An electrical combination including a power tool and a battery pack. The power tool includes power tool terminals. The battery pack is configured to be interfaced with the power tool. The battery pack includes a battery pack housing, at least three terminals, and a plurality of battery cells. The ba
An electrical combination including a power tool and a battery pack. The power tool includes power tool terminals. The battery pack is configured to be interfaced with the power tool. The battery pack includes a battery pack housing, at least three terminals, and a plurality of battery cells. The battery pack terminals include a positive terminal, a negative terminal, and a sense terminal. The at least three terminals are configured to be interfaced with the power tool terminals. The plurality of battery cells are arranged within and supported by the battery pack housing. Each of the battery cells has a lithium-based chemistry and a respective state of charge, and power is transferable between the battery cells and the power tool. A circuit is configured to monitor the battery cells, detect a charge imbalance among the battery cells, and prevent the battery pack from operating when the charge imbalance is detected.
대표청구항▼
1. A battery pack configured to be interfaced with an electrical device, the battery pack comprising: a battery pack housing;a positive terminal, a negative terminal, and a sense terminal configured to be interfaced with corresponding terminals of the electrical device;a plurality of battery cells a
1. A battery pack configured to be interfaced with an electrical device, the battery pack comprising: a battery pack housing;a positive terminal, a negative terminal, and a sense terminal configured to be interfaced with corresponding terminals of the electrical device;a plurality of battery cells arranged within the housing, each of the plurality of battery cells having a lithium-based chemistry and a respective state of charge, power being transferable between the plurality of battery cells and the electrical device;means for monitoring the plurality of battery cells;means for detecting a charge imbalance among the plurality of battery cells based on the respective state of charge of each of the plurality of battery cells; anda microprocessor programmed to disable the battery pack when the charge imbalance is detected. 2. The battery pack of claim 1, wherein the electrical device is a power tool. 3. The battery pack of claim 1, wherein the respective states of charge of each of the plurality of battery cells are monitored at approximately the same time. 4. The battery pack of claim 1, wherein an imbalanced battery cell is identified among the plurality of battery cells. 5. The battery pack of claim 4, wherein the imbalanced battery cell is a low voltage cell. 6. The battery pack of claim 1, wherein the microprocessor is further programmed to initiate a controlled discharging process to discharge at least one of the plurality of battery cells when the charge imbalance is detected. 7. The battery pack of claim 6, wherein the microprocessor is further programmed to monitor the state of charge of each of the plurality of battery cells during the controlled discharging process. 8. An electrical combination comprising: a power tool including power tool terminals;a battery pack configured to be interfaced with the power tool, the battery pack including a battery pack housing,a positive terminal, a negative terminal, and a sense terminal configured to be interfaced with the power tool terminals, anda plurality of battery cells arranged within the battery pack housing, each of the plurality of battery cells having a lithium-based chemistry and a respective state of charge, power being transferable between the plurality of battery cells and the power tool;means for monitoring the plurality of battery cells;means for detecting a charge imbalance among the plurality of battery cells based on the respective state of charge of each of the plurality of battery cells; anda microprocessor programmed to prevent the battery pack from operating when the charge imbalance is detected. 9. The electrical combination of claim 8, wherein the respective state of charge of each of the plurality of battery cells is monitored at approximately the same time. 10. The electrical combination of claim 8, wherein an imbalanced battery cell is identified among the plurality of battery cells. 11. The electrical combination of claim 10, wherein the imbalanced battery cell is a low voltage cell. 12. The electrical combination of claim 8, wherein the microprocessor is further programmed to initiate a controlled discharging process to discharge at least one of the plurality of battery cells when the imbalance is detected. 13. The electrical combination of claim 12, wherein the microprocessor is further programmed to monitor the state of charge of each of the plurality of battery cells during the controlled discharging process. 14. The battery pack of claim 1, wherein the means for monitoring the plurality of battery cells includes the microprocessor. 15. The battery pack of claim 1, wherein the means for detecting the charge imbalance among the plurality of battery cells includes the microprocessor. 16. The electrical combination of claim 8, wherein the means for monitoring the plurality of battery cells includes the microprocessor. 17. The electrical combination of claim 8, wherein the means for detecting the charge imbalance among the plurality of battery cells includes the microprocessor. 18. The electrical combination of claim 8, wherein the microprocessor, the means for monitoring the plurality of battery cells, and the means for detecting the charge imbalance among the plurality of battery cells are located within the battery pack housing.
연구과제 타임라인
LOADING...
LOADING...
LOADING...
LOADING...
LOADING...
이 특허에 인용된 특허 (47)
Yeon-Chul Choo KR, Apparatus and method for controlling power supply to a battery-powered electronic device.
Tsantilis Eleftherios (20 Kydathinaion Str Athens 10558 GRX), Battery charging system, stepping and interactively self-adjusting to the normal voltage of the battery.
Odaohhara, Shigefumi, Battery having a plurality of temperature sensors for outputting different control information to a connected computer system based upon the temperature relationships of the sensors.
Johnson, Todd W.; Grzybowski, Dennis J.; Kubale, Mark A.; Rosenbecker, Jay J.; Meyer, Gary D.; Zeiler, Jeffrey M.; Glasgow, Kevin L.; Schuecher, Karl F., Battery pack.
Calogero Ribellino IT; Patrizia Milazzo IT; Francesco Pulvirenti IT, Control circuit for the charging current of batteries at the end of the charging phase, especially for lithium batteries.
Funabashi, Kazuhiko; Aradachi, Takao; Hanawa, Hiroyuki; Ogura, Masayuki, Cordless power tool with overcurrent protection circuit permitting the overcurrent condition during specified time periods.
Bhagwat Pradeep (Baltimore MD) Harrell Duronie (Charlotte NC) Smith Stephen (Raleigh NC) Woods Samuel G. (Baltimore MD), Direct current motor speed control.
Johnson, Todd W.; Grzybowski, Dennis J.; Kubale, Mark A.; Rosenbecker, Jay J.; Scheucher, Karl F.; Meyer, Gary D.; Zeiler, Jeffrey M.; Glasgow, Kevin L., Lithium-based battery pack for a hand-held power tool.
Bhagwat Pradeep M. (Baltimore MD) Brotto Daniele C. (Baltimore MD) Walter Richard T. (Baldwin MD), Method and apparatus for varying the sample rate of a fast battery charger.
Fernandez Jose Maria ; Coapstick Ronald Scot, Method for ultra-rapidly charging a rechargeable battery using multi-mode regulation in a vehicular recharging system.
Sakoh Masahiko,JPX ; Sugiura Masatoshi,JPX ; Matsunaga Yutaka,JPX ; Muramatsu Tomoo,JPX ; Horikawa Kazuyoshi,JPX, Power tool charging system having a charge level indicator and charge control functions.
Hull Matthew P. (Jamestown RI) Taylor Alwyn H. (Wellesley Hills MA) Hruska Louis W. (Northboro MA) Friel Daniel D. (Woburn MA), Smart battery algorithm for reporting battery parameters to an external device.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.