CN218334199U - Battery conductive frame - Google Patents
Battery conductive frame Download PDFInfo
- Publication number
- CN218334199U CN218334199U CN202222337294.XU CN202222337294U CN218334199U CN 218334199 U CN218334199 U CN 218334199U CN 202222337294 U CN202222337294 U CN 202222337294U CN 218334199 U CN218334199 U CN 218334199U
- Authority
- CN
- China
- Prior art keywords
- battery
- fixing unit
- conductive sheet
- fixing
- pressing
- Prior art date
- 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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Links
- 238000003466 welding Methods 0.000 claims abstract description 52
- 238000003825 pressing Methods 0.000 claims abstract description 41
- 229910000679 solder Inorganic materials 0.000 description 14
- 238000000034 method Methods 0.000 description 8
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 239000007769 metal material Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000002955 isolation Methods 0.000 description 3
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 238000004026 adhesive bonding Methods 0.000 description 2
- 239000003792 electrolyte Substances 0.000 description 2
- 229910052744 lithium Inorganic materials 0.000 description 2
- 239000007773 negative electrode material Substances 0.000 description 2
- 239000007774 positive electrode material Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 1
- 235000011613 Pinus brutia Nutrition 0.000 description 1
- 241000018646 Pinus brutia Species 0.000 description 1
- 239000010405 anode material Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- OJIJEKBXJYRIBZ-UHFFFAOYSA-N cadmium nickel Chemical compound [Ni].[Cd] OJIJEKBXJYRIBZ-UHFFFAOYSA-N 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000010406 cathode material Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000002001 electrolyte material Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000003446 memory effect Effects 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- -1 separator Substances 0.000 description 1
Images
Classifications
-
- 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
Landscapes
- Battery Mounting, Suspending (AREA)
- Connection Of Batteries Or Terminals (AREA)
Abstract
The utility model relates to a battery conducting frame, including conducting strip, a plurality of first protrusion welding parts and fixed unit. The first protruding welding part is arranged on the first surface of the conducting plate, and the conducting plate is connected with the battery core through the first protruding welding part. The fixing unit comprises a fixing part and a pressing part, wherein the fixing part is used for connecting the battery core, and the pressing part is used for pressing the second surface of the conducting plate so as to improve the connection strength between the conducting plate and the battery core and prevent the conducting plate from being separated from the battery core.
Description
Technical Field
The utility model relates to a battery leads electrical stand for connect the battery core, can improve and the battery core between joint strength, and avoid the battery to lead electrical stand and battery core separation.
Background
The secondary battery mainly includes nickel-hydrogen battery, nickel-cadmium battery, lithium ion battery, lithium polymer battery, the lithium battery has the advantages of high energy density, high operating voltage, large range of using temperature, no memory effect, long service life, capability of being charged and discharged for many times, etc., and is widely used in portable electronic products such as mobile phones, notebook computers, digital cameras, etc., and more expanded in the automobile field in recent years.
The Cell structure mainly includes a positive electrode material, an electrolyte, a negative electrode material, an isolation layer and a case, wherein the positive electrode material and the negative electrode material are separated by the isolation film to avoid short circuit, and the electrolyte is disposed in the porous isolation film and works as ionic charge conduction. The casing is used to cover the above-mentioned cathode material, separator, electrolyte and anode material, and generally, the casing is usually made of metal material.
When the battery pack is used, a plurality of battery cells are connected in series and/or in parallel through the battery conducting frame to form the battery pack, so that the battery pack can output the voltage required by a product. Generally, the battery conductive frame and the battery core are connected by electric welding, and during the electric welding, the temperature of the battery conductive frame and the battery core needs to be increased, and the battery conductive frame is pressed against the positive electrode/negative electrode shell of the battery core to complete the connection between the battery conductive frame and the battery core. However, in the process of welding or using the battery pack, the battery conductive frame and the battery core may be loosened due to the external force, and the battery pack may not be used normally.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a battery conducting frame mainly includes conducting strip and fixed unit, and wherein the conducting strip welds on the battery core through an at least first protruding welding part to be used for establishing ties or a plurality of battery cores of connecting in parallel. The fixing unit can also be connected with the battery core in a welding mode and is contacted with part or all of the conducting strips in a pressing mode so as to strengthen the connection strength between the conducting strips and the battery core. Through electrically conductive setting of frame of battery, can prevent effectively that the in-process of preparation or use group battery from taking place to lead to the electrically conductive situation that puts up and battery core pine takes off because of the effect of external force to can effectively improve the reliability of product.
In order to achieve the above object, the utility model provides a battery conducting rack, include: the conductive sheet comprises a first surface and a second surface, wherein the first surface and the second surface are two opposite surfaces; a plurality of first projection welding parts arranged on the first surface of the conducting plate and used for connecting a plurality of battery cells; and the fixing unit comprises a fixing part and at least one pressing part, wherein the fixing part is used for connecting the battery core, and the pressing part is used for pressing the conducting sheet.
Preferably, the press fit portion of the fixing unit overlaps the first projection welding portion of the conductive sheet.
Furthermore, the battery conductive frame further comprises at least one second protruding welding part located on the pressing part of the fixing unit, and the pressing part of the fixing unit is connected with the second surface of the conductive sheet through the second protruding welding part.
Furthermore, the battery conductive frame also comprises at least one third projection welding part positioned on the fixing part of the fixing unit, and the fixing part of the fixing unit is connected with the battery core through the third projection welding part.
Preferably, the fixing unit includes two fixing portions respectively connected to different battery cells.
Preferably, the fixing unit is provided in plurality and is connected with the plurality of battery cells.
Preferably, the fixing unit includes two pressing parts, and connects the same battery cell through the two pressing parts.
In at least one embodiment of the present invention, the conductive sheet includes a plurality of branches, and the first protruding solder portion is disposed on the branches.
Preferably, the fixing unit has a conductivity smaller than that of the conductive sheet.
Preferably, the thickness of the fixing unit is smaller than that of the conductive sheet.
Drawings
Fig. 1 is a schematic cross-sectional view of an embodiment of a battery conductive frame and a battery core of the present invention.
Fig. 2 is a top perspective view of the battery conductive frame and the battery core according to the above embodiment of the present invention.
Fig. 3 is a schematic cross-sectional view of another embodiment of the battery conductive frame and the battery core of the present invention.
Fig. 4 is a top perspective view of the battery conductive frame and the battery core according to the above embodiment of the present invention.
Fig. 5 is a schematic cross-sectional view of another embodiment of the battery conductive frame and the battery cell of the present invention.
Fig. 6 is a top perspective view of the battery conductive frame and the battery core according to the above embodiment of the present invention.
Description of the reference numerals: 10-a battery conducting rack; 11-a conductive sheet; 111-a first surface; 112-interval; 113-a second surface; 115-; a first projection welding part; 117-branch; 12-a battery cell; 121-a housing; 13-a stationary unit; 131-a fixed part; 132-a connecting part; 133-a press fit; 135-second projection weld; 137-third projection weld.
Detailed Description
Please refer to fig. 1 and fig. 2, which are a schematic cross-sectional view and a top perspective view of an embodiment of a battery conductive frame and a battery core according to the present invention. The battery conductive frame 10 is used for connecting a plurality of battery cells 12, and includes a conductive sheet 11 and at least one fixing unit 13, wherein the conductive sheet 11 is used for connecting the plurality of battery cells 12 in series or in parallel.
Generally, the conductive sheet 11 is usually made of a metal material with low resistance and high conductivity, such as copper, so as to reduce the energy loss caused by charging and discharging the battery cell 12 through the conductive sheet 11.
In practical applications, the conductive sheet 11 and the case 121 of the battery cell 12 are connected by welding, for example, resistance welding, which is a process technique for joining dissimilar metals by heating or pressing. When the conductive sheet 11 has a high conductivity, it may be disadvantageous to resistance-weld the conductive sheet 11 and the battery cell 12.
The conductive sheet 11 includes a first surface 111 and a second surface 113, wherein the first surface 111 and the second surface 113 are two surfaces facing each other on the conductive sheet 11, for example, the first surface 111 is a lower surface, and the second surface 113 is an upper surface. The first surface 111 of the conductive sheet 11 is provided with a plurality of first protruding solder portions 115, wherein the first protruding solder portions 115 may be bumps protruding from the first surface 111 of the conductive sheet 11 and are used for connecting the battery cells 12.
In an embodiment of the present invention, the first protruding solder portion 115 may be formed on the first surface 111 of the conductive plate 11 by stamping, and the second surface 113 of the conductive plate 11 may form at least one concave portion, wherein the position of the concave portion corresponds to the position of the first protruding solder portion 115.
Of course, the formation of the first projection welding portion 15 on the conductive plate 11 by punch forming is only an embodiment of the present invention, and is not a limitation of the claims of the present invention. In practical applications, the conductive sheet 11 may be manufactured in other manners, such as by casting the conductive sheet 11 and the first protruding solder 115, wherein the second surface 113 of the conductive sheet 11 will not have the concave portion.
In the welding process, the first protruding welding portion 115 of the conductive sheet 11 may be connected to the case 121 of the battery cell 12, wherein the case 121 is made of a metal material, such as a positive electrode or a negative electrode connected to the case 121. Then, the welding current is supplied to the conductive sheets 11, the first projection welding parts 115, and the case 121 of the battery cell 12, so that the temperature of the first projection welding parts 115 of the conductive sheets 11 and the case 121 in contact therewith is increased.
When the temperatures of the conductive sheet 11, the first projection welding part 115 and the case 121 of the battery cell 12 reach a certain value, they are melted to form a molten pool. Then, the conductive sheet 11 and the first protruding solder part 115 apply pressure to the case 121 of the battery cell 12, so that the first protruding solder part 115 sinks into the case 121 of the battery cell 12, and after the temperatures of the conductive sheet 11, the first protruding solder part 115 and the case 121 of the battery cell 12 decrease, the connection between the conductive sheet 11 and the battery cell 12 is completed.
Although the connection between the conductive sheet 11 and the battery cell 12 can be completed in the above manner, since the conductive sheet 11 and the battery cell 12 are connected only by the contact points of the first protruding weld portions 115 and the battery cell 12, the connection between the conductive sheet 11 and the battery cell 12 is not firm, and the conductive sheet 11 may be separated from the battery cell 12 during the subsequent manufacturing or using process.
In practical applications, the conductive sheet 11 is usually connected to a plurality of battery cells 12 in sequence, for example, after one end of the conductive sheet 11 is connected to the battery cell 12 on the left side of fig. 1, the other end of the conductive sheet 11 and the battery cell 12 on the right side are connected by welding.
As described above in the welding sequence of the conductive sheet 11 and the plurality of battery cells 12, the conductive sheet 11 generally applies pressure to the battery cells 12 during the process of connecting the battery cells 12 on the right side. Although the pressure exerted by the conductive sheet 11 on the battery cell 12 is generally not too great, the connection between the conductive sheet 11 and the battery cell 12 is only at the first projection weld 115 and the point of contact thereof. In addition, the conductive sheet 11 is connected to the two battery cells 12 at a certain distance, so that the pressure applied by the conductive sheet 11 to the battery cell 12 on the right side generates a moment at the first protruding solder 115 connecting the conductive sheet 11 and the battery cell 12 on the left side, and may cause the conductive sheet 11 to be separated from the battery cell 12 on the left side.
In order to avoid the above situation, the present invention further provides a fixing unit 13 on the conductive plate 11 and the battery cell 12. The fixing unit 13 includes a fixing portion 131 and a pressing portion 133, wherein the fixing portion 131 is used for connecting the housing 121 of the battery cell 12, and the pressing portion 133 is used for contacting and pressing the conductive sheet 11, so as to increase the connection strength between the conductive sheet 11 and the battery cell 12.
In an embodiment of the present invention, the fixing unit 13 can be a metal plate, wherein the fixing portion 131 and the pressing portion 133 have different heights, for example, the fixing portion 131 is connected to the pressing portion 133 through a connecting portion 132, wherein the fixing portion 131 is approximately parallel to the pressing portion 133, and an included angle greater than 90 degrees is formed between the connecting portion 132 and the fixing portion 131 and between the connecting portion 132 and the pressing portion 133, which is described as 90 degrees in the drawings, so that the cross section of the fixing unit 13 is stepped.
In addition, in the drawings of the present invention, the connecting portion 132 of the fixing unit 13 is attached to the side surface of the conductive plate 11, but in different embodiments, a gap may be formed between the connecting portion 132 of the fixing unit 13 and the conductive plate 11.
In practical applications, after the conductive sheet 11 is connected to one of the battery cells 12, the fixing unit 13 may be disposed on the battery cell 12 connected to the conductive sheet 11 to strengthen the connection relationship between the conductive sheet 11 and the battery cell 12. And then the conducting plate 11 is connected with another battery cell 12 or other battery cells 12, so that the conducting plate 11 is prevented from being separated from the battery cell 12 which is connected in the process of connecting other battery cells 12 by the conducting plate 11.
In the embodiment of the present invention, the number of the fixing units 13 and the number of the battery cells 12 are all plural, wherein each fixing unit 13 is connected to each battery cell 12.
The fixing portion 131 of the fixing unit 13 may be connected to the case 121 of the battery cell 12 by welding, and the pressing portion 133 of the fixing unit 13 may also be connected to the conductive sheet 11 by welding, such as resistance welding. After the welding between the first surface 111 of the conductive sheet 11 and the case 121 of the battery cell 12 is completed by the welding apparatus, the fixing unit 13 can be welded to the case 121 of the battery cell 12 and the second surface 113 of the conductive sheet 11 by the same welding apparatus.
The fixing unit 13 is mainly used to fix the conductive sheet 11 to the battery cell 12, and is not used to transmit current. Therefore, the fixing unit 13 may be made of a metal material with low conductivity to facilitate the connection between the fixing unit 13 and the battery cell 12 and the conductive sheet 11 by welding, for example, the fixing unit 13 may be a nickel sheet. Specifically, the conductivity of the fixing unit 13 may be smaller than that of the conductive sheet 11, and the thickness of the fixing unit 13 may also be smaller than that of the conductive sheet 11.
In an embodiment of the present invention, at least one second protruding solder portion 135 may be disposed on the surface of the pressing portion 133 of the fixing unit 13, wherein the pressing portion 133 is connected to the second surface 113 of the conducting strip 11 through the second protruding solder portion 135. The second projection welding part 135 is arranged to facilitate the connection of the pressing part 133 of the fixing unit 13 and the second surface 113 of the conductive sheet 11 by welding.
In addition, at least one third projection welding part 137 may be disposed on the surface of the fixing part 131 of the fixing unit 13, wherein the fixing part 131 is connected to the battery cell 12 through the third projection welding part 137. The fixing unit 13 includes the second protruding welding portion 135 and the third protruding welding portion 137 only as an embodiment of the present invention, which is not a limitation of the claims of the present invention.
In addition, the pressing part 133 of the fixing unit 13 may cover the conductive sheet 11 above the first protruding solder part 115, such that the pressing part 133 overlaps the first protruding solder part 115, which is beneficial to further strengthen the connection between the conductive sheet 11 and the battery cell 12 through the fixing unit 13.
In the above embodiment of the present invention, the fixing unit 13 is made of metal and is connected to the battery cell 12 and the conducting strip 11 by welding. In various embodiments, the fixing unit 13 may also be a non-metal, for example, the fixing unit 13 may be plastic, and may be connected to the battery cell 12 and/or the conductive sheet 11 by gluing or ultrasonic welding. The fixing unit 13 is made of metal, which is only an embodiment of the present invention and is not a limitation of the claims of the present invention.
In addition, when the fixing unit 13 connects the battery cells 12 and the conductive sheets 11 by gluing or ultrasonic welding, the second projection welding part 135 and the third projection welding part 137 may not be provided on the fixing unit 13.
In the embodiment of fig. 2, the conductive sheet 11 is approximately fork-shaped in appearance, and a plurality of branches 117 are formed at the end of the conductive sheet 11, wherein a space 112 is formed between adjacent branches 117, for example, a plurality of branches 117 are formed at both ends of the conductive sheet 11. The first projection welding parts 115 are respectively arranged on the branches 117 of the conducting plate 11, wherein a plurality of branches 117 at the same end of the conducting plate 11 are used for connecting the same battery core 12.
As shown in fig. 3 and 4, the main difference between the embodiment of the present invention and fig. 1 and 2 is that in the embodiment of fig. 1 and 2, each battery cell 12 is provided with a fixing unit 13, wherein the number of the fixing units 13 and the number of the battery cells 12 are the same, and the fixing units 13 strengthen the connection relationship between the end portions of the conductive sheets 11 and the battery cells 12.
In the embodiment of fig. 3 and 4, a plurality of battery cells 12 share the same fixing unit 13. In the embodiment of the present invention, the fixing unit 13 includes two fixing portions 131 and a pressing portion 133, wherein the two fixing portions 131 of the fixing unit 13 are respectively connected to different battery cells 12, and the pressing portion 133 spans two ends of the conductive sheet 11. The pressing part 133 is configured to contact and cover part or all of the second surface 113 of the conductive sheet 11, and press the conductive sheet 11 toward the battery cell 12.
Specifically, the fixing unit 13 is disposed along the conductive sheet 11, wherein the two fixing portions 131 of the fixing unit 13 are respectively welded to two different battery cells 12, and the pressing portion 133 of the fixing unit 13 may not be welded to the second surface 113 of the conductive sheet 11. In various embodiments, the pressing portion 133 of the fixing unit 13 may also be welded to the second surface 113 of the conductive sheet 11, so as to further enhance the fixing effect of the fixing unit 13.
As shown in fig. 5 and fig. 6, in the embodiment of the present invention, each battery cell 12 is provided with a fixing unit 13, wherein the number of the fixing units 13 and the number of the battery cells 12 are the same. The fixing unit 13 of the present embodiment includes two fixing portions 131 and a pressing portion 133, wherein the two fixing portions 131 of the fixing unit 13 are connected to the same battery cell 12, and the pressing portion 133 contacts and covers a portion of the second surface 113 of the conductive sheet 11 and presses the conductive sheet 11 toward the battery cell 12.
Since the fixing portions 131 at both ends of the fixing unit 13 are welded to the housing 121 of the same battery cell 12, the pressing portions 133 of the fixing unit 13 do not need to be welded to the second surface 113 of the conductive sheet 11. In various embodiments, the pressing portion 133 of the fixing unit 13 may also be welded to the second surface 113 of the conductive sheet 11, so as to further enhance the fixing effect of the fixing unit 13.
The above description is only an example of the present invention and should not be taken as limiting the scope of the invention, which is intended to be covered by the appended claims.
Claims (10)
1. A battery conductive frame, comprising:
the conductive sheet comprises a first surface and a second surface, wherein the first surface and the second surface are two opposite surfaces;
a plurality of first projection welding parts arranged on the first surface of the conducting plate and used for connecting a plurality of battery cells; and
the fixing unit comprises a fixing part and at least one pressing part, wherein the fixing part is used for connecting the battery cores, and the pressing part is used for pressing the conducting strip.
2. The battery conducting frame according to claim 1, wherein the press-fit portion of the fixing unit overlaps the plurality of first projection welding portions of the conductive sheet.
3. The battery conducting frame according to claim 1, further comprising at least one second projection welding part located at the pressing part of the fixing unit, wherein the pressing part of the fixing unit is connected to the second surface of the conducting strip through the at least one second projection welding part.
4. The battery holder as set forth in claim 3, further comprising at least one third projection welding part at the fixing part of the fixing unit, and the fixing part of the fixing unit is connected to the plurality of battery cells by the at least one third projection welding part.
5. The battery holder as claimed in claim 1, wherein the fixing unit includes two fixing portions respectively connecting different ones of the plurality of battery cells.
6. The battery conducting frame according to claim 1, wherein the fixing unit is provided in plurality and respectively connected to the plurality of battery cells.
7. The battery conducting frame as claimed in claim 6, wherein the fixing unit comprises two pressing parts, and the same battery cell is connected through the two pressing parts.
8. The battery conducting frame according to claim 1, wherein the conductive sheet includes a plurality of branches, and the plurality of first projection welding parts are provided on the plurality of branches.
9. The battery conductive rack according to claim 1, wherein the fixing unit has a conductivity less than that of the conductive sheet.
10. The battery conducting frame according to claim 1, wherein the thickness of the fixing unit is smaller than that of the conductive sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222337294.XU CN218334199U (en) | 2022-09-02 | 2022-09-02 | Battery conductive frame |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222337294.XU CN218334199U (en) | 2022-09-02 | 2022-09-02 | Battery conductive frame |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218334199U true CN218334199U (en) | 2023-01-17 |
Family
ID=84833520
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222337294.XU Active CN218334199U (en) | 2022-09-02 | 2022-09-02 | Battery conductive frame |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218334199U (en) |
-
2022
- 2022-09-02 CN CN202222337294.XU patent/CN218334199U/en active Active
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