CN112820982A - Battery monomer and battery module - Google Patents
Battery monomer and battery module Download PDFInfo
- Publication number
- CN112820982A CN112820982A CN202110191902.8A CN202110191902A CN112820982A CN 112820982 A CN112820982 A CN 112820982A CN 202110191902 A CN202110191902 A CN 202110191902A CN 112820982 A CN112820982 A CN 112820982A
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- Prior art keywords
- battery cell
- battery
- opening
- casing
- water inlet
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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
- 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
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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
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
- H01M10/615—Heating or keeping warm
-
- 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
- H01M10/647—Prismatic or flat cells, e.g. pouch cells
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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
- 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
- H01M10/6556—Solid parts with flow channel passages or pipes for heat exchange
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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
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
- H01M10/6567—Liquids
- H01M10/6568—Liquids characterised by flow circuits, e.g. loops, located externally to the cells or cell casings
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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
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/657—Means for temperature control structurally associated with the cells by electric or electromagnetic means
- H01M10/6571—Resistive heaters
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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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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Secondary Cells (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
本发明涉及电池模组技术领域，公开一种电池单体及电池模组。其中电池单体包括电芯和外壳，电芯的一面设置有正极耳和负极耳；外壳的一端设置有开口，外壳套设于电芯的外周，正极耳和负极耳位于开口的一端，外壳的内壁设置有冷却管道，冷却管道与电芯的外壁贴合，冷却管道的一端为进水口，另一端为出水口。本发明通过在外壳上设置冷却通道，使电池单体的具有热管理功能，且针对单独的电芯进行，热管理效率高；另外，电池单体的结构简单，工作可靠，寿命长。
The invention relates to the technical field of battery modules, and discloses a battery cell and a battery module. The battery cell includes a battery cell and an outer shell, one side of the battery cell is provided with a positive electrode ear and a negative electrode ear; one end of the outer shell is provided with an opening, the outer shell is sleeved on the outer periphery of the battery cell, the positive electrode ear and the negative electrode ear are located at one end of the opening, and the outer shell is provided with an opening. The inner wall is provided with a cooling pipe, the cooling pipe is fitted with the outer wall of the battery core, one end of the cooling pipe is a water inlet, and the other end is a water outlet. In the invention, the cooling channel is arranged on the casing, so that the battery cell has a thermal management function, and the thermal management efficiency is high for a single cell; in addition, the battery cell has a simple structure, reliable operation and long service life.
Description
Technical Field
The invention relates to the technical field of battery modules, in particular to a battery monomer and a battery module.
Background
The heat-related problems of batteries for electric vehicles are key factors determining their operational performance, safety, life and cost of use. Because the battery has certain internal resistance, certain heat is generated while power and electric energy are output, the temperature of the battery is increased, and the service life of the battery is influenced when the temperature of the battery exceeds the normal working temperature range.
In the prior art, in order to ensure that the battery operates at a proper temperature, a thermal management system is generally arranged outside the battery module. On one hand, the heat management system arranged outside the battery module has more parts, so that the use risk is improved; on the other hand, the battery monomer in the battery module cannot be subjected to independent thermal management, and the overall thermal management efficiency is low.
Therefore, a battery cell is needed to solve the above problems.
Disclosure of Invention
Based on the above, the present invention provides a battery cell and a battery module, which have a thermal management function, high thermal management efficiency, reliable operation, and long service life.
In order to achieve the purpose, the invention adopts the following technical scheme:
a battery cell, comprising:
the battery cell comprises a battery cell, a battery core and a battery cover, wherein one surface of the battery cell is provided with a positive electrode lug and a negative electrode lug;
the shell, its one end is provided with the opening, the shell cover is located the periphery of electricity core, anodal ear with the negative pole ear is located open-ended one end, the inner wall of shell is provided with cooling tube, cooling tube with the outer wall laminating of electricity core, cooling tube's one end is the water inlet, and the other end is the delivery port.
As a preferable scheme of the battery cell, the cooling pipeline is spirally wound on the inner wall of the outer shell.
Preferably, the cooling duct is integrally formed with the housing by an extrusion or stamping process.
As a preferred scheme of the battery cell, the water inlet and the water outlet are both arranged on a first side surface of the shell, and the first side surface is perpendicular to a surface where the opening is located.
As a preferable scheme of the battery cell, the water inlet is positioned below the water outlet.
As a single preferred scheme of battery, the outer wall of shell is provided with the heating membrane, water inlet with the delivery port is protruding to be located the heating membrane.
Preferably, the heating film is bonded to an outer wall of the housing.
As a preferable mode of the battery cell, the heating film is provided with an interface, and the interface is convexly arranged on the surface of the opening from a first side surface perpendicular to the surface of the opening.
As a preferred scheme of the battery cell, the battery cell further comprises a cover plate buckled on the opening, the cover plate is welded with the shell, and the cover plate is provided with a positive terminal electrically connected with the positive tab and a negative terminal electrically connected with the negative tab.
The battery module comprises a plurality of battery monomers, a water inlet pipeline and a water outlet pipeline, wherein the water inlet pipeline is communicated with a plurality of water inlets, and the water outlet pipeline is communicated with a plurality of water outlets.
The invention has the beneficial effects that:
according to the invention, the cooling pipeline is arranged on the inner wall of the shell of the single battery and is used for cooling the single battery core when the single battery core is heated, so that the temperature rise of the battery core in the working process is effectively reduced, meanwhile, the problem of part damage caused by the temperature exceeding the rated normal working temperature range is avoided, and the service life of the battery core is prolonged; the battery monomer has a simple structure and a heat management function, is carried out aiming at the independent battery core, and has high heat management efficiency, reliable work and long service life.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments of the present invention will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the contents of the embodiments of the present invention and the drawings without creative efforts.
Fig. 1 is a schematic diagram of a battery cell provided in an embodiment of the present invention;
fig. 2 is a schematic diagram of a battery cell provided in an embodiment of the invention;
FIG. 3 is a schematic view of a housing provided in accordance with an embodiment of the present invention;
FIG. 4 is a schematic view of a heating film provided by an embodiment of the present invention;
fig. 5 is a schematic view of a battery cell hiding heating film according to an embodiment of the present invention;
fig. 6 is a cross-sectional view of a battery cell provided in accordance with an embodiment of the present invention;
fig. 7 is a partially enlarged schematic view at a in fig. 6.
In the figure:
1. an electric core; 11. a positive tab; 12. a negative tab;
2. a housing; 21. a cooling duct; 211. a water inlet; 212. a water outlet; 22. heating the film; 221. an interface; 222. flanging;
3. a cover plate; 31. a positive terminal; 32. and a negative terminal.
Detailed Description
In order to make the technical problems solved, technical solutions adopted and technical effects achieved by the present invention clearer, the technical solutions of the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1 to 7, the present embodiment provides a battery cell for a battery module, the device includes a battery cell 1 and a housing 2, a positive tab 11 and a negative tab 12 are disposed on one surface of the battery cell 1; the one end of shell 2 is provided with the opening, and the periphery of electric core 1 is located to 2 covers of shell, and anodal ear 11 and negative pole ear 12 are located open-ended one end, and the inner wall of shell 2 is provided with cooling tube 21, and the outer wall laminating of cooling tube 21 and electric core 1, the one end of cooling tube 21 is water inlet 211, and the other end is delivery port 212.
The cooling pipeline 21 is arranged on the inner wall of the shell 2 of the single battery and is used for cooling the single battery core 1 when the single battery core 1 generates heat, so that the temperature rise of the battery core 1 in the working process is effectively reduced, the problem of part damage caused by the temperature exceeding a rated normal working temperature range is avoided, and the service life of the battery core 1 is prolonged; the battery is simple in structure, has a heat management function, is carried out on the independent battery cell 1, and is high in heat management efficiency, reliable in work and long in service life.
Specifically, the battery cell further comprises a cover plate 3 buckled on the opening, and after the battery cell 1 is arranged in the shell 2 and buckled, the cover plate 3 is welded with the shell 2, so that the battery cell is assembled. The open-ended setting is favorable to the equipment of electric core 1 with shell 2, and the setting of apron 3 is favorable to electric core 1's protection.
Further, the cover plate 3 is provided with a positive terminal 31 electrically connected with the positive tab 11 and a negative terminal 32 electrically connected with the negative tab 12, so as to facilitate grouping of a plurality of subsequent battery cells. For example, the positive tab 11 and the positive terminal 31 are welded, the negative tab 12 and the negative terminal 32 are welded, and the welding connection reliability is higher.
In this embodiment, in order to provide the cooling duct 21 on the inner wall of the housing 2, the cooling duct 21 is integrally formed with the housing 2 by an extrusion or stamping process. The extrusion or stamping integrated molding process is simple, the manufacturing is convenient, and the structure of the shell 2 and the size of the battery cell are simplified due to the reduction of the number of parts.
Illustratively, the cross section of the cooling duct 21 is rectangular, and one side of the rectangle is attached to the outer wall of the battery cell 1, which is beneficial to improving the cooling effect of the cooling duct 21.
Preferably, to further improve the cooling effect of the cooling pipe 21, the cooling pipe 21 is spirally wound on the inner wall of the housing 2, which is beneficial to extending the length of the cooling pipe 21 and the contact area between the cooling pipe 21 and the battery cell 1, thereby improving the cooling effect.
Further, the water inlet 211 and the water outlet 212 of the cooling pipe 21 are both disposed at the first side of the housing 2, so as to facilitate the introduction and discharge of the cooling water. Alternatively, the first side surface is perpendicular to the surface of the opening, so that the introduction and discharge of cooling water are facilitated while the installation of the cover plate 3 is not affected.
Preferably, the water inlet 211 is located below the water outlet 212, and when cooling water flows into the cooling pipeline 21 from the water inlet 211, the heat of the battery cell 1 can be sufficiently dissipated, which is beneficial to improving the utilization rate and cooling effect of the cooling water.
Due to the fact that the internal resistance of the battery monomer is increased due to the fact that the ambient temperature is reduced, discharging current is reduced, effective available capacity is reduced, and normal use is affected. In this embodiment, the outer wall of the housing 2 is provided with the heating film 22, the water inlet 211 and the water outlet 212 are convexly arranged on the heating film 22, and the heating film 22 is arranged on the outer wall of the housing 2 and used for preheating the battery monomer in the low-temperature working process, so that the problems of current reduction and capacity reduction caused by the increase of internal resistance of the battery cell 1 at low temperature are effectively reduced, and the normal use of the battery cell 1 at low temperature is ensured.
In order to realize the connection between the shell 2 and the heating film 22, the heating film 22 and the outer wall of the shell 2 are bonded, so that the bonding operation is convenient, and the structure is simple.
It should be noted that, as shown in fig. 6 and 7, the heating film 22 on the side of the opening is provided with a flange 222, the flange 222 is adhered to one end of the cover plate 3 away from the housing 2, and the positive terminal 31 and the negative terminal 32 are exposed, and the flange 222 is provided to facilitate preheating of the cover plate 3, so as to ensure thermal management of the whole battery cell. In addition, the water inlet 211 and the water outlet 212 are also convexly arranged on the heating film 22, so that the cooling water can flow in and out conveniently.
Preferably, in order to facilitate the adhesion of the heating film 22, the heating film 22 is provided with a port 221, and the port 221 is protruded from the first side surface to the surface of the opening for the convenience of the operator.
The assembly process of the battery monomer is as follows: firstly, placing the battery cell 1 in the shell 2, positioning the positive electrode tab 11 and the negative electrode tab 12 at the opening, and attaching the cooling pipeline 21 of the shell 2 to the outer wall of the battery cell 1; then respectively welding the positive tab 11 with the positive terminal 31, the negative tab 12 with the negative terminal 32, and the shell 2 and the cover plate 3; finally, the heating film 22 is attached to the outer wall of the housing 2.
This embodiment still discloses a battery module, including a plurality of as above battery monomer, still include inlet channel and outlet pipe way, a plurality of water inlets 211 of inlet channel intercommunication, a plurality of delivery ports 212 of outlet pipe way intercommunication, cooling water gets into every water inlet 211 respectively via the inlet channel and is used for the free cooling of every battery, flows and then the outlet pipe way is discharged through delivery port 212 at last.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Wherein the terms "first position" and "second position" are two different positions.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral 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.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110191902.8A CN112820982A (en) | 2021-02-19 | 2021-02-19 | Battery monomer and battery module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110191902.8A CN112820982A (en) | 2021-02-19 | 2021-02-19 | Battery monomer and battery module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112820982A true CN112820982A (en) | 2021-05-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110191902.8A Pending CN112820982A (en) | 2021-02-19 | 2021-02-19 | Battery monomer and battery module |
Country Status (1)
| Country | Link |
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| CN (1) | CN112820982A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114447506A (en) * | 2022-01-28 | 2022-05-06 | 董晓龙 | Modular assembly and bearing type lithium battery structure |
| CN115528349A (en) * | 2022-11-03 | 2022-12-27 | 楚能新能源股份有限公司 | Single battery and battery module of integrated thermal management structure |
| WO2023133783A1 (en) * | 2022-01-14 | 2023-07-20 | 宁德时代新能源科技股份有限公司 | Battery cell, manufacturing method and manufacturing device therefor, battery, and electric apparatus |
| EP4307442A4 (en) * | 2022-01-11 | 2024-10-16 | Contemporary Amperex Technology (Hong Kong) Limited | CELL, BATTERY, ELECTRICAL DEVICE AND METHOD FOR MANUFACTURING CELL |
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2021
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| DE102010041698A1 (en) * | 2010-09-30 | 2012-04-05 | Sb Limotive Company Ltd. | Battery cell i.e. lithium ion battery cell, for connecting with drive system of e.g. electric car, has stiffening element arranged at side surface of housing for enlarging moment of inertia of side surface |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4307442A4 (en) * | 2022-01-11 | 2024-10-16 | Contemporary Amperex Technology (Hong Kong) Limited | CELL, BATTERY, ELECTRICAL DEVICE AND METHOD FOR MANUFACTURING CELL |
| WO2023133783A1 (en) * | 2022-01-14 | 2023-07-20 | 宁德时代新能源科技股份有限公司 | Battery cell, manufacturing method and manufacturing device therefor, battery, and electric apparatus |
| CN114447506A (en) * | 2022-01-28 | 2022-05-06 | 董晓龙 | Modular assembly and bearing type lithium battery structure |
| CN114447506B (en) * | 2022-01-28 | 2024-05-24 | 董晓龙 | Modularized assembling and bearing type lithium battery structure |
| CN115528349A (en) * | 2022-11-03 | 2022-12-27 | 楚能新能源股份有限公司 | Single battery and battery module of integrated thermal management structure |
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