CN203554001U - Voltage equalizing device - Google Patents
Voltage equalizing device Download PDFInfo
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- CN203554001U CN203554001U CN201320649567.2U CN201320649567U CN203554001U CN 203554001 U CN203554001 U CN 203554001U CN 201320649567 U CN201320649567 U CN 201320649567U CN 203554001 U CN203554001 U CN 203554001U
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Abstract
The utility model discloses a voltage equalizing device. A DC/DC conversion module is in parallel connection with two ends of each energy storage power supply single body in an energy storage power supply; a control terminal of each DC/DC conversion module is connected with a voltage equalizing control circuit, voltage of each energy storage power supply single body is acquired by each voltage equalizing control circuit, and voltage values of two adjacent energy storage power supply single bodies are compared; and when the voltage values of the two adjacent energy storage power supply single bodies are different, the corresponding DC/DC conversion module is controlled to be turned on, and then electric energy of the energy storage power supply single body with relatively high voltage is transferred to the energy storage power supply single body with relatively low voltage, so that the voltages of all the energy storage power supply single bodies are the same. According to the scheme adopted by the voltage equalizing device, the DC/DC conversion modules are used for transferring electric energy in energy storage power supply single bodies with relatively high voltage to other energy storage power supply single bodies with relatively low voltage, so that the energy utilization rate is improved, the phenomenon that internal temperature of a large energy storage power supply is too high due to a switch resistance method can be avoided, and service lifetime of the energy storage power supply can be prolonged.
Description
Technical field
The application relates to accumulation power supply technical field, particularly relates to a kind of voltage balancing device that is applied to accumulation power supply.
Background technology
Accumulation power supply, with the feature of its green non-pollution, is come into people's life gradually, such as, the energy storage type rail traffic vehicles that the accumulation power supply of take is unique power, has realized green electric power supply traction.Accumulation power supply generally adopts ultracapacitor as energy-storage travelling wave tube, and super capacitor there will be the unbalanced phenomenon of monomer voltage when connection in series-parallel is used, and then affects stored energy capacitance, the useful life of super capacitor.
In prior art, adopt switch resistance method to solve the unbalanced phenomenon of above-mentioned monomer voltage, specifically as shown in Figure 1, the series arm that a resistance in parallel is connected with switch at electric capacity two ends, when the voltage on ultracapacitor surpasses load voltage value, the by-pass switch that ultracapacitor is corresponding is closed, charging current flows through from by-pass switch, make voltage on ultracapacitor no longer increase or climbing speed significantly declines, but, this kind of switch resistance method is by resistance and switch heating form releases heat, make accumulation power supply internal temperature increase, if accumulation power supply long-play will shorten the useful life of accumulation power supply under this kind of state.
Utility model content
For solving the problems of the technologies described above, the embodiment of the present application provides a kind of voltage balancing device, to realize, adopts non-energy consumption mode to solve the electric voltage equalization problem between accumulation power supply monomer, and technical scheme is as follows:
The embodiment of the present application provides a kind of voltage balancing device, is applied at least comprise n the accumulation power supply that accumulation power supply is monomer series-connected, comprising: voltage-equalizing control circuit and n DC/DC conversion module, and wherein, n is greater than 1 positive integer;
Described in first, the input of DC/DC conversion module is connected in parallel on the two ends of first accumulation power supply monomer, and output is connected in parallel on the two ends of the second accumulation power supply monomer adjacent with described first accumulation power supply monomer;
The input of n described DC/DC conversion module is connected in parallel on the two ends of n accumulation power supply monomer, and output is connected in parallel on the two ends of described first accumulation power supply monomer;
The n of a described voltage-equalizing control circuit output connects respectively the control end of described n DC/DC conversion module, when inconsistent for the voltage when two adjacent accumulation power supply monomers, control higher DC/DC conversion module conducting corresponding to accumulation power supply monomer of voltage, so that the higher accumulation power supply monomer of voltage is that the accumulation power supply monomer that voltage is lower charges by described DC/DC conversion module, until the voltage of n accumulation power supply monomer is all consistent.
Preferably, described DC/DC conversion module comprises: inverter circuit, booster circuit, rectification circuit, inverter control signal produce circuit and synchronous rectification signal produces circuit;
The input of described inverter circuit is as the input of described DC/DC conversion module, the output of described inverter circuit connects the input of described booster circuit, the control end of described inverter circuit connects the output that described inverter control signal produces circuit, and described inverter control signal produces the inverter control signal of circuit output for controlling the operating state of described inverter circuit;
The output of described booster circuit connects the input of described rectification circuit, and the output of described rectification circuit is as the output of described DC/DC conversion module, and the control end of described rectification circuit connects the output that described rectified signal produces circuit;
The input of described rectified signal generation circuit connects the output of described voltage-equalizing control circuit, is used for controlling the rectified signal of described rectification circuit operating state according to the control signal generation of described voltage-equalizing control circuit output;
The input of described inverter control signal generation circuit connects the output of described voltage-equalizing control circuit, for when receiving the control signal of described voltage-equalizing control circuit output, produce the inverter control signal of controlling the switch tube working status in described inverter circuit.
Preferably, described DC/DC conversion module also comprises power module;
The output of described power module connects respectively inverter control signal and produces the feeder ear of circuit and the feeder ear that described rectified signal produces circuit, the input of described power module connects corresponding accumulation power supply monomer, the control end of described power module, as the control end of described DC/DC conversion module, controls according to the control signal of described voltage-equalizing control circuit output the power supply state that described inverter control signal produces circuit and described rectified signal generation circuit.
Preferably, described inverter control signal produces circuit, comprising: comparison module and signal generator module;
Described comparison module, for described DC/DC conversion module output charging current and the predetermined current relatively collecting;
Described signal generator module, produces corresponding inverter control signal for the comparative result according to described comparison module.
Preferably, described voltage-equalizing control circuit specifically comprises: acquisition module, comparison module, control signal generation module;
Described acquisition module, for gathering the voltage of accumulation power supply monomer;
Described comparison module, for comparing the voltage of two adjacent accumulation power supply monomers;
Described control signal generation module, when inconsistent for the voltage of two accumulation power supply monomers when adjacent, produces the control signal of controlling the DC/DC conversion module conducting that accumulation power supply monomer that voltage is higher is corresponding.
Preferably, described inverter circuit is push-pull inverter circuit, and described booster circuit is high frequency transformer, the bridge rectifier of described rectification circuit for consisting of metal-oxide semiconductor fieldeffect transistor.
Preferably, described accumulation power supply monomer is ultracapacitor or rechargeable battery pack.
The technical scheme being provided from above the embodiment of the present application, described voltage balancing device, the two ends of each the accumulation power supply monomer in accumulation power supply are a DC/DC conversion module in parallel all, the control end of each DC-DC module all connects voltage-equalizing control circuit, voltage-equalizing control circuit gathers the voltage of accumulation power supply monomer, and the magnitude of voltage of two more adjacent accumulation power supply monomers, when the magnitude of voltage of adjacent two accumulation power supply monomers is inconsistent, control the conducting of corresponding DC/DC conversion module, thereby make the electric energy transfer of the accumulation power supply monomer that voltage is higher to the lower accumulation power supply monomer of voltage, finally make the voltage of all accumulation power supply monomers equate.All pressures scheme that the application provides adopts DC/DC conversion module as pressure module, by the electric energy transfer in the higher accumulation power supply monomer of voltage in other accumulation power supply monomers, be not that electric energy transform into heat energy is consumed, the method for equalizing voltage that belongs to non-energy consumption type, improved capacity usage ratio, avoided switch resistance method to cause that the too high phenomenon of large accumulation power supply internal temperature occurs, and has extended the useful life of accumulation power supply.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present application or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, the accompanying drawing the following describes is only some embodiment that record in the application, 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 a kind of voltage balancing device of the prior art;
Fig. 2 a is the structural representation of a kind of voltage balancing device of the embodiment of the present application;
Fig. 2 b is the structural representation of the voltage-equalizing control circuit of the embodiment of the present application;
Fig. 3 a is the structural representation of a kind of DC/DC conversion module of the embodiment of the present application;
Fig. 3 b is the structural representation that a kind of inverter control signal of the embodiment of the present application produces circuit;
Fig. 4 is the structural representation of the another kind of DC conversion module of the embodiment of the present application;
Fig. 5 is the schematic flow sheet of a kind of voltage balancing method of the embodiment of the present application.
Embodiment
In order to make those skilled in the art person understand better the technical scheme in the application, below in conjunction with the accompanying drawing in the embodiment of the present application, technical scheme in the embodiment of the present application is clearly and completely described, obviously, described embodiment is only the application's part embodiment, rather than whole embodiment.Embodiment based in the application, those of ordinary skills are not making the every other embodiment obtaining under creative work prerequisite, all should belong to the scope of the application's protection.
Refer to Fig. 2 a and Fig. 2 b, Fig. 2 a shows the structural representation of a kind of voltage balancing device of the embodiment of the present application; Fig. 2 b shows the structural representation of voltage-equalizing control circuit.
As shown in Figure 2 a, described voltage balancing device is applied in accumulation power supply, and described accumulation power supply comprises n accumulation power supply monomer (C1, C2 ... Cn) series arm of series connection; Described voltage balancing device comprises voltage-equalizing control circuit 100 and n DC/DC conversion module 1,2 ... ..n, wherein, n is greater than 1 positive integer.
Two inputs of DC/DC conversion module 1 are parallel to the two ends of the first accumulation power supply monomer C1, and output is parallel to the two ends of the second accumulation power supply monomer C2, and control end connects voltage-equalizing control circuit 100; The input of DC/DC conversion module 2 is parallel to the two ends of the second accumulation power supply monomer C2, and output is parallel to the two ends of the 3rd accumulation power supply monomer C3, and control end connects voltage-equalizing control circuit 100; The like, the input of n accumulation power supply monomer Cn is parallel to the two ends of n accumulation power supply monomer Cn, and output is parallel to the two ends of the first accumulation power supply monomer C1, and control end connects voltage-equalizing control circuit 100.
Voltage-equalizing control circuit 100 gathers the voltage of accumulation power supply monomer, and whether the voltage value of two more adjacent accumulation power supply monomers is consistent, if inconsistent, produce the control signal that triggers the conducting of corresponding DC/DC conversion module, so that the higher accumulation power supply monomer of voltage value charges to the lower accumulation power supply monomer of voltage value, the like, until the voltage value of all accumulation power supply monomers all equates.
Concrete, as shown in Figure 2 b, voltage-equalizing control circuit 100 can comprise acquisition module 101, comparison module 102, control signal generation module 103.
During concrete enforcement, acquisition module and comparison module can be realized by AD sampling A/D chip
Control signal generation module 103, when inconsistent for the voltage of two accumulation power supply monomers when adjacent, produces the control signal of controlling the DC/DC conversion module conducting that accumulation power supply monomer that voltage is higher is corresponding.
With a concrete example, the voltage balancing device of the present embodiment is elaborated below.
Suppose that voltage value that voltage-equalizing control circuit detects the first accumulation power supply monomer C1 is greater than the voltage value of the second accumulation power supply monomer, produce the control signal of controlling the conducting of DC/DC die change piece, now, the first accumulation power supply monomer C1 is transferred to the electric energy of self in the second accumulation power supply monomer by DC/DC conversion module, change in voltage along with the first accumulation power supply monomer C1 and the second accumulation power supply monomer C2, the voltage difference of the first accumulation power supply monomer C1 and n accumulation power supply monomer Cn changes thereupon, voltage difference between the second accumulation power supply monomer C2 and the 3rd accumulation power supply monomer C3 also changes thereupon, thereby trigger n DC/DC conversion module n and 3 conductings of DC/DC conversion module, the like, n all conducting of DC/DC conversion module of final triggering, make the magnitude of voltage of n accumulation power supply monomer all identical.
The ON time interval of n DC/DC conversion module is determined by the voltage acquisition time of voltage-equalizing control circuit and the generation time of control signal, and the time interval is Millisecond normally, therefore, once there be the lower voltage of an accumulation power supply monomer, all DC/DC conversion modules are conducting simultaneously almost, forms a path that shifts energy to the minimum accumulation power supply of magnitude of voltage.
It should be noted that, the accumulation power supply monomer in the present embodiment be take ultracapacitor and is described as example, and certainly, accumulation power supply monomer can also be chargeable battery.
The voltage balancing device that the present embodiment provides, adopt DC/DC conversion module as pressure module, compare with existing switch resistance method, the application's pressure module is not by electric energy transform into heat energy, but by electric energy transfer in other accumulation power supply monomers, belong to the method for equalizing voltage of non-energy consumption type, improved capacity usage ratio, avoided switch resistance method to cause that the too high phenomenon of large accumulation power supply internal temperature occurs, and has extended the useful life of accumulation power supply.
Refer to Fig. 3 a and Fig. 3 b, Fig. 3 a shows the structural representation of the DC/DC conversion module that the application provides, and Fig. 3 b shows the structural representation that inverter control signal produces circuit.
As shown in Figure 3 a, described DC/DC conversion module comprises: inverter circuit 301, booster circuit 302, rectification circuit 303, inverter control signal produce circuit 304, rectified signal produces circuit 305.
The input of inverter circuit 301 is as the input of DC/DC conversion module, the two ends that connect corresponding accumulation power supply monomer, output connects the input of booster circuit 302, the output of booster circuit 302 connects the input of rectification circuit 303, and the output of rectification circuit 303 is parallel to the two ends of adjacent next accumulation power supply monomer as the output of DC/DC conversion module;
Preferably, inverter circuit adopts push-pull inverter circuit to realize, and booster circuit is realized by high frequency transformer, and rectification circuit is realized by the bridge rectifier consisting of metal-oxide-semiconductor.
Wherein, by high frequency booster circuit, the voltage signal of accumulation power supply monomer is boosted after processing, improved the charging current for next adjacent accumulation power supply monomer, thereby improved charge efficiency, meanwhile, high frequency transformer also plays the effect into the electrical isolation between accumulation power supply monomer.
The rectification circuit that the application provides has replaced diode with metal-oxide-semiconductor, because the conducting internal resistance of metal-oxide-semiconductor is less, therefore, has reduced the power consumption of DC/DC module, thereby has improved the efficiency of DC/DC module.
Inverter control signal produces the control end of the output connection inverter circuit 301 of circuit 304, produce for controlling the inverter control signal of the operating state of inverter circuit and offer inverter circuit 301, concrete, inverter control signal produces circuit 304 and can realize by SG3525 chip.
The output that rectified signal produces circuit 305 connects the control end of rectification circuit 303, produces and controls the rectified signal of rectification circuit in rectification state and offer rectification circuit 303.
As shown in Figure 3 b, described rectified signal generation circuit can comprise comparison module 3051 and signal generator module 3052.
During concrete enforcement, rectified signal produces circuit and can realize by UC27323D chip.
The course of work of the DC/DC conversion module that the present embodiment provides is as follows:
Inverter control signal produces circuit 304 and rectified signal and produces after circuit 305 receives the control signal that voltage-equalizing control circuit produces and start working, be that inverter control signal produces circuit and produces inverter control signal and offer inverter circuit 301 and make inverter circuit in inverter mode, meanwhile, rectified signal produces circuit 305 and produces rectified signals and offer rectification circuit 303 and make rectification circuit in rectification state;
Refer to Fig. 4, show the structural representation of the another kind of DC/DC module of the embodiment of the present application, do not pass through with the DC/DC module shown in Fig. 3, also comprise power module 306.
The input of power module 306 links the two ends of corresponding accumulation power supply monomer, and output connects respectively inverter control signal and produces the feeder ear of circuit and the feeder ear that rectified signal produces circuit, and the control end of power module 306 connects voltage-equalizing control circuit.
Power module is according to the control signal of voltage-equalizing control circuit output, control the power supply state that inverter control signal produces circuit and rectified signal generation circuit, concrete, when the control signal of voltage-equalizing control circuit output is effective, power module produces circuit operating voltage is provided for inverter control signal produces circuit and rectified signal, so that inverter control signal produces circuit and rectified signal generation circuit can normally be worked, when the control signal of voltage-equalizing control circuit output is invalid, power module can not produce circuit operating voltage is provided for inverter control signal produces circuit and rectified signal, thereby reduced electric energy loss.
It should be noted that, the course of work of other the circuit identical with title in Fig. 4 is identical with the circuit shown in Fig. 4, repeats no more herein.
Corresponding to the embodiment of above-mentioned voltage balancing device, the application also provides a kind of voltage balancing method.
Refer to Fig. 5, show the schematic flow sheet of a kind of voltage balancing method of the embodiment of the present application.
Described method is applied in above-mentioned voltage balancing device, described voltage balancing device comprises DC/DC module, DC/DC module is defeated enters the two ends that end is connected in parallel on corresponding accumulation power supply monomer, output is parallel to the two ends of adjacent next accumulation power supply monomer, wherein, DC/DC conversion module comprises that inverter circuit, booster circuit, rectification circuit, modulated signal producing circuit, rectified signal produce circuit.
Said method comprising the steps of:
501, the voltage signal of collection accumulation power supply monomer;
Specifically can adopt the voltage signal of A/D sampling A/D chip Real-time Collection accumulation power supply monomer.
502, the numerical value of the voltage signal of two more adjacent accumulation power supply monomers, obtains comparative result;
503, when obtaining the not identical comparative result of the numerical value of two voltage signals, produce the control signal of controlling the conducting of corresponding DC/DC conversion module, so that the higher accumulation power supply monomer of voltage is to the lower accumulation power supply monomer charging of adjacent next voltage, until the magnitude of voltage of all accumulation power supply monomers is identical.
Concrete, the process of controlling the conducting of corresponding DC/DC conversion module comprises:
The control signal producing according to described voltage-equalizing control circuit, controls described inverter control signal and produces the inverter control signal of the described inverter circuit of circuit generation control in inverter mode.
Concrete, the process that inverter control signal produces described inverter control signal comprises:
Gather the charging current of described DC/DC conversion module, and described charging current and predetermined current are compared, obtain comparative result;
When obtaining described charging current and described predetermined current when inconsistent, produce the control signal that changes the operating state of switching tube in described inverter circuit, so that the charging current of described DC/DC conversion module output reaches described predetermined current.
Meanwhile, the control signal producing according to described voltage-equalizing control circuit, controls described rectified signal and produces the rectified signal of the described rectification circuit of circuit generation control in rectification state.
The present embodiment provides voltage balancing method, adopt DC/DC conversion modular manner, by the electric energy transfer of the higher accumulation power supply monomer of voltage to the lower accumulation power supply monomer of voltage, the method for equalizing voltage that belongs to non-energy consumption type, compare with existing switch resistance method, improve capacity usage ratio, avoided switch resistance method to cause that the too high phenomenon of large accumulation power supply internal temperature occurs, and has extended the useful life of accumulation power supply.
Each embodiment in this specification all adopts the mode of going forward one by one to describe, between each embodiment identical similar part mutually referring to, each embodiment stresses is the difference with other embodiment.
It should be noted that, in this article, relational terms such as the first and second grades is only used for an entity or operation to separate with another entity or operating space, and not necessarily requires or imply and between these entities or operation, have the relation of any this reality or sequentially.And, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thereby the process, method, article or the equipment that make to comprise a series of key elements not only comprise those key elements, but also comprise other key elements of clearly not listing, or be also included as the intrinsic key element of this process, method, article or equipment.The in the situation that of more restrictions not, the key element being limited by statement " comprising ... ", and be not precluded within process, method, article or the equipment that comprises described key element and also have other identical element.
The above is only the application's embodiment; it should be pointed out that for those skilled in the art, do not departing under the prerequisite of the application's principle; can also make some improvements and modifications, these improvements and modifications also should be considered as the application's protection range.
Claims (7)
1. a voltage balancing device, is applied at least comprise n the accumulation power supply that accumulation power supply is monomer series-connected, it is characterized in that, comprising: voltage-equalizing control circuit and n DC/DC conversion module, and wherein, n is greater than 1 positive integer;
Described in first, the input of DC/DC conversion module is connected in parallel on the two ends of first accumulation power supply monomer, and output is connected in parallel on the two ends of the second accumulation power supply monomer adjacent with described first accumulation power supply monomer;
The input of n described DC/DC conversion module is connected in parallel on the two ends of n accumulation power supply monomer, and output is connected in parallel on the two ends of described first accumulation power supply monomer;
The n of a described voltage-equalizing control circuit output connects respectively the control end of described n DC/DC conversion module, when inconsistent for the voltage when two adjacent accumulation power supply monomers, control higher DC/DC conversion module conducting corresponding to accumulation power supply monomer of voltage, so that the higher accumulation power supply monomer of voltage is that the accumulation power supply monomer that voltage is lower charges by described DC/DC conversion module, until the voltage of n accumulation power supply monomer is all consistent.
2. voltage balancing device according to claim 1, is characterized in that, described DC/DC conversion module comprises: inverter circuit, booster circuit, rectification circuit, inverter control signal produce circuit and synchronous rectification signal produces circuit;
The input of described inverter circuit is as the input of described DC/DC conversion module, the output of described inverter circuit connects the input of described booster circuit, the control end of described inverter circuit connects the output that described inverter control signal produces circuit, and described inverter control signal produces the inverter control signal of circuit output for controlling the operating state of described inverter circuit;
The output of described booster circuit connects the input of described rectification circuit, and the output of described rectification circuit is as the output of described DC/DC conversion module, and the control end of described rectification circuit connects the output that described rectified signal produces circuit;
The input of described rectified signal generation circuit connects the output of described voltage-equalizing control circuit, is used for controlling the rectified signal of described rectification circuit operating state according to the control signal generation of described voltage-equalizing control circuit output;
The input of described inverter control signal generation circuit connects the output of described voltage-equalizing control circuit, for when receiving the control signal of described voltage-equalizing control circuit output, produce the inverter control signal of controlling the switch tube working status in described inverter circuit.
3. voltage balancing device according to claim 2, is characterized in that, described DC/DC conversion module also comprises power module;
The output of described power module connects respectively inverter control signal and produces the feeder ear of circuit and the feeder ear that described rectified signal produces circuit, the input of described power module connects corresponding accumulation power supply monomer, the control end of described power module, as the control end of described DC/DC conversion module, controls according to the control signal of described voltage-equalizing control circuit output the power supply state that described inverter control signal produces circuit and described rectified signal generation circuit.
4. according to the voltage balancing device described in claim 2 or 3, it is characterized in that, described inverter control signal produces circuit, comprising: comparison module and signal generator module;
Described comparison module, for described DC/DC conversion module output charging current and the predetermined current relatively collecting;
Described signal generator module, produces corresponding inverter control signal for the comparative result according to described comparison module.
5. according to the voltage balancing device described in claim 1-3 any one, it is characterized in that, described voltage-equalizing control circuit specifically comprises: acquisition module, comparison module, control signal generation module;
Described acquisition module, for gathering the voltage of accumulation power supply monomer;
Described comparison module, for comparing the voltage of two adjacent accumulation power supply monomers;
Described control signal generation module, when inconsistent for the voltage of two accumulation power supply monomers when adjacent, produces the control signal of controlling the DC/DC conversion module conducting that accumulation power supply monomer that voltage is higher is corresponding.
6. according to the voltage balancing device described in claim 2 or 3, it is characterized in that, described inverter circuit is push-pull inverter circuit, and described booster circuit is high frequency transformer, the bridge rectifier of described rectification circuit for consisting of metal-oxide semiconductor fieldeffect transistor.
7. voltage balancing device according to claim 1, is characterized in that, described accumulation power supply monomer is ultracapacitor or rechargeable battery pack.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201320649567.2U CN203554001U (en) | 2013-10-21 | 2013-10-21 | Voltage equalizing device |
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| CN201320649567.2U CN203554001U (en) | 2013-10-21 | 2013-10-21 | Voltage equalizing device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103516030A (en) * | 2013-10-21 | 2014-01-15 | 南车株洲电力机车有限公司 | Voltage equalizing device and method |
| CN106026662A (en) * | 2016-06-07 | 2016-10-12 | 深圳润泽创新能源科技有限公司 | Electromagnetic induction voltage-sharing apparatus |
| CN112043160A (en) * | 2019-06-05 | 2020-12-08 | 佛山市美的清湖净水设备有限公司 | Instant heating type water dispenser and control method and computer readable storage medium thereof |
| CN113676058A (en) * | 2021-07-29 | 2021-11-19 | 浙江大学杭州国际科创中心 | Voltage-sharing device of power conversion module and power conversion system |
-
2013
- 2013-10-21 CN CN201320649567.2U patent/CN203554001U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103516030A (en) * | 2013-10-21 | 2014-01-15 | 南车株洲电力机车有限公司 | Voltage equalizing device and method |
| CN106026662A (en) * | 2016-06-07 | 2016-10-12 | 深圳润泽创新能源科技有限公司 | Electromagnetic induction voltage-sharing apparatus |
| CN112043160A (en) * | 2019-06-05 | 2020-12-08 | 佛山市美的清湖净水设备有限公司 | Instant heating type water dispenser and control method and computer readable storage medium thereof |
| CN113676058A (en) * | 2021-07-29 | 2021-11-19 | 浙江大学杭州国际科创中心 | Voltage-sharing device of power conversion module and power conversion system |
| CN113676058B (en) * | 2021-07-29 | 2023-09-05 | 浙江大学杭州国际科创中心 | Voltage equalizing device of power conversion module and power conversion system |
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