DE102019124211A1 - power adapter - Google Patents

Abstract

The invention relates to a power supply unit (2) for connecting a charging station to a device, the charging station being designed to provide the device with electrical energy, the power supply unit (2) having a plug (4) with an input (6) and an output ( 8), the input (6) being connectable to the charging station via a connection, the plug (4) being connectable to the device via the output (8), charging electronics (18) in the plug (4), which has several lines, and an overvoltage protection module (20) is arranged, the overvoltage protection module (20) being arranged between the charging electronics (18) and the input (6) of the plug (4) and having at least one safety line, the lines of the charging electronics ( 18) connects.

Description

The invention relates to a power supply unit.

A vehicle that is electrically powered has a battery that can be charged with electrical energy from a charging station. For this purpose, the charging station is connected via a cable to a plug-in power supply that can be plugged into an interface of the vehicle so that the electrical energy from the charging station is made available to the vehicle via the cable and the plug-in power supply.

The pamphlet DE 10 2013 220 197 A1 describes a charging system for charging an electrical storage device of a vehicle.

The pamphlet DE 10 2017 212 435 A1 describes an adapter device for a vehicle and a method for charging a vehicle.

The pamphlet DE 10 2013 201 570 A1 describes an overvoltage protection device for protecting an on-board network of an electric vehicle.

Against this background, it was an object to reliably provide electrical energy to a device.

This object is achieved by a power pack with the features of claim 1. Embodiments of the power supply unit emerge from the dependent claims and the description.

The power supply unit according to the invention is designed to connect a charging station as a charging device to a device, the charging station being designed to provide the device with electrical energy. The power supply unit has a plug with an input and an output, the input being temporarily and releasably connectable or to be connected to the charging station via a current-conducting connection designed, for example, as a charging cable, the plug being temporarily connected to the device via the output and is releasably connectable or connectable again. Charging electronics, which are designed for several outputs, and an overvoltage protection module are arranged in the plug, the overvoltage protection module being arranged between the charging electronics and the input of the plug, the overvoltage protection module facing the connection, e.g. the charging cable. The charging electronics are arranged between the output of the plug and the overvoltage protection module. The overvoltage protection module has at least one safety line that connects the lines of the charging electronics.

The overvoltage protection module has at least two varistors and thus at least two voltage-dependent electrical resistors. The two varistors can be connected in series along at least one primary safety line between two lines or conductors of the charging electronics. A first of the two lines of the charging electronics is designed, for example, as an external line and / or as a phase line. A second of the two lines of the charging electronics is designed as a neutral line.

The overvoltage protection module has at least one gas discharge tube which is arranged along at least one secondary safety line. The gas discharge tube can connect a further line, for example an earth line and / or protective line, of the charging electronics to a section and / or node of the primary safety line which is arranged between two of the at least two series-connected varistors.

The said lines, d. H. the external line and / or the phase line, the neutral line and the earth line and / or the protective lines also run through the overvoltage protection module or cross it. Furthermore, the lines connect the charging electronics to the input of the plug and also to a charging station which is connected to the plug at the input of the plug. The lines can be or are to be connected to additional lines in the charging cable as an electrically conductive connection and also to the charging station.

At least one plug connector is arranged at the outlet of the plug. The plug can have a first plug connector or several different first plug connectors at its output. A plug connector is designed as an industrial or multi-phase plug connector for a high voltage with several phases. Alternatively or in addition, a plug connector is designed for a low voltage.

Furthermore, a further, second plug connector is arranged at one end of the charging cable as a connection which can be assigned or assigned to the charging station as a charging device and faces away from the plug. The further plug connector is designed as an industrial or multi-phase plug connector for a high voltage with several phases. Alternatively, the further, second plug connector is designed for a low voltage.

The charging electronics are designed and / or designated as power electronics.

In addition, the connection, for example designed as a charging cable, is inductive.

The power supply unit is designed, for example, for charging a device designed as a vehicle, for example for charging a battery or an accumulator of the vehicle.

With the presented, for example, integrated power supply unit (integrated power plug charger), it is possible to charge an electrically powered vehicle as a device with electrical energy and also to protect it from overvoltage and, for example, a lightning strike.

The power supply unit, which has the plug and, in an embodiment, also the charging cable, is designed to robustly protect the electrically powered vehicle or an electric vehicle against the influence of an overvoltage on the infrastructure side, which can result in the charging station as an infrastructure device. In addition, it is also possible to use the overvoltage protection module to protect the charging electronics within the plug of the power supply unit from being destroyed by overvoltage, the overvoltage protection module being designed to divert an overvoltage. The charging electronics within the plug can also be designed and / or referred to as power electronics. The overvoltage protection module for overvoltage discharge can be integrated into the plug directly at the input, for example at an alternating voltage input (AC input) or direct voltage input (DC input). It is provided that the charging electronics can only be connected to the charging station via the lines that run through the overvoltage protection module and via which at least one safety line of the overvoltage protection module is connected to one another. Such an arrangement prevents the overvoltage from the charging station from penetrating into the charging electronics of the plug and further into the vehicle connected to it as a device.

It is thus possible, when charging the device from the charging station, for the charging electronics and the device, which is usually designed as an electric vehicle, to be protected from a transient overvoltage on the network side and thus on the charging station side. Such an overvoltage can be caused by a thunderstorm near the charging station. This is also possible if a lightning bolt hits the charging station directly or indirectly, i.e. H. at some distance from the charging station, as the electric vehicle is also protected from destruction in this case.

An active charging process of the device is not interrupted, so that the electrical energy is available. It is also possible to protect a person or a driver who connects the vehicle to the charging station via the power supply unit. Overall, the robustness of an entire charging system, which can include the charging station and the power supply unit, is increased. With the intended charging process, a safe condition is guaranteed even in the event of overvoltage and thunderstorms.

As components along the at least one primary safety line, the overvoltage protection module can have at least one metal oxide varistor and thus an electrical component with at least one electrical voltage-dependent resistor that is designed and / or designated as a voltage-dependent resistor (VDR) can be. Furthermore, the overvoltage protection module can have an overvoltage gas arrester as a gas arrester along the at least one secondary safety line.

Here it is possible in an embodiment that several, for example two varistors are combined in the at least one primary safety line, which connects them in series or in which they are appropriately integrated. Usually, the overvoltage protection module connects a phase and / or external line (L line and / or P line) and a neutral line (N line) of the charging electronics along the at least one primary safety line, with the varistors in a series circuit along the at least one primary Safety line are connected between the two lines or conductors mentioned. Electrical voltage can be diverted to earth via the safety lines or protective conductors which, in addition to the series connection of the varistors, also have the gas discharge tube. This gas arrester is arranged along the at least one secondary safety line, which on the one hand connects a node along the at least one primary safety line between the series-connected varistors and on the other hand a ground line and / or protective line (PEN line) of the charging electronics.

In one embodiment, the power supply unit has a three-phase design, and the overvoltage protection module can be constructed symmetrically from three primary safety lines, each with a series connection of varistors. The fast varistors are designed to pass an overvoltage and to immediately and effectively protect the device as a consumer by a short circuit between the charging cable, which is arranged as a current-conducting connection between the plug and the charging station. It is provided that the gas discharge tube is ignited and the electrical energy is safely diverted to earth. In addition, the varistors are designed to prevent a subsequent current in the network after an arc has been extinguished in the gas discharge tube, ie in an electrical connection between the charging station and the device. It is also provided that the gas discharge tube connected to a respective primary safety line of the varistors along a respective secondary safety line also prevents and / or prevents undesired leakage currents due to its high insulation resistance. Such leakage currents represent a loss of energy in the charging system or a corresponding system. It must be taken into account that the leakage currents prevented by the gas discharge tube can otherwise cause and / or at least accelerate corrosion of a grounding system.

The plug of the power supply unit can be designed or referred to as a direct current or DC combo charger. The power supply unit, which comprises the charging cable and the plug as components, is designed to convert a network-side AC voltage as the infrastructure voltage of the charging station into a DC voltage as the charging voltage for the device. Alternatively, the plug of the power supply unit can be designed as an alternating current or AC plug.

Since the charging electronics are already integrated in the plug, they can be dispensed with in the device, for example in particular in an electric vehicle. The device can thus be charged by the direct voltage or by a direct current, the power supply unit being designed as a DC or direct current charging interface between the charging station or a corresponding charging column and the vehicle.

Furthermore, it is possible to use the power pack consisting of plug and charging cable independently of the charging station, as it can be temporarily connected to any charging station that provides an alternating voltage or an alternating current (AC) with its second plug connector as an input plug. This means that lightning protection can also be omitted in the charging station, as this is already integrated into the plug.

The power supply unit as charging equipment with integrated charging electronics and integrated overvoltage protection module is portable and therefore easy to transport, so that it can also be transported as an interface in the vehicle as a device. It is also possible that an inductance of the charging cable can also be used for an input filter measure against the overvoltage. Depending on the definition, the power supply unit can be designed and / or used as an adapter between the charging station and the device. By providing the charging electronics and the overvoltage protection module in the plug, active conversion of the electrical energy that is transmitted from the charging station to the device is also possible in the plug. Thus, depending on requirements, the charging electronics can convert an alternating voltage into a direct voltage or a direct voltage into an alternating voltage.

The device for which the power supply unit can be used can be designed as an electric vehicle (BEV, battery electric vehicle) or a hybrid vehicle (PHEV, plug-in hybrid electric vehicle). The vehicle can be charged either with direct current or alternating current via the power pack. In this case, a direct current charging functionality is implemented via direct current connection pins of a plug connector at the output of the plug or a corresponding charging socket, whereby inter alia. DC fast charging with a power greater than 150 KW is also possible. The charging electronics within the plug can have a power converter, which is thus also integrated directly into the stretcher, whereby an alternating current charging functionality can also be implemented with the power converter of the charging electronics.

The charging electronics integrated in the plug as power electronics can be and / or connected to the AC voltage of the charging station via the overvoltage protection module. The plug and thus the power supply unit can be single-phase with three lines (L, N, and PE) of the charging electronics for transmitting a direct voltage and / or low voltage, or also multi-phase with at least five lines (L1, L2, L3, N and PE), depending on the expansion stage ) the charging electronics be designed to transmit an alternating voltage and / or high voltage. It is also provided that a microcontroller (μC) is integrated as a computing unit in the charging electronics, which is designed to monitor communication with the device to be charged and also to control the charging electronics as power electronics and thus their operation when the device is charging to control and / or regulate with electrical energy from the charging station. The overvoltage protection module between the charging electronics and the input of the plug is designed as a fuse element to protect the plug and the device from an overcurrent.

Since the charging electronics are integrated according to the invention in the plug of the power supply unit, an on-board charger (OBC) on the vehicle can be dispensed with in the device, which is designed, for example, as a vehicle. By providing the overvoltage protection module in the plug, protection against overvoltages is nevertheless ensured. When the power supply unit is in operation, the AC voltage provided by the charging station on the network side is fed into the plug of the power supply unit and there converted into a DC voltage by the charging electronics.

An overvoltage in the network and thus in the charging station can result from a load fluctuation or a lightning strike. However, even if an overvoltage occurs, the overvoltage protection module hardware can be installed in the plug, i. H. the charging electronics, but also the hardware of the device are protected. It must be taken into account here that a risk of overvoltage due to a lightning strike can not only be measured at one point of the lightning strike, but damage to the device to be charged could also be caused a few hundred meters away from the charging station presented power supply is prevented.

Furthermore, it must be taken into account that a vehicle is too valuable as a device and the investment to acquire it is too high to take a risk of damage from overvoltage due to a lightning strike while the vehicle is being charged. An electrically powered vehicle usually has a dielectric strength of up to 2500 volts. However, more than 20 times the voltage can occur in the event of a lightning strike. However, the overvoltage protection module in the plug also realizes an overvoltage or lightning protection circuit at the AC input of the plug or plug-in power supply (PPC, power plug charger).

Usually n + 2 lines cross the overvoltage protection module, these n + 2 lines connecting the charging electronics to the input of the connector. In this case, the n + 2 lines comprise at least one external line or n external lines or phase lines, d. H. with n = 1, for example, one external line or phase line, and with n = 3, for example, three external lines or phase lines as at least one line of the charging electronics. In addition, these n + 2 lines also include a neutral line and a protective or earth line. Each external or phase line is connected to a first varistor via a first primary safety line. In addition, the neutral line is connected to another varistor via another primary safety line. This further primary safety line with the further varistor is also connected to at least one above-mentioned primary safety line and the first varistor. In addition, the further primary safety line is connected to the secondary safety line, the gas discharge tube and the safety or earth line as the line for the charging electronics.

Further advantages and embodiments of the invention emerge from the description and the accompanying drawings.

It goes without saying that the features mentioned above and those yet to be explained below can be used not only in the respectively specified combination, but also in other combinations or on their own, without departing from the scope of the present invention.

• 1 zeigt in schematischer Darstellung eine erste Ausführungsform des erfindungsgemäßen Netzteils.
• 2 zeigt in schematischer Darstellung eine Überspannungsschutzschaltung einer zweiten Ausführungsform des erfindungsgemäßen Netzteils.
• 3 zeigt in schematischer Darstellung eine Überspannungsschutzschaltung einer dritten Ausführungsform des erfindungsgemäßen Netzteils.
• 4 zeigt in schematischer Darstellung eine Überspannungsschutzschaltung und eine Ladeelektronik einer vierten Ausführungsform des erfindungsgemäßen Netzteils.
• 5 zeigt in schematischer Darstellung eine fünfte Ausführungsform des erfindungsgemäßen Netzteils.
• 6 zeigt in schematischer Darstellung eine sechste Ausführungsform des erfindungsgemäßen Netzteils.
• 7 zeigt in schematischer Darstellung eine siebte Ausführungsform des erfindungsgemäßen Netzteils.

The invention is shown schematically on the basis of embodiments in the drawings and is described schematically and in detail with reference to the drawings.

• 1 shows a schematic representation of a first embodiment of the power supply unit according to the invention.
• 2 shows a schematic representation of an overvoltage protection circuit of a second embodiment of the power supply unit according to the invention.
• 3 shows a schematic representation of an overvoltage protection circuit of a third embodiment of the power supply unit according to the invention.
• 4th shows a schematic representation of an overvoltage protection circuit and charging electronics of a fourth embodiment of the power supply unit according to the invention.
• 5 shows a schematic representation of a fifth embodiment of the power supply unit according to the invention.
• 6th shows a sixth embodiment of the power supply unit according to the invention in a schematic representation.
• 7th shows a schematic representation of a seventh embodiment of the power supply unit according to the invention.

The figures are described coherently and comprehensively, the same components are assigned the same reference numbers.

In the 1 schematically shown first embodiment of the power supply 2 for connecting an electrical charging station to an electrical device to be charged comprises a plug 4th with a housing 6th having an entrance 8th and an exit 10 having. This is at the entrance 8th a charging cable 12th arranged as an electrically conductive connection through which the plug 4th to connect or connect to the charging station temporarily and releasably again. At the exit 10 of the plug 4th there are two plug connectors 14th , 16 arranged, with a first plug connector 14th here as a DC + / DC- or DCplus / DCminus output for a direct current and a second plug connector 16 is designed for an alternating current. Also is at the exit 10 a second plug connector 16 for an alternating current at a level of one High voltage arranged over which the connector 4th alternatively, can be temporarily and releasably connected to the device again. The plug 4th can here via at least one, for example one of the two plug connectors 14th , 16 , temporarily and detachably connected to the device.

The case 6th of the plug 4th encloses charging electronics as components 18th and a surge protection module 20th . Here is the overvoltage protection module 20th with the entrance 8th of the plug 4th connected and / or, depending on the definition, the input 8th assigned. The charging electronics are against it 18th with the exit 10 connected and / or, depending on the definition, the output 10 assigned. It is also provided that the charging electronics 18th only via the overvoltage protection module 20th with the exit 10 is connected, the overvoltage protection module 20th between the charging electronics 18th and the exit 10 and thus also the charging cable 12th is arranged.

The connector also has 4th a handle 22nd on. On and / or in a wall of the housing 6th is a power semiconductor 24 arranged, here also between the overvoltage protection module 20th and the exit 10 is arranged. It is also on and / or in the wall of the housing 6th that lead to a loop 26th of the handle 22nd is oriented, a cooling module 28 arranged, which is designed to the power semiconductor 24 from the handle 22nd and / or its loop 26th thermally separate, so that fingers of a user holding the power supply 2 used, protected from excessive heat.

Inside the charging cable 12th Several lines run here, namely an L1 line, an L2 line and an L3 line as phase and / or external lines, an N line and a PE line or earth line and / or protective line. These called lines that are at the entrance 8th with the overvoltage protection module 20th are connected, are designed to the connector 4th provide an alternating voltage. The cables run through the surge protection module 20th and at least partially also by the charging electronics 18th , which is why they are also called cables for charging electronics 18th trained and / or to be designated. It is provided here that one over the charging cable 12th AC voltage provided by an AC-DC converter of the charging electronics 18th is converted into a DC voltage.

The overvoltage protection module 20th In one refinement, it comprises three times two pairs of varistors, each of which is connected in series along a primary safety line. Thus, the overvoltage protection module 20th a total of three primary safety lines, a first primary safety line with two varistors between a first phase line (L1 line) and the neutral line (N line) as lines of the charging electronics 18th is arranged. A second primary safety line with two varistors connected in series is between a second phase line (L2 line) and the neutral line as lines for the charging electronics 18th arranged. In addition, there is a third primary safety line with two varistors connected in series between a third phase line (L3 line) and the neutral line as lines for the charging electronics 18th arranged. A node is located between the two varistors of a respective primary safety line, one node of one of the three primary safety lines, which is symmetrically arranged between the varistors, being connected to the earth line (PE line) via a further secondary safety line. A gas discharge tube is arranged along each such secondary safety line.

Such a surge protection module 30th for a plug of the second embodiment of the power supply unit is in 2 shown schematically. Thereby run through this overvoltage protection module 30th an external line between an input of the plug and charging electronics within the plug 32 (P line), a neutral line 34 (N line) and a protective and / or earth line 36 (PEN line), which are also designed as lines for the charging electronics. Here, too, is between the outside line 32 and the neutral line 34 a primary security line 38 arranged that the outside line 32 and the neutral line 34 , which are arranged parallel to each other, connects. Along this primary safety line 38 are two varistors 40 arranged one behind the other in series.

Also includes the surge protection module 30th a secondary security line 42 who are the primary line of security 38 with the earth line 36 connects. This secondary safety line runs here 42 starting from a node between the two varistors 40 the primary line of security 38 and the earth line 36 . Along this secondary security line 42 is a gas discharge tube 44 arranged.

3 shows the overvoltage protection module in a schematic representation 50 for a plug of the third embodiment of the power supply in a schematic representation. This surge protection module 50 is arranged between an input of the plug and a charging electronics arranged inside the plug, which is also connected to an output of the plug. The overvoltage protection module 50 is crossed by several lines of the charging electronics, which also connect the input of the plug to the charging electronics. These lines are the first incoming external line 52a (L1), a second incoming outside line 52b (L2), a third incoming outside line 52c (L3), a first outgoing external line 54a (L1out), a second outgoing external line 54b (L2out), an incoming neutral line 56a (N), an outgoing neutral line 56b (Nout) and a protective line or earth line 58 (PE). These cables are used to transport a three-phase alternating current through the surge protection module 50 designed to the charging electronics.

The overvoltage protection module 50 comprises a total of four varistors 62a , 62b , 62c , 62d , with a first varistor 62a via a first primary security line 60a with the first incoming external line 52a connected is. A second varistor 62b is via a second primary safety line 60b with the second incoming external line 52b connected. A third varistor 62c is via a third primary security line 60c with the third incoming external line 52c connected. A fourth varistor 62d is via a fourth primary security line 64 with the incoming neutral line 56a connected. Also, this fourth is a varistor 62d on a continuation of the fourth primary security line 64 also with each of the three other varistors 62a , 62b , 62c and the first, second and third primary safety lines 60a , 60b , 60c with a respective incoming external line 52a , 52b , 52c connected. The fourth primary safety line is here 64 with the fourth varistor 62d a continuation of each of the first, second and third primary safety lines 60a , 60b , 60c . Depending on the definition, the surge protection module includes 50 three primary safety lines for the first three varistors mentioned 62a , 62b , 62c and the fourth primary security line 64 for the fourth varistor 62d that with that of the other three primary safety lines 60a , 60b , 60c each connected.

It also has the continuation of the fourth primary safety line 64 , to which all four varistors 62a , 62b , 62c , 62d are connected between two of these varistors 62a , 62b , 62c , 62d , here between the second and third varistor 62b , 62c , i.e. in the middle between all varistors 62a , 62b , 62c , 62d a node on which a secondary safety line 66 is connected, along which a gas discharge tube 68 is arranged. This secondary safety line connects 66 with the gas discharge tube 68 the primary safety lines 60a , 60b , 60c , 64 with the earth line 58 .

The charging electronics 80 and the surge protection module 82 , in the 4th are shown schematically, are arranged in a plug of the fourth embodiment of the power supply unit according to the invention. The plug comprises an input and an output, the plug being temporarily and detachably connectable to a charging station as an electrical energy source via the input and a charging cable. The output of the plug can be temporarily and releasably connected to a device, for example to an electrically powered vehicle, which is to be charged with electrical energy from the charging station during a charging process.

It is provided here that the charging electronics 80 facing the output of the connector and the overvoltage protection module 82 facing the input of the connector. Here is the overvoltage protection module 82 between the charging electronics 80 and the input of the plug arranged, wherein the charging electronics 80 exclusively via the overvoltage protection module 82 can be connected to the input of the plug and thus also to the charging station. The charging electronics 80 includes several electronic components, including a first AC / DC converter 84 , a second AC-to-DC converter 86 , a computing unit designed as a microcontroller (µC) 88 to control and thus to control and / or regulate the charging process and a shield 90 . When carrying out the charging process with the power supply unit, a three-phase alternating current is provided to the plug via the charging cable, starting from the charging station.

4th shows the charging electronics cables required for this 80 , whereby only one external line is representative for all three phases 92 (L1) is shown. In addition, there is a neutral line as additional lines 94 (N) and a protective line 96 (PE) shown, which can also be designed and / or referred to as a ground line. It is provided that the protective line 96 both the surge protection module 82 as well as the downstream charging electronics 80 completely crossed. The outside line is against it 92 and the neutral line 94 with the AC-DC converter 84 connected, which is designed to convert the three-phase alternating current into a direct current, so that the external line 92 and the neutral line 94 by two external lines 98a (DC + or DCplus), 98b (DC- or DCminus) can be continued.

In the overvoltage protection module 82 is between the outside line 92 and the neutral line 94 a primary security line 100 arranged that the outside line 92 and the neutral line 94 , which are arranged parallel to each other, connects. Along this primary safety line 100 are two varistors 102 arranged one behind the other in series. Also includes the surge protection module 82 a secondary security line 104 who are the primary line of security 100 with the protective line 96 connects. This secondary safety line runs here 104 starting from a node between the two varistors 102 the primary line of security 100 and the protective line 96 . Along this secondary security line 104 is a gas discharge tube 105 arranged.

In the 5 schematically shown fifth embodiment of the power supply 110 for connecting an electrical charging station to an electrical device to be charged comprises a plug 112 with a housing 114 having an entrance 116 and an exit 118 having. This is at the entrance 116 a charging cable 120 arranged over which the connector 112 to be connected temporarily and releasably to the charging station. At the exit 118 of the plug 112 there are two plug connectors 122 , 124 arranged with the connector 112 here via at least one plug connector 122 , 124 can be temporarily and detachably connected to the device. The case 114 of the plug 112 encloses charging electronics as components 126 and a surge protection module 128 . Here is the overvoltage protection module 128 with the exit 118 of the plug 112 connected and / or the output 118 assigned. The charging electronics are against it 126 with the exit 118 connected and / or the output 118 assigned. It is also provided that the charging electronics 126 only via the overvoltage protection module 128 with the exit 116 is connected, the overvoltage protection module 128 between the charging electronics 126 and the exit 116 and thus also between the charging electronics 126 and the charging cable 120 is arranged. The overvoltage protection module 128 is for example like one of the overvoltage protection modules 30th , 50 , 82 from one of the 2 , 3 or 4th educated.

The connector also has 112 a handle 130 on. In and / or on a wall of the housing 114 is a cooler 132 arranged. Under control 114 is a fan 134 arranged, which is designed to convection air into one of the handle 114 enclosed loop 138 encourage and finger of a user who is using the power supply 2 used to protect against excessive heat.

The sixth embodiment of the power supply unit according to the invention 140 is in 6th shown schematically. In addition, is the seventh embodiment of the power supply unit according to the invention 142 in 7th shown schematically. It is provided here that both power supplies 140 , 142 a variant of the 1 presented embodiment of the connector 4th exhibit. This plug 4th includes an exit 8th , on which two plug connectors 14th , 16 are arranged and a housing 6th , in which a charging electronics 18th and a surge protection module 20th are arranged. Here is the overvoltage protection module 20th again between the charging electronics 18th and an exit 8th of the plug 4th arranged. In the case of the sixth embodiment of the power supply 140 is at the exit 8th of the plug 4th via a charging cable 144 another plug connector 146 arranged, this charging cable 144 and the other connector 146 for the transport of a direct voltage and / or low voltage from a charging station as an electrical energy source to the entrance 8th of the plug 4th are trained. In contrast, in the case of the seventh embodiment of the power supply unit 142 at the exit 8th of the plug 4th a charging cable 148 and also a plug connector 150 arranged for the transport of a three-phase AC voltage and / or high voltage from the charging station to the plug 4th are trained.

List of reference symbols

2

power adapter

4th

plug

6th

casing

8th

entrance

10

output

12th

Charging cable

14, 16

Plug connector

18th

Charging electronics

20th

Surge protection module

22nd

Handle

24

Power semiconductors

26th

loop

28

Cooling module

30th

Surge protection module

32

Outside line

34

Neutral line

36

Earth line

38

primary security line

40

Varistor

42

secondary security line

44

Gas discharge tube

50

Surge protection module

52a, 52b, 52c, 54a, 54b, 54c

Outside line

56a, 56b

Neutral line

58

Earth line

60a, 60b, 60c

primary security line

62a, 62b, 62c, 62d

Varistor

64

primary security line

66

secondary security line

68

Gas discharge tube

80

Charging electronics

82

Surge protection module

84, 86

Converter

88

Arithmetic unit

90

shielding

92

Outside line

94

Neutral line

96

Protective line

98a, 98b

Outside line

100

primary security line

102

Varistor

104

secondary security line

105

Gas discharge tube

110

power adapter

112

plug

114

casing

116

entrance

118

output

120

Charging cable

122, 124

Plug connector

126

Charging electronics

128

Surge protection module

130

Handle

132

cooler

134

Fan

138

loop

140, 142

power adapter

144

Charging cable

146

Plug connector

148

Charging cable

150

Plug connector

QUOTES INCLUDED IN THE DESCRIPTION

This list of the documents listed by the applicant was generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Patent literature cited

• DE 102013220197 A1 [0003]
• DE 102017212435 A1 [0004]
• DE 102013201570 A1 [0005]

Claims (8)

Power supply unit for connecting a charging station to a device, the charging station being designed to provide the device with electrical energy, the power supply unit (2, 110, 140, 142) having a plug (4, 112) with an input (6) and an output (8), the input (6) being connectable to the charging station via a connection, the plug (4, 112) being connectable to the device via the output (8), with one in the plug (4, 112) Charging electronics (18, 80, 126), which have several lines, and an overvoltage protection module (20, 30, 50, 82, 128) are arranged, the overvoltage protection module (20, 30, 50, 82, 128) between the charging electronics (18 , 80, 126) and the input (6) of the plug (4, 112) and has at least one safety line (38, 42, 60a, 60b, 60c, 64, 66, 100, 104), the lines of the charging electronics ( 18, 80, 126) connects. Power supply after Claim 1 , in which the overvoltage protection module (20, 30, 50, 82, 128) has at least two varistors (40, 62a, 62b, 62c, 62d, 102) which run along at least one primary safety line (38, 60a, 60b, 60c, 64 , 100) of the overvoltage protection module (20, 30, 50, 82, 128) are arranged. Power supply after Claim 1 or 2 , in which the overvoltage protection module (20, 30, 50, 82, 128) has at least one gas discharge tube (44, 68, 104) which extends along at least one secondary safety line (42, 66, 104) of the overvoltage protection module (20, 30, 50, 82, 128) is arranged. Power supply unit according to one of the preceding claims, in which at least one plug connector (14, 16, 122, 124) is arranged at the output (8) of the plug (4, 112). Power supply unit according to one of the preceding claims, in which a plug connector (146, 150) is arranged at one end of the connection which is assigned to the charging station and faces away from the plug (4, 112). Power pack according to one of the preceding claims, in which the charging electronics (18, 80, 126) are designed as power electronics. Power supply unit according to one of the preceding claims, in which the connection is inductive. Power pack according to one of the preceding claims, which is designed for charging a device designed as a vehicle.

Images