CN103579711B - Power battery liquid cooling system - Google Patents
Power battery liquid cooling system Download PDFInfo
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- CN103579711B CN103579711B CN201210279943.3A CN201210279943A CN103579711B CN 103579711 B CN103579711 B CN 103579711B CN 201210279943 A CN201210279943 A CN 201210279943A CN 103579711 B CN103579711 B CN 103579711B
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- liquid
- cooling system
- liquid cooling
- refrigerator
- ice chest
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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
- 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
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Abstract
The invention discloses a power battery liquid cooling system which comprises a power battery, a module rack, a liquid cooling wall, a refrigerator and a circulation pump, wherein the power battery is arranged inside the module rack; the module rack is arranged on the liquid cooling wall. The power battery liquid cooling system is characterized by further comprising an independent liquid cooling box and a power supply converting device. Due to adoption of the power battery liquid cooling system, not only is the cooling requirement of the system met, but also the battery energy can be saved, and the output efficiency is improved.
Description
Technical field
The present invention relates to electric automobile field, more particularly to a kind of liquid cooling system of electric automobile battery box.
Background technology
With raising of the mankind to environmental protection requirement, the research and application of electric automobile is increasingly by the weight of people
Depending on.The power of electric automobile is provided by the battery case equipped with multiple electrokinetic cells.Electrokinetic cell is by recharge-discharge-charging
Alternately, the mode of recycling works.To ensure electric automobile normal work, battery case is typically required for cooling system.
It is a kind of common technical scheme that liquid is cold.Energy needed for generally liquid is cold is provided by electrokinetic cell itself.Obviously, this makes power current
The energy output in pond is under some influence.To solve this problem, the invention provides a practical cold skill of electrokinetic cell liquid
Art scheme, not only can meet the cooling requirement of system, also have the advantages that to save the energy content of battery.
The content of the invention
To realize the above-mentioned technical functionality of liquid cooling system, the present invention adopts following design：
A kind of electrokinetic cell liquid cooling system, including electrokinetic cell, module frame, liquid cold wall, refrigerator, circulating pump are described dynamic
Power battery is mounted in the module frame, and the module is rack-mounted in the liquid cold wall, and the electrokinetic cell is protected with the liquid cold wall
Hold contact, it is characterised in that：The liquid cooling system also include independent liquid ice chest, the refrigerator, circulating pump, independent liquid ice chest,
To be arranged in series, coolant can be linked to be liquid cold wall by the refrigerator, circulating pump, independent liquid ice chest and the liquid cold wall
Circulate in closed-system.The battery liquid cooling system, also including power supply change-over device, can using external power source or be respectively
Electrokinetic cell in system is powered for the liquid cooling system.
The independent liquid ice chest refers to which is not the liquid ice chest of autogamy inside refrigerator, is to be independently arranged at liquid cooling system
In, can design volume and shape as needed, it is possible to and the liquid ice chest of other liquid cooling portions parts arbitrarily connection.Obviously, the liquid
Ice chest can also be made of one structure with the liquid cold wall, will the part of the liquid cold wall be formed with the cavity of a constant volume
Structure, constitutes plate shape liquid ice chest.
Described being arranged in series is referred under the promotion of circulating pump, after coolant is flowed out from refrigerator, by following two modes
Circulate：1. coolant is flowed out from refrigerator, first passes through independent liquid ice chest, then through liquid cold wall, returns refrigerator.2. cold
But liquid is flowed out from refrigerator, first passes through liquid cold wall, then through independent liquid ice chest, returns refrigerator.
When the independent liquid ice chest is made of one with the liquid cold wall, equally arrange by the series relationship.
The battery liquid cooling system of design according to more than, the power supply change-over device include hand switch, or temporal sequence control
Device processed, or intelligence control system, its working method is：During the power battery charging, the liquid cooling system is by outside
Power supply is powered, the refrigerator unlatching work；During the electrokinetic cell discharges, the liquid cooling system is by the electrokinetic cell
Power supply, the refrigerator can work by one of following 3 kinds of modes：
The refrigerator is operated with manual switches control and opens and the working time；
The start-up time of the refrigerator and working time are by a program timer by the time being previously set
Programme-control, its numerical value are the 0%-80% of the electrokinetic cell discharge time；
The unlatching of the refrigerator and working time pass through an intelligence control system real-time control.
The intelligence control system, refers to by the device group such as temperature sensor, intelligent controller, relay, permutator
Into control system, can be turned on and off by determining program built-in in advance by intelligent controller according to the temperature signal of system
The refrigerator.
The battery liquid cooling system of design according to more than, can further be provided with phase-change material in the independent liquid ice chest, constitute phase transformation
Heat exchanger.Further increase the thermal capacitance of system using the latent heat of phase change of phase-change material.The phase-change material can adopt compound phase
Become material.
The battery liquid cooling system of design according to more than, the phase-change material are mounted in canister, the canister
Cumulative volume is the 20%-80% of the independent liquid ice chest volume.
The battery liquid cooling system of design, the module frame, the liquid cold wall, the independent liquid ice chest or described according to more than
Phase-change heat-exchanger is mounted in a seal box, constitutes battery case.
The seal box refers to all junctions on tank wall, and all connection ducts adopt design of Sealing Structure, to meet
Dustproof and waterproof is required.
The battery liquid cooling system of design according to more than, the seal box can also be designed using heat insulation structural, outer to completely cut off
Adverse effect of boundary's environment to system thermal control.
Heat insulation structural design refer to all tank walls using in heat-barrier material or structure, case with case owning between outer
Connector is using the device or part for having heat insulating function.
Liquid cold wall in the present invention, liquid ice chest can adopt aluminium alloy or steel to make.Coolant can adopt deionized water, pure
Water, ethanol, glycerol, ethylene glycol and their mixed solution.
Liquid cooling system provided by the present invention, because having independent liquid ice chest or phase-change heat-exchanger, with larger thermal capacity,
Therefore refrigerator need not Jing be normally open can meet requirement of the system to temperature.By external power source, filling according to electrokinetic cell
Discharge cycle, the quantity of the appropriate volume and phase-change material for selecting liquid ice chest, you can realization makes the energy of electrokinetic cell whole
Be mainly used in charging-discharging cycle output, and with little or no for itself cooling, while and can meet system temperature want
The technical goal asked.
Description of the drawings
System and structural representation of the Fig. 1 for embodiment 1；
System and structural representation of the Fig. 2 for embodiment 2；
System and structural representation of the Fig. 3 for embodiment 3；
System and structural representation of the Fig. 4 for embodiment 4；
Wherein, description of reference numerals is as follows：
1 refrigerator, 2 drain pipe, 3 circulating pump
4 liquid cold wall, 5 battery modules frame, 6 independent liquid ice chest
7 temperature sensor, 8 liquid back pipe, 9 program timer
10 metal circular tube, 11 phase-change heat-exchanger, 12 temperature sensor
13 seal box, 14 intelligent controller, 15 heat-insulating and sealing case
16 on and off switch
Embodiment 1
Electrokinetic cell liquid cooling system as shown in Figure 1, including electrokinetic cell, module frame 5, liquid cold wall 4, refrigerator 1, circulation
Pump 3, the electrokinetic cell are attached separately in 11 module framves 5, and module frame 5 uses MZ labellings in figure.Liquid cold wall 4 in figure is by upper
Lower 2 pieces of transverse slats and 4 pieces of risers are welded.Each plate is built-in with cooling liquid tube, the cooling liquid tube in 2 pieces of transverse slats respectively with 4 pieces of risers in
Cooling liquid tube connection.11 module framves 5 are attached separately on 4 pieces of risers, and the electrokinetic cell being mounted in module frame 5 keeps connecing with riser
Touch and thus cooled down.System also includes an independent liquid ice chest 6.
As shown in the direction of arrow in figure, in system, the circulating path of coolant is：Drain pipe 2 of the coolant from refrigerator 1
Flow out, Jing circulating pumps 3, in the upper cross plate of influent cold wall 4, then stream enters 4 pieces of risers respectively from upper cross plate, flow out from 4 pieces of risers
Stream enters lower cross plate afterwards, enters in liquid ice chest 6 after flowing out from lower cross plate, flows back to refrigerator from Jing liquid back pipes 8 after the outflow of liquid ice chest 6
1。
In this example, liquid cold wall 4, liquid ice chest 6 are made using aluminium alloy.Coolant adopts deionized water.
System is equipped with power supply change-over device, and external power source or the electrokinetic cell in system can be used respectively to be the liquid in this example
Cooling system is powered.Specific works mode is：
During power battery charging, liquid cooling system is powered by external power source.Refrigerator 1 opens work.Flow into refrigeration
The coolant of device 1 obtains deep refrigerating, and the temperature of system is reduced.
During electrokinetic cell discharges, liquid cooling system is disconnected with external power source, turns to be powered by the electrokinetic cell of internal system.
Hand switch 16 is provided between refrigerator 1 and electrokinetic cell, in this example, switch 16 is off, even if refrigerator 1 exists
Off working state is in during battery discharge.The coolant flowed in refrigerator 1 is flowed out without refrigeration.The now temperature of system
Can rise, but because the thermal capacitance of system it is larger, upon discharging between it is not very long when, the temperature of system can still meet requirement.
Associated conduit device described in this example required for liquid cooling system, power supply apparatus, valve, display instrument etc. can bases
Known technology is arranged, and this example is no longer auspicious to be stated.
The system of this example is relatively simple, cools down by external power source, and it is little for the energy of itself cooling to make electrokinetic cell,
Energy almost all is exported, while making the temperature of system meet requirement, is the advantage of this programme.This example is adapted in fast charging and discharging formula
Apply in battery system.
Obviously, the system in this example can also be using another kind of mode of operation：Switch 16 is made in closure state, even if refrigeration
Device 1 is in running order during electrokinetic cell electric discharge.This pattern is suitable for the longer system of discharge cycle.
Embodiment 2
Battery liquid cooling system as shown in Figure 2, which with the difference of embodiment 1 is：
System is also including a control by device compositions such as program timer 9 and related relay, permutatoies
System processed.
During electrokinetic cell discharges, liquid cooling system turns to be powered by the electrokinetic cell in system, the wherein work of refrigerator 1
State is controlled by program timer 9.The unlatching working time of refrigerator 1 can be flexibly set according to practical situation.At this
In example：The discharge time of electrokinetic cell is set to 6 minutes, and the start-up time of refrigerator 1 is set to electrokinetic cell discharge time
1/3 moment, i.e. 2 minutes unlatching refrigerators 1 after electrokinetic cell electric discharge, the working time of refrigerator 1 is set as into power current
The 50% of tank discharge time, i.e. refrigerator work 3 minutes.Specific control circuit and actuator can be realized according to known technology,
This example is no longer auspicious to be stated.
Coolant in this example adopts ethylene glycol.
Remaining structure of this example and operation principle are same as Example 1.
This example increased the control system of program timer 9 and correlation, electrokinetic cell discharge during part when
Between in open refrigerator 1, compared with embodiment 1, can make system electrokinetic cell electric discharge during temperature it is more steady.
Embodiment 3
Fig. 3 is an alternative embodiment of the invention.This example with the difference of embodiment 2 is：
The liquid ice chest of this example constitutes phase-change heat-exchanger 11 built with phase-change material.Can using the latent heat of phase change of phase-change material
The thermal capacitance of increase system.Phase-change material is encapsulated in metal circular tube 10, and in this example, the cumulative volume of all pipes is set to phase-change heat-exchange
The 50% of the volume of the liquid ice chest of device 11.Phase-change material is from the composite phase-change material that paraffin is main material.Metal in this example
Pipe is made with aluminium alloy, and is welded into one with liquid ice chest.
The circulation Lu Jingwei of coolant in this example：Coolant is flowed out from the drain pipe 2 of refrigerator 1, Jing circulating pumps 3, is flowed into
To in the liquid ice chest of phase-change heat-exchanger 11, it is flowed in the lower cross plate of liquid cold wall 4 again after flowing out from liquid ice chest, then from lower cross plate point
Stream does not enter 4 pieces of risers, enters upper cross plate from stream after 4 pieces of risers outflows, flows back to refrigerator 1 from Jing liquid back pipes 8 after upper cross plate outflow.
Additionally, the control system of this example further comprises temperature sensor 12, and intelligent controller 14 is employed, constitute intelligence
Control system.
During electrokinetic cell discharges, according to the system temperature situation for real-time monitoring, intelligent controller 14 is according to built-in
Determining program assign instruction, open and close refrigerator 1, make the control of system temperature more accurate.This example is suitable for electric discharge
Time longer situation.
Liquid cold wall 4 in this example, module frame 5,11 grade part of phase-change heat-exchanger are placed in a seal box 13, constitute one
Individual sealed cell case.In this example, seal box 13 is made up of carbon steel, all junctions on tank wall, or connecting hole adopts rubber
Rubber cushion is sealed, and plus can apply fluid sealant.Make battery case that there is dustproof and waterproof function.
Coolant in this example adopts the mixed solution of pure water and ethylene glycol.
Remaining structure ＆ working mechanism of this example is same as Example 2.
Embodiment 4
Liquid cooling system as shown in Figure 4, it with the difference of embodiment 3 is：
Liquid ice chest in this example has made integrative-structure with liquid cold wall 4.I.e. the inside of the lower cross plate of liquid cold wall 4 in figure complete
Cavity structure is made entirely, plate shape liquid ice chest is constituted.In this example, phase-change material is enclosed in this plate shape liquid ice chest, constitute
Plate shape phase-change heat-exchanger 11.In this example, phase-change material is equally encapsulated in aluminum pipe.The cumulative volume of all pipes is phase transformation
The 60% of 11 volume of heat exchanger.
The circulation Lu Jingwei of coolant in this example：Coolant is flowed out from the drain pipe 2 of refrigerator 1, Jing circulating pumps 3, is flowed into
To in the liquid ice chest of plate shape phase-change heat-exchanger 11, after flowing out from liquid ice chest, stream enters 4 pieces of risers respectively again, after flowing out from 4 pieces of risers
Stream enters upper cross plate, flows back to refrigerator 1 from Jing liquid back pipes 8 after upper cross plate outflow.That is plate shape phase-change heat-exchanger 11 and liquid cold wall 4 its
Remaining part point still keeps series relationship.
Compared with embodiment 3, the more compact structure of this example, the space on riser saved can increase the quantity of module frame.
This example has put 12 module framves, thus can put more batteries, the characteristics of this is this example.
In the same manner, can be so that the upper cross plate of liquid cold wall 4 be also made liquid ice chest or phase-change heat-exchanger, further to increase system
Thermal capacitance.
Liquid cold wall 4 in this example, module frame 5,11 grade of phase-change heat-exchanger are placed in a heat-insulating and sealing case 15, constitute every
Heat seal battery case.Tank wall adopts inner steel lining heat preserving cotton structure, all to be respectively arranged with plastics with metal connecting piece that is being connected outside case
Or rubber sleeve, to realize heat insulating function.This example is very high suitable for ambient temperature, or nearby also has the feelings of other thermals source
Condition, to avoid adverse effect of the environment to the system thermal control.
Remaining structure of this example and operation principle are same as Example 3.
Claims (6)
1. a kind of electrokinetic cell liquid cooling system, including electrokinetic cell, module frame, liquid cold wall, refrigerator, circulating pump, the power
Battery is mounted in the module frame, and the module is rack-mounted in the liquid cold wall, and the electrokinetic cell is kept with the liquid cold wall
Contact, it is characterised in that：The liquid cooling system also includes independent liquid ice chest, the refrigerator, circulating pump, independent liquid ice chest, liquid
, to be arranged in series, coolant can be in closing for being linked to be by the refrigerator, circulating pump, independent liquid ice chest and the liquid cold wall for cold wall
Circulate in syzygy system, described battery liquid cooling system, also including power supply change-over device, can using external power source or be respectively
Electrokinetic cell in system is powered for the liquid cooling system.
2. battery liquid cooling system according to claim 1, the power supply change-over device include hand switch, or temporal sequence
Controller, or intelligence control system, its working method is：During the power battery charging, the liquid cooling system is by outer
Portion's power supply is powered, the refrigerator unlatching work；During the electrokinetic cell discharges, the liquid cooling system is by the power current
Pond powers, and the refrigerator is by the work of one of following 3 kinds of modes：
A. the refrigerator is operated with manual switches control and opens and the working time；
B. the start-up time of the refrigerator and working time by a program timer by the time journey being previously set
Sequence is controlled, and its numerical value is the 0%-80% of the electrokinetic cell discharge time;
C. the unlatching of the refrigerator and working time are by an intelligence control system real-time control.
3. battery liquid cooling system according to claim 2, the independent liquid ice chest constitute phase inversion built with phase-change material
Hot device.
4. battery liquid cooling system according to claim 3, the phase-change material are mounted in canister, the canister
Cumulative volume be the independent liquid ice chest volume 20%-80%.
5. battery liquid cooling system according to claim 4, the module frame, the liquid cold wall, the independent liquid ice chest or
The phase-change heat-exchanger is mounted in a seal box.
6. battery liquid cooling system according to claim 5, the seal box are designed using heat insulation structural.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210279943.3A CN103579711B (en) | 2012-08-08 | 2012-08-08 | Power battery liquid cooling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210279943.3A CN103579711B (en) | 2012-08-08 | 2012-08-08 | Power battery liquid cooling system |
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| Publication Number | Publication Date |
|---|---|
| CN103579711A CN103579711A (en) | 2014-02-12 |
| CN103579711B true CN103579711B (en) | 2017-04-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210279943.3A Active CN103579711B (en) | 2012-08-08 | 2012-08-08 | Power battery liquid cooling system |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105958155A (en) * | 2016-06-07 | 2016-09-21 | 深圳市酷凌时代科技有限公司 | Phase-change material energy-storage based cooling method and apparatus for power battery |
| CN109980312B (en) * | 2017-12-27 | 2022-04-08 | 宇通客车股份有限公司 | Temperature equalization control system of vehicle-mounted liquid cooling battery box |
| CN109449528B (en) * | 2018-09-27 | 2021-08-03 | 江苏大学 | Phase-change energy storage liquid cooling plate, battery pack active thermal management system and control method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101841072A (en) * | 2010-02-09 | 2010-09-22 | 北汽福田汽车股份有限公司 | Liquid cooling system of storage battery and liquid cooling method of storage battery |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101651241A (en) * | 2009-09-15 | 2010-02-17 | 杨玉生 | Temperature control method and accumulator cabinet of phase-change material temperature-control accumulator cabinet for communications |
| CN102593553B (en) * | 2012-03-01 | 2014-11-05 | 奇瑞汽车股份有限公司 | Battery pack with temperature adjusting function |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101841072A (en) * | 2010-02-09 | 2010-09-22 | 北汽福田汽车股份有限公司 | Liquid cooling system of storage battery and liquid cooling method of storage battery |
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| CN103579711A (en) | 2014-02-12 |
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