released by only pushing half of the conductive portions 21, and the situation that the valve cannot be opened when the battery cell 10 is thermally runaway can be reduced.
Referring to fig. 6 and fig. 7, an exploded view and a combined view of a battery conductive frame and a battery cell of a battery module according to another embodiment of the present invention are shown, and fig. 3A and fig. 3B are also shown. As shown in fig. 3A and 3B, the end face of the positive electrode 11 of the battery cell 10 is provided with a negative electrode 13 connected to the can of the battery cell 10 on the periphery thereof in addition to the positive electrode 11 provided at the center thereof. When the conductive portion 21 is welded to the positive electrode 11 of the battery cell 10, the conductive portion 21 may be burrs or bent due to collision, so that the positive electrode 11 and the negative electrode 13 of the same battery cell 10 are electrically connected together, thereby causing a short circuit of the battery cell 10.
In order to avoid short circuit caused by the electrical connection between the positive electrode 11 and the negative electrode 13 of the same battery cell 10 through the conductive portions 21, as shown in fig. 6 and 7, an insulating sheet 30 is further disposed between the positive electrode 11 and the corresponding conductive portion 21 of each battery cell 10. The insulating sheet 30 may also be an insulating paper sheet or an insulating film. The insulating sheet 30 includes a hole 31. The welding points 213 of the conductive portions 21 are welded to the safety welding areas 123 of the positive electrode 11 of the battery cell 10 through the holes 31 of the insulating sheet 30.
Thus, when the conductive part 21 is welded to the positive electrode 11 of the battery cell 10, the positive electrode 11 and the negative electrode 13 of the same battery cell 10 can be prevented from being electrically connected together through the conductive part 21 due to the electrical insulation property of the insulation sheet 30, so as to reduce the risk of short circuit of the battery cell 10.
The above description is only one preferred embodiment of the present invention, and should not be taken as limiting the scope of the utility model, which is defined by the appended claims, and all changes and modifications that are equivalent to the shape, structure, characteristics and spirit of the utility model are intended to be included therein.
Claims (10)
1. A battery conductive frame is applied to the connection of a plurality of battery cores in series or in parallel, the positive pole or the negative pole of each battery core comprises a first welding forbidding area and a safety welding area, and the battery conductive frame comprises:
a plurality of conductive portions, each of the conductive portions including an alignment hole and a plurality of solder points; and
a plurality of connecting parts, each conductive part is connected with another conductive part through the corresponding connecting part;
when the conductive parts are combined on the corresponding positive electrodes or negative electrodes of the battery cells and the alignment holes are aligned to the first welding-forbidden areas, the welding points are welded on the safety welding areas.
2. The battery holder of claim 1, wherein the conductive portion comprises two conductive pieces, the solder joints are disposed on the two conductive pieces, and a slit is formed between the two conductive pieces.
3. The battery conducting frame according to claim 2, wherein the aligning hole is overlapped with a part of the slit.
4. The battery holder as claimed in claim 1, wherein the positive or negative electrode of each battery cell further comprises a second welding-prohibiting region, and the safety welding region is located between the first welding-prohibiting region and the second welding-prohibiting region.
5. The battery holder of claim 1, further comprising a plurality of insulating plates, each insulating plate being disposed between the corresponding conductive portion and the corresponding positive electrode of the battery cell.
6. The battery holder of claim 5, wherein the insulating sheet includes a hole, and the welding point of the conductive portion is welded to the positive electrode of the battery cell through the hole of the insulating sheet.
7. A battery module, comprising:
the positive electrode or the negative electrode of each battery core comprises a first welding forbidding area and a safety welding area; and
a battery conductive frame applied to a connection of a plurality of the battery cells in series or in parallel, the battery conductive frame comprising:
a plurality of conductive portions, each of the conductive portions including an alignment hole and a plurality of solder points; and
a plurality of connecting parts, each conductive part is connected with another conductive part through the corresponding connecting part;
when the conductive parts are combined on the corresponding positive electrodes or negative electrodes of the battery cells and the alignment holes are aligned to the first welding-forbidden areas, the welding points are welded on the safety welding areas.
8. The battery module of claim 7, wherein the conductive portion comprises two conductive strips, the two conductive strips are respectively provided with the welding points, and a slit exists between the two conductive strips.
9. The battery module of claim 8, wherein the alignment hole overlaps a portion of the slit.
10. The battery module of claim 7, further comprising a plurality of insulating sheets, each insulating sheet disposed between the corresponding conductive portion and the corresponding positive electrode of the battery cell, wherein the insulating sheets comprise a hole, and the welding point of the conductive portion is welded to the positive electrode of the battery cell through the hole of the insulating sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122969710.3U CN216928857U (en) | 2021-11-30 | 2021-11-30 | Battery module and battery conductive frame |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122969710.3U CN216928857U (en) | 2021-11-30 | 2021-11-30 | Battery module and battery conductive frame |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216928857U true CN216928857U (en) | 2022-07-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122969710.3U Active CN216928857U (en) | 2021-11-30 | 2021-11-30 | Battery module and battery conductive frame |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216928857U (en) |
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2021
- 2021-11-30 CN CN202122969710.3U patent/CN216928857U/en active Active
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