KR20020040359A - a battery tray mounting structure of electric vehicle - Google Patents

a battery tray mounting structure of electric vehicle Download PDF

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Publication number
KR20020040359A
KR20020040359A KR1020000070388A KR20000070388A KR20020040359A KR 20020040359 A KR20020040359 A KR 20020040359A KR 1020000070388 A KR1020000070388 A KR 1020000070388A KR 20000070388 A KR20000070388 A KR 20000070388A KR 20020040359 A KR20020040359 A KR 20020040359A
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KR
South Korea
Prior art keywords
lower tray
tray
battery
bolt
electric vehicle
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KR1020000070388A
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Korean (ko)
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KR100391604B1 (en
Inventor
김병진
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이계안
현대자동차주식회사
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Priority to KR10-2000-0070388A priority Critical patent/KR100391604B1/en
Publication of KR20020040359A publication Critical patent/KR20020040359A/en
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Publication of KR100391604B1 publication Critical patent/KR100391604B1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L50/00—Electric propulsion with power supplied within the vehicle
    • B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
    • B60L50/60—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
    • B60L50/64—Constructional details of batteries specially adapted for electric vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K1/00—Arrangement or mounting of electrical propulsion units
    • B60K1/04—Arrangement or mounting of electrical propulsion units of the electric storage means for propulsion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L50/00—Electric propulsion with power supplied within the vehicle
    • B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
    • B60L50/60—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
    • B60L50/66—Arrangements of batteries
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K1/00—Arrangement or mounting of electrical propulsion units
    • B60K1/04—Arrangement or mounting of electrical propulsion units of the electric storage means for propulsion
    • B60K2001/0405—Arrangement or mounting of electrical propulsion units of the electric storage means for propulsion characterised by their position
    • B60K2001/0416—Arrangement in the rear part of the vehicle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2200/00—Type of vehicle
    • B60Y2200/90—Vehicles comprising electric prime movers
    • B60Y2200/91—Electric vehicles
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2220/00—Batteries for particular applications
    • H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
    • 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
    • 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
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries

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  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Power Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Battery Mounting, Suspending (AREA)
  • Body Structure For Vehicles (AREA)
  • Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)

Abstract

PURPOSE: Battery tray installation structure of an electric vehicle is provided to prevent the lowering of a lower tray due to the weight of a battery and to avoid the generation of cracks due to the concentration of a stress on a side member by dispersing the load of the battery toward a cross member. CONSTITUTION: Pillars(6) are integrally formed to the positions corresponding to cross members(7) of a lower tray(4). Through holes(6a) are formed in the pillars. A U bolt(8) is inserted to the cross member. Both legs of the U bolt are extended to the bottom of the lower tray by penetrating through the through holes of the pillars. A support plate(9) is fitted to the extended portion. Nuts(10) are connected to the legs of the U bolt at a lower portion of the support plate. Therefore, the lower tray is supported firmly and a load is dispersed to the cross members.

Description

전기자동차의 배터리트레이 장착구조{a battery tray mounting structure of electric vehicle}Battery tray mounting structure of electric vehicle

본 발명은 전기자동차의 배터리트레이 장착구조에 관한 것으로, 특히 배터리를 지지해 주는 하부트레이에 처짐이 발생하지 않고, 사이드멤버에 크랙이 발생하지 않도록 된 전기자동차의 배터리트레이 장착구조에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a battery tray mounting structure of an electric vehicle, and more particularly, to a battery tray mounting structure of an electric vehicle such that sagging does not occur in a lower tray supporting a battery and cracking does not occur in a side member.

주지된 바와 같이 전기자동차는 연료를 사용하지 않고 배터리에 충전된 전력을 이용하여 모터를 구동시켜 주행하게 되므로 무공해, 저소음이어서 세계 각국에서 실용화에 힘쓰고 있다.As is well known, the electric vehicle is driven by driving a motor using electric power charged in a battery without using fuel, so it is pollution-free and low noise, thus making efforts for practical use in various countries of the world.

그런데, 상기 전기자동차가 쉽게 실용화되지 못하는 이유중의 하나는 배터리의 크기가 크고, 무게가 많이 나간다는 것인데, 보통 배터리 하나의 무게는 약 20kg정도이며, 이러한 배터리가 차량 1대당 대략 26개 정도 장착되므로, 이들 배터리 전체의 무게는 520kg정도로 자동차의 전체 무게 중에서 상당한 부분을 차지한다.However, one of the reasons why the electric vehicle is not easily used is that the battery is large and weighs a lot. Usually, one battery weighs about 20 kg, and about 26 batteries are installed per vehicle. Therefore, the total weight of these batteries is about 520 kg, which makes up a significant portion of the total weight of the car.

이와 같이 고하중의 배터리들은 배터리트레이에 안착되고, 이 배터리트레이가 차체에 장착됨으로써 차량에 설치되어 지는데, 상기 배터리트레이는 도 1에 도시된 바와 같이 배터리(102)들의 상부를 덮는 상부트레이(103)와, 상기 배터리(102)들이 놓여지는 하부트레이(104)로 이루어져 있으며, 상부트레이(103)와 하부트레이(104)가 맞대어진 측부의 플랜지부분이 자동차의 사이드멤버(101)에 보울트(105)를 매개로 장착되는 구조로 이루어져 있다.As such, the high load batteries are mounted in the battery tray, and the battery tray is installed in the vehicle by being mounted on the vehicle body. The battery tray is an upper tray 103 covering the upper portions of the batteries 102 as shown in FIG. 1. And the lower tray 104 on which the batteries 102 are placed, and the flange portion of the side portion where the upper tray 103 and the lower tray 104 abut is bolted to the side member 101 of the vehicle. It consists of a structure that is mounted via)

따라서, 상기 하부트레이(104)가 배터리(102)들의 무게를 지지해 주게 된다.Therefore, the lower tray 104 supports the weight of the batteries 102.

그런데, 전술한 바와 같이 배터리(102)들은 매우 무거우므로 하부트레이(104)에 계속적으로 고하중이 가해지고, 더욱이 주행중 상하진동시에는 이 하중이 더욱 증가하게 되므로 결국 하부트레이(104)에 하방으로의 처짐이 발생하게 되는 문제점이 있었다.However, as described above, since the batteries 102 are very heavy, the heavy load is continuously applied to the lower tray 104, and furthermore, the load is increased further during the up and down vibration during driving, and thus the lower tray 104 is lowered. There was a problem that sag occurs.

또한 하부트레이(104)의 장착점인 상기 사이드멤버(101)의 보울트(105) 체결위치에 응력 집중으로 인한 크랙이 발생하여 차량의 강성이 저하되는 또 다른 문제점도 있었다.In addition, there is another problem in that the rigidity of the vehicle is lowered due to stress concentration at the bolt 105 fastening position of the side member 101, which is a mounting point of the lower tray 104.

이에 따라 임시 방편으로서 하부트레이(104)의 밑부분을 받쳐 주는 별도의 보강부재(106)를 설치하여 하부트레이(104)의 처짐을 방지하였으나, 이 보강부재(106)도 상기 하부트레이(104)와 마찬가지로 사이드멤버(101)에 취부되므로 사이드멤버(101)에 크랙이 발생하는 것은 방지할 수 없었다.Accordingly, by installing a separate reinforcing member 106 supporting the bottom of the lower tray 104 as a temporary means to prevent sagging of the lower tray 104, the reinforcing member 106 is also the lower tray 104 Similarly, since it is attached to the side member 101, the occurrence of a crack in the side member 101 could not be prevented.

이에 본 발명은 상기와 같은 문제점을 해결하기 위하여 발명된 것으로, 하부트레이에 처짐이 발생하지 않고, 사이드멤버에 응력이 집중되지 않아 크랙발생을 방지할 수 있도록 된 전기자동차의 배터리트레이 장착구조를 제공함에 그 목적이 있다.Accordingly, the present invention has been invented to solve the above problems, and provides a battery tray mounting structure of an electric vehicle which is capable of preventing cracks because deflection does not occur in the lower tray and stress is not concentrated in the side members. Has its purpose.

도 1은 종래 기술에 따른 전기자동차의 배터리트레이 장착구조의 단면도,1 is a cross-sectional view of the battery tray mounting structure of the electric vehicle according to the prior art,

도 2는 본 발명에 따른 전기자동차의 배터리트레이 장착구조의 분리사시도,2 is an exploded perspective view of a battery tray mounting structure of an electric vehicle according to the present invention;

도 3은 도 1의 대응도로서, 본 발명에 따른 전기자동차의 배터리트레이 장착구조의 단면도이다.3 is a cross-sectional view of the battery tray mounting structure of the electric vehicle according to the present invention, corresponding to FIG.

*도면의 주요부분에 대한 부호의 설명** Description of the symbols for the main parts of the drawings *

1 : 사이드멤버,2 : 배터리,1: side member, 2: battery,

3 : 상부트레이,4 : 하부트레이,3: upper tray, 4: lower tray,

5 : 보울트,6 : 기둥,5: bolt, 6: pillar,

6a : 관통구멍,7 : 크로스멤버,6a: through hole, 7: cross member,

8 : U-보울트,9 : 받침플레이트,8: U-bolt, 9: support plate,

10 : 너트.10: nut.

상기와 같은 목적을 달성하기 위한 본 발명은, 사이드멤버에 배터리들이 내장된 배터리트레이가 보울트를 매개로 장착되되, 크로스멤버에 U-보울트가 구비되어 이 U-보울트의 하단이 하부트레이의 밑면에 위치되는 받침플레이트와 너트로 체결되는 구조로 이루어진다.The present invention for achieving the above object, the battery tray built-in batteries in the side member is mounted via the bolt, the U-bolt is provided on the cross member, the lower end of the U-bolt on the bottom of the lower tray It is made of a structure that is fastened by the support plate and the nut is located.

따라서, U-보울트에 고정된 받침플레이트가 하부트레이를 받쳐 주므로 하부트레이에 처짐이 발생하지 않고, 배터리의 하중이 사이드멤버 뿐만 아니라 크로스멤버에도 분담되므로 사이드멤버에 응력이 집중되지 않게 되어 크랙발생이 방지된다.Therefore, since the support plate fixed to the U-bolt supports the lower tray, no deflection occurs in the lower tray, and the load of the battery is distributed to not only the side member but also the cross member, so that stress is not concentrated on the side member. Is prevented.

이하, 본 발명을 첨부된 예시도면을 참조하여 상세히 설명한다.Hereinafter, with reference to the accompanying drawings, the present invention will be described in detail.

도 2는 본 발명에 따른 전기자동차의 배터리트레이 장착구조의 분리사시도이고, 도 3은 장착상태의 단면도로서, 본 발명은 하부트레이(4)에 배터리(2)들이 규칙적으로 배열되는 상태로 탑재되고, 이 하부트레이(4)에 배터리(2)의 상부를 덮는 상부트레이(3)가 덮여지며, 이 상부트레이(3)와 상기 하부트레이(4)의 서로 맞닿은 측면의 플랜지가 차량의 사이드멤버(1)에 보울트(5)를 매개로 장착되는 구조에 있어서, 상기 하부트레이(4)중 차량의 크로스멤버(7) 대응위치에 상방으로 돌출형성된 기둥(6)들이 일체로 형성되고, 이 기둥(6)들에 관통구멍(6a)이 형성되는 한편, 상기 크로스멤버(7)에 상방으로부터 U-보울트(8)가 삽입되고, 이 U-보울트(8)의 양 레그부분이 상기 기둥(6)의 관통구멍(6a)을 연통하여 하부트레이(4)의 아래쪽까지 연장되며, 이 연장된 부분에 사각의 평평한 판재인 받침플레이트(9)가 끼워지고, 이 받침플레이트(9)의 하부에서 상기 U-보울트(8)의 레그에 너트(10)가 체결되는 구조로 이루어져 있다.Figure 2 is an exploded perspective view of the battery tray mounting structure of the electric vehicle according to the present invention, Figure 3 is a cross-sectional view of the mounting state, the present invention is mounted on the lower tray 4 in a state that the batteries 2 are arranged regularly The lower tray 4 is covered with an upper tray 3 covering the upper part of the battery 2, and the flanges on the side surfaces of the upper tray 3 and the lower tray 4 which are in contact with each other are connected to the side members of the vehicle. In the structure in which the bolt 5 is mounted to 1), pillars 6 protruding upward from the lower tray 4 corresponding to the crossmembers 7 of the vehicle are integrally formed, and the pillars ( Through holes 6a are formed in 6), U-bolts 8 are inserted into the crossmembers 7 from above, and both leg portions of the U-bolts 8 are connected to the pillars 6. Extends to the bottom of the lower tray 4 by communicating through holes 6a of the A flat plate member which is fitted the support plate 9, is made in the lower portion of the support plate 9 to the structure in which the nut 10 is fastened to the legs of the U- bolt (8).

따라서, 상기 U-보울트(8)에 고정된 받침플레이트(9)가 하부트레이(4)의 밑부분을 받쳐 주므로 하부트레이(4)가 배터리(2)의 무게에 의해 하방으로 쳐지지 않게 된다.Therefore, since the support plate 9 fixed to the U-bolt 8 supports the bottom of the lower tray 4, the lower tray 4 is not struck downward by the weight of the battery 2.

또한, 배터리(2)에 의해 하부트레이(4)에 가해지는 하중이 사이드멤버(1)쪽으로만 집중되지 않고, 상기 크로스멤버(7)에도 전달되므로 하중의 분산이 이루어져 사이드멤버(1)의 보울트(5) 체결부에 응력집중으로 인한 크랙이 발생하지 않게 된다.In addition, the load applied to the lower tray 4 by the battery 2 is not concentrated only toward the side member 1, but is also transmitted to the cross member 7, so that the load is distributed to the bolt of the side member 1. (5) Cracks due to stress concentration at the fastening part are not generated.

즉, 하부트레이(4)의 양측부만을 사이드멤버(1)에 장착하여 배터리(2)의 하중을 측방에서만 지지하던 종래에 비해, 크로스멤버(7)에 끼워진 U-보울트(8)에 고정된 받침플레이트(9)에 의해 배터리(2)의 하중을 중간부분에서도 지지해 주게 되어 하중의 분산이 이루어지도록 된 것으로서, 배터리(2)의 지지상태가 견고하고 안정적이며, 사이드멤버(1)에 크랙이 발생하지 않으므로 차량의 강성저하도 방지된다.That is, compared to the conventional case where only the both sides of the lower tray 4 are mounted on the side member 1 to support the load of the battery 2 only on the side, the U-bolt 8 fitted to the cross member 7 is fixed. The support plate 9 supports the load of the battery 2 in the middle part so that the load is distributed, and the support state of the battery 2 is firm and stable, and the side member 1 is cracked. Since this does not occur, the degradation of the vehicle is also prevented.

이상 설명한 바와 같이 본 발명에 따르면, 크로스멤버에 U-보울트를 설치하고, 이 U-보울트에 하부트레이를 받쳐주는 받침플레이트를 체결하여 하부트레이의 중간부분을 지지해 줄 수 있게 됨으로써 하부트레이에 처짐이 발생하지 않고, 사이드멤버로의 응력집중을 막아 사이드멤버에 크랙이 발생되지 않게 되며, 이로 인해 차량의 강성저하현상도 예방할 수 있게 되는 효과가 있다.As described above, according to the present invention, the U-bolt is installed on the cross member, and the support plate supporting the lower tray is fastened to the U-bolt to support the middle portion of the lower tray, thereby sagging in the lower tray. This does not occur and prevents stress concentration on the side members so that cracks do not occur on the side members, thereby preventing the stiffness degradation of the vehicle.

Claims (1)

하부트레이(4)에 배터리(2)들이 탑재되고, 이 하부트레이(4)에 상부트레이(3)가 덮이며, 이 상부트레이(3)와 하부트레이(4)의 양측 접합부분이 차량의 사이드멤버(1)에 보울트(5)를 매개로 장착되는 전기자동차의 배터리트레이 장착구조에 있어서,Batteries 2 are mounted in the lower tray 4, and the upper tray 3 is covered by the lower tray 4, and the joints of both sides of the upper tray 3 and the lower tray 4 are side members of the vehicle. In the battery tray mounting structure of the electric vehicle (1) mounted via the bolt (5), 상기 하부트레이(4)중 차량의 크로스멤버(7) 대응위치에 관통구멍(6a)이 형성된 기둥(6)들이 형성되고, 상기 크로스멤버(7)의 상부로부터 U-보울트(7)가 삽입되며, 이 U-보울트(7)의 양 레그는 기둥(6)의 관통구멍(6a)을 연통한후 하부트레이(4)의 아래쪽까지 관통연장되며, 이 U-보울트(8)의 레그 단부에 받침플레이트(9)가 끼워지고, 이 받침플레이트(9)의 하부로부터 상기 U-보울트(8)의 레그 단부에 너트(10)가 체결되는 구조로 이루어진 것을 특징으로 하는 전기자동차의 배터리트레이 장착구조.Columns 6 having through holes 6a are formed in the lower tray 4 at positions corresponding to the crossmembers 7 of the vehicle, and U-bolts 7 are inserted from the tops of the crossmembers 7. Both legs of the U-bolt 7 communicate with the through-hole 6a of the column 6 and extend through the bottom of the lower tray 4, supporting the leg ends of the U-bolt 8. The battery tray mounting structure of the electric vehicle, characterized in that the plate (9) is fitted, the nut 10 is fastened to the leg end of the U-bolt (8) from the bottom of the support plate (9).
KR10-2000-0070388A 2000-11-24 2000-11-24 a battery tray mounting structure of electric vehicle KR100391604B1 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10023038B2 (en) 2010-12-22 2018-07-17 Tesla, Inc. System for absorbing and distributing side impact energy utilizing an integrated battery pack
CN111299989A (en) * 2018-12-11 2020-06-19 珠海广通汽车有限公司邯郸分公司 Power battery bracket installation tool and system

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US4682751A (en) * 1986-03-03 1987-07-28 Clark Equipment Company Battery mounting device
JPH0371926A (en) * 1989-08-09 1991-03-27 Hitachi Metals Ltd Adjusting spacer for forming roll
US5186324A (en) * 1991-01-24 1993-02-16 Brandon Jr Darrell W Packaged hydraulic oil tank assembly and attachment kit
JP3520768B2 (en) * 1998-04-30 2004-04-19 三菱ふそうトラック・バス株式会社 Vehicle battery and air tank mounting structure

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10023038B2 (en) 2010-12-22 2018-07-17 Tesla, Inc. System for absorbing and distributing side impact energy utilizing an integrated battery pack
US10780767B2 (en) 2010-12-22 2020-09-22 Tesla, Inc. System for absorbing and distributing side impact energy utilizing an integrated battery pack
CN111299989A (en) * 2018-12-11 2020-06-19 珠海广通汽车有限公司邯郸分公司 Power battery bracket installation tool and system

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