# US 11,309,724 B2 · Battery connection method and apparatus > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,309,724 B2 - Document ID: US11309724B2 - Status: Granted - Kind: B2 - Application number: 16/721,471 - Filed: 2019-12-19 - Published: 2020-04-23 - Granted: 2022-04-19 - Earliest claimed: 2014-06-03 - Assignees: Traxxas, L.P. - Applicants: Traxxas LP - Inventors: Casey Christen Jens Christensen; Scott Rollin Schmitz; Otto Karl Allmendinger - Web page: https://patentgrep.com/patent/US11309724B2 ## CPC - H02J 7/70: characterised by the mechanical construction - H01M 10/425: {Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing (printed circuits H05K1/00)} - H02J 7/44: between battery management systems and power sources - H02J 7/485: {with provisions for charging different types of batteries} - H02J 7/865: {Battery or charger load switching, e.g. concurrent charging and load supply (H02J7/50 takes precedence)} - H01M 2010/4278: {Systems for data transfer from batteries, e.g. transfer of battery parameters to a controller, data transferred between battery controller and main controller} - H01M 2220/30: Batteries in portable systems, e.g. mobile phone, laptop - Y02E 60/10: Energy storage using batteries - H02J: ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY - H01M: PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY - Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION ## Abstract An improved electrical connector for electrically connecting a rechargeable battery with an electrically powered device as well as methods of operation for use of an electrically powered device comprising the improved connector are provided. The connector may comprise one or more features including: integration of both first terminals for transmitting charging or discharging signals to and from the battery as well as one or more signal terminals for transmitting one or more balancing signals to and from the battery; implementation of communication means allowing for one or more signals comprising battery specific information to be received by the electrically powered device upon making an electrical connection with the battery; and, one or more safety features for preventing unsupported electrical connections between incompatible connector configurations. An electrically powered implemented with the improved electrical connector may detect one or more characteristics of a battery upon electrically connecting with the battery and may reconfigure one or more operational settings of the electrically powered device in response to the detected characteristics to safely charge or discharge the battery. ## Claims ### Claim 1 A male electrical connector of an electrical device, comprising: a male housing comprising: a male extended portion at least partially forming a socket for receiving a plug portion of a female electrical connector; a first and second male internal wall extending into the male extended portion; electrically conductive first and second male power terminals respectively comprising first and second male contact surfaces comprising at least a portion of a face of the first and second male power terminals; wherein the first and second male power terminals are at least partially disposed within the socket and are configured to electrically couple with respective first and second female power terminals of the female electrical connector when the plug portion is inserted into the socket; wherein the socket comprises a keying member for inhibiting an unsupported electrical connection between the male electrical connector and another female electrical connector not comprising a compatible female keying feature; wherein the first and second male internal walls are adjacent to at least a portion of another face of the first and second male power terminals opposite to the first and second male contact surfaces; and wherein the first male internal wall is different than the second male internal wall in at least one of their respective dimensions of width or thickness. ### Claim 2 (depends on 1) The male electrical connector of claim 1, wherein the unsupported electrical connection comprises a reverse polarity electrical connection with the female electrical connector. ### Claim 3 (depends on 1) The male electrical connector of claim 1, wherein the keying member is a ridge extending into the socket. ### Claim 4 (depends on 1) The male electrical connector of claim 1, wherein the keying member is a notch. ### Claim 5 (depends on 1) The male electrical connector of claim 1, wherein the socket further comprises a second keying member. ### Claim 6 (depends on 1) The male electrical connector of claim 1, wherein the location of the keying member indicates a type of battery. ### Claim 7 (depends on 6) The male electrical connector of claim 6, wherein the type of battery is a lithium polymer battery. ### Claim 8 (depends on 1) The male electrical connector of claim 1, wherein the unsupported electrical connection comprises an incompatible battery type for an electrical device. ### Claim 9 A female electrical connector configured to electrically connect to an electrical device, comprising: a female housing comprising: a female extended portion comprising a female keying feature inhibiting an unsupported electrical connection with another male electrical connector comprising an incompatible male keying feature; a female receptacle provided at least partially in the female extended portion and comprising: a bladed female power terminal provided at least partially within the female receptacle and comprising: a single female connector surface provided on at least a portion of a face of the bladed female power terminal; and a resilient member abutting a surface of the female receptacle; wherein an opposing face of the bladed female power terminal abuts an opposing surface of the female receptacle, discrete from the surface abutting the resilient member; and wherein the female extended portion is at least partially receivable within a male electrical connector comprising a compatible male keying feature in order to electrically couple the male and female electrical connectors. ### Claim 10 (depends on 9) The female electrical connector of claim 9, wherein the unsupported electrical connection comprises a reverse polarity electrical connection with the male electrical connector. ### Claim 11 (depends on 9) The female electrical connector of claim 9, the female extended portion further comprises an additional female keying feature. ### Claim 12 (depends on 11) The female electrical connector of claim 11, wherein the location of the additional female keying feature indicates a type of battery. ### Claim 13 (depends on 12) The female electrical connector of claim 12, wherein the type of battery is a Nickel Metal Hydride Battery. ### Claim 14 (depends on 12) The female electrical connector of claim 12, wherein the type of battery is a Lithium Polymer Battery. ### Claim 15 (depends on 9) The male electrical connector of claim 9, wherein the unsupported electrical connection comprises an incompatible battery type for an electrical device.