Charging station for charging a mining / engineering vehicle battery

Abstract

The present disclosure relates to a charging station (100) for charging a mining / works vehicle battery. The charging station (100) comprises at least one converter (110) configured to be connected to a first voltage network (N1) or a second voltage network (N2) and to convert a voltage of the first voltage network (N1) into a first charging voltage (V1) or to convert a voltage of the second voltage network (N2) into a second charging voltage (V2). The charging station (100) further comprises at least one battery charger (120) connected to the converter (110) and configured to charge at least one battery (130) at the first charging voltage (V1) or the second charging voltage (V2) based on a measurement of the first voltage network (N1) and / or a measurement of the battery (130). Furthermore, the present disclosure also relates to a corresponding method for charging a mining / works vehicle battery.

Description

Technical Field

[0001] This disclosure relates to charging stations for charging batteries of mining vehicles / engineering vehicles. Furthermore, this disclosure also relates to charging systems and corresponding methods. Background Technology

[0002] Electrified mining / engineering vehicles offer opportunities to reduce the environmental footprint in mining / engineering environments and create healthier working conditions. These vehicles are driven by one or more electric motors, which in turn can be powered by an electrical grid system and / or an onboard energy storage system (ESS) including, for example, one or more batteries or battery packs. Compared to diesel vehicles, electrified mining / engineering vehicles emit no emissions and therefore can offer significant savings, particularly in ventilation and cooling within mining / engineering environments.

[0003] As electrified mining / construction vehicles travel around mining / construction sites to perform one or more tasks, the onboard ESS (Electric Power Supply System) charging level decreases, and electrified mining / construction requires recharging at regular intervals. Charging can be done at charging stations, and mining / construction sites typically include many charging stations in different locations for this purpose. Summary of the Invention

[0004] The purpose of this disclosure is to provide a solution that mitigates or overcomes the drawbacks of conventional solutions.

[0005] Another objective of embodiments of this disclosure is to provide a charging station that provides efficient charging for the batteries of mining vehicles / engineering vehicles.

[0006] The above and further objectives are addressed by the subject matter of the appended independent claims.

[0007] According to a first aspect of this disclosure, the above-mentioned and other objectives are achieved by a charging station for charging the batteries of mining vehicles / engineering vehicles, the charging station comprising:

[0008] At least one converter is configured to be connected to a first voltage network or a second voltage network, and to convert the voltage of the first voltage network into a first charging voltage or to convert the voltage of the second voltage network into a second charging voltage; and

[0009] At least one battery charger is connected to the converter and configured to charge at least one battery at a first charging voltage or a second charging voltage based on measurements of a first voltage network and / or battery measurements.

[0010] The advantage of the control arrangement according to the first aspect is that, by taking into account the measurement of the first voltage network and the battery, it is possible to maintain the quality of charging power and grid strength. Furthermore, it can also reduce the impact of charging current on grid voltage. Thus, it provides improved charging compared to conventional solutions.

[0011] In an embodiment of the charging station according to the first aspect, the charging station is configured as follows:

[0012] The battery is further charged using a first charging voltage or a second charging voltage based on measurements from a second voltage network.

[0013] The advantage of this implementation is that it takes into account another relevant parameter for determining whether the battery is charged with a first charging voltage or a second charging voltage, thus improving the charging process.

[0014] In an embodiment of the charging station according to the first aspect, the charging station is configured as follows:

[0015] The battery is further charged with a first charging voltage or a second charging voltage based on at least one voltage threshold or charging current threshold.

[0016] The advantage of this implementation is that the threshold is used to determine whether the battery is charged with a first charging voltage or a second charging voltage, thus improving the charging process.

[0017] In an embodiment of the charging station according to the first aspect, at least one voltage threshold includes zero voltage.

[0018] The advantage of this implementation is that it allows detection of the presence of voltage in either the first or second voltage network. Therefore, the battery can be guaranteed to be charged. Accordingly, a charging current threshold is used to check for current flow in the voltage network.

[0019] In the embodiment of the charging station according to the first aspect, the battery measurement is a state of charge measurement.

[0020] In an embodiment of the charging station according to the first aspect, the charging station is configured as follows:

[0021] Further, based on any one of the changes in grid electricity price, grid service requirements, and renewable energy generation of the first voltage network and / or the second voltage network, the battery is charged with a first charging voltage or a second charging voltage.

[0022] The advantage of this implementation is that it takes into account further relevant parameters to determine whether the battery is charged with a first charging voltage or a second charging voltage, for improved charging and grid operation.

[0023] In an embodiment of the charging station according to the first aspect, the charging station includes:

[0024] At least two converters, wherein a first converter is configured to connect to a first voltage network and provide a first charging voltage, and a second converter is configured to connect to a second voltage network and provide a second charging voltage.

[0025] The advantage of this implementation method is that the circuit topology of the charging station can be adapted to different charging requirements and / or voltage network configurations.

[0026] In an embodiment of the charging station according to the first aspect, a first converter is configured to connect between a first voltage network and a battery charger, and a second converter is configured to connect between a second voltage network and a battery charger.

[0027] In an embodiment of the charging station according to the first aspect, the charging station includes:

[0028] At least two battery chargers, wherein a first battery charger is configured to be connected to a first converter and charge the battery with a first charging voltage, and a second battery charger is configured to be connected to a second converter and charge the battery with a second charging voltage.

[0029] The advantage of this implementation method is that the circuit topology of the charging station can be adapted to different charging requirements and / or voltage network configurations.

[0030] In an embodiment of the charging station according to the first aspect, a first battery charger is configured to charge a first battery temporarily stored at the charging station, and a second battery charger is configured to charge a second battery disposed in a mining vehicle / engineering vehicle.

[0031] The advantage of this implementation is the possibility of charging both the batteries stored at the charging station and the batteries arranged in the mining / engineering vehicles.

[0032] In an embodiment of the charging station according to the first aspect, the first voltage network and the second voltage network are connected to the same power source or different power sources.

[0033] The advantage of this implementation is that it provides grid flexibility. With the same power source, charging can be done with a lower grid capacity. With different power sources, the charger connects to the desired voltage network during periods of capacity limitation.

[0034] In an embodiment of the charging station according to the first aspect, the first voltage network and the second voltage network are either AC networks or DC networks.

[0035] According to a second aspect of this disclosure, the above-mentioned and other objectives are achieved by a charging system comprising at least one charging station according to any one of the preceding claims, a first voltage network, a second voltage network, and at least one battery.

[0036] In an embodiment of the charging system according to the second aspect, the battery is a vehicle battery for mining vehicles / engineering vehicles.

[0037] According to a third aspect of this disclosure, the above-mentioned and other objectives are achieved by a method for charging the battery of a mining vehicle / engineering vehicle, the method comprising:

[0038] Converting the voltage of the first voltage network into a first charging voltage, or converting the voltage of the second voltage network into a second charging voltage; and

[0039] At least one battery is charged using a first charging voltage or a second charging voltage, based on measurements of a first voltage network and / or the battery itself.

[0040] The method can be adapted from the implementation method of the control arrangement mentioned above. The advantages of the method are the same as those of the corresponding implementation method of the control arrangement.

[0041] According to aspects of this disclosure, the above-mentioned and other objectives are achieved by one or more control units arranged to control the control arrangement and / or the first electrified mining / engineering vehicle to perform the method according to any embodiment of the method aspect.

[0042] According to a further aspect of this disclosure, the methods described herein are implemented by the use of a computer program product comprising instructions that, when executed by a computer such as, for example, the control unit mentioned herein, cause the computer to perform the steps of the methods according to any of the embodiments described herein.

[0043] Further applications and advantages of the embodiments disclosed herein will become apparent from the following detailed description. Attached Figure Description

[0044] The accompanying drawings are intended to illustrate and explain different embodiments of this disclosure, wherein:

[0045] Figures 1a to 1b A charging station according to an embodiment of the present disclosure is shown;

[0046] Figure 2 A charging station with a controller is shown according to an embodiment of the present disclosure;

[0047] Figures 3a to 3b A charging station and a power supply according to an embodiment of the present disclosure are shown;

[0048] Figure 4 A charging station having a battery charger and two converters according to an embodiment of the present disclosure is shown;

[0049] Figure 5 A charging station having two battery chargers and two converters according to an embodiment of the present disclosure is shown;

[0050] Figure 6 A charging station for charging two batteries according to an embodiment of the present disclosure is shown.

[0051] Figure 7 A charging system according to an embodiment of the present disclosure is shown;

[0052] Figure 8 Non-limiting examples of mining vehicles / engineering vehicles according to embodiments of the present disclosure are shown; and

[0053] Figure 9 A flowchart illustrating a method according to an embodiment of the present disclosure is shown. Detailed Implementation

[0054] According to embodiments of this disclosure, a charging station 100 for charging the batteries of mining vehicles / engineering vehicles is provided. (Figures 1 to 100) Figure 6 A charging station 100 according to an embodiment of the present disclosure is shown. The charging station 100 is capable of charging batteries for mining vehicles / construction vehicles. The batteries may be vehicle batteries comprising one or more individual battery cells, battery units, and / or battery packs, and may be disposed within and / or separated from the mining vehicle / construction vehicle during charging, for example, temporarily stored at the charging station 100. The charging station 100 is capable of connecting to two voltage networks, thereby enabling improved and more reliable charging of the mining vehicle / construction vehicle batteries.

[0055] refer to Figures 1a to 1b The charging station 100 includes at least one converter 110 configured to connect to a first voltage network N1 or a second voltage network N2. The converter 110 can therefore switch between connecting to the first voltage network N1 or the second voltage network N2. The first voltage network N1 and the second voltage network N2 can be alternating current (AC) networks or direct current (DC) networks, and can be connected to the same power source S or different power sources S1, S2, as referenced below. Figures 3a to 3b To be described further.

[0056] Converter 110 is configured to convert the voltage of the first voltage network N1 into a first charging voltage. Alternatively, the voltage of the second voltage network N2 can be converted into a second charging voltage. . refer to Figure 1aWhen converter 110 is connected to the first voltage network N1, as indicated by the solid line, converter 110 converts the voltage of the first voltage network N1 into a first charging voltage. However, when converter 110 is connected to the second voltage network N2, converter 110 converts the voltage of the second voltage network N2 into a second charging voltage. ,like Figure 1b As shown in the diagram. The charging voltage provided by the charging station 100. , Therefore, it may depend on which voltage network N1, N2 the converter 110 is connected to. The converter 110 may include power electronic devices configured to perform conversion, and depending on the current type of the voltage network, it may be an AC / DC converter or a DC / DC converter. Any suitable AC / DC converter and DC / DC converter may be used in conjunction with this charging station 100.

[0057] The first charging voltage provided by converter 100 Second charging voltage The charging voltage levels can be the same or different. For example, regardless of whether converter 110 is connected to a first voltage network N1 or a second voltage network N2, converter 110 can provide the same charging voltage. Alternatively, converter 110 can provide a first charging voltage level when connected to the first voltage network N1 and a second charging voltage level different from the first charging voltage when connected to the second voltage network N2. Therefore, in the embodiment... or .

[0058] The charging station 100 further includes at least one battery charger 120 connected to the converter 110 and configured to charge at a first charging voltage based on measurements of the first voltage network N1 and the battery 130. Or the second charging voltage At least one battery 130 is charged. The measurement of the first voltage network N1 can be a measurement indicating the available voltage / current, i.e., the first voltage network N1 is capable of providing the voltage / current for charging. The measurement of the first voltage network N1 can also reflect the characteristics of the available voltage / current. Alternatively, the measurement of battery 130 can be a state-of-charge measurement, i.e., a measurement indicating the current state of charge of battery 130. However, other battery measurements such as charging rate and charging current can also be used.

[0059] Based on measurements of the first voltage network N1 and the battery 130, the charging station 100 can determine whether the first voltage network N1 has sufficient capacity to charge the battery 130. For example, a low state of charge measurement implies the need for a stronger voltage network to charge the battery 130. If the first voltage network N1 cannot provide the required charging voltage / current, the charging station 100 can determine to switch to the second voltage network N2, causing the converter 110 to provide a second charging voltage. .

[0060] Therefore, in implementations, the input connection of converter 110 can be configured to switch from a first voltage network N1 to a second voltage network N2, or from a second voltage network N2 to a first voltage network N1, based on the parameters disclosed herein. Further examples relate to situations where the input connection of converter 110 is connected to the first voltage network N1 and remains connected to the first voltage network N1 based on the parameters disclosed herein, or when the input connection of converter 110 is connected to the second voltage network N2 and remains connected to the second voltage network N2 based on the parameters disclosed herein.

[0061] refer to Figure 2 The charging station 100 may include controls for controlling the converter 110 and the battery charger 120 to charge at a first charging voltage. Or the second charging voltage A controller 140 charges the battery 130. The controller 140 can be configured to obtain measurements of a first voltage network N1 and the battery 130. Measurements of the first voltage network N1 can be provided to the controller 140 from the first voltage network N1, and measurements of the battery 130 can be provided to the controller 140 from the battery 300, as... Figure 2 The values ​​are indicated by dashed lines. However, in embodiments, measurements of the first voltage network N1 and / or battery 130 can be provided in other ways, such as from a central controller and / or control node (not shown) distributed throughout the system. Based on the measurements of the first voltage network N1 and battery 130, controller 140 can connect converter 110 to the first voltage network N1 to charge at a first charging voltage. Charge battery 130, or connect converter 110 to second voltage network N2 to charge at a second charging voltage. Battery 130 is charged. Controller 140 may, for example, control one or more switches (not shown) of the charging station to connect converter 110 to a first voltage network N1 or a second voltage network N2. In embodiments, any suitable communication protocol and interface may be used when communication is performed between controller 140 and other parts / devices / components of the charging station and a remote entity. Communication may be performed using wired and / or wireless communication and based on a standardized communication system.

[0062] In this implementation, when determining which network to use to charge the battery 130, the charging station 100 may consider measurements from both the first voltage network N1 and the second voltage network N2. Therefore, the charging station 100 may further determine the first charging voltage based on the measurement of the second voltage network N2. Or the second charging voltage The battery 130 is charged. In this way, the charging station 100 can ensure that the most suitable voltage network is selected, and the converter 100 does not switch to a voltage network that cannot provide the required charging voltage / current.

[0063] In an implementation, the charging station 100 may further use a first charging voltage based on at least one voltage threshold or current threshold. Or the second charging voltage The battery 130 is charged. The charging station 100 may, for example, compare a voltage measurement of the first voltage network N1 and / or a voltage measurement of the second voltage network N2 with a voltage threshold. If the voltage of the first voltage network N1 is lower than the voltage threshold and / or the voltage of the second voltage network N2 is equal to or higher than the voltage threshold, the charging station 100 may determine to switch from the first voltage network N1 to the second voltage network N2. Similarly, a current threshold may be compared with a current measurement of the first voltage network N1 and / or the second voltage network N2.

[0064] In this implementation, at least one voltage threshold includes or is equal to zero voltage. Therefore, it can be determined whether the first voltage network N1 and / or the second voltage network N2 are energized. If the measurement of the first voltage network N1 indicates zero voltage, i.e., the first voltage network N1 is not energized and therefore cannot provide any charging voltage / current, then the charging station 100 can, for example, determine that it is connected to the second voltage network N2 and charged at a second charging voltage. Charging. Of course, the voltage / current thresholds can be set to other values ​​to suit different applications with varying charging requirements. The voltage / current thresholds can also depend on the voltage network configuration.

[0065] In an implementation, the charging station 100 may further use a first charging voltage based on any one of the following parameters. Or the second charging voltage Charging battery 130 involves consideration of grid electricity prices, grid service requirements, and renewable energy generation for the first voltage network N1 and / or the second voltage network N2. In other words, charging station 100 can switch from the first voltage network N1 to the second voltage network N2, or vice versa, based on characteristics of the first voltage network N1 and / or the second voltage network N2 related to grid electricity prices, grid service requirements, and / or renewable energy generation. Grid electricity prices can indicate the cost of electricity from the voltage network, and charging station 100 can choose to use the voltage network that provides the lowest charging cost. Grid service can be related to, for example, frequency support, reactive power, etc., and charging station 100 can choose a voltage network that supports specific grid services for charging. Renewable energy generation can affect the stability, environmental impact, and / or cost of the first voltage network N1 and / or the second voltage network N2. Depending on the renewable energy generation, charging station 100 can, for example, select the voltage network with the smallest or largest proportion of renewable energy generation.

[0066] refer to Figures 3a to 3b The first voltage network N1 and the second voltage network N2 can be connected to the same power supply S or different power supplies S1 and S2. Figure 3a In this configuration, the first voltage network N1 and the second voltage network N2 are connected to the same power supply S1. The first voltage network N1 and the second voltage network N2 can be connected to the same power supply S via electrical wiring and / or via separate lines. Figure 3b In this configuration, a first voltage network N1 and a second voltage network N2 are connected to different power sources S1 and S2. The first voltage network N1 is therefore connected to the first power source S1, and the second voltage network N2 is connected to a second power source S2, which is different from the first power source S1. The power sources S, S1, and S2 can be AC ​​power sources, DC power sources, and / or renewable power sources such as wind or solar energy.

[0067] In one embodiment, the charging station 100 may include at least two converters 110, 110' and / or at least two battery chargers 120, 120'. Thus, the respective converters 110, 110' can be connected to corresponding voltage networks N1, N2. Furthermore, the separate converters 110, 110' and / or battery chargers 120, 120' can be used for a first charging voltage. Second charging voltage .

[0068] Figure 4 A charging station 100 according to an embodiment is shown, wherein the charging station 100 includes two converters 110, 110' and a battery charger 120. The first converter 110 is configured to connect to a first voltage network N1 and provide a first charging voltage. The second converter 110' is configured to connect to the second voltage network N2 and provide a second charging voltage. . refer to Figure 4 The first converter 110 can be configured to connect between the first voltage network N1 and the battery charger 120, and the second converter 110' can be configured to connect between the second voltage network N2 and the battery charger 120. In the illustrated embodiment, it is assumed that the first converter 110 is connected to the first voltage network N1 and provides a first charging voltage to the battery charger 120. As indicated by the solid line. Battery 130 therefore uses the first charging voltage. Charge.

[0069] Figure 5 A charging station 100 according to an embodiment is shown, wherein the charging station 100 includes two converters 110, 110' and two battery chargers 120, 120'. Figure 5 In the embodiment shown, the first battery charger 120 is configured to connect to the first converter 110 and charge at a first charging voltage. The battery 130 is charged, and the second battery charger 120' is configured to connect to the second converter 110' and charge at the second charging voltage. The battery 130 is charged. When the first converter 110 is connected to the first voltage network N1, the battery 130 is therefore charged by the first battery charger 120 at the first charging voltage. Charging. When the second converter 110' is connected to the second voltage network N2, the battery 130 is charged by the second battery charger 120' at the second charging voltage. Charge.

[0070] Figure 6 A charging station 100 according to an embodiment is shown, wherein the charging station 100 is configured to charge two batteries 130, 130'. Figure 6 In the embodiment shown, the charging station 100 includes two converters 110, 110' and two battery chargers 120, 120'. The first battery charger 120 is configured to charge a first battery 130 temporarily stored at the charging station 100, and the second battery charger 120' is configured to charge a second battery 130' disposed in the mining vehicle / engineering vehicle 400. The first battery charger 120 can be connected to the first converter 110 and charged at a first charging voltage. The first battery 130 is charged, or connected to the second converter 110' and charged at the second charging voltage. The first battery 130 is charged. The second battery charger 120' can be connected to the first converter 110' and charged at the first charging voltage. The second battery 130' is charged, or connected to the second converter 110' and charged at the second charging voltage. Charge the second battery 130', such as Figure 6 As indicated in the document.

[0071] In other embodiments (not shown in the figures), the first battery charger 120 may be connected to the first converter 110, and depending on whether the first converter 110 is connected to the first voltage network N1 or the second voltage network N2, to charge at the first charging voltage. Or the second charging voltage The first battery 130 is charged. Similarly, the second battery charger 120' can be connected to the second converter 110', and depending on whether the second converter 110' is connected to the first voltage network N1 or the second voltage network N2, it charges at the first charging voltage. Or the second charging voltage The second battery 130' is charged. Furthermore, the first battery charger 120 and the second battery charger 120' can be connected to the same converter 110, and each provides a first charging voltage depending on whether the converter 110 is connected to the first voltage network N1 or the second voltage network N2. Or the second charging voltage .

[0072] According to embodiments of the present disclosure, a charging system 300 is provided, the charging system 300 including at least one charging station 100 according to any of the embodiments described herein. Figure 7 A charging system 300 according to an embodiment is shown, wherein the charging system includes two charging stations 100, 100', a first voltage network N1, a second voltage network N2, and two batteries 130, 130'. Each battery 130, 130' may be a vehicle battery for a mining vehicle / construction vehicle 400. In the illustrated embodiment, the first battery 130 is independently arranged (i.e., not currently arranged in the mining vehicle / construction vehicle 400) and connected to the first charging station 100 for charging. The second battery 130' is arranged in the mining vehicle / construction vehicle 400 and connected to the second charging station 10' for charging. The first battery 130 may, for example, be temporarily stored at the first charging station 100 for charging. When charging, the first battery 130 may be swapped with an empty or nearly empty battery in the mining vehicle / construction vehicle 400.

[0073] The first charging station 100 and / or the second charging device 110' can provide the first charging voltage based at least on measurements of the first voltage network N1 and the batteries 130, 130'. Or the second charging voltage As described in any of the embodiments described herein.

[0074] Mining vehicles / engineering vehicles 400 can be any type of vehicle used in mining and / or engineering environments / sites, such as drilling rigs, trucks, loaders, excavators, etc. (Reference) Figure 8 The mining vehicle / engineering vehicle 400 may be, for example, a drilling rig, loading, towing and dumping (LHD) machine, or a mining truck, but is not limited thereto. The mining vehicle / engineering vehicle 400 may include a battery 130, which may be charged by charging station 100 according to any of the embodiments described herein. The mining vehicle / engineering vehicle 400 may be an electric mining vehicle / engineering vehicle.

[0075] According to aspects of this disclosure, a method 200 for charging the battery of a mining vehicle / engineering vehicle is provided. Method 200 can be performed by a charging station 100 according to any of the embodiments described herein. Figure 9 A flowchart of method 200 is shown. Method 200 includes: converting the voltage of a first voltage network N1 into a first charging voltage using a voltage conversion 202. Alternatively, the voltage of the second voltage network N2 can be converted into a second charging voltage. Method 200 further includes: measurements based on the first voltage network N1 and the battery 130 at a first charging voltage. Or the second charging voltage At least one battery 130 is charged 204.

[0076] According to embodiments of this disclosure, charging station 100 may include or be connected to a control unit arranged to control charging station 100 to perform one or more steps of method 200. The control unit can therefore be instructed to be arranged / configured / programmed to control charging station 100 to perform the steps of any of the embodiments described herein. The control unit may be the same device as the previously mentioned controller 140, or a separate device.

[0077] Finally, it should be understood that this disclosure is not limited to the embodiments described above, but also relates to all embodiments that are incorporated within the scope of the appended independent claims.

Claims

1. A charging station (100) for charging batteries of mining vehicles / engineering vehicles, the charging station (100) comprising: At least one converter (110) is configured to be connected to a first voltage network (N1) or a second voltage network (N2), and to convert the voltage of the first voltage network (N1) into a first charging voltage. ) or convert the voltage of the second voltage network (N2) into the second charging voltage ( ); as well as At least one battery charger (120), connected to the converter (110) and configured to charge at the first charging voltage based on measurements of the first voltage network (N1) and / or measurements of at least one battery (130). ) or the second charging voltage ( The battery (130) is charged.

2. The charging station (100) according to claim 1 is configured as follows: Further measurements based on the second voltage network (N2) are taken at the first charging voltage ( ) or the second charging voltage ( The battery (130) is charged.

3. The charging station (100) according to claim 1 or 2 is configured as follows: Further based on at least one voltage threshold or charging current threshold, the first charging voltage ( ) or the second charging voltage ( The battery (130) is charged.

4. The charging station (100) according to claim 1, wherein, The at least one voltage threshold includes zero voltage.

5. The charging station (100) according to any one of the preceding claims, wherein, The measurement of the battery (130) is a state of charge measurement.

6. The charging station (100) according to any one of the preceding claims is configured as follows: Further, based on any one of the grid electricity price, grid service requirements, and changes in renewable energy generation in the first voltage network (N1) and / or the second voltage network (N2), the first charging voltage ( ) or the second charging voltage ( The battery (130) is charged.

7. The charging station (100) according to any one of the preceding claims, comprising: At least two converters (110, 110'), wherein the first converter (110) is configured to connect to the first voltage network (N1) and provide the first charging voltage ( ), and the second converter (110') is configured to connect to the second voltage network (N2) and provide the second charging voltage ( ).

8. The charging station (100) according to claim 7, wherein, The first converter (110) is configured to be connected between the first voltage network (N1) and the battery charger (120), and the second converter (110') is configured to be connected between the second voltage network (N2) and the battery charger (120).

9. The charging station (100) according to claim 7, comprising: At least two battery chargers (120, 120'), wherein the first battery charger (120) is configured to connect to the first converter (110) and charge at the first charging voltage ( The battery (130) is charged by the second charger (120'), and the second battery charger (120') is configured to be connected to the second converter (110') and charge at the second charging voltage (130'). The battery (130) is charged.

10. The charging station (100) according to claim 9, wherein, The first battery charger (120) is configured to charge a first battery (130) temporarily stored at the charging station (100), and the second battery charger (120') is configured to charge a second battery (130') disposed in a mining vehicle / engineering vehicle (400).

11. The charging station (100) according to any one of the preceding claims, wherein, The first voltage network (N1) and the second voltage network (N2) are connected to the same power supply (S1) or different power supplies (S1, S2).

12. The charging station (100) according to any one of the preceding claims, wherein, The first voltage network (N1) and the second voltage network (N2) are AC networks or DC networks.

13. A charging system (300) comprising at least one charging station (100) according to any one of the preceding claims, a first voltage network (N1), a second voltage network (N2) and at least one battery (130).

14. The charging system (300) according to claim 13, wherein, The battery (130) is a vehicle battery for mining vehicles / engineering vehicles.

15. A method (200) for charging a battery of a mining vehicle / engineering vehicle, the method (200) comprising: The voltage of the first voltage network (N1) is converted (202) into the first charging voltage ( ), or convert the voltage of the second voltage network (N2) into the second charging voltage ( );as well as Based on measurements of the first voltage network (N1) and / or measurements of at least one battery (130) at the first charging voltage ( ) or the second charging voltage ( The battery (130) is charged.

16. A computer program having program code for performing the method of claim 15 when the computer program is run on a computer.

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