CN107833996A - A kind of individual layer battery case for carrying bilayer cells module - Google Patents
A kind of individual layer battery case for carrying bilayer cells module Download PDFInfo
- Publication number
- CN107833996A CN107833996A CN201711037218.4A CN201711037218A CN107833996A CN 107833996 A CN107833996 A CN 107833996A CN 201711037218 A CN201711037218 A CN 201711037218A CN 107833996 A CN107833996 A CN 107833996A
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- battery case
- individual layer
- casing
- module
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- 230000002787 reinforcement Effects 0.000 claims description 4
- 230000005611 electricity Effects 0.000 abstract description 8
- 239000002994 raw material Substances 0.000 abstract description 5
- 238000009434 installation Methods 0.000 description 6
- 230000008901 benefit Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000306 component Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
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
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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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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
The present invention relates to electric vehicle engineering field, and in particular to a kind of individual layer battery case for carrying bilayer cells module.The individual layer battery case provided by the invention for carrying bilayer cells module, including case lid, module unit tray and casing, the accommodating chamber of upper end open is formed in casing, module unit tray is fixed in accommodating chamber in the horizontal direction is separated into upper and lower two layers receiving space for being used to install battery modules by accommodating chamber.The accommodating chamber in individual layer battery case is divided into by two layers of receiving space up and down by module unit tray in the application, every layer of receiving space can be used for installing battery modules, the space in individual layer battery case can more adequately and reasonably be utilized, space availability ratio is higher, can reduce the weight and volume of battery bag, improves the energy density of battery bag, in the case where not improving battery bag weight and volume, the electricity of battery case can be improved, the raw materials consumption of battery case can be reduced, it is cost-effective.
Description
Technical field
The present invention relates to electric vehicle engineering field, and in particular to a kind of individual layer battery for carrying bilayer cells module
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；Electrokinetic cell is as the unique power of pure electric automobile
The energy, is the core component of electric automobile, and the performance of electric automobile power battery will directly influence the vehicle of electric automobile
Energy and driving safety, course continuation mileage index is to assess the important indicator of electric automobile performance at present, therefore is required limited
Module as much as possible is arranged in space, to increase the electricity of electrokinetic cell system.To improve electricity, current many battery bags are adopted
With multi-layer box structure to arrange more battery modules, this scheme not only adds battery bag weight reduction battery bag energy
Density, also there is the problem of space-consuming is big, increases electronic box raw materials consumption.
The content of the invention
(1) technical problems to be solved by the invention are：Existing battery case is improves electricity, more using multi-layer box
Structure so adds battery bag weight to arrange more battery modules, reduces the energy density of battery bag, whole battery case
The low space utilization of body, the space of occupancy are larger.
(2) technical scheme
In order to solve the above-mentioned technical problem, the present invention provides a kind of individual layer battery case for carrying bilayer cells module, bag
Case lid, module unit tray and casing are included, the accommodating chamber of upper end open is formed in the casing, the case lid is covered in the casing
Openend simultaneously seals the accommodating chamber, and the module unit tray is fixed on the accommodating chamber point in the accommodating chamber in the horizontal direction
It is divided into upper and lower two layers receiving space for being used to install battery modules.
Beneficial effects of the present invention：The individual layer battery case provided by the invention for carrying bilayer cells module, including case lid,
Module unit tray and casing, the interior accommodating chamber for forming upper end open of the casing, the case lid are covered in the openend of the casing
And the accommodating chamber is sealed, the module unit tray is fixed in the accommodating chamber and is separated into the accommodating chamber in the horizontal direction
Lower two layers receiving space for being used to install battery modules.The accommodating chamber in individual layer battery case is divided by module unit tray in the application
Into upper and lower two layers of receiving space, every layer of receiving space can be used for installing battery modules, can more adequately and reasonably utilize
Space in individual layer battery case, space availability ratio is higher, and then can reduce the weight and volume of battery bag, improves battery bag
Energy density, in the case where not improving battery bag weight and volume, it is possible to increase the electricity of battery case, due to only needing individual layer
Battery case can be realized as that bilayer cells module is installed, therefore the raw materials consumption of battery case can be reduced, it is cost-effective；And
And without exclusively for the individually designed layer box body of every layer of module, structure is simpler, easily realizes.
Further, at least one longitudinal bracing being vertically arranged is equipped with the internal face of the casing two opposite side walls
Beam, one in two other side wall of the casing is provided with horizontally disposed cross-brace beam, and the module unit tray is arranged on institute
State on cross-brace beam and longitudinal support beam.
Further, the side of the module unit tray is provided with flange, and the flange is overlapped on the cross-brace beam
On, and the lower end of the module unit tray is overlapped on the longitudinal support beam.
Further, the flange is fixedly connected by bolt with the cross-brace beam；Under the module unit tray
End is fixedly connected by bolt with the longitudinal support beam.
Further, the longitudinal support beam and the cross-brace beam are welded on the madial wall of the casing.
Further, the length of the cross-brace beam is more than the length of the flange.
Further, horizontally disposed cross-brace beam is equipped with the internal face of the casing two opposite side walls, it is described
Module unit tray is arranged on the cross-brace beam.
Further, at least two longitudinal bracings being vertically arranged are equipped with the internal face of the casing two opposite side walls
Beam, the module unit tray are arranged on the cross-brace beam.
Further, the module unit tray is provided with least one of reinforcement.
Further, the upper end of the casing is provided with the first flange for turning down laterally, the lower end of the case lid be located to
Outside turns down the second flange corresponding with first flange, and first flange and the second flange are provided with one-to-one logical
Hole, bolt are connected with nut through the through hole and fix the casing and case lid.
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 decomposition texture schematic diagram for the individual layer battery case that bilayer cells module can be carried described in the embodiment of the present invention；
The entirety after the individual layer battery case installation battery modules of bilayer cells module can be carried described in Fig. 2 embodiment of the present invention
Structural representation；
Fig. 3 is point after the individual layer battery case installation battery modules that bilayer cells module can be carried described in the embodiment of the present invention
Solution structure schematic diagram；
Fig. 4 is the overall structure signal for the individual layer battery case that bilayer cells module can be carried described in the embodiment of the present invention
Figure.
Corresponding relations of the wherein Fig. 1 into Fig. 4 between reference and component names be：
1, case lid, the 11, second flange, 2, casing, 21, accommodating chamber, 22, module unit tray, 221, flange, 222, strengthen
Muscle, 23, longitudinal support beam, 24, cross-brace beam, the 25, first flange, 251, through hole, 3, battery modules.
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 depicted in figs. 1 and 2, the present invention provides a kind of individual layer battery case for carrying bilayer cells module, including case lid
1st, module unit tray 22 and casing 2, the interior accommodating chamber 21 for forming upper end open of the casing 2, the case lid 1 are covered in the casing
2 openend simultaneously seals the accommodating chamber 21, and the module unit tray 22 is fixed on institute in the accommodating chamber 21 in the horizontal direction
State accommodating chamber 21 and be separated into upper and lower two layers receiving space for being used to install battery modules 3.
The individual layer battery case provided by the invention for carrying bilayer cells module, including case lid 1, module unit tray 22 and casing
2, the interior accommodating chamber 21 for forming upper end open of the casing 2, the case lid 1 covers in the openend of the casing 2 and seals institute
Accommodating chamber 21 is stated, the module unit tray 22 is fixed in the accommodating chamber 21 and is separated into the accommodating chamber 21 in the horizontal direction
Lower two layers receiving space for being used to install battery modules 3.By module unit tray 22 by the receiving in individual layer battery case in the application
Chamber 21 is divided into two layers of receiving space up and down, and every layer of receiving space can be used for installing battery modules 3, can more fully rationally
Using the space in individual layer battery case, space availability ratio is higher, and then can reduce the weight and volume of battery bag, improves electricity
Chi Bao energy density, in the case where not improving battery bag weight and volume, it is possible to increase the electricity of battery case, due to only needing
Want the battery case of individual layer to can be realized as that bilayer cells module 3 is installed, therefore the raw materials consumption of battery case can be reduced, save
Cost；And without exclusively for the individually designed layer box body 2 of every layer of module, structure is simpler, easily realizes.
As depicted in figs. 1 and 2, at least one be vertically arranged is equipped with the internal face of the two opposite side walls of casing 2
Longitudinal support beam 23, one in described two other side wall of casing 2 is provided with horizontally disposed cross-brace beam 24, the module
Pallet 22 is arranged on the cross-brace beam 24 and longitudinal support beam 23；Such one layer of battery modules 3 are fixed on the casing 2
Bottom wall on, while module unit tray 22 is fixed on cross-brace beam 24 and longitudinal support beam 23, such upper strata receiving space
Interior battery modules 3 are arranged on the module unit tray 22, and cross-brace beam 24 and longitudinal support beam 23 are to the He of module unit tray 22
Battery modules 3 on the module unit tray 22 are supported.One cross-brace beam 24 and two groups of longitudinal support beams are set
23 entirety are supported to pallet and battery modules 3, and structure is more stable, and the weight that can be supported is bigger, it is preferable that Mei Geshe
Have and at least two longitudinal support beams 23 are equipped with the side wall of casing 2 of longitudinal support beam 23, it is as shown in Figures 1 to 4, each described
Two longitudinal support beams 23 are equipped with the side wall of casing 2, i.e., are provided with four longitudinal support beams 23 altogether, so can be further
The stability for making tray support for mould is improved, the weight that the Eng of module unit tray 22 can carry is bigger, and structure is more stable.Certainly,
The quantity of the longitudinal support beam 23 is set to be not restricted to two or three four in each side wall in this application
Individual etc., it can equally realize the purpose of the application, and its objective should belong to guarantor of the invention without departing from the design philosophy of the present invention
Protect scope.
As shown in Figures 1 to 4, the side of the module unit tray 22 is provided with flange 221, and the flange 221 is overlapped on
On the cross-brace beam 24, and the lower end of the module unit tray 22 is overlapped on the longitudinal support beam 23；Module unit tray 22 is logical
Flange 221 is crossed to be overlapped on cross-brace beam 24, while the lower end of module unit tray 22 is overlapped on the longitudinal support beam 23,
Installation and removal so for module unit tray 22 are more convenient, and structure is simpler.Preferably, the flange 221 passes through
Bolt is fixedly connected with the cross-brace beam 24；The lower end of the module unit tray 22 passes through bolt and the longitudinal support beam 23
It is fixedly connected, i.e., is corresponded on the flange 221 and cross-brace beam 24 of described module unit tray 22 and be provided with multiple mounting holes, spiral shell
Bar screws through the blackout is empty with nut, module unit tray 22 is fixedly connected with the cross-brace beam 24, so for institute
The more firm of the fixation of module unit tray 22 is stated, can prevent the module unit tray 22 from rocking to come off, improves battery mould in battery line
The stability of the installation of group 3, the fixing and security of fixation；As depicted in figs. 1 and 2, the length of the cross-brace beam 24 is big
In the length of the flange 221, wherein the length of the flange 221 is identical with the length of the module unit tray 22, i.e. institute
The length for stating cross-brace beam 24 is more than the length of the module unit tray 22, is so convenient to the flange of module unit tray 22
221 are overlapped on the cross-brace beam 24, while can also improve the bearing capacity of cross-brace beam 24.
Alternatively, the longitudinal support beam 23 and the cross-brace beam 24 are welded on the madial wall of the casing 2,
The simpler convenience of connection of so cross-brace beam 24 and longitudinal support beam 23, while structural strength is more preferable, can carry more
More weight, prevent from damaging module unit tray 22 by pressure because the weight of battery modules 3 is excessive or falling the pressure-off of module unit tray 22.Certainly,
The longitudinal support beam 23 and the cross-brace beam 24 can also be fixed on the case by other means in this application
On the inwall of body 2, such as by riveting, clamping, threaded connection, it can be equally realized in the application by module unit tray 22
Casing 2 is divided into bilevel purpose, its objective should belong to protection model of the invention without departing from the design philosophy of the present invention
Enclose.As shown in Figures 1 to 4, the module unit tray is provided with least one of reinforcement 222, and module is improved by reinforcement 222
The structural strength of pallet 22.
Longitudinal support beam 23 both also is provided with, it is necessary to illustrate it is this provided with cross-brace beam 24 in the above embodiments of the present application
Can also be that cross-brace beam 24 is only set or longitudinal support beam 23 is only set in application, such as described two opposite side walls of casing 2
Internal face on be equipped with horizontally disposed cross-brace beam 24, the module unit tray 22 is arranged on the cross-brace beam 24
On, the module unit tray 22 is supported by two cross-brace beams 24；Or the inwall of the two opposite side walls of casing 2
At least two longitudinal support beams 23 being vertically arranged are equipped with face, the module unit tray 22 is arranged on the cross-brace beam 24
On, the module unit tray 22 is supported by multiple longitudinal support beams 23, can realize and be fixed on module unit tray 22
In the accommodating chamber 21, the accommodating chamber 21 is separated into upper and lower two layers purpose for being used to install the receiving space of battery modules 3,
Its objective should belong to protection scope of the present invention without departing from the design philosophy of the present invention.
As shown in Figures 1 to 4, the upper end of the casing is provided with the second flange 25 for turning down laterally, under the case lid 1
End is on turnover second flange 11 corresponding with second flange 25 laterally, the flange 11 of the second flange 25 and second
Provided with one-to-one through hole 251, bolt is connected with nut through the through hole 251 and fixes the casing and case lid 1.
In summary, the individual layer battery case provided by the invention for carrying bilayer cells module, including case lid, module unit tray
And casing, the interior accommodating chamber for forming upper end open of the casing, the case lid cover in the openend of the casing and seal institute
Accommodating chamber is stated, the module unit tray is fixed in the accommodating chamber in the horizontal direction is separated into two layers of use up and down by the accommodating chamber
In the receiving space of installation battery modules.The accommodating chamber in individual layer battery case is divided into upper and lower two by module unit tray in the application
Layer receiving space, every layer of receiving space can be used for installing battery modules, can more adequately and reasonably utilize individual layer battery
Space in case, space availability ratio is higher, and then can reduce the weight and volume of battery bag, and the energy for improving battery bag is close
Degree, in the case where not improving battery bag weight and volume, it is possible to increase the electricity of battery case, due to only needing the battery of individual layer
Case can be realized as installing bilayer cells module, therefore can reduce the raw materials consumption of battery case, cost-effective；And need not
Exclusively for the individually designed layer box body of every layer of module, structure is simpler, easily realizes.
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. individual layer battery case for carrying bilayer cells module, it is characterised in that：Including case lid, module unit tray and casing, The accommodating chamber of upper end open is formed in the casing, the case lid covers in the openend of the casing and seals the receiving Chamber, the module unit tray is fixed in the accommodating chamber in the horizontal direction is separated into upper and lower two layers for installing by the accommodating chamber The receiving space of battery modules.
- 2. the individual layer battery case according to claim 1 for carrying bilayer cells module, it is characterised in that：The casing two At least one longitudinal support beam being vertically arranged is equipped with the internal face of opposing sidewalls, in two other side wall of the casing One is provided with horizontally disposed cross-brace beam, and the module unit tray is arranged on the cross-brace beam and longitudinal support beam.
- 3. the individual layer battery case according to claim 2 for carrying bilayer cells module, it is characterised in that：The module support The side of disk is provided with flange, and the flange is overlapped on the cross-brace beam, and the lower end overlap joint of the module unit tray In the longitudinal support beam.
- 4. the individual layer battery case according to claim 3 for carrying bilayer cells module, it is characterised in that：The flange It is fixedly connected by bolt with the cross-brace beam；The lower end of the module unit tray is consolidated by bolt and the longitudinal support beam Fixed connection.
- 5. the individual layer battery case according to claim 3 for carrying bilayer cells module, it is characterised in that：The longitudinal direction branch Support beam and the cross-brace beam are welded on the madial wall of the casing.
- 6. the individual layer battery case according to claim 3 for carrying bilayer cells module, it is characterised in that：The laterally branch The length for supportting beam is more than the length of the flange.
- 7. the individual layer battery case according to claim 1 for carrying bilayer cells module, it is characterised in that：The casing two Horizontally disposed cross-brace beam is equipped with the internal face of opposing sidewalls, the module unit tray is arranged on the cross-brace beam On.
- 8. the individual layer battery case according to claim 1 for carrying bilayer cells module, it is characterised in that：The casing two At least two longitudinal support beams being vertically arranged are equipped with the internal face of opposing sidewalls, the module unit tray is arranged on the horizontal stroke To in support beam.
- 9. the individual layer battery case for carrying bilayer cells module according to any one of claim 1 to 8, it is characterised in that： The module unit tray is provided with least one of reinforcement.
- 10. the individual layer battery case according to claim 9 for carrying bilayer cells module, it is characterised in that：The casing Upper end be provided with the first flange for turning down laterally, the lower end of the case lid is corresponding with first flange located at turning down laterally The second flange, first flange and the second flange be provided with one-to-one through hole, and bolt passes through the through hole and nut The casing and case lid are fixed in connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711037218.4A CN107833996A (en) | 2017-10-30 | 2017-10-30 | A kind of individual layer battery case for carrying bilayer cells module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711037218.4A CN107833996A (en) | 2017-10-30 | 2017-10-30 | A kind of individual layer battery case for carrying bilayer cells module |
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| Publication Number | Publication Date |
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| CN107833996A true CN107833996A (en) | 2018-03-23 |
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|---|---|---|---|
| CN201711037218.4A Pending CN107833996A (en) | 2017-10-30 | 2017-10-30 | A kind of individual layer battery case for carrying bilayer cells module |
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Cited By (9)
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| CN108767169A (en) * | 2018-08-15 | 2018-11-06 | 北京普莱德新能源电池科技有限公司 | A kind of butt-welding type aluminium alloy module unit tray and battery pack |
| CN109244293A (en) * | 2018-09-26 | 2019-01-18 | 合肥英俊新能源科技有限公司 | A kind of electri forklift power lithium battery system and its mounting means |
| CN109671890A (en) * | 2019-01-11 | 2019-04-23 | 广州纵通汽车设计有限公司 | Battery box body and battery case |
| CN111192985A (en) * | 2018-11-15 | 2020-05-22 | 宁德时代新能源科技股份有限公司 | A box and battery package for battery package |
| CN111192984A (en) * | 2018-11-15 | 2020-05-22 | 宁德时代新能源科技股份有限公司 | A box and battery package for battery package |
| CN112271392A (en) * | 2019-01-09 | 2021-01-26 | 比亚迪股份有限公司 | Power battery pack, energy storage device and electric vehicle |
| CN112896076A (en) * | 2021-03-30 | 2021-06-04 | 中国重汽集团济南动力有限公司 | Light-weight double-layer battery box with getting-on and stepping functions for commercial vehicle |
| CN115621651A (en) * | 2022-12-06 | 2023-01-17 | 惠州亿纬锂能股份有限公司 | Power battery module and power battery pack |
| US11955651B2 (en) | 2019-01-09 | 2024-04-09 | Byd Company Limited | Power battery pack and electric vehicle |
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| CN112271392A (en) * | 2019-01-09 | 2021-01-26 | 比亚迪股份有限公司 | Power battery pack, energy storage device and electric vehicle |
| CN112271391A (en) * | 2019-01-09 | 2021-01-26 | 比亚迪股份有限公司 | Power battery pack, energy storage device and electric vehicle |
| US11955651B2 (en) | 2019-01-09 | 2024-04-09 | Byd Company Limited | Power battery pack and electric vehicle |
| CN109671890A (en) * | 2019-01-11 | 2019-04-23 | 广州纵通汽车设计有限公司 | Battery box body and battery case |
| CN112896076A (en) * | 2021-03-30 | 2021-06-04 | 中国重汽集团济南动力有限公司 | Light-weight double-layer battery box with getting-on and stepping functions for commercial vehicle |
| CN115621651A (en) * | 2022-12-06 | 2023-01-17 | 惠州亿纬锂能股份有限公司 | Power battery module and power battery pack |
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Application publication date: 20180323 |