CN115295948A - Dumbbell battery, battery module and vehicle - Google Patents

Dumbbell battery, battery module and vehicle Download PDF

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Publication number
CN115295948A
CN115295948A CN202211104094.8A CN202211104094A CN115295948A CN 115295948 A CN115295948 A CN 115295948A CN 202211104094 A CN202211104094 A CN 202211104094A CN 115295948 A CN115295948 A CN 115295948A
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CN
China
Prior art keywords
battery
hemispherical shell
dumbbell
half ring
shell
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Granted
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CN202211104094.8A
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Chinese (zh)
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CN115295948B (en
Inventor
朱共山
边立富
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Beijing Shengneng Energy Technology Co Ltd
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Beijing Shengneng Energy Technology Co Ltd
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Publication of CN115295948A publication Critical patent/CN115295948A/en
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Publication of CN115295948B publication Critical patent/CN115295948B/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/244—Secondary casings; Racks; Suspension devices; Carrying devices; Holders characterised by their mounting method
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/61—Types of temperature control
    • H01M10/613—Cooling or keeping cold
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
    • H01M10/625—Vehicles
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/64—Heating or cooling; Temperature control characterised by the shape of the cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/655—Solid structures for heat exchange or heat conduction
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/249—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders specially adapted for aircraft or vehicles, e.g. cars or trains
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/543—Terminals
    • H01M50/545—Terminals formed by the casing of the cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/543—Terminals
    • H01M50/547—Terminals characterised by the disposition of the terminals on the cells
    • H01M50/548—Terminals characterised by the disposition of the terminals on the cells on opposite sides of the cell
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/543—Terminals
    • H01M50/552—Terminals characterised by their shape
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/572—Means for preventing undesired use or discharge
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/572—Means for preventing undesired use or discharge
    • H01M50/584—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries
    • H01M50/588—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries outside the batteries, e.g. incorrect connections of terminals or busbars
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/572—Means for preventing undesired use or discharge
    • H01M50/584—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries
    • H01M50/59—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries characterised by the protection means
    • 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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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Secondary Cells (AREA)
  • Connection Of Batteries Or Terminals (AREA)

Abstract

The invention relates to the technical field of batteries, in particular to a dumbbell battery, a battery module and a vehicle. The shell comprises an anode hemispherical shell, an insulating connecting ring and a cathode hemispherical shell which are sequentially connected, the anode hemispherical shell, the insulating connecting ring and the cathode hemispherical shell are arranged in a surrounding manner to form a closed cavity, and electrolyte is filled in the closed cavity; the battery cell comprises a positive plate, a diaphragm and a negative plate which are sequentially arranged, the battery cell is arranged in the closed cavity, the positive plate is electrically connected with the positive hemispherical shell, and the negative plate is electrically connected with the negative hemispherical shell; the insulating assembly is arranged in the closed cavity and is positioned on the outer side of the battery core. The invention can ensure that the battery can dissipate heat quickly, thereby improving the safety of the battery.

Description

Dumbbell battery, battery module and vehicle
Technical Field
The invention relates to the technical field of batteries, in particular to a dumbbell battery, a battery module and a vehicle.
Background
With the development of new energy industries, battery technology has been greatly advanced. The existing batteries are in the forms of cylindrical batteries, square-shell batteries, soft-package batteries, blade batteries and the like, but the batteries cannot be charged and discharged at a large current, the restriction factor is that the surface areas of the positive and negative output ends of the batteries are too small, and when the large current passes through the batteries, the batteries generate heat seriously due to the too small heat dissipation area, so that the safety and the performance of the batteries are influenced.
Therefore, there is a need for a dumbbell battery, a battery module, and a vehicle to solve the above-mentioned problems.
Disclosure of Invention
The invention aims to provide a dumbbell battery, a battery module and a vehicle, which can ensure that the battery can dissipate heat quickly, so that the safety of the battery is improved.
In order to achieve the purpose, the invention adopts the following technical scheme:
a dumbbell battery, comprising:
the shell comprises an anode hemispherical shell, an insulating connecting ring and a cathode hemispherical shell which are sequentially connected, wherein the anode hemispherical shell, the insulating connecting ring and the cathode hemispherical shell are arranged in a surrounding manner to form a closed cavity, and electrolyte is filled in the closed cavity;
the battery cell comprises a positive plate, a diaphragm and a negative plate which are sequentially arranged, the battery cell is arranged in the closed cavity, the positive plate is electrically connected with the positive hemispherical shell, and the negative plate is electrically connected with the negative hemispherical shell;
and the insulating assembly is arranged in the closed cavity and is positioned on the outer side of the battery core.
Further, the positive plate comprises a first semi-ring part, a first connecting part and a second semi-ring part, one end of the first semi-ring part and one end of the second semi-ring part are connected through the first connecting part, and the other end of the first semi-ring part is isolated from the other end of the second semi-ring part.
Further, the negative plate comprises a third half ring part, a second connecting part and a fourth half ring part, one end of the third half ring part and one end of the fourth half ring part are connected through the second connecting part, and the other end of the third half ring part is isolated from the other end of the fourth half ring part.
Furthermore, the power supply also comprises a first lead, one end of the first lead is electrically connected with the first connecting part, and the other end of the first lead is electrically connected with the anode hemispherical shell.
And one end of the second wire is electrically connected with the second connecting part, and the other end of the second wire is electrically connected with the negative electrode hemispherical shell.
Further, the first connecting portion and the second connecting portion are oppositely arranged.
Furthermore, the insulating connecting ring comprises a first fixing part, a connecting ring part and a second fixing part, one end of the first fixing part is connected with the connecting ring part, the other end of the first fixing part is connected with the anode hemispherical shell, one end of the second fixing part is connected with the connecting ring part, and the other end of the second fixing part is connected with the cathode hemispherical shell.
Further, the insulation assembly comprises a first insulation film and a second insulation film, the first insulation film is wrapped on the battery core, and the second insulation film is wrapped on the first insulation film.
Further, the support structure comprises a first support bracket and a second support bracket, the first support bracket is used for supporting the anode hemispherical shell, and the second support bracket is used for supporting the cathode hemispherical shell.
A battery module comprises the dumbbell battery.
A vehicle includes the battery module as described above.
The invention has the beneficial effects that:
the invention provides a dumbbell battery, wherein a shell consists of a positive electrode hemispherical shell, an insulating connecting ring and a negative electrode hemispherical shell which are sequentially connected, a battery core is arranged in the shell and is filled with electrolyte, and an insulating assembly is arranged between the battery core and the shell and plays an insulating role. The positive plate of the battery cell is electrically connected with the positive hemispherical shell, and the negative plate of the battery cell is electrically connected with the negative hemispherical shell. Through the positive negative output end with negative pole hemisphere shell and positive pole hemisphere shell as the battery, increased the surface area of output to increased heat radiating area, made in the battery working process, the heat that the battery produced gives off rapidly, thereby promotes the security and the performance of battery.
The battery module provided by the invention comprises the dumbbell battery, and the negative electrode hemispherical shell and the positive electrode hemispherical shell are used as the positive and negative output ends of the battery, so that the surface area of the output ends is increased, the heat dissipation area is increased, heat generated by the battery is rapidly dissipated in the working process of the battery, and the safety and the performance of the battery are improved.
The vehicle provided by the invention comprises the battery module, the heat dissipation area of the battery module is increased, and the heat generated by the battery is quickly dissipated in the working process of the battery module.
Drawings
FIG. 1 is a schematic view of a dumbbell battery of the present invention;
FIG. 2 is a cross-sectional view of a dumbbell battery of the present invention;
fig. 3 is a cross-sectional view of a cell in a dumbbell battery according to the present invention.
In the figure:
1. a negative electrode hemispherical shell; 2. an insulating connecting ring; 21. a first fixed part; 22. a connecting ring portion; 23. a second fixed part; 24. a first support bracket; 25. a second support bracket; 3. a positive hemispherical shell; 4. a positive plate; 41. a first semi-ring portion; 42. a first connection portion; 43. a second half ring portion; 5. a first conductive line; 6. a negative plate; 61. a third half ring portion; 62. a second connecting portion; 63. a fourth half ring portion; 7. a second conductive line; 8. a diaphragm; 9. an insulating assembly; 91. a first insulating film; 92. a second insulating film.
Detailed Description
The technical scheme of the invention is further explained by combining the attached drawings and the embodiment. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not to be construed as limiting the invention. It should be further noted that, for the convenience of description, only some but not all of the elements associated with the present invention are shown in the drawings.
In the description of the present invention, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection or a removable connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the present invention, unless expressly stated or limited otherwise, the recitation of a first feature "on" or "under" a second feature may include the recitation of the first and second features being in direct contact, and may also include the recitation that the first and second features are not in direct contact, but are in contact via another feature between them. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. "beneath," "under" and "beneath" a first feature includes the first feature being directly beneath and obliquely beneath the second feature, or simply indicating that the first feature is at a lesser elevation than the second feature.
The existing rechargeable battery has the problem that the rechargeable battery can not be charged and discharged by large current, and the restriction factor is that the surface area of the positive and negative output ends of the battery is too small, and when the large current passes through, the battery generates heat seriously due to the too small heat dissipation area, so that the safety and the performance of the battery are influenced.
In order to solve the above problems and ensure that the battery can dissipate heat quickly, thereby improving the safety of the battery, as shown in fig. 1 to 3, the invention provides a dumbbell battery. The dumbbell battery comprises a shell, a battery core and an insulating assembly 9.
The shell comprises an anode hemispherical shell 3, an insulating connecting ring 2 and a cathode hemispherical shell 1 which are sequentially connected, wherein the anode hemispherical shell 3, the insulating connecting ring 2 and the cathode hemispherical shell 1 are arranged in an enclosing manner to form a closed cavity, and electrolyte is filled in the closed cavity; the battery cell comprises a positive plate 4, a diaphragm 8 and a negative plate 6 which are sequentially arranged, the battery cell is arranged in the closed cavity, the positive plate 4 is electrically connected with the positive hemispherical shell 3, and the negative plate 6 is electrically connected with the negative hemispherical shell 1; insulating assembly 9 sets up in the closed cavity, and is located the outside of electric core, and insulating assembly 9 plays insulating effect, prevents that negative pole piece 6 from leading to the fact the short circuit with anodal hemisphere shell 3 electrically conductive.
Further, in other embodiments, the structure of the battery cell may be the negative electrode tab 6, the separator 8 and the positive electrode tab 4, and the positive electrode tab 4 is located at the outer side, which is not limited herein.
Through the positive negative output end with negative pole hemisphere shell 1 and positive pole hemisphere shell 3 as the battery, increased the surface area of output to increased heat radiating area, in making the battery working process, the heat that the battery produced gives off rapidly, thereby promotes the security and the performance of battery. And the thickness of the anode hemispherical shell 3 and the cathode hemispherical shell 1 can be thinner, so that the heat-conducting property is improved.
Further, the positive electrode tab 4 includes a first half ring portion 41, a first connecting portion 42, and a second half ring portion 43, one end of the first half ring portion 41 and one end of the second half ring portion 43 are connected by the first connecting portion 42, and the other end of the first half ring portion 41 is isolated from the other end of the second half ring portion 43. Specifically, the positive plate 4 is in a 3 shape, and the first semi-ring part 41 and the second semi-ring part 43 are adopted, so that the conductive area can be increased; on the other hand, the first half ring portion 41 and the second half ring portion 43 are connected by the first connecting portion 42, and the first half ring portion 41 and the second half ring portion 43 are connected by the first connecting portion 42, so that the capacity of the battery can be increased. In this embodiment, the positive electrode tab 4 may be integrally formed, or may be formed by laser welding or the like, such that the first half ring portion 41, the first connecting portion 42, and the second half ring portion 43 are integrally formed.
Further, the negative electrode tab 6 includes a third half ring portion 61, a second connection portion 62, and a fourth half ring portion 63, one end of the third half ring portion 61 and one end of the fourth half ring portion 63 are connected by the second connection portion 62, and the other end of the third half ring portion 61 is isolated from the other end of the fourth half ring portion 63. Specifically, the negative electrode sheet 6 is in a shape of "3", and by adopting the third half ring part 61 and the fourth half ring part 63, on one hand, the conductive area can be increased; on the other hand, the third half ring portion 61 and the fourth half ring portion 63 are connected by the second connecting portion 62, and the third half ring portion 61 and the fourth half ring portion 63 are connected by the second connecting portion 62, so that the capacity of the battery can be increased. In the present embodiment, the negative electrode sheet 6 may be integrally formed, or may be formed by laser welding or the like, so that the third half ring portion 61, the second connection portion 62 and the fourth half ring portion 63 are integrally formed.
Further, the dumbbell battery further comprises a first lead 5, one end of the first lead 5 is electrically connected with the first connecting portion 42, and the other end of the first lead 5 is electrically connected with the positive electrode hemispherical shell 3. Specifically, one end of the first lead 5 is electrically connected to the first connection portion 42, and the performance of the positive electrode sheet 4 can be maximized. An insulating sheath is arranged on the first lead 5, and the first lead 5 is electrically connected with the anode hemispherical shell 3 through the diaphragm 8, the cathode sheet 6 and the insulating assembly 9. In order to prevent the electrolyte from flowing out through the gap between the first wire 5 and the insulating member 9, the insulating sheath of the first wire 5 and the insulating member 9 are welded by heat fusion. And the clearance is sealed in a laser welding mode, so that the safety of the battery is ensured.
Further, the dumbbell battery further comprises a second lead 7, one end of the second lead 7 is electrically connected with the second connecting portion 62, and the other end of the second lead 7 is electrically connected with the negative electrode hemispherical shell 1. Specifically, one end of the second lead 7 is electrically connected to the second connection portion 62, and the performance of the negative electrode tab 6 can be maximized. An insulating sheath is arranged on the second lead 7, and the second lead 7 penetrates through the insulating component 9 to be electrically connected with the cathode hemispherical shell 1. In order to prevent the electrolyte from flowing out through the gap between the second lead 7 and the insulating member 9, the insulating sheath of the second lead 7 and the insulating member 9 are laser-welded. The gap is sealed by the hot melting welding mode, so that the safety of the battery is ensured.
Further, the first connection portion 42 and the second connection portion 62 are oppositely disposed. With the above arrangement, the arrangement of the first and second wires 5 and 7 is facilitated.
Further, the insulating connection ring 2 comprises a first fixing portion 21, a connection ring portion 22 and a second fixing portion 23, wherein one end of the first fixing portion 21 is connected with the connection ring portion 22, the other end of the first fixing portion 21 is connected with the positive electrode hemispherical shell 3, one end of the second fixing portion 23 is connected with the connection ring portion 22, and the other end of the second fixing portion 23 is connected with the negative electrode hemispherical shell 1. In this embodiment, the first fixing portion 21 and the second fixing portion 23 are both plastic rings, and are used to isolate the positive hemispherical shell 3 from the negative hemispherical shell 1, so as to prevent short circuit. Through the arrangement, when the shell is assembled, the first fixing part 21 and the positive electrode hemispherical shell 3 can be assembled, the second fixing part 23 and the negative electrode hemispherical shell 1 can be assembled, and then the first fixing part and the negative electrode hemispherical shell are welded and assembled with the connecting ring part 22, so that the shell can be assembled conveniently.
Further, the insulation assembly 9 includes a first insulation film 91 and a second insulation film 92, the first insulation film 91 being wrapped on the cell core, and the second insulation film 92 being wrapped on the first insulation film 91. Specifically, in the present embodiment, the first insulating film 91 and the second insulating film 92 are both plastic films, and the first insulating film 91 and the second insulating film 92 are provided to play a role of double protection, on one hand, prevent the electrolyte from leaking, and on the other hand, prevent the short circuit between the negative electrode sheet 6 and the positive electrode hemispherical shell 3.
Further, dumbbell battery still includes bearing structure, and bearing structure includes first support and holds in the palm 24 and second support and hold in the palm 25, and first support holds in the palm 24 and is used for supporting anodal hemisphere shell 3, and second support holds in the palm 25 and is used for supporting negative pole hemisphere shell 1. Specifically, the first supporting bracket 24 is fixedly arranged on the first fixing part 21, the second supporting bracket 25 is fixedly arranged on the second fixing part 23, and one sides of the first supporting bracket 24 and the second supporting bracket 25 departing from the shell are planes, so that the dumbbell battery can be conveniently and horizontally placed; one side of the first supporting bracket 24 and the second supporting bracket 25 facing the shell are arc-shaped surfaces, and the positions corresponding to the anode hemispherical shell 3 and the cathode hemispherical shell 1 are shaped, so that the cathode hemispherical shell 1 and the anode hemispherical shell 3 can be effectively supported.
Furthermore, the battery cells can be arranged in the shell in multiple groups, and an insulating isolation film is arranged between two adjacent groups of battery cells, so that the short circuit phenomenon is prevented. The first lead 5 is electrically connected to all the positive electrode tabs 4, and the second lead 7 is electrically connected to all the negative electrode tabs 6. Through the arrangement, the energy density of the battery can be further improved, and the performance of the battery is improved.
The dumbbell battery provided by the embodiment has the following advantages:
1. the negative electrode hemispherical shell 1 and the positive electrode hemispherical shell 3 are hemispherical, and the positive plate 4 and the negative plate 6 are formed by two semicircular rings, so that the radiating surface area is increased, heat can be better radiated, and the battery cell has excellent radiating characteristics.
2. By adopting the positive plate 4 and the negative plate 6 designed in the embodiment, the capacity of the battery cell can be increased, and the battery cell has a larger surface area than a plane pole piece commonly used in the existing market, so that the requirement of the battery cell for larger and larger capacity is met.
3. Because this dumbbell battery can lie and put, the high greatly reduced of battery has bigger matching nature, satisfies the use of various motorcycle types, can reduce the risk that the battery module held in the palm the end simultaneously.
The embodiment also provides a battery module, which comprises the dumbbell battery. The dumbbell battery can set up the multiunit in battery module, and multiunit dumbbell battery utilizes external busbar electricity to connect, and external busbar only need with anodal hemisphere shell 3 and 1 welded connection of negative pole hemisphere shell can.
The embodiment also provides a vehicle, including as above the battery module, multiunit dumbbell battery utilizes external busbar electricity to connect, external busbar only need with anodal hemisphere shell 3 and negative pole hemisphere shell 1 welded connection can. Through adopting this battery module, satisfy the use of various motorcycle types, can reduce the risk at the bottom of the battery module support simultaneously.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims (11)

1. A dumbbell battery, comprising:
the shell comprises an anode hemispherical shell (3), an insulating connecting ring (2) and a cathode hemispherical shell (1) which are sequentially connected, wherein the anode hemispherical shell (3), the insulating connecting ring (2) and the cathode hemispherical shell (1) are arranged in a surrounding manner to form a closed cavity, and electrolyte is filled in the closed cavity;
the battery cell comprises a positive plate (4), a diaphragm (8) and a negative plate (6) which are sequentially arranged, the battery cell is arranged in the closed cavity, the positive plate (4) is electrically connected with the positive hemispherical shell (3), and the negative plate (6) is electrically connected with the negative hemispherical shell (1);
an insulating assembly (9), wherein the insulating assembly (9) is arranged in the closed cavity and is positioned on the outer side of the battery core.
2. The dumbbell battery according to claim 1, wherein the positive electrode sheet (4) includes a first half ring portion (41), a first connecting portion (42) and a second half ring portion (43), one end of the first half ring portion (41) and one end of the second half ring portion (43) are connected by the first connecting portion (42), and the other end of the first half ring portion (41) is isolated from the other end of the second half ring portion (43).
3. The dumbbell battery according to claim 2, characterized in that the negative electrode plate (6) comprises a third half ring part (61), a second connecting part (62) and a fourth half ring part (63), one end of the third half ring part (61) and one end of the fourth half ring part (63) are connected through the second connecting part (62), and the other end of the third half ring part (61) is isolated from the other end of the fourth half ring part (63).
4. The dumbbell battery according to claim 2, characterized in that it further comprises a first wire (5), one end of the first wire (5) is electrically connected with the first connection part (42), and the other end of the first wire (5) is electrically connected with the positive electrode hemispherical shell (3).
5. The dumbbell battery according to claim 3, characterized in that it further comprises a second wire (7), one end of the second wire (7) is electrically connected with the second connecting part (62), and the other end of the second wire (7) is electrically connected with the negative electrode hemispherical shell (1).
6. A dumbbell battery as defined in claim 3, characterized in that the first connecting portion (42) and the second connecting portion (62) are oppositely disposed.
7. The dumbbell battery according to claim 1, wherein the insulation connection ring (2) comprises a first fixing portion (21), a connection ring portion (22) and a second fixing portion (23), one end of the first fixing portion (21) is connected with the connection ring portion (22), the other end of the first fixing portion (21) is connected with the positive electrode hemispherical shell (3), one end of the second fixing portion (23) is connected with the connection ring portion (22), and the other end of the second fixing portion (23) is connected with the negative electrode hemispherical shell (1).
8. A dumbbell battery according to claim 1, characterized in that the insulating assembly (9) comprises a first insulating film (91) and a second insulating film (92), the first insulating film (91) being wrapped around the cell and the second insulating film (92) being wrapped around the first insulating film (91).
9. The dumbbell battery according to claim 1, characterized by further comprising a support structure, wherein the support structure comprises a first support bracket (24) and a second support bracket (25), the first support bracket (24) is used for supporting the positive hemispherical shell (3), and the second support bracket (25) is used for supporting the negative hemispherical shell (1).
10. A battery module comprising the dumbbell battery according to any one of claims 1 to 9.
11. A vehicle characterized by comprising the battery module according to claim 10.
CN202211104094.8A 2022-09-09 2022-09-09 Dumbbell battery, battery module and vehicle Active CN115295948B (en)

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