Device for operating a direct current voltage converter
A DC voltage and converter technology, applied in the direction of electrical components, circuit devices, transportation and packaging, etc., can solve problems such as device damage, device destruction, interference, etc.
Active Publication Date: 2019-04-16
HELLA KG HUECK & CO
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Problems solved by technology
[0003] However, it is often disadvantageous that a fault, such as a ground disconnection, can destroy the device (ie in particular the DC converter and the control electronics)
In particular, a short circuit of the signal ground or the power ground to the supply line can cause damage to the device when the DC voltage converter is in standby (where a current flow from one ground to the other can occur)
Furthermore, in the event of an open ground, high currents may flow through electrical connections which are not designed for such high currents
This may also cause damage to and interference with the device
In addition, it is often problematic that, for example, communication between the control electronics and the vehicle is not possible when the ground is disconnected
Method used
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[0049] exist figure 1 and 2 Components of a device 10 according to the invention for operating a DC voltage converter 20 are schematically shown in FIG. here, in figure 1 shows normal operation in I, and in figure 2 Fault run II is shown in .
[0050] The direct voltage converter 20 is electrically connected to the control unit 12 , in particular to control electronics of the control unit 12 , via at least one electrical connection. The control electronics of the control unit 12 are thus able to activate and deactivate (ie switch to standby operation) the DC voltage converter 20 . This therefore corresponds to normal operation I in which power ground connection 32 is established for proper operation of DC converter 20 . Power ground connection 32 connects at least DC converter 20 and in particular also control unit 12 via internal connection 30 to an (external) ground potential 35 , preferably to vehicle ground 35 . Furthermore, an internal potential (or internal ground...
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The invention relates to a device (10) for operating a direct current voltage converter (20). The device includes at least: a power mass connection (32) for electrical connection of at least the direct current voltage converter (20) to an earth potential (35), wherein in a normal mode (I) the power mass connection (32) is produced completely, and in an error mode (II) the power mass connection (32) is at least partially restricted or interrupted; a control unit (12) for detecting the error mode (II); and a signal mass connection (31) for electrical connection of at least the control unit (12)to the earth potential (35) in error mode (II), wherein a mass circuit breaker unit (11) is provided, which can be brought into a closed state, such that the signal mass connection (31) is produced, and can be brought into an open state, such that the signal mass connection (31) is interrupted. According to the invention, the mass circuit breaker unit (11) is controllable by the control unit (12)as a function of the detection of the error mode (II), such that in the normal mode (I) the mass circuit breaker unit (11) is always in the open state.
Description
technical field [0001] The invention relates to a device for operating a DC voltage converter of the type specified in the preamble of claim 1 . Furthermore, the invention relates to a method for operating a DC voltage converter. Background technique [0002] Direct voltage converters are known from the prior art, which are used, for example, to interconnect different networks, in particular on-board networks of vehicles. The DC voltage converter and the control electronics for controlling the DC voltage converter are usually connected to a common ground potential via a power ground connection. [0003] However, it is often disadvantageous here that faults, such as a ground disconnection, can lead to destruction of the device (ie in particular the DC converter and the control electronics). In particular, a short circuit of the signal ground or the power ground to the power supply line while the DC voltage converter is on standby may result in damage to the device (where a ...
Claims
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Login to View More IPC IPC(8): H02M1/32B60R16/03H02H5/10
CPCH02H7/1213H02M1/32H02M1/325
Inventor M·隆纳科尔A·迪克J·特拉特里克S·波尔泽纽斯
Owner HELLA KG HUECK & CO