Lithium battery with high overcurrent capability
By increasing the number of electrodes in lithium batteries and improving the electrode structure, the problems of electrodes heating and solder melting under high currents are solved, and the overcurrent capability and safety of the battery are enhanced.
Patent Information
- Application Number
- CN202422672027.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-04
- Publication Date
- 2025-07-11
- Estimated Expiration
- 2034-11-04
AI Technical Summary
When existing lithium batteries generate high current, the extreme ears are unable to withstand high currents, causing heat generation, solder melting, which may cause wires to fall off, affecting battery safety and performance.
A lithium battery with high overcurrent capability is designed. By increasing the number of electrodes and improving the electrode structure, the insulating frame is used to separate the electrode plate and the electrode ear, which enhances the bearing capacity of the electrode ear, and increases the heat dissipation area through the fins and the connecting plate to prevent circuit short circuit.
It enhances the overcurrent capability of lithium batteries, improves the current carrying capacity of the pole ears, reduces heat generation and speeds up the heat loss speed, and improves the safety and performance of the battery.
Smart Images
Figure CN223092917U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of lithium batteries, in particular to a lithium battery with high overcurrent capacity. Background Art
[0002] The overcurrent capacity of a lithium battery refers to the maximum current value that the battery can withstand in a short period of time. This parameter is crucial for the safety and performance of the battery, because excessive current may cause the battery to overheat, capacity loss, shortened lifespan, and even safety accidents.
[0003] When the existing lithium battery generates high current, the tabs of the lithium battery are often difficult to withstand the high current and thus heat up. At the same time, the heated tabs may also cause the solder to melt and lead to the detachment of the wire.
[0004] Therefore, in view of the above problems, a lithium battery with high overcurrent capacity can be designed to improve the tabs of the lithium battery. Summary of the Utility Model
[0005] In order to overcome the problem that when most lithium batteries generate high current, the tabs of the lithium battery are often difficult to withstand the high current and thus heat up, and at the same time, the heated tabs may also cause the solder to melt and lead to the detachment of the wire.
[0006] The technical solution of the utility model is: a lithium battery with high overcurrent capacity, including a lithium battery cell, an insulating frame, a first pole piece, a second pole piece, a first tab, a second tab, a first wire, and a second wire; an insulating frame is arranged outside the lithium battery cell, a first pole piece is arranged above the lithium battery cell, the first pole piece is electrically connected to one pole of the lithium battery cell, a second pole piece is arranged at the bottom of the lithium battery cell, the second pole piece is electrically connected to the other pole of the lithium battery cell, a first tab is arranged above the insulating frame, the first tab is electrically connected to the first pole piece, a first wire is arranged on one side of the first tab, a second tab is arranged above the insulating frame, the second tab is electrically connected to the second pole piece, and a second wire is arranged on one side of the second tab.
[0007] Preferably, by setting the first pole piece to connect one pole of the lithium battery cell to electrically connect the first tab to the lithium battery cell for facilitating circuit conduction, setting the second pole piece to connect the other pole of the lithium battery cell to electrically connect the second tab to the lithium battery cell for facilitating circuit conduction, and the insulating frame installs and fixes the first pole piece, the second pole piece, the first tab, and the second tab to the lithium battery cell and at the same time separates and insulates them to prevent circuit short - circuit. When the circuit conducts, since there are two sets of the first tab and the second tab respectively, the volume of the conductor is increased, so that the tabs of the positive and negative electrodes can withstand higher current, thereby enhancing the overcurrent capacity of the battery.
[0008] Preferably, a wiring board is provided above the first tab. There is a certain gap between the wiring board and the first tab. Fins are provided above the wiring board, and multiple groups of fins are provided.
[0009] Preferably, a first power connection board is provided at the bottom of the first tab. There is a certain gap between the first power connection board and the first tab. A connection board is provided on one side of the first tab.
[0010] Preferably, a first receiving groove is formed above the insulating frame. The width of the first receiving groove is the same as the width of the first tab.
[0011] Preferably, a first placement groove is provided at the bottom of the first receiving groove. A first power connection groove is provided at the bottom of the first receiving groove. The first power connection groove is connected and communicated with the first placement groove. The first power connection board penetrates through the first power connection groove and extends into the first placement groove.
[0012] Preferably, a second receiving groove is formed above the insulating frame. A second placement groove is formed at the bottom of the insulating frame. A second power connection groove is formed on one side of the second placement groove. The second power connection groove is connected and communicated with the second placement groove.
[0013] Preferably, an extension strip is provided at the bottom of the second tab. A second power connection board is provided at the bottom of the extension strip. The second power connection board penetrates through the second power connection groove and extends into the second placement groove.
[0014] Advantages of the present utility model:
[0015] 1. The present utility model increases the number of tabs. When the circuit is conducting, since two groups of first tabs and second tabs are provided respectively, the volume of the battery single-pole conductor is increased, enabling the tabs of the positive and negative electrodes to withstand higher currents. At the same time, the surface area of the battery single-pole conductor is also increased, accelerating the heat dissipation rate, thereby enhancing the over-current capacity of the battery. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 Shown is a three-dimensional structural schematic diagram of a lithium battery with high over-current capacity of the present utility model;
[0017] Figure 2 Shown is a three-dimensional structural schematic diagram of a lithium battery cell of a lithium battery with high over-current capacity of the present utility model;
[0018] Figure 3 Shown is a three-dimensional structural schematic diagram of a first tab of a lithium battery with high over-current capacity of the present utility model;
[0019] Figure 4 Shown is a three-dimensional structural schematic diagram of a second tab of a lithium battery with high over-current capacity of the present utility model.
[0020] Description of reference numerals: 1. Lithium battery cell; 2. Insulating frame; 201. First receiving groove; 202. First power connection groove; 203. Second receiving groove; 204. First placement groove; 205. Second placement groove; 206. Second power connection groove; 3. First pole piece; 4. Second pole piece; 5. First pole tab; 501. Wiring board; 502. Fin; 503. First power connection board; 504. Connecting plate; 6. Second pole tab; 601. Extension bar; 602. Second power connection board; 7. First wire; 8. Second wire. Detailed implementation manners
[0021] The present utility model will be further described below in conjunction with the accompanying drawings and embodiments.
[0022] Please refer to Figures 1 - 4 , the present utility model provides an embodiment: a lithium battery with high overcurrent capacity, including a lithium battery cell 1, an insulating frame 2, a first pole piece 3, a second pole piece 4, a first pole tab 5, a second pole tab 6, a first wire 7 and a second wire 8; an insulating frame 2 is arranged outside the lithium battery cell 1, a first pole piece 3 is arranged above the lithium battery cell 1, the first pole piece 3 is electrically connected to one pole of the lithium battery cell 1, a second pole piece 4 is arranged at the bottom of the lithium battery cell 1, the second pole piece 4 is electrically connected to the other pole of the lithium battery cell 1, a first pole tab 5 is arranged above the insulating frame 2, the first pole tab 5 is electrically connected to the first pole piece 3, a first wire 7 is arranged on one side of the first pole tab 5, a second pole tab 6 is arranged above the insulating frame 2, the second pole tab 6 is electrically connected to the second pole piece 4, and a second wire 8 is arranged on one side of the second pole tab 6.
[0023] Please refer to Figure 3, in this embodiment, a wiring board 501 is provided above the first tab 5. There is a certain gap between the wiring board 501 and the first tab 5. Fins 502 are provided above the wiring board 501, and multiple groups of fins 502 are provided. A first power connection board 503 is provided at the bottom of the first tab 5. There is a certain gap between the first power connection board 503 and the first tab 5. A connecting plate 504 is provided on one side of the first tab 5. A first receiving groove 201 is opened above the insulating frame 2. The width of the first receiving groove 201 is the same as the width of the first tab 5. A first placement groove 204 is provided at the bottom of the first receiving groove 201. A first power connection groove 202 is provided at the bottom of the first receiving groove 201. The first power connection groove 202 is connected and communicated with the first placement groove 204. The first power connection board 503 passes through the first power connection groove 202 and extends into the first placement groove 204; the wiring board 501 is used to increase the contact area between the wire and the tab and clamp the wire at the same time, preventing the wire from falling off due to the melting of the solder when heated. The fins 502 can increase the contact area between the tab and the air or the heat-conducting glue, so that the heat can be dissipated faster. The first power connection board 503 is used to contact the first pole piece 3. The connecting plate 504 is used to connect and fix the first tab 5, the wiring board 501 and the first power connection board 503. The first placement groove 204 is used to place the first pole piece 3. The first power connection groove 202 facilitates the contact between the first power connection board 503 and the first pole piece 3.
[0024] Please refer to Figure 4 , in this embodiment, a second receiving groove 203 is opened above the insulating frame 2. A second placement groove 205 is opened at the bottom of the insulating frame 2. A second power connection groove 206 is opened on one side of the second placement groove 205. The second power connection groove 206 is connected and communicated with the second placement groove 205. An extension strip 601 is provided at the bottom of the second tab 6. A second power connection board 602 is provided at the bottom of the extension strip 601. The second power connection board 602 passes through the second power connection groove 206 and extends into the second placement groove 205; the second receiving groove 203 is used to place the second pole piece 4. The second power connection groove 206 facilitates the contact between the second power connection board 602 and the second pole piece 4. The extension strip 601 connects the second power connection board 602 and the second tab 6.
[0025] When the battery is connected, the positive electrode of the lithium battery cell 1, the first pole piece 3, the first power connection board 503 and the first tab 5 form the positive electrode of the battery. The negative electrode of the lithium battery cell 1, the second pole piece 4, the second power connection board 602, the extension strip 601 and the second tab 6 form the negative electrode of the battery. After inserting the first wire 7 into the gap between the wiring board 501 and the first tab 5 and adding molten solder, the connection of the positive electrode is completed. The second wire 8 can be connected to the second tab 6 in the same operation mode to complete the connection of the negative electrode.
[0026] Through the above steps, by setting the first pole piece 3 to connect to one pole of the lithium battery cell 1, the first pole ear 5 is electrically connected to the lithium battery cell 1 to facilitate circuit conduction. By setting the second pole piece 4 to connect to the other pole of the lithium battery cell 1, the second pole ear 6 is electrically connected to the lithium battery cell 1 to facilitate circuit conduction. The insulating frame 2 installs and fixes the first pole piece 3, the second pole piece 4, the first pole ear 5 and the second pole ear 6 to the lithium battery cell 1 and at the same time separates and insulates them to prevent short circuits. When the circuit is conducting, since there are two sets of the first pole ear 5 and the second pole ear 6 respectively, the volume of the conductor is increased, so that the pole ears of the positive and negative electrodes can withstand higher currents, thereby enhancing the over-current capacity of the battery.
[0027] The embodiments of the present invention have been described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the gist of the present invention.
Claims
1. A lithium battery with high overcurrent capacity, comprising a lithium battery cell (1); characterized in that: It also includes an insulating frame (2), a first pole piece (3), a second pole piece (4), a first pole tab (5), a second pole tab (6), a first wire (7) and a second wire (8); an insulating frame (2) is arranged outside the lithium battery cell (1), a first pole piece (3) is arranged above the lithium battery cell (1), the first pole piece (3) is electrically connected to one pole of the lithium battery cell (1), a second pole piece (4) is arranged at the bottom of the lithium battery cell (1), the second pole piece (4) is electrically connected to the other pole of the lithium battery cell (1), a first pole tab (5) is arranged above the insulating frame (2), there are two groups of the first pole tabs (5), the first pole tabs (5) are electrically connected to the first pole piece (3), a first wire (7) is arranged on one side of the first pole tab (5), a second pole tab (6) is arranged above the insulating frame (2), there are two groups of the second pole tabs (6), the second pole tabs (6) are electrically connected to the second pole piece (4), and a second wire (8) is arranged on one side of the second pole tab (6).
2. The high-overcurrent-capacity lithium battery according to claim 1, wherein: A wiring board (501) is arranged above the first pole tab (5), there is a certain gap between the wiring board (501) and the first pole tab (5), and a plurality of fin pieces (502) are arranged above the wiring board (501).
3. The lithium battery with high overcurrent capacity according to claim 1, wherein: A first power connection board (503) is arranged at the bottom of the first pole tab (5), there is a certain gap between the first power connection board (503) and the first pole tab (5), and a connection board (504) is arranged on one side of the first pole tab (5).
4. The high-overcurrent-capability lithium battery according to claim 1, wherein: A first receiving groove (201) is formed above the insulating frame (2), and the width of the first receiving groove (201) is the same as the width of the first pole tab (5).
5. The lithium battery with high over-current capacity according to claim 4, characterized in that: A first placement groove (204) is arranged at the bottom of the first receiving groove (201), a first power connection groove (202) is arranged at the bottom of the first receiving groove (201), the first power connection groove (202) is connected and communicated with the first placement groove (204), and the first power connection board (503) penetrates through the first power connection groove (202) and extends into the first placement groove (204).
6. The high-overcurrent-capacity lithium battery according to claim 1, wherein: A second receiving groove (203) is formed above the insulating frame (2), a second placement groove (205) is formed at the bottom of the insulating frame (2), a second power connection groove (206) is formed on one side of the second placement groove (205), and the second power connection groove (206) is connected and communicated with the second placement groove (205).
7. The high over-current capacity lithium battery according to claim 6, characterized in that: An extension strip (601) is arranged at the bottom of the second pole tab (6), a second power connection board (602) is arranged at the bottom of the extension strip (601), and the second power connection board (602) penetrates through the second power connection groove (206) and extends into the second placement groove (205).