CN106025401A - Secondary battery - Google Patents

Secondary battery Download PDF

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Publication number
CN106025401A
CN106025401A CN201610446863.0A CN201610446863A CN106025401A CN 106025401 A CN106025401 A CN 106025401A CN 201610446863 A CN201610446863 A CN 201610446863A CN 106025401 A CN106025401 A CN 106025401A
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CN
China
Prior art keywords
secondary cell
battery core
heat absorbent
battery
naked battery
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
CN201610446863.0A
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Chinese (zh)
Inventor
邹武俊
张小文
金海族
王卫涛
李星
段剑
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.)
Contemporary Amperex Technology Co Ltd
Original Assignee
Contemporary Amperex Technology 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.)
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Publication date
Application filed by Contemporary Amperex Technology Co Ltd filed Critical Contemporary Amperex Technology Co Ltd
Priority to CN201610446863.0A priority Critical patent/CN106025401A/en
Publication of CN106025401A publication Critical patent/CN106025401A/en
Pending legal-status Critical Current

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Classifications

    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/42Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/4235Safety or regulating additives or arrangements in electrodes, separators or electrolyte
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2200/00Safety devices for primary or secondary batteries
    • 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

Abstract

The invention relates to the technical field of energy storage, in particular to a secondary battery. The secondary battery comprises a naked battery cell, a shell and a safety protection component, wherein the safety protection component comprises at least one of a decomposed endothermic agent and a phase-change endothermic agent. According to the secondary battery, thermal runaway of the secondary battery caused by heat accumulation is avoided; and meanwhile, the secondary battery has the advantages that materials are convenient to select, the temperature is controllable and the reliability is high.

Description

A kind of secondary cell
Technical field
The application relates to technical field of energy storage, specifically, relates to a kind of secondary cell.
Background technology
Along with the development in the fields such as the digital domains such as mobile phone, new-energy automobile, energy storage, to such as with life The energy density of the lithium ion battery being closely connected alive has had higher requirement.More very, lithium ion Battery typically use inflammable and explosive solvent as electrolyte, therefore facet during lithium ion battery security Face test and challenge.
In daily life, lithium battery heat abuse phenomenon is inevitable, and affects the peace of people constantly Entirely, such as insert in baking box when digital product imprudences such as mobile phones;Or in new-energy automobile or energy storage Field, when the cooling system of battery lost efficacy.Improve the hot abuse of battery, perhaps can increase The time of escape, increase a guarantee for life.
Heat abuse can simply be divided into three processes, one, ambient temperature rise, two, cause battery from Heat production, three, battery too high from heat production temperature, if thermal accumlation cannot discharge can cause thermal runaway; If but could be reduced or discharge internal temperature (such as Vent opens) by other approach, might be just It is not result in thermal runaway.Ambient temperature is changeable, when especially running into some extreme condition, and temperature Uncontrollable.In order to improve the security performance of battery, can only by improve battery performance to adapt to outside Boundary's mal-condition.
In consideration of it, special, the application is proposed.
Summary of the invention
Present invention purpose is to propose a kind of secondary cell.
In order to complete the purpose of the application, the technical scheme of employing is:
The application relates to a kind of secondary cell, including naked battery core and housing, contains in described secondary cell Safety block, containing decomposing in heat absorbent, decalescence agent extremely in described safety block One, and described decomposition heat absorbent less is not hydroxide.
Preferably, described decomposition heat absorbent includes the inorganic chemical decomposing and generating water in a heated condition Thing or organic compound and decompose and do not generate the material of water in a heated condition, described decomposition and Do not generate the preferred carbamide of material of water.
Preferably, described inorganic compound is in hydroxide, acid salt, basic salt, hydrate At least one;At least one in the preferred ammonium oxalate of described acid salt, sodium bicarbonate, described alkali formula At least one in the preferred basic copper carbonate of salt, basic magnesium carbonate, described hydrate preferably four water acetic acid In manganese, Aluminium chloride hexahydrate, copper sulphate pentahydrate, Potassium aluminum sulfate dodecahydrate, washing soda at least A kind of;Described organic compound is selected from the compound containing at least one carboxyl, preferably ethanedioic acid.
Preferably, described safety block directly or indirectly contacts with described naked battery core;
Preferably, when described secondary cell is duricrust battery, described secondary cell also includes dielectric film, Position set by described safety block is naked battery core in described naked battery core, described at least two Between, between described naked battery core and described dielectric film, between described dielectric film and described housing;
When described secondary cell is soft-package battery, the position set by described safety block is selected from In described naked battery core, between described naked battery core and described housing.
The application further relates to a kind of secondary cell, including naked battery core and housing, contains in described secondary cell There is safety block, containing decomposing heat absorbent, described decomposition heat absorbent in described safety block For hydroxide;
When described secondary cell is duricrust battery, described secondary cell also includes dielectric film, described peace Position set by full guard parts is described at least two between naked battery core, described naked battery core and institute State between dielectric film, between described dielectric film and described housing;
When described secondary cell is soft-package battery, the position set by described safety block is selected from Between described naked battery core and described housing;
In the preferred zinc hydroxide of described hydroxide, magnesium hydroxide, aluminium hydroxide, Copper hydrate extremely Few one.
Preferably, the endothermic temperature of described safety block is 60~300 DEG C.
Preferably, described heat absorbent is solid powder preparation, liquid preparation or gel preparation.
Preferably, described safety block also includes the storing apparatus for packing described heat absorbent, Described heat absorbent is fixed on the inside of described storing apparatus;Preferably, described storing apparatus for seal or Unsealed.
Preferably, described heat absorbent by coating, bonding, inlay by the way of be fixed on described accommodate dress The inside put;When described storing apparatus is for sealing structure, will be positioned over by the way of decompression is packed Described heat absorbent in described storing apparatus is fixed.
Preferably, total heat absorption enthalpy of heat absorbent described in described secondary cell is more than 100J;Described two Containing described heat absorbent 0.1g~200g in primary cell.
The technical scheme of the application at least has a following beneficial effect:
Secondary cell provided herein is by adding heat absorbent in battery, it is possible in ambient temperature Absorb heat by pyrolysis when being increased to degree of danger, it is possible to reduce battery from heat production, it is to avoid battery Heat accumulation.Secondary cell provided herein has selection convenience, temperature-controllable, reliability height Etc. advantage.
In the preferred technical scheme of the application, can generate under high temperature when the secondary cell of the application uses The heat absorbent of water, during heat is abused, by generating water under uniform temperature, more effectively reduces electricity Pond from heat production.Meanwhile, the water of generation provides more H free radical, can induce lithium electricity Other ingredient breakdown in pond produce substantial amounts of gas, open the explosion-proof valve of duricrust battery or make Soft Roll The pocket bag of battery ruptures, thus avoids heat accumulation and cause the thermal runaway of secondary cell.
Detailed description of the invention
Below in conjunction with specific embodiment, the application is expanded on further.Should be understood that these embodiments are only used In explanation the application rather than restriction scope of the present application.
In order to improve battery security performance under hot abuse conditions, present applicant proposes a kind of secondary electricity Pond, including naked battery core and housing, by arranging the safety block containing heat absorbent, reduce or Eliminate secondary cell from heat production, it is to avoid heat accumulation causes thermal runaway.Duricrust secondary cell also includes top Lid and the explosion-proof control being arranged on top cover.Heat absorbent includes decomposing heat absorbent and decalescence agent two Plant, and decomposition heat absorbent is not hydroxide.
Decomposition reaction is typically the endothermic reaction, and the application utilizes the heat absorption during decomposition reaction to reach Reduce the effect from heat production of inside battery.Decompose during heat absorbent is included in again pyrolysis and produce The material of water, in thermal decomposition process, do not produce material two class of water.
In the optimal technical scheme of the application, safety block adds the decomposition suction decomposing heat absorption Thermit powder, generates water by pyrolysis.Owing to water is the material of nature heat content maximum, indiscriminate in heat During with, safety block generates water at a certain temperature, thus effectively reduces oneself of battery Heat production, it is to avoid the heat accumulation of battery.Meanwhile, the water of generation provides more H free radical, Other ingredient breakdown in lithium battery can be induced to produce substantial amounts of gas, open the explosion-proof of duricrust battery Valve or make the pocket bag of soft-package battery rupture, reaches to improve the effect of heat abuse.
In the optimal technical scheme of the application, thermal decomposition process does not produce the material of water by heat Aerogenesis in catabolic process, it is also possible to reach open the explosion-proof valve of duricrust battery or make soft-package battery The effect that pocket bag ruptures.
In this application, the heat absorbent in safety block can be absorbed heat by phase transformation, thus drops Low inside battery from heat production, it is to avoid the heat accumulation of battery.
Preferably, phase-change material can be applied with thermal cracking material simultaneously, by the most different heat absorption temperature What degree was interval reaches optimal endothermic effect.
As a kind of improvement of the application secondary cell, decompose heat absorbent and include dividing in a heated condition Solve and generate at least one in the inorganic compound of water or organic compound.
As a kind of improvement of the application secondary cell, decompose the inorganic compound producing water selected from hydroxide At least one in thing, acid salt, basic salt, hydrate;
Preferably, at least one in ammonium oxalate, sodium bicarbonate of acid salt;
Preferably, at least one in basic copper carbonate, basic magnesium carbonate of basic salt;
Preferably, hydrate selected from four water manganese acetates, Aluminium chloride hexahydrate, copper sulphate pentahydrate, 12 At least one in water aluminium potassium sulfate, washing soda.
As a kind of improvement of the application secondary cell, decompose the organic compound producing water selected from containing extremely The compound of a few carboxyl, preferably comprises the alkyl of at least one carboxyl, such as, contains at least one The alkane of carboxyl, the alkene containing at least one carboxyl, benzene etc. containing at least one carboxyl, and excellent Select ethanedioic acid.
As a kind of improvement of the application secondary cell, decompose in heat absorbent and be additionally included under heating condition Decompose and do not generate at least one in the material of water, preferably carbamide.
As a kind of improvement of the application secondary cell, the endothermic temperature of safety block be 60~ 300 DEG C, and preferably 60~150 DEG C.I.e. the safety block in the application is at 60~300 DEG C Can absorb heat under temperature conditions, thus be applicable to hot abuse conditions in various degree.
As a kind of improvement of the application secondary cell, heat absorbent is solid powder preparation, liquid preparation Or gel preparation.The heat absorbent of the application is except containing inorganic compound or organic compound beyond the region of objective existence, also containing Having other to add, such as binding agent, solvent etc., those skilled in the art can be carried out according to specific needs Select.The heat absorbent of the application can prepare the multiple dosage forms such as solid-state, liquid or gel according to specific needs.
As a kind of improvement of the application secondary cell, safety block also includes for packing heat absorption The storing apparatus of agent, thus heat absorbent is fixed on inside storing apparatus.Storing apparatus can be selected for PE, The film preparation such as PP or aluminum plastic film forms.
As a kind of improvement of the application secondary cell, storing apparatus is for sealing or unsealed.
Concrete, heat absorbent by coating, bonding, inlay by the way of be fixed on the inside of storing apparatus;
Such as it is prepared as heat absorbent forming coating in slurry is coated on storing apparatus, or passes through porous After material absorption heat absorbent, the porous material being inlaid with heat absorbent is fixed in storing apparatus, or directly Connect and use glue to be bonded in storing apparatus heat absorbent;
When storing apparatus is for sealing structure, by the sky in decompression manner of packing, just packing container Gas is completely drawn out sealing, and is in height decompression state, thus is fixed by heat absorbent in maintaining bag.As incited somebody to action When the decomposition heat absorbent of generation water is positioned in the storing apparatus of sealing, under uniform temperature and pressure, Storing apparatus ruptures, and discharges water vapour.Sealing intensity can be by sealing the material of structure or sealing Intensity is adjusted, and for example with the packaging material (such as PE) that softening temperature is low, or arranges weak close Sealing strength site.
As a kind of improvement of the application secondary cell, safety block directly or indirectly with naked battery core Contact, for absorbing the heat of naked battery core release;Preferably safety guard is arranged on and naked battery core The position that the heat radiation of contact area battery core big, naked is most.
As a kind of improvement of the application secondary cell, when secondary cell is duricrust battery, secondary electricity Pond also includes dielectric film, and the position set by safety block is interior selected from naked battery core, at least two is naked Between battery core, between naked battery core and dielectric film, between dielectric film and housing;When secondary cell is Soft Roll During battery, the position set by safety block is in naked battery core, between naked battery core and housing.
According to above-mentioned position safety block, and when ambient temperature exceedes the temperature that pyrolysis component decomposes Time, generate water and absorb the substantial amounts of heat of inside battery, and causing other substance reactions to produce gas, Can open explosion-proof control in advance, explosion-proof valve just can discharge the internal gas overstock of secondary cell immediately after opening Body and heat, reduce internal pressure, thus avoid secondary cell and draw heat accumulation and cause heat Out of control.
Concrete, when safety component is arranged at naked battery core inside, may be disposed between two naked battery cores.
Divided by upper position, safety block can also be arranged at other positions in battery, specifically may be used Concrete condition according to secondary cell is designed.
The application further relates to a kind of secondary cell, including naked battery core and housing, contains in this secondary cell Safety block, containing decomposing heat absorbent in safety block, decomposition heat absorbent is hydroxide,
When secondary cell is duricrust battery, secondary cell also includes dielectric film, safety block institute The position arranged is between the naked battery core of at least two, between naked battery core and dielectric film, dielectric film and shell Between body;
When secondary cell is soft-package battery, the position set by safety block selected from naked battery core with Between housing;
Preferably, at least one in zinc hydroxide, magnesium hydroxide, Copper hydrate of hydroxide.
In this technical scheme, safety block structure etc. is arranged as hereinbefore.
In this technical scheme, in safety component outside dehydrogenation aluminium oxide, also can add binding agent, solvent, Other materials such as diluent.
The safety block of the application is applicable to the secondary cell of any model, such as duricrust lithium ion Battery or soft bag lithium ionic cell.
As a kind of improvement of the application secondary cell, described in the application secondary cell, heat absorbent is total Heat absorption enthalpy is more than 100J, and the upper limit of total heat absorption enthalpy is 2.0WJ.
As a kind of improvement of the application secondary cell, containing described heat absorbent in the application secondary cell 0.1g~200g, preferably 1~180g.If it is too small that heat absorbent arranges weight, heat-absorbing action is failed to understand Aobvious, as excessive in arranged weight, then can increase battery deadweight, occupy the volume in battery too much, reduce The energy density of battery.
Embodiment 1
Apply in electrokinetic cell field: square aluminum housing battery, battery capacity 100AH, running voltage model It is trapped among 2.8~4.2V.Top cover contains the safety measures such as explosion-proof valve.
Experimental example: heat absorbent is Zn (OH)2: 15g;Bonding with glue, it is positioned in PE packaging bag, It is placed between naked battery core.
Comparative example: be not provided with safety block.
Test condition: heat up with 2 DEG C/min, 80 DEG C of constant temperature 2h, 120 DEG C of constant temperature 2h, 150 DEG C of constant temperature 2h。
Test result:
In comparative example, when ambient temperature is raised to 120 DEG C of-150 DEG C of 30min, cause inside battery Electrolyte and active substance etc. react, and when 150 DEG C of about 30min, it is fast that the self-produced thermal conductance of battery causes temperature Speed rises, final induction cathode material and the decomposition of anode material, produces thermal runaway.
In experimental example, when ambient temperature be raised to 100 DEG C to 120 DEG C of 110min time, internal temperature of battery Reach Zn (OH)2Decomposition temperature, produce substantial amounts of water and absorb the heat of battery, the temperature of battery Declining rapidly, meanwhile, the water generated reacts with other compositions in lithium battery and decomposes generation Substantial amounts of gas, the explosion-proof valve of duricrust battery opens, and gas sprays, and takes a large amount of electrolyte and more out of Heat.Battery temperature declines rapidly, until test terminates, thermal runaway does not occurs.
Embodiment 2
Apply in electrokinetic cell field: square aluminum housing battery, battery capacity 28AH, running voltage model Being trapped among 2.8~4.2V, top cover contains the safety measures such as explosion-proof valve.
Experimental example: Mg (OH)2: 20g, after grinding with ball mill, stirs with binding agent, is coated in On PE film, it is placed between naked battery core and housing, and is assembled into battery.
Comparative example: be not provided with safety block.
Test condition: with embodiment 1.
Test result:
In comparative example, when ambient temperature is raised to 120 DEG C~150 DEG C of 30min, cause inside battery Electrolyte and the reaction such as active substance, when 150 DEG C of about 30min, the self-produced thermal conductance of battery causes temperature Rapid increase, final induction cathode material and the decomposition of anode material, battery catches fire.
In experimental example, when ambient temperature is raised to 150 DEG C of about 30min, the self-produced thermal conductance of battery causes temperature Rapidly increasing to 300 DEG C, negative and positive level and electrolyte react, electrolyte decomposition etc. produces substantial amounts of gas, Meanwhile, Mg (OH)2Decompose and produce substantial amounts of water, and then cause electrolyte etc. to decompose further Aerogenesis, explosion-proof valve is opened, and sprays a cloud of black smoke, the rapid drop in temperature of battery, until test terminates, There is not thermal runaway.
Embodiment 3~14
Applying in electrokinetic cell field: square aluminum housing battery, battery capacity is as shown in table 1, work Voltage range is 2.8~4.2V.
Shown in table 1, prepare safety block, use the testing conditions of embodiment 1 to detect, Testing result is as shown in table 2.
Table 1:
Table 2:
Embodiment 14
It is applied to the field of lithium of consumer electronics: soft-package battery, battery capacity 2Ah, running voltage Scope is 3.0~4.35V.
Comparative example: be not provided with safety block;
Experimental example: being embedded in nickel foam under sodium bicarbonate certain pressure, be positioned over open package bag In, then packaging bag is placed between naked battery core.
Hot abuse test method: be warming up to 150 DEG C with 2 DEG C/min.
Test result:
In comparative example, when ambient temperature is at 80~150 DEG C, cause electrolyte and the work of inside battery Property the reaction such as material, make temperature further up, final induction cathode material and the decomposition of anode material, Produce thermal runaway.
In experimental example, when ambient temperature is raised to more than 60 DEG C, the SEI of inside battery starts to decompose, Electrolyte and active substance etc. start reaction, and sodium bicarbonate starts to decompose generation water, and the temperature of battery is fast Speed declines, and meanwhile, the lithium hexafluoro phosphate in lithium battery and water are decomposed reaction, and then initiation The decomposition of other materials, produces substantial amounts of gas, the rapid spalling of pocket bag of soft-package battery, gas Ejection, takes a large amount of electrolyte and more heat out of.Battery temperature declines rapidly, until test terminates, There is not thermal runaway.
Result: compare comparative example, the secondary cell of experimental example decomposes generation water in suitable temperature, makes Battery temperature reduces, and inducing gas generates simultaneously, makes pocket bag spalling, passes through heat abuse and surveys Examination.
Embodiment 15~18
Applying in electrokinetic cell field: square aluminum housing battery, battery capacity is as shown in table 3, work Voltage range is 2.8~4.2V.
Shown in table 3, prepare safety block, use the testing conditions of embodiment 14 to examine Surveying, testing result is as shown in table 4.
Table 3:
Table 4:
The foregoing is only the preferred embodiment of the application, be not limited to the application, for For those skilled in the art, the application can have various modifications and variations.All essences in the application Within god and principle, any modification, equivalent substitution and improvement etc. made, should be included in the application Protection domain within.

Claims (10)

1. a secondary cell, including naked battery core and housing, it is characterised in that described secondary cell In containing safety block, containing decomposing heat absorbent, decalescence agent in described safety block In at least one, and described decomposition heat absorbent is not hydroxide.
Secondary cell the most according to claim 1, it is characterised in that described decomposition heat absorbent Including decomposing in a heated condition and generating inorganic compound or the organic compound of water and heating Under the conditions of decompose and do not generate the material of water, described decomposition and do not generate the preferred carbamide of material of water.
Secondary cell the most according to claim 2, it is characterised in that described inorganic compound At least one in hydroxide, acid salt, basic salt, hydrate;Described acid salt is preferred At least one in ammonium oxalate, sodium bicarbonate, the preferred basic copper carbonate of described basic salt, basic carbonate At least one in magnesium, described hydrate preferably four water manganese acetate, Aluminium chloride hexahydrate, five water sulphuric acid At least one in copper, Potassium aluminum sulfate dodecahydrate, washing soda;Described organic compound is selected from containing There are the compound of at least one carboxyl, preferably ethanedioic acid.
Secondary cell the most according to claim 1, it is characterised in that described safeguard protection portion Part directly or indirectly contacts with described naked battery core;
Preferably, when described secondary cell is duricrust battery, described secondary cell also includes dielectric film, Position set by described safety block is naked battery core in described naked battery core, described at least two Between, between described naked battery core and described dielectric film, between described dielectric film and described housing;
When described secondary cell is soft-package battery, the position set by described safety block is selected from In described naked battery core, between described naked battery core and described housing.
5. a secondary cell, including naked battery core, housing and dielectric film, it is characterised in that described Containing safety block in secondary cell, containing decomposing heat absorbent, institute in described safety block Stating decomposition heat absorbent is hydroxide;
When described secondary cell is duricrust battery, described secondary cell also includes dielectric film, described peace Position set by full guard parts is described at least two between naked battery core, described naked battery core and institute State between dielectric film, between described dielectric film and described housing;
When described secondary cell is soft-package battery, the position set by described safety block is selected from Between described naked battery core and described housing;
In the preferred zinc hydroxide of described hydroxide, magnesium hydroxide, aluminium hydroxide, Copper hydrate extremely Few one.
Secondary cell the most according to claim 1 or 5, it is characterised in that described safety is protected The endothermic temperature protecting parts is 60~300 DEG C.
Secondary cell the most according to claim 1 or 5, it is characterised in that described heat absorbent For solid powder preparation, liquid preparation or gel preparation.
Secondary cell the most according to claim 1 or 5, it is characterised in that described safety is protected Protecting parts and also include the storing apparatus for packing described heat absorbent, described heat absorbent is fixed on described appearance Receive the inside of device;Preferably, described storing apparatus is for sealing or unsealed.
Secondary cell the most according to claim 8, it is characterised in that described heat absorbent passes through Coating, the inside that bonding, mode that is that inlay is fixed on described storing apparatus;When described storing apparatus is When sealing structure, the described heat absorbent in described storing apparatus will be positioned over by the way of decompression is packed Fixing.
Secondary cell the most according to claim 1 or 5, it is characterised in that described secondary electricity Total heat absorption enthalpy of heat absorbent described in pond is more than 100J;Containing described heat absorbent in described secondary cell 0.1g~200g.
CN201610446863.0A 2016-06-20 2016-06-20 Secondary battery Pending CN106025401A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018148978A1 (en) * 2017-02-15 2018-08-23 先雪峰 Applications of additive, electrode paste, additive paste, positive electrode or negative electrode of lithium-ion battery and preparation method therefor, and lithium-ion battery
WO2018148979A1 (en) * 2017-02-15 2018-08-23 先雪峰 Composite active material for lithium-ion battery and preparation method therefor, electrode paste of lithium-ion battery, positive electrode or negative electrode of lithium-ion battery, and lithium-ion battery
CN109964358A (en) * 2016-11-30 2019-07-02 松下知识产权经营株式会社 Non-aqueous electrolyte secondary battery
CN112542626A (en) * 2019-09-20 2021-03-23 北京小米移动软件有限公司 Built-in battery of mobile terminal and preparation method

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109964358A (en) * 2016-11-30 2019-07-02 松下知识产权经营株式会社 Non-aqueous electrolyte secondary battery
WO2018148978A1 (en) * 2017-02-15 2018-08-23 先雪峰 Applications of additive, electrode paste, additive paste, positive electrode or negative electrode of lithium-ion battery and preparation method therefor, and lithium-ion battery
WO2018148979A1 (en) * 2017-02-15 2018-08-23 先雪峰 Composite active material for lithium-ion battery and preparation method therefor, electrode paste of lithium-ion battery, positive electrode or negative electrode of lithium-ion battery, and lithium-ion battery
CN112542626A (en) * 2019-09-20 2021-03-23 北京小米移动软件有限公司 Built-in battery of mobile terminal and preparation method

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