CN208674278U - A kind of lithium ion battery with Heating guard function - Google Patents
A kind of lithium ion battery with Heating guard function Download PDFInfo
- Publication number
- CN208674278U CN208674278U CN201820071593.4U CN201820071593U CN208674278U CN 208674278 U CN208674278 U CN 208674278U CN 201820071593 U CN201820071593 U CN 201820071593U CN 208674278 U CN208674278 U CN 208674278U
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- shell
- lithium ion
- battery
- ion battery
- protective layer
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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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- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Abstract
The utility model provides a kind of lithium ion battery with Heating guard function, belongs to technical field of lithium ion.The problem of it solves lithium ion battery in no external heating system, can not work normally at low ambient temperatures.There is the lithium ion battery of Heating guard function to include shell and be arranged in the intracorporal protective layer of shell and battery core for this, protective layer is connected with shell, positive terminal and the first negative terminal are connected in battery core, adding thermal resistance is provided in protective layer, the second negative terminal is additionally provided on Casing top, one end of the second negative terminal is located in shell, and the other end is located at outside shell, one end of adding thermal resistance is electrically connected by conducting wire with positive terminal, and the other end is electrically connected by conducting wire with the second negative terminal.This lithium ion battery can carry out self-heating to battery in no external power supply at low ambient temperatures, make battery work under preference temperature, reduce the generation of Li dendrite, and also can be reduced needle thorn, vibration and shell and corrode the harm generated to lithium ion battery.
Description
Technical field
The utility model belongs to technical field of lithium ion, is related to a kind of lithium-ion electric with Heating guard function
Pond.
Background technique
With petering out for traditional energy, develops new energy and have become the urgent demand of human society.Lithium ion
Battery energy density is high, has extended cycle life, clean and environmental protection, is a kind of excellent energy storage device without memory effect, and at present
The main study subject of new energy.
Currently, there is some an open questions for lithium ion battery.As at low ambient temperatures, lithium ion battery is in cathode
It is upper to be easy analysis lithium, Li dendrite is generated, when lithium dendrite growth to certain size and shape, diaphragm can be pierced through, cause inside battery
Short circuit generates the burning even danger of explosion.Furthermore at low ambient temperatures, the capacity of lithium ion battery is low, and high rate performance is poor, electricity
The service life in pond is low.
In addition, being also required to the danger for preventing from may cause under unexpected environment using lithium ion battery.Such as when battery is by metal
The case where when needle thorn pierces through, positive and negative anodes pole piece is easy to be connected directly, and causes short circuit, forms combustion explosion；Or work as battery
When shaking, compression shock, especially battery core can be formed to inside battery, be easy to cause damage；Sometimes aluminum hull can also occur
The phenomenon that corrosion, be easy to cause leakage and security risk.
In view of the above problems, existing patent document disclose a kind of battery protection layer [application number:
CN201510462108.7], the protective layer is arranged in battery or battery outer package surface, the protective layer and battery or battery
Outer package surface fits closely together to cell sealing, and the protective layer is hard layer or soft layer, the protective layer setting
There is temperature-adjusting device.The protective layer is internally provided with several temperature adjustment channels, and the temperature adjustment channel is provided with inlet and outlet,
The temperature-adjusting device is made of the temperature adjustment channel.The battery protection layer is provided with temperature-adjusting device, although can rise
To the effect of the operating temperature of regulating cell, but the temperature-adjusting device must the additional temperature control medium that can be circulated and to it
Regulating cell temperature can just be played the role of by being heated, and in no external heating system, lithium ion battery is in low temperature environment
Under will be unable to work normally the problem of.
Summary of the invention
The purpose of this utility model is the presence of the above problem in view of the prior art, is proposed a kind of with Heating guard function
Can lithium ion battery, lithium ion battery technical problem to be solved are as follows: how in no external heating system, lithium from
Sub- battery can also work normally at low ambient temperatures.
The purpose of this utility model can be realized by the following technical scheme: a kind of lithium ion with Heating guard function
Battery, including shell and setting, in the intracorporal protective layer of shell and battery core, the protective layer is connected with shell, connects in the battery core
It is connected to positive terminal and the first negative terminal, adding thermal resistance is provided in the protective layer, is additionally provided with second on the Casing top
One end of negative terminal, second negative terminal is located in shell, and the other end is located at outside shell, and one end of the adding thermal resistance passes through
Conducting wire is electrically connected with positive terminal, and the other end is electrically connected by conducting wire with the second negative terminal.
This has the working principle of the lithium ion battery of Heating guard function are as follows: when battery is under low temperature environment, if
Have external power supply, then the positive and negative anodes of external power supply be connected with the positive terminal of battery with the second negative terminal respectively, adding thermal resistance with
Positive terminal and the heating line of the second negative terminal connection are connected, and adding thermal resistance generates heat and added by protective layer to battery
Heat；If the first negative terminal of battery is connected with the second negative terminal without external power supply, adding thermal resistance and positive terminal and second are negative
Pole connection heating line connect, adding thermal resistance generate heat simultaneously battery is heated by protective layer, realize no matter
Lithium ion battery is in no external heating system, the purpose that can work normally at low ambient temperatures.
In the above-mentioned lithium ion battery with Heating guard function, the protective layer is arranged in the bottom and side of shell
Wall.Protective layer is arranged so the effect that can play damping, while can also reduce corrosion of the electrolyte to shell.
In the above-mentioned lithium ion battery with Heating guard function, the protective layer is bonded in by way of stickup
In shell.By way of stickup protective layer and shell can fit closely together, in protective layer region, electrolyte
It is not contacted directly with shell, reduces the contact area of shell and electrolyte, slow down corrosion of the electrolyte to shell.
In the above-mentioned lithium ion battery with Heating guard function, the protective layer is made of heat-conducting silica gel sheet.It leads
Hot silica gel piece has high thermal conductivity, can heat the heat that adding thermal resistance generates to battery core by heat-conducting silica gel sheet；When
Battery is working normally generation heat, when needing to radiate, due to the excellent heating conduction of heat-conducting silica gel sheet, the heat of inside battery
Amount can also be shed by heat-conducting silica gel sheet, not will cause heat build-up.Heat-conducting silica gel sheet has good insulating properties, works as battery
When being needled, the syringe needle for piercing protective layer can play insulation effect with heat-conducting silica gel sheet, reduce short-circuit feelings when battery needle thorn
Condition reduces harm.
In the above-mentioned lithium ion battery with Heating guard function, the adding thermal resistance uses film resistor.Film
Resistance has thickness small, the big advantage of heated perimeter.
In the above-mentioned lithium ion battery with Heating guard function, the quantity of the adding thermal resistance is at least two.
Quantity, area, internal resistance and the power of adding thermal resistance can be configured according to demand, it is ensured that can be heated to the normal work of battery
Make temperature.The region existing for adding thermal resistance, when needle thorn occurs, syringe needle further encounters resistance brought by rigid adding thermal resistance
Power can slow down needle degree of lunging, and improve the safety of battery.
In the above-mentioned lithium ion battery with Heating guard function, first negative terminal and the second negative terminal and shell
The junction of body is provided with insulation sleeve.
Preferably, in the above-mentioned lithium ion battery with Heating guard function, the positive terminal and shell
Junction be also equipped with insulation sleeve.
The use of insulation sleeve can make to play insulation between positive terminal, the first negative terminal and the second negative terminal and shell
Effect improves the stability and safety of battery work.
Compared with prior art, there is the lithium ion battery of Heating guard function to have the advantage that for this
1, the utility model can using inside battery heating by the way of, by the adding thermal resistance in protective layer to battery core into
Row heating, heat directly pass through protective layer and are transferred to inside battery core, and heating efficiency is high, in the low temperature item of no external heating system
Under part, it is ensured that battery is rapidly achieved suitable use temperature, the generation and danger of Li dendrite caused by reducing because of low temperature environment
Evil guarantees normal battery operation.And battery structure is simple, low in cost.
2. the protective layer of the utility model can also slow down the corrosion of shell, increase battery security.
3, the protective layer of the utility model is made of heat-conducting silica gel sheet, can play the effect of damping, is shaken very in battery
To protection battery when dropping, can be played the role of, extend the service life of battery.
4, the protective layer of the utility model also can effectively prevent the harm that needle thorn causes, and increase battery security.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model.
In figure, 1, shell；2, positive terminal；3, the first negative terminal；4, the second negative terminal；5, protective layer；6, adding thermal resistance；7,
Battery core；8, insulation sleeve；9, conducting wire.
Specific embodiment
It is specific embodiment of the utility model and in conjunction with attached drawing below, the technical solution of the utility model is made further
Description, but the utility model is not limited to these examples.
As shown in Figure 1, there is the lithium ion battery of Heating guard function to include shell 1 and be arranged in shell 1 for this
Protective layer 5 and battery core 7, protective layer 5 are connected with shell 1, are connected with positive terminal 2 and the first negative terminal 3 in battery core 7, in protective layer 5
It is provided with adding thermal resistance 6, the second negative terminal 4 is additionally provided on 1 top cover of shell, one end of the second negative terminal 4 is located in shell 1,
The other end is located at outside shell 1, and one end of adding thermal resistance 6 is electrically connected by conducting wire 9 with positive terminal 2, and the other end passes through conducting wire 9 and the
The electrical connection of two negative terminals 4.
Wherein, protective layer 5 is arranged in the bottom and side wall of shell 1.Protective layer 5 is arranged so the effect that can play damping
Fruit, while corrosion of the electrolyte to shell 1 can also be reduced.
Preferably, protective layer 5 is bonded in shell 1 by way of stickup.It can be made by way of stickup
Protective layer 5 and shell 1 fit closely together, and in 5 region of protective layer, electrolyte does not contact directly with shell 1, reduce shell
The whole contact area with electrolyte of body 1, slows down corrosion of the electrolyte to shell 1.
Preferably, protective layer 5 is made of heat-conducting silica gel sheet.Heat-conducting silica gel sheet has high thermal conductivity, can will add
The heat that thermal resistance 6 generates heats battery core 7 by heat-conducting silica gel sheet；When battery work normally generate heat, need
When heat dissipation, due to the excellent heating conduction of heat-conducting silica gel sheet, the heat of inside battery can also be shed by heat-conducting silica gel sheet,
It not will cause heat build-up.
Preferably, adding thermal resistance 6 uses film resistor.It is excellent that film resistor has that thickness is small, heated perimeter is big
Point.
Preferably, the quantity of adding thermal resistance 6 is at least two.The quantity of adding thermal resistance 6 can according to demand into
Row setting, it is ensured that the operating temperature of battery can be adjusted.
Preferably, the junction of the first negative terminal 3 and the second negative terminal 4 and shell 1 is provided with insulation sleeve 8.
Preferably, the junction of positive terminal 2 and shell 1 is provided with insulation sleeve 8.The use of insulation sleeve 8 can make
Play the role of insulation between positive terminal 2, the first negative terminal 3 and the second negative terminal 4 and shell 1, improves the stabilization of battery work
Property and safety.
Preferably, the quantity of protective layer 5 can be set to multilayer, when two layers of protective layer 5 is such as set, adding thermal resistance
6 are arranged between two layers of protective layer 5, when 6 quantity of adding thermal resistance is multiple, are evenly spaced between two layers of protective layer 5, Duo Gejia
Thermal resistance 6, which passes through, to be connected in series or in parallel, and rear one end is connected in series or in parallel and is connect by conducting wire with the second negative terminal 4, another
End is connect with positive terminal 2.The resistance value and quantity of adding thermal resistance 6 can be selected according to demand.
This has the working principle of the lithium ion battery of Heating guard function are as follows: adding thermal resistance 6 is arranged in heat-conducting silica gel sheet
In, when battery is under low temperature environment, if there is external power supply, by the positive and negative anodes of external power supply respectively with the positive terminal of battery
2 are connected with the second negative terminal 4, and the heating line that adding thermal resistance 6 is connect with positive terminal 2 and the second negative terminal 4 is connected, adding thermal resistance
6 generation heats simultaneously heat battery by protective layer 5；If without external heating system, i.e., without external power supply when, then will be electric
First negative terminal 3 in pond is connected with the second negative terminal 4, the heater wire that adding thermal resistance 6 is connect with positive terminal 2 and the second negative terminal 4
Road is connected, and adding thermal resistance 6 generates heat and heated by protective layer 5 to battery, realizes no matter lithium ion battery is not having
When having external heating system, the problem of capable of also working normally at low ambient temperatures, adaptability is high, easy to use；In addition battery is adopted
It is heated with inside, high-efficient, structure is simple, at low cost.
When needle thorn occurs for battery, due to the presence of protective layer 5, when needle lunges inside battery, protective layer 5 can be encountered first
Obstruction.Insulation effect can be played with the heat-conducting silica gel sheet of insulation by piercing on the syringe needle of protective layer 5, when reducing battery needle thorn
Short-circuit conditions, harm reduction.And the region existing for adding thermal resistance 6, syringe needle further encounter rigid adding thermal resistance 6 and are brought
Resistance, needle degree of lunging can be slowed down, improve the safety of battery.
When battery shakes, the protective layer 5 formed using heat-conducting silica gel sheet can buffer a part vibration bring
Pressure plays the effect of damping.In addition, protective layer 5 is arranged on battery case 1, and the region where protective layer 5, electrolyte
It is not contacted directly with shell 1, reduces the whole contact area with electrolyte of shell 1, slow down corrosion of the electrolyte to shell 1.
The specific embodiments described herein are merely examples of the spirit of the present invention.The utility model institute
Belonging to those skilled in the art can make various modifications or additions to the described embodiments or using similar
Mode substitute, but without departing from the spirit of the present application or beyond the scope of the appended claims.
Claims (8)
1. a kind of lithium ion battery with Heating guard function, including shell (1) and the protective layer being arranged in shell (1)
(5) it is connected with battery core (7), the protective layer (5) with shell (1), positive terminal (2) and first negative is connected on the battery core (7)
Pole (3), which is characterized in that be provided with adding thermal resistance (6) in the protective layer (5), be additionally provided on shell (1) top cover
Second negative terminal (4), one end of second negative terminal (4) are located in shell (1), and the other end is located at shell (1) outside, described to add
One end of thermal resistance (6) is electrically connected by conducting wire (9) with positive terminal (2), and the other end passes through conducting wire (9) and the second negative terminal (4)
Electrical connection.
2. the lithium ion battery according to claim 1 with Heating guard function, which is characterized in that the protective layer
(5) it is arranged in the bottom and side wall of shell (1).
3. the lithium ion battery according to claim 1 or 2 with Heating guard function, which is characterized in that the protection
Layer (5) is bonded in shell (1) by way of stickup.
4. the lithium ion battery according to claim 1 or 2 with Heating guard function, which is characterized in that the protection
Layer (5) is made of heat-conducting silica gel sheet.
5. the lithium ion battery according to claim 1 or 2 with Heating guard function, which is characterized in that the heating
Resistance (6) uses film resistor.
6. the lithium ion battery according to claim 1 or 2 with Heating guard function, which is characterized in that the heating
The quantity of resistance (6) is at least two.
7. the lithium ion battery according to claim 1 or 2 with Heating guard function, which is characterized in that described first
The junction of negative terminal (3) and the second negative terminal (4) and shell (1) is provided with insulation sleeve (8).
8. the lithium ion battery according to claim 7 with Heating guard function, which is characterized in that the positive terminal
(2) junction of shell (1) is provided with insulation sleeve (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820071593.4U CN208674278U (en) | 2018-01-16 | 2018-01-16 | A kind of lithium ion battery with Heating guard function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820071593.4U CN208674278U (en) | 2018-01-16 | 2018-01-16 | A kind of lithium ion battery with Heating guard function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208674278U true CN208674278U (en) | 2019-03-29 |
Family
ID=65819885
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820071593.4U Expired - Fee Related CN208674278U (en) | 2018-01-16 | 2018-01-16 | A kind of lithium ion battery with Heating guard function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208674278U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110311064A (en) * | 2019-06-19 | 2019-10-08 | 华富(江苏)锂电新技术有限公司 | A kind of lithium ion battery cylindrical shell and preparation method thereof with heating function |
| CN112086286A (en) * | 2020-09-18 | 2020-12-15 | 山西图门新能源有限公司 | Low-temperature automobile starting power supply |
| CN112825358A (en) * | 2019-11-21 | 2021-05-21 | 中国电子科技集团公司第十八研究所 | Pre-starting system of high-power lithium primary battery in low-temperature environment |
-
2018
- 2018-01-16 CN CN201820071593.4U patent/CN208674278U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110311064A (en) * | 2019-06-19 | 2019-10-08 | 华富(江苏)锂电新技术有限公司 | A kind of lithium ion battery cylindrical shell and preparation method thereof with heating function |
| CN112825358A (en) * | 2019-11-21 | 2021-05-21 | 中国电子科技集团公司第十八研究所 | Pre-starting system of high-power lithium primary battery in low-temperature environment |
| CN112086286A (en) * | 2020-09-18 | 2020-12-15 | 山西图门新能源有限公司 | Low-temperature automobile starting power supply |
| CN112086286B (en) * | 2020-09-18 | 2021-11-05 | 山西图门新能源有限公司 | Low-temperature automobile starting power supply |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190329 Termination date: 20210116 |
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| CF01 | Termination of patent right due to non-payment of annual fee |