CN115458853A - Battery system and vehicle - Google Patents

Battery system and vehicle Download PDF

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Publication number
CN115458853A
CN115458853A CN202110644011.3A CN202110644011A CN115458853A CN 115458853 A CN115458853 A CN 115458853A CN 202110644011 A CN202110644011 A CN 202110644011A CN 115458853 A CN115458853 A CN 115458853A
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CN
China
Prior art keywords
battery system
desiccant
drying
battery
battery pack
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202110644011.3A
Other languages
Chinese (zh)
Inventor
王坤
荆俊雅
***
成磊
赵宏远
赵世超
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.)
Yutong Bus Co Ltd
Original Assignee
Yutong Bus Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Yutong Bus Co Ltd filed Critical Yutong Bus Co Ltd
Priority to CN202110644011.3A priority Critical patent/CN115458853A/en
Publication of CN115458853A publication Critical patent/CN115458853A/en
Pending legal-status Critical Current

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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/233Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions
    • H01M50/24Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions adapted for protecting batteries from their environment, e.g. from corrosion
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/26Drying gases or vapours
    • B01D53/261Drying gases or vapours by adsorption
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/30Controlling by gas-analysis apparatus
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60LPROPULSION 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
    • B60L50/00Electric propulsion with power supplied within the vehicle
    • B60L50/50Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
    • B60L50/60Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/249Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders specially adapted for aircraft or vehicles, e.g. cars or trains
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/258Modular batteries; Casings provided with means for assembling
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2257/00Components to be removed
    • B01D2257/80Water
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2220/00Batteries for particular applications
    • H01M2220/20Batteries in motive systems, e.g. vehicle, ship, plane
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Electrochemistry (AREA)
  • Analytical Chemistry (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Power Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Secondary Cells (AREA)

Abstract

The invention provides a battery system and a vehicle, and belongs to the field of safety protection of power batteries of new energy automobiles. The battery system provided by the invention has the advantages that the gas entering the battery pack in the pressure balancing process of the battery pack is dried, so that the gas in the battery pack is ensured to be in a dry state, the generation of condensation of the battery pack is inhibited, and the circuit system of the whole vehicle is further protected.

Description

Battery system and vehicle
Technical Field
The invention relates to a battery system and a vehicle, and belongs to the field of safety protection of new energy automobile power batteries.
Background
The water content in the air can be reduced along with the temperature reduction, and when the air with certain temperature and humidity meets the surface of an object with lower temperature, the temperature of the air around the surface of the object is reduced to be lower than the gas saturation, and condensation can be formed on the surface of the object. The condensation needs to satisfy 2 conditions of difference in temperature and gas humidity simultaneously, and liquid cooling battery coolant temperature sets up about 5 ~ 25 ℃ usually, and the cooling plate and near spare part surface temperature near the cooling plate when liquid cooling system opens near this scope, in the environment of high temperature and high humidity, battery package self needs carry out atmospheric pressure with external environment and balances, will inhale the air of certain humidity, meets cold object surface and will be at the battery package internal condensation when the air of high humidity.
Along with the large-scale application of the liquid cooling battery system in new energy automobiles, the problem of condensation of the battery pack is increasingly prominent, and under the environment of high temperature and high humidity, temperature jump, voltage jump and battery pack insulation faults caused by condensation occur after the battery liquid cooling system is operated for a long time, and the battery pack is expensive to maintain and replace after sale.
The patent document with the publication number of CN110137408A provides a battery pack with a dehumidification function, an air drying box and a water tank are required to be installed below a battery, at least 5 air outlets are arranged above the battery, the installation of the air drying box and the water tank below the battery can influence the reliability of a mounting and fixing structure of the whole battery pack, each battery pack needs to be installed, the whole vehicle needs a large space, and the improvement of the space utilization rate of the whole vehicle is not facilitated; set up 5 at least air outlets above the battery, can influence the battery package protection level and can't realize IP67 or IP68, influence the battery reliability.
Patent document CN107994147A proposes a battery dehumidifying method, which requires a pressurizing device to be added to the whole vehicle, a battery pack needs an inlet and an outlet, which need to be opened simultaneously during operation, and the vehicle has insulation and safety accidents caused by water entering the battery when wading.
Patent document CN110165317A discloses an integrated dehumidification system for a battery pack, in which a set of system is added inside or outside the battery pack, a fan is used to suck in outside air, the air is dehumidified through a labyrinth type drying air duct filled with a desiccant, and an electromagnetic valve is added at an air outlet to serve as a switch for controlling air outlet of the battery. This scheme may affect the inability of the battery pack to achieve either IP67 or IP68 protection levels.
Disclosure of Invention
The invention aims to provide a battery system and a vehicle, which are used for solving the problems that a battery pack of the vehicle is poor in anti-condensation effect and is easy to enter liquid water in the liquid cooling process.
In order to achieve the above object, the present invention provides a battery system including a battery pack and a drying duct, the battery pack including an airtight housing including at least two vent holes, the vent hole of each battery pack being connected to the drying duct; a dryer used for drying gas is arranged at an outlet of the drying pipeline; and the airtight shell and the drying pipeline are filled with dry gas when the battery system leaves a factory.
The invention has the beneficial effects that: the dryer is arranged on the drying pipeline connected with the battery pack in the battery system, and the gas entering the battery system is dried through the dryer, so that the generation of liquid cooling process condensation of the battery pack during charging and discharging is inhibited, the gas in the battery pack is ensured to be in a dry state in a certain range, and the safety of a circuit system of a vehicle is protected.
Further, in the above system, the dryer includes a desiccant containing device for containing a desiccant.
Further, in the above system, the desiccant in the desiccant container may change its behavior visually as the humidity increases; and an observation window for observing the drying agent is arranged on the shell of the dryer.
The beneficial effects of doing so are: the material with obviously changed water absorption property is used as the drying agent, the using condition of the drying agent is observed through the observation window, and the drying agent or the dryer can be replaced in time when the drying capacity of the drying agent is deteriorated.
Further, in the above-mentioned system, still include humidity transducer, humidity transducer sets up in the drier holds the device for detect the humidity of drier, humidity transducer is connected with vehicle control unit.
The beneficial effects of doing so are: the moisture content of the desiccant is detected through the humidity sensor, the drying capacity of the desiccant is judged, the driver is prompted in the cab, the dryer does not need to be observed frequently, and the effect is better than that of an observation window.
Further, in the above system, the drying pipeline is provided with a gas path debugging interface for replacing gas.
The beneficial effects of doing so are: when the battery system is overhauled and maintained, gas of the battery system is replaced through the gas path debugging interface, the gas state of the battery system can be detected, and the maintenance cost of the battery system is reduced.
A battery system comprises a battery pack and a drying pipeline, wherein the battery pack comprises an airtight shell, at least two air vents are arranged on the airtight shell, and the air vent of each battery pack is connected with the drying pipeline or provided with a vent valve; a dryer used for drying gas is arranged at an outlet of the drying pipeline; and the airtight shell and the drying pipeline are filled with drying gas when the battery system leaves a factory.
The invention has the beneficial effects that: the dryer is arranged on the drying pipeline connected with the battery pack in the battery system, the gas entering the battery system is dried through the dryer, the generation of condensation in the liquid cooling process of the battery pack during charging and discharging is inhibited, and the system is different from the system in that the system exhausts outwards through the vent valve when the air pressure is balanced, does not need to exhaust through the drying pipeline, and prolongs the service life of the dryer.
Further, in the above system, the dryer comprises a desiccant holding means for holding a desiccant.
Further, in the above system, the desiccant in the desiccant container may have a visible property change with the increase of humidity; and an observation window for observing the drying agent is arranged on the shell of the dryer.
Further, in the above-mentioned system, still include humidity transducer, humidity transducer sets up in the drier holds the device for detect the humidity of drier, humidity transducer is connected with vehicle control unit.
Further, in the above system, an air path debugging interface for replacing gas is arranged on the drying pipeline.
A vehicle adopts the battery system.
Drawings
FIG. 1 is a schematic diagram of embodiment 1 of the system of the present invention;
FIG. 2 is a schematic diagram of embodiment 2 of the system of the present invention;
FIG. 3 is a block flow diagram of an embodiment of the system of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments.
System example 1:
as shown in fig. 1, the battery system comprises a drying pipeline and at least one battery pack, at least 2 air inlets and outlets (namely air vents) are arranged on the airtight shell of each battery pack, the air inlets and outlets of the battery packs are connected with the drying pipeline of the battery system, and the protection grade of IP68 can be met after the air inlets and outlets are connected with the pipeline.
And a drying pipeline of the battery system is communicated with the outside through a dryer. The desicator holds the device and overhauls the maintenance module including the drier, and the desicator adopts the drier to carry out the drying to the air current of business turn over battery system, and the desicator still has the visual prompt facility in life-span. The other parts of the dryer except the hole communicated with the outside for ventilation are hermetically arranged, so that the contact between the drying pipeline and the outside air is reduced.
The service life visual prompt function can be specifically a transparent glass observation window arranged on the dryer, and the observation window and the dryer are arranged in a sealing mode. At the moment, a material with obviously changed properties after water absorption, such as a drying agent which changes color when absorbing water, drying agent powder hardened by damp or a material with volume change after absorbing water can be placed in the drying agent containing device, and the drying effect of the drying agent can be judged by observing the property change of the drying agent through the observation window.
For example, anhydrous copper sulfate, which is a white solid and turns blue upon absorption of water, is used as a drying agent, and the color change of the anhydrous copper sulfate can be observed through a transparent glass on a dryer. If the color of the anhydrous copper sulfate in the dryer is observed to be blue, the drying capacity of the drying agent is poor, and the drying agent or the dryer needs to be replaced in time.
As another implementation manner of the service life visualization function, a humidity sensor may be disposed in the desiccant container for detecting the humidity of the desiccant, the humidity sensor is connected to the vehicle control unit through the CAN network, the vehicle control unit receives humidity information, and the humidity of the plurality of desiccants exceeds a preset humidity standard, so that the desiccant is considered to have a poor drying effect, and a driver in the cab is prompted.
The dryer of the battery system is disassembled, replaced and maintained through the maintenance module.
The gas path debugging interface has the function of plugging by a plug or self-plugging and is used for replacing gas in the battery system during debugging or maintenance and plugging the gas path debugging interface after replacement is finished.
The battery system of the present embodiment is further described below with reference to fig. 3:
according to the invention, the original initial gas in the battery pack is emptied by filling the dry gas into the battery pack when the battery pack is delivered, until the gas in the battery pack is completely replaced by the dry gas, (or the dry gas is not required to be replaced when the humidity of the control environment is lower during production), so that the gas in the battery system is ensured to be the dry gas, and the balance between the air pressure in the battery system and the external atmospheric pressure is ensured through the drier during the transportation or charging and discharging processes of the battery system. When positive pressure exists in the battery pack, the gas in the battery pack is exhausted outwards from the drying pipeline through the dryer to release pressure, and the humidity change of the gas in the battery pack cannot be influenced; when negative pressure exists in the battery pack, the external air pressure is higher than the air pressure in the battery pack, and the external air is dried by the dryer and then inflated into the battery pack, so that the air in the battery system is always in a dry state.
If the service life of the dryer is indicated to be expired (namely the drying effect of the dryer is poor), the dryer is replaced and the gas in the battery system is replaced to be dry gas.
System example 2:
as shown in fig. 2, the battery system includes at least one battery pack, and the housing of each battery pack has at least 2 air inlets and outlets (i.e., vents), wherein 1 air inlet and outlet is connected to the dry pipe of the battery system, and the other 1 air inlet and outlet is provided with a vent valve, and the air inlet and outlet can satisfy the protection level of IP68 after being connected to the pipe and the vent valve.
The vent valve adopts one-way vent valve or two-way vent valve, if adopt one-way vent valve need be higher than certain pressure in battery system the back to the case outside exhaust, if adopt two-way constant pressure vent valve, need satisfy when the battery package in positive pressure reaches outside exhaust after certain pressure, the negative pressure is not ventilative in the battery or with the ventilative threshold value setting of negative pressure some height, can not frequently touch the negative pressure and open in vehicle normal operating.
And a drying pipeline of the battery system is communicated with the outside through a dryer. The desicator holds the device and overhauls the maintenance module including the drier, and the desicator adopts the drier to carry out the drying to the air current of business turn over battery system, and the desicator still has the visual prompt facility in life-span. The other parts of the dryer except the hole communicated with the outside for ventilation are hermetically arranged, so that the contact between the drying pipeline and the outside air is reduced.
The service life visual prompt function can be specifically a transparent glass observation window arranged on the dryer, and the observation window and the dryer are arranged in a sealing mode. At this time, a material with a property which can be obviously changed after water absorption, such as a drying agent which can be discolored after water absorption, drying agent powder which is hardened by damp or a material with a volume which can be changed after water absorption, can be placed in the drying agent containing device, and the drying effect of the drying agent can be judged by observing the property change of the drying agent through the observation window.
For example, anhydrous copper sulfate, which is a white solid and turns blue upon absorption of water, is used as a drying agent, and the color change of the anhydrous copper sulfate can be observed through a transparent glass on a dryer. If the color of the anhydrous copper sulfate in the dryer is observed to be blue, the drying capacity of the drying agent is poor, and the drying agent or the dryer needs to be replaced in time.
As another implementation manner of the service life visualization function, a humidity sensor may be disposed in the desiccant container for detecting the humidity of the desiccant, the humidity sensor is connected to the vehicle control unit through the CAN network, the vehicle control unit receives humidity information, and the humidity of the plurality of desiccants exceeds a preset humidity standard, so that the desiccant is considered to have a poor drying effect, and a driver in the cab is prompted.
The dryer of the battery system is disassembled, replaced and maintained through the maintenance module.
The gas path debugging interface has a plug plugging or self-plugging function and is used for replacing gas in the battery system during debugging or maintenance and plugging the gas path debugging interface after replacement is completed.
The battery system of the present embodiment is further described below with reference to fig. 3:
according to the invention, the dry gas is filled into the battery pack when the battery pack leaves a factory, the original initial gas in the battery pack is emptied until the gas in the battery pack is completely replaced by the dry gas (or the dry gas is not required to be replaced when the environmental humidity is controlled to be low during production), so that the gas in the battery system is ensured to be the dry gas, and the balance between the internal air pressure of the battery system and the external atmospheric pressure is ensured through the drier during the transportation or charging and discharging processes of the battery system. When the pressure in the battery pack is positive, the gas in the battery pack is exhausted outwards from the drying pipeline through the dryer for pressure relief, and the humidity change of the gas in the battery pack cannot be influenced; when negative pressure exists in the battery pack, the external air pressure is higher than the air pressure in the battery pack, and the external air is dried by the dryer and then inflated into the battery pack, so that the air in the battery system is always in a dry state.
If the service life of the dryer is indicated to be expired (namely the drying effect of the dryer is poor), the dryer is replaced and the gas in the battery system is replaced by dry gas.
The embodiment of the vehicle is as follows:
the vehicle of the present invention employs the battery system in the system embodiment, which has been described for clarity in the system embodiment and will not be described herein.

Claims (11)

1. A battery system is characterized by comprising a battery pack and a drying pipeline, wherein the battery pack comprises an airtight shell, the airtight shell comprises at least two air vents, and the air vents of each battery pack are connected with the drying pipeline; a dryer used for drying gas is arranged at an outlet of the drying pipeline; and the airtight shell and the drying pipeline are filled with dry gas when the battery system leaves a factory.
2. The battery system of claim 1, wherein the desiccant comprises a desiccant holding device for holding a desiccant.
3. The battery system of claim 2, wherein the desiccant in the desiccant container changes its behavior visually as humidity increases; and an observation window for observing the drying agent is arranged on the shell of the dryer.
4. The battery system of claim 2, further comprising a humidity sensor disposed in the desiccant container for detecting humidity of the desiccant, wherein the humidity sensor is connected to the vehicle controller.
5. The battery system of claim 4, wherein an air passage debugging interface for replacing gas is arranged on the drying pipeline.
6. The battery system is characterized by comprising a battery pack and a drying pipeline, wherein the battery pack comprises an airtight shell, at least two air vents are arranged on the airtight shell, and the air vent of each battery pack is connected with the drying pipeline or provided with an air vent valve; a dryer used for drying gas is arranged at an outlet of the drying pipeline; and the airtight shell and the drying pipeline are filled with dry gas when the battery system leaves a factory.
7. The battery system of claim 6, wherein the desiccant container comprises a desiccant holding device for holding a desiccant.
8. The battery system of claim 7, wherein the desiccant in the desiccant container visibly changes in its behavior as humidity increases; and an observation window for observing the drying agent is arranged on the shell of the dryer.
9. The battery system of claim 8, further comprising a humidity sensor disposed in the desiccant container for detecting humidity of the desiccant, wherein the humidity sensor is connected to the vehicle controller.
10. The battery system of claim 9, wherein an air passage debugging interface for replacing gas is arranged on the drying pipeline.
11. A vehicle characterized by employing the battery system according to any one of claims 1 to 10.
CN202110644011.3A 2021-06-09 2021-06-09 Battery system and vehicle Pending CN115458853A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110644011.3A CN115458853A (en) 2021-06-09 2021-06-09 Battery system and vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110644011.3A CN115458853A (en) 2021-06-09 2021-06-09 Battery system and vehicle

Publications (1)

Publication Number Publication Date
CN115458853A true CN115458853A (en) 2022-12-09

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CN202110644011.3A Pending CN115458853A (en) 2021-06-09 2021-06-09 Battery system and vehicle

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CN (1) CN115458853A (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2896163Y (en) * 2006-04-29 2007-05-02 北京工业大学 Drying box of fully-enclosed electronic equipment
CN207994008U (en) * 2018-01-30 2018-10-19 中航锂电(洛阳)有限公司 A kind of battery pack liquid cooling apparatus, battery pack and vehicle
CN210516847U (en) * 2019-10-05 2020-05-12 上海保岭新能源科技有限公司 Battery pack ventilation drying and filtering system
CN212874572U (en) * 2020-08-07 2021-04-02 郑州宇通集团有限公司 Power supply system

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2896163Y (en) * 2006-04-29 2007-05-02 北京工业大学 Drying box of fully-enclosed electronic equipment
CN207994008U (en) * 2018-01-30 2018-10-19 中航锂电(洛阳)有限公司 A kind of battery pack liquid cooling apparatus, battery pack and vehicle
CN210516847U (en) * 2019-10-05 2020-05-12 上海保岭新能源科技有限公司 Battery pack ventilation drying and filtering system
CN212874572U (en) * 2020-08-07 2021-04-02 郑州宇通集团有限公司 Power supply system

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