CN109273799A - A kind of lithium battery low-temperature start system and low-temperature start method - Google Patents
A kind of lithium battery low-temperature start system and low-temperature start method Download PDFInfo
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- CN109273799A CN109273799A CN201811150462.6A CN201811150462A CN109273799A CN 109273799 A CN109273799 A CN 109273799A CN 201811150462 A CN201811150462 A CN 201811150462A CN 109273799 A CN109273799 A CN 109273799A
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- lithium battery
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- temperature start
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- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 73
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 72
- 238000000034 method Methods 0.000 title claims abstract description 14
- 239000001301 oxygen Substances 0.000 claims abstract description 39
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 39
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 38
- 238000007084 catalytic combustion reaction Methods 0.000 claims abstract description 31
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 29
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims abstract description 21
- 239000001257 hydrogen Substances 0.000 claims abstract description 21
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 21
- 238000005868 electrolysis reaction Methods 0.000 claims abstract description 8
- 239000003054 catalyst Substances 0.000 claims description 38
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical group [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 21
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 claims description 14
- 238000006555 catalytic reaction Methods 0.000 claims description 13
- 239000003792 electrolyte Substances 0.000 claims description 10
- 229910001339 C alloy Inorganic materials 0.000 claims description 9
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 9
- 238000006243 chemical reaction Methods 0.000 claims description 6
- 238000012546 transfer Methods 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 4
- 239000012528 membrane Substances 0.000 claims description 4
- MHOVAHRLVXNVSD-UHFFFAOYSA-N rhodium atom Chemical compound [Rh] MHOVAHRLVXNVSD-UHFFFAOYSA-N 0.000 claims description 3
- 229910018879 Pt—Pd Inorganic materials 0.000 claims description 2
- 230000005611 electricity Effects 0.000 claims description 2
- 229910052741 iridium Inorganic materials 0.000 claims description 2
- GKOZUEZYRPOHIO-UHFFFAOYSA-N iridium atom Chemical compound [Ir] GKOZUEZYRPOHIO-UHFFFAOYSA-N 0.000 claims description 2
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 7
- 229910001416 lithium ion Inorganic materials 0.000 description 7
- 238000010792 warming Methods 0.000 description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 230000007423 decrease Effects 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 101100194817 Caenorhabditis elegans rig-6 gene Proteins 0.000 description 3
- KJTLSVCANCCWHF-UHFFFAOYSA-N Ruthenium Chemical compound [Ru] KJTLSVCANCCWHF-UHFFFAOYSA-N 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000005485 electric heating Methods 0.000 description 3
- 229910002804 graphite Inorganic materials 0.000 description 3
- 239000010439 graphite Substances 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 230000003197 catalytic effect Effects 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- 229910052493 LiFePO4 Inorganic materials 0.000 description 1
- 229920000557 Nafion® Polymers 0.000 description 1
- 229910001252 Pd alloy Inorganic materials 0.000 description 1
- 229910001260 Pt alloy Inorganic materials 0.000 description 1
- ZVKRVGZVXQYLPZ-UHFFFAOYSA-N [Li].[V].P(O)(O)(O)=O Chemical compound [Li].[V].P(O)(O)(O)=O ZVKRVGZVXQYLPZ-UHFFFAOYSA-N 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 229910001882 dioxygen Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007772 electrode material Substances 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 150000002641 lithium Chemical class 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000011232 storage material Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012360 testing method 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
- H01M10/615—Heating or keeping warm
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
- H01M10/625—Vehicles
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/6595—Means for temperature control structurally associated with the cells by chemical reactions other than electrochemical reactions of the cells, e.g. catalytic heaters or burners
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The present invention proposes a kind of lithium battery low-temperature start system, for providing heat to lithium battery；Including apparatus for electrolyzing, hydrogen-holder, oxygen storage tank, catalytic combustion system and heat-exchanger rig；The apparatus for electrolyzing includes anode region and cathodic region, the anode region connects the oxygen storage tank, the cathodic region connects the hydrogen-holder, and the oxygen storage tank and hydrogen-holder are all connected with the catalytic combustion system, and the catalytic combustion system connects the heat-exchanger rig by heat-conduction medium.The present invention also proposes to load the electric car of the lithium battery low-temperature start system and a kind of lithium battery low-temperature start method.Lithium battery low-temperature start system proposed by the present invention, may be implemented ultralow startup temperature, can start at subzero 100 DEG C；Will not extraneoas loss lithium battery energy, braking energy can be recycled and apply to water electrolysis hydrogen producing.
Description
Technical field
The invention belongs to field of new energy technologies, and in particular to a kind of lithium battery low-temperature start system and cold-starting side
Method.
Background technique
It is the advantages that lithium ion battery is with its long-life, high-energy-density, self-discharge rate are low and memory-less effect, secondary in the whole world
Battery Market occupies leading position, is widely applied in fields such as portable electronic device, industrial application and electric cars.
But when lithium ion battery is in low temperature environment (temperature be subzero), relative under room temperature, battery occur discharge capacity decaying,
Phenomena such as discharge voltage decline, the decline of circulating ratio performance, electrode analysis lithium.General lithium ion battery is in -40 DEG C of discharge capacities
Only 20% or so of room temperature capacity.The inferior cryogenic property of lithium battery, seriously constrains electric car, electric bus, electricity
Dynamic bicycle etc. cold area in north popularization and use and military special type battery extremely cold area operational need.Therefore,
No matter consider from civilian or military angle, it is significant to develop a kind of method that can improve lithium battery cryogenic property.
Improving battery cryogenic property at present, there are mainly two types of approach, and first is to start with grinding from each composition material of inside battery
Study carefully solution, including developing new electrode material, new electrolyte system, and the preparation process etc. of optimization battery, still
The progress of this respect is very slow at present.Another resolving ideas is to install pre-heating system additional to outside batteries, under cryogenic conditions
It is preheated when starting to battery, it is out of service after waiting batteries to reach assigned temperature.
CN203367437U proposes the LiFePO4 material that poor performance at low temperatures is replaced using the excellent phosphoric acid vanadium lithium of cryogenic property
Expect to improve the low-temperature startup performance of lithium battery.CN104916848 A discloses a kind of method of secondary cell cold-starting, should
Method is used flexible graphite paper to substitute perhaps part substitution metal completely and is placed directly within as the collector of electrode or by graphite paper
It is used as heating element between positive and negative anodes, by applying external power supply to graphite paper, heats it rapidly, realizes to the quick of battery
Preheating.But above-mentioned measure cold-starting time is longer, starts more very under ultralow temperature.
Summary of the invention
For the shortcoming of art technology, put present invention aims to solve lithium battery in cryogenic conditions operation
Phenomena such as capacitance fall-off, discharge voltage decline, the decline of circulating ratio performance, electrode analysis lithium, therefore propose that a kind of lithium battery is low
Startup temperature system.
Second object of the present invention is the electric car for proposing to load the lithium battery low-temperature start system.
Third object of the present invention is to propose a kind of lithium battery low-temperature start method.
Above-mentioned purpose technical solution to realize the present invention are as follows:
A kind of lithium battery low-temperature start system, for providing heat to lithium battery；Including apparatus for electrolyzing, hydrogen-holder,
Oxygen storage tank, catalytic combustion system and heat-exchanger rig；
The apparatus for electrolyzing includes anode region and cathodic region, and the anode region connects the oxygen storage tank, the cathode
Area connects the hydrogen-holder, and the oxygen storage tank and hydrogen-holder are all connected with the catalytic combustion system, the catalysis burning
Device connects the heat-exchanger rig by heat-conduction medium.
Wherein, anode catalyst layer is provided in anode region, the anode catalyst layer is Pt/C, Pd/C catalyst or Pt/
One of Pd/C alloy catalyst；Cathode catalysis layer is provided in the cathodic region, the cathode catalysis layer is Ir/C catalysis
One of agent, Ir-Ru/C or Ir/Rh/C alloy catalyst.
Wherein, electrolyte is placed in the apparatus for electrolyzing, the anode region and cathodic region are separated with diaphragm,
The diaphragm is proton exchange membrane, and the electrolyte is water；Or
The diaphragm is alkaline exchange membrane, and the electrolyte is NaOH or KOH solution.
The anode catalyst layer or cathode catalyst layer can be coated directly on diaphragm.It can also be arranged in anode region
Anode is coated with anode catalyst on anode, and cathode is arranged in cathodic region, the coated cathode catalyst on cathode.
Wherein, catalyst is provided in the catalytic combustion system, the catalyst is Pt/C catalyst or Pt-Pd/C
Alloy catalyst.
A preferred technical solution of the present invention is that the heat-conduction medium is air, and the heat-exchanger rig dissipates for fin
Hot device, the catalytic combustion system are placed in the cavity of fin radiator, and the fin of fin radiator is opposite with lithium battery.
Another optimal technical scheme of the invention is that the heat-conduction medium is air or liquid, the heat exchange dress
Set the plate heat exchanger including the lithium battery bottom is arranged in；Or the coil pipe including being centered around the lithium battery external.
Preferably, the catalytic combustion system connects the apparatus for electrolyzing by circulating water pipe.
Wherein, the lithium battery connects the apparatus for electrolyzing by conducting wire.
A kind of electric car is mounted with the lithium battery low-temperature start system, is provided with braking in the electric car
Energy recycling system, brake energy recovering system connect the apparatus for electrolyzing.
Lithium battery and automobile brake, which recover energy, to power to apparatus for electrolyzing, recovered energy preferentially with automobile brake
It powers to water electrolysis.
A kind of lithium battery low-temperature start method, using the lithium battery low-temperature start system comprising operation:
Recovered energy with automobile and provide the energy of electrolysis for apparatus for electrolyzing, the subsequent electrolytically generated hydrogen of apparatus for electrolyzing and
Oxygen is separately stored in hydrogen-holder and oxygen storage tank；In cold-starting, hydrogen and oxygen enter catalytic combustion system hair
Raw exothermic heat of reaction, the heat of releasing are transmitted to lithium battery by heat-exchanger rig and are rapidly heated for it, and hydrogen and oxygen reaction generates water and returns
It flow to apparatus for electrolyzing.
The beneficial effects of the present invention are:
Lithium battery low-temperature start system proposed by the present invention, 1) ultralow startup temperature may be implemented, it can be opened at subzero 100 DEG C
It is dynamic；2) will not extraneoas loss lithium battery energy, braking energy can be recycled and apply to water electrolysis hydrogen producing；3) especially for heavy duty
Gas vehicle, battery capacity is big, with the obvious advantage, this lithium battery low-temperature start method relative to the hot resume speed of conventional heating methods more
Fastly.
Detailed description of the invention
Fig. 1 is lithium battery low-temperature start system schematic diagram of the invention.
Fig. 2 is direct heat transfer schematic diagram in embodiment 1.
Fig. 3 is that heat transferring medium heats schematic diagram in embodiment 2.
Wherein, 1 is lithium battery, and 2 be apparatus for electrolyzing, and 3 be hydrogen-holder, and 4 be oxygen storage tank, and 5 be catalytic combustion system,
6 be heat-exchanger rig.
Specific embodiment
Illustrate the present invention below by most preferred embodiment.Those skilled in the art institute it should be understood that, embodiment is only used to
It illustrates rather than for limiting the scope of the invention.
In embodiment, unless otherwise instructed, means used are the means of this field routine.
Embodiment 1:
Referring to Fig. 1, a kind of lithium ion low-temperature start system, composed structure include: apparatus for electrolyzing 2, hydrogen-holder 3,
Oxygen storage tank 4, catalytic combustion system 5.The apparatus for electrolyzing includes anode region and cathodic region, and the anode region connects the oxygen
Gas storage tank 4, the cathodic region connect the hydrogen-holder 3, and the oxygen storage tank and hydrogen-holder are all connected with the catalysis burning
Device 5, the catalytic combustion system connect heat-exchanger rig by heat-conduction medium.Lithium battery 1 connects the water power by conducting wire
Solve device 2.
Catalyst is set in catalytic combustion system 5, and the catalyst is Pt/C catalyst.Catalytic combustion system 5 passes through
Circulating water pipe connects the apparatus for electrolyzing.
Referring to fig. 2, in the present embodiment, heat-conduction medium is air, and heat-exchanger rig 6 is fin radiator, catalysis burning dress
It is placed in the cavity of fin radiator, the fin of fin radiator is opposite with lithium battery.
In the present embodiment, electrolyte used in apparatus for electrolyzing is water, anode region and cathodic region with Nafion proton exchange
Film separates, and the anode catalyst of the anode region coated on one side of diaphragm is Pt/C catalyst, the yin of the cathodic region coated on one side of diaphragm
Electrode catalyst is Ir/Ru/C alloy catalyst.
The hydrogen and oxygen generated by water electrolysis respectively enters hydrogen and oxygen storage tank storage.
The lithium battery low-temperature start system method of operation are as follows:
When lithium battery needs cold-starting, it is anti-under Pt metal catalytic that hydrogen and oxygen transmission are entered into catalytic combustion system
Heat and water should be generated, the water for reacting generation can be re-introduced into water electrolytic cell to reach water circulation.And react generation
Heat is directly passed to lithium battery by way of heat transfer by heat.
Using this system, lithium battery can be warming up to 0 DEG C in 30s from -100 DEG C, and 110s can be warming up to 25 from -100 DEG C
℃。
Embodiment 2
A kind of lithium ion low-temperature start system, composed structure include: apparatus for electrolyzing 2, hydrogen-holder 3, oxygen storage tank
4, catalytic combustion system 5.The apparatus for electrolyzing includes anode region and cathodic region, and the anode region connects the oxygen storage tank,
The cathodic region connects the hydrogen-holder, and the oxygen storage tank and hydrogen-holder are all connected with the catalytic combustion system, described
Catalytic combustion system connects heat-exchanger rig 6 by heat-conduction medium.Lithium battery 1 connects the apparatus for electrolyzing 2 by conducting wire.
Catalyst is set in catalytic combustion system 5, and the catalyst is Pt/Pd/C catalyst.Catalytic combustion system 5 is logical
It crosses circulating water pipe and connects the apparatus for electrolyzing.
Wherein electrolyte used in apparatus for electrolyzing is the NaOH lye of 0.2mol/L, and anode catalyst Pt/Pd/C is applied
For cloth on carbon anode, cathod catalyst is Ir/Rh/C alloy catalyst, is coated on carbon cathode.The hydrogen generated by water electrolysis
Hydrogen and oxygen storage tank storage are respectively enterd with oxygen.When lithium battery needs cold-starting, hydrogen and oxygen transmission are entered to urge
Water electrolytic cell can be re-introduced by changing burner reaction generation heat and water, the water for reacting generation under the catalysis of Pt and Pd alloy
In to reach water circulation.And react the heat generated and lithium battery is transferred heat to by heat exchanger, heat exchange mode is shown in Fig. 3.
Catalytic combustion system is connected with heat-exchanger rig 6, and the heat-exchanger rig is coil pipe, and coil pipe is centered around lithium battery external.
Catalyst combustion reaction generates heat and heats heat transferring medium into heat exchanger, and heat transferring medium therein is liquid, subsequent heat transferring medium
Battery is heated into heat-exchanger rig.Using the low-temperature start system, lithium battery can be warming up to 0 from -100 DEG C in 45s
DEG C, 163s can be warming up to 25 DEG C from -100 DEG C.
Embodiment 3
A kind of lithium ion low-temperature start system, composed structure include: apparatus for electrolyzing, hydrogen-holder, oxygen storage tank, urge
Change burner.Wherein electrolyte used in apparatus for electrolyzing is NaOH lye, and anode catalyst is Pt/C metal, cathode catalysis
Agent is Ir/Ru/C alloy.Other are arranged with embodiment 2.
The hydrogen and oxygen generated by water electrolysis respectively enters hydrogen and oxygen storage tank storage, and wherein hydrogen is by hydrogen storage material
Storage is absorbed, high pressure stores oxygen in gaseous form.When lithium battery needs cold-starting, hydrogen and oxygen are imported into catalysis combustion
Burn device, reaction generates heat and water under Pt/C metal catalytic, react generation water can be re-introduced into water electrolytic cell from
And reach water circulation.And it reacts the heat generated and heat is directly passed to lithium battery by way of heat transfer.It is using this
System, lithium battery can be warming up to 0 DEG C in 50s from -100 DEG C, and 170s can be warming up to 25 DEG C from -100 DEG C.
Embodiment 4
A kind of lithium ion low-temperature start system, composed structure include: apparatus for electrolyzing, hydrogen-holder, oxygen storage tank, urge
Change burner.Wherein electrolyte used in apparatus for electrolyzing is NaOH lye, and anode catalyst is Pt/C metal, cathode catalysis
Agent is Ir/Ru/C alloy.
Catalytic combustion system is connected with heat-exchanger rig.In the present embodiment, heat-exchanger rig is plate heat exchanger, is to change with air
Thermal medium.Plate heat exchanger is placed in the lower section of lithium battery, the heat transfer for being generated catalytic combustion system by way of convection current
To lithium battery.
Other are arranged with embodiment 2.
Comparative example 1:
A kind of lithium battery system, the system include 80kWh mould group, but not set battery heating device.By the system -40
Cold-starting at DEG C, working capacity is only capacity 22% under room temperature, and the system is unable to run under the conditions of being placed in -100 DEG C.
Comparative example 2:
A kind of tradition lithium battery low-temperature start system, which includes 80kWh lithium battery mould group, mould group electric heating sheets.It will
The system is placed at -40 DEG C, and electric heating sheets start-up operation preheats system.
Lithium battery in embodiment and comparative example system is tested, (capacity is kept the capacity retention ratio of -40 DEG C of measurement
Rate=- 40 DEG C capacity/25 DEG C capacity).The detection system heating-up time when catalytic combustion system or electric heating sheets are run, test temperature
Degree point is located in the middle part of lithium battery mould group, as a result see the table below.
Table 1: the performance test results
Embodiment 5
A kind of electric car is equipped with the low-temperature start system of embodiment 1.Braking energy is provided in the electric car
Recovery system, brake energy recovering system connect the apparatus for electrolyzing.
When automobilism, the energy of brake energy recovering system recycling provides energy, apparatus for electrolyzing for apparatus for electrolyzing
Electrolytically generated hydrogen and oxygen are separately stored in hydrogen-holder and oxygen storage tank；In cold-starting, hydrogen and oxygen enter
Catalytic combustion system reacts heat release, and the heat of releasing is transmitted to lithium battery by heat-exchanger rig and is rapidly heated for it, hydrogen-oxygen
It is reflowable to apparatus for electrolyzing that solid/liquid/gas reactions generate water.
Above embodiment be only preferred embodiments of the present invention will be described, not to the scope of the present invention into
Row limits, and without departing from the spirit of the design of the present invention, this field ordinary engineering and technical personnel is to technical side of the invention
The all variations and modifications that case is made, should fall within the scope of protection determined by the claims of the present invention.
Claims (10)
1. a kind of lithium battery low-temperature start system, for providing heat to lithium battery；It is characterised in that it includes apparatus for electrolyzing,
Hydrogen-holder, oxygen storage tank, catalytic combustion system and heat-exchanger rig；
The apparatus for electrolyzing includes anode region and cathodic region, and the anode region connects the oxygen storage tank, and the cathodic region connects
The hydrogen-holder is connect, the oxygen storage tank and hydrogen-holder are all connected with the catalytic combustion system, the catalytic combustion system
The heat-exchanger rig is connected by heat-conduction medium.
2. lithium battery low-temperature start system according to claim 1, which is characterized in that be provided with anode in anode region and urge
Change layer, the anode catalyst layer includes one of Pt/C, Pd/C catalyst or Pt/Pd/C alloy catalyst；The cathodic region
Inside it is provided with cathode catalysis layer, the cathode catalysis layer includes Ir/C catalyst, in Ir-Ru/C or Ir/Rh/C alloy catalyst
One kind.
3. lithium battery low-temperature start system according to claim 1, which is characterized in that place electricity in the apparatus for electrolyzing
Xie Zhi, the anode region and cathodic region are separated with diaphragm,
The diaphragm is proton exchange membrane, and the electrolyte is water；Or
The diaphragm is alkaline exchange membrane, and the electrolyte is NaOH or KOH solution.
4. lithium battery low-temperature start system according to claim 1, which is characterized in that set in the catalytic combustion system
It is equipped with catalyst, the catalyst is Pt/C catalyst or Pt-Pd/C alloy catalyst.
5. lithium battery low-temperature start system according to any one of claims 1 to 4, which is characterized in that the heat transfer is situated between
Matter is air, and the heat-exchanger rig is fin radiator, and the catalytic combustion system is placed in the cavity of fin radiator, fin
The fin of radiator is opposite with lithium battery.
6. lithium battery low-temperature start system according to any one of claims 1 to 4, which is characterized in that the heat transfer is situated between
Matter is air or liquid, and the heat-exchanger rig includes the plate heat exchanger that the lithium battery bottom is arranged in；Or including enclosing
It is wound on the coil pipe of the lithium battery external.
7. lithium battery low-temperature start system according to any one of claims 1 to 4, which is characterized in that the catalysis burning
Device connects the apparatus for electrolyzing by circulating water pipe.
8. lithium battery low-temperature start system according to any one of claims 1 to 4, which is characterized in that the lithium battery is logical
It crosses conducting wire and connects the apparatus for electrolyzing.
9. a kind of electric car, which is characterized in that be mounted with lithium battery cold-starting according to any one of claims 1 to 8 system
It unites, brake energy recovering system is provided in the electric car, brake energy recovering system connects the apparatus for electrolyzing.
10. a kind of lithium battery low-temperature start method, using lithium battery low-temperature start system according to any one of claims 1 to 8,
It is characterised in that it includes operation:
It is recovered energy with automobile and provides the energy of electrolysis for apparatus for electrolyzing, the electrolytically generated hydrogen of subsequent apparatus for electrolyzing and oxygen
It is separately stored in hydrogen-holder and oxygen storage tank；In cold-starting, hydrogen and oxygen enter catalytic combustion system and occur instead
Heat release is answered, the heat of releasing is transmitted to lithium battery by heat-exchanger rig and is rapidly heated for it, and hydrogen and oxygen reaction generates water and is back to
Apparatus for electrolyzing.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114108021A (en) * | 2021-11-19 | 2022-03-01 | 中国华能集团清洁能源技术研究院有限公司 | Self-heating starting water electrolysis hydrogen production system and operation method thereof |
| CN117317455A (en) * | 2023-11-27 | 2023-12-29 | 成都理工大学工程技术学院 | Power battery low-temperature emergency heating starting method based on thermochemical energy storage |
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| CN117317455B (en) * | 2023-11-27 | 2024-02-23 | 成都理工大学工程技术学院 | Power battery low-temperature emergency heating starting method based on thermochemical energy storage |
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