CN118539044B - Split type lithium battery pack module capable of being connected in series and parallel - Google Patents
Split type lithium battery pack module capable of being connected in series and parallel Download PDFInfo
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- CN118539044B CN118539044B CN202411001698.9A CN202411001698A CN118539044B CN 118539044 B CN118539044 B CN 118539044B CN 202411001698 A CN202411001698 A CN 202411001698A CN 118539044 B CN118539044 B CN 118539044B
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- heat dissipation
- pressing plate
- dissipation cavity
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- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 35
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 34
- 230000017525 heat dissipation Effects 0.000 claims abstract description 87
- 238000003825 pressing Methods 0.000 claims abstract description 52
- 239000000110 cooling liquid Substances 0.000 claims abstract description 11
- 230000006835 compression Effects 0.000 claims description 20
- 238000007906 compression Methods 0.000 claims description 20
- 238000001179 sorption measurement Methods 0.000 claims description 14
- 230000000712 assembly Effects 0.000 claims description 4
- 238000000429 assembly Methods 0.000 claims description 4
- 238000000576 coating method Methods 0.000 claims description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- 229910021389 graphene Inorganic materials 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 16
- 238000009434 installation Methods 0.000 abstract description 12
- 239000000428 dust Substances 0.000 description 18
- 230000000694 effects Effects 0.000 description 7
- 238000010521 absorption reaction Methods 0.000 description 6
- 238000001125 extrusion Methods 0.000 description 5
- 238000009825 accumulation Methods 0.000 description 3
- 230000003247 decreasing effect Effects 0.000 description 3
- 230000005389 magnetism Effects 0.000 description 3
- 230000032683 aging Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000005012 migration Effects 0.000 description 2
- 238000013508 migration Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- -1 graphite alkene Chemical class 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 150000002641 lithium Chemical class 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Classifications
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B5/00—Cleaning by methods involving the use of air flow or gas flow
- B08B5/02—Cleaning by the force of jets, e.g. blowing-out cavities
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/655—Solid structures for heat exchange or heat conduction
- H01M10/6554—Rods or plates
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/655—Solid structures for heat exchange or heat conduction
- H01M10/6556—Solid parts with flow channel passages or pipes for heat exchange
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
- H01M10/6567—Liquids
- H01M10/6568—Liquids characterised by flow circuits, e.g. loops, located externally to the cells or cell casings
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Secondary Cells (AREA)
Abstract
The invention discloses a split lithium battery pack module capable of being connected in series and parallel, which relates to the technical field of batteries and comprises a plurality of battery units, an installation seat, a clamping plate assembly and a buffer seat which are connected in series and parallel in combination, wherein the clamping plate assembly is arranged at the top of one side of the installation seat, the clamping plate assembly is positioned between two adjacent battery units, in the heat conduction process of a plurality of battery units through a heat conducting sheet and a heat conducting column, heat can be absorbed by cooling liquid in an elastic bag, accumulated heat in a heat dissipation cavity is absorbed by a heat conducting pressing plate and is conducted outwards for heat dissipation, the heat dissipation cavity enables air flow to carry hot air to be outwards dissipated when passing through the heat dissipation cavity, a heat dissipation condition is provided for the two battery units, the heat conducting pressing plate horizontally moves back and forth in the heat dissipation cavity under the control of the magnetic pole direction and the magnetic force, the heat conducting pressing plate repeatedly moves to outwards discharge the heat in the heat dissipation cavity, and the exchange frequency of air inside and outside the heat dissipation cavity is improved.
Description
Technical Field
The invention relates to the technical field of batteries, in particular to a split lithium battery pack module capable of being connected in series and parallel.
Background
At present, most of split lithium batteries are powered by adopting a plurality of independent lithium battery modules, so that the plurality of independent lithium battery modules are generally and compactly arranged in a battery mounting groove of the electric equipment to reduce space occupation, internal resistance increase and capacity reduction can occur in the lithium battery modules along with gradual aging of the lithium battery modules, more heat can be generated in work, and aging of the battery is accelerated at high temperature formed by the heat, so that vicious circle is formed.
In Chinese patent publication No.: CN106129526B discloses a battery pack and a power battery with the battery pack, the battery pack and the power battery with the battery pack comprise a plurality of battery cells connected together in series-parallel connection and a plurality of battery gaps formed between the battery cells, at least one of the battery gaps is inserted with a first heat conducting sheet, at least one outer surface of the battery pack is provided with a second heat conducting sheet connected with the first heat dissipation plate, the battery pack conducts heat energy of the battery pack to the outside mainly through the first heat conducting sheet and the second heat conducting sheet, but when the heat productivity of the battery is more, more heat still can be accumulated in the battery pack and is difficult to be led out, the temperature of the battery pack will be higher and higher, the service life is seriously affected, when the performance of one battery is obviously reduced, the temperature generated by the battery is accelerated to rise, the heat is conducted to other batteries by taking the battery as the center, the heat dissipation capability of the whole battery pack is poor, and the content of the battery pack is easy to generate thermal runaway and explosion causes fire disaster easily.
In addition, the second heat conducting fin can influence the outward circulation of heat in the battery pack in use, and is unfavorable for heat exchange between the heat in the battery pack and external air, so the heat dissipation efficiency is lower, and more dust can be gradually accumulated among a plurality of batteries in use of the battery pack, the accumulation of dust can further cause obstruction to the outward conduction of the heat in the battery pack, and the deposited dust is difficult to clean, so that the potential safety hazard problem in use of the battery pack is more and more serious.
Therefore, it is necessary to provide a split lithium battery module capable of being connected in series and parallel to solve the above problems.
Disclosure of Invention
The invention aims to disclose a split lithium battery pack module capable of being connected in series and parallel so as to solve the problems in the background technology.
In order to achieve the above purpose, the invention is realized by the following technical scheme: the split lithium battery pack module capable of being connected in series and parallel comprises a plurality of battery units, a mounting seat, a clamping plate assembly and a buffer seat which are connected in series and parallel in combination, wherein the clamping plate assembly is arranged at the top of one side of the mounting seat, and the clamping plate assembly is positioned between two adjacent battery units;
The clamping plate assembly comprises an inner clamping plate, a heat dissipation cavity is formed in the middle of the inner clamping plate, heat conducting fins are arranged on two sides of the inner clamping plate, a heat conduction column is arranged between the two heat conducting fins, a heat conduction pressing plate is connected to the inside of the heat dissipation cavity, a temperature sensor is arranged in the middle of the heat conduction pressing plate, and a through hole is formed in the heat conduction pressing plate;
Elastic bags are sleeved on the heat conducting columns at two sides of the heat conducting pressing plate, compression assemblies are arranged at four corners of the heat conducting pressing plate, the bottom of the inner clamping plate is connected with a limiting assembly, the limiting assembly comprises a movable groove, a limiting plate is movably connected inside the movable groove, the bottom of the limiting plate is connected with a connecting column, and the bottom end of the connecting column penetrates through the bottom of the inner clamping plate and is fixedly connected to the buffer seat;
the limiting plate is provided with a plurality of air holes which are communicated up and down, the upper surface of the limiting plate is provided with a guide plate corresponding to the air holes, lifting grooves are formed in two sides of the lower surface of the movable groove, and the bottom of the limiting plate is provided with a lifting plate;
The bottom symmetry of heat conduction clamp plate is equipped with first wedge, the upper surface of limiting plate and first wedge symmetry position are equipped with the stripper plate, stripper plate top inboard is equipped with and corresponds complex second wedge with first wedge, the top elastic connection of spliced pole has the shrink post.
Optionally, a mounting groove for mounting and fixing the battery unit is formed in the middle of the mounting seat.
Optionally, the buffer seat includes base and buffer, the base passes through buffer and mount pad fixed connection, the buffer is reset spring.
Optionally, compression subassembly includes magnetic force adsorption plate, spring and magnetism and inhale the piece, magnetic force adsorption plate fixed connection is in the heat conduction clamp plate outside, magnetism is inhaled piece fixed connection in the heat dissipation intracavity side, through spring fixed connection between magnetic force adsorption plate and the magnetism piece.
Optionally, the elastic groove has been seted up on the top of spliced pole, the bottom of elastic groove is equipped with compression spring, compression spring's top and the bottom fixed connection of shrink post.
Optionally, the heat dissipation cavity outwards extends at the both ends of heat conduction clamp plate, the both ends outside of heat conduction clamp plate is coated with the graphite alkene coating.
Optionally, two ends of the heat conducting column are respectively and fixedly connected with two corresponding heat conducting sheets on the two inner clamping plates.
Optionally, two temperature sensors are provided, and the two temperature sensors are respectively positioned at two sides of the middle part of the heat conducting pressing plate.
Optionally, the through holes on the heat conducting pressing plate are correspondingly matched with the heat conducting columns, and the heat conducting columns penetrate through the through holes.
Optionally, the elastic bag is hollow structure, the inside of elastic bag is irritated with the coolant liquid, the movable groove is offered in the bottom of heat dissipation chamber, the discharge opening that outwards link up has been offered to the bottom both sides of movable groove, the both sides of limiting plate are laminated with the both sides of movable groove, the lifter plate corresponds the cooperation with the lift groove, the both sides of lifter plate are laminated with the both sides of movable groove, the inboard top of movable groove is equipped with the flange.
The invention has the technical effects and advantages that:
1. In the invention, in the heat conduction process of the plurality of battery units through the heat conducting sheets and the heat conducting columns, heat can be absorbed by the cooling liquid in the elastic bag, and accumulated heat in the heat dissipation cavity is absorbed by the heat conducting pressing plate and is conducted outwards for heat dissipation, and the heat dissipation cavity enables air flow to carry hot air to be outwards dissipated when passing through the heat dissipation cavity, so that a heat dissipation condition is provided for the two battery units.
2. According to the invention, the heat conducting pressing plate horizontally moves back and forth in the heat dissipation cavity under the control of the magnetic pole direction and the magnetic force of the magnetic attraction block, the heat conducting pressing plate repeatedly moves to discharge heat in the heat dissipation cavity outwards, the exchange frequency of gas inside and outside the heat dissipation cavity is improved, the heat conducting pressing plate horizontally moves in the heat dissipation cavity at a high speed by improving the magnetic force between the magnetic attraction block and the magnetic force adsorption plate in the process of switching the magnetic pole direction of the magnetic attraction block, and dust in the heat dissipation cavity is discharged from the heat dissipation cavity along with the gas in a mode of accelerating the circulation speed of the heat conducting pressing plate and the gas in the heat dissipation cavity, so that excessive accumulation of dust in the heat dissipation cavity is avoided.
3. In the process that the magnetic absorption block repeatedly drives the magnetic absorption plate to slide horizontally and greatly, the heat conduction pressing plate repeatedly extrudes the elastic bag between the heat conduction pressing plate and the heat dissipation cavity, and the contact surface of the cooling liquid with the inner wall of the heat dissipation cavity is increased along with the extruded elastic bag, so that the cooling liquid can absorb heat generated by the battery unit in a larger range, and the heat absorption effect in the heat dissipation cavity is enhanced.
Drawings
FIG. 1 is a schematic diagram of the overall three-dimensional structure of a lithium battery module according to the present invention;
fig. 2 is a schematic view of a battery cell mounting structure of the present invention;
FIG. 3 is a schematic view of the connection structure of the clamping plate assembly and the battery unit according to the present invention;
FIG. 4 is a schematic view showing the internal structure of the inner clamping plate according to the present invention;
FIG. 5 is a schematic view of a connection structure of a heat conductive sheet according to the present invention;
FIG. 6 is a schematic view of a compression assembly of the present invention;
FIG. 7 is an enlarged schematic view of the structure of the area A in FIG. 6 according to the present invention;
FIG. 8 is a schematic view of a connection structure of the squeeze plate of the present invention;
fig. 9 is an enlarged schematic view of the structure of the region B in fig. 8 according to the present invention.
In the figure: 1. a battery unit; 2. a mounting base; 3. a cleat assembly; 301. an inner clamping plate; 302. a heat dissipation cavity; 303. a heat conductive sheet; 304. a heat conducting column; 305. a thermally conductive platen; 3051. a first wedge surface; 306. an elastic bag; 307. a compression assembly; 3071. a magnetic force adsorption plate; 3072. a spring; 3073. a magnetic suction block; 308. a limit component; 3081. a movable groove; 3082. a connecting column; 3083. a limiting plate; 30831. an extrusion plate; 30832. a second wedge surface; 3084. air holes; 3085. a deflector; 3086. a discharge port; 3087. a lifting groove; 3088. a lifting plate; 3089. a convex plate; 3090. a shrink column; 4. a buffer seat; 401. a base; 402. and a buffer member.
Detailed Description
In order that the above-recited objects, features and advantages of the present application will be more readily understood, a more particular description of the application will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings. It should be noted that, without conflict, the embodiments of the present application and features in the embodiments may be combined with each other.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced otherwise than as described, and therefore the scope of the present invention is not limited to the specific embodiments disclosed below.
Referring to fig. 1-9, the application discloses a split lithium battery module capable of being connected in series and parallel, which comprises a plurality of battery units 1, an installation seat 2, a clamping plate assembly 3 and a buffer seat 4 which are connected in series and parallel in a combined manner, wherein the clamping plate assembly 3 is arranged at the top of one side of the installation seat 2, an installation groove for installing and fixing the battery units 1 is formed in the middle of the installation seat 2, the installation groove of the installation seat 2 is used for positioning and installing and disassembling the battery units 1, the clamping plate assembly 3 is used as an energy absorption assembly between the two battery units 1, heat transfer can be carried out between the lithium battery modules formed by the battery units 1, the temperature distribution inside the lithium battery modules is more uniform, the situation that certain battery units 1 are overheated singly is avoided, the whole performance and the safety of the lithium battery module are improved, and the buffer seat 4 is used for buffering and supporting the lithium battery modules.
Wherein, a battery unit 1 corresponds a mount pad 2 and a buffer seat 4, all be equipped with fixed knot between two adjacent mount pads 2 and two adjacent buffer seats 4 and construct, make a plurality of mount pads 2 and buffer seat 4 splice fixedly with the battery unit 1 of adaptation more quantity through fixed knot, after the corresponding mount pad 2 of battery unit 1 installs fixedly, a plurality of battery unit 1 and a plurality of mount pad 2 form overall structure, thereby improve whole mechanical strength, and then when this lithium cell group module receives vibrations, a plurality of battery unit 1 bear vibration and impact force as a whole simultaneously, avoid the hard friction collision of battery unit 1 each other to cause damaging weeping phenomenon, the top of a plurality of battery unit 1 is equipped with the pencil group, make a plurality of battery unit 1 establish ties electric connection through the pencil group, according to the use needs, make a plurality of battery unit 1 parallelly connected electric connection through the cooperation of pencil group and parallelly connected module, if a certain battery unit 1 needs to be changed, demolish this battery unit 1 from corresponding mount pad 2, simultaneously disconnect the battery unit 1, then the battery unit 1 that changes is installed in this new mount pad 2 and the new pencil group is installed in this mount pad 1.
The buffer seat 4 comprises a base 401 and a buffer piece 402, the base 401 is fixedly connected with the mounting seat 2 through the buffer piece 402, the buffer piece 402 is a return spring, and the buffer piece 402 resists the vibration force generated in the running process of the two-wheel or three-wheel electric vehicle.
The clamping plate assembly 3 comprises an inner clamping plate 301, the inner clamping plate 301 is fixedly connected with a mounting seat 2, a heat dissipation cavity 302 is formed in the middle of the inner clamping plate 301, heat conducting fins 303 are arranged on two sides of the inner clamping plate 301, heat conducting columns 304 are arranged between the two heat conducting fins 303, two ends of each heat conducting column 304 are respectively fixedly connected with the inner sides of the corresponding two heat conducting fins 303 on the two inner clamping plates 301, a heat conducting pressing plate 305 is connected to the inner side of the heat dissipation cavity 302, two ends of each heat conducting pressing plate 305 extend outwards to form a heat dissipation cavity 302, graphene coatings are coated on the outer sides of two ends of each heat conducting pressing plate 305, the graphene coatings improve heat dissipation efficiency of the heat conducting pressing plates 305 outwards, through holes are formed in the heat conducting pressing plates 305, the through holes in the heat conducting pressing plates 305 are correspondingly matched with the heat conducting columns 304, the heat conducting columns 304 penetrate through the heat conducting columns 303 and the heat conducting columns 304 absorb heat generated by the battery units 1, the adjacent two battery units 1 are thermally conducted into the heat dissipation cavities 302 through the heat conducting columns 304, and the heat dissipation cavities 302 provide heat exchange conditions for outwards dissipation of the heat between the two battery units 1.
The heat conduction post 304 is provided with elastic bags 306 in a sleeved mode on two sides of the heat conduction pressing plate 305, the elastic bags 306 are of hollow structures, the elastic bags 306 are made of heat conduction materials, cooling liquid is filled in the elastic bags 306, the bottom of the inner clamping plate 301 is connected with a limiting component 308, the limiting component 308 comprises a movable groove 3081, the movable groove 3081 is arranged at the bottom of the heat dissipation cavity 302, the inside of the movable groove 3081 is movably connected with a limiting plate 3083, two ends of the upper surface of the limiting plate 3083 are of an inclined surface structure from inside to outside, two sides of the bottom of the movable groove 3081 are provided with discharge openings 3086 which are penetrated outwards, the top of the inner side of the movable groove 3081 is provided with a convex plate 3089, when the mounting seat 2 and the base 401 move up and down through the buffer piece 402, the convex plate 3089 is enabled to be in contact with the limiting plate 3083 to collide, dust on the limiting plate 3083 can conveniently move outwards along the inclined surface of the limiting plate 3083 along with the inclined surface of the discharge openings 3086, the bottom of the limiting plate 3083 is connected with a connecting post 3082, and the bottom of the connecting post 3082 penetrates through the bottom of the inner clamping plate 301 and is fixedly connected to the buffer seat 4.
The upper surface of limiting plate 3083 is equipped with the guide plate 3085 corresponding with gas pocket 3084, a plurality of gas pockets 3084 that link up from top to bottom are seted up on the limiting plate 3083, lifting groove 3087 has been seted up to the lower surface both sides of movable groove 3081, the bottom of limiting plate 3083 is equipped with lifting plate 3088, lifting plate 3088 corresponds the cooperation with lifting groove 3087, the both sides of limiting plate 3083 are laminated with the both sides of movable groove 3081, lifting plate 3088's both sides are laminated with the both sides of movable groove 3081, two lifting plates 3088 are located the one side that is close to two discharge openings 3086 respectively, form the closed chamber between movable groove 3081, limiting plate 3083 and two lifting plates 3088, this closed chamber passes through gas pocket 3084 and advances the gas.
In use, before the lithium battery pack module is installed, the plurality of battery units 1 are respectively installed in the installation grooves of the plurality of installation seats 2, the plurality of installation seats 2 and the plurality of buffer seats 4 are sequentially connected and fixed to form the lithium battery pack module, the buffer seats 4 are fixedly installed in the lithium battery installation grooves of the two-wheel or three-wheel electric vehicle, at the moment, one side, close to each other, of each two adjacent battery units 1 is attached to two sides of the inner clamping plate 301, when heat is generated in the running process of the electric vehicle, the heat is mutually transferred through the two heat conducting sheets 303 and the heat conducting columns 304, particularly, the heat is conducted from a high temperature area to a low temperature area, and the uniform distribution of the heat in the lithium battery pack module is facilitated.
Because the heat dissipation of the two battery units 1 close to each other is blocked, in order to avoid the risk of thermal runaway caused by overheat temperature rise between the two battery units 1, in the heat conduction process of the plurality of battery units 1 through the heat conducting fin 303 and the heat conducting column 304, heat can be absorbed by the cooling liquid in the elastic bag 306, the accumulated heat staying in the heat dissipation cavity 302 is absorbed by the heat conducting pressing plate 305 and is conducted to the outside of the inner clamping plate 301 through the two ends of the heat conducting pressing plate 305, on the other hand, the heat dissipation cavity 302 enables air flow to carry hot air to be dissipated outwards when passing through the heat dissipation cavity 302, so that the two battery units 1 can be effectively ventilated, and the overhigh heat between the two battery units 1 is avoided.
When the lithium battery pack module is vibrated, the plurality of battery units 1 and the mounting seat 2 are matched with the buffer piece 402 as a whole to resist vibration power, buffer protection is formed for the battery units 1, when the distance between the mounting seat 2 and the base 401 is shortened, the mounting seat 2 and the inner clamping plate 301 move downwards, the distance between the limiting plate 3083 and the lower surface of the movable groove 3081 is increased, gas enters the closed cavity through the air holes 3084, then the distance between the limiting plate 3083 and the lower surface of the movable groove 3081 is reduced under the rebound force of the buffer piece 402, at the moment, the gas in the closed cavity is sprayed upwards through the air holes 3084, the distance between the mounting seat 2 and the buffer piece 402 is repeatedly reduced and increased under the elastic force of the buffer piece 402, the distance between the limiting plate 3083 and the lower surface of the movable groove 3081 is repeatedly increased and decreased, specifically, when the distance between the mounting seat 2 and the buffer member 402 is decreased, the distance between the limiting plate 3083 and the lower surface of the movable groove 3081 is increased, and when the distance between the mounting seat 2 and the buffer member 402 is increased, the distance between the limiting plate 3083 and the lower surface of the movable groove 3081 is decreased, the deflector 3085 guides the gas sprayed upwards through the air hole 3084, so that the sprayed gas faces the inner wall of the heat dissipation cavity 302, and in the process that the lithium battery module is continuously vibrated, the gas in the closed cavity is repeatedly blown to the inner wall of the heat dissipation cavity 302 in a pulse mode, dust in the heat dissipation cavity 302 is blown away, and the dust is prevented from accumulating in the heat dissipation area to affect the heat dissipation efficiency.
In the ventilation process of the battery unit 1 through the heat dissipation cavity 302, dust in the external air can enter the heat dissipation cavity 302 and gather on the elastic bag 306, the dust is accumulated more and more to influence the heat dissipation in the elastic bag 306 and the heat dissipation cavity 302, and in this way, when the electric vehicle runs and shakes, the distance between the mounting seat 2 and the base 401 is shortened, the impact generated when the limiting plate 3083 contacts with the convex plate 3089 can enable the shaking force to be transmitted to the inner clamping plate 301, and then the inner clamping plate 301 is transmitted to the heat conducting column 304 and the elastic bag 306, so that the dust gathered on the elastic bag 306 shakes down.
Referring to fig. 1-9, in actual use, the contact condition between the hot air in the middle area of the heat dissipation cavity 302 and the external air is poor, so that the heat in the middle is difficult to be dissipated outwards, and the up-and-down movement of the limiting plate 3083 needs to be driven by vibration in the running process of the electric vehicle, the magnitude of the vibration amplitude directly affects the upward ejected air flow through the air hole 3084, so that the cleaning effect of dust in the heat dissipation cavity 302 cannot be effectively ensured, and the problem is solved:
The four corners of the heat conducting pressing plate 305 are provided with compression assemblies 307, the compression assemblies 307 comprise magnetic force adsorption plates 3071, springs 3072 and magnetic attraction blocks 3073, the magnetic force adsorption plates 3071 are fixedly connected to the outer sides of the heat conducting pressing plate 305, the magnetic attraction blocks 3073 are fixedly connected to the inner sides of the heat dissipation cavities 302, the magnetic force adsorption plates 3071 and the magnetic attraction blocks 3073 are fixedly connected through the springs 3072, the magnetic attraction or magnetic repulsion states of the magnetic force adsorption plates 3071 are switched, the heat conducting pressing plate 305 is driven to horizontally move, the moving amplitude of the heat conducting pressing plate 305 in the heat dissipation cavities 302 is improved through the control of the magnetic attraction or magnetic repulsion strength of the magnetic force adsorption plates 3071, heat on two sides of the heat conducting pressing plate 305 is extruded through the swinging of the heat conducting pressing plate 305, the heat is extruded outwards from the inner sides of the heat dissipation cavities 302, and the cooling efficiency of the air inside the heat dissipation cavities 302 is improved through the exchange frequency of the air inside the heat dissipation cavities 302 is quickened.
The middle part of heat conduction clamp plate 305 is equipped with temperature sensor, and temperature sensor is equipped with two, and two temperature sensor are located the middle part both sides of heat conduction clamp plate 305 respectively, detect the current temperature value of heat conduction clamp plate 305 both sides in real time through temperature sensor to in time dispel the heat in the heat dissipation chamber 302 according to the temperature that temperature sensor detected.
The bottom symmetry of heat conduction clamp plate 305 is equipped with first wedge 3051, the upper surface of limiting plate 3083 and the symmetrical position of first wedge 3051 are equipped with stripper plate 30831, stripper plate 30831 top inboard is equipped with the second wedge 30832 that corresponds complex with first wedge 3051, the top elastic connection of spliced pole 3082 has shrink post 3090, through the cooperation of first wedge 3051 and second wedge 30832, in the compression subassembly 307 drive heat conduction clamp plate 305 horizontal migration process, after first wedge 3051 and second wedge 30832 contact, follow compression subassembly 307 and continue to drive heat conduction clamp plate 305 and remove, will drive limiting plate 3083 synchronous downmovement when stripper plate 30831 slides downwards, compression subassembly 307 repeatedly drives heat conduction clamp plate 305 horizontal migration, will drive limiting plate 3083 and go up and down, wherein, the elastic slot has been seted up on the top of spliced pole 3082, the bottom of elastic slot is equipped with compression spring, the top of compression spring and the bottom fixed connection of shrink post 3090, when limiting plate 3083 moves down, compression spring is pressed to compression spring.
In use, in order to improve the heat exchange effect between the hot air in the heat dissipation cavity 302 and the external air, a threshold value a and a threshold value B are set on the temperature sensor in advance, the temperature of the threshold value a is lower than the threshold value B, when the temperature sensor detects that the temperature in the heat dissipation cavity 302 reaches the threshold value a, the magnetic attraction block 3073 is started, the heat conduction pressing plate 305 moves horizontally back and forth in the heat dissipation cavity 302 under the control of the magnetic pole direction and the magnetic force of the magnetic attraction block 3073, specifically, when the magnetic attraction block 3073 attracts the magnetic attraction plate 3071 in the direction of the magnetic attraction block 3073, the magnetic attraction plate 3071 drives the heat conduction pressing plate 305 to move horizontally in the direction of the magnetic attraction block 3073, and meanwhile, the hot air close to one side of the magnetic attraction block 3073 is extruded to be outwards dispersed, otherwise, when the magnetic attraction block 3073 repels the magnetic attraction plate 3071 in the opposite direction, the magnetic attraction plate 3071 is driven to move horizontally in the direction away from the magnetic attraction block 3073, the hot air extruded at one side far away from the magnetic attraction block 3073 is outwards discharged, the heat in the heat dissipation cavity 302 is repeatedly discharged outwards in the mode, the exchange frequency of the air inside and outside the heat dissipation cavity 302 is improved, the heat in the heat dissipation cavity 302 is quickly reduced, in the process, because dust in the external air can be widely distributed on the inner surface of the heat dissipation cavity 302, the air in the closed cavity is upwards extruded and sprayed only by virtue of the limiting plate 3083 to realize the overall cleaning of the dust in the heat dissipation cavity 302, in the process of switching the magnetic attraction block 3073 through the magnetic pole direction, the heat conduction pressing plate 305 is horizontally moved in the heat dissipation cavity 302 at a high speed by improving the magnetic force between the magnetic attraction block 3073 and the magnetic force adsorption plate 3071, the air is led in and out from the heat dissipation cavity 302 at a high speed by accelerating the circulation speed of the heat conduction pressing plate 305 and the air in the heat dissipation cavity 302, the dust in the heat dissipation cavity 302 is carried by the air moving at the high speed and is outwards blown out, excessive dust accumulation in the heat dissipation chamber 302 is avoided.
When the temperature sensor detects that the temperature in the heat dissipation cavity 302 reaches the threshold B, the magnetic attraction block 3073 further increases the horizontal movement amplitude and frequency of the magnetic attraction plate 3071, at this time, after the first wedge-shaped surface 3051 contacts with the second wedge-shaped surface 30832, the shrinkage post 3090 moves the compression spring downwards and the limiting plate 3083 moves downwards along with the further outward movement of the heat conduction pressing plate 305, so that the top end of the second wedge-shaped surface 30832 gradually slides towards the bottom end of the first wedge-shaped surface 3051, and in the process that the magnetic attraction block 3073 repeatedly drives the magnetic attraction plate 3071 to slide horizontally and greatly, the heat conduction pressing plate 305 repeatedly presses the elastic bag 306 between the heat conduction pressing plate 305 and the heat dissipation cavity 302, The contact surface of the cooling liquid with the inner wall of the heat dissipation cavity 302 is increased along with the extrusion deformation of the elastic bag 306, so that the cooling liquid can absorb the heat generated by the battery unit 1 in a larger range, the heat absorption effect in the heat dissipation cavity 302 is enhanced, in the extrusion deformation process of the elastic bag 306, the dust on the inner wall of the heat dissipation cavity 302 is displaced by the extrusion force of the elastic bag 306, the dust on the inner wall of the heat dissipation cavity 302 can be cleaned by the elastic bag 306, in the process, the limiting plate 3083 is also moved downwards, the magnetic attraction block 3073 is used as a driving source, the limiting plate 3083 is controlled to move downwards in an active mode to extrude the gas in the movable groove 3081 outwards, And further, the heat conduction pressure plate 305 swings to lead out and emit heat to the outside in the heat dissipation cavity 302, and simultaneously, the limiting plate 3083 is enabled to move up and down stably and greatly, the gas at the inner side of the limiting plate 3083 is repeatedly extruded, the temperature gradients of different areas are disturbed by the pulse effect with repeated high intensity, the gas in the heat dissipation cavity 302 is enabled to be more uniformly mixed, the hot spots in different areas of the heat dissipation cavity 302 are avoided to be concentrated, meanwhile, when the temperature of the cooling liquid in the elastic bag 306 is higher, the circulation speed of the gas near the elastic bag 306 can be accelerated through the gas sprayed upwards from the inside of the closed cavity, the cooling efficiency of the elastic bag 306 and the cooling liquid in the inside is improved, so that the heat absorption effect of the elastic bag 306 is ensured, specifically, when the magnetic attraction block 3073 drives the heat conducting pressing plate 305 to move towards the direction close to the magnetic attraction block 3073 through the magnetic attraction plate 3071, after the first wedge surface 3051 contacts with the second wedge surface 30832, the limiting plate 3083 is driven to move downwards along with the extrusion plate 30831, the elastic bag 306 far away from the magnetic attraction block 3073 is rebounded and contracted, the air in the closed cavity is discharged from the air hole 3084 far away from the magnetic attraction block 3073 to cool the elastic bag 306 far away from the magnetic attraction block 3073, when the magnetic attraction block 3073 drives the heat conducting pressing plate 305 to move towards the direction far away from the magnetic attraction block 3073 through the magnetic attraction plate 3071, The first wedge surface 3051 on the other side of the limiting plate 3083 contacts with the second wedge surface 30832 and drives the limiting plate 3083 to move downwards along with the extruding plate 30831, at this time, the elastic bag 306 close to the magnetic block 3073 is rebounded and contracted, and the air in the closed cavity is discharged through the air hole 3084 close to one side of the magnetic block 3073 to cool the elastic bag 306 close to the magnetic block 3073.
The foregoing description is only illustrative of the present invention and is not intended to limit the scope of the invention, and all equivalent changes made by the specification and drawings of the present invention, or direct or indirect application in the relevant art, are included in the scope of the present invention.
Claims (10)
1. The utility model provides a but split type lithium battery group module of series-parallel connection, includes a plurality of battery unit (1), mount pad (2), splint subassembly (3) and buffer seat (4) through series-parallel connection combination connection, its characterized in that: the clamping plate assembly (3) is arranged at the top of one side of the mounting seat (2), and the clamping plate assembly (3) is positioned between two adjacent battery units (1);
The clamping plate assembly (3) comprises an inner clamping plate (301), a heat dissipation cavity (302) is formed in the middle of the inner clamping plate (301), heat conducting fins (303) are arranged on two sides of the inner clamping plate (301), a heat conducting column (304) is arranged between the two heat conducting fins (303), two ends of the heat conducting column (304) are fixedly connected with the two corresponding heat conducting fins (303) on the two inner clamping plates (301) respectively, and two adjacent battery units (1) conduct heat through the heat conducting column (304) and the heat conducting fins (303);
The heat dissipation cavity (302) is internally connected with a heat conduction pressing plate (305), a perforation is formed in the heat conduction pressing plate (305), the perforation is correspondingly matched with a heat conduction column (304) on the heat conduction pressing plate (305), the heat conduction column (304) penetrates through the perforation, and two ends of the heat conduction pressing plate (305) outwards extend out of the heat dissipation cavity (302).
2. The split lithium battery module of claim 1, wherein: the mounting seats (2) correspond to the bottoms of the single battery units (1), one battery unit (1) corresponds to one mounting seat (2) and one buffer seat (4), and a mounting groove for mounting and fixing the battery unit (1) is formed in the middle of each mounting seat (2);
The buffer seat (4) is connected to the lower part of the mounting seat (2).
3. The split lithium battery module of claim 1, wherein: the buffer seat (4) comprises a base (401) and a buffer piece (402), the base (401) is fixedly connected with the mounting seat (2) through the buffer piece (402), and the buffer piece (402) is a reset spring;
Graphene coatings are coated on the outer sides of two ends of the heat-conducting pressing plate (305).
4. The split lithium battery module of claim 1, wherein: elastic bags (306) are sleeved on the heat conduction columns (304) and positioned on two sides of the heat conduction pressing plate (305), cooling liquid is filled in the elastic bags (306), a temperature sensor is arranged in the middle of the heat conduction pressing plate (305), and compression assemblies (307) are arranged at four corners of the heat conduction pressing plate (305);
The compression assembly (307) comprises a magnetic adsorption plate (3071), a spring (3072) and a magnetic attraction block (3073), wherein the magnetic adsorption plate (3071) is fixedly connected to the outer side of the heat conducting pressing plate (305), the magnetic attraction block (3073) is fixedly connected to the inner side of the heat dissipation cavity (302), and the magnetic adsorption plate (3071) and the magnetic attraction block (3073) are fixedly connected through the spring (3072);
The two temperature sensors are respectively positioned at two sides of the middle part of the heat conducting pressing plate (305).
5. The split lithium battery module of claim 3, wherein: the bottom of interior splint (301) is connected with spacing subassembly (308), spacing subassembly (308) are including movable groove (3081), the inside swing joint of movable groove (3081) has limiting plate (3083), the bottom of limiting plate (3083) is connected with spliced pole (3082), the bottom of spliced pole (3082) runs through the bottom of interior splint (301) and fixed connection is on buffer seat (4).
6. The split lithium battery module of claim 5, wherein: the limiting plate (3083) is provided with a plurality of air holes (3084) which are vertically communicated, the upper surface of the limiting plate (3083) is provided with a guide plate (3085) corresponding to the air holes (3084), the two sides of the lower surface of the movable groove (3081) are provided with lifting grooves (3087), and the bottom of the limiting plate (3083) is provided with lifting plates (3088).
7. The split lithium battery module of claim 6, wherein: two sides of the limiting plate (3083) are attached to two sides of the movable groove (3081);
the lifting plate (3088) is correspondingly matched with the lifting groove (3087);
Two sides of the lifting plate (3088) are attached to two sides of the movable groove (3081).
8. The split lithium battery module of claim 5, wherein: the bottom of the heat conduction pressing plate (305) is symmetrically provided with a first wedge-shaped surface (3051), the upper surface of the limiting plate (3083) and the symmetrical position of the first wedge-shaped surface (3051) are provided with a squeezing plate (30831), the inner side of the top end of the squeezing plate (30831) is provided with a second wedge-shaped surface (30832) which is correspondingly matched with the first wedge-shaped surface (3051), and the top of the connecting column (3082) is elastically connected with a shrinkage column (3090);
An elastic groove is formed in the top end of the connecting column (3082), a compression spring is arranged at the bottom of the elastic groove, and the top of the compression spring is fixedly connected with the bottom of the contracting column (3090).
9. The split lithium battery module of claim 8, wherein: the top of the inner side of the movable groove (3081) is provided with a convex plate (3089), and two ends of the convex plate (3089) are correspondingly matched with two ends of the limiting plate (3083) respectively.
10. The split lithium battery module of claim 5, wherein: discharge openings (3086) which are communicated outwards are formed in two sides of the bottom of the movable groove (3081).
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| CN202411001698.9A CN118539044B (en) | 2024-07-25 | 2024-07-25 | Split type lithium battery pack module capable of being connected in series and parallel |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110277515A (en) * | 2018-03-16 | 2019-09-24 | 郑州深澜动力科技有限公司 | A kind of battery modules and its temperature control frame |
| CN116207453A (en) * | 2023-05-05 | 2023-06-02 | 深圳市华杰动力科技有限公司 | Battery pack |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP5595871B2 (en) * | 2010-10-28 | 2014-09-24 | 三洋電機株式会社 | Power supply |
| JP6894933B2 (en) * | 2019-02-07 | 2021-06-30 | 信越ポリマー株式会社 | Heat dissipation structure and battery with it |
| US20210384568A1 (en) * | 2020-06-03 | 2021-12-09 | Amita Technologies Inc. | Battery-cell heat transfer structure and battery module thereof |
| CN113381094A (en) * | 2021-07-14 | 2021-09-10 | 珠海冠宇动力电池有限公司 | Battery pack |
| EP4451443A1 (en) * | 2022-02-21 | 2024-10-23 | Contemporary Amperex Technology (Hong Kong) Limited | Battery and electric device |
| CN219959252U (en) * | 2023-04-28 | 2023-11-03 | 欣旺达动力科技股份有限公司 | Battery pack |
| CN117219587A (en) * | 2023-08-28 | 2023-12-12 | 宁波振翮科技有限公司 | Heat radiation structure and diode module |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110277515A (en) * | 2018-03-16 | 2019-09-24 | 郑州深澜动力科技有限公司 | A kind of battery modules and its temperature control frame |
| CN116207453A (en) * | 2023-05-05 | 2023-06-02 | 深圳市华杰动力科技有限公司 | Battery pack |
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