[특허]Battery unit balancing system

[미국특허] Battery unit balancing system 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	H02J-007/00 H02J-007/14
출원번호	US-0939889 (2010-11-04)
등록번호	US-8723482 (2014-05-13)
발명자 / 주소	Dao, Yuan Schlanger, William
출원인 / 주소	Elite Power Solutions LLC
대리인 / 주소	Invention To Patent Services LLC
인용정보	피인용 횟수 : 1 인용 특허 : 32

초록 ▼

A battery unit balancing system comprises a discharging circuit and means for connecting the discharging circuit to a battery unit. The discharging circuit is configured such that it is automatically activated, when a voltage of the battery unit exceeds a predetermined threshold, to draw a constant

대표청구항 ▼

1. A battery unit balancing system comprising: a. a discharging circuit configured for connection to a battery unit comprising: i. a voltage dividing circuit;ii. a comparator circuit comprising: 1. a shunt regulator configured in parallel with said voltage divider;iii. one or more current source circuits comprising: 1. current regulator; and2. an output device;wherein said output device, said shunt regulator and said one or more current source circuits are connected in parallel with the battery unit, wherein, while connected to the battery unit, the discharging circuit is configured for automatic activation such that, when a voltage of the battery unit exceeds a predetermined threshold, the discharging circuit draws a constant discharging current from the battery unit until the voltage of the battery unit falls below the predetermined threshold;wherein the voltage dividing circuit is connected to the comparator circuit via a node to the shunt regulator,said shunt regulator is connected to said current source circuit via a current limiting resistor of said output device,whereby the comparator circuit is activated to conduct when the voltage of the battery unit exceeds the predetermined threshold,the voltage dividing circuit is programmed to generate a predetermined voltage,wherein the predetermined voltage activates the one or more current source circuits via the comparator circuit, andwhereby each current source circuit of the one or more current source circuits is configured such that a substantially stable current flows independent of the voltage of the battery unit. 2. The battery balancing system of claim 1, wherein the voltage dividing circuit comprises one or more resisters that are programmed to generate the predetermined voltage. 3. The battery balancing system of claim 1, wherein each current source circuit of the one or more current source circuits comprises: a. a first terminal connected between the battery unit and the balancing circuit, wherein said first terminal is connected to an emitter of a first transistor and a first terminal of a first resistor;b. a base of said first transistor connected to a second terminal of said first resistor and an emitter of a second transistor;c. a collector of said first transistor connected to a base of the second transistor; andd. a collector of said second transistor connected to said second terminal,wherein said second terminal is connected between said battery unit and said balancing circuit. 4. The battery unit balancing system of claim 1, wherein the comparator circuit does not conduct when the voltage of the battery unit is below the predetermined threshold. 5. The battery unit balancing system of claim 1, wherein each of the one or more current source circuits comprises one or more transistors and one or more resistors, wherein each current source circuit of the one or more current source circuits is configured such that the respective one or more transistors interact to form an equilibrium so that the stable current flows through the one or more resistors, thereby dissipating power. 6. The battery unit balancing system of claim 1, wherein the predetermined threshold is about 3.7V. 7. The battery unit balancing system of claim 1, further comprising a first output device for indicating the system is receiving power from the battery unit and a second output device for indicating the discharging circuit is activated. 8. The battery unit balancing system of claim 1, wherein the battery unit is a single battery cell. 9. The battery unit balancing system of claim 8, wherein the battery cell is lithium ion cell. 10. The battery unit balancing system of claim 1, wherein the voltage dividing circuit comprises: a. a first resistor having a first resistor value;b. a second resistor having a second resistor value; andc. a node between said first and second resistors connected to a shunt regulator,whereby the voltage dividing circuit provides a node voltage to the shunt regulator of the comparator circuit having a value equal to the product of the voltage of the battery and the second resistor value divided by the sum of first and second resistor values. 11. The battery unit balancing system of claim 10, wherein at least one of the first and second resistors are variable resistors that can be adjusted to provide a node voltage to shunt regulator. 12. The battery unit balancing system of claim 1, whereby when said comparator circuit is activated to conduct, said voltage dividing circuit divides the battery voltage by approximately ⅓ to produce a voltage of 1.2V when said battery unit reaches said predetermined threshold at which time said current source is activated.

이 특허에 인용된 특허 (32) 인용/피인용 타임라인 분석

Peterson William Anders, Autonomous battery equalization circuit.
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LoCascio James J., Battery cell equalization circuit.
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Koch Brian James, Battery charge maintenance through opportunity equalization.
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Ishikawa,Satoshi; Okamoto,Hajime, Battery control device for equalization of cell voltages.
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Stuart Thomas A. (Maumee OH) Ye Zhong (Toledo OH), Battery equalization circuit with ramp converter.
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Stuart Thomas A., Battery equalization circuit with ramp converter and selective outputs.
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Ambrosio,Joseph Mario; Sfakianos,Konstantinos, Battery management and equalization system for batteries using power line carrier communications.
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Ooishi, Manabu; Ishikawa, Satoshi, Battery monitoring device for hybrid vehicle.
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Takayuki Hidaka JP; Toshio Okamura JP, Cell shunt circuit for battery cells.
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Sobue,Satoshi; Yamamoto,Tomohisa, Cell voltage equalization apparatus for combined battery pack including circuit driven by power supplied by the combined battery pack.
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Stadnick Steven J. (Lakewood CA) Taenaka Robert K. (Granada Hills CA), Charge balancing of batteries during charging.
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Pearce Leonard J. (Bournemouth GB2) Hazzard Graham (Bournemouth GB2), Charge balancing of rechargeable batteries.
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Pacholok David R. (Sleepy Hollow IL) Fouchard David T. (Madison WI) Ebner Walter B. (Lodi WI), Charge equalization of series connected cells or batteries.
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Peter David A. (Anderson IN) Ayres John L. (Cicero IN), Distributed multi-module battery equalization.
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Arledge Arthur L. ; Dobrowski Russell G. ; Hughes Peter S. ; Szabo Andrew N., Electrical scooter having an equalization circuit for charging multiple batteries.
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Tsenter Boris ; Golod Mikhail, Energy transfer and equalization in rechargeable lithium batteries.
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Podrazhansky Yury M. ; Podrazhansky Mikhail M. ; Kusharskiy Yefim Y., Equalization of series-connected cells of a battery using controlled charging and discharging pulses.
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Matteau Michel (Gloucester CAX) Braun Howard R. (Almonte CAX) Gardner Christopher L. (Dunrobin CAX), Lithium battery protection circuit.
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Wang, Chuanfu; Yan, Yueqing; Yang, Haishan, Lithium secondary battery having internal protection circuit.
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Ronald, Timothy R., Lithium-ion over voltage protection circuit.
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Huelss,Rolf, Low power, high accuracy lithium battery protection circuit.
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Peterson William Anders ; Roden Garey George, Magnetically coupled autonomous battery equalization circuit.
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Podrazhansky Yury M. (Norcross GA) Podrazhansky Mikhail Y. (Norcross GA) Golod Mikhail B. (Dunwoody GA), Method and apparatus for automatic equalization of series-connected batteries.
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Winnie W. Choy, Method and system for charge equalization of lithium-ion batteries.
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Renda, Gregory Lee, Method of balancing batteries.
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Wan,Wei Liang, Protection circuit for lithium battery pack serving as tool power source.
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Pascual Cesar ; Krein Philip T., Switched capacitor system for automatic battery equalization.
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Pedicini Christopher S., System and method for balancing charge cycles for batteries or multiple-cell battery packs.
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Ciaran J. Patterson, System and method for monitoring battery equalization.
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Zhang Chaojiong, System for battery formation, charging, discharging, and equalization.
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Keller, Jesse P., Systems and methods for battery charging and equalization.
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Tamura Hiroshi,JPX ; Yoshida Hideji,JPX ; Nagata Tetsuya,JPX, Voltage balancer device for combination battery.
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이 특허를 인용한 특허 (1) 인용/피인용 타임라인 분석

Wang, Xiaoping; Bai, Qinggang, Protective device and protective system for battery assembly which detects discontinuities through voltage monitoring.
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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

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[미국특허] Battery unit balancing system 원문보기

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[미국특허] Battery unit balancing system 원문보기

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