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Relay assembly with improved heat dissipation and converter device with same

A technology of relays and converters, applied in relays, circuit heating devices, electromagnetic relays, etc.

Active Publication Date: 2021-08-31
SMA SOLAR TECH AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, within the framework of the invention, a higher maximum contact resistance determined during operation of the relay can lead to thermal overloading of the relay components if they are not dimensioned accordingly

Method used

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  • Relay assembly with improved heat dissipation and converter device with same
  • Relay assembly with improved heat dissipation and converter device with same
  • Relay assembly with improved heat dissipation and converter device with same

Examples

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Embodiment Construction

[0033] figure 1 An embodiment of a relay assembly 1 according to the invention with two relays 2, 3 connected in series is shown, wherein the input connections 4, 5 of the circuit (not shown) are connected to the second connections 7, 8 of the relay 3 . If the relay contacts 12 , 11 are closed, current can flow from the connection 8 of the relay 3 to the first connection 10 . The first connection 10 of the relay 3 is connected in series with the first connection 15 of the relay 2 via a surface conductor 13 . The current flows on to the output connection 6 of the relay assembly 1 via the switching contact of the relay 2 and the second connection 18 of this relay.

[0034] On the one hand, the surface conductor 13 establishes the electrical contact between the relays 2, 3 connected in series and through the surface configuration of the surface conductor (see also figure 2 ) and the selection of not only electrically conductive but also thermally conductive materials for diss...

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PUM

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Abstract

The invention relates to a relay assembly (1) comprising: at least two relays (2, 3) connected in series, said relays being connected via a first connection (9, 10, 15, 16) and a second connection (7, 8 , 17, 18) are mechanically and electrically connected to the main circuit board; and at least one surface conductor (13, 14) for conducting current between the at least two series connected relays (2, 3). The surface conductors (13, 14) are mechanically connected to the main circuit board and electrically and thermally connected to the first contacts (9, 10, 15, 16) of the relays (2, 3) so as to realize the connection between the relays (2, 3). 3) The heat generated during operation is exported. The relay module can be used as a grid separation point in a converter arrangement with several inverter bridges.

Description

technical field [0001] The invention relates to a relay assembly with improved heat dissipation and a converter arrangement having said relay assembly and thus for improving the dissipation of heat generated during collector operation, in particular. Background technique [0002] A relay assembly according to the invention has at least two relays connected in series. The relay assembly can be used as a grid disconnection point in a converter arrangement, for example an inverter. For example, inverters, which feed energy from decentralized regenerative sources into the power grid, must be able to be reliably disconnected from the grid in the event of a disturbance in the power grid in order not to endanger personnel working to remove the disturbance. For this reason, there is the criterion that the grid disconnection point is designed to be fail-safe, which means that reliable disconnection is also possible in the event of a relay failure. Therefore, it is common to have tw...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01H47/00H01H50/12
CPCH01H47/004H01H50/12H01B7/421H05K1/0209H05K1/0212
Inventor F·帕彭福斯L·贝特克C·格尔克T·屈赫恩
Owner SMA SOLAR TECH AG
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