CN107742683A - A kind of battery for electric automobile case - Google Patents
A kind of battery for electric automobile case Download PDFInfo
- Publication number
- CN107742683A CN107742683A CN201710842118.2A CN201710842118A CN107742683A CN 107742683 A CN107742683 A CN 107742683A CN 201710842118 A CN201710842118 A CN 201710842118A CN 107742683 A CN107742683 A CN 107742683A
- Authority
- CN
- China
- Prior art keywords
- bottom plate
- battery
- casing
- electric automobile
- frame
- Prior art date
- Legal status (The legal status 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 status listed.)
- Pending
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
-
- 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 present invention relates to electric vehicle engineering field, and in particular to a kind of battery for electric automobile case.Battery for electric automobile case provided by the invention, including case lid and casing, casing includes bottom plate and frame made of aluminium alloy hollow chamber profile, and the lower end of frame is connected with bottom plate surrounds the accommodating chamber of a upper end open, and case lid covers in the openend of casing and seals accommodating chamber.Casing is by aluminum alloy materials extrusion forming, the density of aluminium alloy box is smaller, weight is well below Steel material casing, weight is lighter, greatly improve battery case energy density, New-energy electric vehicle distance travelled can be increased, and under same units bulking value, the intensity of aluminium section bar is better than Steel material, the autoxidation layer of aluminium has antiseptic property, reduces anti-corrosion processing charges, simultaneously because being provided with cavity inside the aluminium alloy extrusions of manufacture casing, therefore the weight under its equal volume further reduces, and can further improve battery case energy density.
Description
Technical field
The present invention relates to electric vehicle engineering field, and in particular to a kind of battery for electric automobile case.
Background technology
With energy crisis and the getting worse of environmental pollution, exploitation of the various countries to new-energy automobile is increasingly paid attention to, especially
It is that pure electric automobile has the characteristics that zero-emission, low noise, energy efficiency are high, is one of comparatively ideal energy-conserving and environment-protective vehicle,
As electrokinetic cell performance is constantly lifted, course continuation mileage, which there has been, to be significantly improved, and is widelyd popularize in European and American countries, due to it
The relatively conventional automobile of effect on environment is smaller, and its prospect is had an optimistic view of extensively.
Battery is the core component of electric automobile, due to being integrated using battery, it is necessary to which battery is attached into battery case
In, at present using metal plate material power battery box.Although sheet metal box body can meet design standard requirement, weight is too
Weight, the distance travelled of the energy density of the battery bag of influence, also influence vehicle.And the antiseptic property of metal plate is poor, and metal plate
Bending part is also easy to produce tear.And cast aluminium battery case, due to reasons such as casting flaws, the defects of easily producing stomata, pin hole.
The content of the invention
(1) technical problems to be solved by the invention are：Existing battery case is typically all to be manufactured by sheet metal component, or
Person is cast aluminium battery case, and the weight of sheet metal box body is too heavy, influences the energy density of battery bag and the distance travelled of vehicle, and cast aluminium
Battery case, due to reasons such as casting flaws, the defects of easily producing stomata, pin hole.
The purpose of one aspect of the present invention is to provide a kind of battery case that can be realized lightweight and can automatically adjust temperature.
(2) technical scheme
In order to solve the above-mentioned technical problem, the present invention provides a kind of battery for electric automobile case, including case lid and casing, institute
Stating casing includes bottom plate and frame made of aluminium alloy hollow chamber profile, and the lower end of the frame is connected with the bottom plate surrounds one
The accommodating chamber of individual upper end open, the case lid cover in the openend of the casing and seal the accommodating chamber.
Beneficial effects of the present invention：Battery for electric automobile case provided by the invention, including case lid and casing, the casing
Including bottom plate and frame made of aluminium alloy hollow chamber profile, the lower end of the frame is connected with the bottom plate surrounds a upper end
The accommodating chamber of opening, the case lid cover in the openend of the casing and seal the accommodating chamber.The casing is by aluminium
Alloy material extrusion forming, the density of aluminium alloy box is smaller, and weight is well below Steel material casing, and weight is lighter, greatly
Improve battery case energy density, by increasing capacitance it is possible to increase New-energy electric vehicle distance travelled, and under same units bulking value, aluminium profiles
The intensity of material is better than Steel material, and the autoxidation layer of aluminium has antiseptic property, reduces anti-corrosion processing charges, simultaneously because manufacture institute
State and be provided with cavity inside the aluminium alloy extrusions of casing, therefore the weight under its equal volume further reduces, and can further carry
High battery case energy density.
On the basis of above-mentioned technical proposal, the present invention can also do following improvement.
Further, the bottom plate includes polylith daughter board, and every piece of daughter board is made by aluminium alloy hollow chamber profile, polylith
The daughter board passes sequentially through agitating friction weldering welding.
Further, the bottom plate includes five pieces of daughter boards, and five pieces of daughter boards pass sequentially through agitating friction weldering and are formed by welding
The bottom plate.
Further, the bottom plate is provided with least one mounting structure beam, is equipped with every mounting structure beam
First mounting hole of multiple internal riveting countersunk nuts.
Further, the mounting structure beam and the bottom plate one extrusion forming.
Further, at least one inside support beam is additionally provided with the bottom plate.
Further, the internal support beam and the bottom plate one extrusion forming, or the internal support beam are welded on
On the bottom plate.
Further, the frame also includes two the first hangers and two the second hangers, two first hangers and
Two second hangers are symmetrically set in the both sides of the frame, and two first hangers and two second hangers
On be equipped with lifting hole(eyelet).
Further, first hanger and the second hanger are the aluminium pipe sleeve and the side made of aluminium pipe sleeve
Frame one extrusion forming.
Further, the upper end of the frame turns down to form flange laterally, and the flange is provided with multiple inside
Rivet the second mounting hole of steel facing.
Brief description of the drawings
The advantages of above-mentioned and/or additional aspect of the invention, will be apparent in the description from combination accompanying drawings below to embodiment
Be readily appreciated that, wherein：
Fig. 1 is the structural representation of casing described in the embodiment of the present invention；
Fig. 2 is the structural representation of bottom plate described in the embodiment of the present invention；
Fig. 3 is the structural representation of frame described in the embodiment of the present invention；
Fig. 4 is Fig. 3 A portions enlarged drawing；
Fig. 5 is casing rearview described in the embodiment of the present invention；
Fig. 6 is the sectional view of the bottom plate.
Corresponding relations of the wherein Fig. 1 into Fig. 6 between reference and component names be：
1st, casing, 11, bottom plate, 111, daughter board, 112, mounting structure beam, the 113, first mounting hole, 114, internal support beam,
12nd, frame, the 121, first hanger, the 122, second hanger, the 123, the 3rd hanger, 124, lifting hole(eyelet), 125, flange, the 126, second peace
Fill hole.
Embodiment
It is below in conjunction with the accompanying drawings and specific real in order to be more clearly understood that the above objects, features and advantages of the present invention
Mode is applied the present invention is further described in detail.It should be noted that in the case where not conflicting, the implementation of the application
Feature in example and embodiment can be mutually combined.
As shown in Figures 1 to 6, the present invention provides a kind of battery for electric automobile case, including case lid and casing 1, the case
Body 1 includes bottom plate 11 and frame 12, the lower end of the frame 12 made of aluminium alloy hollow chamber profile and is connected with the bottom plate 11
The accommodating chamber of a upper end open is surrounded, the case lid covers in the openend of the casing 1 and seals the accommodating chamber.
Battery for electric automobile case provided by the invention, including case lid and casing 1, the casing 1 include empty by aluminium alloy
Bottom plate 11 made of lumen type material and frame 12.What it is due to the casing 1 is by aluminum alloy materials extrusion forming, aluminium alloy box
1 density is smaller, and for weight well below Steel material casing 1, weight is lighter, greatly improves battery case energy density, Neng Gouzeng
Add New-energy electric vehicle distance travelled, and under same units bulking value, the intensity of aluminium section bar is better than Steel material, aluminium from
Body oxide layer has antiseptic property, reduces anti-corrosion processing charges, is provided with simultaneously because manufacturing inside the aluminium alloy extrusions of the casing 1
Cavity, therefore the weight under its equal volume further reduces, and can further improve battery case energy density, while the present invention
The casing 1 of offer is simple in construction, facilitates fabrication and installation, i.e., can mitigate product weight, and do not influence product structure intensity.
As depicted in figs. 1 and 2, the bottom plate 11 includes multiple daughter boards 111, and every piece of daughter board 111 is empty by aluminium alloy
Lumen type material is made, and daughter board 111 described in polylith passes sequentially through agitating friction weldering welding, because polylith daughter board 111 is by aluminium alloy
Made of hollow chamber profile, i.e., the hollow cavity that is internally formed in the aluminium alloy extrusions, the so bottom under equal volume
The weight of plate 11 well below Steel material section bar, will drastically increase the energy density of battery case, by increasing capacitance it is possible to increase while aluminium closes
The structural strength of metal type material is more preferable, can either mitigate the weight of product, and and can enough ensures the structural strength of product.
Preferably, as depicted in figs. 1 and 2, the daughter board 111 is provided with five, and five daughter boards 111 pass sequentially through stirring
Friction welding (FW) is formed by welding the bottom plate 11, to meet the use demand of casing 1, it is necessary to which explanation, forms institute in this application
The quantity of daughter board 111 for stating bottom plate 11 is not limited solely to five or four, three or six etc., it is antipruritic can be real
Aluminium alloy hollow chamber profile manufacture floor is used to reduce the weight of bottom plate 11 in existing the application, it is ensured that the purpose of the structural strength of casing 1,
The design philosophy of the present invention just can be also realized, protection scope of the present invention should be belonged to.
As shown in figure 1, the bottom plate 11 is provided with least one mounting structure beam 112, every mounting structure beam 112
On be equipped with the first mounting holes 113 of multiple internal riveting countersunk nuts.Tied specifically, the bottom plate 11 is provided with a plurality of installation
Structure beam 112, is equipped with multiple first mounting holes 113 on every mounting structure beam 112, riveting in first mounting hole 113
Countersunk nut is connected to, by the countersunk nut of riveting in the first mounting hole 113 come the battery mould in self-contained battery case internal box 1
Group, battery modules are fixed in the accommodating chamber of battery box body 1 by the cooperation of countersunk nut and screw rod, its structural strength is more
Good easy to assembly, operation is simpler.
Preferably, as shown in Fig. 2 being equipped with a mounting structure beam 112, i.e., five pieces on each daughter board 111
Be equipped with a mounting structure beam 112 on the daughter board 111, the mounting structure beam 112 and by aluminium alloy hollow chamber profile with
The 111 integral extrusion forming of daughter board, the structural strength of the daughter board 111 and mounting structure beam 112 of integral extrusion forming is more preferable,
The defects of simpler, while the antiseptic power of aluminium alloy extrusions is more preferable, and extrusion forming is not in stomata, pin hole, such as Fig. 5
Shown, the middle part of the aluminium alloy hollow chamber profile is provided with hollow accommodating chamber, and weight is lighter under such equal volume.Such as Fig. 1 institutes
Show, at least one internal support beam 114 is additionally provided with the bottom plate 11, Battery case 1 is increased by internal support beam 114
Intensity, specifically, as shown in figure 1, the internal support beam 114 be provided with it is multiple, by setting multiple internal support beams 114 can
The intensity of the Battery case 1 is further improved, improves the ability of damping energy-absorbing, wherein the internal support beam 114 can be
With the 11 integral extrusion forming of bottom plate, the weight of bottom plate 11 can be so reduced, while 11 weight of bottom plate is reduced, is gone back
The structural strength of bottom plate 11 can be ensured, and the manufacture of the two integral extrusion forming is simpler, and composition is convenient, can reduce
Technique in body of gland manufacturing process.Certainly, internal support beam 114 described in this application can also be fixed by welding manner
On the bottom plate 11, it can equally realize the mesh for improving the structural strength of casing 1 in the application by internal support beam 114
, its objective should belong to protection scope of the present invention without departing from the design philosophy of the present invention.
Shown as shown in Figure 1, Figure 3 and Figure 4, the frame 12 also includes two the first hangers 121 and two the second hangers 122,
Two first hangers 121 are symmetrically set in the outside of the front end of frame 12, and two second hangers 122 are symmetrically set in institute
The outside of the rear end of frame 12 is stated, lifting hole(eyelet) 124 is equipped with the hanger 122 of the first hanger 121 and second, passes through the first hanger
121 and the second lifting hole(eyelet) 124 on hanger 122 casing 1 and whole battery case are lifted, it is preferable that first hanger
121 and second hanger 122 be welding aluminium tube set, can so increase the structural strength and rigidity of casing 1, wherein described
Welding aluminium tube covers and the 12 integral extrusion forming of frame.Shown as shown in Figure 1, Figure 3 and Figure 4, one end of the frame 12 is additionally provided with
Two the 3rd hangers 123, the 3rd hanger 123 is also aluminium pipe sleeve, wherein the 3rd hanger 123 is welded to the frame
On 12, by the lifting hole(eyelet) 124 on the first hanger 121, the second hanger 122 and the 3rd hanger 123 to casing 1 and whole battery
Case is lifted.
As shown in figures 1 and 3, the upper end of the frame 12 turns down to form flange 125 laterally, the flange 125
Multiple internal the second mounting holes 126 for riveting steel facing are provided with, pass through the steel facing and bolt of riveting in the second mounting hole 126
Cooperation realize the sealed connection between casing 1 and case lid, while the welding of the frame 12 in this application, bottom plate 11
Welding and the welding between frame 12 and bottom plate 11 are the butt weldings using more than 90 °, can either so reduce casing 1
Welding deformation amount, be convenient to again welding operation.
Electric automobile aluminium section bar battery case provided by the invention, including casing 1 and case lid, the casing 1 include bottom plate 11,
Frame 12, internal support beam 114；Daughter board 111 made of five pieces of aluminium alloy cavity extrudates is welded by agitating friction weldering,
Then carrying out machine adds processing to form bottom plate 11；The frame 12 is welded by CMT, and sander is carried out after the completion of welding and adds processing.
Then bottom plate 11 and frame 12 are subjected to welding welding by agitating friction weldering, after the completion of carrying out the inside support beam 114 of casing 1
And other annexes welding.Then riveting nut and steel wire set installation exercise are carried out, completes the experiment of the air-leakage test of casing 1.
In summary, battery for electric automobile case provided by the invention, including case lid and casing, the casing are included by aluminium
Bottom plate and frame made of alloy hollow chamber profile, the lower end of the frame is connected with the bottom plate surrounds the appearance of a upper end open
Receive chamber, the case lid covers in the openend of the casing and seals the accommodating chamber.The casing is by aluminum alloy materials
Extrusion forming, the density of aluminium alloy box is smaller, and for weight well below Steel material casing, weight is lighter, greatly improves electricity
Pond case energy density, by increasing capacitance it is possible to increase New-energy electric vehicle distance travelled, and under same units bulking value, the intensity of aluminium section bar
It is better than Steel material, the autoxidation layer of aluminium has antiseptic property, anti-corrosion processing charges reduced, simultaneously because manufacturing the casing
Cavity is provided with inside aluminium alloy extrusions, therefore the weight under its equal volume further reduces, and can further improve battery case
Energy density.
In the description of the invention, it is necessary to explanation, term " on ", " under ", "front", "rear", "left", "right", " interior ",
The orientation or position relationship of instructions such as " outer " are based on orientation shown in the drawings or position relationship, are for only for ease of and describe this hair
It is bright and simplify description, rather than instruction or imply that signified device or element must have specific orientation, with specific orientation
Construction and operation, therefore be not considered as limiting the invention.In addition, term " first ", " second " are only used for describing purpose,
And it is not intended that instruction or hint relative importance.
In the description of the invention, it is necessary to illustrate, unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or be integrally connected；Can
To be mechanical connection or electrical connection；Can be joined directly together, can also be indirectly connected by intermediary, Ke Yishi
The connection of two element internals.For the ordinary skill in the art, with concrete condition above-mentioned term can be understood at this
Concrete meaning in invention.In addition, in the description of the invention, unless otherwise indicated, " multiple " are meant that two or two
More than.
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
The part of the embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, ordinary skill people
The every other embodiment that member is obtained on the premise of creative work is not made, belongs to the scope of protection of the invention.
The foregoing is only presently preferred embodiments of the present invention, be not intended to limit the invention, it is all the present invention spirit and
Within principle, any modification, equivalent substitution and improvements made etc., it should be included in the scope of the protection.
Claims (10)
- A kind of 1. battery for electric automobile case, it is characterised in that：Including case lid and casing, the casing is included by aluminium alloy cavity Bottom plate made of section bar and frame, the lower end of the frame is connected with the bottom plate surrounds the accommodating chamber of a upper end open, institute Case lid is stated to cover in the openend of the casing and seal the accommodating chamber.
- 2. battery for electric automobile case according to claim 1, it is characterised in that：The bottom plate includes polylith daughter board, often Daughter board described in block is made by aluminium alloy hollow chamber profile, and daughter board described in polylith passes sequentially through agitating friction weldering welding.
- 3. battery for electric automobile case according to claim 2, it is characterised in that：The bottom plate includes five pieces of daughter boards, and five Daughter board described in block passes sequentially through agitating friction weldering and is formed by welding the bottom plate.
- 4. battery for electric automobile case according to claim 1, it is characterised in that：The bottom plate is provided with least one peace Assembling structure beam, the first mounting holes of multiple internal riveting countersunk nuts are equipped with every mounting structure beam.
- 5. battery for electric automobile case according to claim 4, it is characterised in that：The mounting structure beam and the bottom plate Integral extrusion forming.
- 6. battery for electric automobile case according to claim 1, it is characterised in that：At least one is additionally provided with the bottom plate Internal support beam.
- 7. battery for electric automobile case according to claim 6, it is characterised in that：The internal support beam and the bottom plate Integral extrusion forming, or the internal support beam are welded on the bottom plate.
- 8. battery for electric automobile case according to claim 1, it is characterised in that：The frame is also hung including two first Ear and two the second hangers, two first hangers and two second hangers are symmetrically set in the both sides of the frame, And it is equipped with lifting hole(eyelet) on two first hangers and two second hangers.
- 9. battery for electric automobile case according to claim 8, it is characterised in that：First hanger and the second hanger are equal It is the aluminium pipe sleeve and the frame one extrusion forming made of aluminium pipe sleeve.
- 10. the battery for electric automobile case according to any one of claim 1 to 9, it is characterised in that：The upper end of the frame Turnover laterally forms flange, and the flange is provided with multiple internal the second mounting holes for riveting steel facing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710842118.2A CN107742683A (en) | 2017-09-18 | 2017-09-18 | A kind of battery for electric automobile case |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710842118.2A CN107742683A (en) | 2017-09-18 | 2017-09-18 | A kind of battery for electric automobile case |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107742683A true CN107742683A (en) | 2018-02-27 |
Family
ID=61235919
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710842118.2A Pending CN107742683A (en) | 2017-09-18 | 2017-09-18 | A kind of battery for electric automobile case |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107742683A (en) |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108539078A (en) * | 2018-05-25 | 2018-09-14 | 铜陵市优车科技有限公司 | Battery case and its electric vehicle |
| CN108695466A (en) * | 2018-05-18 | 2018-10-23 | 北京普莱德新能源电池科技有限公司 | A kind of pallet and electronic box |
| CN108711595A (en) * | 2018-03-30 | 2018-10-26 | 常州卡斯特铝精密铸造科技有限公司 | Dynamic lithium battery module bottom case |
| CN109216624A (en) * | 2018-11-02 | 2019-01-15 | 湖南海铝汽车工业有限公司 | A kind of electric automobile battery box body |
| CN109216616A (en) * | 2018-09-18 | 2019-01-15 | 常州普莱德新能源电池科技有限公司 | Battery case |
| CN109461856A (en) * | 2018-10-16 | 2019-03-12 | 浙江捷汽车零部件有限公司 | T02 type aluminum battery case shell-machining process |
| CN109524591A (en) * | 2018-11-28 | 2019-03-26 | 重庆长安汽车股份有限公司 | A kind of batteries of electric automobile packet safeguard structure |
| CN109638192A (en) * | 2018-12-14 | 2019-04-16 | 蜂巢能源科技有限公司 | Mounting structure and lower case for battery pack |
| CN109935937A (en) * | 2019-01-04 | 2019-06-25 | 万向一二三股份公司 | A kind of battery modules cellular construction of adjustable thermal resistance |
| CN111312943A (en) * | 2018-12-11 | 2020-06-19 | 丰田自动车株式会社 | Battery pack frame |
| CN111922503A (en) * | 2020-07-03 | 2020-11-13 | 广东和胜新能源汽车配件有限公司 | Processing technology of battery shell |
| CN112670648A (en) * | 2019-09-30 | 2021-04-16 | 比亚迪股份有限公司 | Battery pack and electric automobile |
| US20210359366A1 (en) * | 2019-07-03 | 2021-11-18 | Jiangsu Contemporary Amperex Technology Limited | Battery lower casing and battery system |
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Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108711595A (en) * | 2018-03-30 | 2018-10-26 | 常州卡斯特铝精密铸造科技有限公司 | Dynamic lithium battery module bottom case |
| CN108695466A (en) * | 2018-05-18 | 2018-10-23 | 北京普莱德新能源电池科技有限公司 | A kind of pallet and electronic box |
| CN108539078A (en) * | 2018-05-25 | 2018-09-14 | 铜陵市优车科技有限公司 | Battery case and its electric vehicle |
| CN109216616A (en) * | 2018-09-18 | 2019-01-15 | 常州普莱德新能源电池科技有限公司 | Battery case |
| CN109461856A (en) * | 2018-10-16 | 2019-03-12 | 浙江捷汽车零部件有限公司 | T02 type aluminum battery case shell-machining process |
| CN109216624A (en) * | 2018-11-02 | 2019-01-15 | 湖南海铝汽车工业有限公司 | A kind of electric automobile battery box body |
| CN109524591A (en) * | 2018-11-28 | 2019-03-26 | 重庆长安汽车股份有限公司 | A kind of batteries of electric automobile packet safeguard structure |
| US11482749B2 (en) | 2018-12-11 | 2022-10-25 | Toyota Jidosha Kabushiki Kaisha | Stack frame |
| CN111312943A (en) * | 2018-12-11 | 2020-06-19 | 丰田自动车株式会社 | Battery pack frame |
| CN109638192A (en) * | 2018-12-14 | 2019-04-16 | 蜂巢能源科技有限公司 | Mounting structure and lower case for battery pack |
| CN109935937A (en) * | 2019-01-04 | 2019-06-25 | 万向一二三股份公司 | A kind of battery modules cellular construction of adjustable thermal resistance |
| US20210359366A1 (en) * | 2019-07-03 | 2021-11-18 | Jiangsu Contemporary Amperex Technology Limited | Battery lower casing and battery system |
| US11699827B2 (en) * | 2019-07-03 | 2023-07-11 | Jiangsu Contemporary Amperex Technology Limited | Battery lower casing and battery system |
| CN112670648A (en) * | 2019-09-30 | 2021-04-16 | 比亚迪股份有限公司 | Battery pack and electric automobile |
| CN112670648B (en) * | 2019-09-30 | 2021-11-12 | 比亚迪股份有限公司 | Battery pack and electric automobile |
| CN111922503A (en) * | 2020-07-03 | 2020-11-13 | 广东和胜新能源汽车配件有限公司 | Processing technology of battery shell |
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