Charging equipment with water tank and system

Abstract

The invention relates to a charging device for at least one electrically drivable vehicle having at least one power battery, having at least one charging plug designed to supply power to the power battery of the vehicle and having at least one electrical component, having at least one water-containing water tank, the charging device is configured to directly or indirectly discharge waste heat generated due to the power loss of the at least one electrical component to the water introduced into the water tank. The invention further discloses a charging system.

Description

Technical Field

[0001] The invention relates to a charging device for at least one electrically drivable vehicle having at least one power battery, the charging device having at least one charging plug designed to supply power to the power battery of the vehicle. The invention also relates to a charging system. Background Art

[0002] In addition to charging posts or so-called charging boxes / wall boxes, it is also known to use charging stations or charging centers for charging electrically driven vehicles. This type of infrastructure for charging traction batteries is mainly used for charging and usually has no other functions.

[0003] Depending on the design of the charging station, the charging station may be covered by a roof structure to protect the charging pile or charging box and the parked vehicle from direct impact of the weather.

[0004] CN113442762 A describes a charging pile having a pile top plate for collecting rainwater and an electric plug for charging a power battery on the vehicle side. The rainwater is filtered and can be discharged through a tap when needed.

[0005] From CN218400249 U, a charging station for charging a power battery on the vehicle side is known, which has a cooling system based on water evaporation. Here, rainwater can be collected with the help of a trough-shaped top and evaporated in a heat exchanger. The water evaporates in a closed circuit and is recondensed by a blower so that the condensed water is reintroduced into the water tank. This type of system requires a large number of components and a complex water supply control in order to be able to achieve effective cooling of the generated power losses. Summary of the invention

[0006] It is therefore an object of the present invention to provide a charging device and a charging system which allow effective and technically simple cooling of components.

[0007] This object is achieved according to the invention by a charging device having the features of claim 1 and a charging system having the features of claim 7. Advantageous embodiments and developments are described in the dependent claims.

[0008] The charging device according to the present invention is used to charge a power battery of an electrically driven vehicle, such as a BEV (pure electric vehicle) or an HEV (hybrid electric vehicle). The charging device can be designed as a fixed unit or a mobile unit.

[0009] For example, the parking position of a mobile charging device can be changed and its operation does not have to rely on electrical connections. For this purpose, the electrochemical energy storage device in the charging device can be charged in advance so that the vehicle's power battery can be charged later.

[0010] A charging device of stationary design can be installed in a stationary manner and connected to electrical connections on the infrastructure side in order to ensure a charging operation.

[0011] The charging device according to the present invention has at least one charging plug designed to supply power to the power battery of the vehicle. To this end, the charging plug can cooperate with the charging socket on the vehicle side to achieve energy transfer. In addition, the charging device has at least one electrical component and at least one water tank that is filled with water or can be filled with water.

[0012] According to the invention, the charging device is designed to discharge waste heat generated during the charging process due to the power loss of at least one electrical component directly or indirectly to the water introduced into the water tank.

[0013] According to another aspect of the invention, a charging system is provided. The charging system has at least one charging device according to the invention and at least one parking area for at least one vehicle arranged next to the charging device. Thus, the vehicle can be parked near the charging system during the charging process.

[0014] By rejecting the waste heat to the water in the tank, customers have warm water available all year round to, for example, fill the vehicle's windshield wiper water tank or the water tank for cleaning the vehicle's sensors.

[0015] Furthermore, the conventional functions of the charging device can be expanded by, for example, storing waste heat in water and collecting water for secondary purposes in order to increase the efficiency of the charging system. For example, rainwater can be collected from a roof structure or a parking area, filtered through at least one filter and then introduced into a water tank.

[0016] In one embodiment, at least one wall of the water tank is covered on the outside by at least one wall of the charging device. Alternatively or additionally, the at least one water tank forms at least one outer wall of the charging device. This measure makes it possible to integrate the at least one water tank into the charging device in a particularly advantageous manner.

[0017] According to another embodiment, at least one water tank is directly thermally coupled to at least one electrical component by direct contact or by means of a cooling circuit, in particular by means of pipes and / or heat exchange elements integrated into the water tank. As a result, components with particularly high power losses can be arranged directly on the water tank in order to use the water tank as a cooling body. Alternatively, one or more components can be thermally coupled to the water tank via one or more cooling circuits. In this case, one or more heat exchange elements can be arranged in or on the water tank, for example in the form of pipes or finned tubes, in order to enable a particularly optimal heat transfer.

[0018] According to another embodiment, at least one water tank is indirectly thermally coupled to at least one electrical component via thermal radiation and / or thermal convection within the charging device. Thus, the electrical components of the charging device can be enclosed by the outer wall and the interior of the charging device is heated due to the power loss of the electrical components. The water tank and the water in the water tank can then be heated via the heated interior. Due to the high specific heat capacity of water, a technically simple heat source can be provided by the at least one water tank.

[0019] Depending on the design, the indirect heat transfer to the water tank can be optimized if the interior is not filled with air but with a gas or a gas mixture with better thermal conductivity, such as helium.

[0020] According to another embodiment, the charging device has at least one water extraction point for manually and / or automatically removing water heated by waste heat from the water tank. By this measure, the user of the charging device can use the water contained in the water tank and pre-heated by waste heat.

[0021] Transferring waste heat to water prevents the water from freezing in low outdoor temperatures, and in addition to being used to fill the vehicle's water storage tank, it can also be used to cost-effectively de-ice wiper nozzles, windshields, etc.

[0022] For this purpose, a water hose can be connected to the water intake point. Alternatively, the water intake point can be provided with a fixedly connected water hose.

[0023] According to another embodiment, at least one electrical component is designed as an electrical interface of an electrochemical energy storage device, a charging electronic device, a converter, a transformer and / or a charging plug integrated into the charging device. In this case, the charging device with an electrochemical energy storage device can advantageously be designed as a mobile charging device, which can output its energy to the power battery of the vehicle at an application location without an electrical infrastructure after the initial charging of the electrochemical energy storage device. At the same time, all electrical devices and components in the charging device can be used to heat the water in the water tank. In particular, the water is used as a technically simple radiator. The pre-temperatured water obtained in this way can provide customers of the charging device with a particularly convenient service option, especially when the outdoor temperature is low.

[0024] According to one embodiment of the charging system, the charging system has at least one roof structure, which at least partially covers at least one charging device and / or at least one parking area. Preferably, the roof structure is designed to collect rainwater and guide it into at least one water tank of the at least one charging device. To this end, the roof structure can have at least one slope or gradient leading to a drain pipe and / or an outflow channel. The rainwater can then be introduced directly into the at least one water tank via a hose system or a pipe system. Depending on the design, one or more filters can be arranged between the water tank and the roof structure to purify the rainwater.

[0025] According to another embodiment of the charging system, the roof structure is located on at least one charging device and / or is at least partially supported by support elements. As a result, at least one charging device can be used at least partially as a structural element for holding or supporting the roof structure. As a result, the number of support columns or support elements for positioning the roof structure can be minimized. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The present invention is schematically shown according to the embodiments in the accompanying drawings and is further described with reference to the accompanying drawings. In which:

[0027] Figure 1 A charging system according to a first embodiment of the present invention is shown;

[0028] Figure 2 A charging system according to a second embodiment of the present invention is shown.

[0029] List of reference numerals:

[0030] 100 Charging System

[0031] 110 Parking area

[0032] 120 Roof structure

[0033] 130 Support element

[0034] 200 vehicles

[0035] 10 Charging equipment

[0036] 11Electrical components / electrochemical accumulators

[0037] 12Electrical components / charge regulator

[0038] 13 Water Tank

[0039] 14 Water tank designed as outer wall

[0040] 15 outer wall

[0041] 20 Dispersed water intake locations

[0042] 21 Central water intake

[0043] 30 Charging plug

[0044] V Internal Space

[0045] W Water DETAILED DESCRIPTION

[0046] Figure 1A charging system 100 according to a first exemplary embodiment of the present invention is shown. The charging system 100 has two charging devices 10 as an example. Parking areas 110 for vehicles 200 are provided next to the charging devices 10. Parking areas 110 are provided on both sides of each charging device 10. In order to illustrate the charging process, a vehicle 200 is parked in a parking area 110.

[0047] In the illustrated embodiment, the charging system 100 has a roof structure 120 that completely covers the charging device 10 and the parking area 110 .

[0048] The roof structure 120 is located partially on the charging device 10 and partially on the support element 130 or the support column.

[0049] The charging device 10 is used to charge a power battery (not shown) of an electrically drivable vehicle 200, such as a BEV (pure electric vehicle) or an HEV (hybrid electric vehicle). The charging device 10 is designed as a stationary unit by way of example. To compensate for load peaks, the charging device 10 has an integrated electrochemical energy storage device 11. The charging device 10 can use the energy stored in the electrochemical energy storage device 11 and / or the energy of a stationary electrical connection (not shown) to charge the power battery.

[0050] The charging device 10 has charging plugs 30 on both sides, which are designed to be coupled to corresponding charging sockets of the vehicle 200 in order to supply power to the power battery of the vehicle 200 .

[0051] In addition to the electrochemical energy storage device 11 , the charging device 10 has at least one further electrical component 12 . This electrical component can be designed in the form of a converter, a transformer, a charge regulator, etc. The electrochemical energy storage device 11 can also be regarded as an electrical component.

[0052] During operation of the charging device 10 , in particular during charging operation, the electric components 11 , 12 generate waste heat due to power losses and internal resistances. This waste heat is used to heat the at least one water tank 13 and / or the water W stored in the water tank 13 .

[0053] The waste heat generated by the power loss of at least one electrical component 11 , 12 can be transferred directly or indirectly to the water W introduced into the water tank 13 . Figure 1 Indirect heat transfer by heat convection or heat radiation is schematically shown. To this end, all electrical components 11 , 12 and the water tank 13 are enclosed in a common interior space V of the charging device 10 by means of an outer wall 15 of the charging device 10 .

[0054] In the exemplary embodiment shown, the water tank 13 is arranged between the electrochemical energy storage device 11 and the charge regulator 12. These electrical components 11, 12 can also be in direct physical contact with the water tank 13, so that direct heat transfer by means of heat conduction is possible.

[0055] Figure 2 FIG. 1 shows a charging system 100 according to a second embodiment of the present invention. Figure 1 Unlike the charging system 100 shown, the charging device 10 here has a plurality of water tanks 14, which are designed as outer walls of the respective charging device 10. The water tanks 14 are here positioned in the interior V of the charging device 10 between the corner pillars.

[0056] In the exemplary embodiment shown, water W from water tanks 13 , 14 can be removed via decentralized water intake points or water intake points arranged at the respective charging device 10 or via a central water intake point 21 in order to fill a water tank of the vehicle, for example.

[0057] Advantageously, the roof structure 120 can be used to collect rainwater. The collected rainwater can then be introduced into the water tanks 13, 14 of the charging device 10 via pipes or hoses not shown. According to the design, a liquid level sensor (not shown) can be used to prevent the water tanks 13, 14 from overflowing.

[0058] In an optional and technically simple solution, when the water tanks 13, 14 overflow, excess rainwater can be drained via an optional drain. Depending on the location of the charging system 100, the rainwater can be purified by at least one filter, filter and / or separator before being introduced into the water tanks 13, 14.

Claims

1. A charging device (10) for at least one electrically drivable vehicle (200) having at least one power battery, the charging device having at least one charging plug (30) designed to supply power to the power battery of the vehicle (200) and having at least one electrical component (11, 12), wherein: The charging device (10) has at least one water tank (13, 14) containing water (W), characterized in that the charging device (10) is configured to discharge waste heat generated by power loss of at least one electrical component (11, 12) directly or indirectly to the water (W) introduced into the water tank (13, 14).

2. The charging device according to claim 1, characterized in that: At least one wall of the water tank (13) is covered on the outside by at least one wall (15) of the charging device (10), and / or at least one water tank (14) forms at least one outer wall of the charging device (10).

3. The charging device according to claim 1 or 2, characterized in that: At least one water tank (13, 14) is directly thermally coupled to at least one electrical component (11, 12) by direct contact or by means of a cooling circuit, in particular by pipes and / or heat exchange elements integrated into the water tank (13, 14).

4. The charging device according to any one of claims 1 to 3, characterized in that: At least one water tank (13, 14) is indirectly thermally coupled to at least one electric component (11, 12) via heat radiation and / or heat convection within the charging device (10).

5. The charging device according to any one of claims 1 to 4, characterized in that: The charging device (10) has at least one water extraction point (20, 21) for manually and / or automatically removing water (W) heated by waste heat from a water tank (13, 14).

6. The charging device according to any one of claims 1 to 5, characterized in that: At least one electrical component is designed as an electrical interface of an electrochemical energy storage device (12), charging electronics, a converter, a transformer and / or a charging plug (30) integrated into the charging device (12).

7. A charging system (100) having at least one charging device (10) according to any of the preceding claims and having at least one parking area (110) for at least one vehicle (200) arranged next to the charging device (10).

8. The charging system according to claim 7, characterized in that: The charging system (100) comprises at least one roof structure (120) which at least partially covers at least one charging device (10) and / or at least one parking area (110), wherein the roof structure (120) is designed to collect rainwater and to direct the rainwater into at least one water tank (13, 14) of at least one charging device (10).

9. The charging system according to claim 7 or 8, characterized in that: The roof structure (120) is located on at least one charging device (10) and / or is at least partially supported by a supporting element (130).

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