CN218101492U - Cylindrical battery series connection device and cylindrical battery - Google Patents
Cylindrical battery series connection device and cylindrical battery Download PDFInfo
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- CN218101492U CN218101492U CN202221173972.7U CN202221173972U CN218101492U CN 218101492 U CN218101492 U CN 218101492U CN 202221173972 U CN202221173972 U CN 202221173972U CN 218101492 U CN218101492 U CN 218101492U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The utility model discloses a cylindrical battery series connection device and a cylindrical battery, the cylindrical battery series connection device comprises a first elastic support, the first elastic support forms a first groove body, the first elastic support is suitable for clamping and inserting the negative end of the battery cell of the first groove body, the inner wall of the first groove body is provided with a first conductor, and the first conductor is connected with the negative end of the battery cell; the second elastic support forms a second groove body, the second elastic support is suitable for clamping a cap end of the battery cell inserted into the second groove body, a second conductor is arranged in the second groove body and connected with the cap of the battery cell, and the first conductor is electrically connected with the second conductor. Therefore, when a plurality of battery cores are connected in series, the battery cores are not required to be fixed by welding, the battery cores can be prevented from being damaged, the secondary utilization rate of the battery cores is improved, the battery assembly process is simplified, and the battery assembly cost is reduced.
Description
Technical Field
The utility model belongs to the technical field of the battery technique and specifically relates to a cylindrical battery series connection connecting device and cylindrical battery are related to.
Background
The cylindrical lithium ion battery is a power supply with wide application, and generally adopts a plurality of single batteries to carry out series-parallel connection combination according to the requirements of voltage and capacity required by a load, the voltage is improved by series connection, and the capacity is improved by parallel connection. In practical applications, a single cylindrical lithium ion battery is assembled together by using a battery clamp to form a large-capacity battery. The battery clamp comprises a clamp body made of insulating materials, mounting holes for arranging cylindrical batteries are formed in the clamp body, metal conducting strips are arranged in the mounting holes, and the metal conducting strips are connected with each other through metal parallel networks. During assembly, the cap end of the cylindrical battery is inserted into the battery mounting hole and is clamped and contacted with the metal conducting strip, in order to enhance the connection reliability between the cap end and the metal conducting strip, the metal conducting strip and the cap end are welded and fixed by a welding method, so that a small battery pack is formed, and then a plurality of battery packs are assembled in series and parallel to form the large-capacity battery. The method for assembling the battery by adopting the welding mode has the problems of complex assembly process, easy damage to the single battery, low secondary utilization rate of the single battery, easy thermal runaway and the like.
Therefore, the current cylindrical battery series connection device still needs to be further improved.
SUMMERY OF THE UTILITY MODEL
The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. For this reason, an object of the present invention is to provide a cylindrical battery series connection device and a cylindrical battery. When the cylindrical battery series connection connecting device is used for series connection of the battery cores, series connection between the battery cores can be achieved without welding, the battery cores can be prevented from being damaged, the secondary utilization rate of the battery cores is improved, the whole assembly process is simpler, and therefore the cost of battery assembly is reduced.
In one aspect of the present invention, a cylindrical battery series connection device is provided, which includes a first elastic support, the first elastic support forms a first groove, the first elastic support is suitable for clamping a negative end of an electrical core inserted into the first groove, a first conductor is disposed on an inner wall of the first groove, and the first conductor is connected to the negative end of the electrical core; the second elastic support forms a second groove body, the second elastic support is suitable for clamping a cap end of the battery cell inserted into the second groove body, a second conductor is arranged in the second groove body and connected with the cap of the battery cell, and the first conductor is electrically connected with the second conductor. Therefore, when the battery is used for serially connecting cylindrical battery cells, the first elastic support and the second elastic support are clamped and fixed by the elasticity of the battery cells, the first elastic support and the second elastic support which are alternately arranged among the battery cells can realize the serial connection of the battery cells, the whole process is not required to fix the battery cells by welding, the battery cells can be prevented from being damaged, the secondary utilization rate of the battery cells is improved, the battery assembly process is simplified, and the battery assembly cost is reduced.
According to some embodiments of the present invention, the first elastic support comprises a first bottom plate and a first side wall, the first bottom plate is provided with a first opening, and the first bottom plate and the first side wall are connected to form the first groove body; the second elastic support comprises a second bottom plate and a second side wall, the second bottom plate is provided with a second opening, and the second bottom plate is connected with the second side wall to form a second groove body; the first and second bottom plates are circular in cross section.
According to some embodiments of the invention, the first conductor comprises a first portion and a second portion, the first portion being disposed on an inner wall of the first bottom plate and the first side wall; one end of the second part is arranged at the first opening and is connected with the first part, and the other end of the second part extends towards the direction far away from the first groove body; one end of the second conductor is arranged at the second opening, the other end of the second conductor extends towards the direction far away from the second groove body, and the second part is connected with the second conductor.
According to some embodiments of the invention, the first resilient support and the second resilient support are arranged vertically, one of the first bottom plate and the second bottom plate is provided with a connecting portion, the other of the first bottom plate and the second bottom plate is provided with a slot, the slot matches with the connecting portion.
According to some embodiments of the invention, the first opening part the thickness of second portion is less than the thickness of the rest of the positions of second portion.
According to some embodiments of the invention, the second opening part the thickness of second conductor is less than the thickness of the rest of the positions of second conductor.
According to some embodiments of the invention, the second portion further comprises a first thermistor, the first thermistor being disposed at the first opening; the second conductor further includes a second thermistor disposed at the second opening.
According to some embodiments of the invention, the first thermistor is bonded to the second part by a conductive adhesive; and/or the second thermistor is bonded with the second conductor through the conductive adhesive.
According to some embodiments of the present invention, the second elastic support further comprises a snap ring, the snap ring abuts against the rolling groove opening of the electric core.
In another aspect of the present invention, a cylindrical battery is provided, which comprises a cylindrical battery cell and the aforementioned cylindrical battery series connection device, and is plural in that the cylindrical battery cell passes through the cylindrical battery series connection device to realize series connection. Therefore, the cylindrical battery is simple in assembly process, the battery core is not easy to damage, the secondary utilization rate is high, the circuit protection device can reduce the risk of thermal runaway of the battery, and the safety of the battery is improved.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic structural view of a cylindrical battery series connection device according to an embodiment of the present invention;
fig. 2 is a sectional view of a partial structure of a cylindrical battery series connection apparatus according to an embodiment of the present invention;
fig. 3 is a sectional view of a partial structure of a cylindrical battery series-connection device according to another embodiment of the present invention;
fig. 4 is a sectional view of a partial structure of a cylindrical battery series-connection device according to another embodiment of the present invention;
fig. 5 is a sectional view of a partial structure of a cylindrical battery series-connection device according to another embodiment of the present invention;
fig. 6 is a plan view of a partial structure of a cylindrical battery series connection device according to an embodiment of the present invention;
fig. 7 is a bottom view of a partial structure of a cylindrical battery series connection apparatus according to an embodiment of the present invention;
fig. 8 is a plan view of a partial structure of a cylindrical battery series connection device according to an embodiment of the present invention;
fig. 9 is a bottom view of a partial structure of a cylindrical battery series connection apparatus according to an embodiment of the present invention;
fig. 10 is a schematic structural diagram of a cylindrical battery cell according to an embodiment of the present invention.
Reference numerals:
1000: a cylindrical battery series connection device; 1100: a first elastic support; 1110: a first base plate; 1120: a first side wall; 1111: a first opening; 1200: a first tank body; 1300: a first conductor; 1310: a first part; 1320: a second section; 1330: a first thermistor; 1400: a second elastic support; 1410: a second base plate; 1420: a second side wall; 1411: a second opening; 1430: a snap ring; 1500: a second tank body; 1600: a second conductor; 1610: a second thermistor; 1700: a connecting portion; 1800: a slot; 2000: an electric core; 2100: a negative terminal; 2200: a cap end; 2210: capping; 2220: a roller slot opening.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.
A cylindrical battery series connection apparatus according to an embodiment of the present invention is described below with reference to fig. 1 to 10.
In one aspect of the present invention, referring to fig. 1, a cylindrical battery series connection apparatus 1000 is provided, comprising a first resilient support 1100 and a second resilient support 1400.
The first elastic support 1100 forms a first groove 1200, the first elastic support 1100 is suitable for clamping a negative end 2100 of the battery cell 2000 inserted into the first groove 1200, a first conductor 1300 is arranged on the inner wall of the first groove 1200, and the first conductor 1300 is connected with the negative end 2100 of the battery cell 2000.
The second resilient bracket 1400 forms a second channel 1500, the second resilient bracket 1400 is adapted to clamp a cap end 2200 of the battery cell 2000 inserted into the second channel 1500, a second conductor 1600 is disposed in the second channel 1500, the second conductor 1600 is connected to the cap 2210 of the battery cell 2000, and the first conductor 1300 and the second conductor 1600 are electrically connected.
The utility model relates to a cylindrical battery series connection connecting device 1000, electric core 2000's negative pole end 2100 inserts first cell body 1200, and electric core 2000's block end 2200 inserts second cell body 1500, and first elastic support 1100 and second elastic support 1400 are all through self elastic clamping electricity core 2000. Meanwhile, the negative electrode end 2100 of the battery cell 2000 is connected to the first conductor 1300, the cap 2210 of the battery cell 2000 is connected to the second conductor 1600, and the connection of the first conductor 1300 to the second conductor 1600 can make the electrical paths among the plurality of battery cells 2000 conducted to form the battery. Therefore, series connection of the plurality of battery cores 2000 can be achieved without welding, damage to the battery cores 2000 in the assembling process of the battery cores 2000 is avoided, the secondary utilization rate of the battery cores 2000 is improved, the assembling process of the whole battery is simpler, and the assembling cost of the battery is reduced.
According to some embodiments of the present invention, referring to fig. 2 to 9, in order to better fix the battery cell 2000, the first elastic bracket 1100 includes a first bottom plate 1110 and a first side wall 1120, the first bottom plate 1110 is provided with a first opening 1111, and the first bottom plate 1110 and the first side wall 1120 are connected to form a first groove 1200; the second elastic bracket 1400 comprises a second bottom plate 1410 and a second side wall 1420, the second bottom plate 1410 is provided with a second opening 1411, and the second bottom plate 1410 and the second side wall 1420 are connected to form a second slot 1500; the first and second bottom plates 1110 and 1410 are circular in cross-section. Therefore, the circular first and second slots 1200 and 1500 can better fix the cylindrical battery cell 2000, and after the negative end 2100 of the battery cell 2000 is inserted into the first slot 1200, the first elastic bracket 1100 can tightly wrap the negative end 2100 of the battery cell 2000 by its own elasticity; similarly, after the cap end 2200 of the electric core 2000 is inserted into the second slot 1500, the second elastic bracket 1400 can also tightly wrap the cap end 2200 of the electric core 2000 through its own elastic force, when a plurality of electric cores 2000 are connected in series, the electric core 2000 and the cylindrical battery series connection device 1000 can be stably connected together, and a certain electric core 2000 is prevented from falling off to influence the performance of the whole battery. Note that the shape of the first opening 1111 is not limited, and for example, the first opening 1111 may be circular.
According to some embodiments of the present invention, the arrangement of the first conductor 1300 is not particularly limited, as long as it is ensured that when a plurality of electrical cores 2000 are connected in series, the circuit between two adjacent electrical cores 2000 is switched on. In particular, referring to fig. 1, 2 and 4, the first conductor 1300 may include a first portion 1310 and a second portion 1320, the first portion 1310 is disposed on the inner walls of the first bottom plate 1110 and the first side wall 1120, and after the negative end 2100 of the battery cell 2000 is inserted into the first slot 1200, the negative end 2100 is connected to the first portion 1310; one end of the second portion 1320 is disposed at the first opening 1111 and connected to the first portion 1310, and the other end of the second portion 1320 extends away from the first slot 1200; one end of the second conductor 1600 is disposed at the second opening 1411, the other end of the second conductor 1600 extends away from the second slot 1500, and the second portion 1320 is connected to the second conductor 1600. Therefore, when the first elastic support 1100 and the second elastic support 1400 are alternately arranged to connect a plurality of battery cells 2000 in series, the second portion 1320 is connected to the second conductor 1600, so as to ensure that the circuit conduction between the cap end 2200 and the negative end 2100 of the adjacent battery cells 2000 is ensured.
According to some embodiments of the present invention, the connection manner of the first and second elastic supports 1100 and 1400 is not particularly limited. For example, referring to fig. 1 to 5, when the first and second elastic supports 1100 and 1400 are vertically arranged, one of the first and second bottom plates 1110 and 1410 is provided with a connecting portion 1700, and the other of the first and second bottom plates 1110 and 1410 is provided with a slot 1800, and the slot 1800 matches the connecting portion 1700. Specifically, the connection portion 1700 may be disposed on the first base plate 1110, the connection portion 1700 may be disposed at an edge of the first base plate 1110, the slot 1800 is disposed at a corresponding position on the second base plate 1410, and when two battery cells 2000 are connected in series, the connection portion 1700 is inserted into the slot 1800 to fixedly connect the first elastic bracket 1100 and the second elastic bracket 1400. Therefore, the first elastic support 1100 and the second elastic support 1400 are connected in a plugging manner, so that the battery module is convenient to assemble and disassemble. According to some embodiments of the present invention, the connecting portion 1700 may be a hollow cylinder with two open ends, and the slot 1800 may be a circular groove, thereby better supporting and fixing the cylindrical battery cell.
According to some embodiments of the present invention, referring to fig. 2 and 3, in order to improve the safety of the battery, the thickness of the second portion 1320 at the first opening 1111 is smaller than the thickness of the rest of the second portion 1320. According to other embodiments of the present invention, the thickness of the second conductor 1600 at the second opening 1411 is less than the thickness of the rest of the second conductor 1600. Specifically, when the first opening 1111 is circular, the first base plate 1110 has a certain thickness, and the second portion 1320 is thinned within the thickness of the first base plate 1110, which is equivalent to the second portion 1320 sinking into the first opening 1111 to form a circular groove, at this time, the first portion 1310 and the second portion 1320 of the first conductor 1300 are continuous, and the second conductor 1600 is also continuous. When the temperature of the battery core 2000 rises due to thermal runaway, the thin first conductor 1300 and/or the thin second conductor 1600 are firstly fused, so that an electric path between the two batteries is broken, the first conductor 1300 and the second conductor 1600 cannot form a complete electric path, heat diffusion is prevented, the risk of thermal runaway is reduced, and the safety of the batteries is improved. In other words, by thinning the first conductor 1300 at the first opening 1111 and the second conductor 1600 at the second opening 1411, which is equivalent to adding a circuit protection device in the series connection device, when the battery is in thermal runaway, the electrical path between the battery cells 2000 is quickly cut off, the risk of thermal runaway is reduced, and the safety of the battery is improved.
According to some embodiments of the present invention, referring to fig. 4 and 5, the circuit protection device may also be implemented by providing a thermistor in the first conductor 1300 and the second conductor 1600. Specifically, the second portion 1320 includes a first thermistor 1330, the first thermistor 1330 being disposed at the first opening 1111; the second conductor 1600 includes a second thermistor 1610, the second thermistor 1610 being disposed at the second opening 1411. Therefore, when the temperature of the battery rises due to thermal runaway, the thermistor values at the first opening 1111 and the second opening 1411 sharply rise, which is equivalent to breaking the electrical path between the battery cells 2000, so that the first conductor 1300 and the second conductor 1600 cannot form a complete electrical path, thereby reducing the risk of thermal runaway and improving the safety of the battery.
According to some embodiments of the utility model, the connected mode between thermistor and the conductor is unrestricted, as long as make thermistor fix on the conductor can. For example, the first thermistor 1330 and the second portion 1320 are bonded by a conductive adhesive; and/or the second thermistor 1610 is bonded to the second conductor 1600 by a conductive adhesive.
According to some embodiments of the present invention, referring to fig. 1, 3, 5 and 10, since the battery cell 2000 cap end 2200 is provided with the rolling slot 2220, in order to further fix the battery cell 2000 cap end 2200 by the second elastic support 1400, the second elastic support 1400 may further include a buckle ring 1430, and the buckle ring 1430 abuts against the rolling slot 2220 of the battery cell 2000.
In another aspect of the present invention, a cylindrical battery is provided, which comprises a cylindrical battery cell 2000 and the aforementioned cylindrical battery series connection device, wherein a plurality of cylindrical battery cells 2000 are connected in series through the cylindrical battery series connection device. Therefore, the cylindrical battery is simple in assembly process, the battery core 2000 is not easy to damage, the secondary utilization rate is high, the circuit protection device can reduce the risk of thermal runaway of the battery, and the safety of the battery is improved.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. A cylindrical battery series connection apparatus (1000), comprising:
the battery pack comprises a first elastic bracket (1100) forming a first groove body (1200), wherein the first elastic bracket (1100) is suitable for clamping a negative end (2100) of a battery cell (2000) inserted into the first groove body (1200), a first conductor (1300) is arranged on the inner wall of the first groove body (1200), and the first conductor (1300) is connected with the negative end (2100) of the battery cell (2000);
a second resilient support (1400), the second resilient support (1400) forming a second channel (1500), the second resilient support (1400) being adapted to clamp a cap end (2200) of the electrical core (2000) inserted into the second channel (1500), a second conductor (1600) being disposed within the second channel (1500), the second conductor (1600) being connected to a cap (2210) of the electrical core (2000), and the first conductor (1300) and the second conductor (1600) being electrically connected.
2. The cylindrical battery series connection device (1000) according to claim 1, wherein the first elastic bracket (1100) comprises a first bottom plate (1110) and a first side wall (1120), the first bottom plate (1110) is provided with a first opening (1111), and the first bottom plate (1110) and the first side wall (1120) are connected to form the first groove (1200);
the second elastic support (1400) comprises a second bottom plate (1410) and a second side wall (1420), the second bottom plate (1410) is provided with a second opening (1411), and the second bottom plate (1410) and the second side wall (1420) are connected to form the second trough body (1500);
the first base plate (1110) and the second base plate (1410) are circular in cross-section.
3. The cylindrical cell series connection device (1000) according to claim 2, wherein the first conductor (1300) comprises a first portion (1310) and a second portion (1320), the first portion (1310) being disposed on an inner wall of the first bottom plate (1110) and the first side wall (1120); one end of the second part (1320) is disposed at the first opening (1111) and connected to the first part (1310), and the other end of the second part (1320) extends away from the first slot (1200);
one end of the second conductor (1600) is arranged at the second opening (1411), the other end of the second conductor (1600) extends towards a direction away from the second slot body (1500), and the second part (1320) is connected with the second conductor (1600).
4. The cylindrical battery series connection apparatus (1000) of claim 3, wherein the first elastic bracket (1100) and the second elastic bracket (1400) are vertically arranged, one of the first bottom plate (1110) and the second bottom plate (1410) is provided with a connection portion (1700), and the other of the first bottom plate (1110) and the second bottom plate (1410) is provided with a slot (1800), and the slot (1800) is matched with the connection portion (1700).
5. The cylindrical battery series connection device (1000) of claim 3, wherein the thickness of the second portion (1320) at the first opening (1111) is smaller than the thickness of the remaining portion of the second portion (1320).
6. The cylindrical battery series connection device (1000) of claim 5, wherein the thickness of the second conductor (1600) at the second opening (1411) is less than the thickness of the remaining portion of the second conductor (1600).
7. The cylindrical battery series connection device (1000) of claim 6, wherein the second portion (1320) further comprises a first thermistor (1330), the first thermistor (1330) being disposed at the first opening (1111);
the second conductor (1600) further comprises a second thermistor (1610), the second thermistor (1610) being disposed at the second opening (1411).
8. The cylindrical battery series connection device (1000) according to claim 7, wherein the first thermistor (1330) and the second portion (1320) are bonded by an electrically conductive adhesive; and/or the second thermistor (1610) is bonded to the second conductor (1600) by the conductive adhesive.
9. The cylindrical battery series connection apparatus (1000) according to claim 6 or 7, wherein the second resilient bracket (1400) further comprises a snap ring (1430), the snap ring (1430) abutting against the roll-groove opening (2220) of the battery cell (2000).
10. A cylindrical battery, characterized by comprising a cylindrical cell and the cylindrical battery series connection apparatus (1000) of any one of claims 1 to 9, a plurality of the cylindrical cells being connected in series by the cylindrical battery series connection apparatus (1000).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221173972.7U CN218101492U (en) | 2022-05-16 | 2022-05-16 | Cylindrical battery series connection device and cylindrical battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221173972.7U CN218101492U (en) | 2022-05-16 | 2022-05-16 | Cylindrical battery series connection device and cylindrical battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218101492U true CN218101492U (en) | 2022-12-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221173972.7U Active CN218101492U (en) | 2022-05-16 | 2022-05-16 | Cylindrical battery series connection device and cylindrical battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218101492U (en) |
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2022
- 2022-05-16 CN CN202221173972.7U patent/CN218101492U/en active Active
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