CN107275716B - Air-cooled battery pack with high heat dissipation efficiency - Google Patents
Air-cooled battery pack with high heat dissipation efficiency Download PDFInfo
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- CN107275716B CN107275716B CN201710536063.2A CN201710536063A CN107275716B CN 107275716 B CN107275716 B CN 107275716B CN 201710536063 A CN201710536063 A CN 201710536063A CN 107275716 B CN107275716 B CN 107275716B
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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
- 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
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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
- 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
- H01M10/6561—Gases
- H01M10/6563—Gases with forced flow, e.g. by blowers
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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
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- 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
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Abstract
The invention provides an air-cooled battery pack with high heat dissipation efficiency, wherein a second side plate can move along a first mounting plate to realize the opening and the plugging of a first heat dissipation hole on the first side plate; the fans are arranged in the four directions of the battery cell, so that air convection is enhanced, and quick heat dissipation is realized; flexible connection of a plurality of battery cell support units is realized, and by arranging the pressure relief sheets, the distance between the pressure relief sheets between two adjacent battery cell support units is set, so that when an electric cell explodes, heat and pressure can be effectively discharged, the loss of the electric cell around during explosion is reduced, and the safety coefficient of a module, a module and the whole battery pack is improved; the maintenance cost of the battery pack is reduced; the contact area with the air is increased, and a part of heat generated when the battery core works is released.
Description
Technical Field
The invention relates to the technical field of batteries, in particular to an air-cooled battery pack with high heat dissipation efficiency.
Background
A plurality of single batteries or super capacitors are connected in series and parallel to form a module, a plurality of modules are connected in series and parallel to form a battery pack with certain voltage and capacity, and the battery pack is placed in a sealed box to form a battery pack. During the use process of the battery pack, a large amount of heat can be generated, the temperature of the battery pack is increased, and particularly in summer, potential safety hazards such as high-temperature fire, explosion and the like are easy to occur in the battery pack. The heat dissipation technology of the battery pack is a difficult problem, the sealing requirement of the battery pack and the heat dissipation of the battery pack which are considered safely are relatively contradictory problems, and most of the battery packs adopt air cooling heat dissipation and liquid cooling heat dissipation, and the two heat dissipation modes are common. Air cooling heat dissipation is that air is the heat transfer medium, directly lets the air pass the module in order to reach the purpose of cooling, heating. The forced air cooling is to take away the heat of the battery through the exhaust fan by the wind generated by movement, and has simple structure and simple and convenient maintenance. But the air cooling has the following defects: the heat dissipation effect is poor, the requirements on air duct design and structural arrangement are high, the temperature consistency of the module is difficult to guarantee, especially for the battery close to the air outlet, the heat is accumulated, and although the maintenance is simple, the ideal heat dissipation effect cannot be achieved. The liquid cooling heat dissipation utilizes the liquid cooling to have large specific heat and strong heat absorption. The heat is taken away through the heat source by the flowing of the liquid, and due to the physical characteristics of the liquid, the heat dissipation effect of the mode is far better than that of air cooling heat dissipation. However, the liquid cooling has the following disadvantages and shortcomings: the radiating effect is ideal, and the water route design is complicated, and the water route connection is complicated between the module especially in the battery box, because different modules differ at the internal fixed mode of battery box, moves under long-term road conditions complex condition, and the water route connection span is big between module and the module, and the probability of weeping also increases simultaneously. If some parts in the heat dissipation system are damaged in the long-term use process, the whole heat dissipation system needs to be disassembled, and the maintenance is extremely inconvenient.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides the air-cooled battery pack with high heat dissipation efficiency, which has the characteristics of high heat dissipation efficiency and high safety.
The technical scheme for solving the problems comprises the following steps: an air-cooled battery pack with high heat dissipation efficiency comprises a box body, a box cover, a battery cell support and a battery cell, wherein the box body is of a hollow structure and comprises side plates, sealing plates and a bottom plate, the two sealing plates are respectively fixed on the left side and the right side of the bottom plate, and the two side plates are respectively fixed on the front side and the rear side of the bottom plate; the side plates comprise a first side plate and a second side plate, the first side plate is sequentially provided with a first heat dissipation area, a first operation groove and a first mounting plate from top to bottom, first heat dissipation holes distributed in a matrix mode are formed in the first heat dissipation area, and the first heat dissipation holes are pentagonal; the second side plate is provided with a second heat dissipation area and a first operation column, the first operation column is positioned below the second heat dissipation area, the first operation column is a cylinder, and the second heat dissipation area is provided with first heat dissipation holes distributed in a matrix manner; the second side plate is connected with the first mounting plate in a sliding mode, and the first operating column penetrates through the first operating groove;
the sealing plate comprises a first sealing plate and a second sealing plate, the first sealing plate is sequentially provided with a third heat dissipation area, a second operation groove and a second mounting plate from top to bottom, the third heat dissipation area is provided with second heat dissipation holes distributed in a matrix manner, and the second heat dissipation holes are rhombic; the second sealing plate is provided with a fourth heat dissipation area and a second operation column, the second operation column is positioned below the fourth heat dissipation area, the second operation column is a cylinder, and the fourth heat dissipation area is provided with second heat dissipation holes distributed in a matrix manner; the second sealing plate is connected with the second mounting plate in a sliding mode, and the second operation column penetrates through the second operation groove;
the battery cell support is distributed in a matrix manner and comprises a plurality of battery cell support units and a connecting frame;
the battery cell support unit comprises a bottom frame, a pressure relief sheet and a support sheet; the underframe comprises a first plate, a second plate, a third plate and a fourth plate, the first plate is of a rectangular frame structure, a square through hole is formed in the center of the first plate, mounting areas are respectively arranged on the upper side and the lower side of the square through hole and comprise a first mounting area and a second mounting area, the first mounting area is provided with four square grooves, the heights of the four square grooves are sequentially increased along the transverse direction of the first plate, the second mounting area is provided with four square grooves, and the heights of the four square grooves are sequentially reduced along the transverse direction of the first plate;
the second plate is of a rectangular frame structure, a square through hole is formed in the center of the second plate, boss areas are respectively arranged on the upper side and the lower side of the square through hole and comprise a first boss area and a second boss area, the first boss area is provided with four square bosses, the heights of the four square bosses are sequentially increased along the transverse direction of the first plate, the second boss area is provided with four square bosses, and the heights of the four square bosses are sequentially reduced along the transverse direction of the first plate;
the third plate is of a rectangular frame structure, a square through hole is formed in the center of the third plate, fixing grooves are formed in the left side and the right side of the square through hole, and the fixing grooves are located above the square through hole; the fixing groove comprises a first groove and second grooves, the first groove is square, the second grooves are square, the two second grooves are positioned in the first groove, and the two second grooves are symmetrical relative to the first groove;
the fourth plate is of a rectangular frame structure, a square through hole is formed in the center of the fourth plate, fixing pieces are arranged on the left side and the right side of the square through hole, and the fixing pieces are located above the square through hole; the fixing piece comprises a fixing table and a third groove, the fixing piece is square, and the third groove is distributed around the upper surface, the left side wall and the right side wall of the fixing piece;
the pressure relief sheet is square, the pressure relief sheet is provided with pressure relief holes, the pressure relief holes are uniformly distributed in an annular shape around the center of the pressure relief sheet, included angles between every two adjacent pressure relief holes are equal, a plurality of pressure relief seams are respectively arranged on a straight line where the circle center of each pressure relief hole and the center of the pressure relief sheet are located, and distances between every two adjacent pressure relief seams on the same straight line are equal;
the connecting frame comprises a first support and a second support, the two first supports are in left-right mirror image, the second support is positioned between the two first supports, and two ends of the second support are respectively fixedly connected with the two first supports;
the first plate, the second plate, the third plate and the fourth plate are respectively fixed with a pressure relief sheet, and the central axes of the four pressure relief sheets are respectively aligned with the central axes of the square holes of the four plates; the left and right faces of the third plate and the fourth plate are aligned face to face, the first plate and the second plate are arranged between the third plate and the fourth plate, two ends of the first plate are fixedly connected with the third plate and the fourth plate respectively, two ends of the second plate are fixedly connected with the third plate and the fourth plate respectively to form a cubic frame, four support sheets are fixed at the bottom end of the cubic frame, and the four support sheets are located at four corners of the bottom end of the cubic frame respectively;
the battery cell support units are aligned and distributed in a matrix of multiple rows and columns, two adjacent rows of battery cell support units are connected with the square groove through the matching of the square bosses, and two adjacent rows of battery cell support units are connected through the connecting frame;
the box cover is fixed at the top end of the box body, an electrode connector is arranged on the side wall of the box body, a working groove is arranged in the box body, the working groove is of a hollow structure with an opening at the upper end and a blocked lower end, the projection of the working groove on the horizontal plane is rectangular, the lower end of the working groove is fixed with the bottom plate, the working groove is positioned at the center position of the bottom plate, exhaust fans are arranged in the front, back, left and right directions of the working groove, and the exhaust fans are fixed on the bottom plate through support rods; the electric core support is fixed in the working groove, an electric core is arranged in each electric core support unit, one end of the electric core is placed in a battery groove of one electric core support unit, an electrode at the end of the electric core is exposed out of the electrode groove, the other end of the electric core is placed in the battery groove of the other electric core support unit, the electrode at the end of the electric core is exposed out of the electrode groove, and the nickel strap is welded at the electrode groove of the electric core support unit.
The height of the first side plate is H1, and the height of the second side plate is 0.5H1.
The height of the first sealing plate is H2, and the height of the second sealing plate is 0.5H2.
The first plate height is L1, the second plate height is L2, the third plate height is L3, the fourth plate height is L4, and L1= L2= L3= L4.
The first plate length and width are respectively P1 and P2, the second plate length and width are respectively P3 and P4, P1= P3, and P2= P4.
The third plate has a length and a width M1 and M2, the fourth plate has a length and a width M3 and M4, respectively, M1= M3, and M2= M4.
The supporting sheet is in an isosceles triangle shape.
The invention has the following beneficial effects:
(1) According to the battery pack, the second side plate can move along the first mounting plate, so that the first heat dissipation holes in the first side plate are opened and sealed, the second sealing plate can move along the second mounting plate, so that the second heat dissipation holes in the second sealing plate are opened and sealed, the heat dissipation performance of the battery pack is guaranteed, and the tightness of the battery pack is guaranteed; through all set up the fan in four directions of electric core, strengthened the air convection, realized quick heat dissipation.
(2) The battery cell replacement device has the advantages that the flexible connection of the plurality of battery cell support units is realized by the matching of the square bosses and the square grooves and the connecting frame, the battery cell replacement efficiency is improved, the structure is simple, and meanwhile, the battery cells are separated in pairs by the battery cell support units, so that the short circuit risk caused by the battery cell skin breaking and the like is avoided; by arranging the pressure relief pieces, the distance between the two adjacent cell support units is arranged, so that when the cells explode, heat and pressure can be effectively discharged, the loss of the cells around during explosion is reduced, and the safety coefficient of the module, the module and the whole battery pack is improved; the maintenance cost of the battery pack is reduced; the contact area with the air is increased, and a part of heat generated when the battery core works is released, so that the heat dissipation effect is achieved.
Drawings
Fig. 1 is a left side view of the present invention.
Fig. 2 isbase:Sub>A cross-sectional view taken along the linebase:Sub>A-base:Sub>A according to the present invention.
Fig. 3 is a schematic structural diagram of a side plate of the present invention.
FIG. 4 is a schematic diagram of a second side plate structure according to the present invention.
FIG. 5 is a schematic view of a sealing plate according to the present invention.
FIG. 6 is a schematic structural view of a second sealing plate according to the present invention.
Fig. 7 is a schematic diagram of a cell support structure according to the present invention.
Fig. 8 is a schematic structural diagram of a cell support unit according to the present invention.
FIG. 9 is a schematic diagram of a first plate structure according to the present invention.
FIG. 10 is a schematic diagram of a second plate structure according to the present invention.
FIG. 11 is a schematic view of the third plate structure of the present invention.
FIG. 12 is a schematic diagram of a fourth plate structure according to the present invention.
Fig. 13 is a schematic view of a pressure relief element according to the present invention.
FIG. 14 is a schematic view of the connecting frame structure of the present invention.
Fig. 15 is a schematic structural diagram of the battery cell bracket after the battery cell is mounted on the battery cell bracket.
In the figure: 1-cell support unit, 2-connecting frame, 3-bottom frame, 4-pressure relief sheet, 5-support sheet, 6-first plate, 7-second plate, 8-third plate, 9-square hole, 10-first installation region, 11-second installation region, 12-square groove, 13-first boss region, 14-second boss region, 15-square boss, 16-fixing member, 17-fixing table, 18-third groove, 19-fixing groove, 20-first groove, 21-second groove, 22-first support, 23-second support, 24-pressure relief hole, 25-pressure relief seam, 26-fourth plate, 27-cell, 28-nickel band, 101-box, 102-box cover, 103-side plate, 104-bottom plate, 105 sealing plate, 106-first side plate, 107-second side plate, 108-first sealing plate, 109-second sealing plate, 110-first heat dissipation region, 111-first operation groove, 112-first mounting plate, 113-first heat dissipation hole, 114-second heat dissipation region, 115-first operation column, 116-third heat dissipation region, 117-second operation groove, 118-second mounting plate, 119-second heat dissipation hole, 120-fourth heat dissipation region, 121-second operation column, 122-electrode connector, 123-working groove, 124-exhaust fan, 125-support rod, 126-cell support.
Detailed Description
The invention is further described with reference to the following drawings and detailed description.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
An air-cooled battery pack with high heat dissipation efficiency comprises a box body, a box cover, a battery cell support and a battery cell, wherein the box body is of a hollow structure and comprises side plates, sealing plates and a bottom plate, the two sealing plates are respectively fixed on the left side and the right side of the bottom plate, and the two side plates are respectively fixed on the front side and the rear side of the bottom plate; the side plates comprise a first side plate and a second side plate, the first side plate is sequentially provided with a first heat dissipation area, a first operation groove and a first mounting plate from top to bottom, the first heat dissipation area is provided with first heat dissipation holes distributed in a matrix manner, and the first heat dissipation holes are pentagonal; the second side plate is provided with a second heat dissipation area and a first operation column, the first operation column is positioned below the second heat dissipation area, the first operation column is a cylinder, and the second heat dissipation area is provided with first heat dissipation holes distributed in a matrix shape; the second side plate is connected with the first mounting plate in a sliding mode, and the first operating column penetrates through the first operating groove;
the sealing plate comprises a first sealing plate and a second sealing plate, the first sealing plate is sequentially provided with a third heat dissipation area, a second operation groove and a second mounting plate from top to bottom, the third heat dissipation area is provided with second heat dissipation holes distributed in a matrix manner, and the second heat dissipation holes are rhombic; the second sealing plate is provided with a fourth heat dissipation area and a second operation column, the second operation column is positioned below the fourth heat dissipation area, the second operation column is a cylinder, and the fourth heat dissipation area is provided with second heat dissipation holes distributed in a matrix manner; the second sealing plate is connected with the second mounting plate in a sliding mode, and the second operation column penetrates through the second operation groove;
the battery cell support is distributed in a matrix manner and comprises a plurality of battery cell support units and a connecting frame, wherein each battery cell support unit comprises a bottom frame, a pressure relief sheet and a support sheet; the underframe comprises a first plate, a second plate, a third plate and a fourth plate, the first plate is of a rectangular frame structure, a square through hole is formed in the center of the first plate, mounting areas are respectively arranged on the upper side and the lower side of the square through hole and comprise a first mounting area and a second mounting area, the first mounting area is provided with four square grooves, the heights of the four square grooves are sequentially increased along the transverse direction of the first plate, the second mounting area is provided with four square grooves, and the heights of the four square grooves are sequentially reduced along the transverse direction of the first plate;
the second plate is of a rectangular frame structure, a square through hole is formed in the center of the second plate, boss areas are respectively arranged on the upper side and the lower side of the square through hole and comprise a first boss area and a second boss area, the first boss area is provided with four square bosses, the heights of the four square bosses are sequentially increased along the transverse direction of the first plate, the second boss area is provided with four square bosses, and the heights of the four square bosses are sequentially decreased along the transverse direction of the first plate;
the third plate is of a rectangular frame structure, a square through hole is formed in the center of the third plate, fixing grooves are formed in the left side and the right side of the square through hole, and the fixing grooves are located above the square through hole; the fixing groove comprises a first groove and second grooves, the first groove is square, the second grooves are square, the two second grooves are positioned in the first groove, and the two second grooves are symmetrical relative to the first groove;
the fourth plate is of a rectangular frame structure, a square through hole is formed in the center of the fourth plate, fixing pieces are arranged on the left side and the right side of the square through hole, and the fixing pieces are located above the square through hole; the fixing piece comprises a fixing table and a third groove, the fixing piece is square, and the third groove is distributed around the upper surface, the left side wall and the right side wall of the fixing piece;
the pressure relief sheet is square, the pressure relief sheet is provided with pressure relief holes, the pressure relief holes are uniformly distributed in an annular shape around the center of the pressure relief sheet, included angles between every two adjacent pressure relief holes are equal, a plurality of pressure relief seams are respectively arranged on a straight line where the circle center of each pressure relief hole and the center of the pressure relief sheet are located, and distances between every two adjacent pressure relief seams on the same straight line are equal;
the connecting frame comprises a first support and a second support, the two first supports are in left-right mirror image, the second support is positioned between the two first supports, and two ends of the second support are respectively fixedly connected with the two first supports;
the first plate, the second plate, the third plate and the fourth plate are respectively fixed with a pressure relief sheet, and the central axes of the four pressure relief sheets are respectively aligned with the central axes of the square holes of the four plates; the left and right surfaces of the third plate and the fourth plate are aligned face to face, the first plate and the second plate are arranged between the third plate and the fourth plate, two ends of the first plate are fixedly connected with the third plate and the fourth plate respectively, two ends of the second plate are fixedly connected with the third plate and the fourth plate respectively to form a cubic frame, four support sheets are fixed at the bottom end of the cubic frame, and the four support sheets are located at four corners of the bottom end of the cubic frame respectively;
the battery cell support units are aligned and distributed in a matrix of multiple rows and columns, two adjacent rows of battery cell support units are connected with the square groove through the matching of the square bosses, and two adjacent rows of battery cell support units are connected through the connecting frame;
the box cover is fixed at the top end of the box body, an electrode connector is arranged on the side wall of the box body, a working groove is arranged in the box body, the working groove is of a hollow structure with an opening at the upper end and a blocked lower end, the projection of the working groove on the horizontal plane is rectangular, the lower end of the working groove is fixed with the bottom plate, the working groove is positioned at the center position of the bottom plate, exhaust fans are arranged in the front, back, left and right directions of the working groove, and the exhaust fans are fixed on the bottom plate through support rods; the electric core support is fixed in the working groove, an electric core is arranged in each electric core support unit, one end of the electric core is placed in the battery groove of one electric core support unit, the electrode at the end of the electric core is exposed out of the electrode groove, the other end of the electric core is placed in the battery groove of the other electric core support unit, the electrode at the end of the electric core is exposed out of the electrode groove, and the nickel band is welded at the electrode groove of the electric core support unit.
The height of the first side plate is H1, and the height of the second side plate is 0.5H1.
The height of the first sealing plate is H2, and the height of the second sealing plate is 0.5H2.
The first plate height is L1, the second plate height is L2, the third plate height is L3, the fourth plate height is L4, and L1= L2= L3= L4.
The first plate length and width are respectively P1 and P2, the second plate length and width are respectively P3 and P4, P1= P3, and P2= P4.
The third plate has a length and a width M1 and M2, the fourth plate has a length and a width M3 and M4, respectively, M1= M3, and M2= M4.
The supporting sheet is in an isosceles triangle shape.
The nickel strap is welded at the electrode groove of the battery cell support unit, so that the positive electrode and the negative electrode of the battery cell are connected with the conductive nickel strap, and the energy output of the battery is realized; the electrode connector is used for leading the communication line of the battery out of the outer box body; when the battery pack works for a period of time and heat dissipation is needed, the first operating column on the side plate is moved, so that the second side plate moves on the first mounting plate, and the first heat dissipation hole in the first side plate is opened; remove the second operation post on the shrouding, make the second shrouding remove on the second mounting panel to second louvre on the first shrouding is opened, and four electric fans are opened, and reinforcing air convection, the heat passes through the louvre and discharges, reaches rapid cooling's effect. When the heat dissipation is not needed, the fan is turned off, and the first operation column and the second operation column are moved at the same time, so that the first heat dissipation hole and the second heat dissipation hole are in a blocking state.
Many other changes and modifications can be made without departing from the spirit and scope of the invention. It is to be understood that the invention is not to be limited to the specific embodiments, but only by the scope of the appended claims.
Claims (7)
1. An air-cooled battery pack with high heat dissipation efficiency is characterized by comprising a box body, a box cover, a battery cell support and a battery cell, wherein the box body is of a hollow structure and comprises side plates, sealing plates and a bottom plate, the two sealing plates are respectively fixed on the left side and the right side of the bottom plate, and the two side plates are respectively fixed on the front side and the rear side of the bottom plate; the side plates comprise a first side plate and a second side plate, the first side plate is sequentially provided with a first heat dissipation area, a first operation groove and a first mounting plate from top to bottom, the first heat dissipation area is provided with first heat dissipation holes distributed in a matrix manner, and the first heat dissipation holes are pentagonal; the second side plate is provided with a second heat dissipation area and a first operation column, the first operation column is positioned below the second heat dissipation area, the first operation column is a cylinder, and the second heat dissipation area is provided with first heat dissipation holes distributed in a matrix manner; the second side plate is connected with the first mounting plate in a sliding mode, and the first operating column penetrates through the first operating groove;
the sealing plate comprises a first sealing plate and a second sealing plate, the first sealing plate is sequentially provided with a third heat dissipation area, a second operation groove and a second mounting plate from top to bottom, the third heat dissipation area is provided with second heat dissipation holes distributed in a matrix manner, and the second heat dissipation holes are rhombic; the second sealing plate is provided with a fourth heat dissipation area and a second operation column, the second operation column is positioned below the fourth heat dissipation area, the second operation column is a cylinder, and the fourth heat dissipation area is provided with second heat dissipation holes distributed in a matrix manner; the second sealing plate is connected with the second mounting plate in a sliding mode, and the second operation column penetrates through the second operation groove;
the battery cell support is distributed in a matrix manner and comprises a plurality of battery cell support units and a connecting frame, wherein each battery cell support unit comprises a bottom frame, a pressure relief sheet and a support sheet; the underframe comprises a first plate, a second plate, a third plate and a fourth plate, the first plate is of a rectangular frame structure, a square through hole is arranged at the center of the first plate, the upper side and the lower side of the square through hole are respectively provided with an installation area, the installation areas comprise a first installation area and a second installation area, the first installation area is provided with four square grooves, the heights of the four square grooves are sequentially increased along the transverse direction of the first plate, the second installation area is provided with four square grooves, and the heights of the four square grooves are sequentially reduced along the transverse direction of the first plate;
the second plate is of a rectangular frame structure, a square through hole is formed in the center of the second plate, boss areas are respectively arranged on the upper side and the lower side of the square through hole and comprise a first boss area and a second boss area, the first boss area is provided with four square bosses, the heights of the four square bosses are sequentially increased along the transverse direction of the first plate, the second boss area is provided with four square bosses, and the heights of the four square bosses are sequentially decreased along the transverse direction of the first plate;
the third plate is of a rectangular frame structure, a square through hole is formed in the center of the third plate, fixing grooves are formed in the left side and the right side of the square through hole, and the fixing grooves are located above the square through hole; the fixing groove comprises a first groove and second grooves, the first groove is square, the second grooves are square, the two second grooves are positioned in the first groove, and the two second grooves are symmetrical relative to the first groove;
the fourth plate is of a rectangular frame structure, a square through hole is formed in the center of the fourth plate, fixing pieces are arranged on the left side and the right side of the square through hole, and the fixing pieces are located above the square through hole; the fixing piece comprises a fixing table and a third groove, the fixing piece is square, and the third groove is distributed around the upper surface, the left side wall and the right side wall of the fixing piece;
the pressure relief sheet is square, the pressure relief sheet is provided with pressure relief holes, the pressure relief holes are uniformly distributed in an annular shape around the center of the pressure relief sheet, included angles between every two adjacent pressure relief holes are equal, a plurality of pressure relief seams are respectively arranged on a straight line where the circle center of each pressure relief hole and the center of the pressure relief sheet are located, and distances between every two adjacent pressure relief seams on the same straight line are equal;
the connecting frame comprises a first support and a second support, the two first supports are in left-right mirror image, the second support is positioned between the two first supports, and two ends of the second support are respectively fixedly connected with the two first supports;
the first plate, the second plate, the third plate and the fourth plate are respectively fixed with a pressure relief sheet, and the central axes of the four pressure relief sheets are respectively aligned with the central axes of the square holes of the four plates; the left and right faces of the third plate and the fourth plate are aligned face to face, the first plate and the second plate are arranged between the third plate and the fourth plate, two ends of the first plate are fixedly connected with the third plate and the fourth plate respectively, two ends of the second plate are fixedly connected with the third plate and the fourth plate respectively to form a cubic frame, four support sheets are fixed at the bottom end of the cubic frame, and the four support sheets are located at four corners of the bottom end of the cubic frame respectively;
the battery cell support units are aligned and distributed in a matrix of multiple rows and columns, two adjacent rows of battery cell support units are connected with the square groove through the matching of the square bosses, and two adjacent rows of battery cell support units are connected through the connecting frame;
the box cover is fixed at the top end of the box body, an electrode connector is arranged on the side wall of the box body, a working groove is arranged in the box body, the working groove is of a hollow structure with an opening at the upper end and a blocked lower end, the projection of the working groove on the horizontal plane is rectangular, the lower end of the working groove is fixed with the bottom plate, the working groove is positioned at the center of the bottom plate, exhaust fans are arranged in the front, back, left and right directions of the working groove, and the exhaust fans are fixed on the bottom plate through support rods; the electric core support is fixed in the working groove, an electric core is arranged in each electric core support unit, one end of the electric core is placed in a battery groove of one electric core support unit, an electrode at the end of the electric core is exposed out of the electrode groove, the other end of the electric core is placed in the battery groove of the other electric core support unit, the electrode at the end of the electric core is exposed out of the electrode groove, and the nickel strap is welded at the electrode groove of the electric core support unit.
2. The air-cooled battery pack with high heat dissipation efficiency as recited in claim 1, wherein the height of the first side plate is H1, and the height of the second side plate is 0.5H1.
3. The air-cooled battery pack with high heat dissipation efficiency as claimed in claim 1, wherein the first cover plate has a height H2, and the second cover plate has a height 0.5H2.
4. The air-cooled battery pack with high heat dissipation efficiency as recited in claim 1, wherein the first plate has a height L1, the second plate has a height L2, the third plate has a height L3, the fourth plate has a height L4, and L1= L2= L3= L4.
5. The air-cooled battery pack with high heat dissipation efficiency as recited in claim 1, wherein the first plate has a length and a width P1 and P2, respectively, and the second plate has a length and a width P3 and P4, respectively, and P1= P3 and P2= P4.
6. The air-cooled battery pack with high heat dissipation efficiency as claimed in claim 1, wherein the third plate has a length and a width of M1 and M2, respectively, the fourth plate has a length and a width of M3 and M4, respectively, M1= M3, and M2= M4.
7. The air-cooled battery pack with high heat dissipation efficiency as recited in claim 1, wherein the support pieces have an isosceles triangle shape.
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| CN112072043A (en) * | 2020-10-10 | 2020-12-11 | 湖北亿纬动力有限公司 | Battery pack |
| CN112736355B (en) * | 2020-12-31 | 2021-09-24 | 华兴通信技术有限公司 | Intelligent energy storage battery pack for 5G communication |
| CN113659234B (en) * | 2021-08-09 | 2023-12-26 | 江苏同芯电气科技有限公司 | Air-cooled high-rate charge-discharge battery pack |
| CN114374027B (en) * | 2022-01-18 | 2023-03-28 | 苏州思运航电子科技有限公司 | Battery pack with integrated protection and control |
| CN114361653B (en) * | 2022-03-03 | 2022-06-21 | 武汉理工大学 | Electric automobile battery detonation emergency treatment device and electric automobile |
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| CN203983371U (en) * | 2014-07-04 | 2014-12-03 | 秦忠新 | Lithium battery core support |
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| CN106784489A (en) * | 2017-01-20 | 2017-05-31 | 江门市大长江集团有限公司 | Battery case, battery core mounting assembly and battery bag |
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| US8293392B2 (en) * | 2009-03-26 | 2012-10-23 | Sanyo Energy (Usa) Corporation | Battery holder for a battery array, and battery array |
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| CN105845854A (en) * | 2015-01-12 | 2016-08-10 | 北京波士顿动力电池有限公司 | Assembly structure of power battery module |
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