CN115275482A - Battery pack - Google Patents

Battery pack Download PDF

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Publication number
CN115275482A
CN115275482A CN202210800774.7A CN202210800774A CN115275482A CN 115275482 A CN115275482 A CN 115275482A CN 202210800774 A CN202210800774 A CN 202210800774A CN 115275482 A CN115275482 A CN 115275482A
Authority
CN
China
Prior art keywords
battery pack
structures
accommodating
battery
adjacent
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
CN202210800774.7A
Other languages
Chinese (zh)
Inventor
瓦迪姆·希契巴科夫
雷厉
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to CN202210800774.7A priority Critical patent/CN115275482A/en
Publication of CN115275482A publication Critical patent/CN115275482A/en
Pending legal-status Critical Current

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    • 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
    • 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
    • H01M10/6556—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
    • H01M50/233—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions
    • 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
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/572—Means for preventing undesired use or discharge
    • H01M50/584—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries
    • H01M50/588—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries outside the batteries, e.g. incorrect connections of terminals or busbars
    • 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
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/572—Means for preventing undesired use or discharge
    • H01M50/584—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries
    • H01M50/59—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries characterised by the protection means
    • H01M50/593—Spacers; Insulating plates
    • 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)
  • Secondary Cells (AREA)

Abstract

The battery pack comprises accommodating structures which are arranged together, the cylindrical batteries in the accommodating structures are arranged into a parallelogram or an equilateral triangle, the three adjacent cylindrical batteries are arranged into the equilateral triangle, the accommodating structures are formed by connecting a plurality of circular arc edges end to end, and each circular arc edge is attached to the outer wall of one of the cylindrical batteries in the accommodating structures. The battery pack of the invention replaces liquid cooling plates with cooling pipes which are dispersedly arranged in the battery gaps, thereby not occupying extra space of the battery module; the side wall of the accommodating structure is wavy, and a reinforcing rib structure is formed at the junction of the arc edges, so that the supporting strength of the battery pack is greatly improved; the single containing structure is provided with the ceramic insulating film layer formed through micro-arc oxidation/thermoelectric chemical oxidation treatment, the containing structure is further provided with insulating and corrosion-resistant effects besides the side wall supporting strength of the containing structure is further improved, batteries in the containing structures are mutually independent to form split type arrangement, and the safety of the battery module in emergency can be greatly improved.

Description

Battery pack
Technical Field
The invention relates to a battery pack technology, in particular to a battery pack.
Background
In recent years, in order to improve the endurance mileage, the power battery of a new energy automobile has a trend of frame integration, such as the CTP lithium battery in the ningde era, which puts higher demands on the support strength of the battery pack. When the power battery adopts the cylindrical battery, because the heat transfer efficiency between the cylindrical batteries is low, an additional liquid cooling plate is often required to be arranged to control the temperature of the battery. The existing liquid cooling plate is mostly arranged at the bottom or the middle part of the battery pack, and occupies the arrangement space of the battery core.
Disclosure of Invention
The invention aims to provide a battery pack which has good heat dissipation performance and a more compact structure.
In order to achieve the above purpose, the technical scheme of the invention is as follows:
the battery pack comprises a plurality of accommodating structures which are arranged together, wherein a cylindrical battery base is arranged at the bottom of each accommodating structure, cylindrical batteries are placed in the cylindrical battery base and are arranged into parallelograms or equilateral triangles, adjacent three cylindrical batteries in the accommodating structures are arranged into equilateral triangles, each accommodating structure is formed by connecting a plurality of arc edges end to end, and the outer wall of one of the cylindrical batteries in each arc edge and the accommodating structure is attached to the outer wall of the other one of the cylindrical batteries.
Furthermore, the material of the accommodating structure is aluminum or aluminum alloy.
Furthermore, the outer surface of the accommodating structure is provided with a ceramic insulating film layer, and the ceramic insulating film layer is formed by micro-arc oxidation/thermoelectric chemical oxidation.
Further, a cooling pipe is arranged between three adjacent cylindrical batteries, and a heat exchange medium flows in the cooling pipe.
Further, the flow directions of the heat exchange media in the adjacent cooling pipes are opposite.
Furthermore, when the accommodating structures are arranged together, the concave-convex parts of the adjacent accommodating structures are staggered and attached.
Furthermore, a plurality of clamping structures are arranged at the joint of the adjacent accommodating structures.
Furthermore, the engaging structure is a pair of engaging buckles and engaging grooves, the pair of engaging buckles and the engaging grooves are respectively located on the adjacent accommodating structures, the engaging buckles are located on the convex portions of the accommodating structures, and the engaging grooves are located on the concave portions of the accommodating structures.
Furthermore, when the containing structures are arranged together, the joints of the adjacent 4 containing structures form cooling channels with openings at two ends.
Further, the cooling channel is internally provided with a cooling pipe.
Compared with the prior art, the battery pack has the beneficial technical effects that:
the cooling pipes distributed in the battery gaps are used for replacing liquid cooling plates, so that the space of the battery module is not additionally occupied;
the side wall of the accommodating structure is wavy, and a reinforcing rib structure is formed at the junction of the arc edges, so that the supporting strength of the battery pack is greatly improved;
every 6 cylindrical batteries are tightly arranged in an independent accommodating structure, the side walls of the accommodating structures are arranged in a concave-convex staggered manner, the accommodating structures in the battery module are distributed and tightly attached to each other on the whole to form a resultant force supporting effect, and the supporting strength of the battery pack in the vertical direction is further improved;
the single accommodating structure is provided with a ceramic insulating film layer formed through micro-arc oxidation/thermoelectric chemical oxidation treatment, so that the accommodating structure has insulating and corrosion-resistant effects besides further improving the side wall supporting strength of the accommodating structure, the batteries in the accommodating structures are mutually independent to form split type arrangement, and the safety of the battery module in emergency can be greatly improved;
the clamping structure between the containing structures enables the adjacent containing structures to be combined together more tightly, the resultant force supporting effect is further improved, and the reinforcing rib structure is formed at the joint of the buckle and the clamping groove structure at the containing structure, so that the supporting strength of the battery pack in the vertical direction is further improved;
the heat exchange media in the adjacent cooling channels/cooling pipes flow in opposite directions, so that the temperature of the whole battery pack is more uniform, and the defect of local over-cooling or over-heating of the battery module caused by the use of a liquid cooling plate is avoided.
Drawings
Fig. 1 is a parallelogram holding structure in embodiment 1 of the present invention;
fig. 2 is a schematic arrangement diagram of a cylindrical battery in an accommodating structure according to embodiment 1 of the present invention;
fig. 3 is a schematic view of a plurality of accommodating structures which are assembled together in embodiment 1 of the present invention;
fig. 4 is a parallelogram holding structure in embodiment 2 of the present invention;
fig. 5 is a schematic arrangement diagram of a cylindrical battery in a housing structure according to embodiment 2 of the present invention;
fig. 6 is a picture of a real object formed by splicing the accommodating structures of the invention together.
Detailed Description
Example 1
As shown in fig. 1-3, a vertical battery pack comprises a containing structure 1 which is closely arranged together, a cylindrical battery base 101 is arranged at the bottom of the containing structure 1, the cylindrical battery base 101 is used for placing cylindrical batteries 2,6 cylindrical batteries 2 are arranged into a parallelogram, and three adjacent cylindrical batteries 2 in the containing structure 1 are arranged into an equilateral triangle. Each equilateral triangle has a cooling pipe 3 in the central space, and has the coolant liquid in the cooling pipe 3, and the coolant liquid flow direction in the adjacent cooling pipe 3 is opposite, and cooling pipe 3 links to each other with outside liquid cooling circulating device. The holding structure 1 is formed by connecting a plurality of arc edges end to end, and each arc edge is attached to the outer wall of one of the cylindrical batteries 2 in the holding structure 1. The material of the containing structure 1 is aluminum alloy, and the outer surface of the containing structure is provided with a ceramic insulating film layer formed by thermoelectric chemical oxidation treatment. When the accommodating structures 1 are arranged together, the concave-convex parts of adjacent accommodating structures 1 are alternatively attached (as shown in fig. 3), that is, the convex arc edge of one accommodating structure is attached to the concave part of the other accommodating structure where the two arc edges are connected. In addition, the joint of the adjacent accommodating structures 1 has a plurality of clamping structures. The clamping structure is a pair of buckles 102 and a clamping groove 103 which are matched with each other, the buckles 102 and the clamping groove 103 are respectively positioned on adjacent accommodating structures, the buckles 102 are positioned on the convex arc edges of the accommodating structures, and the clamping groove 103 is positioned in a concave part where the two arc edges of the accommodating structures are connected.
When the containing structures are arranged together, the joints of 4 adjacent containing structures 1 form cooling channels 4 with openings at two ends. This cooling channel 4 can be used alone as a cooling circuit or can be provided with the same cooling tubes 3 as in the housing structure 1.
Example 2
As shown in fig. 4 and 5, the present embodiment is different from embodiment 1 in that 6 cylindrical batteries 2 are arranged in an equilateral triangle, and the corresponding receiving structure 1' is also shaped like an equilateral triangle.
FIG. 6 is a picture of the two containing structures (1, 1') of examples 1 and 2 spliced together after being subjected to the thermal electrochemical oxidation treatment. The grey substances on the outer surface of the containing structure (1, 1') are ceramic insulating film layers formed after thermoelectric chemical oxidation treatment.

Claims (10)

1. The battery pack comprises a plurality of accommodating structures which are arranged together, wherein the bottom of each accommodating structure is provided with a cylindrical battery base, and cylindrical batteries are arranged in the cylindrical battery bases.
2. The battery pack of claim 1, wherein the receiving structure is made of aluminum or an aluminum alloy.
3. The battery pack of claim 2, wherein the receiving structure has a ceramic film layer on the outer surface, and the ceramic film layer is formed by micro-arc oxidation/thermal electrochemical oxidation.
4. The battery pack according to claim 1, wherein a cooling pipe is provided between three adjacent cylindrical batteries, and a heat exchange medium flows in the cooling pipe.
5. The battery pack according to claim 4, wherein the flow directions of the heat exchange media in the adjacent cooling tubes are opposite.
6. The battery pack of claim 1, wherein the concave-convex portions of adjacent receiving structures are staggered when the receiving structures are arranged together.
7. The battery pack of claim 6, wherein the adjacent receiving structures have a plurality of engaging structures at the joint.
8. The battery pack of claim 7, wherein the engaging structure is a pair of engaging clips and engaging slots, the pair of engaging clips and engaging slots are respectively located on the adjacent receiving structures, the pair of engaging clips are located on the convex portions of the receiving structures, and the pair of engaging slots are located on the concave portions of the receiving structures.
9. The battery pack of any of claims 1-8, wherein the receiving structures are arranged such that the junctions of adjacent 4 receiving structures form cooling channels that are open at both ends.
10. The battery pack of claim 9, wherein the cooling channel has a cooling tube therein.
CN202210800774.7A 2022-07-06 2022-07-06 Battery pack Pending CN115275482A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210800774.7A CN115275482A (en) 2022-07-06 2022-07-06 Battery pack

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210800774.7A CN115275482A (en) 2022-07-06 2022-07-06 Battery pack

Publications (1)

Publication Number Publication Date
CN115275482A true CN115275482A (en) 2022-11-01

Family

ID=83765162

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210800774.7A Pending CN115275482A (en) 2022-07-06 2022-07-06 Battery pack

Country Status (1)

Country Link
CN (1) CN115275482A (en)

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