Method and device for testing a traction battery of an electric vehicle
First Claim
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1. A method for testing a traction battery of an electric vehicle, which battery is both chargeable and dischargeable, the method comprising:
- electrically coupling a mobile testing apparatus that is separate from the electric vehicle to the traction battery of the electric vehicle via a first mobile testing apparatus interface;
generating a control command in the mobile testing apparatus for initiating a discharging process of the traction battery;
monitoring the discharging process of the traction battery;
determining at least one characteristic quantity of the traction battery depending on the monitored discharging process; and
generating a supply voltage from a supply circuit of the mobile testing apparatus for at least one element of the mobile testing apparatus from an energy flow which, during the discharging process, flows via the first mobile testing apparatus interface to the supply circuit of the mobile testing apparatus.
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Abstract
For testing a traction battery (5) of an electric vehicle (1), which battery is both chargeable and dischargeable via a charging-discharging interface (2), a control command for initiating a discharging process of the traction battery (5) is generated. The discharging process is monitored by a testing apparatus (10). At least one characteristic quantity of the traction battery (5) is determined depending on the monitored discharging process.
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Citations
13 Claims
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1. A method for testing a traction battery of an electric vehicle, which battery is both chargeable and dischargeable, the method comprising:
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electrically coupling a mobile testing apparatus that is separate from the electric vehicle to the traction battery of the electric vehicle via a first mobile testing apparatus interface; generating a control command in the mobile testing apparatus for initiating a discharging process of the traction battery; monitoring the discharging process of the traction battery; determining at least one characteristic quantity of the traction battery depending on the monitored discharging process; and generating a supply voltage from a supply circuit of the mobile testing apparatus for at least one element of the mobile testing apparatus from an energy flow which, during the discharging process, flows via the first mobile testing apparatus interface to the supply circuit of the mobile testing apparatus. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. Apparatus for testing a traction battery of an electric vehicle, comprising:
a mobile traction battery tester distinct from the electric vehicle, the mobile traction battery tester including; a mobile traction battery tester interface, the mobile traction battery tester being coupleable to the traction battery of the electric vehicle via the mobile traction battery tester interface, the mobile traction battery tester configured to output a control command for initiating a discharging process of the traction battery and the flow of electrical energy from the traction battery to the mobile traction battery tester via the mobile traction battery tester interface; a monitoring unit associated with the mobile traction battery tester, the monitoring unit coupleable to the mobile traction battery tester interface and configured to monitor the discharging process of the traction battery in response to the control command and to determine at least one characteristic quantity of the traction battery depending on the monitored discharging process; and a supply circuit within the mobile traction battery tester configured to generate a supply voltage for at least one element of the mobile traction battery tester from the electrical energy which, dining the discharging process, flows via the charging-discharging interface to the mobile traction battery tester.
Specification