CN115566339A - Battery pack box and battery pack - Google Patents

Battery pack box and battery pack Download PDF

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Publication number
CN115566339A
CN115566339A CN202110748646.8A CN202110748646A CN115566339A CN 115566339 A CN115566339 A CN 115566339A CN 202110748646 A CN202110748646 A CN 202110748646A CN 115566339 A CN115566339 A CN 115566339A
Authority
CN
China
Prior art keywords
battery pack
layer
upper cover
battery
insulation layer
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
CN202110748646.8A
Other languages
Chinese (zh)
Inventor
王琳琦
钟毅
王勇
李博
姚银花
吉英亮
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.)
SAIC General Motors Corp Ltd
Pan Asia Technical Automotive Center Co Ltd
Original Assignee
SAIC General Motors Corp Ltd
Pan Asia Technical Automotive Center 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 SAIC General Motors Corp Ltd, Pan Asia Technical Automotive Center Co Ltd filed Critical SAIC General Motors Corp Ltd
Priority to CN202110748646.8A priority Critical patent/CN115566339A/en
Publication of CN115566339A publication Critical patent/CN115566339A/en
Pending legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
    • H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
    • H01M50/209—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for prismatic or rectangular cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/61—Types of temperature control
    • H01M10/613—Cooling or keeping cold
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
    • H01M10/625—Vehicles
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/653—Means for temperature control structurally associated with the cells characterised by electrically insulating or thermally conductive materials
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/655—Solid structures for heat exchange or heat conduction
    • H01M10/6554—Rods or plates
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/658—Means for temperature control structurally associated with the cells by thermal insulation or shielding
    • 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
    • H01M50/244—Secondary casings; Racks; Suspension devices; Carrying devices; Holders characterised by their mounting method
    • 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
    • H01M50/249—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders specially adapted for aircraft or vehicles, e.g. cars or trains
    • 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
    • H01M50/258—Modular batteries; Casings provided with means for assembling
    • 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
    • H01M50/271—Lids or covers for the racks or secondary casings
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Battery Mounting, Suspending (AREA)
  • Secondary Cells (AREA)

Abstract

The application discloses battery package box and battery package. The battery pack box body comprises a battery pack upper cover, a heat insulation layer located below the battery pack upper cover and an interception layer located below the heat insulation layer, the heat insulation layer is used for insulating the battery pack upper cover, and the interception layer is used for intercepting solid fragments towards the battery pack upper cover. According to the battery pack box body, the safety of the battery pack can be improved.

Description

Battery pack box and battery pack
Technical Field
The invention relates to the field of battery packs, in particular to a battery pack box body and a battery pack with the same.
Background
The electric automobile has great advantages in energy conservation and environmental protection, and is increasingly favored by people. With the continuous improvement of the requirement on the endurance mileage, the energy density of the battery is higher and higher, and particularly, in the popularization and application of high-energy ternary lithium batteries in recent years, safety problems caused by thermal runaway of power batteries are highly concerned by various circles. Therefore, how to design the thermal diffusion protection of the battery pack, after the thermal runaway of the battery core and the thermal diffusion are avoided, high-temperature flame ignites external articles, so that more safety problems are avoided, the thermal safety of the battery pack is improved, the personal safety of passengers is guaranteed, and the design method is a problem concerned by each power battery design engineer.
Disclosure of Invention
The invention provides a battery pack box body which can improve the safety of a battery pack.
According to one aspect of the invention, the battery pack box body comprises a battery pack upper cover, a heat insulation layer located below the battery pack upper cover and an interception layer located below the heat insulation layer, wherein the heat insulation layer is used for insulating the battery pack upper cover, and the interception layer is used for intercepting solid fragments which impact the battery pack upper cover.
According to the battery pack case provided by one aspect of the present invention, the intercepting layer is configured in a mesh shape or in a plate shape with a through-hole.
According to the battery pack case provided by one aspect of the invention, the interception layer is made of one or more of high silica glass fiber cloth, ceramic fiber and metal.
According to the battery pack case provided by one aspect of the invention, the thermal insulation layer is made of mica and/or aerogel.
According to the battery pack case set forth in one aspect of the present invention, the heat insulating layer and the intercepting layer are disposed in close proximity.
According to the battery pack box provided by one aspect of the invention, the heat insulation layer and the interception layer are arranged at the upper cover of the battery pack.
According to the battery pack case provided by one aspect of the present invention, the intercepting layer is adhered to the heat insulating layer and the heat insulating layer is adhered to the battery pack upper cover.
According to one aspect of the present invention, there is provided a battery pack case including a battery pack lower case.
The invention also relates to a battery pack having such a battery pack case. Since the battery pack case according to the present invention is used for the battery pack, the advantages as described above can be obtained.
According to the battery pack provided by one aspect of the invention, the battery pack comprises a battery cell module, and the battery cell module is located below the intercepting layer.
The beneficial effects of the invention include: can intercept the high temperature solid piece that electric core sprayed when thermal runaway through setting up the interception layer in battery package upper cover below, can prevent battery package upper cover high temperature through the insulating layer that sets up in battery package upper cover below, finally play the effect of protection battery package upper cover.
Drawings
The disclosure of the present invention is illustrated with reference to the accompanying drawings. It is to be understood that the drawings are designed solely for the purposes of illustration and not as a definition of the limits of the invention. Wherein:
fig. 1 schematically shows a part of a proposed battery pack in an exploded view according to an embodiment of the present invention.
Detailed Description
It is easily understood that according to the technical solution of the present invention, a person skilled in the art can propose various alternative structures and implementation ways without changing the spirit of the present invention. Therefore, the following detailed description and the accompanying drawings are merely illustrative of the technical aspects of the present invention, and should not be construed as limiting or restricting the technical aspects of the present invention.
The terms of orientation of up, down, left, right, front, back, top, bottom, and the like referred to or may be referred to in this specification are defined relative to the configuration shown in the drawings, and are relative terms, and thus may be changed correspondingly according to the position and the use state of the device. Therefore, these and other directional terms should not be construed as limiting terms.
An embodiment according to the present invention is shown in connection with fig. 1. The battery package has the battery package box, and the battery package box is located the most outer periphery of battery package, and electric core module holds in the battery package box, and the battery package box mainly plays and provides isolated and the effect of protection to the battery package. The battery pack box body comprises a battery pack upper cover 1, a heat insulation layer 2 positioned below the battery pack upper cover and an interception layer 3 positioned below the heat insulation layer. The battery pack case further includes a battery pack lower case 4. The heat insulation layer is used for insulating the upper cover of the battery pack, and the interception layer is used for intercepting solid fragments which impact the upper cover of the battery pack. The battery core module 5 of battery package is located the interception layer below, that is to say, when electric core thermal runaway, the interception layer is at first to be faced high temperature solid piece and thermal shock. Still be equipped with module upper cover 51 in electric core module top.
In the battery pack case according to the present invention: when the battery core is out of control thermally, high-temperature metal or nonmetal solid fragments sprayed by the battery core can be intercepted through the intercepting layers arranged on the upper cover of the battery pack and below the heat-insulating layer, so that the heat-insulating layer and the upper cover of the battery pack above the intercepting layers are protected, and the heat-insulating layer and the upper cover of the battery pack are prevented from being broken due to fragment impact; the battery pack upper cover can be subjected to heat insulation and fire prevention treatment through the heat insulation layer arranged below the battery pack upper cover, the temperature rise rate of the battery pack upper cover is delayed when high-temperature flame is sprayed out from the battery core, the battery pack upper cover is prevented from being too high in temperature and even being burnt through, and therefore safety accidents such as burning of external materials or other parts are avoided.
The battery pack may be located at the middle rear portion in the vehicle, for example, below the rear floor, and thus the battery pack upper cover may be located below the floor. Once the upper cover of the battery pack is over-heated or burnt through, the rear floor will be affected, and the rear floor will be overheated or even burnt, so it is very important to protect the upper cover of the battery pack from over-temperature and burning through. According to the invention, the heat insulation layer and the interception layer can protect the upper cover of the battery pack, so that the upper cover of the battery pack is kept at a lower temperature, and the safety of the battery pack is further improved.
The blocking layer is configured to be a net or a plate with through holes, and can block the sprayed high-temperature solid fragments when the battery cell is out of control due to heat. The interception layer can be made of a high-strength high-toughness high-temperature-resistant and fire-resistant material, for example, the interception layer is made of one or more of high silica glass fiber cloth, ceramic fiber and metal.
The insulation layer may be made of a material with a low thermal conductivity and resistant to burning, for example mica and/or aerogel.
According to an embodiment of the invention, the insulating layer and the intercepting layer are arranged in close proximity. Further, the heat insulation layer and the interception layer are mounted at the upper cover of the battery pack through pasting, for example. Illustratively, the arresting layer is adhered to the insulating layer and the insulating layer is adhered to the battery pack upper cover. That is to say, interception layer and insulating layer are compound as an organic whole, wholly adhere to the battery package upper cover, can play the effect that interception thermal runaway solid piece assaulted the battery package upper cover simultaneously and the effect of isolated temperature transmission to battery package upper cover, and protection battery package upper cover is not burnt out damaged and because of high temperature by the impact, reduces the outside temperature of battery package upper cover simultaneously, prevents that outside other objects from being ignited.
The technical scope of the present invention is not limited to the above description, and those skilled in the art can make various changes and modifications to the above-described embodiments without departing from the technical spirit of the present invention, and such changes and modifications should fall within the protective scope of the present invention.

Claims (10)

1. The battery pack box body is characterized by comprising a battery pack upper cover (1), a heat insulation layer (2) located below the battery pack upper cover (1) and an interception layer (3) located below the heat insulation layer (2), wherein the heat insulation layer (2) is used for insulating the battery pack upper cover (1), and the interception layer (3) is used for intercepting solid fragments rushing to the battery pack upper cover (1).
2. The battery pack case according to claim 1, wherein the intercepting layer is constructed in a mesh shape or in a plate shape with through-holes.
3. The battery pack case according to claim 1, wherein the intercepting layer is made of one or more of high silica glass fiber cloth, ceramic fiber, and metal.
4. The battery pack case of claim 1, wherein the thermal insulation layer is made of mica and/or aerogel.
5. The battery pack case of claim 1, wherein the insulating layer and the arresting layer are disposed in close proximity.
6. The battery pack case according to claim 1, wherein the insulation layer and the intercepting layer are installed at the battery pack upper cover.
7. The battery pack case of claim 6, wherein the arresting layer is adhered to the insulating layer and the insulating layer is adhered to the battery pack upper cover.
8. The battery pack case according to claim 1, wherein the battery pack case comprises a battery pack lower case (4).
9. A battery pack characterized in that the battery pack comprises a battery pack case according to any one of claims 1 to 8.
10. The battery pack of claim 9, comprising a cell module (5) located below the barrier layer.
CN202110748646.8A 2021-07-02 2021-07-02 Battery pack box and battery pack Pending CN115566339A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110748646.8A CN115566339A (en) 2021-07-02 2021-07-02 Battery pack box and battery pack

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110748646.8A CN115566339A (en) 2021-07-02 2021-07-02 Battery pack box and battery pack

Publications (1)

Publication Number Publication Date
CN115566339A true CN115566339A (en) 2023-01-03

Family

ID=84736709

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110748646.8A Pending CN115566339A (en) 2021-07-02 2021-07-02 Battery pack box and battery pack

Country Status (1)

Country Link
CN (1) CN115566339A (en)

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