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WO1992011679A1 - Battery apparatus with circuit runner as current limiting device - Google Patents

Battery apparatus with circuit runner as current limiting device Download PDF

Info

Publication number
WO1992011679A1
WO1992011679A1 PCT/US1991/008576 US9108576W WO9211679A1 WO 1992011679 A1 WO1992011679 A1 WO 1992011679A1 US 9108576 W US9108576 W US 9108576W WO 9211679 A1 WO9211679 A1 WO 9211679A1
Authority
WO
WIPO (PCT)
Prior art keywords
terminals
battery
circuit
runner
battery apparatus
Prior art date
Application number
PCT/US1991/008576
Other languages
French (fr)
Inventor
James L. Tidwell
Alay M. Mehta
Brent Frei
Original Assignee
Motorola, Inc.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Motorola, Inc. filed Critical Motorola, Inc.
Publication of WO1992011679A1 publication Critical patent/WO1992011679A1/en

Links

Classifications

    • 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
    • H01M10/44—Methods for charging or discharging
    • 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
    • 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
    • H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
    • H02J7/00304—Overcurrent protection
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00—Printed circuits
    • H05K1/16—Printed circuits incorporating printed electric components, e.g. printed resistor, capacitor, inductor
    • H05K1/167—Printed circuits incorporating printed electric components, e.g. printed resistor, capacitor, inductor incorporating printed resistors
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/09—Shape and layout
    • H05K2201/09209—Shape and layout details of conductors
    • H05K2201/09218—Conductive traces
    • H05K2201/09263—Meander
    • 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

Definitions

  • This invention relates generally to batteries and more specifically to batteries having current limiting protection.
  • nichrome element As a separate part, which is attached to the cell pack by welding or by a solder connection to a flex circuit, to increase the total series resistance to an acceptable value.
  • This component results in higher overall battery cost due to the added component and added manufacturing process steps.
  • a battery apparatus having at least two terminals, adapted for interconnection to a power consuming device comprises at least one cell having two terminals.
  • the battery apparatus further comprises a circuit carrying substrate for providing connection between the battery terminals and the cell terminals.
  • Disposed on the circuit carrying substrate is a circuit runner having a pre-determined width and length for establishing a pre-determined resistance.
  • This circuit runner is adapted for providing current limiting between the battery terminal and the cell terminals. The use of this circuit runner eliminates the need for a separate resistive component to perform similar function.
  • FIG. 1 is a perspective view of a battery apparatus in accordance with the present invention.
  • FIG. 2 is a schematic diagram of the internal elements of a battery apparatus in accordance with the present invention.
  • FIG.3 is a diagram of a circuit carrying substrate with a circuit runner in accordance with the principles of the present invention.
  • FIG. 4 is a receiver in accordance with the present invention.
  • FIG. 1 a perspective view of a battery apparatus 100 is shown.
  • the battery 100 includes a plurality of cells, a number of contact terminals, and a circuit carrying substrate connecting the battery cells to the contact terminals.
  • the circuit carrying substrate is also populated with components providing safety and protection to the battery apparatus 100. These elements of the battery apparatus 100 are more clearly presented in FIG. 2.
  • the schematic 200 shows a number of terminals intended to connect various devices to the battery.
  • Terminal 212, 216, and 214 are charging terminals and are intended for connection to a charger or a power producing device.
  • Terminals 222, 224, and 226 are discharging or output terminals and are intended for connection to a load or a power consuming device.
  • the schematic 200 further shows two blocks of cells 202 and 203 each having three cells in series. The two blocks of cells 202 and 203 are serially coupled via a thermal element such 206.
  • the thermal element 206 may be a RaychemTM device which is a temperature responsive current limiting device and is intended to protect the cells 202 and 203 in the event that an undesired temperature rise is experienced. It is significant to note that the number of cells or their electrical arrangement is not significant in the operation of the battery apparatus 100, as so far as the essentials of the present invention are concerned. In some applications battery cells 202 may include more or less cells and be placed in parallel rather than in series.
  • the resulting positive terminal 228 of the cells 202 and 203 is connected to terminal 222 and to the cathode of a diode 204, having its anode connected to terminal 212.
  • the diode 204 blocks the current from flowing in the direction of the charger.
  • the resulting negative terminal 230 of the cells 202 and 203 is connected to the first ends of a resistor 208 and a thermistor 210.
  • the resistor 208 is a circuit runner whose width and length are pre-determined to establish a pre-determined desired resistance. This feature of the resistor 208 is explained in more details in conjunction with FIG. 3.
  • the second end of the resistor 208 is connected to terminals 21 and 224.
  • the second end of the thermistor 210 is connected to terminals 216 and 226.
  • the resistance of the thermistor 210 varies with temperature to control the current flow from a charger or to a load.
  • the addition of the thermistor 210 and the associated terminals 216 and 226 adds to the safety of the battery.
  • FIG. 3 a diagram of a circuit carrying substrate 300 with a circuit runner 208 having a pre-determined width and length is shown.
  • the substrate 300 is a flexible in this embodiment, but if desired rigid printed circuit boards can be used.
  • the substrate 300 is used in the battery 100 to provide electrical connections between its various elements.
  • the substrate 300 is populated with additional components that are recommended for proper charging and discharging of the battery 100. However, these additional components are not necessary to the essentials of this invention.
  • the substrate 300 shows three groups of terminals.
  • the first group of terminal 212, 216, and 214 provide the connection between the battery 100 and a charger.
  • the second group of terminals 222, 224, and 226 provide the connection between the battery 100 and a power consuming device.
  • the third group of terminal 228 and 230 provide connection to the cells 202 and 203 of the battery 100.
  • the location of the diode 204 and the thermistor 210 are also shown on the substrate 300.
  • An improvement obtained with this circuit carrying substrate is the absence of a component representing the limiting resistor 208.
  • the limiting resistor 208 is, however, represented by a circuit runner 302 which is shown to connect terminals 214 and 224 to the terminal 230.
  • the length and the width of the circuit runner 302 are selected to establish a pre- determined resistance in accordance with the safety requirements of the battery apparatus 100.
  • a resistance of 0.1 ⁇ is desired. Copper with a width of 0.040 inches and with a resistance of 140 ⁇ / 1000 ft. is selected as the runner material for this embodiment. Using the following formula the length of the runner is calculated to be 8.5 inches.
  • X is the runner length Y is the required resistance of the runner
  • Z is the resistance of the conductor per ft.
  • the desired resistance can be achieved without the use of an additional component.
  • the resistance of the pads of the terminals 214 and 230 must be included in the calculation of the resistance of the runner 302.
  • the relative location of the diode 204 and the thermistor 210 are shown on the substrate 300 for reference. As can be observed, the location of these components or any other components used with the substrate 300 including the battery and the cell terminals has no impact on the principle of this invention. If desired the circuit runner 302 may be used as a fusible link. In such applications the runner 302 will open which results in current cutoff.
  • the resistor 208 (302) is electrically placed in between the cells for added protection required by such designs.
  • the presentation of the battery 100 and the substrate 300 aiong with their associated components is meant to provide an example, however preferred, embodiment of the present invention. This presentation should not be construed as the only embodiment of this invention as changes are possible without departing from the spirit of the invention.
  • circuit runner 302 having a pre-determined length and width is used to provide the same electrical performance as a resistive component would in the battery apparatus 100. This substitution is significant for it reduces component cost and manufacturing process cost in such high quantity production devices as batteries.
  • FIG. 4 a block diagram of a radio or receiver 400 is shown in accordance with the present invention.
  • the receiver 400 is powered by the battery apparatus 100.
  • a received radio frequency signal modulated with voice, data, or a combination of both is received by the antenna 402 and is applied to the receiver 404 for demodulation.
  • the receiver 404 is of conventional design and is well known in the art.
  • the receiver 404 operates to alert the radio user of such a reception.
  • the received signal is presented to the user in a variety of ways depending upon the message type and optional features that may be enabled or disabled. Text messages are presented on a display 406 while audio signals are presented to the user on a speaker 408.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Power Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Battery Mounting, Suspending (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

A battery (100) has at least two terminals (222 and 224) adapted for interconnection to a power consuming device. The battery (100) comprises at least one cell (202 and 203) having two terminals (228 and 230). The battery apparatus (100) further comprises a circuit carrying substrate (300) for providing connection between the battery terminals (222 and 224) and the cell terminals (228 and 230). Disposed on the circuit carrying substrate (300) is a circuit runner (302), having a pre-determined width and length for establishing a pre-determined resistance. This circuit runner (302) is adapted for providing current limiting between the battery terminals (222 and 224) and the cell terminals (228 and 230). The use of this circuit runner (302) eliminates the need for a resistive component to perform similar function.

Description

BATTERY APPARATUS WITH CIRCUIT RUNNER AS CURRENT LIMITING DEVICE
Technical Field
This invention relates generally to batteries and more specifically to batteries having current limiting protection.
Background
In the design of batteries safety has always played a significant role. This is particularly true in the case of battery designs that aim to meet the safety requirements of certain agencies, such as FM (Factory Mutual). One of the safety requirements that such agencies require batteries to meet is the instantaneous and maximum attainable current due to external shorting. This is because an unlimited attainable current can cause explosions in environments with certain explosive gas mixtures due to arcing. These arcs are representative of available energy sparked by the battery. Therefore, battery current must be limited in order to reduce spark energy to a safe level. To meet this requirement battery designers have typically used a 0.1 Ω nichrome resistive element. With the incorporation of flex circuits in batteries, common practice is to utilize a nichrome element as a separate part, which is attached to the cell pack by welding or by a solder connection to a flex circuit, to increase the total series resistance to an acceptable value. The addition of this component results in higher overall battery cost due to the added component and added manufacturing process steps.
Summary of the Invention
A battery apparatus having at least two terminals, adapted for interconnection to a power consuming device, is disclosed. The battery apparatus comprises at least one cell having two terminals. The battery apparatus further comprises a circuit carrying substrate for providing connection between the battery terminals and the cell terminals. Disposed on the circuit carrying substrate is a circuit runner having a pre-determined width and length for establishing a pre-determined resistance. This circuit runner is adapted for providing current limiting between the battery terminal and the cell terminals. The use of this circuit runner eliminates the need for a separate resistive component to perform similar function.
Brief Pescrip ip-T pf the Prewinqs
FIG. 1 is a perspective view of a battery apparatus in accordance with the present invention. FIG. 2 is a schematic diagram of the internal elements of a battery apparatus in accordance with the present invention.
FIG.3 is a diagram of a circuit carrying substrate with a circuit runner in accordance with the principles of the present invention. FIG. 4 is a receiver in accordance with the present invention.
Detailed Description of the Preferred Embodiment
Referring to FIG. 1 , a perspective view of a battery apparatus 100 is shown. The battery 100 includes a plurality of cells, a number of contact terminals, and a circuit carrying substrate connecting the battery cells to the contact terminals. The circuit carrying substrate is also populated with components providing safety and protection to the battery apparatus 100. These elements of the battery apparatus 100 are more clearly presented in FIG. 2.
Referring now to FIG.2, a schematic diagram 200 of the electrical components of the battery apparatus 100 is shown. The schematic shows a number of terminals intended to connect various devices to the battery. Terminal 212, 216, and 214 are charging terminals and are intended for connection to a charger or a power producing device. Terminals 222, 224, and 226 are discharging or output terminals and are intended for connection to a load or a power consuming device. The schematic 200 further shows two blocks of cells 202 and 203 each having three cells in series. The two blocks of cells 202 and 203 are serially coupled via a thermal element such 206. The thermal element 206 may be a Raychem™ device which is a temperature responsive current limiting device and is intended to protect the cells 202 and 203 in the event that an undesired temperature rise is experienced. It is significant to note that the number of cells or their electrical arrangement is not significant in the operation of the battery apparatus 100, as so far as the essentials of the present invention are concerned. In some applications battery cells 202 may include more or less cells and be placed in parallel rather than in series.
The resulting positive terminal 228 of the cells 202 and 203 is connected to terminal 222 and to the cathode of a diode 204, having its anode connected to terminal 212. The diode 204 blocks the current from flowing in the direction of the charger. The resulting negative terminal 230 of the cells 202 and 203 is connected to the first ends of a resistor 208 and a thermistor 210. The resistor 208 is a circuit runner whose width and length are pre-determined to establish a pre-determined desired resistance. This feature of the resistor 208 is explained in more details in conjunction with FIG. 3. The second end of the resistor 208 is connected to terminals 21 and 224. The second end of the thermistor 210 is connected to terminals 216 and 226. The resistance of the thermistor 210 varies with temperature to control the current flow from a charger or to a load. The addition of the thermistor 210 and the associated terminals 216 and 226 adds to the safety of the battery.
Referring now to FIG. 3, a diagram of a circuit carrying substrate 300 with a circuit runner 208 having a pre-determined width and length is shown. The substrate 300 is a flexible in this embodiment, but if desired rigid printed circuit boards can be used. The substrate 300 is used in the battery 100 to provide electrical connections between its various elements. The substrate 300 is populated with additional components that are recommended for proper charging and discharging of the battery 100. However, these additional components are not necessary to the essentials of this invention. The substrate 300 shows three groups of terminals. The first group of terminal 212, 216, and 214 provide the connection between the battery 100 and a charger. The second group of terminals 222, 224, and 226 provide the connection between the battery 100 and a power consuming device. The third group of terminal 228 and 230 provide connection to the cells 202 and 203 of the battery 100. The location of the diode 204 and the thermistor 210 are also shown on the substrate 300. An improvement obtained with this circuit carrying substrate is the absence of a component representing the limiting resistor 208. The limiting resistor 208 is, however, represented by a circuit runner 302 which is shown to connect terminals 214 and 224 to the terminal 230. The length and the width of the circuit runner 302 are selected to establish a pre- determined resistance in accordance with the safety requirements of the battery apparatus 100. The length and the width of the circuit runner 302 can be calculated for a particular runner material with a particular thickness to result in a desired resistance. Techniques for calculating the dimensions of the circuit runner 302 are well known in the art. One such technique uses the following calculations and is presented here for reference only.
For this application a resistance of 0.1 Ω is desired. Copper with a width of 0.040 inches and with a resistance of 140 Ω / 1000 ft. is selected as the runner material for this embodiment. Using the following formula the length of the runner is calculated to be 8.5 inches.
Y (Ω) X (ft.) =
Z (Ω/ft.)
where:
X is the runner length Y is the required resistance of the runner
Z is the resistance of the conductor per ft.
By extending the runner 302 a length equal to 8.5 inches the desired resistance can be achieved without the use of an additional component. Note that for maximum accuracy the resistance of the pads of the terminals 214 and 230 must be included in the calculation of the resistance of the runner 302. The relative location of the diode 204 and the thermistor 210 are shown on the substrate 300 for reference. As can be observed, the location of these components or any other components used with the substrate 300 including the battery and the cell terminals has no impact on the principle of this invention. If desired the circuit runner 302 may be used as a fusible link. In such applications the runner 302 will open which results in current cutoff.
In some applications the resistor 208 (302) is electrically placed in between the cells for added protection required by such designs. The presentation of the battery 100 and the substrate 300 aiong with their associated components is meant to provide an example, however preferred, embodiment of the present invention. This presentation should not be construed as the only embodiment of this invention as changes are possible without departing from the spirit of the invention.
In summary a circuit runner 302 having a pre-determined length and width is used to provide the same electrical performance as a resistive component would in the battery apparatus 100. This substitution is significant for it reduces component cost and manufacturing process cost in such high quantity production devices as batteries.
Referring to FIG. 4 now, a block diagram of a radio or receiver 400 is shown in accordance with the present invention. The receiver 400 is powered by the battery apparatus 100. A received radio frequency signal modulated with voice, data, or a combination of both is received by the antenna 402 and is applied to the receiver 404 for demodulation. The receiver 404 is of conventional design and is well known in the art. Typically, upon the reception of a signal the receiver 404 operates to alert the radio user of such a reception. Once the alert signal has been generated, the received signal is presented to the user in a variety of ways depending upon the message type and optional features that may be enabled or disabled. Text messages are presented on a display 406 while audio signals are presented to the user on a speaker 408.
What is claimed is:

Claims

Claims
1. A battery apparatus having at least two terminals adapted for interconnection to a power consuming device, the battery comprising: at least one cell having two terminals; a circuit carrying substrate for providing connection between the battery terminals and the cell terminals a circuit runner having a pre-determined width and length for establishing a pre-determined resistance disposed on the circuit carrying substrate for providing current limiting between the battery terminals and the cell terminals.
2. The battery apparatus of claim 1 , wherein the circuit runner comprises a fusible link.
3. The battery apparatus of claim 1 , wherein the circuit carrying substrate comprises a flexible substrate.
4. The battery apparatus of claim 1 , wherein the circuit carrying substrate comprises a rigid substrate.
5. The battery apparatus of claim 1 , wherein the circuit runner comprises a runner with 0.1 ohm resistance.
6. A circuit carrying substrate for use in a battery apparatus, the battery apparatus having at least one cell and a plurality of terminals, the circuit carrying substrate comprising: a circuit runner having a pre-determined width and length for limiting the current flow between the plurality of battery terminals and the at least one cell.
7. A battery apparatus having a plurality of discharging terminals adapted for interconnection to a power consuming device and a plurality of charging terminals adapted for interconnection to a power generating device, the battery apparatus comprising: a plurality of battery cells; a circuit carrying substrate coupling the plurality of discharging and charging terminals to the plurality of cells; and a circuit runner disposed on the circuit carrying substrate for limiting the current flow between the cells and the terminals, the runner having a pre-determined resistance proportional to its width and length.
8. The battery apparatus of claim 7, wherein the plurality of battery cells includes a plurality of cells in series.
9. The battery apparatus of claim 7, wherein the plurality of cells includes a plurality of cells mixed in series and in parallel.
10. A communication device, comprising: receiver means for receiving a communication signal; battery means for providing energy to the receiver, the battery means having at least two terminals and comprising: at least one cell having two terminals; a circuit carrying substrate for providing connection between the battery terminals and the cell terminals a circuit runner having a pre-determined width and length for establishing a pre-determined resistance disposed on the circuit carrying substrate for providing current limiting between the battery terminals and the cell terminals.
PCT/US1991/008576 1990-12-21 1991-11-15 Battery apparatus with circuit runner as current limiting device WO1992011679A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US63219390A 1990-12-21 1990-12-21
US632,193 1990-12-21

Publications (1)

Publication Number Publication Date
WO1992011679A1 true WO1992011679A1 (en) 1992-07-09

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PCT/US1991/008576 WO1992011679A1 (en) 1990-12-21 1991-11-15 Battery apparatus with circuit runner as current limiting device

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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2706083A1 (en) * 1993-06-02 1994-12-09 Texas Instruments France Improvements relating to battery unit assemblies.
US5399446A (en) * 1992-06-30 1995-03-21 Sony Corporation Battery cartridge having a terminal for transferring information therefrom
US5415947A (en) * 1992-05-29 1995-05-16 Sony Corporation Battery cartridge having a recess for detecting misuse and/or recessed terminals
US5437938A (en) * 1992-03-06 1995-08-01 Sony Corporation Battery pack
US5465117A (en) * 1992-09-02 1995-11-07 Sony Corporation Connecting apparatus for a video tape recorder having a built-in camera
US5602454A (en) * 1992-09-18 1997-02-11 Sony Corporation Battery pack having identification recesses and terminals
US6075341A (en) * 1999-02-17 2000-06-13 Black & Decker Inc. Power pack charging system for a power tool
US9570929B2 (en) 2010-12-21 2017-02-14 Endress + Hauser Process Solutions Ag Field device with a battery unit
US20170271952A1 (en) * 2016-03-16 2017-09-21 Andreas Stihl Ag & Co. Kg Electronic control unit for operating an electric motor having a braking resistor
US10136542B2 (en) 2016-03-16 2018-11-20 Andreas Stihl Ag & Co. Kg Electromechanical function unit for a battery-operated, handheld work apparatus
US10712009B2 (en) 2014-09-25 2020-07-14 Duerr Systems Ag Burner head of a burner and gas turbine having a burner of this type

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2672498A (en) * 1950-02-28 1954-03-16 Olin Ind Inc Battery
US4035552A (en) * 1976-07-23 1977-07-12 Gte Laboratories Incorporated Electrochemical cell
US4680527A (en) * 1986-08-06 1987-07-14 Motorola, Inc. Electrical battery including apparatus for current sensing

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2672498A (en) * 1950-02-28 1954-03-16 Olin Ind Inc Battery
US4035552A (en) * 1976-07-23 1977-07-12 Gte Laboratories Incorporated Electrochemical cell
US4680527A (en) * 1986-08-06 1987-07-14 Motorola, Inc. Electrical battery including apparatus for current sensing

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5437938A (en) * 1992-03-06 1995-08-01 Sony Corporation Battery pack
US5415947A (en) * 1992-05-29 1995-05-16 Sony Corporation Battery cartridge having a recess for detecting misuse and/or recessed terminals
US5399446A (en) * 1992-06-30 1995-03-21 Sony Corporation Battery cartridge having a terminal for transferring information therefrom
US5465117A (en) * 1992-09-02 1995-11-07 Sony Corporation Connecting apparatus for a video tape recorder having a built-in camera
US5568198A (en) * 1992-09-02 1996-10-22 Sony Corporation Power supplying apparatus for a connecting apparatus and a video tape recorder having a built-in camera
US5602454A (en) * 1992-09-18 1997-02-11 Sony Corporation Battery pack having identification recesses and terminals
US5545491A (en) * 1993-06-02 1996-08-13 Texas Instruments Incorporated Relating to battery pack arrangements
EP0629017A1 (en) * 1993-06-02 1994-12-14 Texas Instruments France Improvements in or relating to battery pack arrangements
FR2706083A1 (en) * 1993-06-02 1994-12-09 Texas Instruments France Improvements relating to battery unit assemblies.
US6075341A (en) * 1999-02-17 2000-06-13 Black & Decker Inc. Power pack charging system for a power tool
JP2012135210A (en) * 1999-02-17 2012-07-12 Black & Decker Inc Power pack charging system and power tool charging system
US9570929B2 (en) 2010-12-21 2017-02-14 Endress + Hauser Process Solutions Ag Field device with a battery unit
US10712009B2 (en) 2014-09-25 2020-07-14 Duerr Systems Ag Burner head of a burner and gas turbine having a burner of this type
US20170271952A1 (en) * 2016-03-16 2017-09-21 Andreas Stihl Ag & Co. Kg Electronic control unit for operating an electric motor having a braking resistor
CN107204724A (en) * 2016-03-16 2017-09-26 安德烈·斯蒂尔股份两合公司 Electronic control unit for making the motor running with braking resistor
EP3223592A3 (en) * 2016-03-16 2017-10-18 Andreas Stihl AG & Co. KG Electronic control unit for operating an electric motor with a brake resistor
US10136542B2 (en) 2016-03-16 2018-11-20 Andreas Stihl Ag & Co. Kg Electromechanical function unit for a battery-operated, handheld work apparatus
US11038402B2 (en) 2016-03-16 2021-06-15 Andreas Stihl Ag & Co. Kg Electronic control unit for operating an electric motor having a braking resistor

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