CN109818111A - A kind of battery system and electronic equipment - Google Patents
A kind of battery system and electronic equipment Download PDFInfo
- Publication number
- CN109818111A CN109818111A CN201910254406.5A CN201910254406A CN109818111A CN 109818111 A CN109818111 A CN 109818111A CN 201910254406 A CN201910254406 A CN 201910254406A CN 109818111 A CN109818111 A CN 109818111A
- Authority
- CN
- China
- Prior art keywords
- circuit
- connection status
- temperature
- resistance value
- under
- 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.)
- Granted
Links
- 230000005611 electricity Effects 0.000 claims description 10
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 238000000034 method Methods 0.000 description 15
- 238000010586 diagram Methods 0.000 description 13
- 230000008569 process Effects 0.000 description 8
- 239000002184 metal Substances 0.000 description 5
- 102100028680 Protein patched homolog 1 Human genes 0.000 description 4
- 101710161390 Protein patched homolog 1 Proteins 0.000 description 4
- 230000008859 change Effects 0.000 description 4
- 238000005452 bending Methods 0.000 description 2
- 101000974343 Homo sapiens Nuclear receptor coactivator 4 Proteins 0.000 description 1
- 102100022927 Nuclear receptor coactivator 4 Human genes 0.000 description 1
- 102100036894 Protein patched homolog 2 Human genes 0.000 description 1
- 101710161395 Protein patched homolog 2 Proteins 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Classifications
-
- 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
Landscapes
- Protection Of Static Devices (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
This application discloses a kind of battery system, including battery core and protection circuit, the battery core and protection circuit series connection, the battery core have the first resistance value, and the protection circuit has the second resistance value, and second resistance value increases as the temperature rises.The battery system protects the resistance value of circuit also constantly to increase while environment temperature constantly increases; to reduce the electric current by the protection circuit; namely the electric current by the battery core, the heat production of battery system is reduced, prevents temperature raising is too fast to be developed to thermal runaway；Since the resistance value of protection circuit is increased with variation of ambient temperature; rather than disposably it is intended to when temperature reaches certain particular value infinitely great and disconnects access; therefore the battery system has certain tolerance to environment temperature; internal current is gradually reduced while environment temperature constantly increases; under the premise of will not trigger open circuit protection easily, thermal runaway is effectively avoided the occurrence of.
Description
Technical field
This application involves battery management techniques, and more specifically, it relates to a kind of battery system and electronic equipments.
Background technique
Battery is widely used in various electronic products, and the management to battery is the problem of each manufacturer pays special attention to.
Summary of the invention
To achieve the above object, the application provides the following technical solutions:
A kind of battery system, including battery core, protection circuit；
The battery core and protection circuit series connection；
The battery core has the first resistance value；
The protection circuit has the second resistance value；
Second resistance value increases as the temperature rises.
Optionally, second resistance value of the protection circuit increases with the raising of temperature in staged, each ladder resistance
It is worth a corresponding temperature range, when temperature reaches preset value, second resistance value is intended to infinity, and the protection circuit is disconnected
Road.
Optionally, the protection circuit includes at least the first circuit and second circuit in parallel；
First circuit and/or the second circuit are the circuit for changing connection status with variation of ambient temperature；
First circuit is under the first connection status, and the first branch of first circuit is connected, first circuit
Second branch disconnects；
First circuit is under the second connection status, and the first branch of first circuit disconnects, the second branch
It connects, the second branch includes thermistor；
First connection status and second connection status automatically switch according to environment temperature, the second connection shape
The environment temperature of state is greater than the environment temperature of first connection status.
Optionally, the protection circuit includes input terminal and output end, and first circuit includes switch；
For first circuit under the first connection status, the both ends of the switch are separately connected the input terminal and described defeated
Outlet, the first end of the thermistor are free end, and second end connects the input terminal or output end.
Optionally, first circuit includes bimetal leaf；
Under its second connection status, the bimetal leaf is connected on described defeated first circuit with the thermistor
Enter between end and the output end.
Optionally, under its first connection status, the first branch of the second circuit is connected the second circuit, described
The second branch of second circuit disconnects；
Under its second connection status, the first branch of the second circuit disconnects the second circuit, second electricity
The second branch on road is connected, and the second branch of the second circuit includes thermistor；
First connection status of the second circuit and its second connection status automatically switch according to environment temperature, and described the
The environment temperature of second connection status of two circuits is greater than the environment temperature of one connection status.
Optionally, the second circuit includes bimetal release；
The second circuit is under its first connection status, the bimetal release closure；
Under its second connection status, the bimetal release disconnects the second circuit.
Optionally, the protection circuit includes input terminal and output end, then further include:
Tertiary circuit, the tertiary circuit are the circuit for changing connection status with variation of ambient temperature；
The first end of the tertiary circuit is free end, and second end connects the input terminal or the output end；
The second circuit is under its second connection status, the free end of the bimetal release and the tertiary circuit
It connects；
Under its first connection status, the first branch of the tertiary circuit is connected the tertiary circuit, the third electricity
The second branch on road disconnects；
Under its second connection status, the first branch of the tertiary circuit disconnects the tertiary circuit, the third electricity
The second branch on road is connected, and the second branch of the tertiary circuit includes thermistor；
First connection status of the tertiary circuit and its second connection status automatically switch according to environment temperature, and described the
The environment temperature of three circuit second connection status is greater than the environment temperature of its first connection status.
A kind of electronic equipment, the electronic equipment include any one of the above battery system.
Optionally, the electronic equipment is laptop, mobile phone or PAD.
It can be seen via above technical scheme that compared with prior art, the embodiment of the present application discloses a kind of battery system,
Including battery core and protection circuit, the battery core and protection circuit series connection, the battery core have the first resistance value, the protection electricity
Road has the second resistance value, and second resistance value increases as the temperature rises.The battery system constantly rises in environment temperature
While high, the resistance value of circuit is protected also constantly to increase, to reduce the electric current by the protection circuit, namely by described
The electric current of battery core reduces the heat production of battery system, prevents temperature raising is too fast to be developed to thermal runaway；Due to protecting the resistance value of circuit
It is to increase with variation of ambient temperature, rather than be disposably intended to when temperature reaches certain particular value infinitely great and disconnect access,
Therefore the battery system has certain tolerance to environment temperature, gradually reduces while environment temperature constantly increases interior
Portion's electric current effectively avoids the occurrence of thermal runaway under the premise of will not trigger open circuit protection easily.
Detailed description of the invention
In order to illustrate the technical solutions in the embodiments of the present application or in the prior art more clearly, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
The embodiment of application for those of ordinary skill in the art without creative efforts, can also basis
The attached drawing of offer obtains other attached drawings.
Fig. 1 is the structural schematic diagram of battery system disclosed in the embodiment of the present application；
Fig. 2 is TCO protection philosophy schematic diagram disclosed in the embodiment of the present application；
Fig. 3 is a kind of circuit structure diagram for protecting circuit disclosed in the embodiment of the present application；
Fig. 4 is the circuit structure diagram that another kind disclosed in the embodiment of the present application protects circuit；
Fig. 5 is the structural schematic diagram of another disclosed protection circuit of the embodiment of the present application；
Fig. 6 is protection circuit operation principle process schematic disclosed by the embodiments of the present invention；
Fig. 7 is resistance value corresponding with process shown in Fig. 6-temperature variation curve schematic diagram disclosed by the embodiments of the present invention.
Specific embodiment
Below in conjunction with the attached drawing in the embodiment of the present application, technical solutions in the embodiments of the present application carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of embodiments of the present application, instead of all the embodiments.It is based on
Embodiment in the application, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall in the protection scope of this application.
Fig. 1 is the structural schematic diagram of battery system disclosed in the embodiment of the present application, shown in Figure 1, the battery system
10 include battery core 20 and protection circuit 30.Wherein, the battery core 20 has the first resistance value R1, and the protection circuit 30 has second
Resistance value R2, second resistance value increase as the temperature rises.
Wherein, the first resistor R1 can be the D.C. resistance of the battery core 20.
The specific structure of the protection circuit 30 can be there are many way of realization, in the present embodiment, not to the protection
The structure of circuit 30 is specifically limited, it is only necessary to guarantee it is described protection circuit 30 the second resistance value R2 can with the raising of temperature and
Gradually become larger.In the following embodiments, it will the specific structure of the protection circuit 30 is illustratively introduced,
No longer excessive statement herein.
Specifically, it is described protection circuit 30 the second resistance value R2 increase with the raising of temperature, be similar to it is some
Some thermistors, when temperature is lower, can normal through electric current, and when temperature reaches some numerical value, resistance value uprush to
Infinity, so that the electric current of its access is reduced on foot close to 0.In the present embodiment, the second resistance value R2 of the protection circuit 30 will not
Sharply increase to infinity with the raising of temperature, but can substep be gradually increased, in this way, concatenated with the protection circuit 30
The electric current passed through in battery core 20 can also gradually reduce, rather than once just be reduced to 0.
Battery system described in the present embodiment protects the resistance value of circuit also constantly to increase while environment temperature constantly increases
Greatly, to gradually reduce the electric current by the protection circuit, namely by the electric current of the battery core, the production of battery system is reduced
Heat prevents temperature raising is too fast to be developed to thermal runaway；Due to protection circuit resistance value be increase with variation of ambient temperature, rather than
Disposably it is intended to when temperature reaches certain particular value infinitely great and disconnects access, therefore the battery system has environment temperature
There is certain tolerance, gradually reduce internal current while environment temperature constantly increases, breaking guarantor will not triggered easily
Under the premise of shield, thermal runaway is effectively avoided the occurrence of.
The second resistance R2 that the protection circuit 30 has been made referrals in above-described embodiment can increase with the raising of temperature
Greatly, specifically, its way of realization may include: raising of the second resistance value R2 for protecting circuit 30 with temperature in ladder
Formula increases, and the corresponding temperature range of each ladder resistance value, when temperature reaches preset value, second resistance value is intended to infinite
Greatly, the protection circuit breaker.
For example, the resistance value of the second resistance R2 of the protection circuit 30 is 5 ohm in 15-30 degrees Celsius of section,
In 30-40 degrees Celsius of section, the resistance value of the second resistance R2 of the protection circuit 30 is 15 ohm, in 40-50 degrees Celsius of section
Interior, the resistance value of the second resistance R2 of the protection circuit 30 is 80 ohm, in 50 degrees Celsius or more sections, the protection circuit 30
Second resistance R2 be intended to it is just infinite.Certainly, example presented here be intended merely to help understand the second resistance value R2 with
The process that the raising of temperature increases in staged, in practical applications, the numerical value in above-mentioned example does not have any directive significance.
It may include TCO (ThermalCut-Pff, thermal cut-out) protection structure in the protection circuit 30.TCO protection is former
Reason is the switching device based on bimetal leaf Bi-metal.Fig. 2 is TCO protection philosophy figure, as shown in connection with fig. 2, when temperature or
When electric current is lower, initial bending state is presented in bimetal leaf, and metal arm is connected to electricity as one small resistance (mohm rank)
Lu Zhong, PTC (Positive Temperature Coefficient, positive temperature coefficient, it will be appreciated that be thermistor) He Shuanjin
Category piece is open-circuit condition, is not connected in circuit；When temperature or electric current have reached certain value, due to two in bimetal leaf
Kind thermal expansion metal coefficient is different, and bimetal leaf can be reversed, flick metal arm, it is breaking to make metal arm, while bimetal leaf can connect
PTC is met, a circuit is formed, at this point, battery current is reduced to mA rank.When current temperature is reduced to certain value, bimetallic
Piece can be restored to initial bending state again.
Certainly, above-mentioned TCO protection structure is a schematical example, in practical applications, can also be used
Electric elements cooperate certain circuit design to realize technical purpose that the second resistance value R2 increases with the raising of temperature.This
In embodiment, second resistance value of the protection circuit increases with the raising of temperature in staged, so that leading in the battery core
The electric current crossed also stepped reduction under the premise of will not trigger open circuit protection easily, is effectively kept away to reduce system heat production
The occurrence of exempting from thermal runaway.
In a concrete implementation, the specific structure of the protection circuit 30 can be found in Fig. 3, and Fig. 3 is the application implementation
A kind of circuit structure diagram for protecting circuit disclosed in example, as shown in figure 3, the protection circuit 30 includes at least: in parallel first
Circuit 31 and second circuit 32.
Wherein, first circuit 31 and/or the second circuit 32 are to change connection status with variation of ambient temperature
Circuit.
First circuit under the first connection status, connect by the first branch of first circuit 31；
Under the second connection status, the first branch of first circuit 31 disconnects first circuit；
The second branch includes thermistor PTC1；
First connection status and second connection status automatically switch according to environment temperature, the second connection shape
The environment temperature of state is greater than the environment temperature of first connection status.
In the concrete realization, it can be individual first circuit 31 or the second circuit 32 can be with environment temperature
Variation changes connection status or first circuit 31 and the second circuit 32 and can change certainly with variation of ambient temperature
The connection status of body.It should be noted that if first circuit 31 and the second circuit 32 can become with environment temperature
Change the connection status for changing itself, first circuit 31 temperature value corresponding with the second circuit 32 change connection status is not
Together.
Specifically, the protection circuit 30 may include input terminal and output end, and first circuit 31 includes switch,
In, the switch can be bimetal release K1；
Under the first connection status, the both ends of the bimetal release K1 are separately connected described defeated first circuit 31
Enter end and the output end, the both ends of the thermistor PTC are separately connected the input terminal and the output end.
Under its second connection status, the bimetal release K1 is flicked first circuit 31, first circuit
The first branch disconnect.
In the present embodiment, first circuit 31 may include two branches, first electricity under the first connection status
The first branch on road is connected by bimetal release K1；Under the second connection status, the first branch of first circuit is disconnected
It opens；The second branch includes thermistor PTC1；The second circuit 32 includes bimetal release K2, the second circuit
32 under its first connection status, and the bimetal leaf K2 is closed the switch；The second circuit 32 under its second connection status,
The bimetal release K2 is disconnected.It should be noted that the bimetal release K2 can take sky after disconnecting, that is, it is not connected to
Any route also can connect other routes.
In conjunction with Fig. 3, when temperature is lower, the bimetal leaf K1 closure, first branch conducting (the first connection shape
State)；When temperature reaches certain particular value, the bimetal release K1 temperature distortion, springing to first circuit 31
The first branch disconnects.Since the second branch includes thermistor PTC1, the more high thermistor PTC1 resistance of temperature
Value is bigger, then the resistance value of first circuit 31 becomes larger；Since first circuit 31 and the second circuit 32 are in parallel, in institute
State in the case that 31 resistance value of the first circuit becomes larger, the whole resistance of the protection circuit 30 becomes larger, entirely through electric current become smaller,
To reduce system heat production.
In the present embodiment, the distortion temperature values of the bimetal release K2 can be greater than the bimetal release K1's
Distortion temperature values, in this way, the protection circuit 30 becomes smaller entirely through electric current after the resistance value of first circuit 31 becomes larger,
When temperature continues to rise to some numerical value, the bimetal release K2 also temperature distortion of the second circuit 32, flick to
The second circuit open circuit, and then the overall electrical resistance of the protection circuit becomes much larger, it is smaller entirely through electric current.
Fig. 4 is the circuit structure diagram that another kind disclosed in the embodiment of the present application protects circuit, shown in Figure 4, at other
Implementation in, the specific structure of the second circuit 32 can be identical as the structure of the first circuit 31 described in Fig. 3, by
This, under its first connection status, the first branch of the second circuit is connected the second circuit；The second circuit is at it
Under second connection status, the first branch of the second circuit is disconnected；The second branch of the second circuit includes thermistor
PTC2；First connection status of the second circuit and its second connection status automatically switch according to environment temperature, and described second
The environment temperature of second connection status of circuit is greater than the environment temperature of one connection status.
In the present embodiment, the bimetal release K1 in first circuit 31 with it is described in the second circuit
The temperature value of bimetal release K2 temperature distortion is different.For example, the temperature value of the bimetal release K2 temperature distortion is big
In the temperature value of the bimetal release K1 temperature distortion, in this way, when environment temperature rises to certain numerical value, first electricity
Bimetal release K1 temperature distortion in road 31 flicks, the first branch open circuit of first circuit 31；When environment temperature after
Continuous when being increased to another numerical value, the bimetal release K2 temperature distortion in the second circuit 32 flicks, second electricity
The first branch on road 32 is also breaking.
The resistance value of the protection circuit increases with temperature and the stepped state increased is substantially presented as a result, rather than one
Secondary property is infinity by low resistance variation, therefore the battery system has certain tolerance to environment temperature, in environment temperature
Degree gradually reduces internal current while constantly raising, under the premise of will not trigger open circuit protection easily, effectively avoids hot mistake
The occurrence of control.
Fig. 5 is the structural schematic diagram of another disclosed protection circuit of the embodiment of the present application, shown in Figure 5, in Fig. 3 institute
On the basis of showing protection circuit, the protection circuit includes input terminal and output end, further includes:
Tertiary circuit 33, the tertiary circuit 33 are the circuit for changing connection status with variation of ambient temperature；
The first end of the tertiary circuit 33 is free end, and second end connects the input terminal or the output end；
The second circuit 32 is under its second connection status, the bimetal release K2 and the tertiary circuit 33
Free end is connected；
Under its first connection status, the first branch of the tertiary circuit 33 is connected the tertiary circuit 33；
Under its second connection status, the first branch of the tertiary circuit 33 disconnects the tertiary circuit 33；
The second branch of the tertiary circuit 33 includes thermistor PTC3；
First connection status of the tertiary circuit 33 and its second connection status automatically switch according to environment temperature, described
The environment temperature of second connection status of tertiary circuit 33 is greater than the environment temperature of its first connection status.
The specific structure of the tertiary circuit 33 is identical as the specific structure of first circuit 31, the tertiary circuit 33
In the first branch include bimetal release K3.Although the specific structure of the tertiary circuit 33 and first circuit 31
Specific structure is identical, but it is not equivalent that the two acts on played in the protection circuit 30.
Fig. 6 is protection circuit operation principle process schematic disclosed by the embodiments of the present invention, and wherein A figure is reset condition
Figure is identical as Fig. 5；Fig. 7 is resistance value corresponding with process shown in Fig. 6 disclosed by the embodiments of the present invention-temperature variation curve signal
Figure；Assuming that the temperature value of the bimetal release K1 temperature distortion is greater than the temperature of the bimetal release K3 temperature distortion
Value, the temperature value of the bimetal release K3 temperature distortion are greater than the temperature value of the bimetal release K2 temperature distortion,
That is K1 > K3 > K2, it is assumed that the resistance value of the K1 is Rk1, the resistance value of the K2 is Rk2, the resistance value of the K3 is Rk3, in conjunction with Fig. 6
With Fig. 7, A schemes under shown connection status in Fig. 6, the resistance value R2=R of the protection circuit 30k1*Rk2/(Rk1+Rk2), described
In 10 course of work of battery system, temperature is slowly increased, and the bimetal release K2 in the second circuit 32 becomes first
Shape flicks, and connects the upper tertiary circuit 33 (the B figure in corresponding diagram 6), in this way, the second circuit 32 disconnects, described the
Three-circuit is connected by the bimetal release K2, the whole resistance value of the protection circuit 30 namely the second resistance R2
=Rk1*(Rk2+Rk3)/(Rk1+Rk2+Rk3), the R2 becomes larger, and the protection circuit 30 becomes smaller entirely through electric current；Environment temperature
Degree continues to increase, and the bimetal release K3 deformation in the tertiary circuit 33 flicks, and the first of the tertiary circuit 33
Branch disconnects (the C figure in corresponding diagram 6), the whole resistance value R2=R of the protection circuit 30k1, so that the R2 is further enlarged,
The protection circuit 30 further becomes smaller entirely through electric current；Environment temperature continues to increase, the institute in first circuit 31
It states bimetal release K1 temperature distortion and flicks (the D figure in corresponding diagram 6), the whole resistance value of the protection circuit 30 becomes more
Greatly, it is intended to just infinite, the overall current of the protection circuit 30 becomes smaller until for 0, and the protection circuit is thoroughly breaking.
The resistance value of the protection circuit increases with temperature and stepped enlarging state is presented as a result, rather than disposably by
Low resistance variation is infinity, therefore the battery system has certain tolerance to environment temperature, continuous in environment temperature
Internal current is gradually reduced while raising, under the premise of will not trigger open circuit protection easily, effectively avoids thermal runaway situation
Generation.
It should be noted that the various structures for the protection circuit opened in above-described embodiment, only include most basic circuit elements
In concrete application, other circuit elements, such as resistance can be added in part in circuit according to actual needs, it is only necessary to guarantee not shadow
Ring the normal implementation of technical thought disclosed in the present application.
In addition, the structure for each protection circuit introduced in above-described embodiment is its different realization in different application
Mode is not limited to the specific structure of the protection circuit.According to actual needs, corresponding set can be carried out to its specific structure
Meter.To the improvement project and deformation scheme for protecting circuit to be done under the premise of not departing from invention thinking disclosed in the present application, all
It should belong within the application protection scope.
Further, disclosed herein as well is a kind of electronic equipment, the electronic equipment includes disclosing in above-described embodiment
Any one battery system.The battery system of the electronic equipment includes at least battery core and protection circuit；
Wherein, the battery core and protection circuit series connection；
The battery core has the first resistance value；
The protection circuit has the second resistance value；
Second resistance value increases as the temperature rises.
While environment temperature constantly increases, the resistance value of protection circuit therein also constantly increases the electronic equipment,
To reduce the electric current by the protection circuit, namely by the electric current of the battery core, the heat production of battery system is reduced, is prevented
Temperature raising is too fast to be developed to thermal runaway；Since the resistance value of protection circuit is increased with variation of ambient temperature, rather than in temperature
Disposably it is intended to infinitely great when reaching certain particular value and disconnects access, therefore the battery system has centainly environment temperature
Tolerance, internal current is gradually reduced while environment temperature constantly increases, before it will not trigger open circuit protection easily
Put, effectively avoid the occurrence of thermal runaway, guarantee electronic equipment using safe.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with other
The difference of embodiment, the same or similar parts in each embodiment may refer to each other.For device disclosed in embodiment
For, since it is corresponded to the methods disclosed in the examples, so being described relatively simple, related place is said referring to method part
It is bright.
It should also be noted that, herein, relational terms such as first and second and the like are used merely to one
Entity or operation are distinguished with another entity or operation, without necessarily requiring or implying between these entities or operation
There are any actual relationship or orders.Moreover, the terms "include", "comprise" or its any other variant are intended to contain
Lid non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those
Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment
Intrinsic element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that
There is also other identical elements in process, method, article or equipment including the element.
The foregoing description of the disclosed embodiments makes professional and technical personnel in the field can be realized or use the application.
Various modifications to these embodiments will be readily apparent to those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the application.Therefore, the application
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest scope of cause.
Claims (10)
1. a kind of battery system, including battery core, protection circuit；
The battery core and protection circuit series connection；
The battery core has the first resistance value；
The protection circuit has the second resistance value；
Second resistance value increases as the temperature rises.
2. battery system according to claim 1, wherein it is described protection circuit second resistance value be in the raising of temperature
Staged enlarging state, the corresponding temperature range of each ladder resistance value, when temperature reaches preset value, second resistance value becomes
To in infinity, the protection circuit breaker.
3. battery system according to claim 1, the protection circuit includes at least the first circuit and second circuit in parallel；
First circuit and/or the second circuit are the circuit for changing connection status with variation of ambient temperature；
First circuit under the first connection status, connect by the first branch of first circuit；
Under the second connection status, the first branch of first circuit disconnects first circuit；
The second branch includes thermistor；
First connection status and second connection status automatically switch according to environment temperature, second connection status
Environment temperature is greater than the environment temperature of first connection status.
4. battery system according to claim 3, the protection circuit includes input terminal and output end, first circuit
Including switch；
For first circuit under the first connection status, the both ends of the switch are separately connected the input terminal and the output
End, the both ends of the thermistor are separately connected the input terminal and the output end.
5. battery system according to claim 4, wherein the switch is bimetal release；
Under its second connection status, the bimetal release flicks first circuit, and first of first circuit
Road disconnects.
6. battery system according to claim 3, the second circuit is under its first connection status, the second circuit
The first branch connect；
Under its second connection status, the first branch of the second circuit disconnects the second circuit；
The second branch of the second circuit includes thermistor；
First connection status of the second circuit and its second connection status automatically switch according to environment temperature, second electricity
The environment temperature of second connection status on road is greater than the environment temperature of one connection status.
7. the second circuit includes bimetal release according to battery system described in right 3；
The second circuit is under its first connection status, the bimetal release closure；
Under its second connection status, the bimetal release disconnects the second circuit.
8. battery system according to claim 7, the protection circuit includes input terminal and output end, then further include:
Tertiary circuit, the tertiary circuit are the circuit for changing connection status with variation of ambient temperature；
The first end of the tertiary circuit is free end, and second end connects the input terminal or the output end；
Under its second connection status, the bimetal release freely terminates the second circuit with the tertiary circuit
It is logical；
Under its first connection status, the first branch of the tertiary circuit is connected the tertiary circuit；
Under its second connection status, the first branch of the tertiary circuit disconnects the tertiary circuit；
The second branch of the tertiary circuit includes thermistor；
First connection status of the tertiary circuit and its second connection status automatically switch according to environment temperature, the third electricity
The environment temperature of second connection status on road is greater than the environment temperature of its first connection status.
9. a kind of electronic equipment, the electronic equipment includes the described in any item battery systems of claim 1-7.
10. electronic equipment according to claim 9, the electronic equipment is laptop, mobile phone or PAD.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910254406.5A CN109818111B (en) | 2019-03-31 | 2019-03-31 | Battery system and electronic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910254406.5A CN109818111B (en) | 2019-03-31 | 2019-03-31 | Battery system and electronic equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109818111A true CN109818111A (en) | 2019-05-28 |
| CN109818111B CN109818111B (en) | 2022-07-26 |
Family
ID=66611068
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910254406.5A Active CN109818111B (en) | 2019-03-31 | 2019-03-31 | Battery system and electronic equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109818111B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115084793A (en) * | 2021-03-11 | 2022-09-20 | 宁德新能源科技有限公司 | Protection circuit, battery, group battery and electron device of electric core |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2638232Y (en) * | 2003-06-03 | 2004-09-01 | 上海科特高分子材料有限公司 | Self-restoring over-current protective combined device |
| CN201112465Y (en) * | 2007-10-10 | 2008-09-10 | 陈振富 | Lead-acid accumulator with temperature and voltage protection |
| CN102646547A (en) * | 2012-04-23 | 2012-08-22 | 东莞市晶品电子科技有限公司 | Protector for lithium ion battery |
| CN103380555A (en) * | 2010-12-16 | 2013-10-30 | 泰科电子日本合同会社 | Protective device |
| CN203951175U (en) * | 2014-06-03 | 2014-11-19 | 福建万众百源实业有限公司 | A kind of based on PTC protective circuit on lithium battery protection board |
| US20170256825A1 (en) * | 2016-03-01 | 2017-09-07 | Industrial Technology Research Institute | Battery management system and battery system using the same |
-
2019
- 2019-03-31 CN CN201910254406.5A patent/CN109818111B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2638232Y (en) * | 2003-06-03 | 2004-09-01 | 上海科特高分子材料有限公司 | Self-restoring over-current protective combined device |
| CN201112465Y (en) * | 2007-10-10 | 2008-09-10 | 陈振富 | Lead-acid accumulator with temperature and voltage protection |
| CN103380555A (en) * | 2010-12-16 | 2013-10-30 | 泰科电子日本合同会社 | Protective device |
| CN102646547A (en) * | 2012-04-23 | 2012-08-22 | 东莞市晶品电子科技有限公司 | Protector for lithium ion battery |
| CN203951175U (en) * | 2014-06-03 | 2014-11-19 | 福建万众百源实业有限公司 | A kind of based on PTC protective circuit on lithium battery protection board |
| US20170256825A1 (en) * | 2016-03-01 | 2017-09-07 | Industrial Technology Research Institute | Battery management system and battery system using the same |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115084793A (en) * | 2021-03-11 | 2022-09-20 | 宁德新能源科技有限公司 | Protection circuit, battery, group battery and electron device of electric core |
| US12418186B2 (en) | 2021-03-11 | 2025-09-16 | Ningde Amperex Technology Limited | Cell protection circuit, battery, and electronic device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109818111B (en) | 2022-07-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109818111A (en) | A kind of battery system and electronic equipment | |
| CN113410868A (en) | Independent multi-bus alternating-current type micro-grid control system | |
| CZ19539U1 (en) | Protective bonding circuit for voltage measurement transformers | |
| CN212012175U (en) | Load power supply circuit | |
| CN109411838A (en) | A kind of safety battery with self-recovery fuse overload current overheating protection | |
| CN102646547B (en) | Protector for lithium ion battery | |
| CN209642317U (en) | A kind of pcb board load formula surge protector | |
| KR101501944B1 (en) | Module of circuit-breaker sensing abnormal temperature of the battery | |
| CN214043263U (en) | A resistor with high temperature protection | |
| CN2483875Y (en) | Protector for electric appliance circuit | |
| CN211629855U (en) | A fuse type security unit | |
| CN203165986U (en) | Short-circuit protection device of battery and battery component | |
| CN203166457U (en) | A control circuit for realizing intelligent regulation | |
| CN209607819U (en) | A kind of battery and electric appliance | |
| CN202549721U (en) | Lithium ion battery protector | |
| CN216957616U (en) | Novel PPTC (polymeric positive temperature coefficient) self-recovery fuse | |
| CN219918415U (en) | Surge protector | |
| CN221862428U (en) | Backup integrated protection surge protector | |
| CN211980542U (en) | Overload protector | |
| CN219918413U (en) | Self-adjusting fuse and surge protector | |
| WO2008127028A1 (en) | Apparatus for blocking overheat by using shape memory alloy | |
| CN222052605U (en) | Battery pack temperature protection circuit, battery pack temperature protection device and electrical appliance | |
| CN222355961U (en) | Backup protection surge protector | |
| CN208923819U (en) | A kind of the protection component and Switching Power Supply of Switching Power Supply | |
| CN219086075U (en) | Self-heating control system and electronic equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |