US2023261273A1PendingUtilityA1

Battery pack for a cordless power tool

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Assignee: BLACK & DECKER INCPriority: Jun 30, 2014Filed: Apr 20, 2023Published: Aug 17, 2023
Est. expiryJun 30, 2034(~7.9 yrs left)· nominal 20-yr term from priority
Inventors:Nathan J. OsborneCorey RedmondDustin JeffriesRalphy A. LouisMichael VaripatisBhanuprasad V. GortiDaniel J. White
H01M 10/482H01M 10/486H01M 50/211H01M 50/516H01M 50/502H01M 50/209H01M 2220/30H01M 10/425H01M 10/0525H01M 10/0585Y02E60/10H01M 50/581H01M 50/578Y02P70/50H01M 50/509
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Claims

Abstract

A battery pack including a housing, a terminal block, a printed circuit board, a plurality of pouch cells assembled and connected in a stacked configuration positioned within the housing, a sensor placed on a central portion of an outermost pouch cell of the stack of the plurality of pouch cells and a battery management unit coupled to the printed circuit board and electrically coupled to the sensor.

Claims

exact text as granted — not AI-modified
What is claimed is: 
     
         1 . A battery pack, comprising:
 a housing;   a terminal block assembly;   a printed circuit board;   a battery cell holder positioned within the housing, the battery cell holder including a tray;   a plurality of pouch cells assembled and connected in a stacked configuration positioned within the tray;   a sensor placed on a central portion of an outermost pouch cell of the stack of the plurality of pouch cells; and   a battery management unit coupled to the printed circuit board and electrically coupled to the sensor.   
     
     
         2 . The battery pack, as recited in  claim 1 , wherein the sensor is a flex sensor. 
     
     
         3 . The battery pack, as recited in  claim 1 , wherein the sensor is a resistive sensor. 
     
     
         4 . The battery pack, as recited in  claim 1 , wherein the sensor is a variable resistance sensor. 
     
     
         5 . The battery pack, as recited in  claim 1 , wherein the sensor measures swelling of the outermost pouch cell. 
     
     
         6 . The battery pack, as recited in  claim 1 , wherein the battery management unit adjusts charging or discharging of the plurality of pouch cells in response to a signal from the sensor. 
     
     
         7 . The battery pack, as recited in  claim 1 , wherein the battery management unit terminates charging or discharging of the plurality of pouch cells in response to a signal from the sensor. 
     
     
         8 . The battery pack, as recited in  claim 1 , wherein the battery management unit changes thermal, voltage or current limits for charging or discharging the plurality of pouch cells in response to a signal from the sensor. 
     
     
         9 . The battery pack, as recited in  claim 1 , wherein each of the plurality of pouch cells comprises a pouch and a battery cell disposed within the pouch, the pouch having a width dimension and a length dimension, wherein the central portion is central to the width dimension and the length dimension. 
     
     
         10 . The battery pack, as recited in  claim 1 , wherein the sensor is placed on an outer side of the outermost pouch cell of the stack of the plurality of pouch cells. 
     
     
         11 . A battery pack, comprising:
 a housing;   a terminal block assembly;   a printed circuit board;   a plurality of pouch cells assembled and connected in a stacked configuration positioned within the housing;   a sensor placed on a central portion of an outermost pouch cell of the stack of the plurality of pouch cells; and   a battery management unit coupled to the printed circuit board and electrically coupled to the sensor.   
     
     
         12 . A battery pack, as recited in  claim 11 , wherein the sensor is a flex sensor. 
     
     
         13 . A battery pack, as recited in  claim 11 , wherein the sensor is a resistive sensor. 
     
     
         14 . A battery pack, as recited in  claim 11 , wherein the sensor is a variable resistance sensor. 
     
     
         15 . A battery pack, as recited in  claim 11 , wherein the sensor measures swelling of the outermost pouch cell. 
     
     
         16 . A battery pack, as recited in  claim 11 , wherein the battery management unit adjusts charging or discharging of the plurality of pouch cells in response to a signal from the sensor. 
     
     
         17 . A battery pack, as recited in  claim 11 , wherein the battery management unit terminates charging or discharging of the plurality of pouch cells in response to a signal from the sensor. 
     
     
         18 . A battery pack, as recited in  claim 11 , wherein the battery management unit changes thermal, voltage or current limits for charging or discharging the plurality of pouch cells in response to a signal from the sensor. 
     
     
         19 . A battery pack, as recited in  claim 11 , wherein each of the plurality of pouch cells comprises a pouch and a battery cell disposed within the pouch, the pouch having a width dimension and a length dimension, wherein the central portion is central to the width dimension and the length dimension. 
     
     
         20 . A battery pack, as recited in  claim 11 , wherein the sensor is placed on an outer side of the outermost pouch cell of the stack of the plurality of pouch cells.

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