WO2013117027A1 - 电池均衡电路 - Google Patents
电池均衡电路 Download PDFInfo
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- WO2013117027A1 WO2013117027A1 PCT/CN2012/072673 CN2012072673W WO2013117027A1 WO 2013117027 A1 WO2013117027 A1 WO 2013117027A1 CN 2012072673 W CN2012072673 W CN 2012072673W WO 2013117027 A1 WO2013117027 A1 WO 2013117027A1
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- WIPO (PCT)
- Prior art keywords
- control switch
- battery unit
- battery
- equalization
- circuit
- Prior art date
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
- H02J7/0014—Circuits for equalisation of charge between batteries
- H02J7/0016—Circuits for equalisation of charge between batteries using shunting, discharge or bypass circuits
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
- H02J7/0014—Circuits for equalisation of charge between batteries
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
- H02J7/0014—Circuits for equalisation of charge between batteries
- H02J7/0019—Circuits for equalisation of charge between batteries using switched or multiplexed charge circuits
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/007—Regulation of charging or discharging current or voltage
- H02J7/00712—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters
- H02J7/00714—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters in response to battery charging or discharging current
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
- B60L58/18—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries of two or more battery modules
- B60L58/22—Balancing the charge of battery modules
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/396—Acquisition or processing of data for testing or for monitoring individual cells or groups of cells within a battery
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
- H01M2010/4271—Battery management systems including electronic circuits, e.g. control of current or voltage to keep battery in healthy state, cell balancing
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2207/00—Indexing scheme relating to details of circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J2207/20—Charging or discharging characterised by the power electronics converter
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
Definitions
- the present invention relates to battery management techniques, and more particularly to a battery equalization circuit for use in a battery management system.
- a battery pack usually includes several battery cells connected in series, and the imbalance between these battery cells due to differences in charging state, impedance, and temperature characteristics of each battery cell. This imbalance will reduce the capacity and life of the entire battery pack. Therefore, it is necessary to adjust the battery pack in the battery pack to maintain the capacity of the battery pack and extend the life of the battery pack.
- FIG. 1 is a schematic diagram of a conventional battery equalization circuit.
- the existing battery equalization circuit 100 is an active equalization circuit designed based on an inductor, and includes a battery unit 110, a battery unit 120, an inductor 130, a control switch 140, and a control switch 150.
- the battery unit 110, the inductor 130 and the control switch 140 form a first loop
- the battery unit 120, the inductor 130 and the control switch 150 form a second loop.
- the control switch 140 and the control switch 150 are pulse-modulated with a pair of mutually complementary pulse widths (pulse-width)
- the modulation, PWM) signal is controlled to turn on and off in turn.
- the magnitude of the control equalization current can be adjusted, thereby transferring the energy in the battery unit 110 to the battery unit 120 by using the inductor 130. Alternatively, the energy in the battery unit 120 is transferred to the battery unit 110.
- the existing battery equalization circuit 100 is simple in structure and can provide a large equalization current, but since the equalization current is affected by various factors such as temperature variation, battery cell voltage variation, device variation, line resistance, etc., even PWM The duty cycle of the signal is constant, and the equalization current still has a large difference, making the equalization effect of the entire circuit unsatisfactory. In addition, in some cases, the equalization current in the existing battery equalization circuit 100 may exceed the rating of the device, posing a risk. Therefore, in order to improve the above problems, it is urgent to develop a new battery equalization circuit.
- an embodiment of the present invention discloses a battery equalization circuit including a first battery unit, a second battery unit, a current detecting resistor, a balanced inductor, a first control switch, a second control switch, and a feedback control circuit, wherein the first battery unit and the second battery unit are connected in series, and the first battery unit, the current detecting resistor, the equalizing inductor and the first control switch are electrically connected to each other to form a first loop, and The second battery unit, the current detecting resistor, the equalizing inductor and the second control switch are electrically connected to each other to form a second loop, and the feedback control circuit is a pulse width modulation control circuit or a pulse frequency modulation control based on an error comparator a circuit parallel to the current-sense resistor to detect a voltage drop of the current-sense resistor and to send a control signal to the first control switch and the second control switch to be between the first loop and the second loop Switching is performed so that the equalization current is
- the first control switch and the second control switch are respectively any two of an NMOS transistor, a PMOS transistor, and a Schottky diode.
- an embodiment of the present invention further discloses a battery equalization circuit including a first battery unit, a second battery unit, a current detecting resistor, a balanced inductor, a first control switch, and a second control switch. And a feedback control circuit, wherein the first battery unit and the second battery unit are connected in series, the first battery unit, the current detecting resistor, the equalizing inductor and the first control switch are electrically connected to each other to form a first loop, The second battery unit, the current detecting resistor, the equalizing inductor and the second control switch are electrically connected to each other to form a second loop, and the feedback control circuit is connected in parallel with the current detecting resistor to detect the voltage of the current detecting resistor.
- a reference voltage source and a hysteresis comparator wherein the reference voltage source is configured to provide a reference voltage and electrically connected to the first end of the current-sense resistor and the negative input terminal of the hysteresis comparator, the hysteresis
- the positive input end of the comparator is electrically connected to the second end of the current detecting resistor, and the output end of the hysteresis comparator is used as an output end of the feedback control circuit to output the control signal To the first control switch and said second switch is controlled to switch between the first circuit and the second circuit, so that the equalization current is substantially constant.
- the first control switch and the second control switch are respectively an NMOS transistor and a Schottky diode.
- the first control switch and the second control switch are respectively a PMOS transistor and a Schottky diode.
- the first control switch and the second control switch are respectively an NMOS transistor and a PMOS transistor.
- an embodiment of the present invention further discloses a battery equalization circuit including a first battery unit, a second battery unit, a current detecting resistor, a balanced inductor, a first control switch, and a second control switch. And a feedback control circuit, wherein the first battery unit and the second battery unit are connected in series, the first battery unit, the current detecting resistor, the equalizing inductor and the first control switch are electrically connected to each other to form a first loop, The second battery unit, the current detecting resistor, the equalizing inductor and the second control switch are electrically connected to each other to form a second loop, and the feedback control circuit is connected in parallel with the current detecting resistor to detect the voltage of the current detecting resistor. And a control signal is sent to the first control switch and the second control switch to switch between the first loop and the second loop, so that the equalization current is substantially constant.
- the feedback control circuit includes a reference voltage source and a hysteresis comparator, wherein the reference voltage source is used to provide a reference voltage and is electrically connected to the first end of the current-sense resistor and the hysteresis Returning to the negative input end of the comparator, the positive input end of the hysteresis comparator is electrically connected to the second end of the current detecting resistor, and the output end of the hysteresis comparator is used as an output end of the feedback control circuit to output the control signal.
- the feedback control circuit is a pulse width modulation control circuit or a pulse frequency modulation control circuit based on an error comparator.
- the first control switch and the second control switch are an NMOS transistor and a Schottky diode, respectively.
- the first control switch and the second control switch are respectively a PMOS transistor and a Schottky diode.
- the first control switch and the second control switch are an NMOS transistor and a PMOS transistor, respectively.
- the first battery unit and the second battery unit are electrically connected to the equalization inductor through the current detecting resistor.
- the equalization inductor is electrically connected to the first control switch and the second control switch respectively through the current detecting resistor.
- the battery equalization circuit of the present invention can utilize a feedback control circuit to collect the voltage drop across the current-sense resistor, thereby automatically adjusting the duty cycle of the control signal such that its equalization current is substantially constant, so that the entire battery equalization circuit Achieve the best balance, and avoid the risk that the equalization current exceeds the device's rated value, thus overcoming the shortcomings of the existing battery equalization circuit.
- 1 is a schematic diagram of a conventional battery equalization circuit
- FIG. 2 is a schematic diagram of a battery equalization circuit according to a preferred embodiment of the present invention.
- FIG. 3 is a detailed schematic diagram of the battery equalization circuit shown in FIG. 2;
- FIG. 4 is a schematic diagram of the principle of the hysteresis comparator shown in FIG.
- the battery equalization circuit 200 of the present invention is also an active equalization circuit designed based on an inductor, and includes a first battery unit 210, a second battery unit 220, a current detecting resistor 230, a balanced inductor 240, and a first control. Switch 250, second control switch 260, and feedback control circuit 270.
- the first battery unit 210 and the second battery unit 220 are connected in series, and the first battery unit 210, the current detecting resistor 230, the equalizing inductor 240 and the first control switch 250 form a first loop, and the second battery unit 220, the second battery unit 220 Current resistor 230, equalization inductor 240, and second control switch 260 form a second loop.
- the feedback control circuit 270 is connected in parallel to the current detecting resistor 230 to detect the voltage drop of the current detecting resistor 230, and sends a control signal to the first control switch 250 and the second control switch 260 to perform between the first loop and the second loop, respectively. Switching, thereby controlling the voltage drop across the current-sense resistor 230 to a fixed value, so that its equalization current is substantially constant.
- FIG. 3 is a detailed schematic diagram of the battery equalization circuit shown in FIG. 2.
- the feedback control circuit 270 includes a reference voltage source 271 and a hysteresis comparator 272.
- the reference voltage source 271 is used to provide the reference voltage VREF, and is electrically connected to the first end of the current detecting resistor 230 and the negative input terminal of the hysteresis comparator 272, and the positive input terminal of the hysteresis comparator 272 is electrically connected.
- the second end of the current-sense resistor 230 and the output of the hysteresis comparator 272 serves as an output of the feedback control circuit 270 to output a control signal CS.
- the first control switch 250 and the second control switch 260 can be implemented by an NMOS transistor and a Schottky diode, respectively, and receive control of the control signal CS outputted by the output of the hysteresis comparator 272.
- the first loop is turned on or the second loop is turned on to switch between the first loop and the second loop.
- FIG. 4 is a schematic diagram of the principle of the hysteresis comparator shown in FIG. The operation of the battery equalization circuit of the present invention will be specifically described below.
- FIG. 2-4 when the voltage on the second terminal of the current detecting resistor 230 rises, until it rises to the positive threshold voltage +VHYS of the hysteresis comparator 272, that is, the hysteresis comparator 272
- the voltage drop across the current-sense resistor 230 is -VREF+VHYS, and the control signal CS outputted by the output of the hysteresis comparator 272 is switched.
- the NMOS transistor 250 as the control switch is turned on, and the first battery cell 210, the current detecting resistor 230, the equalizing inductor 240, and the first loop formed by the NMOS transistor 250 as the control switch are turned on.
- the voltage on the second terminal of the current-sense resistor 230 drops until it drops to the negative threshold voltage -VHYS of the hysteresis comparator 272, that is, the voltage on the positive input terminal of the hysteresis comparator 272 drops to a hysteresis.
- the voltage drop across the current-sense resistor 230 is -VREF-VHYS, and the control signal CS outputted from the output of the hysteresis comparator 272 is switched to the negative polarity, thus acting as a control switch
- the NMOS transistor 250 is turned off, that is, the first loop is turned off; at this time, the Schottky diode 260 as the control switch is turned on, and the current in the equalizing inductor 240 can be freewheeled through the Schottky diode 260, and then the second battery unit 220 is inspected.
- the flow resistor 230, the equalization inductor 240, and the second loop formed by the Schottky diode 260 as a control switch are turned on.
- the above process continually circulates, that is, the first loop and the second loop are alternately turned on, thereby transferring electric energy between the first battery unit 210 and the second battery unit 220.
- the voltage drop across the current-sense resistor 230 is either -VREF+VHYS to turn on the first loop, or -VREF-VHYS to turn on the second loop, and the reference voltage -VREF provided by the reference voltage source 271 is far greater.
- the threshold voltage VHYS of the comparator 272 is hysteresis, so the feedback control circuit 270 can stabilize the voltage drop across the current-sense resistor 230 substantially at a fixed value VREF, and the equalization current flowing through the current-sense resistor 230 and the equalization inductor 240 is substantially constant. At VREF/R, where R is the resistance of the current-sense resistor 230.
- the battery equalization circuit 200 of the present invention can utilize the feedback control circuit 270 to collect the voltage drop across the current-sense resistor 230, thereby automatically adjusting the duty cycle of the control signal CS such that its equalization current is substantially constant, so that the entire battery is equalized.
- the circuit 200 achieves an optimum equalization effect and avoids the risk of the equalization current exceeding the device rating, thereby overcoming the drawbacks of the existing battery equalization circuit.
- the feedback control circuit 270 is implemented by the hysteresis comparison control method in the above embodiment, those skilled in the art can understand that the feedback control circuit 270 of the present invention can also utilize the pulse width modulation based on the error amplifier ( The PWM) control circuit or pulse frequency modulation (PFM) control circuit is implemented.
- the PWM error amplifier
- PFM pulse frequency modulation
- the first control switch 250 and the second control switch 260 of the present invention may also be implemented by using a PMOS transistor and a Schottky diode, or by using an NMOS transistor and a PMOS transistor.
- the current detecting resistor 230 is disposed on the left side of the equalizing inductor 240, that is, the first battery unit 210 and the second battery unit 220 are electrically connected to the equalizing inductor 240 through the current detecting resistor 230, but the field It can be understood by the skilled person that the current-sense resistor 230 of the present invention can also be disposed on the right side of the equalization inductor 240, that is, the equalization inductor 240 is electrically connected to the first control switch 250 and the second control switch 260 through the current-sense resistor 230, respectively. .
- the battery equalization circuit of the present invention can utilize the feedback control circuit to collect the voltage drop across the current-sense resistor, thereby automatically adjusting the duty cycle of the control signal, so that the equalization current is substantially constant, so that the entire battery equalization circuit is achieved.
- the best balance is achieved and the risk of equalizing the current beyond the device rating is avoided, overcoming the shortcomings of existing battery equalization circuits.
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Abstract
Description
Claims (14)
- 一种电池均衡电路,其特征在于:该电池均衡电路包括第一电池单元、第二电池单元、检流电阻、均衡电感、第一控制开关、第二控制开关和反馈控制电路,其中,该第一电池单元和该第二电池单元串联,该第一电池单元、该检流电阻、该均衡电感和该第一控制开关相互电性连接以形成第一回路,而该第二电池单元、该检流电阻、该均衡电感和该第二控制开关相互电性连接以形成第二回路,该反馈控制电路为基于误差比较器的脉冲宽度调制控制电路或者脉冲频率调制控制电路,其并联于该检流电阻以侦测该检流电阻的电压降,并发出控制信号分别至该第一控制开关和该第二控制开关以在该第一回路和该第二回路之间进行切换,从而使均衡电流基本恒定。
- 如权利要求1所述的电池均衡电路,其特征在于:该第一控制开关和该第二控制开关分别为NMOS管、PMOS管和肖特基二极管中的任意两种。
- 一种电池均衡电路,其特征在于:该电池均衡电路包括第一电池单元、第二电池单元、检流电阻、均衡电感、第一控制开关、第二控制开关和反馈控制电路,其中,该第一电池单元和该第二电池单元串联,该第一电池单元、该检流电阻、该均衡电感和该第一控制开关相互电性连接以形成第一回路,而该第二电池单元、该检流电阻、该均衡电感和该第二控制开关相互电性连接以形成第二回路,该反馈控制电路并联于该检流电阻以侦测该检流电阻的电压降,其包括基准电压源和滞回比较器,其中该基准电压源用于提供基准电压且其电性连接该检流电阻的第一端和该滞回比较器的负输入端,该滞回比较器的正输入端电性连接该检流电阻的第二端,而该滞回比较器的输出端作为该反馈控制电路的输出端以输出该控制信号分别至该第一控制开关和该第二控制开关以在该第一回路和该第二回路之间进行切换,从而使均衡电流基本恒定。
- 如权利要求3所述的电池均衡电路,其特征在于:该第一控制开关和该第二控制开关分别为NMOS管和肖特基二极管。
- 如权利要求3所述的电池均衡电路,其特征在于:该第一控制开关和该第二控制开关分别为PMOS管和肖特基二极管。
- 如权利要求3所述的电池均衡电路,其特征在于:该第一控制开关和该第二控制开关分别为NMOS管和PMOS管。
- 一种电池均衡电路,其特征在于:该电池均衡电路包括第一电池单元、第二电池单元、检流电阻、均衡电感、第一控制开关、第二控制开关和反馈控制电路,其中,该第一电池单元和该第二电池单元串联,该第一电池单元、该检流电阻、该均衡电感和该第一控制开关相互电性连接以形成第一回路,而该第二电池单元、该检流电阻、该均衡电感和该第二控制开关相互电性连接以形成第二回路,该反馈控制电路并联于该检流电阻以侦测该检流电阻的电压降,并发出控制信号分别至该第一控制开关和该第二控制开关以在该第一回路和该第二回路之间进行切换,从而使均衡电流基本恒定。
- 如权利要求7所述的电池均衡电路,其特征在于:该反馈控制电路包括基准电压源和滞回比较器,其中该基准电压源用于提供基准电压且其电性连接该检流电阻的第一端和该滞回比较器的负输入端,该滞回比较器的正输入端电性连接该检流电阻的第二端,而该滞回比较器的输出端作为该反馈控制电路的输出端以输出该控制信号。
- 如权利要求7所述的电池均衡电路,其特征在于:该反馈控制电路为基于误差比较器的脉冲宽度调制控制电路或者脉冲频率调制控制电路。
- 如权利要求7所述的电池均衡电路,其特征在于:该第一控制开关和该第二控制开关分别为NMOS管和肖特基二极管。
- 如权利要求7所述的电池均衡电路,其特征在于:该第一控制开关和该第二控制开关分别为PMOS管和肖特基二极管。
- 如权利要求7所述的电池均衡电路,其特征在于:该第一控制开关和该第二控制开关分别为NMOS管和PMOS管。
- 如权利要求7所述的电池均衡电路,其特征在于:该第一电池单元和该第二电池单元分别通过该检流电阻而电性连接至该均衡电感。
- 如权利要求7所述的电池均衡电路,其特征在于:该均衡电感通过该检流电阻而分别电性连接至该第一控制开关和该第二控制开关。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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US13/697,524 US9705342B2 (en) | 2012-02-08 | 2012-03-21 | Battery equalizing circuit |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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CN201210027136.2A CN103248077B (zh) | 2012-02-08 | 2012-02-08 | 电池均衡电路 |
CN201210027136.2 | 2012-02-08 |
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WO2013117027A1 true WO2013117027A1 (zh) | 2013-08-15 |
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PCT/CN2012/072673 WO2013117027A1 (zh) | 2012-02-08 | 2012-03-21 | 电池均衡电路 |
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US (1) | US9705342B2 (zh) |
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CN105391126B (zh) * | 2015-11-30 | 2018-06-01 | 中国空间技术研究院 | 一种空间锂离子蓄电池组均衡装置 |
CN105743164A (zh) * | 2016-03-09 | 2016-07-06 | 陈曦 | 无采样电池自动均衡装置 |
WO2018068460A1 (zh) * | 2016-10-12 | 2018-04-19 | 广东欧珀移动通信有限公司 | 待充电设备和充电方法 |
CN209488195U (zh) * | 2016-10-12 | 2019-10-11 | Oppo广东移动通信有限公司 | 移动终端 |
CN106602648B (zh) * | 2016-12-14 | 2023-08-22 | 华南理工大学 | 一种基于电感储能的串联电池组双向无损均衡的改良电路 |
KR102533201B1 (ko) * | 2018-06-12 | 2023-05-15 | 삼성에스디아이 주식회사 | 전압 평형 장치 |
CN109066919A (zh) * | 2018-09-29 | 2018-12-21 | 深圳市快车道新能源发展有限公司 | 一种串接电池双向能量转移装置 |
CN115001121B (zh) * | 2022-08-03 | 2022-10-04 | 合肥华思***有限公司 | 一种用于高效储能***的限流电路、控制方法及*** |
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CN103248077B (zh) | 2016-05-18 |
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