CN204046213U - A kind of discharge and recharge is with mouth control circuit - Google Patents
A kind of discharge and recharge is with mouth control circuit Download PDFInfo
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- CN204046213U CN204046213U CN201420387944.4U CN201420387944U CN204046213U CN 204046213 U CN204046213 U CN 204046213U CN 201420387944 U CN201420387944 U CN 201420387944U CN 204046213 U CN204046213 U CN 204046213U
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Abstract
The utility model discloses a kind of discharge and recharge with mouth control circuit, comprise relay, described relay is connected in BMS system, this relay is that one pole often drives D.C. contactor, described relay comprises charge relay and electric discharge relay, at charge relay two ends and an electric discharge relay two ends fly-wheel diode in parallel respectively; At charge relay two ends and an electric discharge relay two ends diode in parallel respectively; Described charge relay and electric discharge relay form cascaded structure; Described charge relay is connected with charge relay control MOS; described electric discharge relay is connected with electric discharge Control MOS, in described charge relay control MOS and an electric discharge Control MOS two ends voltage stabilizing didoe in parallel and a mos gate pole source electrode protective resistance respectively.Relay conducting resistance of the present utility model is less, reduces loss on the contactor when battery pack works, thus can be applicable to high current charge-discharge occasion.
Description
Technical field
The utility model relates to a kind of discharge and recharge with mouth control circuit.
Background technology
Storage battery is current most widely used energy storage device, but due to its voltage and capacity lower, all need in actual applications serial or parallel connection become battery pack use.Due between cell, there is some difference property, a certain batteries may be caused in charge and discharge process to reach prior to other batteries overcharge or excessively put, all battery management system can be assembled to battery pack during practical application, implementing monitoring battery state, the charging and discharging of battery pack is controlled by control charge controller and discharge controller, prevent overcharging and excessively putting of battery, extend the useful life of battery.
The charging and discharging of battery pack has different control modes, and common have discharge and recharge to divide mouth (different mouth) control mode and discharge and recharge with mouth control mode.
Discharge and recharge divides the charging inlet of mouth (different mouth) control mode and battery pack and electric discharge interface to be not same interface, has false point mouth, half point mouth and complete point three kinds, mouth.Battery pack can select suitable charge controller and discharge controller according to the size of charging current and discharging current when discharge and recharge adopts a point mouth mode to control, and reduces charging and controls cost.During the electric discharge of this control mode, discharging current does not flow through charge relay, to a certain degree can reduce energy loss on the controller.Its shortcoming is comparatively complicated for connecting, if connection error, may cause battery protection disabler.
Utility model content
The purpose of this utility model is for above-mentioned defect, provides a kind of discharge and recharge with mouth control circuit.
The utility model solves the technical scheme that its technical problem adopts: a kind of discharge and recharge is with mouth control circuit, comprise relay, described relay is connected in BMS system, this relay is that one pole often drives D.C. contactor, described relay comprises charge relay and electric discharge relay, at charge relay two ends and an electric discharge relay two ends fly-wheel diode in parallel respectively; At charge relay two ends and an electric discharge relay two ends diode in parallel respectively; Described charge relay and electric discharge relay form cascaded structure; Described charge relay is connected with charge relay control MOS, described electric discharge relay is connected with electric discharge Control MOS, in described charge relay control MOS and an electric discharge Control MOS two ends voltage stabilizing didoe in parallel and a mos gate pole source electrode protective resistance respectively; The coil voltage positive pole of described relay is arranged on one end of described relay, and the coil voltage negative pole of described relay is arranged on one end of described voltage stabilizing didoe, and the other end of described voltage stabilizing didoe is as the interface of BMS system charge and discharge control signal; Described BMS system charge and discharge control signal first controls discharge and recharge Control MOS, then controls discharge and recharge relay by discharge and recharge Control MOS.
Described charge relay is charge controller.
Described electric discharge relay is discharge controller.
The charging control signal that described BMS system exports respectively and discharge control signal, charging control signal output is connected on described charge relay; Discharge control signal output is connected on described electric discharge relay.
Beneficial effect; The utility model has the advantage of, adopt one pole often to drive D.C. contactor (relay) as charge controller and discharge controller, it has, and natural arc extinguishing, volume are little, lightweight, the feature such as low-power consumption and high reliability.D.C. contactor conducting resistance is less, thus loss on the contactor when substantially reducing battery pack work, thus can be applicable to high current charge-discharge occasion.Adopt two-step evolution, BMS charge and discharge control signal first controls discharge and recharge Control MOS, then controls discharge and recharge relay by discharge and recharge Control MOS.BMS achieves the relay that a control signal controls different voltage specification, and does not need to do any circuit modification, effectively simplifies control circuit.
Accompanying drawing explanation
Figure l is embodiment schematic diagram of the present utility model.
Embodiment
Embodiment; Shown in composition graphs 1, a kind of discharge and recharge is with mouth control circuit, comprise relay, described relay connects in BMS system, it is characterized in that, this relay is that one pole often drives D.C. contactor, and described relay comprises charge relay and electric discharge relay, at charge relay two ends and an electric discharge relay two ends fly-wheel diode in parallel respectively; At charge relay two ends and an electric discharge relay two ends diode in parallel respectively; Described charge relay and electric discharge relay form cascaded structure; Described charge relay is connected with charge relay control MOS, described electric discharge relay is connected with electric discharge Control MOS, in described charge relay control MOS and an electric discharge Control MOS two ends voltage stabilizing didoe in parallel and a mos gate pole source electrode protective resistance respectively; The coil voltage positive pole of described relay is arranged on one end of described relay, and the coil voltage negative pole of described relay is arranged on one end of described voltage stabilizing didoe, and the other end of described voltage stabilizing didoe is as the interface of BMS system charge and discharge control signal; Described BMS system charge and discharge control signal first controls discharge and recharge Control MOS, then controls discharge and recharge relay by discharge and recharge Control MOS.
Described charge relay is charge controller.
Described electric discharge relay is discharge controller.
The charging control signal that described BMS system exports respectively and discharge control signal, charging control signal output is connected on described charge relay; Discharge control signal output is connected on described electric discharge relay.
Each device and symbol are expressed as in FIG: S1 is charge relay, S2 is electric discharge relay, D1, D2 is high-power fly-wheel diode, D3, D4 is voltage stabilizing didoe, stablize gate-source voltage, prevent metal-oxide-semiconductor breakdown, D5, D6 is general-purpose diode, for absorbing the high pressure that relay coil shutdown transient induces, Q1 is charge relay control MOS, Q2 is electric discharge Control MOS, R1, R2 is respectively Q1 and Q2 mos gate pole source electrode protective resistance, CV is the charging control signal that BMS exports, DV is the discharge control signal that BMS exports, V+, V-is relay coil voltage both positive and negative polarity.
Composition graphs 1, discharge and recharge has following working morphology with mouth control circuit:
1, battery pack is in normal condition: CV, DV are high level, makes the equal conducting of Q1, Q2, and then it is closed with electric discharge relay S2 to control charge relay S1.Battery pack can carry out charging and discharging, and charging current and discharging current all flow through charge relay and the relay that discharges;
2, battery is only crossed and is put, and do not overcharge: when battery is in this state, CV is high level, and DV is low level, Q1 conducting, and Q2 ends, and then it is closed to control charge relay S1, and electric discharge relay S2 disconnects.Now system still allows to charge to battery, and charging current by being connected on the sustained diode 2 at electric discharge relay two ends, then is charged to battery by charge relay S1;
3, battery only overcharges, and do not cross and put: when battery is in this state, CV is low level, and DV is high level, Q1 ends, Q2 conducting, and then controls charge relay S1 disconnection, and electric discharge relay S2 closes.Now system still allows battery externally to discharge, and discharging current by being connected on the sustained diode 1 at charge relay two ends, is more externally discharged by electric discharge relay S2;
4, not only system overcharges but also excessively put: now CV, DV are low level, and Q1, Q2 end, and charge relay S1 and electric discharge relay S2 disconnects, and battery pack can not carry out charging and discharging;
5, battery excess temperature: now CV, DV are low level, Q1, Q2 end, and charge relay S1 and electric discharge relay S2 disconnects, and battery pack can not carry out charging and discharging;
6, discharge and recharge overcurrent: now CV, DV intermittence exports low and high level, Q1, Q2 intermittent conduction and cut-off, and then control charge relay S1 and the intermittent closed and disconnected of electric discharge relay S2;
7, battery pack short circuit: now CV, DV are low level, Q1, Q2 end, and charge relay S1 and electric discharge relay S2 disconnects, and system power failure, battery pack can not carry out charging and discharging.
With above-mentioned according to desirable embodiment of the present utility model for enlightenment, by above-mentioned description, relevant staff in the scope not departing from this utility model technological thought, can carry out various change and amendment completely.The technical scope of this utility model is not limited to the content on specification, must determine its technical scope according to right.
Claims (4)
1. a discharge and recharge is with mouth control circuit, comprise relay, described relay is connected in BMS system, it is characterized in that, this relay is that one pole often drives D.C. contactor, described relay comprises charge relay and electric discharge relay, at charge relay two ends and an electric discharge relay two ends fly-wheel diode in parallel respectively; At charge relay two ends and an electric discharge relay two ends diode in parallel respectively; Described charge relay and electric discharge relay form cascaded structure; Described charge relay is connected with charge relay control MOS, described electric discharge relay is connected with electric discharge Control MOS, in described charge relay control MOS and an electric discharge Control MOS two ends voltage stabilizing didoe in parallel and a mos gate pole source electrode protective resistance respectively; The coil voltage positive pole of described relay is arranged on one end of described relay, and the coil voltage negative pole of described relay is arranged on one end of described voltage stabilizing didoe, and the other end of described voltage stabilizing didoe is as the interface of BMS system charge and discharge control signal; Described BMS system charge and discharge control signal first controls discharge and recharge Control MOS, then controls discharge and recharge relay by discharge and recharge Control MOS.
2. a kind of discharge and recharge according to claim 1 is with mouth control circuit, it is characterized in that, described charge relay is charge controller.
3. a kind of discharge and recharge according to claim 1 is with mouth control circuit, it is characterized in that, described electric discharge relay is discharge controller.
4. a kind of discharge and recharge according to claim 1 is with mouth control circuit, it is characterized in that, the charging control signal that described BMS system exports respectively and discharge control signal, and charging control signal output is connected on described charge relay; Discharge control signal output is connected on described electric discharge relay.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420387944.4U CN204046213U (en) | 2014-07-15 | 2014-07-15 | A kind of discharge and recharge is with mouth control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420387944.4U CN204046213U (en) | 2014-07-15 | 2014-07-15 | A kind of discharge and recharge is with mouth control circuit |
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| Publication Number | Publication Date |
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| CN204046213U true CN204046213U (en) | 2014-12-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420387944.4U Active CN204046213U (en) | 2014-07-15 | 2014-07-15 | A kind of discharge and recharge is with mouth control circuit |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105490255A (en) * | 2016-01-11 | 2016-04-13 | 莆田市云驰新能源汽车研究院有限公司 | Linkage protection and alarm circuit driven by battery management system (BMS) high side |
| CN106953516A (en) * | 2017-04-01 | 2017-07-14 | 西安特锐德智能充电科技有限公司 | A kind of modularization bidirectional, dc power distributing unit |
| CN106945529A (en) * | 2017-05-09 | 2017-07-14 | 苏州载物强劲新材料科技有限公司 | A kind of inexpensive power train in vehicle application li-ion cell protection system |
| CN109842203A (en) * | 2019-01-25 | 2019-06-04 | 格林美股份有限公司 | A kind of ups power management system |
| CN112234671A (en) * | 2020-09-30 | 2021-01-15 | 重庆辉腾能源股份有限公司 | Cascade battery protection circuit |
| WO2023029668A1 (en) * | 2021-08-28 | 2023-03-09 | 比亚迪股份有限公司 | Low-voltage power supply system and vehicle having same |
| CN106953516B (en) * | 2017-04-01 | 2024-04-19 | 西安特来电智能充电科技有限公司 | Modularized bidirectional direct current power distribution unit |
-
2014
- 2014-07-15 CN CN201420387944.4U patent/CN204046213U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105490255A (en) * | 2016-01-11 | 2016-04-13 | 莆田市云驰新能源汽车研究院有限公司 | Linkage protection and alarm circuit driven by battery management system (BMS) high side |
| CN106953516A (en) * | 2017-04-01 | 2017-07-14 | 西安特锐德智能充电科技有限公司 | A kind of modularization bidirectional, dc power distributing unit |
| CN106953516B (en) * | 2017-04-01 | 2024-04-19 | 西安特来电智能充电科技有限公司 | Modularized bidirectional direct current power distribution unit |
| CN106945529A (en) * | 2017-05-09 | 2017-07-14 | 苏州载物强劲新材料科技有限公司 | A kind of inexpensive power train in vehicle application li-ion cell protection system |
| CN109842203A (en) * | 2019-01-25 | 2019-06-04 | 格林美股份有限公司 | A kind of ups power management system |
| CN112234671A (en) * | 2020-09-30 | 2021-01-15 | 重庆辉腾能源股份有限公司 | Cascade battery protection circuit |
| WO2023029668A1 (en) * | 2021-08-28 | 2023-03-09 | 比亚迪股份有限公司 | Low-voltage power supply system and vehicle having same |
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| GR01 | Patent grant |