To provide a relay welding determination device capable of determining relay welding without using a step-up converter.SOLUTION: A relay welding determination device is mounted on a vehicle which includes an internal combustion engine, a rotating electric machine capable of generating power using power from the internal combustion engine, an inverter for driving the rotating electric machine, a chargeable/dischargeable power storage device, a relay capable of connecting and releasing connection between the inverter and the power storage device, a capacitor connected in parallel between the inverter and the relay, and voltage detection means for detecting a voltage of the capacitor, generates power with the rotating electric machine using the power from the internal combustion engine, performs power control of varying a voltage of the capacitor, and determines presence/absence of welding of the relay.SELECTED DRAWING: Figure 4
【課題】昇圧コンバータを用いずともリレーの溶着判定を行うことができるリレー溶着判定装置を提供すること。【解決手段】リレー溶着判定装置は、内燃機関と、内燃機関からの動力を用いて発電可能な回転電機と、回転電機を駆動するインバータと、充放電可能な蓄電装置と、インバータと蓄電装置との接続及び接続の解除が可能なリレーと、インバータとリレーとの間に並列で接続されたコンデンサと、コンデンサの電圧を検出する電圧検出手段と、を備えた車両に搭載され、内燃機関からの動力を用いて回転電機で発電を行い、コンデンサの電圧を変動させる電力制御を行って、リレーの溶着の有無を判定する。【選択図】図4
RELAY WELDING DETERMINATION DEVICE
リレー溶着判定装置
2022-12-02
Patent
Electronic Resource
Japanese
IPC: | B60W CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION , Gemeinsame Steuerung oder Regelung von Fahrzeug-Unteraggregaten verschiedenen Typs oder verschiedener Funktion / B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / H02H EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS , Schutzschaltungsanordnungen |