CN116487809B - Power battery assembly, power battery box assembly and electric vehicle - Google Patents

Power battery assembly, power battery box assembly and electric vehicle Download PDF

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Publication number
CN116487809B
CN116487809B CN202310744342.3A CN202310744342A CN116487809B CN 116487809 B CN116487809 B CN 116487809B CN 202310744342 A CN202310744342 A CN 202310744342A CN 116487809 B CN116487809 B CN 116487809B
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CN
China
Prior art keywords
assembly
battery
liquid cooling
power
box
Prior art date
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Active
Application number
CN202310744342.3A
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Chinese (zh)
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CN116487809A (en
Inventor
李立峰
张舜
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shanghai Enneagon Energy Technology Co ltd
Beijing Jiuxing Zhiyan Transportation Technology Co ltd
Original Assignee
Shanghai Enneagon Energy Technology Co ltd
Beijing Jiuxing Zhiyan Transportation Technology Co ltd
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Application filed by Shanghai Enneagon Energy Technology Co ltd, Beijing Jiuxing Zhiyan Transportation Technology Co ltd filed Critical Shanghai Enneagon Energy Technology Co ltd
Priority to CN202310744342.3A priority Critical patent/CN116487809B/en
Publication of CN116487809A publication Critical patent/CN116487809A/en
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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/258—Modular batteries; Casings provided with means for assembling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
    • B60L53/80—Exchanging energy storage elements, e.g. removable batteries
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
    • B60L58/24—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries
    • B60L58/26—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries by cooling
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/61—Types of temperature control
    • H01M10/613—Cooling or keeping cold
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
    • H01M10/625—Vehicles
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/655—Solid structures for heat exchange or heat conduction
    • H01M10/6556—Solid parts with flow channel passages or pipes for heat exchange
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
    • H01M10/6567—Liquids
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/244—Secondary casings; Racks; Suspension devices; Carrying devices; Holders characterised by their mounting method
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/249—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders specially adapted for aircraft or vehicles, e.g. cars or trains
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/296—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by terminals of battery packs
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/298—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the wiring of battery packs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2240/00—Control parameters of input or output; Target parameters
    • B60L2240/40—Drive Train control parameters
    • B60L2240/54—Drive Train control parameters related to batteries
    • B60L2240/545—Temperature
    • 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

Abstract

The invention relates to a power battery assembly, a power battery box assembly and a battery-replacing vehicle, wherein the power battery assembly comprises a battery shell and a liquid cooling assembly, a containing cavity is formed between the liquid cooling assembly and the battery shell, the liquid cooling assembly comprises a liquid cooling plate and at least two guide pipes, at least two liquid cooling cavities are arranged in the liquid cooling plate, and the guide pipes are used for communicating two adjacent liquid cooling cavities. The battery pack comprises at least one battery unit and a wiring assembly, wherein the battery unit is positioned in the accommodating cavity, the wiring assembly is arranged on the battery shell, the wiring assembly is electrically connected with the battery unit, and the battery unit is in heat conduction connection with the liquid cooling plate. The battery unit is installed between battery case and liquid cooling subassembly, and a plurality of liquid cooling chambeies can carry out unified control by temperature change to the battery unit, improve power battery assembly's energy density. The plurality of battery units are arranged in the same battery shell, so that wiring is simplified and difficulty is reduced. And each layer of supporting beam set is provided with a power battery assembly, and the power battery box assembly reduces the whole height and the gravity center to move downwards.

Description

Power battery assembly, power battery box assembly and electric vehicle
Technical Field
The invention relates to the field of automobiles, in particular to a power battery assembly, a power battery box assembly and a battery replacing vehicle.
Background
The vehicle is replaced by replacing the power battery box assembly so as to realize the continuous operation capability of the vehicle. The existing power battery box assembly is provided with a plurality of layers of box body frames, at least two groups of power battery packs are distributed on each layer of box body frame, and power battery assemblies between the upper layer and the lower layer are connected in series through wires.
Chinese patent CN219017832U discloses a frame battery unit, comprising a frame body, a battery pack and battery accessories, wherein the frame body is provided with a battery frame and a power distribution frame; the battery frame body is arranged at the upper part of the frame body and is provided with a layered supporting structure for installing the battery pack, and the battery pack is installed on the battery frame body; the power distribution frame body is arranged at the lower part of the frame body and forms a frame-shaped accommodating structure for installing the battery accessories, the battery accessories are installed in the power distribution frame body, and the periphery of the lower part of the power distribution frame body is provided with a pin joint beam for guiding and clamping.
The power batteries in the frame battery units are distributed scattered, each layer of frame body is provided with at least two power battery packs, each power battery pack needs to be independently connected and is provided with a pipeline, and the technical problems of low space utilization rate and low battery density exist. The frame battery unit also has the technical problems of complex wiring, large space required by upper and lower layers, high overall height and upward movement of the overall center of gravity, so improvement is needed.
Disclosure of Invention
The invention provides a power battery assembly, a power battery box assembly and a battery replacing vehicle, which are used for solving the technical problems of low space utilization rate, low battery density and high gravity center.
In a first aspect, the present invention provides a power cell assembly comprising:
a battery case;
the liquid cooling assembly is arranged on the battery shell, a containing cavity is formed between the liquid cooling assembly and the battery shell, the liquid cooling assembly comprises a liquid cooling plate and at least two guide pipes, at least two liquid cooling cavities are arranged in the liquid cooling plate, and the guide pipes are used for communicating the two adjacent liquid cooling cavities;
the battery pack comprises at least one battery unit and a wiring assembly, wherein the battery unit is positioned in the accommodating cavity, the wiring assembly is installed on the battery shell, the wiring assembly is electrically connected with the battery unit, and the battery unit is in heat conduction connection with the liquid cooling plate.
In some embodiments, two or more battery units are provided, and each battery unit is correspondingly attached to the surface of the liquid cooling cavity.
In some embodiments, the liquid cooling plate comprises a bottom plate part and assembling parts bent relative to two sides of the bottom plate part, a containing groove is formed between the bottom plate part and the assembling parts, at least part of the battery units are located in the containing groove, and the liquid cooling cavities are distributed at intervals along the length direction of the bottom plate part.
In some embodiments, the battery cell is embedded in the liquid cooling plate.
In a second aspect, the invention provides a power battery box assembly, which comprises a box frame, wherein the box frame comprises upright posts and at least two layers of support beam groups, each layer of support beam group comprises a cross beam and a plurality of longitudinal beams intersecting with the cross beam, and the power battery box assembly is characterized by further comprising the power battery assembly, and the power battery assembly is erected on the corresponding support beam group.
In some embodiments, the liquid cooling assembly is erected on the cross beam and protrudes towards the power battery assembly erected by the support beam set of the next layer.
In some embodiments, a concave supporting groove is formed between two adjacent liquid cooling cavities, the flow guide pipe bends to cross the supporting groove, and the supporting groove is buckled on the longitudinal beam.
In some embodiments, the distance between the lower surface of the liquid cooled component of the power cell assembly of the upper tier and the cell housing surface of the lower tier is less than or equal to 30mm.
In some embodiments, the wiring assemblies of each layer are located at the same end of the box frame.
In some embodiments, the liquid cooling assembly further comprises a heat exchange assembly mounted to the box frame, the liquid cooling plate comprises a water inlet pipe and a water outlet pipe which are distributed at intervals, and the heat exchange assembly is connected to the water inlet pipe and the water outlet pipe respectively.
In some embodiments, the heat exchange assembly is located at a bottom of the tank frame.
In a third aspect, the invention provides a vehicle comprising a vehicle body, a shoe frame and a power battery box assembly as described above, wherein the shoe frame is fixed to the vehicle body, and the power battery box assembly supplies power to the vehicle body through the shoe frame.
In order to solve the problems of low space utilization rate, low battery density and high gravity center, the invention has the following advantages: the battery unit is installed between battery case and liquid cooling subassembly, and a plurality of liquid cooling chambeies can carry out unified control by temperature change to the battery unit, improve power battery assembly's energy density. The plurality of battery units are arranged in the same battery shell, input and output electric energy is output through one wiring assembly, wiring is simplified, difficulty is reduced, and electric energy transmission effect is good.
And each layer of supporting beam set is provided with a power battery assembly, so that the layout mode is simplified, the overall height and the gravity center of the power battery box assembly are reduced, and the running stability is improved.
Drawings
FIG. 1 illustrates a schematic perspective view of a power cell assembly of some embodiments;
FIG. 2 illustrates a schematic longitudinal cross-sectional view of two adjacent liquid-cooled chambers in a straight line;
FIG. 3 illustrates a schematic longitudinal cross-sectional view of an elbow conducting two adjacent liquid cooling chambers of some embodiments;
FIG. 4 illustrates a schematic transverse cross-sectional view of a power cell assembly of some embodiments;
FIG. 5 illustrates an end view schematic of a power cell assembly of some embodiments;
FIG. 6 illustrates a schematic diagram of a power cell box assembly of some embodiments;
FIG. 7 illustrates a schematic transverse cross-sectional view of a power cell box assembly of some embodiments;
fig. 8 illustrates a schematic longitudinal cross-sectional view of a power cell box assembly of some embodiments.
In the figure, 10, a battery case; 20. a liquid cooling assembly; 21. a liquid cooling plate; 211. a bottom plate portion; 212. an assembling portion; 22. a liquid cooling cavity; 23. a flow guiding pipe; 24. a support groove; 25. a water inlet pipe; 26. a water outlet pipe; 27. a suspension connection portion; 30. a wiring assembly; 40. a battery unit; 50. a box frame; 51. a column; 511. side stand columns; 512. a middle upright post; 52. a support beam group; 521. a cross beam; 522. and (5) a longitudinal beam.
Detailed Description
The present disclosure will now be discussed with reference to several exemplary embodiments. It should be understood that these embodiments are discussed only to enable those of ordinary skill in the art to better understand and thus practice the teachings of the present invention, and are not meant to imply any limitation on the scope of the invention.
As used herein, the term "comprising" and variants thereof are to be interpreted as meaning "including but not limited to" open-ended terms. The term "based on" is to be interpreted as "based at least in part on". The terms "one embodiment" and "an embodiment" are to be interpreted as "at least one embodiment. The term "another embodiment" is to be interpreted as "at least one other embodiment".
As shown in fig. 1 to 5, the present invention proposes a power battery assembly that can be used in a power battery box assembly to supply electric energy to a vehicle using the power battery box assembly.
The power battery assembly comprises a battery shell 10, a liquid cooling assembly 20, at least one battery unit 40 and a wiring assembly 30, wherein the battery shell 10 is covered with the liquid cooling assembly 20, a containing cavity is formed between the liquid cooling assembly 20 and the battery shell 10, the at least one battery unit 40 is located in the containing cavity, the wiring assembly 30 is mounted on the battery shell 10, and the wiring assembly 30 is electrically connected with the battery unit 40. Alternatively, the battery cells 40 are provided in a long bar structure to increase the battery capacity by increasing the volume and energy density.
Preferably, the battery units 40 are provided with two or more than two battery units 40 distributed in the same accommodating cavity, and adjacent battery units 40 are electrically connected through copper bars to form a battery pack structure in series, so that the volume of each battery unit 40 can be reduced, the processing difficulty can be reduced, a compact arrangement structure can be formed by connecting the copper bars, and the battery density can be improved. And a plurality of battery cells 40 are positioned in the same battery case 10 to constitute an integral power battery assembly structure, and are connected through a single wiring assembly 30, simplifying external electrical connection modes.
The liquid cooling assembly 20 is located at the bottom of the battery unit 40 and is in heat conduction connection with the liquid cooling plate 21, and the liquid cooling assembly 20 is used for radiating heat of the battery unit 40 and keeping the battery unit 40 at a proper working temperature. The liquid cooling assembly 20 comprises a liquid cooling plate 21 and at least two liquid cooling cavities 22, wherein at least two liquid cooling cavities 22 are arranged in the liquid cooling plate 21, and the liquid cooling cavities 22 are communicated by the liquid cooling cavities 23. The liquid cooling cavities 22 are distributed at intervals along the length direction of the liquid cooling assembly 20, the capacity of cooling liquid in the liquid cooling cavities 22 is large, and the wall body of the liquid cooling cavities 22 is attached to the battery unit 40 so as to exchange heat. The liquid cooling assembly 20 is provided with a water inlet pipe 25 and a water outlet pipe 26, the water inlet pipe 25 guides the cooling liquid to enter the liquid cooling cavity 22, the cooling liquid sequentially flows through the inner area of the liquid cooling assembly 20 along the liquid cooling cavity 22 and the guide pipe 23, and the cooling liquid is guided to flow out of the liquid cooling cavity 22 through the water outlet pipe 26 so as to form circulation of the cooling liquid.
The liquid cooling cavities 22 are distributed at intervals to form heat dissipation areas which are distributed at intervals, so that the heat dissipation area is large, and the heat exchange effect is good. The number of the liquid cooling cavities 22 arranged in the liquid cooling assembly 20 corresponds to the number of the battery units 40, and each battery unit 40 is correspondingly attached to the surface of the liquid cooling cavity 22, so that the liquid cooling cavity 22 can correspondingly cool the battery units 40. Alternatively, a rigid support structure may be provided between adjacent two of the liquid cooling chambers 22 for mounting the power cell assembly to the housing frame 50.
The battery unit 40 is installed between the battery shell 10 and the liquid cooling assembly 20, the plurality of liquid cooling cavities 22 can regulate the temperature of the battery unit 40, the energy density of the power battery assembly is improved, and particularly the plurality of battery units 40 are arranged in the same battery shell 10 and output and input electric energy through one wiring assembly 30, so that the transmission effect is good.
The battery unit 40 may be mounted on the surface of the liquid cooling plate 21 so that the surfaces thereof are bonded to each other to form heat transfer. Alternatively, the surface of the liquid cooling plate 21 is partially recessed, and the battery unit 40 is embedded in the liquid cooling plate 21 to expand the heat dissipation contact area, and the relative combination position of the two can be defined.
As shown in fig. 6 to 8, the power cell assembly disclosed in the above embodiment is applied to a power cell box assembly, wherein the power cell box assembly includes a box frame 50 and a power cell assembly, and the box frame 50 is a frame structure formed by combining a plurality of sectional materials. The box frame 50 comprises a plurality of upright posts 51 vertically arranged and a plurality of layers of horizontally paved support beam groups 52, and the support beam groups 52 are distributed at intervals along the length direction of the upright posts 51. Every four upright posts 51 are rectangular in distribution to form a rectangular frame structure. The support beam group 52 includes a plurality of cross beams 521 and a plurality of longitudinal beams 522, the cross beams 521 are distributed at intervals along the length direction of the box frame 50, and two ends of the cross beams 521 are respectively connected with the upright posts 51 on two adjacent sides. The longitudinal beam 522 is perpendicular to the transverse beam 521, and two ends of the longitudinal beam 522 are respectively connected with the upright posts 51 on two opposite sides.
The power battery assembly is erected on the corresponding support beam set 52, alternatively, the liquid cooling assembly 20 is directly erected on the support beam set 52, and the liquid cooling cavity 22 corresponds to a rectangular space between the upper support beam set 52 and the lower support beam set 52. Preferably, the liquid cooling plates 21 between two adjacent liquid cooling chambers 22 are erected on the longitudinal beams 522 to form a supporting and lifting structure. A suspension connection part 27 is formed between two adjacent liquid cooling cavities 22, and the suspension connection part 27 has high structural strength. The flow guide pipe 23 spans or penetrates the suspension connection portion 27 to communicate the two adjacent liquid cooling chambers 22, and is erected on the longitudinal beam 522 through the suspension connection portion 27 to form an erection joint structure.
The liquid cooling module 20 is mounted to the housing frame 50 to form the assembly and positioning of the power cell module. Alternatively, the liquid cooling plate 21 is configured in a plate-like structure, and the liquid cooling plate 21 is laid flat on the box frame 50. In one embodiment, the liquid cooling module 20 is mounted on the cross beam 521 and protrudes toward the power cell module mounted on the next support beam set 52. Accordingly, the liquid-cooled plate 21 includes a bottom plate portion 211 and an assembling portion 212, the assembling portion 212 being bent with respect to both sides of the bottom plate portion 211, and an accommodating groove being formed between the bottom plate portion 211 and the assembling portion 212. At least a part of the battery cells 40 are located in the accommodating groove, and the liquid cooling chambers 22 are spaced apart in the longitudinal direction of the bottom plate portion 211.
The bottom plate portion 211 and the fitting portion 212 constitute a receiving groove to receive the battery cell 40 to expand the coupling area with the battery cell 40. The assembly portion 212 can mount the entire power battery assembly onto the case frame 50, so that the power battery assembly is conveniently fixed by embedding and mounting, and the bottom plate portion 211 is prevented from being directly laid on the case frame 50. Further, there is a height difference between the mounting portions of the bottom plate portion 211 and the fitting portion 212, which can guide the bottom plate portion 211 to be fitted into the support beam group 52, lowering the height of the case frame 50 for mounting the power battery assembly, thereby lowering the overall gravity center height of the power battery case assembly.
In one embodiment, a concave supporting groove 24 is formed between two adjacent liquid cooling chambers 22, the flow guiding pipe 23 is bent across the supporting groove 24, and the supporting groove 24 is buckled on the longitudinal beam 522. The support groove 24 is located the suspension connecting portion 27 to make suspension connecting portion 27 erect in longeron 522, longeron 522 embedding support groove 24, then the liquid cooling chamber 22 of upper strata extends to the surface of the power battery assembly of next floor, constitute power battery assembly embedding and install to box frame 50, bring structural connection location advantage, can also only lay the characteristics of a power battery assembly through a layer supporting beam group 52, can satisfy the battery capacity of original two at least battery packs, not only improved the convenience of installation, still greatly reduced the focus of power battery box assembly and improve battery density.
In an alternative embodiment, the support beam set 52 is provided with protruding support beams on both sides, and the power cell assembly is inserted from one end of the case frame 50 to the other end and slid to the mounted position until the fitting portion 212 is located above the support beams. The power cell assembly moves down to the fitting portion 212 to be erected on the support beam, thereby constituting a fitting structure of the power cell assembly.
In an alternative embodiment, the upright 51 includes a central upright 512 and side uprights 511, the side uprights 511 being a complete columnar structure that is distributed over four top corner positions of the box frame 50. The middle upright 512 is formed of a plurality of sections of short columns, one end of each short column being detachably or hingedly connected to one layer of the support beam set 52, and the other of the short columns being abutted against the other layer of the support beam set 52. When the stub is in the open state, the power cell assembly may be assembled to the case frame 50 from the opening direction of the stub. When the power battery assembly is assembled, the short columns support the upper and lower support beam groups 52 to form the upright posts 51, and the power battery assembly is convenient to assemble and disassemble.
In some embodiments, the distance between the lower surface of the liquid cooled assembly 20 of the upper layer of power cell assembly and the surface of the battery housing 10 of the lower layer is less than or equal to 30mm, e.g., the minimum spacing between two layers of power cell assemblies is set to 0mm, 5mm, 8mm, 10mm, 15mm, 20mm, 25mm, 30mm. The surface pitch distance between the power cell assemblies of the upper and lower layers is small, so that the overall height of the case frame 50 can be reduced accordingly; alternatively, the upper and lower layers of power cell assemblies may be spaced apart a small distance, and more power cell assemblies may be mounted on the same height of the case frame 50 to expand the overall power capacity.
Preferably, the wiring assemblies 30 of each layer are located at the same end of the box frame 50 to facilitate wiring, and the overall length of the required cable is small, saving cost. The wiring assembly 30 is mounted on the battery case 10 and above the liquid cooling assembly 20, and the wiring portion of the wiring assembly 30 faces one end of the box frame 50.
Preferably, the liquid cooling assembly 20 further comprises a heat exchange assembly mounted to the tank frame 50, the heat exchange assembly being connected to the water inlet pipe 25 and the water outlet pipe 26, respectively. The water inlet pipe 25 and the water outlet pipe 26 are positioned at one end of the liquid cooling plate 21, and preferably, the water inlet pipe 25 and the water outlet pipe 26 are positioned below the wiring assembly 30 so as to be positioned at the same end of the power battery assembly. The heat exchange assembly comprises a water cooling module, a radiator and a heat dissipation fan, wherein the radiator is connected with a water outlet pipe 26, the water cooling module drives cooling liquid to flow through the radiator, and a water inlet pipe 25 is connected with the water cooling module to form circulation of the cooling liquid. Optionally, the heat dissipation fan faces the direction of the heat sink, and the heat sink is provided with a curved conduit structure.
In an embodiment, the heat exchange assembly is located at the bottom of the box frame 50, the water cooling module, the radiator and the cooling fan are independently assembled to the box frame 50, and the cooling structure is constructed by adjusting the relative positions of the components, meanwhile, the distribution of the components is more flexible, and the box frame 50 can be matched and locked with a used vehicle.
The power battery box assembly disclosed by the embodiment is applied to a battery replacing vehicle, the battery replacing vehicle comprises a vehicle body, a collet frame and a power battery box assembly, the collet frame is fixed on the vehicle body, and the power battery box assembly supplies power for the vehicle body through the collet frame. The battery box frame is assembled to the collet frame through hoisting, so that the power battery box assembly is hoisted, dismantled or assembled, and the continuous running time of the vehicle is realized.
The foregoing description of implementations of the present disclosure has been presented for purposes of illustration and description. The foregoing description is not intended to be exhaustive or to limit the disclosure to the precise form disclosed, and modifications and variations are possible in light of the above teachings or may be acquired from practice of the disclosure. The embodiments were chosen and described in order to explain the principles of the present disclosure and its practical application to enable one skilled in the art to utilize the present disclosure in various embodiments and with various modifications as are suited to the particular use contemplated.

Claims (10)

1. A power cell assembly, comprising:
a battery case;
the liquid cooling assembly is arranged on the battery shell, a containing cavity is formed between the liquid cooling assembly and the battery shell, the liquid cooling assembly comprises a liquid cooling plate and at least two guide pipes, at least two liquid cooling cavities are arranged in the liquid cooling plate, and the guide pipes are used for communicating the two adjacent liquid cooling cavities;
at least one battery unit positioned in the accommodating cavity and a wiring assembly arranged on the battery shell, wherein the wiring assembly is electrically connected with the battery unit, the battery unit is in heat conduction connection with the liquid cooling plate,
the battery units are arranged in two or more, each battery unit is correspondingly attached to the surface of the liquid cooling cavity, the two or more battery units are distributed in the same accommodating cavity, the adjacent battery units are electrically connected in series through copper bars, and the wiring assembly is arranged in one and connected with one battery unit;
the liquid cooling plate comprises a bottom plate part and assembling parts which are bent relative to two sides of the bottom plate part, an accommodating groove is formed between the bottom plate part and the assembling parts, at least part of the battery units are located in the accommodating groove, the liquid cooling cavities are distributed at intervals along the length direction of the bottom plate part, and the assembling parts are used for erecting and supporting the power battery assembly.
2. The power cell assembly of claim 1 wherein the battery cell is embedded in the liquid cooled plate.
3. A power battery box assembly comprising a box frame, the box frame comprising an upright post and at least two layers of support beam groups, each layer of support beam groups comprising a cross beam and a plurality of stringers intersecting the cross beam, characterized in that the power battery box assembly further comprises a power battery assembly according to any of claims 1-2, the power battery assembly being erected on a corresponding support beam group.
4. A power cell box assembly according to claim 3 wherein the liquid cooling assembly is mounted to the cross beam and projects in a direction toward the power cell assembly mounted to the next support beam assembly.
5. The power battery box assembly of claim 4, wherein a concave supporting groove is formed between two adjacent liquid cooling cavities, the flow guide pipe is bent to cross the supporting groove, and the supporting groove is buckled on the longitudinal beam.
6. The power cell box assembly of claim 4 wherein a distance between a lower surface of a liquid cooled component of a previous layer of the power cell assembly and a surface of a battery housing of a next layer is less than or equal to 30mm.
7. A power cell box assembly according to claim 3 wherein the wiring members of each layer are located at the same end of the box frame.
8. The power cell box assembly of claim 3, wherein the liquid cooling assembly further comprises a heat exchange assembly mounted to the box frame, the liquid cooling plate comprises a water inlet pipe and a water outlet pipe which are distributed at intervals, and the heat exchange assembly is connected to the water inlet pipe and the water outlet pipe respectively.
9. The power cell box assembly of claim 8 wherein the heat exchange component is located at a bottom of the box frame.
10. A battery exchange vehicle comprising a vehicle body, a shoe frame secured to the vehicle body, and a power cell box assembly as claimed in any one of claims 3 to 9, the power cell box assembly powering the vehicle body through the shoe frame.
CN202310744342.3A 2023-06-25 2023-06-25 Power battery assembly, power battery box assembly and electric vehicle Active CN116487809B (en)

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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107221726A (en) * 2017-06-13 2017-09-29 浙江吉利汽车研究院有限公司 A kind of liquid cooling apparatus for electrokinetic cell bag
CN207069023U (en) * 2017-06-07 2018-03-02 天津市捷威动力工业有限公司 A kind of liquid cooling plate structure
CN207250678U (en) * 2017-06-07 2018-04-17 天津市捷威动力工业有限公司 Liquid cooling plate and its mounting structure
CN114614176A (en) * 2022-03-25 2022-06-10 中创新航科技股份有限公司 Energy storage rack
CN216958345U (en) * 2022-02-28 2022-07-12 湖南行必达网联科技有限公司 Battery system, chassis and working machine
CN115284860A (en) * 2021-11-30 2022-11-04 奥动新能源汽车科技有限公司 Bottom articulates formula battery package and electric automobile
CN115571222A (en) * 2022-09-30 2023-01-06 东风商用车有限公司 Electric truck's chassis and electric truck
CN219203269U (en) * 2022-12-13 2023-06-16 广州巨湾技研有限公司 Battery module shell and battery module

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4120435A1 (en) * 2021-07-16 2023-01-18 Volvo Car Corporation Structural battery for an electric vehicle comprising a battery cell support matrix

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN207069023U (en) * 2017-06-07 2018-03-02 天津市捷威动力工业有限公司 A kind of liquid cooling plate structure
CN207250678U (en) * 2017-06-07 2018-04-17 天津市捷威动力工业有限公司 Liquid cooling plate and its mounting structure
CN107221726A (en) * 2017-06-13 2017-09-29 浙江吉利汽车研究院有限公司 A kind of liquid cooling apparatus for electrokinetic cell bag
CN115284860A (en) * 2021-11-30 2022-11-04 奥动新能源汽车科技有限公司 Bottom articulates formula battery package and electric automobile
CN216958345U (en) * 2022-02-28 2022-07-12 湖南行必达网联科技有限公司 Battery system, chassis and working machine
CN114614176A (en) * 2022-03-25 2022-06-10 中创新航科技股份有限公司 Energy storage rack
CN115571222A (en) * 2022-09-30 2023-01-06 东风商用车有限公司 Electric truck's chassis and electric truck
CN219203269U (en) * 2022-12-13 2023-06-16 广州巨湾技研有限公司 Battery module shell and battery module

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