Apparatus and method for operating a hybrid drive system during an extended braking condition
US-9199647-B2 · Dec 1, 2015 · US
Working machine
US9108516B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9108516-B2 |
| Application number | US-201314134626-A |
| Country | US |
| Kind code | B2 |
| Filing date | Dec 19, 2013 |
| Priority date | Nov 18, 2008 |
| Publication date | Aug 18, 2015 |
| Grant date | Aug 18, 2015 |
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Abstract
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Provided is a working machine capable of decreasing a voltage of a DC busbar (DC bus) with a configuration suppressing a degradation in reliability. A hybrid type construction machine as a working machine includes: a DC bus which is connected to a rotation motor via an inverter circuit, a battery which is connected to the DC bus via a step-up/step-down converter and a switch, a controller which drives the inverter circuit and the step-up/step-down converter, a cooling liquid circulating system which includes a pump motor, and an inverter circuit which is connected to the DC bus and driving the pump motor. The controller includes a mode used for decreasing the voltage of the DC bus, and in that mode, the switch enters a disconnection state and the inverter circuit is operated to consume electricity in the pump motor.
First claim
Opening claim text (preview).
The invention claimed is: 1. A hybrid type construction machine comprising: a running mechanism; an upper rotation body which is rotatably disposed on the running mechanism; a working motor which is driven by an operator's operation; a first inverter circuit one end of which is connected to a terminal of the working motor; a DC voltage converter one end of which is connected to the other end of the first inverter circuit, the DC voltage converter includes a reactor; an e…
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Cross-Sectional Technologies · mapped topic
Operations & Transport · mapped topic
Fixed Constructions · mapped topic
Operations & Transport · mapped topic
Operations & Transport · mapped topic
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Frequently asked questions
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- What does patent US9108516B2 cover?
- Provided is a working machine capable of decreasing a voltage of a DC busbar (DC bus) with a configuration suppressing a degradation in reliability. A hybrid type construction machine as a working machine includes: a DC bus which is connected to a rotation motor via an inverter circuit, a battery which is connected to the DC bus via a step-up/step-down converter and a switch, a controller which…
- Who is the assignee on this patent?
- Sumitomo Heavy Industries, Sumitomo Shi Constr Mach Co
- What technology area does this patent fall under?
- Primary CPC classification B60K6/12. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Aug 18 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).