CN209804796U - Cylindrical battery and battery module - Google Patents
Cylindrical battery and battery module Download PDFInfo
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- CN209804796U CN209804796U CN201920481587.0U CN201920481587U CN209804796U CN 209804796 U CN209804796 U CN 209804796U CN 201920481587 U CN201920481587 U CN 201920481587U CN 209804796 U CN209804796 U CN 209804796U
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- battery
- left end
- conductive
- battery shell
- cylindrical
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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
Abstract
the application discloses cylindrical battery and battery module, cylindrical battery includes: the battery comprises a battery shell, an inner core accommodated in the battery shell, a positive terminal arranged at the axial right end of the battery shell and insulated and separated from the battery shell, and a negative terminal arranged at the axial left end of the battery shell and insulated and separated from the battery shell, wherein the negative terminal protrudes leftwards out of the left end surface of the battery shell; the battery shell comprises a battery shell shaft, and is characterized by further comprising an insulating spacer ring and a conductive cap, wherein the insulating spacer ring is formed by an insulating ring sleeve which is attached to the left end of the battery shell shaft and is arranged outside the left end of the battery shell shaft in a leaning-on mode and a ring-shaped inner flange which is radially and inwards protruded from a circular opening edge of the left end of the ring sleeve shaft, the conductive cap is formed by an electrically conductive ring sleeve which is attached to the left end of the ring sleeve and a bottom cover which is integrally arranged at the left end of the axis of the electrically conductive ring sleeve and seals an opening of the left end of. The battery of this application can enough carry out the plug-in exempt from to weld in groups, and the short circuit risk of the battery module after in groups obviously reduces moreover.
Description
Technical Field
The application relates to the field of batteries, in particular to a cylindrical battery and a battery module.
Background
under the dual pressure drive of emission regulations and energy consumption, "motorization" has become an undisputed inevitable trend in the global automobile industry. Meanwhile, the method also brings a brand new development opportunity under the background of energy revolution brought by the automobile industry in China. However, today, the domestic new energy automobile industry is still in a continuous optimization and exploration stage.
From the technical point of view, the lithium ion battery is the most suitable energy for replacing gasoline at the present stage, the biggest difference between the new energy automobile and the traditional automobile lies in the innovation of a power system, and the power battery is the core component of the new energy automobile.
In the existing cathode welding-free plug-in grouping technology, the cathode end of each battery is mechanically inserted into a battery insertion hole of a battery clamp and is tightly surrounded by a metal conducting strip embedded in the battery insertion hole, and then other connecting structures are matched to form a battery module. However, the plug-in connection necessarily requires the battery case to be charged, and since the battery case is charged, after the battery case is assembled into a battery pack, the battery case may contact with a water-cooling plate, a wire harness and the like in the battery case in a vibration environment, so that there is a risk of short circuit and the like.
Disclosure of Invention
The purpose of the application is: to above-mentioned problem, provide a cylindrical battery of novel structure, it can enough carry out the plug-in exempts from to weld in groups, and the short circuit risk of the battery module after in groups obviously reduces moreover.
The technical scheme of the application is as follows:
a cylindrical battery comprising:
A cylindrical battery case having a cylindrical shape and a cylindrical shape,
An inner core received in the battery case,
A positive terminal disposed at the axially right end of the battery case, conductively connected to the positive electrode of the inner core, and insulated from the battery case, and
The negative terminal is arranged at the left end of the axis of the battery shell, is electrically connected with the negative electrode of the inner core and is insulated and separated from the battery shell, and the negative terminal protrudes leftwards out of the left end surface of the battery shell;
further comprising:
The insulating space ring is composed of an insulating ring sleeve which is attached to and sleeved outside the left end of the battery shell shaft and a circle of annular inner flange which radially protrudes inwards from a circular opening edge at the left end of the ring sleeve shaft, and the axial right end face of the annular inner flange is in abutting contact with the axial left end face of the battery shell; and
The conductive cap is composed of a conductive annular sleeve which is arranged outside the annular sleeve in an abutting and sleeving mode and a bottom cover which is integrally arranged at the left end of the axis of the conductive annular sleeve and seals the opening part at the left end of the axis of the conductive annular sleeve in a sealing mode, and the negative terminal extends into the central hole of the annular inner flange and is fixedly welded with the bottom cover.
on the basis of the technical scheme, the cylindrical battery also comprises the following preferable scheme:
the insulating space ring is made of plastic.
the insulating space ring is made of rubber.
The conductive cap is made of metal.
the conductive cap is made of aluminum or steel.
the bottom cap is disposed against the annular inner flange.
The axial length of the insulating circular ring sleeve is greater than that of the conductive circular ring sleeve.
the circular open edge at the axial right end of the insulating ring sleeve is integrally provided with a circle of annular outer flange protruding outwards in the radial direction.
the negative terminal and the bottom cover are fixed by laser welding
the application also discloses a battery module, it includes:
The battery clamp is provided with a battery inserting hole;
a metal conductive tab embedded in the battery insertion hole, and the metal conductive tab includes: the elastic claws are integrally arranged on the periphery of the bottom plate and are arranged at intervals along the circumferential direction; and
A battery;
The battery is a cylindrical battery with the structure, and the conductive cap is inserted into the battery insertion hole and is surrounded by the plurality of elastic claws on the metal conductive sheet.
the application has the advantages that: this application is positive respectively to current both ends, negative terminal and the uncharged cylindrical battery of battery case carry out the institutional advancement, establish insulating space ring and electrically conductive block cap at its one end cover, electrically conductive block cap and negative terminal conductive welding are fixed, insulating space ring will electrically conductive block cap and battery case insulation are kept apart, not only make this battery can carry out the plug-in and exempt from to weld in groups, in order to obtain the negative pole and exempt from to weld plug-in battery module, battery case can not be electrified simultaneously, greatly reduced the short circuit risk of battery module when actual application.
Drawings
in order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required to be used in the description of the embodiments are briefly introduced below, the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is an exploded view of a cylindrical battery according to an embodiment of the present invention;
Fig. 2 is an axial cross-sectional view of a cylindrical battery according to an embodiment of the present invention;
Fig. 3 is a schematic view illustrating an assembly structure of a battery module according to a second embodiment of the present application;
Fig. 4 is an exploded schematic view of a battery module according to a second embodiment of the present application;
wherein: 1-battery shell, 2-negative terminal, 3-insulating spacer ring, 301-insulating circular ring sleeve, 302-annular inner flange, 303-annular outer flange, 4-conductive cap, 401-conductive circular ring sleeve, 402-bottom cover, 5-positive terminal, 6-battery clamp, 601-battery plug hole, 7-metal conductive sheet, 701-bottom sheet, 702-elastic claw and 8-metal parallel network.
Detailed Description
the present application will be described in further detail below with reference to the accompanying drawings by way of specific embodiments. The present application may be embodied in many different forms and is not limited to the embodiments described in the present embodiment. The following detailed description is provided to facilitate a more thorough understanding of the present disclosure, and the words used to indicate orientation, top, bottom, left, right, etc. are used solely to describe the illustrated structure in connection with the accompanying figures.
One skilled in the relevant art will recognize, however, that one or more of the specific details can be omitted, or other methods, components, or materials can be used. In some instances, some embodiments are not described or not described in detail.
Furthermore, the technical features, aspects or characteristics described herein may be combined in any suitable manner in one or more embodiments. It will be readily appreciated by those of skill in the art that the order of the steps or operations of the methods associated with the embodiments provided herein may be varied. Thus, any sequence in the figures and examples is for illustrative purposes only and does not imply a requirement in a certain order unless explicitly stated to require a certain order.
The numbering of the components as such, e.g., "first", "second", etc., is used herein only to distinguish the objects as described, and does not have any sequential or technical meaning. The term "connected" and "coupled" when used in this application, unless otherwise indicated, includes both direct and indirect connections (couplings).
The first embodiment is as follows: cylindrical battery
fig. 1 and 2 show one embodiment of a cylindrical battery of the present application, which, like some prior cylindrical batteries, also includes: a cylindrical battery case 1, a core (not shown) housed in the battery case, a positive terminal 5 provided at the right end in the axial direction of the battery case, and a negative terminal 2 provided at the left end in the axial direction of the battery case. Wherein: the positive terminal 5 is conductively connected with the positive electrode of the inner core, and the positive terminal 5 is insulated and isolated from the battery shell 1. The negative terminal 2 is electrically connected with the negative electrode of the inner core, and the negative terminal 2 is insulated and isolated from the battery shell 1. That is to say, the battery case 1 of the battery is not conductively connected with the positive electrode of the battery core and not conductively connected with the negative electrode of the battery core, and the battery case 1 is not electrified. In order to facilitate the access of the positive and negative terminals of the battery to the circuit, the negative terminal 2 protrudes leftwards from the axial left end face of the battery shell 1, and the positive terminal 5 protrudes rightwards from the axial right end face of the battery shell 1.
In the present embodiment, both the left and right are referred to fig. 1 and 2.
the key improvement of this embodiment is that the cylindrical battery is also provided with an insulating spacer 3 and a conductive cap 4. Wherein:
the insulating spacer 3 is composed of an insulating annular sleeve 301 which is closely sleeved outside the left end of the battery shell 1 and a circle of annular inner flange 302 which radially protrudes inwards from a circular open edge at the left end of the annular sleeve shaft, and the axial right end face of the annular inner flange 302 is abutted and contacted with the axial left end face of the battery shell 1.
The conductive cap 4 is composed of a conductive annular sleeve 401 closely sleeved outside the annular sleeve 301 and a bottom cover 402 integrally arranged at the left end of the axis of the conductive annular sleeve 401, and the bottom cover 402 seals and seals the opening part at the left end of the axial direction of the conductive annular sleeve 401. The negative terminal 2 extends leftward into the center hole of the annular inner flange 302 and is fixed to the bottom cover 402 by laser welding. Thus, the negative terminal 2 and the conductive cap 4 are electrically and fixedly connected.
The insulating space ring 3 can be made of hard plastic or soft rubber, and has the function of insulating and isolating the conductive cap 4 from the battery shell 1, so as to prevent short circuit or other electrical accidents caused by the fact that the conductive cap is easily contacted with conductors in the environment due to electrification.
In order to improve the insulating and isolating capacity of the insulating space ring 3 to the conductive cap 4 and the battery shell 1, the axial length of the insulating annular sleeve 301 is set to be greater than that of the conductive annular sleeve 401. Further, a circle of annular outer flange 303 protruding outwards in the radial direction is integrally arranged on the circular open edge at the axial right end of the insulating circular ring sleeve 301.
The conductive cap 4 is preferably made of metal, preferably aluminum or steel.
After assembly, the bottom cover 402 and the annular inner flange 302 preferably abut against each other in the axial direction to reduce the possibility of axial loosening of the conductive cap 4.
Example two: battery module
Fig. 3 and 4 show an embodiment of the battery module according to the present invention, and like the conventional battery module, the battery module also includes a battery holder 6 (or battery support), a parallel network 8, a plurality of metal conductive sheets 7 and a plurality of batteries, and only one metal conductive sheet 7 and one battery are shown for convenience of drawing and clarity of view. Wherein:
The battery clamp 6 is provided with a plurality of battery inserting holes 601 arranged in a matrix. The conductive metal tabs 7 are fitted into the respective cell insertion holes 601. The metal conductive sheet 7 includes a base plate 701 and a plurality of elastic claws 702 integrally provided around the base plate and arranged at intervals in the circumferential direction. The cells are arranged in a matrix shape, and the right end of each cell is inserted into the cell insertion hole 601 of the cell clamp.
The battery holder 6 is further provided with notches for communicating the battery insertion holes 601 with each other, and the interconnection mesh 8 made of a metal material is inserted into the notches and the battery insertion holes and is in conductive contact with the base plate 701 of each of the conductive metal sheets 7.
The key improvement of this embodiment is that each battery in the battery module adopts the structure of the cylindrical battery in the first embodiment, the conductive cap 4 on each battery is respectively inserted into the corresponding battery insertion hole 601 and tightly embraced by each elastic claw 702 on the metal conductive sheet 7 inserted into the battery insertion hole 601, so as to realize the conductive connection between the battery cathode and the metal conductive sheet 7, and the parallel connection net 7 is in conductive contact with the bottom sheet 701 of each metal conductive sheet 7, thereby realizing the mutual connection of the battery cathodes — the cathodes of the batteries are connected in parallel.
In practical applications, a group of cylindrical cells arranged in a matrix shape (for convenience of describing the solution of the present embodiment, these cylindrical cells are referred to as right cells) is usually arranged on the right side of the battery clamp 6 in fig. 3, and after the positive terminal on the left side of these right cells is inserted into the cell insertion hole 601 of the battery clamp 6 to the left and is welded and fixed with the conductive metal sheet 7, the right terminal (negative terminal) on the left side of the battery shown in fig. 3 is inserted into the cell insertion hole 601 to the right and is surrounded by each elastic claw 702 on the conductive metal sheet 7. This achieves the aforementioned series connection of the left-side battery and the right-side battery.
After the assembly is completed, each elastic claw 702 of the metal conducting plate 7 is tightly clamped between the hole wall of the battery insertion hole 601 and the outer peripheral surface of the conductive cap 4, and a large axial drawing force must be applied to possibly separate the conductive cap 4 from the battery insertion hole 501, so that the connection reliability of the cylindrical battery and the battery clamp can be ensured without welding the metal conducting plate 7 and the conductive cap 4, and the conductive stability of the metal conducting plate 7 and the conductive cap 4 is ensured. The so-called negative electrode welding-free plug-in battery module.
the battery plug-in mounting hole 601 is characterized in that a circle of radial inward convex limiting inner flange is arranged on the hole wall of the axial middle part of the battery plug-in mounting hole 601, the left battery and the right battery are respectively arranged on the two axial sides of the limiting inner flange, the metal conducting plate 7 is arranged on the left side of the limiting inner flange, and after the right battery and the metal conducting plate 7 are welded and fixed, the right battery cannot be separated from the battery plug-in mounting hole 601 due to the fact that the right battery and the metal conducting plate 7 are limited by the limiting inner flange.
The above embodiments are only for illustrating the technical concepts and features of the present application, and the purpose of the embodiments is to enable people to understand the content of the present application and implement the present application, and not to limit the protection scope of the present application. All equivalent changes and modifications made according to the spirit of the main technical scheme of the application are covered in the protection scope of the application.
Claims (10)
1. A cylindrical battery comprising:
A cylindrical battery case (1),
An inner core received in the battery case,
a positive terminal (5) disposed at the axially right end of the battery case, conductively connected to the positive electrode of the inner core, and insulated from the battery case, and
the negative terminal (2) is arranged at the left end of the axis of the battery shell, is electrically connected with the negative electrode of the inner core and is insulated and separated from the battery shell, and the negative terminal (2) protrudes leftwards out of the left end surface of the battery shell (1);
It is characterized by also comprising:
The insulating space ring (3) is composed of an insulating annular sleeve (301) which is attached to and sleeved outside the left end of the battery shell (1) and a circle of annular inner flange (302) which protrudes inwards in the radial direction from a circular open edge at the left end of the annular sleeve shaft, and the axial right end face of the annular inner flange (302) is in abutting contact with the axial left end face of the battery shell (1); and
the conductive cover cap (4) is composed of a conductive annular sleeve (401) which is attached to and sleeved outside the annular sleeve (301) and a bottom cover (402) which is integrally arranged at the left end of the axis of the conductive annular sleeve (401) and seals an opening part at the left end of the axis of the conductive annular sleeve (401), and the negative terminal (2) extends into a central hole of the annular inner flange (302) and is welded and fixed with the bottom cover (402).
2. A cylindrical battery according to claim 1, wherein the insulating spacer (3) is of a plastic material.
3. The cylindrical battery according to claim 1, wherein the insulating spacer (3) is made of rubber.
4. a cylindrical battery according to claim 1, wherein the conductive cap (4) is of metal.
5. a cylindrical battery according to claim 4, characterized in that the conductive cap (4) is made of aluminum or steel.
6. The cylindrical battery of claim 1, wherein the bottom cap (402) is disposed against the annular inner flange (302).
7. the cylindrical battery according to claim 1, wherein the axial length of the insulating annular sleeve (301) is greater than the axial length of the conductive annular sleeve (401).
8. The cylindrical battery according to claim 1, wherein the circular open side of the axial right end of the insulating circular ring sleeve (301) is integrally provided with a ring of external annular flange (303) protruding radially outwards.
9. The cylindrical battery according to claim 1, wherein the negative terminal (2) is fixed to the bottom cover (402) by laser welding.
10. A battery module, comprising:
the battery clamp (6) is provided with a battery inserting hole (601);
A conductive metal sheet (7) that is fitted in the battery insertion hole (601), and the conductive metal sheet (7) includes: the elastic claw type shoe comprises a bottom plate (701) and a plurality of elastic claws (702) which are integrally arranged on the periphery of the bottom plate and are arranged at intervals along the circumferential direction; and
A battery;
The battery is the cylindrical battery as claimed in any one of claims 1 to 9, and the conductive cap (4) is inserted into the battery insertion hole (601) and is surrounded by the plurality of elastic claws (702) on the conductive metal sheet (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920481587.0U CN209804796U (en) | 2019-04-10 | 2019-04-10 | Cylindrical battery and battery module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920481587.0U CN209804796U (en) | 2019-04-10 | 2019-04-10 | Cylindrical battery and battery module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209804796U true CN209804796U (en) | 2019-12-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920481587.0U Active CN209804796U (en) | 2019-04-10 | 2019-04-10 | Cylindrical battery and battery module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209804796U (en) |
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- 2019-04-10 CN CN201920481587.0U patent/CN209804796U/en active Active
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20200327 Granted publication date: 20191217 |
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| PP01 | Preservation of patent right | ||
| PD01 | Discharge of preservation of patent |
Date of cancellation: 20230309 Granted publication date: 20191217 |
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| PD01 | Discharge of preservation of patent | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230823 Address after: Room J2243, No. 6, Lane 129, Huajiang Road, Jiading District, Shanghai, 201800 Patentee after: Shanghai Qike Network Technology Co.,Ltd. Address before: 3 / F, building 5, No. 892, Wusong Road, Guoxiang street, Wuzhong Economic Development Zone, Suzhou City, Jiangsu Province Patentee before: ANKAO (SUZHOU) ENERGY Co.,Ltd. |
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| TR01 | Transfer of patent right |