JP-2026074674-A - control unit

JP2026074674AJP 2026074674 AJP2026074674 AJP 2026074674AJP-2026074674-A

Abstract

[Problem] To provide a control unit that can effectively protect the ground busbar. [Solution] The control unit according to the present disclosure comprises an electronic control unit, a switch for switching the power of the electronic control unit on and off, a ground busbar electrically connected to the electronic control unit, and a protective panel covering the ground busbar, wherein the protective panel is configured to be removable when the power is turned off by the switch. [Selection Diagram] Figure 2

Inventors

伊藤亨知
高橋賢司
久保和樹

Assignees

トヨタ自動車株式会社

Dates

Publication Date: 20260507
Application Date: 20241021

Claims (5)

Electronic control unit, A switch for turning the power of the aforementioned electronic control unit on and off, A ground busbar electrically connected to the aforementioned electronic control device, A protective panel covering the aforementioned ground busbar, A control unit equipped with, The protective panel is configured to be removable when the power is turned off by the switch. Control unit.
A switch box housing the aforementioned switch and capable of being opened and closed, A special tool for removing the protective panel, which is housed together with the switch in the switch box, It also has, The control unit according to claim 1.
The aforementioned special tool is installed in a way that allows it to be removed when the power is turned off by the switch. The control unit according to claim 2.
The system further includes an alarm device that outputs an alarm when it detects user contact with the protective panel while the power is turned ON by the aforementioned switch. The control unit according to claim 1.
The aforementioned electronic control device controls the power supply from a current collection unit that collects electricity stored by multiple energy storage devices to a power conversion device. The control unit according to claim 1.

Description

This disclosure relates to a control unit. Because large currents flow through the ground busbar in the control unit that controls the power supply, it is necessary to ensure the safety of users who inspect or remove the ground busbar by effectively protecting it. For example, Patent Document 1 discloses a device comprising a busbar welded to the electrode terminal of at least one energy storage element among a plurality of battery cells, and a cover member that covers the busbar. International Publication No. 2020/189659 This figure shows an example configuration of a power supply system equipped with the control unit related to this disclosure.This is a schematic diagram showing the contents of the control unit relating to this disclosure, viewed from the front.This is a schematic cross-sectional view of a portion of the contents of the control unit relating to this disclosure.This is a schematic diagram showing a modified example of the contents of the control unit relating to this disclosure, viewed from the front.Figure 4 is a schematic perspective view of the switch box and its housings housed in the control unit shown. The following describes specific embodiments of the present invention in detail with reference to the drawings. However, the present invention is not limited to the following embodiments. Furthermore, for clarity, the following description and drawings have been simplified as appropriate. Figure 1 shows an example configuration of a power supply system 1 equipped with the control unit 20 according to this disclosure. As shown in Figure 1, the power supply system 1 comprises a current collection unit 10, a control unit 20, a plurality of energy storage devices 30, and a power converter 40. This disclosure describes an example where the power supply system 1 is equipped with eight energy storage devices 30. Hereinafter, the eight energy storage devices 30 will also be referred to as energy storage devices 30_1 to 30_8. Note that the right-handed XYZ Cartesian coordinate system shown in Figure 1 is for convenience in explaining the positional relationships of the constituent elements. In Figure 1 and other diagrams, for example, the Z direction is the vertical direction, the XY plane is the horizontal plane, and the X, Y, and Z directions are common across the drawings. The current collection unit 10 collects electricity stored by each of the energy storage devices 30_1 to 30_8 via current collection cables C1 to C8. The electricity collected by the current collection unit 10 is then supplied to the power converter 40 via the power supply cable W1. The control unit 20 controls the supply of electricity collected by the current collection unit 10 to the power converter 40. The power converter 40 converts the voltage of the electricity supplied from the current collection unit 10 to another voltage level, or converts DC voltage to AC voltage. Figure 2 is a schematic front view of the housing of the control unit 20 according to this disclosure. Figure 3 is a schematic cross-sectional view of a portion of the housing of the control unit 20 according to this disclosure. Figure 3 shows the A-A section of the housing of the control unit 20 shown in Figure 2. Inside the control unit 20 (within the enclosure), there are an electronic control unit 201, a switch 202, a ground busbar 204, a cable 205, a protective panel 206, a fastener 207, and a board 209. The electronic control unit 201 is mounted on a board 209 within the control unit 20 and controls the supply of electricity collected by the current collection unit 10 to the power converter 40. For example, the electronic control unit 201 switches the supply of electricity collected by the current collection unit 10 to the power converter 40, or adjusts the amount of electricity supplied to the power converter 40. The ground voltage terminal of the electronic control unit 201 is connected to the ground busbar 204 via cable 205. The ground busbar 204 is mounted on a support base 210 installed on board 209. The ground busbar 204 and cable 205 are secured by fasteners 211. The ground busbar 204 is grounded and, for example, exhibits a voltage of 0V. The electronic control unit 201 operates with the potential of the ground busbar 204 as a reference. The protective panel 206 is provided to cover the ground busbar 204, which carries a large current, to prevent the user from accidentally touching it. In the examples shown in Figures 2 and 3, the protective panel 206 is fixed to the board 209 by fasteners 207 and is provided to cover the lower side and main surface of the support base 210 and the ground busbar 204. The upper side of the support base 210 and the ground busbar 204 is open to allow the cable 205 to pass through. However, the shape of the protective panel 206 is not limited to the shape shown in Figures 2 and 3; it only needs to cover the ground busbar 204. The ground busbar 204 is a metal, plate-shaped component. For example, the ground bus