CN109920949A - Lightweight power battery cabinet - Google Patents
Lightweight power battery cabinet Download PDFInfo
- Publication number
- CN109920949A CN109920949A CN201910120394.7A CN201910120394A CN109920949A CN 109920949 A CN109920949 A CN 109920949A CN 201910120394 A CN201910120394 A CN 201910120394A CN 109920949 A CN109920949 A CN 109920949A
- Authority
- CN
- China
- Prior art keywords
- nonmetallic
- power battery
- pedestal
- battery cabinet
- aluminium chassis
- 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.)
- Granted
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Classifications
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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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- Battery Mounting, Suspending (AREA)
Abstract
The invention discloses a kind of lightweight power battery cabinets, including nonmetallic upper cover (1) and battery lower box (2), nonmetallic upper cover on battery lower box, constitutes power battery cabinet by fixing piece the cover, and battery modules (3) are fixed in power battery box body；Battery lower box includes nonmetallic pedestal (21), internal aluminium chassis (22) and external aluminium chassis (23), and nonmetallic pedestal setting is fixed on external aluminium chassis, and through fixing piece, and internal aluminium chassis setting is fixed in nonmetallic pedestal, and through fixing piece；Battery modules are fixed in nonmetallic pedestal by internal aluminium chassis；Nonmetallic upper cover and nonmetallic pedestal are made of nonmetallic materials.The present invention can effectively mitigate the weight of Battery case, and meet the machine security requirement of cabinet, solve the air-tightness problem that cabinet is bolted, capture the problem that cabinet electromagnetic shielding performance is difficult to ensure.
Description
Technical field
The present invention relates to electric automobile power battery field more particularly to a kind of lightweight power battery cabinets.
Background technique
With getting worse for energy problem, light-weight design is of great significance in electric car field.Automobile light weight
Change technology mainly includes two aspects: first is that the development and application of new material, second is that lightweight structure designs.Power battery cabinet is
The load assembly of new energy car battery, weight account for 10 % of entire battery pack or so, the lightweight of power battery cabinet
It is of great significance to the promotion of entire battery pack energy density.Traditional power Battery case mostly uses greatly the metal materials such as steel, aluminium
Material, box weight is big, at high cost, poor corrosion resistance.Currently, some Battery cases start using high strength steel, magnesium alloy etc.
Lightweighting materials, but higher cost, and poor corrosion resistance.
Cost is relatively low, mechanical property is preferable, uses temperature model as one kind for glass fiber compound material (hereinafter referred to as SMC)
Nonmetallic materials wide, that chemical corrosion resistance is good are enclosed, have obtained some applications in Battery case upper cover, it is this for entire electricity
Pond protection and the covering of sealing can be substituted for nonmetallic materials by traditional metal materials to realize Battery case lightweight.But it wants
Applied to the box structure of carrying, SMC, which must cooperatively form composite construction with metal material and just be able to satisfy the intensity of cabinet, to be wanted
It asks.Currently, also cannot achieve effective connection between this lightweight composite construction, this machine security for being both able to satisfy cabinet is wanted
It asks, and can be it is also difficult to achieve by the connection type of cabinet air-tightness and submerging test.In addition, in the prior art using nonmetallic
The electromagnetic shielding performance of the Battery case of SMC material can not be effectively ensured.
Summary of the invention
The purpose of the present invention is to provide a kind of lightweight power battery cabinets, can effectively mitigate the weight of Battery case,
And meets the machine security requirement of cabinet, solve the air-tightness problem that cabinet is bolted, capture cabinet electromagnetic shielding
The problem that performance is difficult to ensure.
The present invention is implemented as follows:
A kind of lightweight power battery cabinet, including nonmetallic upper cover and battery lower box, nonmetallic upper cover pass through fixing piece cover
It covers on battery lower box, constitutes power battery cabinet, battery modules are fixed in power battery box body；
The battery lower box includes nonmetallic pedestal, internal aluminium chassis and external aluminium chassis, and nonmetallic pedestal setting is outside
It on portion's aluminium chassis, and is fixed by fixing piece, internal aluminium chassis setting is fixed in nonmetallic pedestal, and through fixing piece；Electricity
Chi Mo group is fixed in nonmetallic pedestal by internal aluminium chassis；Nonmetallic upper cover and nonmetallic pedestal are nonmetallic materials system
At.
The nonmetallic materials are SMC material or carbon fibre reinforced composite or carbon glass mixing composite material or the Black Warrior
Rock fibre reinforced composites.
The external aluminium chassis includes bottom aluminium chassis and the side lifting lug for being welded on bottom aluminium chassis two sides, nonmetallic
The edge of pedestal is equipped with flange, and fixing piece is arranged on the flange of nonmetallic pedestal, makes nonmetallic pedestal by flange through solid
Determine part to be fixed on the lifting lug of side.
The side lifting lug is equipped with vehicle body installation through-hole, and power battery cabinet is by fixing piece through vehicle body installation through-hole
Installation is on the body of a car.
The all included sealant on flange face of all fixing pieces used in the power battery cabinet.
The external aluminium chassis and nonmetallic pedestal are equipped with the counterbore that is spirally connected, and sealing ring is equipped at the counterbore that is spirally connected.
The nonmetallic pedestal is equipped with the through-hole of assembly connector, and the side wall bonding of through-hole has the aluminium of grommet nut
Plate, the aluminium sheet construction bonding ground connection.
The power battery cabinet further includes sealing ring, sealing ring setting nonmetallic upper cover and nonmetallic pedestal it
Between.
The nonmetallic upper cover and nonmetallic pedestal are equipped with aluminium foil layer.
The mounting hole of the inside aluminium chassis is embedded with steel ring, has tapping in steel ring.
The present invention is effectively reduced Battery case by the application of nonmetallic materials SMC and the design of cabinet composite construction
Weight, and meet the machine security requirement of cabinet, passed through seawater immersion, moisture and hot ageing, salt spray test, anti-flammability, temperature
It spends impact, mechanical shock, mechanical oscillation, squeeze the multinomial verifyings such as test, and pass through addition adhesive seal circle, sticky bolt, in advance
The encapsulating methods such as nut are buried, has passed through the air-tightness and submerging test verifying of cabinet, has solved the gas that cabinet is bolted
Close property problem；In addition, cabinet SMC material is whole or aluminium foil is added in part, and bonding ground connection is constructed, captured in industry using non-
The problem that the cabinet electromagnetic shielding performance of metal material is difficult to ensure.The configuration of the present invention is simple, cost is relatively low, while can reduce mould
The cost of tool shortens the project development period, improves project development efficiency.
Detailed description of the invention
Fig. 1 is the explosive view of lightweight power battery cabinet of the present invention；
Fig. 2 is the structural schematic diagram of the nonmetallic pedestal of lightweight power battery cabinet of the present invention；
Fig. 3 is the structural schematic diagram of the inside aluminium chassis of lightweight power battery cabinet of the present invention.
In figure, 1 nonmetallic upper cover, 2 battery lower boxes, 21 nonmetallic pedestals, 210 flange, 211 through-holes, 212 aluminium sheets, 22
Internal aluminium chassis, 221 steel rings, 222 mounting holes, 23 outside aluminium chassis, 231 bottom aluminium chassis, 232 side lifting lugs, 233 vehicle bodies peace
Fill through-hole, 24 sealing rings, 3 battery modules, 4 sealing rings.
Specific embodiment
The present invention will be further explained below with reference to the attached drawings and specific examples.
Refer to attached drawing 1, a kind of lightweight power battery cabinet, including nonmetallic upper cover 1 and battery lower box 2, non-gold
Belong to upper cover 1 through fixing pieces the covers such as bolts on battery lower box 2, composition power battery cabinet, battery modules 3 are fixed on dynamic
In power Battery case.The battery lower box 2 includes nonmetallic pedestal 21, internal aluminium chassis 22 and external aluminium chassis 23, non-
Metab 21 is arranged on external aluminium chassis 23, and is fixed by fixing piece, and internal aluminium chassis 22 is arranged in nonmetallic pedestal
In 21, and fixed by fixing piece；Battery modules 3 are fixed in nonmetallic pedestal 21 by internal aluminium chassis 22；On nonmetallic
Lid 1 and nonmetallic pedestal 21 are made of nonmetallic materials, it is ensured that the lightweight of power battery cabinet.Preferably, nonmetallic upper cover 1
SMC material or carbon fibre reinforced composite or carbon glass mixing composite material or basalt fibre can be used with nonmetallic pedestal 21
The materials such as enhancing composite material are made.
Preferably, nonmetallic pedestal 21, internal aluminium chassis 22 and external aluminium chassis 23 can be linked into an integrated entity by outer bolt,
It can also be directly bonded to one by structure glue, and pass through housing environment test and machine security test verifying: including
Seawater immersion, salt spray test, anti-flammability, temperature shock, mechanical shock, mechanical oscillation, squeezes test, air-tightness at moisture and hot ageing
And submerging test, electromagnetic shielding etc..
The external aluminium chassis 23 includes bottom aluminium chassis 231 and is welded on the sides of 231 two sides of bottom aluminium chassis and hangs
The edge of ear 232, nonmetallic pedestal 21 is equipped with flange 210, and staking spiral shell is fixedly installed on the flange 210 of nonmetallic pedestal 21
The fixing pieces such as mother are fixed on nonmetallic pedestal 21 on side lifting lug 232 through fixing pieces such as rivet nuts by flange 210.?
It includes viscous in the bottom of flange 210 using structure glue that the mode of rivet nut is fixedly installed on the flange 210 of nonmetallic pedestal 21
Connected nut on flange 210 embedded nut, using the one or more of them method such as step rivet nut.
Preferably, the techniques such as machining, cast aluminium, extrusion forming can be used in the processing method of external aluminium chassis 23, nonmetallic
Pedestal 21 can be used compression molding, and the mold of composite box takes about 1,000,000 yuan hereinafter, the development cycle about 45 days, and conventional ones
Board mold take it is at least millions of, the development cycle 60-75 days, the present invention greatly reduces mold expense, and improves project development
Efficiency.
The side lifting lug 232 is equipped with vehicle body installation through-hole 233, and power battery cabinet passes through the fixing pieces such as bolt warp
Vehicle body installation through-hole 233 is installed on the body of a car, convenient for the dismounting of power battery cabinet.
The external aluminium chassis 23 and nonmetallic pedestal 21 is equipped with the counterbore that is spirally connected, and sealing ring is equipped at the counterbore that is spirally connected
24, so that external aluminium chassis 23 and nonmetallic pedestal 21 is sealed and be spirally connected, the air-tightness of power battery cabinet bottom can be reinforced, preferably
, single or double adhesive seal foam can be used in sealing ring 24.
Attached drawing 2 is referred to, the nonmetallic pedestal 21 is equipped with the through-hole 211 of assembly connector, can be used for assembling height
Press plug connector, low pressure plug connector, explosion-proof valve etc..Preferably, the side wall of the through-hole 211 can bond the aluminium with grommet nut
Plate 212, is effectively ensured the air-tightness of connector assembly, and the aluminium sheet 212 can construct bonding ground connection, high pressure is effectively ensured and patches
The local electromagnetic shielding performance of part.
The all included sealant on flange face of all fixing pieces used in the power battery cabinet, including bolt,
Outer bolt, rivet nut etc. can be further assured that the air-tightness of power battery cabinet.
The power battery cabinet further includes sealing ring 4, and the setting of sealing ring 4 is in nonmetallic upper cover 1 and nonmetallic pedestal
Between 21, bolt passes through nonmetallic upper cover 1, sealing ring 4 and nonmetallic pedestal 21 according to this and is fixed, make nonmetallic upper cover 1 with
There is preferable airtightness between battery lower box 2.
The nonmetallic upper cover 1 and nonmetallic pedestal 21 is equipped with aluminium foil layer, and the electromagnetic screen of cabinet entirety is effectively ensured
Cover performance, it is preferred that aluminium foil layer is coated in the inner surface of SMC.
Attached drawing 3 is referred to, the mounting hole 222 of the inside aluminium chassis 22 is embedded with steel ring 221, and steel ring 221 is interior sets
The sleeve nut of tapping can be used for connecting external aluminium chassis 23, nonmetallic pedestal 21 and internal aluminium chassis 22.
Present invention employs the design of SMC nonmetallic materials and cabinet composite construction, internal aluminium chassis 22 is for fixed electricity
Chi Mo group 3 and other parts, external aluminium chassis 23 pass through the optimization of more wheel constructions, emulation for fixing entire power battery cabinet
Analysis and topological optimization significantly reduce the weight of power battery cabinet, case under the premise of meeting cabinet machine security requirement
Body gross weight 24.8kg, with compared with size aluminum profile cabinet 26.6kg, weight declines about 6%, with same size cast aluminium cabinet 28.8kg
It compares, weight decline about 13% has biggish weight advantage, is conducive to the course continuation mileage for increasing electric car.Meanwhile it using
Lower-cost SMC material, it is about 1200 yuan of cabinet cost per unit, suitable with cast aluminium cabinet cost per unit, with aluminum profile cabinet
1300 yuan of cost per unit is compared, and cost decline about 7%, therefore, the cost advantage of cabinet of the present invention is larger.
The present invention between external aluminium chassis 23 and nonmetallic pedestal 21 also by being arranged on-deformable adhesive seal circle
24, the encapsulating methods such as bolt, the rivet nut of sealant are carried using flange face, are realized to the effective of entire power battery cabinet
Sealing, can pass through seawater immersion, moisture and hot ageing, salt spray test, anti-flammability, temperature shock, mechanical shock, mechanical oscillation, extruding
The multinomial verifying such as test, air-tightness and submerging test, electromagnetic shielding.The present invention passes through the connector mounting on nonmetallic pedestal 21
Through-hole 211 side wall bonding have grommet nut aluminium sheet 212, the assembly air-tightness of connector, and aluminium sheet is effectively ensured
Bonding ground connection is constructed, the local electromagnetic shielding performance of high-voltage connector is effectively ensured.
The above is merely preferred embodiments of the present invention, it is not intended to limit the protection scope of invention, it is therefore, all at this
Any modification, equivalent replacement, improvement and so within the spirit and principle of invention, should be included in protection model of the invention
Within enclosing.
Claims (10)
1. a kind of lightweight power battery cabinet, including nonmetallic upper cover (1) and battery lower box (2), nonmetallic upper cover (1) is logical
Fixing piece the cover is crossed on battery lower box (2), constitutes power battery cabinet, battery modules (3) are fixed on power battery cabinet
It is interior；
It is characterized in that: the battery lower box (2) includes nonmetallic pedestal (21), internal aluminium chassis (22) and external aluminium chassis
(23), nonmetallic pedestal (21) is arranged on external aluminium chassis (23), and is fixed by fixing piece, internal aluminium chassis (22) setting
In nonmetallic pedestal (21), and fixed by fixing piece；Battery modules (3) are fixed on nonmetallic by internal aluminium chassis (22)
In pedestal (21)；Nonmetallic upper cover (1) and nonmetallic pedestal (21) are made of nonmetallic materials.
2. lightweight power battery cabinet according to claim 1, it is characterized in that: the nonmetallic materials are SMC material
Material or carbon fibre reinforced composite or carbon glass mixing composite material or basalt fibre reinforcing composite material.
3. lightweight power battery cabinet according to claim 1, it is characterized in that: the external aluminium chassis (23) includes
Bottom aluminium chassis (231) and the side lifting lug (232) for being welded on bottom aluminium chassis (231) two sides, the side of nonmetallic pedestal (21)
Flange (210) are equipped at edge, fixing piece is set on the flange (210) of nonmetallic pedestal (21), keep nonmetallic pedestal (21) logical
Flange (210) is crossed to be fixed on side lifting lug (232) through fixing piece.
4. lightweight power battery cabinet according to claim 3, it is characterized in that: being set on the side lifting lug (232)
Have vehicle body installation through-hole (233), power battery cabinet is mounted on body of a motor car through vehicle body installation through-hole (233) by fixing piece
On.
5. lightweight power battery cabinet described according to claim 1 or 3 or 4, it is characterized in that: the power battery cabinet
Used in all fixing pieces all included sealant on flange face.
6. lightweight power battery cabinet according to claim 1, it is characterized in that: the external aluminium chassis (23) and non-
Metab (21) is equipped with the counterbore that is spirally connected, and is equipped with sealing ring (24) at the counterbore that is spirally connected.
7. lightweight power battery cabinet according to claim 1, it is characterized in that: being set on the nonmetallic pedestal (21)
There is the through-hole (211) of assembly connector, the side wall bonding of through-hole (211) has the aluminium sheet (212) of grommet nut, the aluminium sheet
(212) building bonding ground connection.
8. lightweight power battery cabinet according to claim 1, it is characterized in that: the power battery cabinet further includes
Sealing ring (4), sealing ring (4) are arranged between nonmetallic upper cover (1) and nonmetallic pedestal (21).
9. lightweight power battery cabinet according to claim 1, it is characterized in that: the nonmetallic upper cover (1) and non-
Metab (21) is equipped with aluminium foil layer (5).
10. lightweight power battery cabinet according to claim 1, it is characterized in that: the inside aluminium chassis (22)
Steel ring (221) are equipped in mounting hole (222), have tapping in steel ring (221).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910120394.7A CN109920949B (en) | 2019-02-18 | 2019-02-18 | Lightweight power battery box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910120394.7A CN109920949B (en) | 2019-02-18 | 2019-02-18 | Lightweight power battery box |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109920949A true CN109920949A (en) | 2019-06-21 |
| CN109920949B CN109920949B (en) | 2021-10-22 |
Family
ID=66961684
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910120394.7A Active CN109920949B (en) | 2019-02-18 | 2019-02-18 | Lightweight power battery box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109920949B (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110518171A (en) * | 2019-09-30 | 2019-11-29 | 江西优特汽车技术有限公司 | A kind of lightweight aluminium body structure |
| CN110571384A (en) * | 2019-09-20 | 2019-12-13 | 福建省汽车工业集团云度新能源汽车股份有限公司 | lightweight tray for battery pack |
| CN111439106A (en) * | 2020-05-08 | 2020-07-24 | 上海瓴荣材料科技有限公司 | Battery box that metal and combined material combine |
| WO2021000340A1 (en) * | 2019-07-03 | 2021-01-07 | 江苏时代新能源科技有限公司 | Battery lower box body and battery system |
| CN112803104A (en) * | 2021-01-13 | 2021-05-14 | 武汉船用电力推进装置研究所（中国船舶重工集团公司第七一二研究所） | Pressure-resistant high-volume-ratio energy battery pack and welding method thereof |
| CN114497853A (en) * | 2020-11-10 | 2022-05-13 | 一汽-大众汽车有限公司 | Battery case mounting structure of electric automobile |
| CN114759307A (en) * | 2022-03-11 | 2022-07-15 | 上海汽车集团股份有限公司 | Battery pack and box body assembly thereof |
| CN119324289A (en) * | 2024-12-19 | 2025-01-17 | 河北华曙新能源汽车科技有限公司 | Lightweight power battery box body with strong air tightness |
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| CN112803104B (en) * | 2021-01-13 | 2022-09-27 | 武汉船用电力推进装置研究所（中国船舶重工集团公司第七一二研究所） | Pressure-resistant high-volume-ratio energy battery pack and welding method thereof |
| CN112803104A (en) * | 2021-01-13 | 2021-05-14 | 武汉船用电力推进装置研究所（中国船舶重工集团公司第七一二研究所） | Pressure-resistant high-volume-ratio energy battery pack and welding method thereof |
| CN114759307A (en) * | 2022-03-11 | 2022-07-15 | 上海汽车集团股份有限公司 | Battery pack and box body assembly thereof |
| CN114759307B (en) * | 2022-03-11 | 2023-07-25 | 上海汽车集团股份有限公司 | Battery pack and box assembly thereof |
| CN119324289A (en) * | 2024-12-19 | 2025-01-17 | 河北华曙新能源汽车科技有限公司 | Lightweight power battery box body with strong air tightness |
| CN119324289B (en) * | 2024-12-19 | 2025-03-25 | 河北华曙新能源汽车科技有限公司 | A lightweight power battery box with strong airtightness |
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