CN114976382A - Immersion type liquid cooling cylindrical battery pack module and electric automobile adopting same - Google Patents
Immersion type liquid cooling cylindrical battery pack module and electric automobile adopting same Download PDFInfo
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- CN114976382A CN114976382A CN202210655799.2A CN202210655799A CN114976382A CN 114976382 A CN114976382 A CN 114976382A CN 202210655799 A CN202210655799 A CN 202210655799A CN 114976382 A CN114976382 A CN 114976382A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
- H01M10/6567—Liquids
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- 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
- B60L50/00—Electric propulsion with power supplied within the vehicle
- B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
- B60L50/60—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
- B60L50/64—Constructional details of batteries specially adapted for electric vehicles
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- 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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
- H01M10/613—Cooling or keeping cold
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
- H01M10/617—Types of temperature control for achieving uniformity or desired distribution of temperature
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
- H01M10/625—Vehicles
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/64—Heating or cooling; Temperature control characterised by the shape of the cells
- H01M10/643—Cylindrical cells
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/655—Solid structures for heat exchange or heat conduction
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
- H01M10/6567—Liquids
- H01M10/6568—Liquids characterised by flow circuits, e.g. loops, located externally to the cells or cell casings
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/244—Secondary casings; Racks; Suspension devices; Carrying devices; Holders characterised by their mounting method
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/249—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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/271—Lids or covers for the racks or secondary casings
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/289—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by spacing elements or positioning means within frames, racks or packs
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/289—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by spacing elements or positioning means within frames, racks or packs
- H01M50/291—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by spacing elements or positioning means within frames, racks or packs characterised by their shape
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
Abstract
The invention provides an immersed liquid-cooling cylindrical battery pack module and an electric vehicle adopting the same, wherein the immersed liquid-cooling cylindrical battery pack module comprises a box body, a cylindrical battery arranged in the box body and a cover plate arranged at the top of the box body; the two side walls of the box body are respectively provided with a liquid inlet and a liquid outlet, one side of the interior of the box body, which is close to the liquid inlet, is provided with an inlet flow distribution plate, one side of the interior of the box body, which is close to the liquid outlet, is provided with an outlet flow convergence plate, the inlet flow distribution plate is provided with a plurality of layers of flow distribution holes from top to bottom, and correspondingly, the outlet flow convergence plate is provided with a plurality of layers of flow convergence holes from top to bottom; a clamping plate is also arranged in the box body and fixes the cylindrical battery in the box body; the cover plate is provided with a liquid supplementing hole, a top plate is hermetically installed between the cover plate and the cylindrical battery and is in a groove shape, liquid leakage holes are formed in two sides of the bottom of the top plate, and the liquid leakage holes are communicated with fluid inside the box body. The invention can improve the temperature uniformity among the cylindrical batteries to the maximum extent, reduce the liquid leakage risk and improve the cruising ability of the electric automobile.
Description
Technical Field
The invention relates to the technical field of thermal management of power batteries of new energy vehicles, in particular to an immersed liquid-cooled cylindrical battery pack module and an electric vehicle adopting the same.
Background
At present, along with the larger and larger battery capacity of the electric automobile, the dynamic property is better and better, and meanwhile, the charging time cannot be overlong, which means that the heat generation of the electric automobile in the charging and discharging process is increased. For a power lithium battery used by an electric automobile, the risk of thermal runaway exists when the temperature of the battery is too high, and the vehicle can be on fire or even explode under severe conditions, so that the life and property safety of passengers is damaged. The higher temperature consistency needs to be ensured among different power batteries, and the inconsistent service life of the batteries due to the excessively large temperature consistency difference among the batteries can also cause the large internal resistance difference of the batteries, so that the heat generation is further uneven, and the thermal runaway event of the batteries is caused.
The currently widely used power battery thermal management methods are air cooling and liquid cooling plate cooling. The cylinder battery module adopts the refrigerated form of liquid cooling board more, alternates a plurality of liquid cooling boards and sets up between the cylinder battery, and the liquid cooling board passes through heat conduction and battery heat transfer, but if the battery is too big at the heat production of charge-discharge in-process, the temperature uniformity demand between the heat dissipation demand that the liquid cooling board radiating mode can't satisfy the battery and the battery. The existing immersed cylindrical battery cooling module is not designed for the temperature uniformity inside the cylindrical battery, and the problem of local overheating is easily caused because the fluid speed inside the cylindrical battery is low. Meanwhile, because the immersed liquid cooling is that the cooling liquid directly contacts with the battery, certain weeping risk exists, and the novel immersed liquid cooling battery module must consider the weeping compensation function design of the automobile in the actual operation process.
Disclosure of Invention
Based on the defects in the prior art, the invention provides the immersion type liquid cooling cylindrical battery pack module and the electric vehicle adopting the same, so that the temperature uniformity among cylindrical batteries is improved to the maximum extent, and the liquid leakage risk is reduced.
In order to achieve the purpose, the invention adopts the following technical scheme:
an immersed liquid-cooling cylindrical battery pack module comprises a box body, a cylindrical battery arranged in the box body and a cover plate arranged at the top of the box body; the cooling device comprises a box body, a cooling liquid inlet, an inlet manifold plate, an outlet manifold plate, a plurality of layers of flow distribution holes and a plurality of layers of flow converging holes, wherein the two side walls of the box body are respectively provided with the liquid inlet and the liquid outlet, the cooling liquid enters the box body from the liquid inlet, the side, close to the liquid inlet, inside the box body is provided with the inlet flow distribution plate, the side, close to the liquid outlet, is provided with the outlet manifold plate, the inlet flow distribution plate is provided with the plurality of layers of flow distribution holes from top to bottom, and correspondingly, the outlet manifold plate is provided with the plurality of layers of flow converging holes from top to bottom; a clamping plate is also arranged in the box body and fixes the cylindrical battery in the box body; the cover plate is provided with a liquid supplementing hole, a top plate is hermetically installed between the cover plate and the cylindrical battery and is in a groove shape, liquid leakage holes are formed in two sides of the bottom of the top plate, and the liquid leakage holes are communicated with fluid inside the box body.
As one of the preferable schemes of the invention, one surface of the inlet splitter plate facing the liquid inlet is in a groove shape, and a splitter region is formed between the inlet splitter plate and the liquid inlet; the one side of export cylinder manifold towards the liquid outlet is the recess form, forms between export cylinder manifold and the liquid outlet and converges the district, the coolant liquid is single-phase coolant liquid, and its boiling point is higher, can not take place phase transition process basically in the battery package module normal operating process.
As one of the preferable schemes of the invention, the clamping plate comprises an upper clamping plate and a lower clamping plate, the upper clamping plate and the lower clamping plate are respectively provided with a cylindrical through hole and a heat exchange through hole which are arranged in a crossed manner, the cylindrical battery is arranged in the cylindrical through hole, the diameter of the heat exchange through hole is smaller than that of the cylindrical through hole, and the heat exchange through hole is used for heat exchange of cooling liquid between the upper clamping plate and the lower clamping plate.
As one preferable scheme of the present invention, fixing plates are disposed on both sides of the upper clamping plate and the lower clamping plate, fixing grooves are disposed in positions corresponding to the fixing plates in the box body, and the fixing plates are inserted into the fixing grooves to fix the upper clamping plate and the lower clamping plate.
As one of the preferable schemes of the invention, one end of each of the upper clamping plate and the lower clamping plate is arranged between two adjacent layers of the flow distribution holes of the inlet flow distribution plate; the other end is arranged between two adjacent confluence holes of the outlet confluence plate.
In a preferred embodiment of the present invention, the cover plate is further provided with a pressure control valve, and the pressure in the tank module is adjusted by the pressure control valve.
One of the preferable schemes of the invention is that one or more shunt plates are arranged between the cylindrical batteries and perpendicular to the flowing direction of the liquid.
The invention also comprises a controller, wherein the liquid inlet is provided with a flow control valve, one side of the box body close to the outlet confluence groove is provided with a temperature sensor, and the controller automatically controls the opening of the flow control valve according to the value of the temperature sensor.
The invention also provides an electric automobile which adopts one or more immersed liquid-cooling cylindrical battery pack modules.
As one of the preferable schemes of the invention, the immersed liquid-cooled cylindrical battery pack modules are oppositely arranged on an automobile chassis in pairs, a liquid inlet pipe is arranged in the middle of the automobile chassis and is communicated with a liquid inlet of each battery pack module, liquid outlet pipes are arranged on two sides of the automobile chassis and are communicated with a liquid outlet of each battery pack module, and a liquid supplementing pipe is arranged above the battery pack modules and is communicated with a liquid supplementing hole of each battery pack module.
After the technical scheme is adopted, the invention has the following advantages:
according to the invention, the inlet flow distribution plate and the outlet bus bar are arranged, so that the flow distribution of the cooling liquid and the terminal bus bar are realized, and the temperature uniformity in the cylindrical battery can be fully improved by combining the double-layer clamping plate and an automatic control means; with the cylinder battery submergence in the coolant liquid, compare in the cooling method of liquid cooling plate, can improve the cooling effect of cylinder battery greatly.
According to the invention, the top plate and the cover plate are arranged at the top of the cylindrical battery pack, and the cover plate and the top plate are provided with the liquid supplementing hole and the liquid leaking hole, so that the battery module can safely and stably work under the condition of leakage of the cooling liquid.
Drawings
Fig. 1 is a schematic view of an immersion liquid-cooled cylindrical battery pack module as described in example 1;
FIG. 2 is a side view of an immersed liquid-cooled cylindrical battery pack module as described in example 1;
FIG. 3 is a top view of the submerged liquid-cooled cylindrical battery pack module of embodiment 1;
fig. 4 is a front view of the submerged liquid-cooled cylindrical battery pack module of embodiment 1;
fig. 5 is a schematic cross-sectional view of an immersion type liquid-cooled cylindrical battery pack module according to embodiment 1;
fig. 6 is an assembly schematic diagram of a battery pack module of an electric vehicle chassis according to embodiment 2.
Reference numerals: box 10, inlet 11, liquid outlet 12, flow distribution region 13, converge district 14, punch holder fixed slot 15, punch holder fixed slot 18, lower plate fixed slot 16, lower plate fixed slot 17, import flow distribution plate 20, reposition of redundant personnel hole 21/22/23, cylinder battery 30, export flow distribution plate 40, converge hole 41/42/43, gasket 50, lower plate 60, lower plate fixed plate 61, lower plate cylinder through-hole 62, punch holder 70, punch holder fixed plate 71, punch holder cylinder through-hole 72, go up roof plate 80, weeping hole 81/82, upper cover plate 90, fluid infusion hole 91, pressure control valve 92, battery box module 100, feed liquor pipe 200/300, fluid infusion pipe 500/600.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and the described embodiments are only possible technical implementations of the present invention, and not all of them are possible. A person skilled in the art will be able to combine embodiments of the invention to create further embodiments without inventive step, which are also within the scope of the invention.
Example 1
As shown in fig. 1 to 5, the embodiment provides an immersion type liquid-cooled cylindrical battery pack module, which includes a case 10, a cylindrical battery 30 disposed in the case 10, and a cover plate 90 disposed on the top of the case; a liquid inlet 11 and a liquid outlet 12 are respectively arranged on two side walls of the box body 10, an inlet flow distribution plate 20 is arranged on one side of the interior of the box body 10 close to the liquid inlet 11, an outlet bus bar 40 is arranged on one side close to the liquid outlet 12, the inlet flow distribution plate 20 is provided with a plurality of layers of flow distribution holes 21/22/23 from top to bottom, and correspondingly, the outlet bus bar 40 is provided with a plurality of layers of flow collection holes 41/42/43 from top to bottom; a clamping plate is arranged in the box body 10 and fixes the cylindrical battery 30 in the box body; the cooling liquid enters the box body from the liquid inlet 11, and preferably, single-phase cooling liquid is adopted, the boiling point of the single-phase cooling liquid is high, and the phase change process basically cannot occur in the normal operation process of the battery pack module.
The cover plate 90 is provided with a liquid supplementing hole 91, a top plate 80 is hermetically installed between the cover plate and the cylindrical battery, the top plate 80 is in a groove shape, liquid leakage holes 81/82 are formed in two sides of the bottom of the top plate 80, and the liquid leakage holes are communicated with fluid inside the box body.
This embodiment adopts submergence formula cooling method, cools off cylinder battery package, and the coolant liquid gets into by box one side, gets into between the cylinder battery after the reposition of redundant personnel of import flow distribution plate, can be so that cylinder battery and coolant liquid fully contact, reduce the heat of cylinder battery. Meanwhile, after the cylindrical batteries are fixed by the clamping plates, the clamping plates can maintain the shunting state of the cooling liquid, and the uniformity of the temperature among the cylindrical batteries is improved.
In this embodiment, the inlet splitter plate 20 is in a groove shape, a splitter region 13 is formed between the inlet splitter plate and the liquid inlet, and the cooling liquid flows into the splitter region 13 from the liquid inlet 11 and is split by the splitter holes 21, 22 and 23 on the inlet splitter plate 20. The outlet manifold plate 40 is groove-shaped, and a manifold area 14 is formed between the outlet manifold plate and the liquid outlet 12, the cooling liquid flows from the inside of the tank 10 to the outlet manifold plate 40, and the cooling liquid is converged by the manifold holes 41, 42 and 43 on the outlet manifold plate 40 and then flows from the flow splitting area 14 to the liquid outlet 12.
The lower clamp 60 is installed in the lower clamp fixing groove 16 and the lower clamp fixing groove 17 of the case 10 by a lower clamp fixing plate 61, and the lower clamp cylindrical through holes 62 are arranged in a tight crossing.
The upper clamp 70 is installed in the upper clamp fixing grooves 15 and 18 of the case 10 by the upper clamp fixing plate 71, and the upper clamp cylindrical through holes 72 are arranged to be closely crossed.
The lower clamping plate cylindrical through holes 62 correspond to the upper clamping plate cylindrical through holes 72 in position one to one.
The cylindrical batteries 30 are arranged in the lower clamping plate cylindrical through hole 62 and the upper clamping plate cylindrical through hole 72, and the radial fixation of the cylindrical batteries 30 can be realized.
The both ends of punch holder 60 and lower plate 70 are all installed between adjacent two-layer convergent hole and reposition of redundant personnel hole for after the coolant liquid flowed in through the reposition of redundant personnel hole, the three layer construction that accessible punch holder and lower plate separated maintains the reposition of redundant personnel state and flows out to the coolant liquid, consequently, can make the coolant liquid distribute evenly between whole cylinder battery, thereby make the temperature even. Preferably, if the cylinder battery is more, the module is longer, can further set up one or more flow distribution plate between the cylinder battery to fully maintain the reposition of redundant personnel state, improve temperature uniformity. Preferably, the upper clamping plate and the lower clamping plate are also provided with heat exchange through holes (not shown in the figure), so that the heat exchange of the cooling liquid between the upper clamping plate and the lower clamping plate is increased, and the temperature uniformity is further improved.
Be equipped with flow control valve in inlet department, set up temperature sensor in the position that is close to the district 14 that converges, the controller is according to the flow or the velocity of flow of the temperature automatic control coolant liquid in the district that converges for the cylinder battery that is close to the liquid outlet also can obtain fully dispelling the heat.
Since the cylindrical battery is in direct contact with the coolant, there is a high possibility of a problem of leakage. In order to solve the leakage problem, the cover plate 90 is provided with the liquid supplementing hole 91 and the pressure control valve, and the pressure control valve 92 controls the pressure in the box body in real time, so that the damage caused by overlarge pressure difference between the inner pressure and the outer pressure in the box body is prevented.
The top plate 80 is arranged below the cover plate 90, the top plate 80 is hermetically installed between the cylindrical battery 30 and the cover plate 90 through the gasket 50, and the lower portion of the top plate 80 is attached to the cylindrical battery 30 to achieve axial fixing of the cylindrical battery 30.
The top plate 80 is of a groove structure, a plurality of liquid leakage holes 81 and 82 are formed in the periphery of the lower portion of the top plate respectively, and the liquid leakage holes 81 and 82 achieve communication between cooling liquid in the groove of the top plate and a cavity in the box body.
Under the horizontal state of battery box module 100, the height that the coolant submerges the lower part of upper plate 80 is 3 ~ 5 mm.
In extreme cases, the cooling liquid in the tank body leaks. At this moment, the liquid supplementing hole 91 of the cover plate 90 is opened, the cooling liquid enters the top plate 80 through the liquid supplementing hole, and then enters the cavity through the liquid leaking hole to complete the supplement of the cooling liquid, so that the battery module can work safely and stably under the condition of cooling liquid leakage. The coolant in the box also can upwards gush out through the weeping hole of roof 80, because roof 80 is the recess form for the coolant that gushes out can be stored, is convenient for recycle.
Example 2
As shown in fig. 6, the present embodiment provides an electric vehicle, which adopts the cylindrical battery pack module described in embodiment 1, and mounts the battery pack modules 100 on a vehicle chassis in a pair-to-pair manner.
The electric automobile adopting the cylindrical battery pack module can enable the battery to be always maintained in a proper temperature range in the operation process, and the cruising ability of the electric automobile is improved.
Claims (10)
1. An immersed liquid-cooling cylindrical battery pack module is characterized by comprising a box body, a cylindrical battery arranged in the box body and a cover plate arranged at the top of the box body; the cooling device comprises a box body, a cooling liquid inlet, an inlet manifold plate, an outlet manifold plate, a plurality of layers of flow distribution holes and a plurality of layers of flow converging holes, wherein the two side walls of the box body are respectively provided with the liquid inlet and the liquid outlet, the cooling liquid enters the box body from the liquid inlet, the side, close to the liquid inlet, inside the box body is provided with the inlet flow distribution plate, the side, close to the liquid outlet, is provided with the outlet manifold plate, the inlet flow distribution plate is provided with the plurality of layers of flow distribution holes from top to bottom, and correspondingly, the outlet manifold plate is provided with the plurality of layers of flow converging holes from top to bottom; a clamping plate is also arranged in the box body and fixes the cylindrical battery in the box body; the cover plate is provided with a liquid supplementing hole, a top plate is hermetically installed between the cover plate and the cylindrical battery and is in a groove shape, liquid leakage holes are formed in two sides of the bottom of the top plate, and the liquid leakage holes are communicated with fluid inside the box body.
2. The submerged liquid-cooled cylindrical battery pack module as recited in claim 1, wherein a surface of the inlet manifold facing the inlet port is recessed, and a manifold region is formed between the inlet manifold and the inlet port; one surface of the outlet bus plate facing the liquid outlet is groove-shaped, and a bus area is formed between the outlet bus plate and the liquid outlet; the cooling liquid is single-phase cooling liquid.
3. The submerged liquid-cooled cylindrical battery pack module as set forth in claim 1, wherein the clamping plate comprises an upper clamping plate and a lower clamping plate, the upper clamping plate and the lower clamping plate are provided with cylindrical through holes and heat exchange through holes arranged in a crossed manner, and the cylindrical battery is arranged in the cylindrical through hole; the diameter of the heat exchange through hole is smaller than that of the cylindrical through hole, and the heat exchange through hole is used for heat exchange of cooling liquid between the upper clamping plate and the lower clamping plate.
4. The submerged liquid-cooled cylindrical battery pack module as claimed in claim 2, wherein fixing plates are disposed on both sides of the upper clamping plate and the lower clamping plate, fixing grooves are disposed in positions corresponding to the fixing plates in the case, and the fixing plates are inserted into the fixing grooves to fix the upper clamping plate and the lower clamping plate.
5. The submerged liquid-cooled cylindrical battery pack module of claim 4, wherein one end of each of the upper clamping plate and the lower clamping plate is mounted between two adjacent layers of the shunting holes of the inlet shunting plate; the other end is arranged between two adjacent confluence holes of the outlet confluence plate.
6. The submerged, liquid-cooled cylindrical battery pack module of claim 1, wherein the cover plate is further provided with a pressure control valve through which pressure within the tank module is regulated.
7. The submerged, liquid-cooled cylindrical battery pack module of claim 1, further comprising one or more diverter plates positioned between the cylindrical batteries perpendicular to the direction of liquid flow.
8. The submerged liquid-cooled cylindrical battery pack module as claimed in claim 1, further comprising a controller, wherein the liquid inlet is provided with a flow control valve, a temperature sensor is arranged on one side of the interior of the tank body close to the outlet confluence groove, and the controller automatically controls the opening degree of the flow control valve according to the value of the temperature sensor.
9. An electric vehicle employing one or more submerged liquid-cooled cylindrical battery pack modules according to any of claims 1-8.
10. The electric vehicle as claimed in claim 9, wherein the submerged liquid-cooled cylindrical battery pack modules are installed on the vehicle chassis in pairs, each two of the submerged liquid-cooled cylindrical battery pack modules are opposite to each other, a liquid inlet pipe is arranged in the middle of the vehicle chassis and is communicated with a liquid inlet of each battery pack module, liquid outlet pipes are arranged on two sides of the vehicle chassis and are communicated with a liquid outlet of each battery pack module, and a liquid replenishing pipe is arranged above each battery pack module and is communicated with a liquid replenishing hole of each battery pack module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210655799.2A CN114976382A (en) | 2022-06-10 | 2022-06-10 | Immersion type liquid cooling cylindrical battery pack module and electric automobile adopting same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210655799.2A CN114976382A (en) | 2022-06-10 | 2022-06-10 | Immersion type liquid cooling cylindrical battery pack module and electric automobile adopting same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114976382A true CN114976382A (en) | 2022-08-30 |
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Family Applications (1)
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| CN202210655799.2A Pending CN114976382A (en) | 2022-06-10 | 2022-06-10 | Immersion type liquid cooling cylindrical battery pack module and electric automobile adopting same |
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