CN112736357A - Battery pack and electric automobile - Google Patents

Battery pack and electric automobile Download PDF

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Publication number
CN112736357A
CN112736357A CN201910962891.1A CN201910962891A CN112736357A CN 112736357 A CN112736357 A CN 112736357A CN 201910962891 A CN201910962891 A CN 201910962891A CN 112736357 A CN112736357 A CN 112736357A
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CN
China
Prior art keywords
battery pack
battery
piece
collision
battery module
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
Application number
CN201910962891.1A
Other languages
Chinese (zh)
Inventor
赵继阳
李伟
占莉
何剑浩
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Weirui Electric Automobile Technology Ningbo Co Ltd
Original Assignee
Weirui Electric Automobile Technology Ningbo Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Weirui Electric Automobile Technology Ningbo Co Ltd filed Critical Weirui Electric Automobile Technology Ningbo Co Ltd
Priority to CN201910962891.1A priority Critical patent/CN112736357A/en
Publication of CN112736357A publication Critical patent/CN112736357A/en
Pending legal-status Critical Current

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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
    • B60L1/00—Supplying electric power to auxiliary equipment of vehicles
    • B60L1/02—Supplying electric power to auxiliary equipment of vehicles to electric heating circuits
    • B60L1/04—Supplying electric power to auxiliary equipment of vehicles to electric heating circuits fed by the power supply line
    • 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
    • B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
    • B60L53/50—Charging stations characterised by energy-storage or power-generation means
    • B60L53/53—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
    • 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
    • Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
    • 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
    • Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10—Technologies relating to charging of electric vehicles
    • Y02T90/12—Electric charging stations

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Battery Mounting, Suspending (AREA)

Abstract

The invention relates to the technical field of power batteries, in particular to a battery pack and an electric automobile, wherein the battery pack comprises a battery pack shell, a fixing piece, a collision guide piece and a battery module; the battery module, the fixing piece and the collision guide piece are all arranged inside the battery pack shell; one end of the collision guide piece is abutted with the battery pack shell, the other end of the collision guide piece is abutted with the battery module, and the collision guide piece is used for supporting the battery pack shell and the battery module; one side of the fixing piece is respectively connected with the collision guide piece and the battery module, the other side of the fixing piece is connected with the battery shell, the collision guide piece is fixed on the fixing piece, and the collision guide piece disperses the received extrusion force on the fixing piece; the collision guide piece supports the battery pack shell and the battery module, so that the end face of the battery pack shell, which is subjected to extrusion force, is prevented from collapsing, parts in the battery pack are prevented from being deformed and piercing the battery module under the extrusion force, meanwhile, the collision guide piece transmits the extrusion force applied to the battery module to the whole battery pack, and the extrusion force is resisted through the integral strength.

Description

Battery pack and electric automobile
Technical Field
The invention relates to the technical field of power batteries, in particular to a battery pack and an electric automobile.
Background
With the popularization and development of electric vehicles and the wide-range use of electric vehicles, the problems encountered during the driving process of electric vehicles are increased gradually, the battery system is one of important components on new energy vehicles, and the quality of the battery system directly affects the use effect of the electric vehicles. In the vehicle that is equipped with the battery package, if the outside of battery package does not have effectual protection energy-absorbing structure, when the vehicle received the striking, the battery package can receive the extrusion and lead to the inside spare part of battery package to receive the extrusion force to pierce through battery module to the danger of vehicle easy emergence burning.
As is well known, all battery packs at present need to pass through relevant extrusion tests before leaving the factory, the requirement of enterprise test standards on the extrusion strength of the battery packs is high, and the prior art generally strengthens the structural design of the battery packs, such as: the thickness of a steel plate of the battery pack is increased to improve the extrusion resistance of the battery pack, or the anti-collision beam is added at the joint of the battery pack and a vehicle body to improve the anti-collision capacity of the battery pack.
Disclosure of Invention
In order to solve the technical problems, the invention provides a battery pack and an electric vehicle, wherein the extrusion force applied to a battery module is uniformly transmitted to the whole battery pack through a collision guide piece, the extrusion force is resisted through the integral strength, the end face of the battery pack directly receiving the extrusion force is prevented from collapsing and deforming and losing efficacy, and parts in the battery pack are prevented from being deformed by the extrusion force to pierce through a battery core in the battery module.
The invention discloses a battery pack, comprising: the battery pack comprises a battery pack shell, a fixing piece, a collision guide piece and a battery module;
the battery module, the fixing piece and the collision guide piece are all arranged inside the battery pack shell;
one end of the collision guide piece is abutted with the battery pack shell, the other end of the collision guide piece is abutted with the battery module, and the collision guide piece is used for supporting the battery pack shell and the battery module;
one side of the fixing piece is connected with the guide collision piece and the battery module respectively, the other side of the fixing piece is connected with the battery shell body, the guide collision piece is fixed on the fixing piece, and the guide collision piece disperses the received extrusion force on the fixing piece.
Further, the battery can shell comprises a first end face and a second end face, the first end face and the second end face are oppositely arranged, and the battery module and the guide collision piece are arranged between the first end face and the second end face.
Further, lead and hit the piece and be the U type structure, lead and hit the piece and include first supporting part, second supporting part and connecting portion, connecting portion are used for connecting first supporting part with the second supporting part.
Further, the first supporting part and the second supporting part have the same structure, the first supporting part and the second supporting part are arranged in parallel, and the first supporting part and the second supporting part are respectively abutted to the battery module.
Further, the connecting portion is arranged in parallel with the first end face, and the connecting portion is abutted against the first end face.
Further, the first supporting portion, the second supporting portion and the connecting portion are integrally formed.
Further, the guide collision piece and the fixing piece are welded and fixed.
Further, the cross section of the first supporting part and the cross section of the connecting part are both in a square shape.
Further, the rigidity of the striker is less than the rigidity of the battery pack case.
The invention further protects an electric automobile, which comprises an automobile body and a battery pack arranged on the automobile body, wherein the battery pack is the battery pack as described in any one of the above.
The embodiment of the invention has the following beneficial effects:
1. the battery pack reduces the thickness of the battery pack shell, reduces the weight of the battery pack, and improves the energy density of the whole battery pack.
2. According to the battery pack, the extrusion force applied to the battery module is transmitted to the whole battery pack through the collision guide piece, and the extrusion force is resisted through the integral strength.
3. The collision guide piece can support the battery pack shell and the battery module, prevent the end face of the battery pack shell directly receiving extrusion force from collapsing and deforming and losing efficacy, and prevent parts in the battery pack from deforming and piercing through a battery core in the battery module under the extrusion force.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings used in the description of the embodiment or the prior art will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art it is also possible to derive other drawings from these drawings without inventive effort.
Fig. 1 is a schematic structural view of a battery pack according to the present invention;
FIG. 2 is a front view of the striker and retainer of the present invention;
FIG. 3 is a cross-sectional view of FIG. 2;
fig. 4 is a top view of the striker and retainer of the present invention.
Wherein the reference numerals in the figures correspond to:
1-a battery pack housing; 2-a fixing piece; 3-guiding the collision piece; 4-a battery module; 11-a first end face; 12-a second end face; 31-a first support part; 32-a second support; 33-a connecting part.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
Example 1
Referring to fig. 1 to 4, the present embodiment provides a battery pack and an electric vehicle, where the battery pack includes: the battery pack comprises a battery pack shell 1, a fixing piece 2, a collision guide piece 3 and a battery module 4;
the battery module 4, the fixing piece 2 and the collision guide piece 3 are all arranged inside the battery pack shell 1;
one end of the collision guiding piece 3 is abutted against the battery pack shell 1, the other end of the collision guiding piece 3 is abutted against the battery module 4, and the collision guiding piece 3 is used for supporting the battery pack shell 1 and the battery module 4;
one side of the fixing part 2 is respectively connected with the guide collision part 3 and the battery module 4, the other side of the fixing part 2 is connected with the battery pack shell 1, the guide collision part 3 is fixed on the fixing part 2, and the guide collision part 3 disperses the received extrusion force on the fixing part 2.
Specifically, the battery pack case 1 may have a rectangular shape, a cylindrical shape, or the like.
Preferably, the battery pack case 1 is a rectangular case.
Specifically, the fixing member 2 may have a square structure, and the battery module 4 is placed on the fixing member 2.
Specifically, a groove is formed in the fixing member 2 and used for placing the battery module 4.
Specifically, battery package casing 1 can be one end open-ended casing, mounting 2 sets up the bottom of battery package casing 1, mounting 2 with the bottom surface of battery package casing 1 laminates completely, mounting 2 is fixed on the bottom surface of battery package casing 1.
In other embodiments, the battery pack case 1 may be a case with openings at both ends, the fixing member 2 is disposed at an opening at one end of the battery pack case 1, the fixing member 2 and the battery pack case 1 may be integrally formed, that is, the fixing member 2 and the battery pack case 1 form a complete case together, and the fixing member 2 is the bottom surface of the battery pack case 1.
Specifically, when whole battery package received the extrusion, lead and hit 3 one end with a terminal surface looks butt of battery package casing 1, lead the other end that hits 3 with the terminal surface looks butt of battery module 4, lead and hit 3 can support battery package casing 1 avoids battery package casing 1 directly receives the terminal surface of extrusion force and takes place to burst and contract, takes place deformation inefficacy, has also avoided spare part in the battery package to receive extrusion force deformation and has impaled the electric core in the battery module 4.
Specifically, when the battery pack is subjected to the compression test, the compression test is generally performed in four directions of front, rear, left, and right, i.e., the left-right direction and the front-rear direction as shown in fig. 2, and in this embodiment, one of the collision guide members 3 is provided in the left-right direction as shown in fig. 2, so as to improve the collision resistance of the battery pack.
Specifically, the striker 3 mainly serves to uniformly transmit the pressing force to the fixing member 2.
Specifically, after the collision guide piece 3 is arranged, the collision resistance of the battery pack is improved, the thickness of the shell of the battery pack can be correspondingly reduced, the weight of the battery pack is reduced, and the energy density of the whole battery pack can be improved.
Preferably, the battery pack case 1 includes a first end surface 11 and a second end surface 12, the first end surface 11 and the second end surface 12 are disposed opposite to each other, and the battery module 4 and the striker 3 are disposed between the first end surface 11 and the second end surface 12.
Preferably, the striker 3 has a U-shaped structure, and the striker 3 includes a first supporting portion 31, a second supporting portion 32 and a connecting portion 33, wherein the connecting portion 33 is used for connecting the first supporting portion 31 and the second supporting portion 32.
Preferably, the first support part 31 and the second support part 32 have the same structure, the first support part 31 and the second support part 32 are arranged in parallel, and the first support part 31 and the second support part 32 are respectively abutted against the battery module 4.
Specifically, the first supporting portion 31 and the second supporting portion 32 directly support the first end surface 11 and between the battery modules 4, and the first supporting portion 31 and the second supporting portion 32 can prevent parts in the battery pack from being deformed by an extrusion force to pierce through the battery core in the battery module 4.
Preferably, the connecting portion 33 is disposed parallel to the first end surface 11, and the connecting portion 33 abuts against the first end surface 11.
Specifically, the terminal surface of connecting portion 33 with first terminal surface 11 parallel arrangement each other makes connecting portion 33 with the area of contact of first terminal surface 11 is the biggest, lead the support that hits piece 3 can be better battery package casing 1 avoids battery package casing 1 directly receives the terminal surface of extrusion force and takes place to burst, takes place deformation inefficacy.
Specifically, a gap exists between the connection portion 33 and the first end surface 11.
In other embodiments, the connection portion 33 can be completely attached to the first end surface 11.
Specifically, the first support portion 31 and the second support portion 32 are disposed at the same end of the connecting portion 33, and the lengths of the first support portion 31 and the second support portion 32 are the same; the connecting portion 33 is perpendicular to the first supporting portion 31, and the connecting portion 33 is perpendicular to the second supporting portion 32.
Preferably, the first supporting portion 31, the second supporting portion 32 and the connecting portion 33 are integrally formed to ensure that the striker 3 is uniformly stressed, and a smooth transition is required at a connection between the first supporting portion 31 and the connecting portion 33 to ensure that no relatively weak position is generated on the striker 3.
Preferably, the guide collision piece 3 is welded and fixed with the fixing piece 2, so that the extrusion force applied to the guide collision piece 3 can be uniformly transmitted to the fixing piece 2.
Specifically, when the guide collision member 3 is subjected to the extrusion force, the extrusion force applied to the guide collision member 3 can be uniformly transmitted to the fixing member 2 because the guide collision member 3 is fixedly connected with the fixing member 2.
Preferably, the collision guide member 3 is made of a high-strength steel material, and the cross section of the first supporting portion 31 and the cross section of the connecting portion 33 are both square.
Specifically, the guide collision piece 3 is formed by bending a square pipe profile.
Preferably, the rigidity of the striker 3 is less than that of the battery pack case 1, so that it is ensured that the striker 3 is deformed first, thereby protecting the battery pack case 1.
When the battery pack of the present invention is pressed, the transfer process of the pressing force is as follows: when the battery package receives the extrusion force, first terminal surface 11 with second terminal surface 12 receives the extrusion force, because lead hit piece 3 with battery module 4 is fixed to be set up first terminal surface 11 with between the second terminal surface 12, so lead hit piece 3 with battery module 4 receives the extrusion force, because lead hit piece 3 with mounting 2 welded fastening, lead and hit 3 even downward transmission of extrusion force of piece for mounting 2, mounting 2 with the bottom surface of battery package casing 1 is connected, and the extrusion force is followed mounting 2 transmits the bottom surface of battery package casing 1 again, and then evenly on whole battery package the extrusion force dispersion.
Specifically, the invention transmits the extrusion force applied to the battery module 4 to the whole battery pack through the collision guide piece 3, avoids the damage of the battery module 4 due to excessive extrusion force, resists the extrusion force through the integral strength, and solves the problem of extrusion failure of the battery pack.
The invention protects an electric automobile on the other hand, and the electric automobile comprises an automobile body and a battery pack arranged on the automobile body; have the electric automobile of battery package leads to hitting 3 through the setting and can support battery package casing 1 and battery module 4, avoids battery package casing 1 directly to receive the terminal surface of extrusion force to take place to burst and contracts, takes place to deform inefficacy, has also avoided spare part in the battery package to receive the extrusion force deformation and impale the electric core in the battery module 4, hits the extrusion force that 3 received with battery module 4 through leading simultaneously and passes to whole battery package, resists the extrusion force through holistic intensity to improve the intensity of the resistant hitting of battery package.
Example 2
This embodiment provides a battery package and electric automobile, the battery package includes: the battery pack comprises a battery pack shell 1, a fixing piece 2, a collision guide piece 3 and a battery module 4;
the battery module 4, the fixing piece 2 and the collision guide piece 3 are all arranged inside the battery pack shell 1;
one end of the collision guiding piece 3 is abutted against the battery pack shell 1, the other end of the collision guiding piece 3 is abutted against the battery module 4, and the collision guiding piece 3 is used for supporting the battery pack shell 1 and the battery module 4;
one side of the fixing part 2 is respectively connected with the guide collision part 3 and the battery module 4, the other side of the fixing part 2 is connected with the battery pack shell 1, the guide collision part 3 is fixed on the fixing part 2, and the guide collision part 3 disperses the received extrusion force on the fixing part 2.
Specifically, the battery pack case 1 may have a rectangular shape, a cylindrical shape, or the like.
Preferably, the battery pack case 1 is a rectangular case.
Specifically, the fixing member 2 may have a square structure, and the battery module 4 is placed on the fixing member 2.
Specifically, a groove is formed in the fixing member 2 and used for placing the battery module 4.
Specifically, battery package casing 1 can be one end open-ended casing, mounting 2 sets up the bottom of battery package casing 1, mounting 2 with the bottom surface of battery package casing 1 laminates completely, mounting 2 is fixed on the bottom surface of battery package casing 1.
In other embodiments, the battery pack case 1 may be a case with openings at both ends, the fixing member 2 is disposed at an opening at one end of the battery pack case 1, the fixing member 2 and the battery pack case 1 may be integrally formed, that is, the fixing member 2 and the battery pack case 1 form a complete case together, and the fixing member 2 is the bottom surface of the battery pack case 1.
Specifically, when whole battery package received the extrusion, lead and hit 3 one end with a terminal surface looks butt of battery package casing 1, lead the other end that hits 3 with the terminal surface looks butt of battery module 4, lead and hit 3 can support battery package casing 1 avoids battery package casing 1 directly receives the terminal surface of extrusion force and takes place to burst and contract, takes place deformation inefficacy, has also avoided spare part in the battery package to receive extrusion force deformation and has impaled the electric core in the battery module.
Specifically, when the battery pack is subjected to the compression test, the compression test is generally performed in four directions of compression front, rear, left, and right, that is, the left-right direction and the front-rear direction as shown in fig. 2, and in order to ensure the compression strength, the present embodiment provides one of the collision guides 3 in each of the left-right direction and the front-rear direction as shown in fig. 2, so as to improve the collision resistance of the battery pack.
Specifically, the guide collision members 3 are provided in the left-right direction and the front-rear direction as shown in fig. 2, respectively.
Specifically, the connecting portion 33 is in contact with the battery pack case 1, and the first supporting portion 31 is in contact with the battery module.
Specifically, the striker 3 mainly serves to uniformly transmit the pressing force to the fixing member 2.
Specifically, after the collision guide piece 3 is arranged, the collision resistance of the battery pack is improved, the thickness of the shell of the battery pack can be correspondingly reduced, the weight of the battery pack is reduced, and the energy density of the whole battery pack can be improved.
Preferably, the battery pack case 1 includes a first end surface 11, a second end surface 12 and a third end surface, the first end surface 11 and the second end surface 12 are disposed oppositely, the third end surface is used for connecting the first end surface 11 and the second end surface 12, and the battery module 4 and the collision guide member 3 are disposed between the first end surface 11 and the second end surface 12.
Specifically, in the left-right direction as shown in fig. 2, one end of the striker 3 is connected to the first end surface 11, and the other end is connected to the battery module 4; one end of the other of the guide lances 3 is connected to the third end surface and the other end is connected to the battery module 4 in the front-rear direction of fig. 2, and the guide lances 3 in the front-rear direction of fig. 2 support the third end surface and the battery module 4.
Preferably, the striker 3 has a U-shaped structure, and the striker 3 includes a first supporting portion 31, a second supporting portion 32 and a connecting portion 33, wherein the connecting portion 33 is used for connecting the first supporting portion 31 and the second supporting portion 32.
Preferably, the first support part 31 and the second support part 32 have the same structure, the first support part 31 and the second support part 32 are disposed in parallel with each other, and the first support part 31 and the second support part 32 are respectively connected to the battery module 4.
Specifically, in the left-right direction as shown in fig. 2, the first supporting portion 31 and the second supporting portion 32 of the collision guide member 3 are directly supported between the first end surface 11 and the battery module 4, and the first supporting portion 31 and the second supporting portion 32 can prevent components in the battery pack from being deformed by a pressing force to pierce through the battery cell in the battery module 4.
Specifically, in the front-rear direction as shown in fig. 2, the first supporting portion 31 and the second supporting portion 32 of the collision guide member 3 are directly supported between the third end surface and the battery module 4, and the first supporting portion 31 and the second supporting portion 32 can also prevent components in the battery pack from being deformed by the pressing force to pierce through the battery cell in the battery module 4.
Specifically, in the left and right direction as shown in fig. 2, the end face of the connecting portion 33 of the guide collision member 3 is parallel to the first end face 11, so that the contact area between the connecting portion 33 and the first end face 11 is the largest, and the guide collision member 3 can better support the battery pack case 1, thereby avoiding that the end face of the battery pack case 1 directly receiving the extrusion force is collapsed, and the deformation failure occurs.
Specifically, a gap exists between the connection portion 33 and the first end surface 11.
Specifically, in the front-rear direction as shown in fig. 2, the end face of the connecting portion 33 of the collision guide member 3 and the third end face are parallel to each other, so that the contact area between the connecting portion 33 and the third end face is the largest, and the collision guide member 3 can better support the battery pack case 1, thereby preventing the end face of the battery pack case 1 directly subjected to the pressing force from collapsing and deforming and failing.
Specifically, the connection portion 33 and the third end surface can be completely attached to each other.
In other embodiments, a gap exists between the connection portion 33 and the third end surface.
Specifically, the first support portion 31 and the second support portion 32 are disposed at the same end of the connecting portion 33, and the lengths of the first support portion 31 and the second support portion 32 are the same; the connecting portion 33 is disposed perpendicular to the first supporting portion 31.
Preferably, the first supporting portion 31, the second supporting portion 32 and the connecting portion 33 are integrally formed to ensure that the striker 3 is uniformly stressed, and a smooth transition is required at a connection between the first supporting portion 31 and the connecting portion 33 to ensure that no relatively weak position is generated on the striker 3.
Preferably, the guide collision piece 3 is welded and fixed with the fixing piece 2, so that the extrusion force applied to the guide collision piece 3 can be uniformly transmitted to the fixing piece 2.
Preferably, the collision guide member 3 is made of a high-strength steel material, and the cross section of the first supporting portion 31 and the cross section of the connecting portion 33 are both square.
Specifically, the guide collision piece 3 is formed by bending a square pipe profile.
Preferably, the rigidity of the striker 3 is less than that of the battery pack case 1, so that it is ensured that the striker 3 is deformed first, thereby protecting the battery pack case 1.
Although the present invention has been described by way of preferred embodiments, the present invention is not limited to the embodiments described herein, and various changes and modifications may be made without departing from the scope of the present invention.
In this document, the terms front, back, upper and lower are used to define the components in the drawings and the positions of the components relative to each other, and are used for clarity and convenience of the technical solution. It is to be understood that the use of the directional terms should not be taken to limit the scope of the claims.
The embodiments and features of the embodiments described herein above can be combined with each other without conflict.
While the invention has been described in connection with what is presently considered to be the most practical and preferred embodiment, it is to be understood that the invention is not to be limited to the disclosed embodiment, but on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.

Claims (10)

1. A battery pack is characterized by comprising a battery pack shell (1), a fixing piece (2), a collision guide piece (3) and a battery module (4);
the battery module (4), the fixing piece (2) and the collision guide piece (3) are all arranged in the battery pack shell (1);
one end of the guide collision piece (3) is abutted against the battery pack shell (1), the other end of the guide collision piece (3) is abutted against the battery module (4), and the guide collision piece (3) is used for supporting the battery pack shell (1) and the battery module (4);
one side of mounting (2) respectively with lead to hit piece (3) with battery module (4) are connected, the opposite side of mounting (2) with battery package casing (1) is connected, lead to hit piece (3) and fix on mounting (2), lead to hit the extrusion force that piece (3) will receive and disperse on mounting (2).
2. A battery pack according to claim 1, wherein the pack housing (1) comprises a first end face (11) and a second end face (12), the first end face (11) and the second end face (12) being oppositely arranged, and the battery module (4) and the striker (3) being arranged between the first end face (11) and the second end face (12).
3. The battery pack according to claim 2, wherein the striker (3) has a U-shaped structure, and the striker (3) comprises a first support portion (31), a second support portion (32), and a connecting portion (33), and the connecting portion (33) is used for connecting the first support portion (31) and the second support portion (32).
4. A battery pack according to claim 3, wherein the first support part (31) and the second support part (32) have the same structure, the first support part (31) and the second support part (32) are arranged in parallel with each other, and the first support part (31) and the second support part (32) are respectively abutted against the battery modules (4).
5. A battery pack, as claimed in claim 4, characterised in that the connecting portion (33) is arranged parallel to the first end surface (11), the connecting portion (33) abutting against the first end surface (11).
6. The battery pack according to claim 5, wherein the first support portion (31), the second support portion (32), and the connecting portion (33) are integrally formed.
7. A battery pack according to claim 6, wherein the striker (3) is welded to the fixing member (2).
8. The battery pack according to claim 7, wherein the cross section of the first support portion (31) and the cross section of the connecting portion (33) are each formed in a square shape.
9. A battery pack according to claim 1, wherein the rigidity of the striker (3) is less than the rigidity of the battery pack housing (1).
10. An electric vehicle comprising a vehicle body and a battery pack provided to the vehicle body, wherein the battery pack is the battery pack according to any one of claims 1 to 9.
CN201910962891.1A 2019-10-11 2019-10-11 Battery pack and electric automobile Pending CN112736357A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910962891.1A CN112736357A (en) 2019-10-11 2019-10-11 Battery pack and electric automobile

Applications Claiming Priority (1)

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CN201910962891.1A CN112736357A (en) 2019-10-11 2019-10-11 Battery pack and electric automobile

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013042628A1 (en) * 2011-09-22 2013-03-28 日産自動車株式会社 Battery pack supporting structure of electric vehicle
CN205050889U (en) * 2015-09-28 2016-02-24 浙江天能能源科技有限公司 Double -deck panel beating battery box
CN206225423U (en) * 2016-10-21 2017-06-06 乐视汽车（北京）有限公司 A kind of Battery case and electric automobile
CN206259407U (en) * 2016-11-28 2017-06-16 北京新能源汽车股份有限公司 Battery pack lower shell and battery pack with same
CN206332085U (en) * 2016-12-30 2017-07-14 长城汽车股份有限公司 Electrokinetic cell bag lower house and electrokinetic cell bag and electric automobile
CN208690340U (en) * 2018-08-24 2019-04-02 宁德时代新能源科技股份有限公司 A kind of battery case
CN209087957U (en) * 2018-12-29 2019-07-09 宁德时代新能源科技股份有限公司 Battery pack

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013042628A1 (en) * 2011-09-22 2013-03-28 日産自動車株式会社 Battery pack supporting structure of electric vehicle
CN205050889U (en) * 2015-09-28 2016-02-24 浙江天能能源科技有限公司 Double -deck panel beating battery box
CN206225423U (en) * 2016-10-21 2017-06-06 乐视汽车（北京）有限公司 A kind of Battery case and electric automobile
CN206259407U (en) * 2016-11-28 2017-06-16 北京新能源汽车股份有限公司 Battery pack lower shell and battery pack with same
CN206332085U (en) * 2016-12-30 2017-07-14 长城汽车股份有限公司 Electrokinetic cell bag lower house and electrokinetic cell bag and electric automobile
CN208690340U (en) * 2018-08-24 2019-04-02 宁德时代新能源科技股份有限公司 A kind of battery case
CN209087957U (en) * 2018-12-29 2019-07-09 宁德时代新能源科技股份有限公司 Battery pack

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Application publication date: 20210430