CN107742974B - Discharging device and energy storage device discharging system - Google Patents
Discharging device and energy storage device discharging system Download PDFInfo
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- CN107742974B CN107742974B CN201711115630.3A CN201711115630A CN107742974B CN 107742974 B CN107742974 B CN 107742974B CN 201711115630 A CN201711115630 A CN 201711115630A CN 107742974 B CN107742974 B CN 107742974B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/32—Means for protecting converters other than automatic disconnection
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/32—Means for protecting converters other than automatic disconnection
- H02M1/322—Means for rapidly discharging a capacitor of the converter for protecting electrical components or for preventing electrical shock
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
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Abstract
The application discloses discharge device includes: the device comprises a first current transformation module, a second current transformation module, a power supply module, a fan module and a discharge module; the output end of the energy storage device is respectively connected with the input end of the first current conversion module and the input end of the second current conversion module, the output end of the first current conversion module is connected with the discharge module, and the output end of the second current conversion module is respectively connected with the input end of the power supply module and the input end of the fan module; the first current transformation module outputs a first voltage, the second current transformation module outputs a second voltage, and the first voltage is greater than the second voltage. Therefore, the first current transformation module can enable the discharge module to discharge constantly, the power supply module and the fan module in the second current transformation module consume certain electric energy, and the fan module plays a role in heat dissipation, so that the discharge device is high in discharge efficiency, simple in structure and convenient for workers to use. Correspondingly, the energy storage device discharging system disclosed by the invention also has the beneficial effects.
Description
Technical Field
The invention relates to the technical field of power electronics, in particular to a discharging device and an energy storage device discharging system.
Background
Along with the development of social economy, the energy storage device is more and more receiving people's general attention as a novel green energy, and the discharge device of energy storage device main part is to releasing the electric quantity of storage on the energy storage device with thermal form. In the prior art, the energy storage device is mainly discharged through the constant resistor and the adjustable resistor, and in the process of discharging through the constant resistor, because the resistor is a constant value, the discharging current is gradually reduced in the discharging process, and thus the discharging power is gradually reduced, so that a long time is needed for discharging the electric quantity in the energy storage device, and the efficiency is low. And in the process of discharging with adjustable resistance, because resistance is adjustable, so in the discharge process, reduce the resistance value of discharging gradually, discharge current will increase from this, discharge power also can corresponding increase simultaneously, but this kind of discharge mode structure is complicated, bulky, is unfavorable for staff to operate at the scene, carries inconveniently, so, how to utilize better method to discharge to energy storage device, is the problem that technical staff in the field had a high need to solve.
Disclosure of Invention
In view of the above, the present invention provides a discharging apparatus and an energy storage device discharging system, which are capable of improving the portability of the discharging apparatus and shortening the time required for discharging the energy storage device. The specific scheme is as follows:
an electric discharge device comprising:
the device comprises a first current transformation module, a second current transformation module, a power supply module, a fan module and a discharge module;
the output end of the energy storage device is respectively connected with the input end of the first current conversion module and the input end of the second current conversion module, the output end of the first current conversion module is connected with the discharge module, and the output end of the second current conversion module is respectively connected with the input end of the power supply module and the input end of the fan module;
the first current converting module outputs a first voltage, the second current converting module outputs a second voltage, and the first voltage is greater than the second voltage.
Preferably, the first converter module comprises:
the circuit comprises a first insulated gate bipolar transistor, a first diode, a second insulated gate bipolar transistor, a second diode, an inductor and a capacitor;
the output end of the energy storage device is connected with the collector of the first insulated gate bipolar transistor, the emitter of the first insulated gate bipolar transistor is respectively connected with the input end of the inductor and the cathode of the first diode, the output end of the inductor is respectively connected with the anode of the second diode and the collector of the second insulated gate bipolar transistor, the cathode of the second diode is connected with the anode of the capacitor, and the cathode of the capacitor is respectively connected with the emitter of the second insulated gate bipolar transistor and the anode of the first diode;
the collector of the first insulated gate bipolar transistor and the anode of the first diode jointly form the input end of the first current transformer module, and the cathode of the second diode and the emitter of the second insulated gate bipolar transistor jointly form the output end of the first current transformer module.
Preferably, the second converter module includes:
a first contactor and a DC/DC module;
the second end of the first contactor is connected with the input end of the DC/DC module;
the first end of the first contactor is an input end of the second current transformation module, and an output end of the DC/DC module is an output end of the second current transformation module.
Preferably, the output voltage of the DC/DC module is 24V.
Preferably, the power supply module includes:
the third diode, the super capacitor, the second contactor and the auxiliary power supply;
the cathode of the third diode is respectively connected with the anode of the super capacitor and the first end of the second contactor, the second end of the second contactor is connected with the input end of the auxiliary power supply, and the output end of the auxiliary power supply is connected with the cathode of the super capacitor;
and the anode of the third diode and the cathode of the super capacitor jointly form the input end of the power module.
Preferably, the device further comprises a voltage stabilizing module;
the input end of the voltage stabilizing module is connected with the output end of the first current transforming module, and the output end of the voltage stabilizing module is connected with the input end of the discharging module.
Preferably, the fan module includes:
n fans connected in parallel; wherein n is more than or equal to 2.
Preferably, the discharge module is a discharge resistor or a fan or a load.
Correspondingly, the invention also discloses an energy storage device discharging system which comprises the discharging device disclosed above.
In the present invention, a discharge device includes: the device comprises a first current transformation module, a second current transformation module, a power supply module, a fan module and a discharge module; the output end of the energy storage device is respectively connected with the input end of the first current conversion module and the input end of the second current conversion module, the output end of the first current conversion module is connected with the discharge module, and the output end of the second current conversion module is respectively connected with the input end of the power supply module and the input end of the fan module; the first current transformation module outputs a first voltage, the second current transformation module outputs a second voltage, and the first voltage is greater than the second voltage.
Therefore, in the invention, the first current transformation module outputting the high voltage can enable the discharging module to continuously and efficiently discharge, and the time required by discharging is greatly shortened. Moreover, the power module and the fan module in the second converter module outputting the low voltage also play a certain discharging role, wherein the power module enables the discharging device to discharge without an external power supply connected with an energy storage device, so that the movable discharging of the discharging device is realized, the cost is reduced, and the economic benefit is improved. On the other hand, the fan module not only shares certain power consumption, but also achieves the effect of radiating the discharging module, so that the discharging device is more stable in operation. Compare in prior art, to energy storage device discharge through constant resistance or adjustable resistance, at energy storage device's the in-process of discharging, discharge current can reduce gradually, when using constant resistance to discharge, discharge power can reduce gradually, and discharge time is longer, and when discharging through adjustable resistance, although discharge current can reach the constant value, discharge time shortens to some extent, but adjustable resistance's structure is complicated, and is bulky, is difficult for carrying. Therefore, the discharge device provided by the invention not only can shorten the discharge time of the energy storage device, but also is easy to carry, high in discharge efficiency and convenient for field workers to use. Correspondingly, the energy storage device discharging system disclosed by the invention also has the beneficial effects.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a structural diagram of a discharge device according to an embodiment of the present invention;
fig. 2 is a structural diagram of another discharge device provided in an embodiment of the present invention;
fig. 3 is a structural diagram of a power module in another discharging device according to an embodiment of the invention;
fig. 4 is a structural diagram of a fan module in another discharge device according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
An embodiment of the present invention discloses a discharge device, as shown in fig. 1, the discharge device includes:
a first current transformation module 101, a second current transformation module 102, a power supply module 103, a fan module 104 and a discharge module 105;
the output end of the energy storage device is respectively connected with the input end of the first current transformation module 101 and the input end of the second current transformation module 102, the output end of the first current transformation module 101 is connected with the discharge module 105, and the output end of the second current transformation module 102 is respectively connected with the input end of the power supply module 103 and the input end of the fan module 104;
the first current transformation module outputs a first voltage, the second current transformation module outputs a second voltage, and the first voltage is greater than the second voltage.
In this embodiment, first, the output end of the energy storage device is connected to the input end of the first current transforming module 101, and the output end of the first current transforming module 101 is connected to the discharging module; in this circuit, since the first converter module 101 can output a high voltage, it is able to ensure that the discharging current of the discharging module 105 is constant, that is, when the voltage of the energy storage device is higher than the rated voltage value, the first converter module 101 may adjust in real time to make the first converter module 101 in the buck mode, and then output the rated voltage to the discharging module 105 for discharging, when the voltage of the energy storage device is lower than the rated voltage value, the first converter module 102 may adjust in real time to make the first converter module 102 in the boost mode, and then output the rated voltage to the discharging module 105 for discharging, obviously, since the resistance value of the discharging module 105 is constant, the discharging current is also constant.
It should be noted that, in this embodiment, the power consumed by the discharging module of the discharging device is much larger than the power consumed by the power module and the fan module, so in order to reasonably utilize the electric energy, the voltage output by the first current transforming module is larger than the voltage output by the second current transforming module, specifically, how much the output voltages of the first current transforming module and the second current transforming module are set is required to achieve the purpose of practical application, and the present disclosure is not limited herein.
Meanwhile, in another circuit, the output end of the energy storage device is connected with the input end of the second current transformation module 102, and the output end of the second current transformation module 102 is respectively connected with the input end of the power supply module 103 and the input end of the fan module 104; because the second converter module 102 outputs a low voltage, the second converter module 102 can discharge the power module 103 on the one hand and also can discharge the fan module 104 on the other hand, wherein the fan module 104 not only consumes electric power, but also can dissipate heat for the discharge module 105 through the fan module 104, thereby avoiding a fault that the discharge module 105 generates excessive heat due to continuous discharge.
It is understood that there are various circuits that can enable the first current transforming module 101 and the second current transforming module 102 to output such current mode, and in practical operation, any circuit design is used for achieving the purpose of practical situation, and this is not limited herein. Of course, the power module 103, the fan module 104, and the discharge module 105 are all conventional circuit modules known to those skilled in the art, and are not listed here.
It should be noted that, in order to enable the first converter module 101 to output a more stable voltage value, a voltage stabilizing module 106 may be further added between the output end of the first converter module 101 and the input end of the discharging module 105 to enable the voltage output by the first converter module 101 to be more stable, so that the discharging module 105 can continuously and stably discharge.
Therefore, the first converter module outputting the high voltage can enable the discharging module to continuously and efficiently discharge, and the time required by discharging is greatly shortened. In addition, the power module and the fan module in the second converter module outputting low voltage also play a certain discharging role. The power module enables the discharging device to discharge without an external power supply connected with the energy storage device, movable discharging of the discharging device is achieved, cost is reduced, and economic benefits are improved. On the other hand, the fan module not only shares certain power consumption, but also achieves the effect of radiating the discharging module, so that the discharging device is more stable in operation. Compare in prior art, to energy storage device discharge through constant resistance or adjustable resistance, at energy storage device's the in-process of discharging, discharge current can reduce gradually, when using constant resistance to discharge, discharge power can reduce gradually, and discharge time is longer, and when discharging through adjustable resistance, although discharge current can reach the constant value, discharge time shortens to some extent, but adjustable resistance's structure is complicated, and is bulky, is difficult for carrying. Therefore, the discharge device provided by the invention not only can shorten the discharge time of the energy storage device, but also is easy to carry, high in discharge efficiency and convenient for field workers to use.
On the basis of the previous embodiment, the present embodiment gives specific limitations to each module in the foregoing embodiment, as shown in fig. 2.
As a preferred embodiment, the first converter module 101 includes:
a first insulated gate bipolar transistor Q1, a first diode V1, a second insulated gate bipolar transistor Q2, a second diode V2, an inductor L1 and a capacitor C1;
the output end of the energy storage device is connected with the collector of a first insulated gate bipolar transistor Q1, the emitter of the first insulated gate bipolar transistor Q1 is respectively connected with the input end of an inductor L1 and the cathode of a first diode V1, the output end of the inductor L1 is respectively connected with the anode of a second diode V2 and the collector of a second insulated gate bipolar transistor Q2, the cathode of the second diode V2 is connected with the anode of a capacitor C1, and the cathode of a capacitor C1 is respectively connected with the emitter of the second insulated gate bipolar transistor Q2 and the anode of the first diode V1;
the collector of the first igbt Q1 and the anode of the first diode V1 together form the input terminal of the first current transformer module 101, and the cathode of the second diode V2 and the emitter of the second igbt Q2 together form the output terminal of the first current transformer module 101.
In this embodiment, in order to increase the safety and stability of the circuit operation, a fuse FU1 is further connected to the output end of the energy storage device, and the energy storage device is connected to the first current transforming module 101 and the second current transforming module 102 through FU 1. It can be understood that various circuit diagrams of the first current transforming module 101 can be achieved, in this embodiment, a specific implementation is provided, and specifically, in this embodiment, the first current transforming module 101 includes two insulated gate bipolar transistors, two diodes, an inductor and a capacitor, so that conversion of the first current transforming module between the BUCK voltage-reducing circuit and the BOOST voltage-increasing circuit can be achieved by dynamically adjusting a duty ratio of a switching signal of the insulated gate bipolar transistor, so that the first current transforming module 101 can BOOST and reduce a voltage output by the energy storage device to output a constant voltage value to the discharging module, and the discharging module can continuously and stably discharge.
As a preferred embodiment, the second converter module 102 includes:
a first contactor K1 and a DC/DC module;
the second end of the first contactor K1 is connected with the input end of the DC/DC module;
the first end of the first contactor K1 is an input end of the second converter module, and the output end of the DC/DC module is an output end of the second converter module.
Specifically, the output voltage of the DC/DC module is 24V in this embodiment.
It is understood that in this embodiment, the voltage output by the energy storage device can be adjusted by using the DC/DC module, and specifically, in this embodiment, the voltage value discharged by the energy storage device is adjusted to DC24V by using the DC/DC module. With respect to the high voltage discharge of the first converter module 101, the second converter module 102 may output a low voltage to supply power to the power module 103 and the fan module 104. Obviously, through such a design, not only is a power supply system provided inside the discharge device, but also the fan module 104 is enabled to not only undertake a certain discharge function, and moreover, the fan module 104 is enabled to dissipate heat for the discharge module, so that the discharge device can better operate.
In this embodiment, the output voltage of the DC/DC module is set to 24V, but in practical application, it may be set to other parameter values, and the present invention is not limited thereto. Moreover, if the first converter module 101 and the second converter module 102 output more stable voltage values, the operating states of the first converter module 101 and the second converter module 102 may also be controlled by corresponding control systems. Specifically, the present invention is not limited to the above embodiments for the purpose of achieving practical operation.
Based on the above embodiment, as a preferred implementation, as shown in fig. 3, the power module 103 includes:
a third diode V3, a super capacitor C2, a second contactor K2 and an auxiliary power supply;
the cathode of the third diode V3 is respectively connected with the anode of the super capacitor C2 and the first end of the second contactor K2, the second end of the second contactor K2 is connected with the input end of an auxiliary power supply, and the output end of the auxiliary power supply is connected with the cathode of the super capacitor C2;
the anode of the third diode V3 and the cathode of the super capacitor C2 together form an input terminal of the power module 103.
It is understood that the power module 103 can be formed by various combinations of circuits, and in this embodiment, such a power module is specifically designed. It should be noted that, in this embodiment, the super capacitor is used because the super capacitor has a fast charging speed and a long cycle life, and does not need a special charging circuit and a controlled discharging circuit, and compared with a common battery, neither overcharge nor overdischarge will affect the life of the super capacitor. Compared with the prior art, the control power supply needs external access, is inconvenient to operate and has high cost. In this embodiment, a power module is designed in the discharging device, and during the discharging process of the discharging device, the electric quantity of the energy storage device can be recycled through the internal power module of the discharging device. Therefore, by the mode, the power module achieves a certain discharging effect, and the discharging device can discharge without an external power supply communicated with the energy storage device, so that movable discharging is realized, the cost is reduced, and the economic benefit is improved.
Based on the above embodiment, as a preferred implementation, the system further includes a voltage stabilizing module 106;
the input end of the voltage stabilizing module 106 is connected to the output end of the first current transforming module 101, and the output end of the voltage stabilizing module 106 is connected to the input end of the discharging module 105.
In this embodiment, a voltage stabilizing module 106 may be further added between the output end of the first converter module 101 and the input end of the discharging module 105, so that the first converter module 101 can still keep the output voltage constant under the condition that the input voltage, the load, the ambient temperature or the circuit parameter changes, and then the current passing through the voltage stabilizing module is stable, and further the discharging module can discharge with a constant current value, thereby achieving a better discharging effect.
Based on the above embodiment, as a preferred implementation, the fan module 104 includes:
n fans connected in parallel; wherein n is more than or equal to 2.
It can be understood that n fans are connected in parallel and connected into the discharging device, so that the fan module can play a role in consuming electric energy in the energy storage device, and meanwhile, the discharging device can be helped to perform better heat dissipation, thereby avoiding faults caused by excessive heat dissipation of the discharging device, and further improving the discharging efficiency of the discharging device.
Based on the above embodiment, as a preferred implementation, the discharging module 105 is a discharging resistor or a fan or a load.
It can be understood that the discharge module mainly functions to convert the electric energy in the energy storage device into heat energy to be released, and in this embodiment, some components with a constant discharge mode are used, that is, a discharge resistor or a fan, or some other load devices are used, in short, as long as the function of consuming the electric energy can be achieved, which is not limited herein.
Correspondingly, the invention also discloses an energy storage device discharging system which comprises the discharging device disclosed above.
It can be understood that the discharging device disclosed in the foregoing embodiment has the advantages of convenience in carrying, high power conversion of electric energy, and the like, so that in the energy storage device discharging system in this embodiment, by using the discharging device, not only can the discharging power of the energy storage device be greatly improved, but also the discharging device is easy to carry, and the user experience is greatly improved.
Finally, it should also be noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The above detailed description is made on the discharge device and the energy storage device discharge system provided by the present invention, and the principle and the implementation of the present invention are explained in the present document by applying specific examples, and the description of the above examples is only used to help understanding the method and the core idea of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Claims (8)
1. An electric discharge device, comprising:
the device comprises a first current transformation module, a second current transformation module, a power supply module, a fan module and a discharge module;
the output end of the energy storage device is respectively connected with the input end of the first current conversion module and the input end of the second current conversion module, the output end of the first current conversion module is connected with the discharge module, and the output end of the second current conversion module is respectively connected with the input end of the power supply module and the input end of the fan module;
the first current converting module outputs a first voltage, the second current converting module outputs a second voltage, and the first voltage is greater than the second voltage;
the power module includes:
the third diode, the super capacitor, the second contactor and the auxiliary power supply;
the cathode of the third diode is respectively connected with the anode of the super capacitor and the first end of the second contactor, the second end of the second contactor is connected with the input end of the auxiliary power supply, and the output end of the auxiliary power supply is connected with the cathode of the super capacitor;
and the anode of the third diode and the cathode of the super capacitor jointly form the input end of the power module.
2. The apparatus according to claim 1, wherein the first current transformer module comprises:
the circuit comprises a first insulated gate bipolar transistor, a first diode, a second insulated gate bipolar transistor, a second diode, an inductor and a capacitor;
the output end of the energy storage device is connected with the collector of the first insulated gate bipolar transistor, the emitter of the first insulated gate bipolar transistor is respectively connected with the input end of the inductor and the cathode of the first diode, the output end of the inductor is respectively connected with the anode of the second diode and the collector of the second insulated gate bipolar transistor, the cathode of the second diode is connected with the anode of the capacitor, and the cathode of the capacitor is respectively connected with the emitter of the second insulated gate bipolar transistor and the anode of the first diode;
the collector of the first insulated gate bipolar transistor and the anode of the first diode jointly form the input end of the first current transformer module, and the cathode of the second diode and the emitter of the second insulated gate bipolar transistor jointly form the output end of the first current transformer module.
3. The apparatus according to claim 1, wherein the second current transforming module comprises:
a first contactor and a DC/DC module;
the second end of the first contactor is connected with the input end of the DC/DC module;
the first end of the first contactor is an input end of the second current transformation module, and an output end of the DC/DC module is an output end of the second current transformation module.
4. The apparatus of claim 3, wherein the output voltage of the DC/DC module is 24V.
5. The apparatus of claim 1, further comprising a voltage regulation module;
the input end of the voltage stabilizing module is connected with the output end of the first current transforming module, and the output end of the voltage stabilizing module is connected with the input end of the discharging module.
6. The apparatus of any one of claims 1 to 5, wherein the fan module comprises:
n fans connected in parallel; wherein n is more than or equal to 2.
7. The device of any one of claims 1 to 5, wherein the discharge module is a discharge resistor or a fan or a load.
8. An energy storage device discharge system comprising a discharge apparatus according to any of claims 1 to 7.
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| CN201711115630.3A CN107742974B (en) | 2017-11-13 | 2017-11-13 | Discharging device and energy storage device discharging system |
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| CN109039028B (en) * | 2018-07-09 | 2020-06-16 | 华为技术有限公司 | Control circuit applied to power adapter and power adapter |
| CN109085784A (en) * | 2018-08-21 | 2018-12-25 | 中车株洲电力机车有限公司 | A kind of capacitor control circuit and a kind of electromagnetic type vacuum circuit breaker control system |
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| JPH0670488A (en) * | 1992-08-14 | 1994-03-11 | Nec Corp | Battery backed-up dc power supply |
| CN201447288U (en) * | 2009-06-05 | 2010-05-05 | 吴光跃 | Energy feedback, energy storage and power saving circuit for elevators |
| CN101741109A (en) * | 2008-11-18 | 2010-06-16 | 英业达股份有限公司 | Electric discharge device |
| JP2012175864A (en) * | 2011-02-23 | 2012-09-10 | Sanyo Electric Co Ltd | Power storage system |
| CN103094636A (en) * | 2011-10-27 | 2013-05-08 | 索尼公司 | Method of controlling discharge, battery pack, electrical storage system, electronic apparatus and electric vehicle |
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2017
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0670488A (en) * | 1992-08-14 | 1994-03-11 | Nec Corp | Battery backed-up dc power supply |
| CN101741109A (en) * | 2008-11-18 | 2010-06-16 | 英业达股份有限公司 | Electric discharge device |
| CN201447288U (en) * | 2009-06-05 | 2010-05-05 | 吴光跃 | Energy feedback, energy storage and power saving circuit for elevators |
| JP2012175864A (en) * | 2011-02-23 | 2012-09-10 | Sanyo Electric Co Ltd | Power storage system |
| CN103094636A (en) * | 2011-10-27 | 2013-05-08 | 索尼公司 | Method of controlling discharge, battery pack, electrical storage system, electronic apparatus and electric vehicle |
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