DE102008050496A1 - Network separation switch for use in e.g. loading device of battery, has control switch opening network switch by impulse, where energy supply is provided for control switch during building of connection between load and electrical network - Google Patents

Abstract

The switch has a control switch (1) closing a network switch (11) e.g. Opto triac, by an impulse (31) for connecting a load (2) with an electrical network (4). The control switch opens the network switch by the impulse for separating the load from the network such that control switch is separated from the network. An energy supply is provided for the control switch during building of a connection between the load and the network. A sound impulse generator (3) produces a connection between the network and the control switch during activation.

Description

The The invention relates to a network disconnecting circuit consisting of a control circuit with a power switch and a connected thereto Consumer and a switching pulse generator, by the first Pulse the control circuit closes the power switch and thereby connecting the consumer to an electrical network and through the second pulse opens the power switch and disconnects the consumer from the mains.

since the introduction of electrical equipment and others electrical loads are known connectors and switches, with which the devices and consumers of the electrical network be disconnected because some electrical appliances consume even then electrical energy, if its main function is like z. B. to light television pictures to heat food or washing clothes, has long been disabled. This energy is also called "stand-by loss" and is consistently very small compared to the operating consumption of the device. Due to the variety of electrical appliances and the length However, during breaks, these losses add up to one Overall very large savings potential.

By a mains disconnector is achieved that certainly no Electrical energy is consumed when not needed becomes.

On It has become customary in the current state of the art to use a manually operated, electrical switch, mechanical the electrical connection opens and closes, by a touch contact or a remote control to replace, so that only one pulse for switching is delivered.

Of the Advantage of a tactile contact is that it has lower actuation forces requires as a mechanical switch, the large currents can switch directly. Another advantage is the lower cost of one Tastkontaktes. As a rule, this contact is not the whole Must turn on power, but only as a control for one Power switch, it can be very small and inexpensive executed and designed freely.

Of the Advantage of a remote control is that the user is not personal to strive for the device, but more comfortable Activate and deactivate the way even from a distance can.

at both variants must have an electronic module, which receives the switching pulse of the button or the remote control, for what always an inflow of energy is needed, even if that thus connected device actually no energy requirement Has.

On the current state of the art, the patent application EP 0 994 558 , Urs Künzle, a "saving circuit for a power supply" before, in which a transformer and an adjoining rectifier are operated in a pulsed standby mode. In this case, a power disconnect circuit with a pulse generator and a switching logic supplies the transformer only temporarily.

One The main disadvantage is that the switching logic and the pulse generator constantly connected to the network and therefore up Consuming duration of energy. An operation absolutely without any energy extraction from the net is impossible.

Another power supply with a saving of energy is the patent US 6,445,090 , Toshiharu Mori in front. About inductances and a moving iron core of the power switch is released when not in use of energy. A restart of operation requires in principle that the user mechanically actuates the switch and thereby directly establishes a network contact.

adversely is that only the introduction of an impulse is not enough. Therefore this circuit is neither for operation via a touch contact still suitable for combination with a remote control. Much more the functional core of the patent has been in principle for a long time known switch, which is electromagnetically deactivated.

On this background, the invention has set itself the task a power disconnect circuit for power consumption of the electrical appliance to develop, which can be activated by a switching pulse alternately and can be deactivated and then, if by the electrical appliance No energy is needed to make sure that at all no electricity is taken from the grid.

When Solution presents the invention that together with the disconnection of the consumer from the network also the control circuit disconnected from the network and establishing a connection between consumers and network a power supply for the control circuit is available.

The most important feature of the invention is thus the separation of the control circuit from the network. Thus, no current flows into the control circuit even in the currentless breaks of the consumer. In all other control circuits known in the state of the art, the control circuit itself always consumes energy. Although this energy is very small, usually in the range of a few milliamps, so this power consumption over very long break times of the consumer and over a large number of electrical consumers still add up to a considerable value energy loss and thus to a significant increase in the operating costs of electrical equipment. The savings that can be achieved thereby are not only important for an economy, but also for the user of the electrical device over a longer period of operation.

A Net disconnecting circuit according to the invention can both be set up as a separate device, then the power supply from older devices with too high power consumption can be used in the disabled state or they can from the outset Be part of an electrical appliance. Here are the most diverse Embodiments possible and useful.

In In any case, the control circuit is an electronic circuit, the However, adapted to the respective boundary conditions and for Additional functions is extended accordingly.

In In one embodiment, the power switch is a relay, so a current-carrying coil that attracts a switch, the then an electrically conductive connection between two Contacts. To maintain this contact in the long run, The coil must also be permanently energized. Therefore is a so-called "self-retention" in the electronic Control circuit makes sense.

In Another variant is the power switch a triac or other electronic circuit breaker. One Triac consists of two anti-parallel connected thyristors, over two ignition or auxiliary thyristors in the low-resistance, so be conductive state. Instead of a galvanic Activation indicates the "opto-triac", also called "photo-triac", a light emitting diode on to the pn junctions of two thyristors via the photoelectric effect with Flood charge carriers and thus conductive to do. This creates a galvanic separation between control and load circuit possible, so a network connection with a typical voltage level of z. B. 230 volts through a electronic control circuit with a typical voltage level of 5-12 volts can be controlled. For larger ones Currents are discrete thyristors used.

In A possible embodiment is called a switching pulse generator a button is used, which is operated by the user. at Activation of the button will establish a connection between the network and the control circuit produced, whereby the control circuit with Energy is supplied. In this embodiment provides the control circuit not only for a connection of the consumer with the network but also for their own energy supply from the grid as long as the consumer is active.

If the consumer no longer needs any power and the control circuitry over the power switch disconnects the connection between the consumer and the network, In addition, it also raises the connection between the control circuit yourself and the network. It makes sense that this is the last step in the process of switching off.

In In another embodiment, the switching pulse generator a receiver that receives signals from a remote control receives. In this variant, the user of the Consumer the switching pulse for activation or deactivation the power disconnect circuit via the remote control. The remote control sends this pulse to the receiver in the switching pulse generator, which then establishes the connection between the consumer and the network or dissolves. As in this variant of an inventive Mains circuit of the switching pulse generator in the deactivated operating state the consumer solves his own connection to the network needed he has his own, small power supply, even in the deactivated Operating state of the consumer receive the pulse of the remote control to be able to.

there In principle, it is arbitrary, like the signal from the remote control is transmitted to the receiver. So it can z. B. by infrared or as another optical signal or per Ultrasound or with another acoustic signal or by radio or with another electromagnetic signal from the remote control be sent.

Of the above energy storage in the switching pulse generator is z. B. a battery that consumes a very small amount of energy continuously, to always be ready for the remote control to be ready and when activated, trigger the switching pulse for the mains switch to be able to.

In order to this battery will be recharged on time strikes the invention provides that the control circuit voltage monitoring contains, which falls below a minimum voltage the Battery via a charger to the mains electric connects and after completion of the charge the connection with releases the network again. This will ensure that the control circuit in the deactivated operating state of the consumer after as it is almost always disconnected from the network. Only in the - very short - charging cycles of the battery, it consumes network power.

With regular use of the power disconnect circuit can be completely dispensed with a recharge in the off phase, as the battery during the switched-on phase again and again is reloaded. Only if the mains isolation circuit is not activated for several days or weeks, the minimum voltage will be recharged, so that the operational readiness is maintained.

in the Comparison to the control circuits known in the art, which are constantly connected to the grid, is the energy consumption of these Embodiment of the invention in the long term clearly lower, since the efficiency of a large distances charged battery, which then over a very long time a very low power output, is significantly better than the efficiency of a power supply that has been using for a very long time relatively tiny stream is claimed.

Around can achieve more energy savings, the control circuit be extended with additional functionalities. One option is a timer that disconnects triggers off the grid when a time limit is exceeded is.

These Time limit can be linked with other functionalities which detect operating conditions in which an electrical Consumer can be disconnected from the mains.

Examples for it are devices of the entertainment electronics, such as radios, DVD players, televisions or game consoles. Very often the users become the Change radio stations, jump to another TV channel, the Change the direction of play of the DVD or the joystick of a game console actuate. If such a user activity takes place, the power consumption of the corresponding circuits, what can be detected in the power disconnect circuit. At every activity the off-line timer is reset to zero and running from there again high, until the set limit is reached is. When it is reached, it is assumed that the user left the device without turning it off. The control circuit takes over then for him the switching off of the respective device. Alternatively, the total energy consumption of devices can be monitored when it can be deduced whether they are still active be used or not.

In another variant can be selected on the power disconnect circuit whether disconnection from the grid occurs only when the time limit is exceeded or if within that time limit the consumer has no Energy demand message gives more to the power disconnect circuit.

there the time limit can either be fixed or in the Control circuit can be selected from several fixed values or gradually increased.

A Another alternative for the activation of the network deactivation is a receiver for the signals of a remote control of the consumer to be controlled. Any received from the remote Signal is interpreted as an energy demand message, whereupon the timer for the power disconnect circuit again and again 0 is set. This variant also assumes that one regular use of the remote control a safer Indicator of the use of the device.

When Another indicator for the use of an electrical device can be judged that the users are moving. Therefore serves a motion detector in the power disconnect circuit, which prevents any movement of a person using the consumer. Every movement is passed as an energy demand message to the control circuit. Alternatively, the weight of a person using a contact is detected, for. B. a seat contact. It is conceivable also a light barrier that checks the presence of a person.

To the previously listed variants that have an activity of the user as an energy demand message, should be considered as another Option also a continuous operation without user activity selectable which of course the user is responsible for the timely shutdown of the respective device itself auflastet.

As mentioned is a network separation circuit according to the invention Also useful as a separate module, with the existing Electrical appliances can be operated energy-saving. For this she can z. B. be installed in an adapter, the on one outer surface with a power plug and on the other outside surface with a power outlet is provided.

A Net disconnecting circuit according to the invention can also be integrated into a distribution box, the over a cable is connected to a power outlet and in turn several Includes power outlets.

At the Housing such an intermediate connector or such Distribution socket can be connected to a sensor via a cable Energy demand message to be connected. This variant is natural only useful for power consuming devices that over have a corresponding output.

The power disconnecting circuit according to the invention can - as mentioned - also be installed directly in electrical appliances. An example is a battery charger. There is the charging circuit during the Charging time an energy request message to the control circuit, which is switched off again after completion of the charging process.

One Another example is a TV with remote control. Each time you press the remote control, the TV will turn on integrated power disconnect circuit a renewed energy demand message receive.

in the Following are further details and features of the invention will be explained in more detail with reference to an example. This is not intended to limit the invention, but just explain. It shows in a schematic representation:

1 Block diagram of a network separation circuit according to the invention

In 1 is the block diagram of a network separation circuit according to the invention drawn in a variant with a remote control and a time-controlled separation.

On the left side is as block the electrical network 4 shown. About two wires is connected to the power disconnect circuit. Within the power disconnect circuit, a wire runs directly through to the load 2 , In the other vein between the net 4 and the consumer 2 is the power switch 11 switched, in this embodiment, a relay with the coil 12 that through the control circuit 1 is switched.

The control circuit 1 basically contains a switching pulse generator 3 and as equipment variant, a timer for compliance with a time limit 5 , After expiry of the set time limit 5 becomes the control of the power switch 11 about the contact 51 open and allow the power switch to open, allowing the consumer 2 from the network 4 is disconnected.

The switching pulse generator 3 contains the recipient 32 that receives the signals from a remote control 33 receive and you in the impulse 31 which converts the power switch 11 activated and deactivated.

Within the switching pulse generator 3 are the switching pulses 31 shown schematically as the course of the voltage over time.

At the first impulse 31 and every other odd number of pulses 31 will the in 1 Contact drawn at the bottom 34 closed, leaving the battery 6 and the coil 12 designed as a relay power switch 11 the connection between the network 4 and the consumer 2 is closed.

About another, from the relay coil 12 moving contact 36 becomes the coil 12 of the relay with the battery 6 connected. The energy for the operation of the coil 12 comes from the battery 6 , By this so-called latching the relay remains in the activated state even when the pulse 31 from the receiver 32 is switched off again.

Every second and every even number of pulses 31 - in 1 at the bottom right within the power cut-off circuit - is the control for the coil 12 of the power switch 11 by opening the contact 31 interrupted. This opens the power switch 11 and thus interrupts the contact between the consumer 2 and the network 4 ,

Additionally is in 1 a timer is entered, which after exceeding the time limit 5 the supply of the coil 12 of the power switch 11 Activation of the power switch 11 opens and thus also for a separation of the consumer 2 from the network 4 provides.

1

control circuit

11

Power switch, is controlled by control circuit 1 controlled

12

Coil of the power switch 11 when executed as a relay

2

Consumer, gets off the power switch 11 with the net 4 connected

3

Switching pulse generator

31

Pulse of the switching pulse generator 3

32

Receiver in the switching pulse generator 3

33

Remote control, sends signals to the receiver 32

34

Contact for activating the coil 12 over the first and all odd impulses 31

35

Contact for deactivating the coil 12 about the second and all even-numbered impulses 31

36

Contact for self-holding of the coil 12

4

Network, electrical, supplies consumers 2

5

time limit for network separation

51

Contact, when exceeding the time limit 5 open

6

Battery, supplies receiver 32

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• EP 0994558 [0008]
• - US 6445090 [0010]

Claims (20)

Network disconnecting circuit, consisting of - a control circuit 1 with - a power switch 11 and - a connected consumer 2 and a switching pulse generator 3 , - by its first impulse 31 the control circuit 1 the power switch 11 closes and thereby the consumer 2 with an electrical network 4 connects and - through its second impulse 31 the power switch 11 opens and the consumer 2 from the network 4 separates, characterized in that, together with the separation of the consumer 2 from the network 4 also the control circuit 1 from the network 4 is disconnected and in building a connection between consumers 2 and network 4 a power supply for the control circuit 1 is available. Network disconnecting circuit according to the preceding claim 1, characterized in that the power switch 11 a relay and the control circuit 1 includes a latch for the relay. Network disconnecting circuit according to the preceding claim 1, characterized in that the power switch 11 - a triac or - is another electronic circuit breaker. Network disconnecting circuit according to one of the preceding claims, characterized in that the switching pulse generator 3 is a button that, when activated, connects the network 4 and the control circuit 1 manufactures. Network disconnecting circuit according to one of the preceding claims, characterized in that the switching pulse generator 3 - a receiver 32 which has signals from a remote control 33 receives - transmitted by infrared or other optical signal or - by ultrasound or other acoustic signal or - by radio as electromagnetic signal and - a battery 6 to his supply contains. Network separation circuit according to the preceding claim 5, characterized in that the control circuit 1 contains a voltage monitoring, - which falls below a minimum voltage, the battery 6 via a charger to the mains 4 connects electrically and - after completion of the charging process, the connection to the network 4 releases again. Network disconnect circuit according to one of the preceding claims, characterized in that by the control circuit 1 a disconnection from the network 4 is triggerable when a time limit 5 is exceeded. Network disconnecting circuit according to one of the preceding claims, characterized in that the separation from the network 4 is triggered if after exceeding the time limit 5 the consumer 2 there is no energy demand message to the power disconnect circuit. Network disconnect circuit according to one of the preceding claims, characterized in that it is possible to select whether the disconnection from the mains 4 - only then happens when the time limit 5 is exceeded or - if within this time limit 5 the consumer does not give an energy demand message to the power disconnect circuit. Network disconnecting circuit according to one of the preceding claims, characterized in that the time limit 5 - is fixed or - is selectable from several fixed values or - can be preselected in stages. Network disconnecting circuit according to one of the preceding claims, characterized in that a receiver for the signals of a remote control of the consumer 2 is installed, can be passed through the received signals of this remote control as an energy demand message. Power disconnect circuit according to one of the preceding claims, characterized in that a motion detector is installed, - can be detected by the movements of a person, the consumer 2 uses and - through which every recorded movement can be passed on as an energy demand message. Power disconnect circuit according to one of the preceding claims, characterized in that a contact is installed, through which the weight of a person can be detected, the consumer 2 uses and during a recorded minimum load of this contact an energy demand message can be passed. Power disconnect circuit according to one of the preceding claims, characterized in that a light barrier is incorporated, through which the presence of a person is detected, the consumer 2 and an energy demand message can be forwarded during a recorded presence. Network disconnection according to one of the before going claims, characterized in that it is installed in an intermediate plug, which is provided on the one surface with a power plug and on another outer surface with a power outlet. Network separation circuit according to the preceding claim 16, characterized in that the housing of the intermediate connector over a cable connected to a sensor for detecting an energy demand message is. Network disconnection circuit according to one of the preceding Claims, characterized in that they are in a distribution socket is installed with multiple power outlets and the distributor over one Cable and a power plug with a power outlet is connectable. Network disconnection circuit according to one of the preceding Claims, characterized in that they are in a housing is installed for installation in distribution cabinets or is designed for mounting on DIN rails. Power cut-off circuit according to one of the preceding claims, characterized in that it is in the consumer 2 is installed. Power disconnect circuit according to one of the preceding claims, characterized in that it is installed in a battery charger, and the charging circuit during the charging process, an energy demand message to the control circuit 1 and after completion of the charging process, this energy demand message turns off.