CN118249033A - Power battery box, power battery and electric equipment - Google Patents

Power battery box, power battery and electric equipment Download PDF

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Publication number
CN118249033A
CN118249033A CN202211665305.5A CN202211665305A CN118249033A CN 118249033 A CN118249033 A CN 118249033A CN 202211665305 A CN202211665305 A CN 202211665305A CN 118249033 A CN118249033 A CN 118249033A
Authority
CN
China
Prior art keywords
liquid cooling
exhaust
bottom plate
power battery
battery box
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
CN202211665305.5A
Other languages
Chinese (zh)
Inventor
李新澎
王子沱
申曜维
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.)
Lishen Qingdao New Energy Co Ltd
Original Assignee
Lishen Qingdao New Energy 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 Lishen Qingdao New Energy Co Ltd filed Critical Lishen Qingdao New Energy Co Ltd
Priority to CN202211665305.5A priority Critical patent/CN118249033A/en
Publication of CN118249033A publication Critical patent/CN118249033A/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
    • H01M50/30—Arrangements for facilitating escape of gases
    • 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
    • H01M10/64—Heating or cooling; Temperature control characterised by the shape of the cells
    • H01M10/643—Cylindrical 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
    • H01M10/65—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
    • H01M10/655—Solid structures for heat exchange or heat conduction
    • H01M10/6556—Solid parts with flow channel passages or pipes for heat exchange
    • 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
    • H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
    • H01M10/6567—Liquids
    • H01M10/6568—Liquids characterised by flow circuits, e.g. loops, located externally to the cells or cell casings
    • 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
    • H01M50/213—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for cells having curved cross-section, e.g. round or elliptic
    • 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
    • H01M50/30—Arrangements for facilitating escape of gases
    • H01M50/35—Gas exhaust passages comprising elongated, tortuous or labyrinth-shaped exhaust passages
    • 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 invention belongs to the field of integrated battery packs, and particularly relates to a power battery box, a power battery and electric equipment. The power battery box body comprises an integrated bottom plate; the integrated bottom plate comprises an exhaust bottom plate provided with exhaust holes and a bottom plate section bar arranged below the exhaust bottom plate; the bottom plate section is provided with an exhaust channel and a liquid cooling plate flow channel; the exhaust hole is communicated with the exhaust channel. The power battery box body provided by the invention can integrate the pressure relief and explosion prevention functions and the liquid cooling heat dissipation functions of the battery box to a high degree through a unique integrated bottom plate structure, so that the number of placed battery cells can be increased, and the flexibility of the serial-parallel connection design of the battery cells can be improved.

Description

Power battery box, power battery and electric equipment
Technical Field
The invention belongs to the field of integrated battery packs, and particularly relates to a power battery box, a power battery and electric equipment.
Background
The cylindrical power battery is used in new energy automobile industry due to the characteristics of high energy density, small internal resistance and mature production process. However, the lithium battery has active internal chemical reaction, heat is released to accumulate heat, and when the external heat dissipation rate is smaller than the heat accumulation rate, the temperature can continuously rise until reaching a fire point to cause explosion of the battery, thereby causing property loss and personal injury. When the air pressure in the battery pack is overlarge, the explosion-proof valve can maintain the air pressure balance between the battery pack and the outside through pressure relief and exhaust. In addition, the liquid cooling structure has the characteristics of high cooling efficiency and compact structure, and becomes the first choice of the heat dissipation structure of the current battery system. However, most of existing battery boxes are designed independently through explosion-proof valve liquid cooling structures, and liquid cooling structures adopt schemes of arranging liquid cooling water pipes among electric cores, so that an explosion-proof liquid cooling effect is low and space utilization rate is low.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides a power battery box body, a power battery and electric equipment.
In order to achieve the above purpose, the invention adopts the following technical scheme:
A power battery box body, comprising an integrated bottom plate; the integrated bottom plate comprises an exhaust bottom plate provided with exhaust holes and a bottom plate section bar arranged below the exhaust bottom plate; the bottom plate section is provided with an exhaust channel and a liquid cooling plate flow channel; the exhaust hole is communicated with the exhaust channel.
The exhaust channel comprises a plurality of exhaust branches; the liquid cooling plate flow channel comprises a plurality of flow branches; preferably, the exhaust branch and the flow branch are arranged at intervals up and down.
The integrated bottom plate is characterized by further comprising front and rear panels arranged on the front side and the rear side of the integrated bottom plate, and frames and an upper cover arranged on the left side and the right side of the integrated bottom plate.
Side beams are arranged on two sides of the exhaust bottom plate; preferably, the liquid cooling plate flow channel is communicated with the liquid cooling pipe through a liquid cooling pipe joint arranged on the side beam; the liquid cooling pipe is provided with a liquid cooling pipe inlet and a liquid cooling pipe outlet.
The liquid cooling pipe joints are multiple; preferably, the liquid cooling pipe joint is a plurality of liquid cooling pipe joints connected in parallel.
The exhaust channel is communicated with the explosion-proof ventilation valve, and the explosion-proof ventilation valve is arranged on the front panel and the rear panel.
The exhaust hole comprises an exhaust hole body and an arc-shaped cap arranged on the exhaust hole body; the arc-shaped cap covers part of the vent hole body; preferably, the arc-shaped cap covers 1/5-4/5 of the vent hole body.
The invention also comprises a power battery, which comprises the power battery box body and an electric core arranged in the power battery box body;
The positive electrode of the battery cell faces upwards, and the negative electrode of the battery cell faces downwards and is arranged above the exhaust bottom plate.
The application also comprises an electric device comprising the power battery. The powered device of the present application includes, but is not limited to, a power automobile.
Compared with the prior art, the invention has the beneficial effects that:
The power battery box body provided by the invention can integrate the pressure relief and explosion prevention functions and the liquid cooling heat dissipation functions of the battery box to a high degree through a unique integrated bottom plate structure, so that the number of placed battery cells can be increased, and the flexibility of the serial-parallel connection design of the battery cells can be improved.
According to the power battery box body, the design of the water flow channels of the multiple branches can effectively increase the cooling area and reduce the flow resistance;
the unique design of the exhaust hole and the independent exhaust channel of the power battery box body can realize the directional exhausting, pressure releasing and explosion-proof functions.
The power battery box provided by the invention can effectively improve the liquid cooling explosion-proof performance of the cylindrical power battery box and ensure property safety and driving safety.
Drawings
FIG. 1 is a schematic view of the overall structure of a power cell housing according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of an integrated chassis according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of an exploded construction of an integrated backplane of one embodiment provided by the present invention;
FIG. 4 is a schematic view of an exploded view of a base plate of a case according to an embodiment of the present invention;
FIGS. 5-6 are schematic diagrams illustrating the structure of an exhaust channel and a liquid cooling plate flow channel according to an embodiment of the present invention;
FIG. 7 is a schematic view of the installation of a box exhaust floor and floor profile according to one embodiment of the present invention;
fig. 8 is a schematic view of the installation of the front and rear panels of the case and the floor profile according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail below with reference to the drawings and preferred embodiments, so that those skilled in the art can better understand the technical solutions of the present invention.
FIGS. 1-8 illustrate a power battery case, an integrated chassis 230, front and rear panels 220 disposed at front and rear sides of the integrated chassis, rims 210 disposed at left and right sides of the integrated chassis, and an upper cover 600; the integrated bottom plate comprises an exhaust bottom plate 231 provided with exhaust holes 2311, side beams 232 arranged on two sides of the exhaust bottom plate and a bottom plate section 234 arranged below the exhaust bottom plate; the bottom plate section is provided with an exhaust channel 2341 and a liquid cooling plate flow channel 2342; the exhaust hole 2311 is communicated with the exhaust passage; the battery cell 300 is disposed above the exhaust floor to form a power cell. The exhaust passage of the present application includes a plurality of exhaust branches independent from each other; the high pressure gas in the power cell enters the vent channel 2341 through the vent 2311 and the base portion 2312 of the vent base plate is bonded to the base plate profile 234 to transfer heat from the cells to the base plate profile 234.
The liquid cooling plate flow channel is communicated with the liquid cooling pipe 400 through a liquid cooling pipe joint 233 arranged on the side beam; the liquid cooling pipe is provided with a liquid cooling pipe inlet and a liquid cooling pipe outlet. The liquid cooling pipe is arranged between the side beam 232 and the front and rear panels 220; the liquid cooling pipe inlet and the liquid cooling pipe outlet are disposed inside the front and rear panels 220. The application avoids the reduction of the number of the placed battery cells 300 caused by the placement of the liquid cooling tubes among the battery cells 300, thereby realizing the functions of reducing the interval between the battery cells 300 and increasing the number of the arranged battery cells 300, and simultaneously, avoiding the limitation of the serial-parallel connection design of the battery cells 300 caused by the arrangement of the liquid cooling tubes among the battery cells 300. The liquid cooling pipe joints are connected in parallel. The liquid cooling plate flow channel 2342 adopts a multi-branch design, and comprises a plurality of flow branches, so that the flow resistance is small and the cooling area can be greatly increased. The water flows in from the water inlet joint of the liquid cooling pipe 400, flows out from the water outlet joint of the liquid cooling pipe 400 after passing through the liquid cooling plate flow channel 2342, and takes away the heat emitted by the battery cell 300. The liquid cooling pipe joint 233 is of a straight joint type, one end of the liquid cooling pipe joint 233 is connected with a joint connecting hole 2343 on the bottom plate profile 234, and the other end of the liquid cooling pipe joint is connected with the liquid cooling pipe 400. The liquid cooling pipe joints 233 are connected in parallel, so that the flow rate of water inlet and outlet can be increased, and the liquid cooling effect can be improved.
The exhaust passage 2341 communicates with the explosion-proof air-permeable valve 500 provided on the front and rear panels 210. The cell is placed with its anode facing up and cathode facing down over the exhaust floor, transferring heat down to the integrated floor 230.
The floor profile 234 includes a vent channel 2341 and a liquid-cooled panel flow channel 2342. Grooves among all flow branches of the liquid cooling plate flow channel 2342 form a plurality of exhaust branches, and the exhaust branches form an exhaust channel 2341 and are in an up-down interval arrangement mode of the exhaust channel 2341 and the water flow channel 2342. The exhaust passage 2341 is independently designed, and each exhaust branch is not communicated with each other. When the internal air pressure of the power battery rises, the high-pressure air reaches the exhaust channel 2341 through the exhaust hole 2311, is exhausted along the exhaust channel 2341 through the explosion-proof ventilation valve 500, and realizes the function of pressure relief to maintain the stable pressure in the battery pack, thereby achieving the purpose of explosion prevention. The liquid cooling plate flow channel 2342 comprises a plurality of water flow branches, and the design of the branches can reduce the flow resistance of water flow, increase the flow speed and further achieve the effect of enhancing heat dissipation compared with the liquid cooling schemes of other liquid cooling pipes, such as a serpentine pipe, under the condition of the same flow. In addition, the multi-branch design can greatly increase the cooling area, and the contact area with the battery cell 300 is larger, so that the cooling effect can be increased. The water flow flows in from the liquid cooling pipe joint at the water inlet of the liquid cooling pipe 400, flows out from the liquid cooling pipe joint at the water outlet of the liquid cooling pipe 400 after passing through the liquid cooling plate flow channel 2342, and takes away the heat emitted by the electric core 300.
The exhaust bottom plate 231 is uniformly provided with a plurality of exhaust holes 2311, and the exhaust holes 2311 adopt a unique structural design and comprise an exhaust hole body and an arc-shaped cap arranged on the exhaust hole body; the arc cap covers part of the exhaust hole body. Preferably, the arc cap covers 1/5-4/5, such as 2/5 or 3/5, of the vent body.
The exhaust hole can lead out the high-pressure gas in the power battery in a directional way when the high-pressure gas is discharged outwards, so that the functions of diversion and directional exhaust are realized. The unique design of the vent 2311, in combination with the independent venting design of the vent channel 2341, can prevent the random diffusion of high temperature gases after thermal runaway of the cell from causing greater damage such as fire. The high-pressure gas in the power battery is guided by the exhaust hole 2311 and then is directionally discharged to the exhaust channel 2341, and is discharged by the explosion-proof ventilation valve 500, so that pressure relief and explosion prevention are realized. In addition, as shown in fig. 7, the exhaust bottom plate 231 and the bottom plate profile 324 are bonded by using a heat-conducting adhesive, and the large-area contact between the two can effectively transfer the heat emitted from the battery cell 300 to the box bottom plate profile 234, and the heat is led out of the battery pack through the liquid cooling plate flow channel 2342.
The side sill 232 is disposed inside the case front and rear panels 210 and serves to support the case front and rear panels 210. In addition, the edge beam 232 can separate the liquid cooling pipe joint 233 from the battery cell 300, so that the influence of the sealing failure and water seepage of the liquid cooling pipe 400 on the normal operation of the battery cell 300 can be effectively prevented.
The liquid cooling pipe joint 233 is of a straight joint type, one end of the liquid cooling pipe joint 233 is connected with the joint connection hole 2343 of the bottom plate profile 234, and the other end of the liquid cooling pipe joint is connected with the liquid cooling pipe 400. The straight-through connector has the advantages of good sealing performance, compact structure and small volume, not only can ensure the safety of the battery pack, but also can save space, and creates conditions for increasing the number of the battery cells 300 in the later period.
The common liquid cooling scheme of battery box is for arranging liquid cooling pipe such as coiled pipe between the electric core, has greatly taken up the space of arranging of electric core, also can lead to the electric core to need consider the influence that the liquid cooling pipe trend when carrying out the series-parallel design. The design of the bottom plate section 234 can realize multi-branch liquid cooling heat dissipation, the multi-branch liquid cooling heat dissipation is combined with the exhaust holes 2311 on the exhaust bottom plate 231 to realize explosion prevention by directional diversion and pressure relief of high-pressure gas in the power battery, and the integrated bottom plate 230 is bonded with the bottom plate section 234 according to the relative position relation shown in fig. 7 to realize the integration of liquid cooling and explosion prevention of the power battery box body. The design can avoid the problem that the number of the electric cores 300 which can be placed is reduced due to the fact that the liquid cooling pipes are placed between the electric cores 300, and therefore the effect of improving the space utilization rate is achieved. Meanwhile, the influence of liquid cooling pipes among the battery cells 300 is reduced, and the serial-parallel arrangement of the battery cells in the later stage has higher design freedom. In addition, the design can separate the battery cell 300 from a high-pressure and high-temperature exhaust channel and a liquid cooling structure, so that explosion caused by rapid diffusion of high-pressure and high-temperature gas to other battery cells when the battery cell is in thermal runaway and liquid cooling failure caused by burning out of a liquid cooling water pipe can be prevented. Therefore, the design can ensure that the pressure relief structure and the liquid cooling structure can normally operate even if the thermal runaway of the battery cell occurs, thereby preventing the explosion of the battery box.
Specifically, the liquid cooling pipe water inlet and the liquid cooling water outlet of the liquid cooling pipe 400 are respectively disposed inside the front and rear panels 210 of the box body, and the heat dissipation effect of the bottom plate profile 234 is improved by increasing the water flow rate of the liquid cooling pipe water inlet pipe and the liquid cooling pipe water outlet pipe by adopting a plurality of liquid cooling pipe joints 233 in parallel. In addition, each liquid-cooling pipe joint 233 corresponds to each flow branch of the liquid-cooling plate flow passage 2342, so that the influence between each flow branch of the liquid-cooling plate flow passage 2342 can be reduced. In the present application, water is used as a flowing medium, but the liquid-cooled medium is not limited thereto.
The explosion-proof ventilation valves 500 are mounted on the front and rear panels 210 of the box body, and each explosion-proof ventilation valve 500 is communicated with one exhaust channel to ensure the smooth pressure relief of the power battery box body.
As shown in fig. 8, the lower edge 211 of the front and rear panels 210 is bonded to the floor edge 2344 of the floor profile 234. Similarly, the front and rear panels 210 and the frame 220 are bonded together, and the upper cover 600 is assembled with the front and rear panels and the frame to form a power battery case structure. To protect the cell 300 from impact and to insulate and waterproof.
The foregoing is merely a preferred embodiment of the present invention and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present invention, which are intended to be comprehended within the scope of the present invention.

Claims (10)

1. The power battery box body is characterized by comprising an integrated bottom plate; the integrated bottom plate comprises an exhaust bottom plate provided with exhaust holes and a bottom plate section bar arranged below the exhaust bottom plate; the bottom plate section is provided with an exhaust channel and a liquid cooling plate flow channel; the exhaust hole is communicated with the exhaust channel.
2. The power cell housing of claim 1, wherein the vent passage comprises a plurality of vent branches; the liquid cooling plate flow channel comprises a plurality of flow branches;
preferably, the exhaust branch and the flow branch are arranged at intervals up and down.
3. The power battery box of claim 1, further comprising front and rear panels disposed on front and rear sides of the integrated chassis, and side frames and an upper cover disposed on left and right sides of the integrated chassis.
4. The power battery box body according to claim 1, wherein side beams are arranged on two sides of the exhaust bottom plate;
Preferably, the liquid cooling plate flow channel is communicated with the liquid cooling pipe through a liquid cooling pipe joint arranged on the side beam; the liquid cooling pipe is provided with a liquid cooling pipe inlet and a liquid cooling pipe outlet.
5. The power battery box according to claim 4, wherein the plurality of liquid-cooled pipe joints;
Preferably, the liquid cooling pipe joint is a plurality of liquid cooling pipe joints connected in parallel.
6. A power cell housing according to claim 3, wherein said vent passage communicates with an explosion-proof vent valve;
Preferably, the explosion-proof ventilation valves are arranged on the front panel and the rear panel.
7. The power battery box according to claim 1, wherein the vent comprises a vent body and an arc cap disposed on the vent body; the arc-shaped cap covers part of the vent hole body;
preferably, the arc-shaped cap covers 1/5-4/5 of the vent hole body.
8. A power battery comprising the power battery box of any one of claims 1-7 and an electrical core disposed in the power battery box.
9. The power cell of claim 8, wherein the positive electrode of the cell is disposed upwardly and the negative electrode is disposed downwardly above the exhaust floor.
10. A powered device comprising the power cell of claim 8 or 9.
CN202211665305.5A 2022-12-23 2022-12-23 Power battery box, power battery and electric equipment Pending CN118249033A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202211665305.5A CN118249033A (en) 2022-12-23 2022-12-23 Power battery box, power battery and electric equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202211665305.5A CN118249033A (en) 2022-12-23 2022-12-23 Power battery box, power battery and electric equipment

Publications (1)

Publication Number Publication Date
CN118249033A true CN118249033A (en) 2024-06-25

Family

ID=91553141

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202211665305.5A Pending CN118249033A (en) 2022-12-23 2022-12-23 Power battery box, power battery and electric equipment

Country Status (1)

Country Link
CN (1) CN118249033A (en)

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