JP2020156246A5

JP2020156246A5 -

Info

Publication number: JP2020156246A5
Application number: JP2019053963A
Authority: JP
Filing date: 2019-03-21
Publication date: 2021-04-22
Anticipated expiration: 2039-03-21

Claims

電気機器（１４）に対してそれぞれ並列に接続される第１蓄電池（１１）及び第２蓄電池（１２）と、
前記第１蓄電池及び前記電気機器を繋ぐ第１電気経路（Ｌ１）に設けられた第１スイッチ（ＳＷ１）と、
前記第１電気経路における前記第１スイッチよりも前記電気機器側の接続点（Ｎ１）と前記第２蓄電池とを繋ぐ第２電気経路（Ｌ２）に設けられた第２スイッチ（ＳＷ２）と、
を備える車載電源装置に適用され、この車載電源装置の起動に伴い前記第１スイッチをオン状態にする制御装置（２１）であって、
前記車載電源装置の起動に際し、前記第１電気経路における前記第１スイッチ及び前記第１蓄電池の間の蓄電池側電圧（Ｖ１）が、所定電圧よりも大きい高電圧状態であるか否かを判定する電圧判定部と、
前記第１電気経路における前記電気機器及び前記第１スイッチの間の機器側電圧（Ｖ２）を取得する機器側電圧取得部と、
前記蓄電池側電圧と前記機器側電圧との電圧差（ΔＶ）が所定値より小さいか否かを判定する電圧差判定部と、
前記高電圧状態であると判定された場合に、前記第１スイッチをオン状態にすることを禁止する禁止部と、
を備え、
前記禁止部は、所定期間において一度も前記高電圧状態であると判定されることなく前記高電圧状態ではないと判定された場合には、前記電圧差が前記所定値より小さいか否かに関わらず、前記第１スイッチをオン状態にすることを許容し、
前記禁止部は、前記所定期間において一度前記高電圧状態であると判定された後に前記高電圧状態ではないと判定された場合には、前記電圧差が前記所定値より小さくなるまで、前記第１スイッチをオン状態にすることを禁止する、車載電源装置の制御装置。 The first storage battery (11) and the second storage battery (12), which are connected in parallel to the electric device (14), respectively.
A first switch (SW1) provided in a first electric path (L1) connecting the first storage battery and the electric device, and
A second switch (SW2) provided in the second electric path (L2) connecting the connection point (N1) on the electric device side with respect to the first switch in the first electric path and the second storage battery, and
A control device (21) that is applied to an in-vehicle power supply device and turns on the first switch when the in-vehicle power supply device is activated.
When the in-vehicle power supply device is started, it is determined whether or not the storage battery side voltage (V1) between the first switch and the first storage battery in the first electric path is in a high voltage state larger than a predetermined voltage. Voltage judgment unit and
A device-side voltage acquisition unit that acquires a device-side voltage (V2) between the electrical device and the first switch in the first electric path, and a device-side voltage acquisition unit.
A voltage difference determination unit that determines whether or not the voltage difference (ΔV) between the storage battery side voltage and the device side voltage is smaller than a predetermined value.
A prohibition unit that prohibits turning on the first switch when it is determined to be in the high voltage state, and a prohibition unit.
Equipped with a,
When the prohibition unit is determined not to be in the high voltage state without being determined to be in the high voltage state even once in a predetermined period, it does not matter whether the voltage difference is smaller than the predetermined value. Instead, allow the first switch to be turned on,
When the prohibited portion is once determined to be in the high voltage state in the predetermined period and then determined not to be in the high voltage state, the first prohibition unit is used until the voltage difference becomes smaller than the predetermined value. A control device for an in-vehicle power supply that prohibits the switch from being turned on.

前記電気機器は、平滑コンデンサ（１４ｂ）を有しており、前記電気機器と前記第１蓄電池との間には、前記第１スイッチと並列にバイパス経路（Ｂ）が設けられている、請求項１に記載の車載電源装置の制御装置。 The electrical device has a smoothing capacitor (14b), between the first battery and the electrical device, the bypass passage (B) is provided in parallel with the first switch, claim The control device for an in-vehicle power supply device according to 1.