CN203135413U - Lithium battery secondary protection fusing circuit - Google Patents
Lithium battery secondary protection fusing circuit Download PDFInfo
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- CN203135413U CN203135413U CN 201320011136 CN201320011136U CN203135413U CN 203135413 U CN203135413 U CN 203135413U CN 201320011136 CN201320011136 CN 201320011136 CN 201320011136 U CN201320011136 U CN 201320011136U CN 203135413 U CN203135413 U CN 203135413U
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Abstract
The utility model discloses a lithium battery secondary protection fusing circuit comprising a first fusing module, a second fusing module, a start module and a control module; the control module is connected with the start module and is used for sending electric signals to the start module so as to start or close secondary protection; and the start module is respectively connected with the first fusing module and the second fusing module so as to start battery fusing protection by the first and the second fusing modules. The lithium battery secondary protection fusing circuit can realize secondary protection with low cost, high reliability and fast fusion, and can improve safety of a battery pack.
Description
Technical field
The utility model belongs to technical field of lithium batteries, relates to a kind of Zapping circuit, relates in particular to a kind of lithium battery second class protection Zapping circuit.
Background technology
Lithium battery (Lithium battery) refers to contain in the electrochemical system lithium battery of (comprising lithium metal, lithium alloy and lithium ion, lighium polymer).Lithium battery is broadly divided into two classes: lithium metal battery and lithium ion battery.Lithium metal battery is normally non-rechargeabel, and includes the lithium of metallic state.Lithium ion battery does not contain the lithium of metallic state, and can charge.
Existing lithium battery protection circuit reliability is not high, and protective circuit is damaged easily, easily causes lithium battery seriously to overcharge, and then the blast of power brick catching fire.
In view of this, nowadays pressing for provides a kind of new protective circuit, and disposable protectiveness fusing is irrecoverable, the fail safe that improves power brick.
The utility model content
Technical problem to be solved in the utility model is: provide a kind of lithium battery second class protection Zapping circuit, the fail safe that can improve power brick.
For solving the problems of the technologies described above, the utility model adopts following technical scheme:
A kind of lithium battery second class protection Zapping circuit, described second class protection Zapping circuit comprise the first fusing module, the second fusing module, start module, control module;
Described control module connects the startup module, in order to send the signal of telecommunication to starting module, to open or to turn-off second class protection;
Described startup module connects the first fusing module, the second fusing module respectively, in order to start the first fusing module, the second fusing module to the battery fuse protection.
As a kind of preferred version of the present utility model, first port of the described first fusing module connects battery cathode, and its second port connects first port of the second fusing module, and second port of the second fusing module connects the charger negative pole.
As a kind of preferred version of the present utility model, described startup module comprises metal-oxide-semiconductor M1, the 3rd resistance R 3, the 4th resistance R 4, voltage stabilizing didoe Z1;
The grid of metal-oxide-semiconductor M1 connects the anode of voltage stabilizing didoe Z1 and first pin of the 3rd resistance R 3, first pin of the 4th resistance R 4;
The source electrode of metal-oxide-semiconductor M1 connects the negative electrode of anode, voltage stabilizing didoe Z1 and second pin of the 3rd resistance R 3.
As a kind of preferred version of the present utility model, first port of second port of the described first fusing module, the second fusing module connects the drain electrode of metal-oxide-semiconductor M1.
As a kind of preferred version of the present utility model, described control module comprises the fuse protection control unit of a plurality of parallel connections, and each fuse protection control unit is furnished with a control interface respectively; Each fuse protection control unit all can send the signal of telecommunication to starting module.
As a kind of preferred version of the present utility model, described control module comprises the fuse protection control unit of three parallel connections, three control interfaces; The fuse protection control unit of three parallel connections comprises the first fuse protection control unit, the second fuse protection control unit, the 3rd fuse protection control unit;
Three control interfaces comprise: the first diode D1, the second diode D2, the 3rd diode D3, first resistance R 1, second resistance R 2, the 5th resistance R 5;
Second pin of the 4th resistance R 4 is connected to the anode of the first diode D1, the second diode D2, the 3rd diode D3;
The negative electrode of the first diode D1 is connected to first pin of first resistance R 1, and second pin of first resistance R 1 is connected to the output of the first fuse protection control unit;
The negative electrode of the second diode D2 is connected to first pin of second resistance R 2, and second pin of second resistance R 2 is connected to the output of the second fuse protection control unit;
The negative electrode of the 3rd diode D3 is connected to first pin of the 5th resistance R 5, and second pin of the 5th resistance R 5 is connected to the output of the 3rd fuse protection control unit.
The beneficial effects of the utility model are: the lithium battery second class protection Zapping circuit that the utility model proposes, can realize the second class protection of low cost, highly reliable, quick fuse, the fail safe that improves power brick.
Description of drawings
Fig. 1 is the composition schematic diagram of the utility model lithium battery second class protection Zapping circuit.
Fig. 2 is the circuit diagram of the utility model lithium battery second class protection Zapping circuit.
Embodiment
Describe preferred embodiment of the present utility model in detail below in conjunction with accompanying drawing.
Embodiment one
See also Fig. 1, Fig. 2, the utility model has disclosed a kind of lithium battery second class protection Zapping circuit, and described second class protection Zapping circuit comprises the first fusing module 1(FU1), the second fusing module 2(FU2), start module 3, control module 4.Described control module 4 connects startup module 3, in order to send the signals of telecommunication to starting module 3, to open or to turn-off second class protection.Described startup module 3 connects the first fusing module 1, the second fusing module 2 respectively, in order to start the first fusing module 1,2 pairs of battery fuse protections of the second fusing module.
First port of the described first fusing module 1 connects battery cathode (network B-), its second port connects first port of the second fusing module 2, second port connection charger negative pole of the second fusing module 2 (network C-, the control MOS front of the negative pole front end that namely charges).
See also Fig. 2, described startup module comprises metal-oxide-semiconductor M1, the 3rd resistance R 3, the 4th resistance R 4, voltage stabilizing didoe Z1; The grid of metal-oxide-semiconductor M1 connects the anode of voltage stabilizing didoe Z1 and first pin of the 3rd resistance R 3, first pin of the 4th resistance R 4; The source electrode of metal-oxide-semiconductor M1 connects the negative electrode of anode (network B+), voltage stabilizing didoe Z1 and second pin of the 3rd resistance R 3.
First port of second port of the described first fusing module 1, the second fusing module 2 connects the drain electrode of metal-oxide-semiconductor M1.
Preferably, described control module 4 comprises the fuse protection control unit of a plurality of parallel connections, and each fuse protection control unit is furnished with a control interface respectively; Each fuse protection control unit all can send the signal of telecommunication to starting module.In the present embodiment, described control module 4 comprises the fuse protection control unit of three parallel connections, three control interfaces; The fuse protection control unit of three parallel connections comprises the first fuse protection control unit, the second fuse protection control unit, the 3rd fuse protection control unit.
Three control interfaces comprise: the first diode D1, the second diode D2, the 3rd diode D3, first resistance R 1, second resistance R 2, the 5th resistance R 5.Second pin of the 4th resistance R 4 is connected to the anode of the first diode D1, the second diode D2, the 3rd diode D3.
The negative electrode of the first diode D1 is connected to first pin of first resistance R 1, and second pin of first resistance R 1 is connected to the output (network C U1) of the first fuse protection control unit; The negative electrode of the second diode D2 is connected to first pin of second resistance R 2, and second pin of second resistance R 2 is connected to the output (network C U2) of the second fuse protection control unit; The negative electrode of the 3rd diode D3 is connected to first pin of the 5th resistance R 5, and second pin of the 5th resistance R 5 is connected to the output (network C U3) of the 3rd fuse protection control unit.
Whole module operation principle is, channel start control end network C U1, and CU2, any one controlled terminal of CU3. is moved low level to.Metal-oxide-semiconductor M1 conducting, electric current is anodal by metal-oxide-semiconductor M1 from power brick, the first fusing module FU1 flows to the power brick negative pole, charging stream flows to the charger positive pole by metal-oxide-semiconductor M1, the second fusing module FU2 simultaneously, thereby make the first fusing module FU1, the second fusing module FU2 fusing cut off charge circuit, withdraw from charging.
In sum, the lithium battery second class protection Zapping circuit that the utility model proposes can be realized the second class protection of low cost, highly reliable, quick fuse, the fail safe that improves power brick.
Here description of the present utility model and application is illustrative, is not to want with scope restriction of the present utility model in the above-described embodiments.Here the distortion of disclosed embodiment and change is possible, and the various parts of the replacement of embodiment and equivalence are known for those those of ordinary skill in the art.Those skilled in the art are noted that under the situation that does not break away from spirit of the present utility model or substantive characteristics, and the utility model can be with other form, structure, layout, ratio, and realize with other assembly, material and parts.Under the situation that does not break away from the utility model scope and spirit, can carry out other distortion and change to disclosed embodiment here.
Claims (6)
1. a lithium battery second class protection Zapping circuit is characterized in that, described second class protection Zapping circuit comprises the first fusing module, the second fusing module, starts module, control module;
Described control module connects the startup module, in order to send the signal of telecommunication to starting module, to open or to turn-off second class protection;
Described startup module connects the first fusing module, the second fusing module respectively, in order to start the first fusing module, the second fusing module to the battery fuse protection.
2. lithium battery second class protection Zapping circuit according to claim 1 is characterized in that:
First port of the described first fusing module connects battery cathode, and its second port connects first port of the second fusing module, and second port of the second fusing module connects the charger negative pole.
3. lithium battery second class protection Zapping circuit according to claim 1 is characterized in that:
Described startup module comprises metal-oxide-semiconductor M1, the 3rd resistance R 3, the 4th resistance R 4, voltage stabilizing didoe Z1;
The grid of metal-oxide-semiconductor M1 connects the anode of voltage stabilizing didoe Z1 and first pin of the 3rd resistance R 3, first pin of the 4th resistance R 4;
The source electrode of metal-oxide-semiconductor M1 connects the negative electrode of anode, voltage stabilizing didoe Z1 and second pin of the 3rd resistance R 3.
4. lithium battery second class protection Zapping circuit according to claim 3 is characterized in that:
First port of second port of the described first fusing module, the second fusing module connects the drain electrode of metal-oxide-semiconductor M1.
5. lithium battery second class protection Zapping circuit according to claim 3 is characterized in that:
Described control module comprises the fuse protection control unit of a plurality of parallel connections, and each fuse protection control unit is furnished with a control interface respectively; Each fuse protection control unit all can send the signal of telecommunication to starting module.
6. lithium battery second class protection Zapping circuit according to claim 5 is characterized in that:
Described control module comprises the fuse protection control unit of three parallel connections, three control interfaces; The fuse protection control unit of three parallel connections comprises the first fuse protection control unit, the second fuse protection control unit, the 3rd fuse protection control unit;
Three control interfaces comprise: the first diode D1, the second diode D2, the 3rd diode D3, first resistance R 1, second resistance R 2, the 5th resistance R 5;
Second pin of the 4th resistance R 4 is connected to the anode of the first diode D1, the second diode D2, the 3rd diode D3;
The negative electrode of the first diode D1 is connected to first pin of first resistance R 1, and second pin of first resistance R 1 is connected to the output of the first fuse protection control unit;
The negative electrode of the second diode D2 is connected to first pin of second resistance R 2, and second pin of second resistance R 2 is connected to the output of the second fuse protection control unit;
The negative electrode of the 3rd diode D3 is connected to first pin of the 5th resistance R 5, and second pin of the 5th resistance R 5 is connected to the output of the 3rd fuse protection control unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320011136 CN203135413U (en) | 2013-01-10 | 2013-01-10 | Lithium battery secondary protection fusing circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320011136 CN203135413U (en) | 2013-01-10 | 2013-01-10 | Lithium battery secondary protection fusing circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203135413U true CN203135413U (en) | 2013-08-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320011136 Expired - Lifetime CN203135413U (en) | 2013-01-10 | 2013-01-10 | Lithium battery secondary protection fusing circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203135413U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115085344A (en) * | 2022-08-22 | 2022-09-20 | 山西科达自控股份有限公司 | Intrinsic safety explosion-proof circuit of lithium battery box |
-
2013
- 2013-01-10 CN CN 201320011136 patent/CN203135413U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115085344A (en) * | 2022-08-22 | 2022-09-20 | 山西科达自控股份有限公司 | Intrinsic safety explosion-proof circuit of lithium battery box |
| CN115085344B (en) * | 2022-08-22 | 2022-11-15 | 山西科达自控股份有限公司 | Intrinsic safety explosion-proof circuit of lithium battery box |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: JIANGSU RICHPOWER NEW ENERGY CO.,LTD. Assignor: Han Jingke Contract record no.: 2014310000091 Denomination of utility model: Triode-based secondary protection fusing circuit for lithium batteries Granted publication date: 20130814 License type: Exclusive License Record date: 20140509 |
|
| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130814 |
|
| CX01 | Expiry of patent term |