CN115411445B - New energy automobile battery pack and manufacturing method thereof - Google Patents

New energy automobile battery pack and manufacturing method thereof Download PDF

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Publication number
CN115411445B
CN115411445B CN202211167096.1A CN202211167096A CN115411445B CN 115411445 B CN115411445 B CN 115411445B CN 202211167096 A CN202211167096 A CN 202211167096A CN 115411445 B CN115411445 B CN 115411445B
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CN
China
Prior art keywords
battery pack
frame
battery
plate
new energy
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CN202211167096.1A
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Chinese (zh)
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CN115411445A (en
Inventor
张坤
朱江勇
栾国红
顾月华
王武威
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Suzhou Dongshan Precision Manufacturing Co Ltd
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Suzhou Dongshan Precision Manufacturing Co Ltd
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Priority to CN202211167096.1A priority Critical patent/CN115411445B/en
Publication of CN115411445A publication Critical patent/CN115411445A/en
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Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/289Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by spacing elements or positioning means within frames, racks or packs
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/60Heating or cooling; Temperature control
    • H01M10/61Types of temperature control
    • H01M10/613Cooling or keeping cold
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/60Heating or cooling; Temperature control
    • H01M10/62Heating or cooling; Temperature control specially adapted for specific applications
    • H01M10/625Vehicles
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/60Heating or cooling; Temperature control
    • H01M10/63Control systems
    • H01M10/633Control systems characterised by algorithms, flow charts, software details or the like
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/60Heating or cooling; Temperature control
    • H01M10/65Means for temperature control structurally associated with the cells
    • H01M10/656Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
    • H01M10/6567Liquids
    • H01M10/6568Liquids characterised by flow circuits, e.g. loops, located externally to the cells or cell casings
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/204Racks, modules or packs for multiple batteries or multiple cells
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/249Mountings; 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
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/271Lids or covers for the racks or secondary casings
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2220/00Batteries for particular applications
    • H01M2220/20Batteries in motive systems, e.g. vehicle, ship, plane
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries

Abstract

The invention relates to a new energy automobile battery pack, which comprises a cover plate, a supporting bottom plate, a first frame, a second frame, a cooling partition plate and a battery pack, wherein the cover plate is arranged on the supporting bottom plate; the cover plate, the supporting bottom plate, the first frame and the second frame are all provided with T-shaped protective structures, and the cover plate, the first frame, the second frame and the supporting bottom plate are fixedly connected together to form a closed structure for accommodating functional components in the battery pack; the inner sides of the first frame and the second frame are respectively provided with a plurality of inserting grooves for limiting the cooling partition plates; a plurality of battery packs connected in series are arranged on the supporting bottom plate and the cooling partition plate, and the protection unit of the T-shaped protection structure comprises a supporting part and a protection part which is of an arc-shaped structure. The battery pack is obtained by means of aluminum alloy extrusion and friction stir welding, is low in cost, high in technical maturity and easy to produce and manufacture in batches, can be manufactured and combined in a modularized mode, can be freely combined according to actual conditions, is convenient to install and detach, and can be reused.

Description

New energy automobile battery pack and manufacturing method thereof
Technical Field
The invention relates to the technical field of new energy automobiles, in particular to a new energy automobile battery pack and a manufacturing method thereof.
Background
With the continuous enhancement of people's environmental protection consciousness, various countries have formulated carbon reduction strategies to protect our earth homeland which is increasingly worsened. At present, new energy automobiles become an important development direction in the automobile field, and with the continuous development of battery technology, the new energy automobiles are becoming more and more popular. Along with the continuous increase of the driving mileage, the energy density of the battery and the number of the battery packs are correspondingly increased, and the battery pack is the most important and heaviest component of the new energy automobile, and the structural form of the battery pack directly influences the service performance of the whole vehicle. The battery pack assembly is light in weight, modularized, functional and higher in cost performance. Firstly, the battery pack is required to have high structural strength, so that an internal battery assembly can be effectively protected, meanwhile, the battery pack is light in weight, and dead weight is reduced to the greatest extent; secondly, the battery pack also has a temperature adjusting function, so that the internal battery is ensured to be always in an optimal temperature interval; meanwhile, the battery pack is easy to install and disassemble, flexible combination is realized, and therefore, the battery pack can be rapidly adapted to different application scenes; finally, the production and the manufacture are easy, the cost is low, and the economy is excellent.
The design of the existing battery pack of the new energy automobile only considers the safety factor, and various frame structures are adopted to protect the battery assembly; or only consider the convenience of replacement, adopt modular design and manufacturing thought; the internal and external heat dissipation of the battery pack does not involve low manufacturing costs. With the continuous development of new energy automobiles, the demand for low-cost battery packs which are light, high-strength, detachable, and have liquid cooling functions is becoming more and more urgent.
Disclosure of Invention
The invention aims to solve the technical problems of designing a new energy automobile battery pack which has the advantages of simple structure, good protection performance, good heat dissipation effect, convenience in production and assembly and convenience in disassembly, and solves the existing technical problems.
In order to solve the technical problems, the new energy automobile battery pack comprises a cover plate, a supporting bottom plate, a first frame group, a second frame group, a cooling partition plate and a battery pack; the upper surface of the cover plate is provided with a T-shaped protective structure, and a high-pressure interface, a low-pressure interface, a total liquid inlet and a total liquid outlet are formed in an opening on the upper surface of the cover plate; the T-shaped protection structure is arranged on the lower surface of the supporting bottom plate, the T-shaped protection structure can prevent external force from damaging the battery pack in the interior during collision, the T-shaped protection structure can also realize air cooling and heat dissipation during vehicle operation, and the heat of the battery pack is emitted through the T-shaped protection structure, so that the battery is ensured to work in a proper temperature range; the first frame group comprises 2 first frames, and the 2 first frames are respectively arranged on one group of opposite edges of the supporting bottom plate; the second frame group comprises 2 second frames, and the 2 second frames are respectively arranged on the other opposite edges of the supporting bottom plate; the outer side surfaces of the first frame and the second frame are respectively provided with a T-shaped protection structure, the T-shaped protection structures can prevent external force from damaging an internal battery pack during collision, air cooling and heat dissipation during vehicle operation can be realized, and heat of the battery pack is dissipated through the T-shaped protection structures, so that the battery can work in a proper temperature range; the cover plate, the first frame group, the second frame group and the supporting bottom plate are fixedly connected together to form a closed structure for accommodating functional components in the battery pack; the cooling partition plate comprises a liquid cooling plate and supporting bars, the supporting bars are fixedly connected to the periphery of the liquid cooling plate, 4 supporting bars surround the four sides of the liquid cooling plate and are welded with the liquid cooling plate together in a friction stir welding mode to form the cooling partition plate, the liquid cooling plate can be one or a plurality of liquid cooling plates are welded into a whole in a friction stir welding mode, the number of the cooling partition plates is at least 1, branch liquid inlets and branch liquid outlets are formed in the liquid cooling plate, the liquid cooling plate is of a hollow structure, a plurality of baffle plates are arranged in the liquid cooling plate, a temperature adjusting medium enters the liquid cooling plate from the branch liquid inlets, flows through cooling channels under the action of the baffle plates, and finally flows out from the branch liquid outlets; the branch liquid inlets on each liquid cooling plate are respectively connected with the total liquid inlets on the cover plate through pipelines, and the branch liquid outlets on each liquid cooling plate are respectively connected with the total liquid outlets on the cover plate through pipelines; the inner sides of the first frame and the second frame are respectively provided with a plurality of inserting grooves for limiting the cooling partition plates; the battery pack cooling device comprises a supporting bottom plate, a cooling partition plate, a plurality of battery packs, a battery pack and a battery pack, wherein the battery packs are arranged on the supporting bottom plate and the cooling partition plate and are connected in series, namely, the positive electrode of the battery pack is connected with the negative electrode of the battery pack adjacent to one side, the negative electrode of the battery pack is connected with the positive electrode of the battery pack adjacent to the other side, the output end of the positive electrode, namely, a high-voltage port and the output end of the negative electrode, namely, a low-voltage port are respectively formed, the battery partition plates are arranged on the supporting bottom plate and the cooling partition plate, and the battery partition plates are used for separating and fixing the adjacent battery packs; the T-shaped protection structure comprises a plurality of protection units, wherein each protection unit comprises a supporting part and a protection part, and each protection part is of an arc-shaped structure.
Further, at least one of the upper end and the lower end of the second frame is provided with a protective strip, a plurality of first fixing strips are arranged on one end face of the protective strip at intervals, the second fixing strips are arranged on two side end faces adjacent to the end face where the first fixing strips are arranged, the protective strip is inserted into a space formed by adjacent protective units of the T-shaped protective structure of the second frame through the first fixing strips, the first fixing strips are fixedly connected with the second frame in a screw connection mode, and the second fixing strips are fixedly connected with the first frame in a screw connection mode. The end face of the first fixing strip is provided with a curved surface structure with the same radian as the T-shaped protective structure of the second frame at intervals, and the curved surface structure corresponds to the T-shaped protective structure of the second frame, so that the novel protective strip is attractive.
Further, the jack groove includes 2 aluminum products that set up from top to bottom, and the position of cooling baffle is defined to interval between 2 aluminum products, cooling baffle is pegged graft respectively in the jack groove internal fixation of first frame and second frame co-altitude through support bar all around.
Further, the length of the battery separator along the second frame is 1/2-1 of the length of the battery pack, preferably, the length of the battery separator along the second frame is 2/3 of the length of the battery pack, so that the fixing of the battery pack can be ensured, the weight can be reduced, the battery separator and the supporting bottom plate, the battery separator and the cooling separator are fixed through screws, the battery separator is an aluminum alloy plate, the thickness of the battery separator is 8-12 mm, and preferably, the thickness of the battery separator is 10 mm.
Further, lifting holes are formed in four corners of the cover plate and used for realizing the transfer of the battery pack.
Further, the temperature of the temperature regulating medium is 10-30 ℃. The temperature regulating medium is water, oil and other fluid, the pressure of the liquid medium is increased by the external pressurizing device, so that the liquid medium flows into the cooling partition plate from the liquid inlet of the branch and flows out from the liquid outlet of the branch, heat generated by the battery pack in the battery pack is taken away, cooling of the battery pack is realized, and the liquid medium can realize cooling and heating of the battery pack. The temperature regulating medium in the pipeline can cool the battery pack in summer with higher external environment temperature, and can keep the battery pack warm in winter with lower external environment temperature, and the temperature of the battery pack is always in the optimal working range by selecting the regulating medium with different temperatures.
Further, be equipped with the accessory plate on at least one first frame in the first frame group, the accessory plate includes the accessory plate body and sets up the connecting portion in accessory plate body both sides, be equipped with the trompil on the accessory plate body, the one end that the accessory plate body was kept away from to connecting portion is equipped with the grafting strip, the accessory plate inserts in the T type protective structure of first frame and is connected fixedly with first frame through the grafting strip at both ends, and the connected mode can be screw connection, also can be the utilization self structure makes the grafting strip tightly fix in the inslot that forms between adjacent protection unit, the accessory plate is fixed on first frame in the middle, and the trompil is used for showing brand LOGO, and when the trompil is the through-hole, brand LOGO is fixed on the first frame of trompil corresponding region, and when the trompil is the blind hole, the brand LOGO is fixed on the trompil, and the accessory plate size designs according to the length of first frame, and its length is generally 1/4 ~ 1 of first frame length, still is equipped with a plurality of grafting strips between the both ends of accessory plate for better fixed accessory plate when length is longer.
The invention also provides a new energy automobile battery pack, which comprises a plurality of battery pack units and connecting clamping grooves, wherein the battery pack units are the new energy automobile battery pack, the battery pack units are placed up and down, the battery pack units are connected and fastened through the connecting clamping grooves, the connecting clamping grooves comprise check blocks, a plurality of connecting strips are symmetrically arranged on the upper side and the lower side of each check block, the second frame groups of two adjacent battery pack units are connected and fixed through the connecting clamping grooves, the connecting strips on the two sides of each check block are respectively inserted into T-shaped protective structures of the second frame groups of the upper and lower adjacent battery pack units, the fastening and the connection of the upper and lower adjacent battery pack units are realized, the middle check block is used for separating the upper and lower adjacent battery pack units, and mutual collision in the running process of a vehicle is prevented.
Further, the two ends of the plugging strip of the auxiliary plate are respectively provided with a first connecting hole, the auxiliary plates of the upper adjacent battery pack unit and the lower adjacent battery pack unit are connected and fixed through the first connecting holes by using the connecting piece, the upper end of the connecting piece is fixed at the first connecting holes at the lower ends of the plugging strip of the upper battery pack unit, the lower end of the connecting piece is fixed at the first connecting holes at the upper ends of the plugging strip of the lower battery pack unit, the auxiliary plates of the upper adjacent battery pack unit and the lower adjacent battery pack unit are connected and fixed, the auxiliary fixing effect between the upper adjacent battery pack unit and the lower adjacent battery pack unit is achieved, and the connecting piece and the first connecting holes are connected through threads.
Further, the upper and lower both ends of auxiliary plate are equipped with corresponding second connecting hole respectively, use the connecting piece to connect the auxiliary plate of two upper and lower adjacent battery package units through the second connecting hole fixedly, and the connecting piece adopts threaded connection with the second connecting hole, plays the effect to further supplementary fixed between the upper and lower adjacent battery package unit.
Further, the second frame lower extreme of bottom battery package unit is equipped with the protection strip, and the second frame upper end of top battery package unit is equipped with the protection strip, realizes the protection to both ends about the battery package.
Further, the cover plate is manufactured by adopting an aluminum alloy extrusion mode, if the extrusion mode is difficult to process at one time, a plurality of cover plates can be manufactured by adopting a friction stir welding mode, and the length of the cover plate is preferably 0.3-m-1.5 m, and the width of the cover plate is preferably 1.8-m-3.0 m. The cooling partition plate is an extruded section of aluminum alloy, so that the cooling partition plate can support and fix a battery pack mounted on the cooling partition plate, and can realize temperature regulation of the battery pack, and the battery pack can work in a proper temperature range. The supporting bottom plate is the base of whole battery package for support the weight of whole battery package, supporting bottom plate is aluminum alloy extrusion section bar. The first frame and the second frame are all extruded profiles of aluminum alloy.
The invention also provides a manufacturing method of the new energy automobile battery pack, which comprises the following steps:
step S1: the supporting bottom plate is connected and fastened with the first frame on one side through threads, so that the first frame is vertical to the supporting bottom plate;
step S2: fastening the fixed supporting bottom plate and the first frame on one side and the second frames on two sides in the step S1 through screws to ensure that the second frames on two sides are vertical to the bottom plate, and keeping the second frames vertical to the first frames;
step S3: sequentially placing the corresponding battery packs to the corresponding positions of the supporting bottom plate according to a set sequence to form a first layer of battery pack;
step S4: sequentially connecting the positive electrode and the negative electrode of adjacent battery packs in the first layer of battery packs through wires to form an output end of the positive electrode, namely a high-voltage port, and an output end of the negative electrode, namely a low-voltage port;
step S5: the first layer cooling partition board is inserted into the corresponding inserting grooves of the second frame and the 2 first frames, and is fastened through threads of the second frame and the first frame, so that the first layer cooling partition board, the second frame and the first frame are fixed and form an integral structure;
step S6: sequentially placing the second-layer battery packs to the corresponding positions of the first-layer cooling partition plates according to the corresponding sequence to form second-layer battery packs;
step S7: sequentially connecting the positive electrode and the negative electrode of adjacent battery packs in the second layer of battery packs through wires to form an output end of the positive electrode, namely a high-voltage port, and an output end of the negative electrode, namely a low-voltage port;
step S8: repeating the steps S5-S7 to respectively place the rest cooling partition boards and the battery packs until the installation of all the cooling partition boards and the battery packs is completed;
step S9: assembling the other first frame and the structural body formed by combining the steps S1-S8, and fastening the structural body by screws to ensure that the second frame is parallel to the other second frame, the second frame is vertical to the 2 first frames, and the second frame is vertical to the supporting bottom plate;
step S10: connecting the high-voltage port and the low-voltage port of each layer of battery pack to the high-voltage interface and the low-voltage interface of the battery pack through wires;
step S11: the branch liquid inlets of each layer of cooling partition plates are respectively connected with the total liquid inlets on the cover plate by utilizing pipelines, and the branch liquid outlets of each layer of cooling partition plates are respectively connected with the total liquid outlets on the cover plate;
step S12: and (3) assembling the cover plate and the battery pack structure formed in the step (S11), and finally forming a complete battery pack through threaded connection and fastening.
Further, the method also comprises the following steps:
step S13: inserting the connecting clamping grooves into T-shaped protective structures outside the second frames at two sides of the battery pack;
step S14: lifting the second assembled battery pack to the position above the first battery pack;
step S15: slowly moving the lifted battery pack to enable the clamping grooves on two sides to be just inserted into the T-shaped protective structure outside the corresponding second frame;
step S16: and repeating the steps S13 to S15 to realize the combination of a plurality of battery packs.
Further, the method also comprises the following steps:
step S17: and a protective strip is arranged at the lower ends of the second frames at two sides of the bottom battery pack unit and the upper ends of the second frames at two sides of the top battery pack unit, so that the bottom and the top of the battery pack are protected.
Further, the method also comprises the following steps: and the auxiliary plates of the upper adjacent battery pack unit and the lower adjacent battery pack unit are fixedly connected through a first connecting hole at the upper end of the plugging strip of the N-1 layer battery pack unit and a first connecting hole at the lower end of the plugging strip of the N layer battery pack unit by using a connecting piece, wherein N is the total number of the battery pack units, and N is more than or equal to 2.
Further, the method also comprises the following steps: and connecting and fixing the auxiliary plates of the upper and lower adjacent battery pack units through a second connecting hole at the upper end of the auxiliary plate of the N-1 layer battery pack unit and a second connecting hole at the lower end of the auxiliary plate of the N layer battery pack unit by using a connecting piece, wherein N is the total number of the battery pack units, and N is more than or equal to 2.
The battery pack of the new energy automobile has the advantages of simple structure, good protection effect, capability of controlling the temperature of the battery pack to be always in the optimal working range, low cost, high technical maturity, easiness in mass production and manufacture, capability of realizing modularized processing and combination, capability of freely combining according to actual conditions, convenience in installation and disassembly and capability of realizing repeated use, and is obtained by adopting an aluminum alloy extrusion and friction stir welding mode.
Drawings
The following description of the embodiments of the invention is further defined by reference to the accompanying drawings.
FIG. 1 is a schematic structural view of a battery pack for a new energy automobile according to the present invention;
fig. 2 is a schematic diagram of the internal structure of the battery pack for the new energy automobile of the present invention;
FIG. 3 is a schematic view of a T-shaped protection structure of the battery pack of the new energy automobile;
FIG. 4 is an enlarged schematic view of FIG. 3 at A;
FIG. 5 is a schematic view of a cooling separator of the new energy vehicle battery pack of the present invention;
fig. 6 is a schematic diagram of a front view structure of a first frame (a second frame set) of the battery pack of the new energy automobile according to the present invention;
fig. 7 is a schematic side view of a first frame (a second frame set) of the battery pack for a new energy vehicle according to the present invention;
FIG. 8 is an enlarged schematic view at B in FIG. 1;
fig. 9 is a schematic structural view of a connection slot of the battery pack of the new energy automobile of the present invention;
fig. 10 is a schematic structural view of an auxiliary plate of the battery pack for the new energy automobile of the present invention;
fig. 11 is a schematic structural view of a new energy automobile battery pack of the present invention assembled by stacking a plurality of battery packs.
A cover plate 1; a support base plate 2; a first frame 31; a second frame 32; a cooling partition 4; a liquid cooling plate 41; a support bar 42; a battery pack 5; a protection unit 6; a support portion 61; a guard 62; a battery separator 7; a plug-in groove 8; an aluminum material 81; a connection clamping groove 9; a stopper 91; a connecting bar 92; a guard bar 10; the method comprises the steps of carrying out a first treatment on the surface of the A first fixing bar 101; a second fixing bar 102; a total liquid inlet 11; a total liquid outlet 12; a branch liquid inlet 13; a branch liquid outlet 14; a baffle 15; a high voltage interface 16; a low-pressure interface 17; a lifting hole 18; an opening 19; a plug strip 20; a first connection hole 211; a second connection hole 212; an auxiliary board 100; an auxiliary plate body 1001; a connection portion 1002; .
Description of the embodiments
Examples
Referring to fig. 1 to 10, the new energy automobile battery pack of the present invention includes a cover plate 1, a support bottom plate 2, a first frame group, a second frame group, a cooling partition plate 4 and a battery pack 5; the upper surface of the cover plate 1 is provided with a T-shaped protective structure, and the upper surface of the cover plate 1 is provided with a high-pressure interface 16, a pressure interface 17, a total liquid inlet 11 and a total liquid outlet 12; the T-shaped protection structure is arranged on the lower surface of the supporting bottom plate 2, the T-shaped protection structure can prevent external force from damaging the internal battery pack 5 during collision, the T-shaped protection structure can also realize air cooling and heat dissipation during vehicle operation, and the heat of the battery pack 5 is emitted through the T-shaped protection structure, so that the battery is ensured to work in a proper temperature range; the first frame group comprises 2 first frames 31,2 first frames 31 which are respectively arranged on one group of opposite sides of the supporting bottom plate 2; the second frame group comprises 2 second frames 32, and the 2 second frames 32 are respectively arranged on the other opposite sides of the supporting bottom plate 2; the outer side surfaces of the first frame 31 and the second frame 32 are respectively provided with a T-shaped protection structure, the T-shaped protection structures can prevent external force from damaging the internal battery pack 5 during collision, and can also realize air cooling and heat dissipation during vehicle operation, and the heat of the battery pack 5 is dissipated through the T-shaped protection structures, so that the battery is ensured to work in a proper temperature range; the cover plate 1, the first frame group, the second frame group and the supporting bottom plate 2 are fixedly connected together to form a closed structure for accommodating functional components in the battery pack; the cooling partition plate 4 comprises a liquid cooling plate 41 and supporting bars 42, the periphery of the liquid cooling plate 41 is fixedly connected with supporting bars 42,4, the supporting bars 42 surround four sides of the liquid cooling plate 41, the liquid cooling plate 41 and the liquid cooling plate 41 are welded together in a friction stir welding mode to form the cooling partition plate 4, the liquid cooling plate 41 can be one or a plurality of liquid cooling plates 41 are welded together in a friction stir welding mode to form a whole, the number of the cooling partition plates 4 is at least 1, branch liquid inlets 13 and branch liquid outlets 14 are formed in the liquid cooling plate 41, the liquid cooling plate 41 is of a hollow structure, a plurality of baffle plates 15 are arranged in the liquid cooling plate 41, a temperature adjusting medium enters the liquid cooling plate 41 from the branch liquid inlets 13, flows through a cooling channel under the action of the baffle plates 15, and finally flows out from the branch liquid outlets 14; the branch liquid inlets 13 on each liquid cooling plate 41 are respectively connected with the total liquid inlets 11 on the cover plate 1 through pipelines, and the branch liquid outlets 14 on each liquid cooling plate 41 are respectively connected with the total liquid outlets 12 on the cover plate 1 through pipelines; a plurality of inserting grooves 8 are respectively arranged on the inner sides of the first frame 31 and the second frame 32 and used for limiting the cooling partition plate 4; the plurality of battery packs 5 are arranged on the supporting bottom plate 2 and the cooling partition plate 4, the battery packs 5 are connected in series, namely, the positive electrode of each battery pack 5 is connected with the negative electrode of the adjacent battery pack 5 on one side, the negative electrode of each battery pack 5 is connected with the positive electrode of the adjacent battery pack 5 on the other side, the output end of the positive electrode, namely, a high-voltage port and the output end of the negative electrode, namely, a low-voltage port are respectively formed, the battery partition plates 7 are arranged on the supporting bottom plate 2 and the cooling partition plate 4, and the battery partition plates 7 are used for separating and fixing the adjacent battery packs 5; the T-shaped protection structure comprises a plurality of protection units 6, wherein each protection unit 6 comprises a supporting part 61 and a protection part 62, and each protection part 62 is of an arc-shaped structure.
In this embodiment, preferably, at least one of the upper and lower ends of the second frame 32 is provided with a protection strip 10, an end surface of the protection strip 10 is provided with a plurality of first fixing strips 101 at intervals, two side end surfaces adjacent to the end surface provided with the first fixing strips 101 are all provided with second fixing strips 102, the protection strip 10 is inserted into a space formed by adjacent protection units 6 of a T-shaped protection structure of the second frame 32 through the first fixing strips 101, the first fixing strips 101 are fixedly connected with the second frame 32 in a screw connection manner, the second fixing strips 102 are fixedly connected with the first frame 31 in a screw connection manner. The end face of the first fixing strip 101 of the protective strip 10 is provided with a curved surface structure with the same radian as the T-shaped protective structure of the second frame 32 at intervals, and the curved surface structure corresponds to the T-shaped protective structure of the second frame 32, so that the protective strip is attractive.
In this embodiment, preferably, the plugging slot 8 includes 2 aluminum materials 81,2 aluminum materials 81 arranged up and down, the space between the 2 aluminum materials 81,2 aluminum materials 81 defines the position of the cooling partition board 4, and the cooling partition board 4 is respectively plugged into the plugging slots 8 with the heights of the first frame 31 and the second frame 32 through the surrounding supporting bars 42 and fixed.
In this embodiment, the length of the battery separator 7 along the second frame 32 is preferably 1/2-1 of the length of the battery pack 5, preferably, the length of the battery separator 7 along the second frame 32 is 2/3 of the length of the battery pack 5, so that the fixing of the battery pack 5 is ensured, the weight can be reduced, the battery separator 7 is fixed with the supporting base plate 2, the battery separator 7 and the cooling separator 4 through screws, the battery separator 7 is an aluminum alloy plate, the thickness of the battery separator 7 is 8-12 mm, preferably, the thickness of the battery separator 7 is 10 mm.
In this embodiment, preferably, lifting holes 18 are formed at four corners of the cover plate 1, so as to implement the transportation of the battery pack.
In this embodiment, the temperature of the temperature-adjusting medium is preferably 10 to 30 ℃. The temperature regulating medium is fluid such as water and oil, the pressure of the liquid medium is increased by an external pressurizing device, so that the liquid medium flows into the cooling partition plate 4 from the branch liquid inlet 13 and flows out from the branch liquid outlet 14, heat generated by the battery pack 5 in the battery pack is taken away, the battery pack 5 is cooled, and the liquid medium can realize the cooling and heating of the battery pack 5. The temperature regulating medium in the pipeline can cool the battery pack 5 in the battery pack in summer with higher external environment temperature, and can keep the battery pack 5 warm in winter with lower external environment temperature, and the temperature of the battery pack 5 is always in the optimal working range by selecting the regulating medium with different temperatures.
In this embodiment, preferably, the auxiliary board 100 is disposed on at least one first frame 31 in the first frame group, the auxiliary board 100 includes an auxiliary board body 1001 and connection portions 1002 disposed on two sides of the auxiliary board body 1001, the auxiliary board body 1001 is provided with an opening 19, one end of the connection portion 1002, which is far away from the auxiliary board body 1001, is provided with a plugging strip 20, the auxiliary board 100 is inserted into the T-shaped protection structure of the first frame 31 through the plugging strips 20 on two ends and is fixedly connected with the first frame 31, the connection manner may be a screw connection, or a self structure is utilized to enable the plugging strips 20 to be tightly fixed in a groove formed between adjacent protection units 6, the auxiliary board 100 is centrally fixed on the first frame 31, the opening 19 is used for displaying a brand LOGO, when the opening 19 is a through hole, the brand LOGO is fixed on the first frame 31 in a region corresponding to the opening 19, when the opening 19 is a blind hole, the brand LOGO is fixed on the opening 19, the auxiliary board 100 is designed according to the length of the first frame 31, its length is generally the length of the first frame 31 to be 1/4, preferably the length of the auxiliary board 100 is better than the auxiliary board 100 is provided for connecting the auxiliary board 1 and the auxiliary board 100 is preferably connected with the auxiliary board 1.
In this embodiment, the cover plate 1 is preferably manufactured by using an aluminum alloy extrusion method, if the extrusion method is difficult to process at one time, a plurality of cover plates 1 can be manufactured by adopting a friction stir welding method, and preferably, the length of the cover plate 1 is 0.3 m-1.5 m, and the width is 1.8 m-3.0 m. The cooling partition plate 4 is an extruded section of aluminum alloy, so that the battery pack 5 mounted on the cooling partition plate can be supported and fixed, the temperature of the battery pack 5 can be regulated, and the battery pack 5 can be ensured to work in a proper temperature range. The supporting bottom plate 2 is the base of whole battery package for support the weight of whole battery package, supporting bottom plate 2 is aluminum alloy extrusion section bar. The first frame 31 and the second frame 32 are all extruded aluminum alloy profiles.
In this embodiment, the battery pack 5 is preferably rectangular, and has a long side parallel to the second frame 32 and a short side parallel to the first frame 31. The internal structure of the battery pack can be 2 layers, 3 layers, 4 layers and the like, and the N-layer battery pack structure needs N-1 layers of cooling partition plates 4.
The cover plate 1, the supporting bottom plate 2, the first side frame 31 and the second side frame 32 of the new energy automobile battery pack of the embodiment are all provided with T-shaped protection structures, the T-shaped protection structures can absorb energy during external force collision through the supporting portions 61 and the protection portions 62, the battery pack 5 inside the battery pack can be protected when the battery pack is subjected to external force collision, the heat radiating area is further increased through the T-shaped protection structure supporting portions 61 and the protection portions 62, air cooling and heat radiation during vehicle operation can be achieved, heat of the battery pack 5 is emitted through the T-shaped protection structures, and the battery is ensured to work in a proper temperature range. In addition, when the battery pack works, the temperature regulating medium is respectively sent to the branch liquid inlets 13 of the cooling partition boards 4 from the total liquid inlet 11 through the external pressurizing device, enters the corresponding liquid cooling plates 41 through the branch liquid inlets 13, flows out of the branch liquid outlets 14 after heat exchange through the channels under the action of the baffle plate 15, and returns to the total liquid outlet 12 through the pipelines, so that the temperature management of the battery can be realized according to the use environment, and the battery is ensured to be in an optimal working state. The overlapping and fixing of a plurality of battery packs can also be realized through the T-shaped protective structures of the first frame 31 and the second frame 32.
The battery pack of the new energy automobile has the advantages of simple structure, good protection effect, capability of controlling the temperature of the battery pack 5 to be always in the optimal working range, low cost, high technical maturity, easiness in mass production and manufacture, capability of realizing modularized processing and combination, capability of freely combining according to actual conditions, convenience in installation and disassembly and capability of realizing repeated use, and is obtained by adopting an aluminum alloy extrusion and friction stir welding mode.
Examples
As shown in fig. 11, the present invention further provides a new energy automobile battery pack, including a plurality of battery pack units and a connection clamping groove 9, where the battery pack units are the new energy automobile battery pack, the battery pack units are placed up and down, the battery pack units are connected and fastened through the connection clamping groove 9, the connection clamping groove 9 includes a stop block 91, a plurality of connection strips 92 are symmetrically disposed on the upper and lower sides of the stop block 91, the second frame groups of two adjacent battery pack units are connected and fixed with the second frame groups through the connection clamping groove 9, the connection strips 92 on the two sides of the stop block 91 are respectively inserted into T-shaped protection structures of the second frame groups of the upper and lower adjacent battery pack units, fastening and connection of the upper and lower adjacent battery pack units are achieved, the middle stop block 91 is used for separation of the upper and lower adjacent battery pack units, and mutual collision in the running process of the vehicle is prevented. In this embodiment, the outer surface of the stopper 91 is provided with curved surface structures with the same radian as the T-shaped protective structure of the second frame 32 at intervals, and the curved surface structures correspond to the T-shaped protective structure of the second frame 32, and are visually connected into a whole, so that the appearance is more attractive. In this embodiment, preferably, the two ends of the plugging strip 20 of the auxiliary plate 100 are respectively provided with a first connecting hole 211, the auxiliary plates 100 of the upper and lower adjacent battery pack units are fixedly connected through the first connecting holes 211 by using a connecting piece, the upper ends of the connecting piece are fixed to the first connecting holes 211 at the lower ends of the plugging strip 20 of the upper battery pack unit, the lower ends of the connecting piece are fixed to the first connecting holes 211 at the upper ends of the plugging strip 20 of the lower battery pack unit, the connection and the fixation between the auxiliary plates 100 of the upper and lower adjacent battery pack units are realized, the auxiliary fixation between the upper and lower adjacent battery pack units is realized, and the connecting piece and the first connecting holes 211 are connected by adopting threads.
In this embodiment, preferably, the upper and lower ends of the auxiliary plate 100 are respectively provided with corresponding second connecting holes 212, and the auxiliary plate 100 of the upper and lower adjacent battery pack units is connected and fixed by using a connecting piece through the second connecting holes 212, and the connecting piece is connected with the second connecting holes 212 by adopting threads, so as to play a role in further assisting in fixing the upper and lower adjacent battery pack units.
In this embodiment, preferably, the protection bar 10 is disposed at the lower end of the second frame 32 of the bottom battery pack unit, and the protection bar 10 is disposed at the upper end of the second frame 32 of the top battery pack unit, so as to protect the upper and lower ends of the battery pack.
Examples
The invention also provides a manufacturing method of the new energy automobile battery pack, which comprises the following steps:
step S1: the supporting bottom plate 2 is connected with the first side frame 31 on one side through threads and fastened, so that the first side frame 31 is vertical to the supporting bottom plate 2;
step S2: fastening the support bottom plate 2 and the first frame 31 on one side which are already fixed in the step S1 with the second frames 32 on two sides through screws, so as to ensure that the second frames 32 on two sides are vertical to the bottom plate, and the second frames 32 are also vertical to the first frames 31;
step S3: sequentially placing the corresponding battery packs 5 to the corresponding positions of the supporting bottom plate 2 according to a set sequence to form a first layer of battery packs 5;
step S4: sequentially connecting the positive and negative electrodes of adjacent battery packs 5 in the first layer of battery packs 5 through wires to form an output end of the positive electrode, namely a high-voltage port, and an output end of the negative electrode, namely a low-voltage port;
step S5: the first layer of cooling partition plate 4 is inserted into the corresponding inserting grooves 8 of the second frame 32 and the 2 first frames 31, and the first layer of cooling partition plate 4, the second frame 32 and the first frame 31 are fixed through the screw threads of the second frame 32 and the first frame 31 to form an integral structure;
step S6: sequentially placing the second-layer battery packs 5 to the corresponding positions of the first-layer cooling partition plates 4 according to the corresponding sequence to form the second-layer battery packs 5;
step S7: sequentially connecting the positive electrode and the negative electrode of the adjacent battery packs 5 in the second layer of battery packs 5 through wires to form an output end of the positive electrode, namely a high-voltage port, and an output end of the negative electrode, namely a low-voltage port;
step S8: repeating the steps S5-S7 to respectively place the residual cooling partition boards 4 and the battery packs 5 until the installation of all the cooling partition boards 4 and the battery packs 5 is completed;
step S9: assembling the other first frame 31 and the structure body formed by combining the steps S1-S8, and fastening the other first frame 31 and the structure body by screws to ensure that the second frame 32 is parallel to the other second frame 32, the second frame 32 is vertical to the 2 first frames 31, and the second frame 32 is vertical to the supporting bottom plate 2;
step S10: connecting the high-voltage port and the low-voltage port of each layer of battery pack 5 to the high-voltage interface 16 and the low-voltage interface 17 of the battery pack through wires;
step S11: the branch liquid inlets 13 of each layer of cooling partition plates 4 are respectively connected with the total liquid inlets 11 on the cover plate 1 by pipelines, and the branch liquid outlets 14 of each layer of cooling partition plates 4 are respectively connected with the total liquid outlets 12 on the cover plate 1;
step S12: the cover plate 1 is assembled with the battery pack structure formed in the step S11, and is connected and fastened through threads, so that a complete battery pack is finally formed.
The embodiment preferably further comprises the following steps:
step S13: the connecting clamping groove 9 is inserted into the T-shaped protection structure outside the second frames 32 on the two sides of the battery pack;
step S14: lifting the second assembled battery pack to the position above the first battery pack;
step S15: the lifted battery pack is slowly moved, so that the connecting clamping grooves 9 on two sides are just inserted into the T-shaped protective structures outside the corresponding second frames 32;
step S16: and repeating the steps S13 to S15 to realize the combination of a plurality of battery packs.
The embodiment preferably further comprises the following steps:
step S17: the guard bar 10 is installed at the lower ends of the second frames 32 at both sides of the bottom battery pack unit and the upper ends of the second frames 32 at both sides of the top battery pack unit.
The embodiment preferably further comprises the following steps: the auxiliary plates 100 of the upper and lower adjacent battery pack units are fixedly connected through a first connecting hole 211 at the upper end of the plugging strip 20 of the N-1 layer battery pack unit and a first connecting hole 211 at the lower end of the plugging strip 20 of the N layer battery pack unit by using a connecting piece, wherein N is the total number of the battery pack units, and N is more than or equal to 2.
The embodiment preferably further comprises the following steps: the auxiliary plates 100 of the upper and lower adjacent battery pack units are connected and fixed by using a connecting piece through a second connecting hole 212 at the upper end of the auxiliary plate 100 of the N-1 layer battery pack unit and a second connecting hole 212 at the lower end of the auxiliary plate 100 of the N layer battery pack unit, wherein N is the total number of the battery pack units, and N is more than or equal to 2.
In the above description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The foregoing description is only of a preferred embodiment of the invention, which can be practiced in many other ways than as described herein, so that the invention is not limited to the specific implementations disclosed above. While the foregoing disclosure has been described with reference to certain embodiments, it will be understood by those skilled in the art that various changes and modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. Any simple modification, equivalent variation and modification of the above embodiments according to the technical substance of the present invention without departing from the technical solution of the present invention still falls within the scope of the technical solution of the present invention.

Claims (13)

1. The utility model provides a new energy automobile battery package which characterized in that: the solar cell comprises a cover plate (1), a supporting bottom plate (2), a first frame group, a second frame group, a cooling partition plate (4) and a battery pack (5); the upper surface of the cover plate (1) is provided with a T-shaped protective structure, and a high-pressure interface (16), a low-pressure interface (17), a total liquid inlet (11) and a total liquid outlet (12) are formed in an opening on the upper surface of the cover plate (1); the lower surface of the supporting bottom plate (2) is provided with a T-shaped protection structure; the first frame group comprises 2 first frames (31), and the 2 first frames (31) are respectively arranged on one group of opposite edges of the supporting bottom plate (2); the second frame group comprises 2 second frames (32), and the 2 second frames (32) are respectively arranged on the other opposite edges of the supporting bottom plate (2); the outer side surfaces of the first frame (31) and the second frame (32) are respectively provided with a T-shaped protection structure; the cover plate (1) is fixedly connected with the first frame group, the second frame group and the supporting bottom plate (2) to form a closed structure together for accommodating functional components in the battery pack; the cooling partition plate (4) comprises liquid cooling plates (41) and supporting bars (42), the supporting bars (42) are fixedly connected to the periphery of the liquid cooling plates (41), the number of the cooling partition plates (4) is at least 1, branch liquid inlet openings (13) and branch liquid outlet openings (14) are formed in the liquid cooling plates (41), the liquid cooling plates (41) are of hollow structures, a plurality of baffle plates (15) are arranged in the liquid cooling plates (41), a temperature adjusting medium enters the liquid cooling plates (41) from the branch liquid inlet openings (13), flows through cooling channels under the action of the baffle plates (15), and finally flows out from the branch liquid outlet openings (14); the branch liquid inlets (13) on the liquid cooling plates (41) are respectively connected with the total liquid inlets (11) on the cover plate (1) through pipelines, and the branch liquid outlets (14) on the liquid cooling plates (41) are respectively connected with the total liquid outlets (12) on the cover plate (1) through pipelines; a plurality of inserting grooves (8) are respectively arranged on the inner sides of the first frame (31) and the second frame (32) and used for limiting the cooling partition board (4); a plurality of battery packs (5) are arranged on the supporting bottom plate (2) and the cooling partition plate (4), the battery packs (5) are connected in series, battery partition plates (7) are arranged on the supporting bottom plate (2) and the cooling partition plate (4), and the battery partition plates (7) are used for separating and fixing adjacent battery packs (5); the T-shaped protection structure comprises a plurality of protection units (6), wherein each protection unit (6) comprises a supporting part (61) and a protection part (62), and each protection part (62) is of an arc-shaped structure;
at least one of the upper end and the lower end of the second frame (32) is provided with a protective strip (10), one end surface of the protective strip (10) is provided with a plurality of first fixing strips (101) at intervals, two side end surfaces adjacent to the end surface provided with the first fixing strips (101) are respectively provided with a second fixing strip (102), the protective strip (10) is inserted into a space formed by adjacent protective units (6) of a T-shaped protective structure of the second frame (32) through the first fixing strips (101), the first fixing strips (101) are fixedly connected with the second frame (32), and the second fixing strips (102) are fixedly connected with the first frame (31);
the plug-in groove (8) comprises 2 aluminum materials (81) which are arranged up and down, the positions of the cooling partition plates (4) are defined by the intervals between the 2 aluminum materials (81), and the cooling partition plates (4) are respectively plugged into the plug-in grooves (8) with the heights of the first frame (31) and the second frame (32) through surrounding supporting bars (42) for fixation;
be equipped with auxiliary plate (100) on at least one first frame (31) in the first frame group, auxiliary plate (100) are including auxiliary plate body (1001) and connecting portion (1002) of setting in auxiliary plate body (1001) both sides, be equipped with trompil (19) on auxiliary plate body (1001), one end that auxiliary plate body (1001) was kept away from to connecting portion (1002) is equipped with grafting strip (20), auxiliary plate (100) are inserted in the T type protective structure of first frame (31) and are connected fixedly with first frame (31) through grafting strip (20) at both ends.
2. The new energy automobile battery pack according to claim 1, wherein: the length of the battery separator (7) along the second frame (32) is 1/2-1 of the length of the battery pack (5).
3. The new energy automobile battery pack according to claim 1, wherein: lifting holes (18) are formed in four corners of the cover plate (1).
4. The new energy automobile battery pack according to claim 1, wherein: the temperature of the temperature regulating medium is 10-30 ℃.
5. The utility model provides a new energy automobile battery package which characterized in that: including a plurality of battery package units and connection draw-in groove (9), battery package unit is the new energy automobile battery package of any one of claims 1-4, and battery package unit is placed from top to bottom, connects the fastening through connection draw-in groove (9) between the battery package unit, and connection draw-in groove (9) include dog (91), dog (91) upper and lower bilateral symmetry is provided with a plurality of connecting strips (92), connects fixedly through connection draw-in groove (9) between the second frame group and the second frame group of two adjacent battery package units, and connecting strips (92) of dog (91) both sides insert respectively in the T type protective structure of the first frame group of two adjacent battery package units about realizing the fastening and the connection of two adjacent battery package units about, and middle dog (91) are used for the separation of two adjacent battery package units about.
6. The new energy automobile battery pack according to claim 5, wherein: the two ends of the plugging strip (20) of the auxiliary plate (100) are respectively provided with a first connecting hole (211), and the auxiliary plates (100) of the upper adjacent battery pack unit and the lower adjacent battery pack unit are connected and fixed through the first connecting holes (211) by using a connecting piece.
7. The new energy automobile battery pack according to claim 5, wherein: the upper end and the lower end of the auxiliary plate (100) are respectively provided with corresponding second connecting holes (212), and the auxiliary plates (100) of the upper adjacent battery pack unit and the lower adjacent battery pack unit are connected and fixed through the second connecting holes (212) by using connecting pieces.
8. The new energy automobile battery pack according to claim 5, wherein: the lower end of the second frame (32) of the bottom battery pack unit is provided with a protective strip (10), and the upper end of the second frame (32) of the top battery pack unit is provided with the protective strip (10).
9. A method for manufacturing the new energy automobile battery pack according to any one of claims 1 to 4, characterized in that: the method comprises the following steps:
step S1: the supporting bottom plate (2) is connected with the first side frame (31) on one side through threads and fastened, so that the first side frame (31) is vertical to the supporting bottom plate (2);
step S2: fastening the fixed supporting bottom plate (2) and the first side frame (31) on one side in the step S1 with the second side frames (32) on two sides through screws to ensure that the second side frames (32) on two sides are vertical to the bottom plate, and keeping the second side frames (32) vertical to the first side frames (31);
step S3: sequentially placing the corresponding battery packs (5) to the corresponding positions of the supporting bottom plate (2) according to a set sequence to form a first layer of battery packs (5);
step S4: the positive and negative poles of adjacent battery packs (5) in the first layer of battery packs (5) are sequentially connected through wires to form an output end of the positive pole, namely a high-voltage port, and an output end of the negative pole, namely a low-voltage port;
step S5: the first layer cooling partition board (4) is inserted into the corresponding inserting grooves (8) of the second frame (32) and the 2 first frames (31), and is fastened through the threads of the second frame (32) and the first frames (31), so that the first layer cooling partition board (4) is fixed with the second frame (32) and the first frames (31) to form an integral structure;
step S6: sequentially placing the second-layer battery packs (5) to corresponding positions of the first-layer cooling partition plates (4) according to corresponding sequences to form the second-layer battery packs (5);
step S7: the positive and negative poles of adjacent battery packs (5) in the second layer of battery packs (5) are sequentially connected through wires to form an output end of the positive pole, namely a high-voltage port, and an output end of the negative pole, namely a low-voltage port;
step S8: repeating the steps S5-S7 to respectively place the residual cooling partition boards (4) and the battery packs (5) until the installation of all the cooling partition boards (4) and the battery packs (5) is completed;
step S9: assembling the other first frame (31) and the structure body formed by combining the steps S1-S8 and fastening the other first frame with screws to ensure that the second frame (32) is parallel to the other second frame (32), the second frame (32) is vertical to the 2 first frames (31), and the second frame (32) is vertical to the supporting bottom plate (2);
step S10: connecting the high-voltage port and the low-voltage port of each layer of battery pack (5) to the high-voltage interface (16) and the low-voltage interface (17) of the battery pack through wires;
step S11: the branch liquid inlets (13) of each layer of cooling partition plates (4) are respectively connected with the total liquid inlets (11) on the cover plate (1) by pipelines, and the branch liquid outlets (14) of each layer of cooling partition plates (4) are respectively connected with the total liquid outlets (12) on the cover plate (1);
step S12: and (3) assembling the cover plate (1) and the battery pack structure formed in the step S11, and finally forming a complete battery pack through threaded connection and fastening.
10. The method for manufacturing a battery pack for a new energy automobile according to claim 9, wherein: the method also comprises the following steps:
step S13: the connecting clamping groove (9) is inserted into a T-shaped protection structure outside the second frames (32) at two sides of the battery pack;
step S14: lifting the second assembled battery pack to the position above the first battery pack;
step S15: slowly moving the lifted battery pack to enable the connecting clamping grooves (9) on two sides to be just inserted into the corresponding T-shaped protective structure;
step S16: and repeating the steps S13 to S15 to realize the combination of a plurality of battery packs.
11. The method for manufacturing a battery pack for a new energy automobile according to claim 10, wherein: the method also comprises the following steps:
step S17: and the lower ends of the second frames (32) at the two sides of the bottom battery pack unit and the upper ends of the second frames (32) at the two sides of the top battery pack unit are provided with the protective strips (10).
12. The method for manufacturing a battery pack for a new energy automobile according to claim 11, wherein: the method also comprises the following steps: the auxiliary plates (100) of the upper and lower adjacent battery pack units are fixedly connected through a first connecting hole (211) at the upper end of the plugging strip (20) of the N-1 layer battery pack unit and a first connecting hole (211) at the lower end of the plugging strip (20) of the N layer battery pack unit by using a connecting piece, wherein N is the total number of the battery pack units, and N is more than or equal to 2.
13. The method for manufacturing a battery pack for a new energy automobile according to claim 11, wherein: the method also comprises the following steps: and connecting and fixing the auxiliary plates (100) of the upper and lower adjacent battery pack units through a second connecting hole (212) at the upper end of the auxiliary plate (100) of the N-1 layer battery pack unit and a second connecting hole (212) at the lower end of the auxiliary plate (100) of the N layer battery pack unit by using a connecting piece, wherein N is the total number of the battery pack units, and N is more than or equal to 2.
CN202211167096.1A 2022-09-23 2022-09-23 New energy automobile battery pack and manufacturing method thereof Active CN115411445B (en)

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