CN207800714U - Shell and battery modules for battery modules - Google Patents

Shell and battery modules for battery modules Download PDF

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Publication number
CN207800714U
CN207800714U CN201820197208.0U CN201820197208U CN207800714U CN 207800714 U CN207800714 U CN 207800714U CN 201820197208 U CN201820197208 U CN 201820197208U CN 207800714 U CN207800714 U CN 207800714U
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CN
China
Prior art keywords
edge
shell
weld part
welding surface
welding
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Active
Application number
CN201820197208.0U
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Chinese (zh)
Inventor
王志超
章华
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Contemporary Amperex Technology Co Ltd
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Contemporary Amperex Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Contemporary Amperex Technology Co Ltd filed Critical Contemporary Amperex Technology Co Ltd
Priority to CN201820197208.0U priority Critical patent/CN207800714U/en
Priority to PCT/CN2018/081974 priority patent/WO2019148644A1/en
Application granted granted Critical
Publication of CN207800714U publication Critical patent/CN207800714U/en
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Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/204Racks, modules or packs for multiple batteries or multiple cells
    • H01M50/207Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
    • H01M50/209Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for prismatic or rectangular cells
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10Primary casings; Jackets or wrappings
    • H01M50/102Primary casings; Jackets or wrappings characterised by their shape or physical structure
    • H01M50/103Primary casings; Jackets or wrappings characterised by their shape or physical structure prismatic or rectangular
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/218Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material
    • H01M50/22Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material of the casings or racks
    • H01M50/222Inorganic material
    • H01M50/224Metals
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Sealing Battery Cases Or Jackets (AREA)

Abstract

The utility model is related to a kind of shells and battery modules for battery modules, the shell includes ontology, first edge and second edge positioned at the opposite both ends of ontology, and first edge and second edge extend in a first direction and be joined to form accommodating cavity;First edge is formed with the weld part extended towards second edge by ontology;Second edge is provided with the receiving portion for accommodating weld part, and weld part is with the mutually chimeric setting of receiving portion to form weld seam;Wherein, receiving portion has welding surface, and the part of the close accommodating cavity of welding surface can block the light via weld seam.The utility model in the first edge and second edge being oppositely arranged by being respectively set mutually chimeric weld part and receiving portion, at least part welding surface of receiving portion is enable to stop that laser beam is penetrated from weld seam, the problem of light leakage being easy when avoiding butt welding, it may be omitted with the metal strip padded when butt welding simultaneously, it is aesthetic in appearance, reduce material cost.

Description

Shell and battery modules for battery modules
Technical field
The utility model is related to the welding technology fields of shell, more particularly to a kind of shell and electricity for battery modules Pond module.
Background technology
With environmental consciousness enhancing and low-carbon economy it is in the ascendant, more and more equipment selections is with can charge and discharge Lithium ion battery module is as power supply, such as mobile phone, laptop, electric tool, electric vehicle.Lithium ion battery module Positive/negative plate, electrolyte, the diaphragm of battery unit be packaged in shell jointly, and shell is sealed by hush panel.
In general, shell is machined by laser welding.Laser welding is to be welded using the focus scanning of laser beam The region that metal is in contact, high temperature make metal melting link together.Refering to fig. 1, the weld seam S at welding point is parallel by two Plane is formed.When welding, laser beam is directed toward enclosure interior by weld seam S, often because machining accuracy and frock clamp position Problem causes to weld light leakage and puncture the diaphragm or pole piece of enclosure interior battery unit, causes internal short-circuit of battery or micro-short circuit. Even if being welded to it using the laser beam with certain inclination angle, the section for welding contact line equally can be by part of laser beam Enclosure interior is reflexed to, keeps battery unit impaired.
In order to avoid laser welding damages the battery unit of enclosure interior, need in one layer of metal of weld seam lower liner L.But efficiency of assembling can be influenced by increasing parts, also increase material cost.
Utility model content
One purpose of the utility model embodiment is to provide a kind of shell, and light leakage when welding can effectively be avoided to ask Topic.
Another purpose of the utility model embodiment is to provide a kind of battery modules, can reduce laser beam welding Middle laser beam is to the injury caused by battery unit.
On the one hand, the utility model embodiment proposes a kind of shell for battery modules, and shell includes ontology, is located at The first edge and second edge at the opposite both ends of ontology, first edge extend in a first direction and are connected with second edge To form accommodating cavity;First edge is formed with the weld part extended towards second edge by ontology;Second edge is provided with appearance Receive the receiving portion of weld part, weld part with receiving portion is mutually chimeric is arranged to form weld seam;Wherein, receiving portion has welding surface, The part of the close accommodating cavity of welding surface can block the light via weld seam.
According to the one side of the utility model embodiment, first edge further comprises the recess portion being connected with weld part, Recess portion is in the first stairstepping with the cross section of weld part in a first direction;What second edge further comprised being connected with receiving portion Protrusion, protrusion and the cross section of receiving portion in a first direction are in the second stairstepping, and the first stairstepping and the second stairstepping energy It is enough mutually chimeric.
According to the one side of the utility model embodiment, the cross section of weld part in a first direction is rectangular, and square The thickness of shape is less than the wall thickness of first edge, and receiving portion is formed with two welding surfaces for extending in a first direction and intersecting, Weld seam is formed between one of welding surface and weld part, another welding surface can block the light via weld seam.
According to the one side of the utility model embodiment, the cross section of weld part in a first direction is right angle trigonometry Shape, the bevel edge of right angled triangle towards second edge and by accommodating cavity to shell outside direction tilt upwards;The weldering of receiving portion Junction is the plane for the bevel edge for being parallel to right angled triangle.
According to the one side of the utility model embodiment, weld part is to be dashed forward towards what second edge extended to form by ontology Go out portion, at least one section of the cross section of protruding portion in a first direction successively decreases on the direction towards second edge;Receiving portion is Holding tank, the shape of holding tank and the shape of protruding portion match.
According to the one side of the utility model embodiment, the cross section of protruding portion in a first direction is triangular in shape, phase The holding tank answered is triangular groove;Receiving portion is formed with two welding surfaces for extending in a first direction and intersecting, wherein a welding Weld seam is formed between face and weld part, another welding surface can block the light via weld seam.
According to the one side of the utility model embodiment, the cross section of protruding portion in a first direction is trapezoidal, accordingly Holding tank be dovetail groove;Receiving portion is formed with corresponding two welding surfaces extended in a first direction, two welding surface settings To be respectively parallel to trapezoidal short bottom edge and bevel edge, wherein it is parallel between the welding surface and weld part on short bottom edge and forms weld seam, Light via weld seam can be blocked by being parallel to the welding surface of bevel edge.
According to the one side of the utility model embodiment, the cross section of protruding portion in a first direction is arched, arch Chord length be equal to first edge wall thickness, corresponding holding tank be arcuate slots.
According to the one side of the utility model embodiment, shell tubular metal shell by sheet metal component bending.
On the other hand, the utility model embodiment also proposed a kind of battery modules, including shell, cover board, and setting Battery unit in the enclosure space surrounded by shell and cover board, wherein shell is shell as described above.
The shell that the utility model embodiment provides, by being set respectively in the first edge and second edge being oppositely arranged Set mutually chimeric weld part and receiving portion so that at least part welding surface of receiving portion can stop laser beam from weld seam Through, the problem of light leakage is easy when avoiding butt welding, while may be omitted with the metal strip padded when butt welding, external form Beauty reduces material cost.
Description of the drawings
The feature, advantage and technique effect of the utility model exemplary embodiment described below with reference to the accompanying drawings.
Fig. 1 is the structural schematic diagram of the shell provided in the prior art;
Fig. 2 is a kind of structural schematic diagram for shell that the utility model embodiment provides;
Fig. 3 is the structural schematic diagram of the first weld part of shell shown in Fig. 2;
Fig. 4 is the structural schematic diagram of second of weld part of shell shown in Fig. 2;
Fig. 5 is the structural schematic diagram of the third weld part of shell shown in Fig. 2;
Fig. 6 is the structural schematic diagram of the 4th kind of weld part of shell shown in Fig. 2;
Fig. 7 is the structural schematic diagram of the 5th kind of weld part of shell shown in Fig. 2;
Fig. 8 is a kind of structural schematic diagram for battery modules that the utility model embodiment provides.
Wherein:
1- ontologies;10- first edges;11- weld parts;12- recess portions;20- second edges;21- receiving portions;The protrusions 22-;S- Weld seam;C- accommodating cavities;D- first directions;
111- is rectangular;112- right angled triangles;113- triangles;114- is trapezoidal;115- arch;213- triangular grooves;214- Dovetail groove;215- arcuate slots;211a, 211b, 212,213a, 213b, 214a, 214b, 215- welding surfaces;
100- shells;200- cover boards;300- battery units.
In the accompanying drawings, identical component uses identical reference numeral.Attached drawing is not drawn according to actual ratio.
Specific implementation mode
The feature and exemplary embodiment of the various aspects of the utility model is described more fully below.It is retouched in detail in following In stating, it is proposed that many details, in order to provide the comprehensive understanding to the utility model.But for people in the art It will be apparent that the utility model can be implemented in the case of some details in not needing these details for member. Below the description of embodiment is used for the purpose of providing to the more preferable of the utility model by showing the example of the utility model Understanding.In the the accompanying drawings and the following description, at least part of known features and technology are not shown, to avoid to this reality Unnecessary obscure is caused with novel;Also, for clarity, may be exaggerated the size of part-structure.In addition, hereinafter being retouched Feature, the structure or characteristic stated can be in any suitable manner incorporated in one or more embodiments.
The noun of locality of middle appearance described below is direction shown in figure, is not to be used for battery to the utility model The shell of module and the concrete structure of battery modules are defined.In the description of the present invention, it should also be noted that, removing Non- separately to have specific regulation and limit, term " installation ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, also may be used To be detachable connection, or it is integrally connected;It can be directly connected, can also be indirectly connected.For the common of this field For technical staff, visual concrete condition understands the concrete meaning of above-mentioned term in the present invention.
The utility model in order to better understand is used for battery with reference to Fig. 2 to Fig. 8 to the utility model embodiment The shell and battery modules of module are described in detail.
Referring to Fig.2, the utility model embodiment provides a kind of shell for battery modules, including ontology 1, it is located at ontology The first edge 10 and second edge 20 at 1 opposite both ends, first edge 10 and second edge 20 extend along first direction D and It is joined to form accommodating cavity C;First edge 10 is formed with the weld part 11 extended towards second edge 20 by ontology 1;The Two edges 20 are provided with the receiving portion 21 for accommodating weld part 11, and weld part 11 is with the mutually chimeric setting of receiving portion 21 to form weld seam S;Wherein, there is receiving portion 21 welding surface, the part of the close accommodating cavity C of welding surface can block the light via weld seam S, To prevent laser beam from being penetrated from weld seam S, when avoiding butt welding the problem of easy light leakage.
The concrete structure of the shell for battery modules is described in further detail in Fig. 3 to Fig. 7 below in conjunction with the accompanying drawings.
As an alternative embodiment, first edge 10 further comprises the recess portion being connected with weld part 11 12, it is recessed Portion 12 is in the first stairstepping with the cross section on weld part 11 in a first direction D;Second edge 20 further comprises and receiving portion 21 connected protrusions 22, protrusion 22 and the cross section in receiving portion 21 in a first direction D are in the second stairstepping, and the first stairstepping It can be mutually chimeric with the second stairstepping.
Specifically, the cross section on D is rectangular 111 to weld part 11 in a first direction, and rectangular 111 thickness is less than The wall thickness of first edge 10, receiving portion 21 are formed with two welding surfaces 211a, the 211b for extending along first direction D and intersecting, In weld seam S is formed between a welding surface 211a and weld part 11, another welding surface 211b can block the light via weld seam S Line, as shown in Figure 3.
As an alternative embodiment, the cross section on D is right angled triangle 112 to weld part 11 in a first direction, The bevel edge of right angled triangle 112 tilts upwards towards second edge 20 and by the direction outside accommodating cavity C to shell;Receiving portion 21 Welding surface 212 be the bevel edge for being parallel to right angled triangle 112 plane.Part of the welding surface 212 far from accommodating cavity and weldering Weld seam S is formed between socket part 11, welding surface 212 can block the light via weld seam S close to the part of accommodating cavity C, such as Shown in Fig. 4.
As an alternative embodiment, weld part 11 is the protrusion extended to form towards second edge 20 by ontology 1 At least one section of portion, the protruding portion cross section on D in a first direction successively decreases on the direction towards second edge 20;Receiving portion 21 For holding tank, the shape of holding tank and the shape of protruding portion match.
Specifically, the cross section triangular in shape 113 on D, corresponding holding tank are triangular groove to protruding portion in a first direction 213;Receiving portion 21 is formed with two the welding surfaces 213a, 213b for extending in a first direction and intersecting, wherein a welding surface Weld seam S is formed between 213a and weld part 11, another welding surface 213b can block the light via weld seam S, such as Fig. 5 institutes Show.Triangle 113 can be any one in acute triangle, obtuse triangle or right angled triangle.
Further, the cross section of protruding portion in a first direction trapezoidal 114, corresponding holding tank are dovetail groove 214; Receiving portion 21 is formed with corresponding at least two the welding surfaces 214a, 214b extended in a first direction, wherein a welding surface Weld seam S is formed between 214a and weld part 11, another welding surface 214b can block the light via weld seam S.If trapezoidal 114 be right-angled trapezium, then two welding surfaces 214a, 214b are respectively parallel to trapezoidal 114 bottom edge and bevel edge, as shown in Figure 6.Such as Fruit is common trapezoidal, then there are three welding surfaces.
Further, the chord length of the cross section of protruding portion in a first direction arched 115, arch 115 is equal to the first side The wall thickness of edge 10, corresponding holding tank are arcuate slots 215, and the inner surface of arcuate slots 215 is welding surface, as shown in Figure 7.
As an alternative embodiment, shell by sheet metal component bending tubular metal shell.
The utility model embodiment in the first edge 10 and second edge 20 being oppositely arranged by being respectively set mutually Chimeric weld part 11 and receiving portion 21 so that at least part welding surface of receiving portion 21 can stop laser beam from weld seam Through, the problem of light leakage is easy when avoiding butt welding, while may be omitted with the metal strip padded when butt welding, external form Beauty reduces material cost
Refering to Fig. 8, the utility model embodiment additionally provides a kind of battery modules comprising shell 100, cover board 200, with And be set to the battery unit 300 in the enclosure space surrounded by shell 100 and cover board 200, shell 100 be as previously described by Sheet metal component bending and tubular shell.
The shell 100 for the battery modules that the utility model embodiment provides uses foregoing shell, can effectively drop Laser beam improves the reliability of battery modules to the injury caused by battery unit 300 in low laser beam welding.
Although the present utility model has been described by reference to the preferred embodiments, but in the model for not departing from the utility model In the case of enclosing, various improvement can be carried out to it and can replace component therein with equivalent.Especially, as long as not depositing In structural conflict, items technical characteristic mentioned in the various embodiments can be combined in any way.The utility model It is not limited to specific embodiment disclosed herein, but includes all technical solutions fallen within the scope of the appended claims.

Claims (10)

1. a kind of shell for battery modules, which is characterized in that the shell includes ontology (1), is located at the ontology (1) phase To both ends first edge (10) and second edge (20), the first edge (10) and the second edge (20) are along One direction (D) extends and is joined to form accommodating cavity (C);
The first edge (10) is formed with the weld part (11) extended towards the second edge (20) by the ontology (1); The second edge (20) is provided with the receiving portion (21) for accommodating the weld part (11), the weld part (11) and the receiving Portion (21) is mutually chimeric to be arranged to form weld seam (S);
Wherein, described accommodation section (21) there is welding surface, the welding surface can be hidden close to the part of the accommodating cavity (C) Keep off the light via the weld seam (S).
2. shell according to claim 1, which is characterized in that the first edge (10) further comprises and the welding The connected recess portion (12) in portion (11), the recess portion (12) and cross section of the weld part (11) on the first direction (D) In the first stairstepping;
The second edge (20) further comprises the protrusion (22) being connected with described accommodation section (21), the protrusion (22) and institute It is in the second stairstepping to state cross section of the receiving portion (21) on the first direction (D), and first stairstepping and described the Two stairsteppings can be mutually fitted into.
3. shell according to claim 2, which is characterized in that the weld part (11) is on the first direction (D) Cross section is rectangular (111), and the thickness of rectangular (111) is less than the wall thickness of the first edge (10), the appearance Receiving portion (21) is formed with two welding surfaces (211a, 211b) for extending along the first direction (D) and intersecting, described in one of them The weld seam (S) is formed between welding surface (211a) and the weld part (11), another described welding surface (211b) can hide Keep off the light via the weld seam (S).
4. shell according to claim 1, which is characterized in that the weld part (11) is on the first direction (D) Cross section is right angled triangle (112), and the bevel edge of the right angled triangle (112) is towards the second edge (20) and by described Direction outside accommodating cavity (C) to the shell tilts upwards;
The welding surface (212) of described accommodation section (21) is the plane for the bevel edge for being parallel to the right angled triangle (112).
5. shell according to claim 1, which is characterized in that the weld part (11) for by the ontology (1) towards institute State the protruding portion that second edge (20) extends to form, at least the one of cross section of the protruding portion on the first direction (D) Section is successively decreased on the direction towards the second edge (20);
Described accommodation section (21) is holding tank, and the shape of the holding tank and the shape of the protruding portion match.
6. shell according to claim 5, which is characterized in that the protruding portion is transversal on the first direction (D) Face is (113) triangular in shape, and the corresponding holding tank is triangular groove (213);
Described accommodation section (21) is formed with corresponding two welding surfaces (213a, 213b) extended along the first direction (D), In, the weld seam (S) is formed between a welding surface (213a) and the weld part (11), another described welding surface (213b) can block the light via the weld seam (S).
7. shell according to claim 5, which is characterized in that the protruding portion is transversal on the first direction (D) Face is trapezoidal (114), and the corresponding holding tank is dovetail groove (214);Described accommodation section (21) is formed with along the first party Two welding surfaces (214a, 214b) for extending to (D) and intersecting, described two welding surfaces (214a, 214b) are set as putting down respectively Short bottom edge of the row in trapezoidal (114) and bevel edge, wherein be parallel to the welding surface (214a) on the short bottom edge with it is described The weld seam (S) is formed between weld part (11), being parallel to the welding surface (214b) of the bevel edge can block via institute State the light of weld seam (S).
8. shell according to claim 5, which is characterized in that the protruding portion is transversal on the first direction (D) Face is arched (115), and the chord length of the arch (115) is equal to the wall thickness of the first edge (10), the corresponding holding tank For arcuate slots (215).
9. according to claim 1 to 8 any one of them shell, which is characterized in that the shell is in cylinder by sheet metal component bending The metal shell of shape.
10. a kind of battery modules, including shell (100), cover board (200), and be set to by the shell (100) and the lid Battery unit (3) in the enclosure space that plate (200) surrounds, which is characterized in that the shell (100) is such as claim 1 to 9 Any one of them shell.
CN201820197208.0U 2018-02-05 2018-02-05 Shell and battery modules for battery modules Active CN207800714U (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201820197208.0U CN207800714U (en) 2018-02-05 2018-02-05 Shell and battery modules for battery modules
PCT/CN2018/081974 WO2019148644A1 (en) 2018-02-05 2018-04-04 Housing for battery module and battery module

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201820197208.0U CN207800714U (en) 2018-02-05 2018-02-05 Shell and battery modules for battery modules

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Publication Number Publication Date
CN207800714U true CN207800714U (en) 2018-08-31

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WO (1) WO2019148644A1 (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111341949A (en) * 2020-03-27 2020-06-26 湖北亿纬动力有限公司 Battery shell, battery, manufacturing method of battery and battery module
WO2020155201A1 (en) * 2019-01-30 2020-08-06 宁德时代新能源科技股份有限公司 Welding assembly and battery module
CN111752044A (en) * 2020-07-15 2020-10-09 武汉华星光电技术有限公司 Backlight module and display device
CN113597706A (en) * 2019-07-19 2021-11-02 株式会社Lg新能源 Battery module and battery pack including the same
CN113632303A (en) * 2019-10-10 2021-11-09 株式会社Lg新能源 Battery module and battery pack including the same
WO2022247177A1 (en) * 2021-05-26 2022-12-01 惠州亿纬锂能股份有限公司 Battery casing and lithium battery
WO2023179124A1 (en) * 2022-03-22 2023-09-28 宁德新能源科技有限公司 Battery shell, battery and electronic apparatus
WO2023201920A1 (en) * 2022-04-22 2023-10-26 惠州亿纬锂能股份有限公司 Battery shell and battery

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JPH10269999A (en) * 1997-03-24 1998-10-09 Sony Corp Square battery
JP6124175B2 (en) * 2013-02-20 2017-05-10 株式会社Gsユアサ Electricity storage element
JP6226413B2 (en) * 2013-02-20 2017-11-08 株式会社Gsユアサ Storage element and method for manufacturing lid plate
CN203674281U (en) * 2013-11-29 2014-06-25 武汉中原长江科技发展有限公司 Lithium battery cover plate

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020155201A1 (en) * 2019-01-30 2020-08-06 宁德时代新能源科技股份有限公司 Welding assembly and battery module
CN113597706A (en) * 2019-07-19 2021-11-02 株式会社Lg新能源 Battery module and battery pack including the same
EP3916893A4 (en) * 2019-07-19 2022-04-20 LG Energy Solution, Ltd. Battery module and battery pack including same
CN113632303A (en) * 2019-10-10 2021-11-09 株式会社Lg新能源 Battery module and battery pack including the same
CN111341949A (en) * 2020-03-27 2020-06-26 湖北亿纬动力有限公司 Battery shell, battery, manufacturing method of battery and battery module
CN111752044A (en) * 2020-07-15 2020-10-09 武汉华星光电技术有限公司 Backlight module and display device
WO2022011778A1 (en) * 2020-07-15 2022-01-20 武汉华星光电技术有限公司 Backlight module and display device
CN111752044B (en) * 2020-07-15 2022-02-22 武汉华星光电技术有限公司 Backlight module and display device
WO2022247177A1 (en) * 2021-05-26 2022-12-01 惠州亿纬锂能股份有限公司 Battery casing and lithium battery
WO2023179124A1 (en) * 2022-03-22 2023-09-28 宁德新能源科技有限公司 Battery shell, battery and electronic apparatus
WO2023201920A1 (en) * 2022-04-22 2023-10-26 惠州亿纬锂能股份有限公司 Battery shell and battery

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