CN111224036A - High-strength battery box for passenger vehicle and manufacturing method thereof - Google Patents

High-strength battery box for passenger vehicle and manufacturing method thereof Download PDF

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Publication number
CN111224036A
CN111224036A CN202010165541.5A CN202010165541A CN111224036A CN 111224036 A CN111224036 A CN 111224036A CN 202010165541 A CN202010165541 A CN 202010165541A CN 111224036 A CN111224036 A CN 111224036A
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CN
China
Prior art keywords
peripheral
side beam
battery box
water cooling
plate
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Pending
Application number
CN202010165541.5A
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Chinese (zh)
Inventor
陈波
杨小冬
郝大陆
缪震宇
余燕
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.)
Shanghai Volkswagen United Development Body Parts Co Ltd
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Shanghai Volkswagen United Development Body Parts 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 Shanghai Volkswagen United Development Body Parts Co Ltd filed Critical Shanghai Volkswagen United Development Body Parts Co Ltd
Priority to CN202010165541.5A priority Critical patent/CN111224036A/en
Publication of CN111224036A publication Critical patent/CN111224036A/en
Pending legal-status Critical Current

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    • 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
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23PMETAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P15/00Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/60Heating or cooling; Temperature control
    • H01M10/61Types of temperature control
    • H01M10/613Cooling or keeping cold
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/60Heating or cooling; Temperature control
    • H01M10/62Heating or cooling; Temperature control specially adapted for specific applications
    • H01M10/625Vehicles
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/60Heating or cooling; Temperature control
    • H01M10/65Means for temperature control structurally associated with the cells
    • H01M10/655Solid structures for heat exchange or heat conduction
    • H01M10/6554Rods or plates
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/60Heating or cooling; Temperature control
    • H01M10/65Means for temperature control structurally associated with the cells
    • H01M10/655Solid structures for heat exchange or heat conduction
    • H01M10/6556Solid parts with flow channel passages or pipes for heat exchange
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/60Heating or cooling; Temperature control
    • H01M10/65Means for temperature control structurally associated with the cells
    • H01M10/656Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
    • H01M10/6567Liquids
    • H01M10/6568Liquids characterised by flow circuits, e.g. loops, located externally to the cells or cell casings
    • 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)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Body Structure For Vehicles (AREA)
  • Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)

Abstract

The invention relates to the technical field of battery boxes, in particular to a high-strength battery box for a passenger vehicle and a manufacturing method thereof. The utility model provides a high strength battery box for passenger car, includes boundary beam, centre sill, water-cooling board, its characterized in that: the boundary beam comprises a front boundary beam, a rear boundary beam, a left boundary beam and a right boundary beam, two ends of the front boundary beam, the rear boundary beam, the left boundary beam and the right boundary beam are connected with each other to form a four-peripheral-beam structure, a bottom guard plate is connected below the four-peripheral-beam structure formed by the front boundary beam, the rear boundary beam, the left boundary beam and the right boundary beam, and a water cooling plate is arranged on the bottom guard plate; the middle parts of the left side beam and the right side beam are connected with a middle beam; the box cover is connected above a four-peripheral beam structure formed by the front edge beam, the rear edge beam, the left edge beam and the right edge beam. Compared with the prior art, the design space layout of the new energy automobile battery box body is optimized; the structures are integrated with each other, so that the overall weight is effectively reduced; the manufacturability and the welding performance are improved; the manufacturing cost of the battery box body and the cooling system is effectively reduced.

Description

High-strength battery box for passenger vehicle and manufacturing method thereof
Technical Field
The invention relates to the technical field of battery boxes, in particular to a high-strength battery box for a passenger vehicle and a manufacturing method thereof.
Background
The new energy automobile and the traditional fuel oil automobile are mainly different in power system, and the new energy automobile power system mainly comprises a three-power system, namely three-power, namely electric power driving, electric control and a battery. Since the above products generate a large amount of heat in high energy exchange or transmission and need to be cooled immediately, otherwise the components are easily damaged or the service life of each part is reduced.
The battery is the biggest in quality, volume, the value among the three electric systems at present, and the battery part cooling system mainstream of three electricity adopts components of a whole that can function independently water-cooling board/pipe and battery to pass through heat conduction glue/pad coupling, to various bottom load-carrying type of battery cooling part form, the side is not the different contact forms such as load-carrying type.
The battery box body is mainly used for bearing a battery and a cooling system, so that the current split water-cooling plate mode ensures that the design of the battery box body needs to consider the assembly space of the water-cooling plate, the layout space of the battery box body and the whole vehicle occupies a large space, the whole weight is large, and the installation cost is high after the water-cooling plate and the box body are separately manufactured. The box body bottom plate section is a section with one-way extrusion mechanical property which is weaker in the direction vertical to the extrusion direction of the section.
Disclosure of Invention
The invention provides a high-strength battery box for a passenger vehicle and a manufacturing method thereof to overcome the defects of the prior art, and the design space layout of the battery box body of the new energy automobile is optimized; the manufacturing cost of the battery box body and the cooling system is effectively reduced.
In order to realize above-mentioned purpose, design a high strength battery box for passenger car, including boundary beam, centre sill, water-cooling board, its characterized in that: the boundary beam comprises a front boundary beam, a rear boundary beam, a left boundary beam and a right boundary beam, two ends of the front boundary beam, the rear boundary beam, the left boundary beam and the right boundary beam are connected with each other to form a four-peripheral-beam structure, a bottom guard plate is connected below the four-peripheral-beam structure formed by the front boundary beam, the rear boundary beam, the left boundary beam and the right boundary beam, and a water cooling plate is arranged on the bottom guard plate; the middle parts of the left side beam and the right side beam are connected with a middle beam; the box cover is connected above a four-peripheral beam structure formed by the front edge beam, the rear edge beam, the left edge beam and the right edge beam.
The front side beam, the rear side beam and the middle beam are of a convex beam frame structure.
The left side roof beam, the right roof beam be the rectangular panel structure to the outside equipartition that is located left side roof beam, right roof beam is equipped with a plurality of protruding structures.
The convex structure is a trapezoidal frame structure.
A manufacturing method of a high-strength battery box for a passenger car comprises the following specific steps:
(1) the front edge beam, the rear edge beam, the left edge beam, the right edge beam and the middle beam are formed by adopting an extrusion process, and the box cover is formed by adopting an aluminum plate stamping process according to the type of the vehicle;
(2) the front side beam, the rear side beam, the left side beam and the right side beam are connected by adopting an arc welding process to form a four-peripheral beam structure;
(3) the water cooling plate is connected by adopting a double-layer water cooling plate formed by an aluminum extrusion process and a FSW (friction stir welding) process of plugs at two sides, and the front surface of the water cooling plate is provided with a hole for welding a water inlet nozzle and a water outlet nozzle;
(4) the water cooling plate is formed by connecting a Friction Stir Welding (FSW) process with a peripheral beam structure;
(5) the middle beam is connected with the four peripheral beam structures and the water cooling plates by adopting an arc welding process;
(6) the bottom guard plate is formed by adopting a steel plate or aluminum plate stamping process;
(7) punching a convex hull on the bottom protection plate formed by the punching process according to the position of the water cooling plate, and attaching heat insulation cotton at the convex hull to prevent the box body from directly exchanging heat with the outside;
(8) the water cooling plate is formed by connecting the bottom guard plate with a thread/FDS cold connection process;
(9) the box cover adopts a structure of coating/pasting sealant + screw thread and four peripheral beams to form a sealing connection structure.
Compared with the prior art, the design space layout of the new energy automobile battery box body is optimized; the structures are integrated with each other, so that the overall weight is effectively reduced; the manufacturability and the welding performance are improved; the manufacturing cost of the battery box body and the cooling system is effectively reduced.
Drawings
FIG. 1 is a schematic view of the structure of the case assembly of the present invention.
FIG. 2 is a front view of the case assembly structure of the present invention.
FIG. 3 is a top view of the structure of the container assembly of the present invention.
FIG. 4 is a side view of the structure of the case assembly of the present invention.
FIG. 5 is a schematic view of a four perimeter beam configuration.
FIG. 6 is a schematic diagram of a water-cooling plate structure.
FIG. 7 is a schematic view of the bottom shield structure.
Fig. 8 is a schematic view of the case cover structure.
Referring to fig. 1 to 8, 1 is a front side beam, 2 is a right side beam, 3 is a middle beam, 4 is a rear side beam, 5 is a water cooling plate, 6 is a left side beam, 7 is a convex structure, 8 is a bottom guard plate, and 9 is a box cover.
Detailed Description
The invention is further illustrated below with reference to the accompanying drawings.
As shown in fig. 1 to 8, two ends of a front edge beam 1, a rear edge beam 4, a left edge beam 6 and a right edge beam 2 are connected with each other to form a four-peripheral-beam structure, a bottom guard plate 8 is connected below the four-peripheral-beam structure formed by the front edge beam 1, the rear edge beam 4, the left edge beam 6 and the right edge beam 2, and a water cooling plate 5 is arranged on the bottom guard plate 8; the middle parts of the left side beam 6 and the right side beam 2 are connected with a middle beam 3; and a box cover 9 is connected above a four-peripheral beam structure formed by the front side beam 1, the rear side beam 4, the left side beam 6 and the right side beam 2.
The front side beam 1, the rear side beam 4 and the middle beam 3 are in a convex beam frame structure.
The left side roof beam 6, the right roof beam 2 are the rectangular panel structure to the outside equipartition that is located left side roof beam 6, right roof beam 2 is equipped with a plurality of protruding structures 7.
The projection structure 7 is a ladder frame structure.
A manufacturing method of a high-strength battery box for a passenger car comprises the following specific steps:
(1) the front edge beam, the rear edge beam, the left edge beam, the right edge beam and the middle beam are formed by adopting an extrusion process, and the box cover is formed by adopting an aluminum plate stamping process according to the type of the vehicle;
(2) the front side beam, the rear side beam, the left side beam and the right side beam are connected by adopting an arc welding process to form a four-peripheral beam structure;
(3) the water cooling plate is connected by adopting a double-layer water cooling plate formed by an aluminum extrusion process and a FSW (friction stir welding) process of plugs at two sides, and the front surface of the water cooling plate is provided with a hole for welding a water inlet nozzle and a water outlet nozzle;
(4) the water cooling plate is formed by connecting a Friction Stir Welding (FSW) process with a peripheral beam structure;
(5) the middle beam is connected with the four peripheral beam structures and the water cooling plates by adopting an arc welding process;
(6) the bottom guard plate is formed by adopting a steel plate or aluminum plate stamping process;
(7) punching a convex hull on the bottom protection plate formed by the punching process according to the position of the water cooling plate, and attaching heat insulation cotton at the convex hull to prevent the box body from directly exchanging heat with the outside;
(8) the water cooling plate is formed by connecting the bottom guard plate with a thread/FDS cold connection process;
(9) the box cover adopts a structure of coating/pasting sealant + screw thread and four peripheral beams to form a sealing connection structure.
The invention fundamentally solves the technical problems by integrating the automobile battery box body and the water cooling system. The product component comprises: case lid 9, bottom backplate 8, box: the friction stir welding device comprises peripheral beams with bottom guard plates 8FSW friction stir welding flanges, a middle water cooling plate 5 and a middle beam 3.
The box cover 9 is installed on the box body by adopting aluminum plate stamping or SMC punching as a main body and foaming sealant according to actual vehicle type budget and environmental requirements.
The bottom backplate 8 takes steel sheet or aluminum plate punching press, and material and thickness are selected according to whole car weight control and environmental requirement, and the convex closure is gone out according to the position of water-cooling plate 5, and the convex closure department pastes thermal-insulated heat preservation cotton and prevents that the box is direct to improve heat exchange efficiency with external heat exchange.
The box contains: the front side beam 1, the rear side beam 4, the left side beam 6 and the right side beam 2 of the FSW friction stir welding flange with the bottom protection plate 8 are respectively made of aluminum extruded sections, the sections and the thicknesses of the sections are adjusted according to the structural strength requirement of a product, the thickness of the welding part of the bottom flange is the same as that of the middle water cooling plate 5, and the raw materials are machined to reach the size required by a drawing and are then spliced and welded with the middle water cooling plate 5.
The water cooling plate 5 is sealed by adopting a double-layer water cooling plate of an aluminum extruded section and plugs on two sides, the water cooling plate 5 is welded with a water inlet nozzle and a water outlet nozzle in front of an open hole, the thickness of each layer can be arranged between 1mm and 3.5mm according to the structure bearing, the rib arrangement thickness of the water channel, the concentration and the flow are defined according to the size of a battery box body and the number and the layout of batteries, the transverse width can be adjusted by the size of the extrusion width and the FSW friction stir welding connection mode to be welded to obtain the required design width, and the rib arrangement in the middle of the water cooling plate 5. The water cooling plate 5 after processing is plugged by the plugs at the two sides to form a sealed runner cavity, the front surface is provided with holes and is connected with a water nozzle in an arc welding mode to form water inlets and water outlets, and the number and the diameter of the water inlets and the water outlets are arranged according to the size of a product and a water channel.
The middle beam 3 is made of aluminum extrusion or aluminum alloy stamping parts, and the size and the hole positions of the middle beam are arranged according to the installation requirements of the battery module. And after the raw materials are machined to reach the required size of a drawing, the raw materials are welded with the box body assembly in a splicing mode.
After the components or the sub-assemblies are processed/welded, FSW friction stir welding is adopted for connecting the edge beam 4 and the water-cooling plate 5 to replace traditional arc welding without flanges, arc welding is adopted for connecting corners of the four peripheral beams, arc welding or other connecting modes are adopted for connecting the middle beam 3, the water-cooling plate is integrated into a closed battery box body in the box body through the integral structure, and a heat conducting pad is arranged above a water channel area to realize a heat exchange system of the new energy automobile power battery module.
The new design of the invention has the main characteristics that:
1. the design space layout of the battery box body of the new energy automobile is optimized.
The independent installation of mainstream box water-cooling board needs to increase inside water-cooling board/pipe, and overall arrangement such as connecting pipe, installation space steps over, and the new construction is integrated integrative need not install, has saved valuable battery box inner space.
2. The manufacturing cost of the battery box body and the cooling system is effectively reduced.
After the battery box body and the water cooling plate are integrated, the installation cost of the water cooling plate alone is saved, the system cost such as the test evaluation alone is saved, the water cooling plate can replace a box body bottom plate in an integral structure, and the box body manufacturing materials are reduced.
3. The structures are integrated with each other, so that the overall weight is effectively reduced.
The total weight of two parts of mainstream box body separate design, and the partial structure function is replaced mutually with box body to new construction water-cooling board, alleviates whole package weight greatly.
4. The manufacturability and the welding performance are improved.
Traditional battery box bottom plate mainly adopts back FSW friction stir welding to guarantee airtight, and inside because structural style can't realize FSW friction stir welding, adopts the arc welding connected mode. The FSW friction stir welding process can be adopted both inside and outside the box body, and the FSW friction stir welding process has the structural advantages that the welding heat input of the FSW friction stir welding process is low, the strength weakening of the aluminum alloy after heat treatment is smaller than that of arc welding, and the performance of a welding seam is improved. Meanwhile, the integral deformation of FSW friction stir welding after more applications is far less than that of an arc welding aluminum alloy structure.
5. And (4) carrying capacity.
The main layout bottom plate bearing mode of the main flow box body is transverse or longitudinal one-way bearing, the edge beam belt of the invention realizes longitudinal and transverse staggered layout by the flange, the two-way extrusion performance is very excellent, and the overall structure performance is greatly improved. The welding seam is changed into a full butt joint structure and an integral boundary beam structure from a fillet welding seam and a back FSW, and the structural strength is greatly improved.

Claims (5)

1. The utility model provides a high strength battery box for passenger car, includes boundary beam, centre sill, water-cooling board, its characterized in that: the side beams comprise a front side beam, a rear side beam, a left side beam and a right side beam, two ends of the front side beam (1), the rear side beam (4), the left side beam (6) and the right side beam (2) are connected with each other to form a four-peripheral-beam structure, a bottom protection plate (8) is connected below the four-peripheral-beam structure formed by the front side beam (1), the rear side beam (4), the left side beam (6) and the right side beam (2), and a water cooling plate (5) is arranged on the bottom protection plate (8); the middle parts of the left side beam (6) and the right side beam (2) are connected with a middle beam (3); and a box cover (9) is connected above a four-peripheral beam structure formed by the front edge beam (1), the rear edge beam (4), the left edge beam (6) and the right edge beam (2).
2. A high-strength battery box for passenger vehicles according to claim 1, wherein: the front edge beam (1), the rear edge beam (4) and the middle beam (3) are of a convex beam frame structure.
3. A high-strength battery box for passenger vehicles according to claim 1, wherein: the left side roof beam (6), right roof beam (2) be the rectangular panel structure to the outside equipartition that is located left side roof beam (6), right roof beam (2) is equipped with a plurality of protruding structures (7).
4. A high-strength battery box for passenger cars according to claim 3, characterized in that: the convex structure (7) is a trapezoidal frame structure.
5. A manufacturing method of a high-strength battery box for a passenger vehicle is characterized in that: the specific method comprises the following steps:
(1) the front edge beam, the rear edge beam, the left edge beam, the right edge beam and the middle beam are formed by adopting an extrusion process, and the box cover is formed by adopting an aluminum plate stamping process according to the type of the vehicle;
(2) the front side beam, the rear side beam, the left side beam and the right side beam are connected by adopting an arc welding process to form a four-peripheral beam structure;
(3) the water cooling plate is connected by adopting a double-layer water cooling plate formed by an aluminum extrusion process and a FSW (friction stir welding) process of plugs at two sides, and the front surface of the water cooling plate is provided with a hole for welding a water inlet nozzle and a water outlet nozzle;
(4) the water cooling plate is formed by connecting a Friction Stir Welding (FSW) process with a peripheral beam structure;
(5) the middle beam is connected with the four peripheral beam structures and the water cooling plates by adopting an arc welding process;
(6) the bottom guard plate is formed by adopting a steel plate or aluminum plate stamping process;
(7) punching a convex hull on the bottom protection plate formed by the punching process according to the position of the water cooling plate, and attaching heat insulation cotton at the convex hull to prevent the box body from directly exchanging heat with the outside;
(8) the water cooling plate is formed by connecting the bottom guard plate with a thread/FDS cold connection process;
(9) the box cover adopts a structure of coating/pasting sealant + screw thread and four peripheral beams to form a sealing connection structure.
CN202010165541.5A 2020-03-11 2020-03-11 High-strength battery box for passenger vehicle and manufacturing method thereof Pending CN111224036A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010165541.5A CN111224036A (en) 2020-03-11 2020-03-11 High-strength battery box for passenger vehicle and manufacturing method thereof

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Application Number Priority Date Filing Date Title
CN202010165541.5A CN111224036A (en) 2020-03-11 2020-03-11 High-strength battery box for passenger vehicle and manufacturing method thereof

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112311206A (en) * 2020-11-12 2021-02-02 苏州汇川技术有限公司 Heat exchange system and frequency converter
CN113629334A (en) * 2021-08-20 2021-11-09 宁波信泰机械有限公司 Steel-aluminum hybrid battery box
CN115939630A (en) * 2022-10-26 2023-04-07 华菱安赛乐米塔尔汽车板有限公司 Battery pack, manufacturing method thereof and vehicle

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017209342A1 (en) * 2017-06-01 2018-12-06 Volkswagen Aktiengesellschaft Lower shell for a battery housing of a traction battery and traction battery
CN109461991A (en) * 2018-11-23 2019-03-12 湖南海铝汽车工业有限公司 A kind of new-energy automobile integral type installation Battery case
CN209401673U (en) * 2018-11-23 2019-09-17 湖南海铝汽车工业有限公司 A kind of unitary tray for new energy car battery cabinet
CN211507725U (en) * 2020-03-11 2020-09-15 上海大众联合发展车身配件有限公司 High-strength battery box for passenger vehicle

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017209342A1 (en) * 2017-06-01 2018-12-06 Volkswagen Aktiengesellschaft Lower shell for a battery housing of a traction battery and traction battery
CN109461991A (en) * 2018-11-23 2019-03-12 湖南海铝汽车工业有限公司 A kind of new-energy automobile integral type installation Battery case
CN209401673U (en) * 2018-11-23 2019-09-17 湖南海铝汽车工业有限公司 A kind of unitary tray for new energy car battery cabinet
CN211507725U (en) * 2020-03-11 2020-09-15 上海大众联合发展车身配件有限公司 High-strength battery box for passenger vehicle

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112311206A (en) * 2020-11-12 2021-02-02 苏州汇川技术有限公司 Heat exchange system and frequency converter
CN112311206B (en) * 2020-11-12 2022-04-26 苏州汇川技术有限公司 Heat exchange system and frequency converter
CN113629334A (en) * 2021-08-20 2021-11-09 宁波信泰机械有限公司 Steel-aluminum hybrid battery box
CN115939630A (en) * 2022-10-26 2023-04-07 华菱安赛乐米塔尔汽车板有限公司 Battery pack, manufacturing method thereof and vehicle

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