CN202474829U - Heavy current switch group circuit for power lithium ion protection plate - Google Patents
Heavy current switch group circuit for power lithium ion protection plate Download PDFInfo
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- CN202474829U CN202474829U CN2011201340905U CN201120134090U CN202474829U CN 202474829 U CN202474829 U CN 202474829U CN 2011201340905 U CN2011201340905 U CN 2011201340905U CN 201120134090 U CN201120134090 U CN 201120134090U CN 202474829 U CN202474829 U CN 202474829U
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- current switch
- power
- current
- lithium ion
- circuit
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Abstract
The utility model discloses a heavy current switch group circuit for a power lithium ion protection plate, comprising first and second current switch assemblies with a same structure, wherein the current switch assemblies comprise a drive integrated circuit, an isolation drive power supply, and a drive buffer stage, wherein a plurality of groups of power MOS tubes are connected in parallel to form a current switch, an absorption circuit formed by resistors and capacitors in series is connected in parallel between the source electrode and the drain electrode of each power MOS tube, current terminals are formed by interconnection among the source electrodes and interconnection among the drain electrodes of the power MOS tubes of the current switch assemblies and one current terminal of the first current switch assembly is connected with the same-electrode current terminal of the second current switch assembly to form a serially-connected heavy current switch group for a power lithium ion protection plate. The heavy current switch group circuit for a power lithium ion protection plate can increase the reliability of the switch components of a power lithium ion protection system used for high-power power equipment.
Description
Technical field
Be applied in the switch module in the power rechargeable battery protection system.Be particularly suited for being applied in rechargeable batteries such as lithium ion power.
Background technology
Current driving force rechargeable battery development is accelerated day by day, the great technological difficulties that power rechargeable battery fail safe and integrity problem in use is the rechargeable battery applications field.For example, so lithium ion power must be installed battery protection circuit in view of it has certain danger in the charge or discharge duty cycle.And in the conventional battery protective circuit, when the super-large current output/input of battery more than tens of or hundreds of ampere, how to guarantee the reliability of battery protecting circuit, this problem is the technical bottleneck of present rechargeable battery protective circuit always.Lithium ion power baffle high-current switch assembly provides a kind of mentality of designing and method that can be applied in big electric current and even super-large current protection system switch block.The utility model has well solved integrity problem.
Summary of the invention
The purpose of the utility model is: the reliability that improves the switch block of the lithium ion power protection system that is currently applied to high-power chain drive.To reduce the power switch component failure that is arranged on the battery protection system in the power lithium-ion battery device significantly; And cause the overdischarge of this cell apparatus; Overcharge; Unusual open circuits etc. cause the fault of battery failure, and this cell apparatus causes the risk of battery blast on fire because of unusual short circuit.
The utility model lithium ion power baffle high-current switch assembly circuit has been revised the drive system of metal-oxide-semiconductor power switch in the prior art; Abandon traditional controller and export the weak signal type of drive mode of direct driving power metal-oxide-semiconductor; Increase special power MOS drive integrated circult and come driven MOS tube power switch; This special power MOS drive integrated circult possesses the amplification buffer stage; And increased clamping protective circuit, can export enough strong driving power driven MOS pipe, and the negative level that turn-offs metal-oxide-semiconductor is provided; The driving power of independently isolating is provided.In the lithium ion power baffle high-current switch assembly circuit of the utility model, use two groups of identical metal-oxide-semiconductor parallel connection combinational circuits, on the electric current output channel, with above-mentioned two groups of metal-oxide-semiconductors parallel connection combinational circuit differential concatenation; The input power supply of the control circuit of two groups of metal-oxide-semiconductor (PCC) powers and input signal are put forward reliability and are improved the current switch ability with the mode of sharing.
The utility model requires the high-current switch group of a kind of power lithium-ion battery baffle of protection; The high-current switch group of this lithium ion power baffle comprises the first current switch assembly and the second current switch assembly that structure is identical; Said current switch assembly comprises: drive integrated circult; The isolation drive power supply; Drive buffer stage, the power MOS pipe that many groups are connected in parallel constitutes current switch, the absorption circuit that parallel connection is made up of resistance and capacitances in series between the source electrode of each power MOS pipe and the drain electrode; The interconnected formation current terminal of the source electrode of each power MOS pipe of said current switch assembly and source electrode, drain electrode and drain electrode; Current terminal of the first current switch assembly is connected with the homonymy electrode current terminal of the second current switch assembly, constitutes the high-current switch group of this lithium ion power baffle of series connection, and first another current terminal of current switch assembly is connected battery and load circuit respectively with the homonymy electrode current terminal of the second current switch assembly.
Wherein drive integrated circult has one group of function control line, comprises the following outside holding wire terminal that connects: signal just, signal is negative, fault-signal output, input fault ring off signal.The drive signal output of drive integrated circult provides the signal of the output with positive negative level after the buffer stage of overdriving is amplified, this has the control electrode that positive negative level output signal offers each power MOS pipe, is used for the conducting or the shutoff of driving power metal-oxide-semiconductor.Said isolation drive power supply is by the direct current supply power of input, and the isolation drive power supply is supplied power to drive integrated circult, and the isolation drive power supply comprises a switch power module, and the direct current of importing is transformed to one group of positive-negative power output with common port.Said positive-negative power output with common port is supplied with and is driven buffer stage.Said positive-negative power with common port is preferably ± 15V.Said driving buffer stage comprises two transistors that control electrode is interconnected; The conduction polarity of two transistor is opposite; The interconnected drive signal that the driving power metal-oxide-semiconductor is provided of a pair of galvanic electrode of two transistor, the other a pair of galvanic electrode of two transistor are connected respectively to the positive-negative power output of insulating power supply output.Said driving buffer stage transistor is respectively NPN type and positive-negative-positive bipolar transistor.
The high-current switch group of said lithium ion power baffle comprises the current anomaly testing circuit.This current anomaly testing circuit can cut off each power MOS pipe in the first current switch assembly and the second current switch assembly when current anomaly appears in whole high-current switch group, and gives external control circuit by current anomaly fault-signal of drive integrated circult output simultaneously.Said current anomaly testing circuit is to confirm the current anomaly fault through the voltage drop between detection power metal-oxide-semiconductor source electrode and the drain electrode.
Wherein drive integrated circult can be selected the special-purpose drive integrated circult HCPL316J of Hewlett-Packard Corporation for use.
Below in conjunction with accompanying drawing the utility model is made further detailed description
Description of drawings:
Fig. 1: the circuit theory frame accompanying drawing of the switches set circuit of the utility model.
Fig. 2: the isolation drive power circuit of the first current switch assembly A of the switches set circuit of the utility model.
Fig. 3: the isolation drive power circuit of the second current switch assembly B of the switches set circuit of the utility model.
Fig. 4: the input/output interface circuit of the switches set circuit of the utility model.
Fig. 5: the switches set circuit chip interface protective circuit 1 of the utility model.
Fig. 6: the switches set circuit chip interface protective circuit 2 of the utility model.
Fig. 7: the switches set circuit chip interface protective circuit 3 of the utility model.
Fig. 8: the drive integrated circult of the first current switch assembly of the switches set circuit of the utility model and drive signal buffer circuit.
Fig. 9: the second current switch assembly drive integrated circult and the drive signal buffer circuit of the switches set circuit of the utility model.
Figure 10: the power MOS pipe combinational circuit first half schematic diagram of the first and second current switch assemblies of the switches set circuit of the utility model.
Figure 11: the power MOS pipe combinational circuit latter half schematic diagram of the first and second current switch assemblies of the switches set circuit of the utility model.
Embodiment:
Below in conjunction with accompanying drawing the utility model lithium ion power baffle high-current switch group circuit is carried out detailed explanation:
The theory diagram of the high-current switch group of lithium ion power baffle is shown in accompanying drawing 1; Whole power section is divided into the first identical current switch assembly and second current switch assembly two parts; Function control line wherein: the positive in+ of signal; Signal is born in-; The trouble shooting rest and the power supply DC12_in of the first current switch assembly share, and OUT_D directly is connected the output of the two-part drain electrode end power of the first current switch assembly A and the second current switch assembly B, export OUT_S to the first current switch assembly and the two-part source terminal power of the second current switch assembly and are connected respectively to battery and load to have constituted a super-large current switch power group; We are set at the connection battery to the OUT_S of the power first current switch components in the 1st embodiment, and the OUT_S of the second current switch components is set at the connection load.Wherein the circuit first current switch assembly or the second current switch assembly all comprise following 4 major parts; Isolation drive power supply 2 has comprised a DC/DC power supply; Behind DC12_in input 12V direct voltage; Be transformed into the voltage that one group of positive 15V bears 15V through DC/DC, independently working power be provided to circuit.Also comprised a drive integrated circult IC, be responsible for the order of response external upper control machine, handled unusual overcurrent and return fault-signal, metal-oxide-semiconductor switching signal and driving force are provided simultaneously.Control signal is imported after the IC of overdriving is delivered to driving buffer stage 3 after handling by positive in+ of the signal of circuit and the negative in-of signal; Drive signal behind the current buffering of the buffer stage of overdriving is delivered to the grid by the metal-oxide-semiconductor of a plurality of parallel connections; The opening and closing of control metal-oxide-semiconductor; Simultaneously power MOS pipe part 4 is connected to drive integrated circult IC through circuit such as diodes, returns a malfunction.If current anomaly drive integrated circult IC closes power MOS pipe automatically, export a fault status signal at the failure output terminal of the first current switch assembly simultaneously.The malfunction releasing need be sent a reset command on trouble shooting end rest.
Because the circuit structure of the first current switch assembly and the second current switch assembly is identical; Thereby first current switch assembly and the second current switch combination of components mode also can adopt other forms combinations; For example the drain electrode end power of two groups of current switch assemblies output OUT_D connects power supply and load respectively, and the source terminal power of two groups of current switch assemblies output OUT_S directly connects.Power MOS pipe also can be by bipolar power transistor or IGBT replacement.
Accompanying drawing 5-7 is the chip interface protective circuit, belongs to protective circuit structure commonly used, has described in detail clearly in the accompanying drawing, no longer sews and states.
Last circuit also comprises some interfaces, and JA10 JA4 etc. provide the interconnection of signal between the plank and the connection of power supply.
The function declaration of the corresponding relation of pipe switch and signal: when high level of the positive in+ input of signal; When one of the negative in-input of signal was low level, the metal-oxide-semiconductor of power control A and joint group and power control BMOS pipe also joint group were all opened simultaneously, and battery-end OUT__D and load end OUT_D are coupled together by module; Be similar to the contactor adhesive; The loop allows electric current and flows through, otherwise the loop disconnection does not allow electric current and flows through.When module is opened; If circuit has unusually; Cause among current anomaly overcurrent power control board A or the power control board B conduction voltage drop that drive integrated circult separately can detect metal-oxide-semiconductor parallel connection crowd greater than the protection point; Turn-off metal-oxide-semiconductor rapidly, and, tell the control section host computer current anomaly to occur simultaneously from low level signal of fault output fault port output.When need starting from error protection once more, circuit must send a low level pulse for trouble shooting rest at control circuit; Remove to remove the fault locking state; And then give the positive in+ input of signal a high level; Low level of the negative in-input of signal, the metal-oxide-semiconductor of power control A and joint group and power control BMOS pipe and joint group just can be opened once more.
Foregoing circuit principle and circuit structure are one of preferred embodiment of the utility model, but not to unique qualification of the utility model protection range, the identical making of all the utility model claims limited ranges all belongs to the scope that the utility model is contained.
Claims (11)
1. lithium ion power baffle high-current switch group circuit; It is characterized in that; The high-current switch group of this lithium ion power baffle comprises the first current switch assembly and the second current switch assembly that structure is identical; Said current switch assembly comprises: drive integrated circult, and the isolation drive power supply drives buffer stage; The power MOS pipe that many groups are connected in parallel constitutes current switch; The absorption circuit that parallel connection is made up of resistance and capacitances in series between the source electrode of each power MOS pipe and the drain electrode, the interconnected formation current terminal of the source electrode of each power MOS pipe of said current switch assembly and source electrode, drain electrode and drain electrode, current terminal of the first current switch assembly is connected with the homonymy electrode current terminal of the second current switch assembly; Constitute the high-current switch group of this lithium ion power baffle of series connection, first another current terminal of current switch assembly is connected battery and load circuit respectively with the homonymy electrode current terminal of the second current switch assembly.
2. lithium ion power baffle high-current switch group circuit as claimed in claim 1; Wherein drive integrated circult has one group of function control line, comprises the following outside holding wire terminal that connects: signal just, signal is negative; Fault-signal output, the input fault ring off signal.
3. lithium ion power baffle high-current switch group circuit as claimed in claim 1; The drive signal output of drive integrated circult provides the signal of the output with positive negative level after the buffer stage of overdriving is amplified; This has the control electrode that positive negative level output signal offers each power MOS pipe, is used for the conducting or the shutoff of driving power metal-oxide-semiconductor.
4. lithium ion power baffle high-current switch group circuit as claimed in claim 1, wherein drive integrated circult is the special-purpose drive integrated circult HCPL316J of Hewlett-Packard Corporation.
5. lithium ion power baffle high-current switch group circuit as claimed in claim 1; Said isolation drive power supply is by the direct current supply power of input; The isolation drive power supply is supplied power to drive integrated circult; The isolation drive power supply comprises a switch power module, and the direct current of importing is transformed to one group of positive-negative power output with common port.
6. lithium ion power baffle high-current switch group circuit as claimed in claim 5, said positive-negative power output with common port is supplied with and is driven buffer stage.
7. lithium ion power baffle high-current switch group circuit as claimed in claim 5, said positive-negative power with common port is preferably ± 15V.
8. lithium ion power baffle high-current switch group circuit as claimed in claim 1; Said driving buffer stage comprises two transistors that control electrode is interconnected; The conduction polarity of two transistor is opposite; The interconnected drive signal that the driving power metal-oxide-semiconductor is provided of a pair of galvanic electrode of two transistor, the other a pair of galvanic electrode of two transistor are connected respectively to the positive-negative power output of insulating power supply output.
9. lithium ion power baffle high-current switch group circuit as claimed in claim 8, the transistor of said driving buffer stage is respectively NPN type and positive-negative-positive bipolar transistor.
10. lithium ion power baffle high-current switch group circuit as claimed in claim 1; The high-current switch group of said lithium ion power baffle comprises the current anomaly testing circuit; This current anomaly testing circuit can cut off each power MOS pipe in the first current switch assembly and the second current switch assembly when current anomaly appears in whole high-current switch group, and gives external control circuit by current anomaly fault-signal of drive integrated circult output simultaneously.
11. lithium ion power baffle high-current switch group circuit as claimed in claim 10, said current anomaly testing circuit are to confirm the current anomaly fault through the voltage drop between detection power metal-oxide-semiconductor source electrode and the drain electrode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201340905U CN202474829U (en) | 2011-04-29 | 2011-04-29 | Heavy current switch group circuit for power lithium ion protection plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201340905U CN202474829U (en) | 2011-04-29 | 2011-04-29 | Heavy current switch group circuit for power lithium ion protection plate |
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| Publication Number | Publication Date |
|---|---|
| CN202474829U true CN202474829U (en) | 2012-10-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201340905U Expired - Fee Related CN202474829U (en) | 2011-04-29 | 2011-04-29 | Heavy current switch group circuit for power lithium ion protection plate |
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| CN (1) | CN202474829U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102856885A (en) * | 2011-04-29 | 2013-01-02 | 韩竞科 | Dynamic lithium ion protective plate large current switch group circuit |
| CN104166769A (en) * | 2014-08-20 | 2014-11-26 | 浪潮电子信息产业股份有限公司 | Designing method for achieving PCB layer multiplexing through control of MOS tubes |
-
2011
- 2011-04-29 CN CN2011201340905U patent/CN202474829U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102856885A (en) * | 2011-04-29 | 2013-01-02 | 韩竞科 | Dynamic lithium ion protective plate large current switch group circuit |
| CN104166769A (en) * | 2014-08-20 | 2014-11-26 | 浪潮电子信息产业股份有限公司 | Designing method for achieving PCB layer multiplexing through control of MOS tubes |
| CN104166769B (en) * | 2014-08-20 | 2017-03-15 | 郑州云海信息技术有限公司 | A kind of method for designing being multiplexed by metal-oxide-semiconductor control realization PCB layer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121003 Termination date: 20130429 |