CN203456930U - Compound energy system - Google Patents
Compound energy system Download PDFInfo
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- CN203456930U CN203456930U CN201320507537.8U CN201320507537U CN203456930U CN 203456930 U CN203456930 U CN 203456930U CN 201320507537 U CN201320507537 U CN 201320507537U CN 203456930 U CN203456930 U CN 203456930U
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- control circuit
- energy
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- storage battery
- battery group
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Abstract
The utility model discloses a compound energy system. The compound energy system comprises a compound power supply and a control system, wherein the compound power supply includes an energy storage battery group and a super capacitor module group which are in parallel connection; the control system includes a control unit, and a discharging/undervoltage control circuit; the discharging/undervoltage control circuit is connected to the control unit; and the discharging/undervoltage control circuit comprises a third electronic switch which is connected with the energy storage battery group and the super capacitor module group. The compound energy system collects current or voltage data of the compound power supply through the control unit, and sends out a control signal to the discharging/undervoltage control circuit to control the opening and closing of the third electronic switch after analyzing and judging the data. Meanwhile, the energy storage battery group and the super capacitor module group are disconnected, the energy storage battery group is protected against over discharge, and energy loss is reduced, so that the over discharge of the compound power supply is avoided, and the aim for protecting the compound power supply is achieved.
Description
Technical field
The utility model relates to the control technology field of the composite power source consisting of lithium ion battery or lead-acid battery and ultracapacitor module, relates in particular to a kind of compound energy system.
Background technology
The integral body that compound energy system is connected by electronics with ultracapacitor module by energy-storage battery group and the firm set of mechanical connecting element forms.At present, conventional energy-storage battery group comprises lead-acid battery group, lithium ion battery group and fuel cell unit.Composite power source is by the mutual supplement with each other's advantages between ultracapacitor module high power density and energy-storage battery group high-energy-density, demand when meeting site of deployment to energy and power.
Yet, due to the difference of ultracapacitor module and energy-storage battery group self-characteristic, while directly ultracapacitor module being incorporated to existing energy-storage battery group, if there is no certain electronic control means, tend to cause the damage of energy-storage battery group.Such as, because the leakage current of ultracapacitor module is larger, when ultracapacitor module discharges into 0V, if the energy flow between ultracapacitor module and energy-storage battery group is not made to certain scheduling, by having very large electric current, by energy-storage battery group, to super capacitor module, charge, there will be like this sparking or because heavy-current discharge damages energy-storage battery group.In addition, when ultracapacitor and energy-storage battery group leader time are when on the shelf, ultracapacitor module can constantly consume the energy of energy-storage battery group, so that the voltage of energy-storage battery group is put into below overdischarge pressure, the performance of composite power source is had a strong impact on, extreme in the situation that, even cause potential safety hazard.
Utility model content
In order to solve the problem of prior art, the utility model embodiment provides a kind of energy-storage battery group can be because of the leakage current self discharge of ultracapacitor module by the compound energy system of ultracapacitor module overdischarge.Described technical scheme is as follows:
On the one hand, provide a kind of compound energy system, it comprises composite power source, and described composite power source comprises energy-storage battery group and the ultracapacitor module being connected in parallel, and described compound energy system also comprises control system; Described control system comprises control unit and electric discharge/under-voltage control circuit; Described electric discharge/under-voltage control circuit is connected in described control unit, and described electric discharge/under-voltage control circuit comprises the 3rd electronic switch that connects described energy-storage battery group and described ultracapacitor module.
Further, described control system also comprises flow-dividing control circuit, and described flow-dividing control circuit is connected in described control unit, and described flow-dividing control circuit comprises second electronic switch and a current-limiting resistance of connecting with described energy-storage battery group.
Further, described control system also comprises precharge control circuit, described precharge control circuit is connected in described control unit, and described precharge control circuit comprises first electronic switch that connects described energy-storage battery group and described ultracapacitor module.
Further, described control unit comprises information acquisition module and the Logic control module being connected with described information acquisition module, described information acquisition module is electrically connected the branch road at the two ends of described composite power source, described ultracapacitor module and described energy-storage battery group place, and described precharge control circuit, described flow-dividing control circuit and described electric discharge/under-voltage control circuit all connect described Logic control module.
Further, described control unit also comprises the pulse width modulation module being connected with described Logic control module, and described control system also comprises the charging control circuit that connects pulse width modulation module and described composite power source described in connection.
Further, described control unit is a single-chip microcomputer.
The beneficial effect that the technical scheme that the utility model embodiment provides is brought is:
Compound energy system of the present utility model gathers voltage or the current data of composite power source by control unit, and according to transmitting control signal to electric discharge/under-voltage control circuit after this data analysis judgement, to control the 3rd electronic switch, disconnects.Now, energy-storage battery group and ultracapacitor module disconnect, and protection energy-storage battery group is not by overdischarge and reduce energy loss, thereby avoided the over-discharge can of composite power source, reaches the object of protection composite power source.
In addition; compound energy system gathers the voltage of energy-storage battery group and superbattery module by control unit; and according to transmitting control signal to precharge control circuit after this data analysis judgement; to control closure and the disconnection of the first electronic switch; thereby reach energy-storage battery group and can not be connected the phenomenon that produces sparking or heavy-current discharge when with super capacitor module voltage difference excessive (more than 1V); and infringement energy-storage battery group plays a protective role to energy-storage battery group.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the utility model embodiment, below the accompanying drawing of required use during embodiment is described is briefly described, apparently, accompanying drawing in the following describes is only embodiment more of the present utility model, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the structural representation of compound energy system of the present utility model.
Embodiment
For making the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with accompanying drawing, the utility model execution mode is described in further detail.
Please refer to Fig. 1, the utility model embodiment provides a kind of compound energy system, and it comprises composite power source and control system, and charging and discharging currents and state-of-charge when this control system is used for composite power source to work under various different modes regulate and control.This control system comprises control unit 1, charging control circuit 2, precharge control circuit 3, flow-dividing control circuit 4 and electric discharge/under-voltage control circuit 5.
Composite power source comprises the energy-storage battery group 10 and ultracapacitor module 20 being connected in parallel.
Control unit 1 comprises information acquisition module 11, Logic control module 13 and pulse width modulation module 15.As preferred implementation, control unit 1 is a single-chip microcomputer.Information acquisition module 11 is electrically connected the two ends of composite power source, the branch road at the two ends of ultracapacitor module 20, energy-storage battery group 10 places, for detection of the voltage of composite power source, the branch current of the energy-storage battery group of flowing through 10 place branch roads and the voltage of ultracapacitor module 20.Logic control module 13 link information acquisition modules 11, for the data analysis contrast that information acquisition module 11 is gathered.Pulse width modulation module 15 connects Logic control module 13, for carry out the pulse-width adjustment of signal according to the analysis result of Logic control module 13.
Charging control circuit 2 is for charging to composite power source.Charging control circuit 2 connects pulse width modulation module 15 and composite power source.
Electric discharge/under-voltage control circuit 5 is connected in the Logic control module 13 of control unit 1.Electric discharge/under-voltage control circuit 5 comprises the 3rd electronic switch 51 that connects energy-storage battery group 10 and ultracapacitor module 20.
Precharge control circuit 3 is connected in the Logic control module 13 of control unit 1.Precharge control circuit 3 comprises first electronic switch 31 that connects energy-storage battery group 10 and ultracapacitor module 20.Because super capacitor module 20 can discharge into 0V, and energy-storage battery group 10 can not discharge into 0V and voltage is higher, can not short circuit or heavy-current discharge.When the voltage of super capacitor module 20 is 0V or voltage when lower, the voltage of energy-storage battery group 10 is also higher.If have control circuit to control 10 electric discharges of energy-storage battery group, now by have very large electric current by energy-storage battery group 10 to 20 chargings of super capacitor module, there will be like this sparking or because heavy-current discharge damages energy-storage battery group 10.After being provided with precharge control circuit 3, the voltage difference that the information acquisition module 11 of control unit 1 collects ultracapacitor module 20 and energy-storage battery group 10 is greater than difference that control unit 1 sets constantly, Logic control module 13 is controlled the first electronic switch 31 conductings, controlling the 3rd electronic switch 51 disconnects, now energy-storage battery module 10 gives super capacitor module 20 chargings by preliminary filling control circuit 31, avoided super capacitor module 20 and energy-storage battery group 10 to form closed-loop path by the 3rd electronic switch 51, thereby there is very large electric current to charge to super capacitor module 20 by energy-storage battery group 10, can avoid like this occurring sparking or because heavy-current discharge damages energy-storage battery group 10.As preferred implementation, the difference that control unit 1 is set is 1V, that is: the voltage difference of the voltage of ultracapacitor module 20 and energy-storage battery group 10 is greater than 1V when above, Logic control module 13 is controlled the first electronic switch 31 closures, is controlled the 3rd electronic switch 51 and disconnect.
Flow-dividing control circuit 4 is connected in the Logic control module 13 of control unit 1.Flow-dividing control circuit 4 comprises a current-limiting resistance 41 of connecting with energy-storage battery group 10 and second electronic switch 43.The second electronic switch 43 is in parallel with current-limiting resistance 41, is the two ends that the two ends of the second electronic switch 43 are connected to current-limiting resistance 41.
The control system of compound energy system of the present utility model can be according to the different operating state of composite power source, take to discharge and recharge accordingly control model and corresponding circuit structure, charging and discharging currents and state-of-charge when composite power source is worked under various different modes to realize regulate and control.Specific as follows:
When composite power source is worked under charge mode, information acquisition module 11 periodically detects the terminal voltage of composite power source; The magnitude of voltage that Logic control module 13 collects information acquisition module 11 and the charging voltage value of default compare, and send control signal to pulse width modulation module 15 according to comparative result, to realize according to the different state-of-charges of compound energy, adopting flexibly different charging modes is the object that compound energy supplements electric power.As preferred implementation, particularly, in the present embodiment, the voltage that Logic control module 13 collects according to information acquisition module 11 calculates the state-of-charge of composite power source, and the charging voltage value of the state-of-charge of composite power source and default is compared.When the state-of-charge of composite power source is less than 5%, pulse width modulation module 15 is sent control signal to charging control circuit 2, and making charging control circuit 2 adopt the mode of constant current charge is composite power source charging, and the size of charging current is now I1.When the state-of-charge of composite power source is greater than 15% while being less than 95%, to control charging control circuit 2 and adopt the mode of constant current-constant voltages to charge, the size of charging current is now I2, and I2 > I1; The voltage swing in constant voltage charge stage is VC, and VC is less than the upper voltage limit V of charging
the upper limit.When the state-of-charge of composite power source approaches 100%, Logic control module 13 plays monitoring effect, the size of the electric current when voltage signal that it collects according to information acquisition module 11 judges trickle charge, on the one hand composite power source is safeguarded, made the state-of-charge of composite power source maintain best stand-by state on the one hand.
When composite power source is worked under discharge mode, information acquisition module 11 periodically detects the voltage of composite power source; The discharge voltage threshold values of the magnitude of voltage that Logic control module 13 collects information acquisition module 11 and systemic presupposition compares.When the magnitude of voltage collecting when information acquisition module 11 is less than the discharge voltage threshold values of systemic presupposition, Logic control module 13 sends a signal that disconnects discharge loop to electric discharge/under-voltage control circuit 5, and the 3rd electronic switch 51 of electric discharge/under-voltage control circuit 5 is disconnected.Now, energy-storage battery group 10 and ultracapacitor module 20 disconnect, thereby have avoided the over-discharge can of composite power source.
And while working under discharge mode, information acquisition module 11 gathers the size of current of energy-storage battery group 10 branch roads; The lowest high-current value that the branch current of energy-storage battery group 10 that Logic control module 13 collects information acquisition module 11 and the permission of default are passed through compares.When the branch current that energy-storage battery group 10 detected when information acquisition module 11 is greater than the lowest high-current value that the permission of default passes through, Logic control module 13 sends control signal to flow-dividing control circuit 4, the second electronic switch 43 of flow-dividing control circuit 4 is disconnected, now, current-limiting resistance 41 is connected with energy-storage battery group 10.Thereby electric current reduces the discharging current of energy-storage battery group 10 through current-limiting resistance 41, to reduce the electric current of energy-storage battery group 10 place branch roads; Allow super capacitor module 20 bear most current impulse, the electric current of the energy-storage battery group 10 place branch roads that guaranteed to flow through is no more than the lowest high-current value of energy-storage battery group 10 trouble free services, thereby reaches the object of protection energy-storage battery group 10.
When composite power source is during in idle state, information acquisition module 11 periodically detects the voltage of composite power source; The variable gradient that the terminal voltage analysis that Logic control module 13 collects composite power source by information acquisition module 11 obtains voltage is dv/dt, and be that dv/dt contrasts with the change in voltage gradient dv0/dt0 being caused by composite power source self discharge by this variable gradient, when comparing result scope is during at 0.8-1, Logic control module 13 sends a control signal to electric discharge/under-voltage control circuit 5, and the 3rd electronic switch 51 of electric discharge/under-voltage control circuit 5 is disconnected.Now, energy-storage battery group 10 and ultracapacitor module 20 disconnect, and protection energy-storage battery group 10 is not by overdischarge and reduce energy loss, reaches the object of protection composite power source.As preferred implementation, the variable gradient of the terminal voltage of composite power source is that dv/dt contrasts with the change in voltage gradient dv0/dt0 being caused by composite power source self discharge, and when comparing result is 1, Logic control module 13 is controlled the 3rd electronic switch 51 and disconnected.
The compound energy system of the utility model embodiment gathers voltage or the current data of composite power source by control unit 1, and according to transmitting control signal to electric discharge/under-voltage control circuit 5 after this data analysis judgement, to control the 3rd electronic switch 51, disconnects.Now, energy-storage battery group and ultracapacitor module disconnect, and protection energy-storage battery group is not by overdischarge and reduce energy loss, thereby avoided the over-discharge can of composite power source, reaches the object of protection composite power source.
The foregoing is only preferred embodiment of the present utility model, not in order to limit the utility model, all within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection range of the present utility model.
Claims (6)
1. a compound energy system, it comprises composite power source, and described composite power source comprises energy-storage battery group and the ultracapacitor module being connected in parallel, and it is characterized in that, and described compound energy system also comprises control system;
Described control system comprises control unit and electric discharge/under-voltage control circuit;
Described electric discharge/under-voltage control circuit is connected in described control unit, and described electric discharge/under-voltage control circuit comprises the 3rd electronic switch that connects described energy-storage battery group and described ultracapacitor module.
2. compound energy system according to claim 1, it is characterized in that, described control system also comprises flow-dividing control circuit, described flow-dividing control circuit is connected in described control unit, and described flow-dividing control circuit comprises second electronic switch and a current-limiting resistance of connecting with described energy-storage battery group.
3. compound energy system according to claim 2, it is characterized in that, described control system also comprises precharge control circuit, described precharge control circuit is connected in described control unit, and described precharge control circuit comprises first electronic switch that connects described energy-storage battery group and described ultracapacitor module.
4. compound energy system according to claim 3, it is characterized in that, described control unit comprises information acquisition module and the Logic control module being connected with described information acquisition module, described information acquisition module is electrically connected the branch road at the two ends of described composite power source, described ultracapacitor module and described energy-storage battery group place, and described precharge control circuit, described flow-dividing control circuit and described electric discharge/under-voltage control circuit all connect described Logic control module.
5. compound energy system according to claim 4, it is characterized in that, described control unit also comprises the pulse width modulation module being connected with described Logic control module, and described control system also comprises the charging control circuit that connects pulse width modulation module and described composite power source described in connection.
6. compound energy system according to claim 1, is characterized in that, described control unit is a single-chip microcomputer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320507537.8U CN203456930U (en) | 2013-08-19 | 2013-08-19 | Compound energy system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320507537.8U CN203456930U (en) | 2013-08-19 | 2013-08-19 | Compound energy system |
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| CN203456930U true CN203456930U (en) | 2014-02-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201320507537.8U Expired - Fee Related CN203456930U (en) | 2013-08-19 | 2013-08-19 | Compound energy system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103457338A (en) * | 2013-08-19 | 2013-12-18 | 武汉威科奇新动力能源科技有限公司 | Compound energy system and control method |
| CN107161025A (en) * | 2017-06-09 | 2017-09-15 | 吴晓梅 | The charging method and system of a kind of vehicle mounted dynamic battery |
| CN111391676A (en) * | 2020-03-20 | 2020-07-10 | 重庆中科超容科技有限公司 | Super capacitor and battery parallel control system |
| CN112886693A (en) * | 2021-02-02 | 2021-06-01 | 黄国平 | Power supply system |
-
2013
- 2013-08-19 CN CN201320507537.8U patent/CN203456930U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103457338A (en) * | 2013-08-19 | 2013-12-18 | 武汉威科奇新动力能源科技有限公司 | Compound energy system and control method |
| CN107161025A (en) * | 2017-06-09 | 2017-09-15 | 吴晓梅 | The charging method and system of a kind of vehicle mounted dynamic battery |
| CN111391676A (en) * | 2020-03-20 | 2020-07-10 | 重庆中科超容科技有限公司 | Super capacitor and battery parallel control system |
| CN112886693A (en) * | 2021-02-02 | 2021-06-01 | 黄国平 | Power supply system |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140226 Termination date: 20150819 |
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| EXPY | Termination of patent right or utility model |