Charging system used in a battery swapping station or an energy storage station

Abstract

The present invention discloses a charging system for use in a battery exchange station or energy storage station. The charging system includes at least two charging components, a battery charging port, and a control module. The at least two charging components are connected in parallel, and the control module charges quick-change batteries through the battery charging port while calling different numbers of the charging components and / or controlling the output power of each charging component. The present invention can call different numbers of charging components according to different charging needs of the batteries and control the output power of the charging components according to different charging needs of the batteries. This not only effectively enables rapid, integrated charging of batteries with high charging demands, but also appropriately distributes electrical energy, improving charging efficiency, and further meeting users' needs for immediate battery exchange, thereby improving users' battery exchange experience at the battery exchange station.

Description

Technical Field

[0001] This application claims the priority of a Chinese patent application with an application date of December 26, 2019 and an application number of 2019113705183. In addition, this application incorporates the full text of the above-mentioned Chinese patent application by reference. The present invention relates to the field of new energy vehicles, and in particular, to a charging system used in a battery swapping station or an energy storage station.

Background Art

[0002] As a means of transportation of new energy vehicles, electric vehicles have characteristics such as low noise, high energy utilization efficiency, and no exhaust gas, and thus have become a new industry that has been developing rapidly in recent years.

[0003] Energy supply is a crucial part of the industrial chain of electric vehicles, and its mode is closely related to the development of electric vehicles. Since the power source of electric vehicles is a battery, it is necessary to charge the battery to supplement the power according to the time period. At present, most of the electric vehicles in China are charged through the power grid for the general public. When charging the battery, each charging device corresponds to each rapid replacement battery, and each charging device provides electrical energy to the battery corresponding to its number. In the form of charging in such a one-to-one correspondence, when a certain battery is fully charged, the corresponding charging device stops operating, but it cannot immediately supplement the battery that needs charging quickly. In addition, when a certain charging device fails, the corresponding charging stand cannot be used, or the system may still charge the battery with the failed charging device.

[0004] The utility model with the registration verification number CN209305379U discloses a separable battery swapping station including a charging device as a whole. Here, the charging device includes a power distribution port, a power control module, and charging terminals of different categories. The power control module controls the distribution of output power and charges charging terminals such as battery packs. In such a form, although the flexibility of power distribution is increased to a certain extent, essentially, it still charges charging terminals such as battery packs one-to-one based on the total amount of the original charging power. When a certain charging device fails, the battery corresponding to the charging device cannot obtain the supply of electrical energy.

Summary of the Invention

Problems to be Solved by the Invention

[0005] The technical problem to be solved by the present invention is to overcome the defect that in the prior art, each charging device performs one-way charging on the battery corresponding to its number, and to provide a charging system used in a battery swapping station or an energy storage station that can adjust the number of charging components, output power, and corresponding quick-exchange batteries according to the state of the battery or charging components.

Means for Solving the Problems

[0006] The present invention solves the above technical problems by the following technical means.

[0007] The present invention provides a charging system used in a battery swapping station or an energy storage station. The charging system includes at least two charging components, a battery charging port, and a control module. The at least two charging components are connected in parallel. The control module is for calling the charging components with different numbers and / or controlling the output power of each charging component to charge the quick-exchange battery through the battery charging port.

[0008] In the present invention, charging components with different numbers can be called according to different charging demands in the battery, and the output power of the charging components can be controlled according to different charging demands in the battery. Moreover, it has good effects, can not only quickly charge and integrate into the battery with high charging demand, but also can properly distribute electrical energy, improve the charging efficiency, further meet the needs of users while further satisfying the need to immediately replace the battery, and enhance the user experience of battery replacement at the battery replacement station.

[0009] Preferably, the control module calls the charging components with different numbers according to the charging demand of the quick replacement battery, charges the quick replacement battery through the battery charging port while controlling the output power of each charging component, and is for satisfying the charging demand.

[0010] Here, the control module is for calling the charging components with different numbers and controlling the output power of each charging component according to the current electricity amount in the quick replacement battery being charged and / or the current state of each charging component.

[0011] In the present invention, according to the charging demand of the quick replacement battery, the corresponding number of charging components are flexibly called, and by controlling the output power of the charging components, the usage efficiency of each charging component is increased as much as possible.

[0012] In the present invention, since electrical energy can be distributed to the battery that most needs charging, not only the charging flexibility is increased, but also the defect of low efficiency in the conventional one-to-one unchanged charging mode can be overcome, and the charging efficiency is further increased.

[0013] Preferably, each of the charging components has a first output interface, and the first output interfaces of the at least two charging components are connected in parallel through a shunt or a contactor, and the control module controls the shunt or the contactor to control the calling of the charging components with different numbers.

[0014] Here, each of the charging components has a first input interface, and the first input interfaces in the at least two charging components may be integrally powered from an external power source in a form of being connected in parallel via a shared bus bar.

[0015] In the present invention, by connecting the output interfaces of the charging components in parallel, not only can the charging components be controlled to supply electrical energy to the battery according to the demand of the battery, but also, a plurality of charging components can supply power to the battery waiting to be charged to maximize the efficiency of the charging components.

[0016] Preferably, when charging of the quick-exchange battery is completed, the control module is for turning off the electrical connection between the charging component and the battery charging port and instructing the called charging component to stop output.

[0017] In the present invention, when charging is completed, by controlling to turn off the electrical connection and stop the output of electrical energy, not only can wasteful electrical energy output be avoided, but also electrical energy can be saved, the charging efficiency can be increased, the reliability of the entire circuit can be enhanced, and the safety of the charging system can be guaranteed.

[0018] Preferably, the charging system further includes a monitoring module, a calculation module, and an integrated adjustment control module. The monitoring module is for monitoring the current battery parameters of each quick-exchange battery in the station. The calculation module is for obtaining the charging demand of each quick-exchange battery in the current station according to the current battery parameters. The integrated adjustment control module is for calling charging components with different numbers to the battery charging output ports corresponding to the respective quick-exchange batteries according to the charging demands of the respective quick-exchange batteries, and adjusting the output power of each called charging component so that each battery charging output port outputs an appropriate output power for charging each quick-exchange battery.

[0019] Here, the station is a battery replacement station.

[0020] In the present invention, according to the parameters of each monitored rapid replacement battery, different charging demands are calculated for each battery, and further, the number of charging components, the corresponding output power, and the corresponding power supply battery are controlled. Therefore, not only can the one-to-one charging mode in the conventional battery replacement station be changed, but also the electrical energy of the entire battery replacement station can be properly distributed to improve the charging efficiency of the entire battery replacement station.

[0021] Preferably, the charging system further includes an AC energy supply module or a DC energy supply module. The AC energy supply module includes an AC / DC (alternating current / direct current) converter. The input end of the AC / DC converter is connected to a power network, and the output end of the AC / DC converter is connected to the charging component. The AC / DC converter is used to convert the alternating current output from the power network into direct current while adjusting the voltage of the direct current. The DC energy supply module includes a power generation device and a unidirectional DC / DC (direct current / direct current) converter. The input end of the unidirectional DC / DC converter is connected to the power generation device, and the output end of the unidirectional DC / DC converter is connected to the charging component. The unidirectional DC / DC converter is used to adjust the voltage of the direct current output from the power generation device. Alternatively, the DC energy supply module includes a power generation device, a unidirectional DC / DC converter, an energy storage device, and a bidirectional DC / DC converter. The input end of the unidirectional DC / DC converter is connected to the power generation device, and the output end of the unidirectional DC / DC converter is connected to the energy storage device and the charging component respectively. One end of the bidirectional DC / DC converter is connected to the energy storage device, and the other end of the bidirectional DC / DC converter is connected to the power generation device and the charging component respectively. The unidirectional DC / DC converter is used to adjust the voltage of the direct current output from the power generation device, and the bidirectional DC / DC converter is used to adjust the voltage of the direct current output from the unidirectional DC / DC converter. Alternatively, the bidirectional DC / DC converter is used to adjust the voltage of the direct current output from the energy storage device.

[0022] In the present invention, since multiple forms of using energy are provided, it is possible to utilize the alternating current for the general public by directly connecting to the power network, and it is also possible to utilize the direct current provided from the energy storage device or the power generation device. Then, the applicability and availability of the charging system are expanded.

[0023] In the present invention, by optimally arranging the energy storage device, it is possible to basically balance the local energy production and the load using the energy, and satisfy the need to charge new energy vehicles. Moreover, by using a clean energy power generation device including solar power generation and wind power generation, it is possible to maximize both environmental protection and energy utilization.

[0024] Preferably, the charging system further includes an AC energy supply module and an energy storage supply module. The AC energy supply module includes a bidirectional AC / DC converter, and the energy storage supply module includes an energy storage device and a bidirectional DC / DC converter. The AC terminal of the bidirectional AC / DC converter is connected to the power network, the DC terminal of the bidirectional AC / DC converter is connected to the charging component and one end of the bidirectional DC / DC converter respectively, one end of the bidirectional DC / DC converter is further connected to the charging component, and the other end of the bidirectional DC / DC converter is connected to the energy storage device. The bidirectional AC / DC converter is for converting the AC current output from the power network into a DC current while adjusting the voltage of the DC current, or for converting the DC current output from the charging component and / or the DC current output from the bidirectional DC / DC converter into an AC current while adjusting the voltage of the AC current. The bidirectional DC / DC converter is for adjusting the voltage of the DC current output from the energy storage device, or for adjusting the voltage of the DC current output from the bidirectional AC / DC converter.

[0025] In the present invention, the bidirectional AC / DC converter can convert the AC current directly output from the power network into a DC current, can convert the DC current output from the charging component and the power generation device into an AC current, and further can adjust the effective voltage of the converted AC current or DC current.

[0026] Suitably, the monitoring module is for monitoring the current state of the power network.

[0027] The integrated adjustment control module is for instructing the control module to control so that when the current state of the power network is at the power demand bottom, the charging component only receives the amount of electricity output from the power network, and increases the output power of the output port, or for simultaneously instructing the energy storage device to receive the amount of electricity output from the power network. Further, the integrated adjustment control module is for instructing the control module to control to stop the power network from outputting the amount of electricity to the charging component when the current state of the power network is at the power demand peak, and for controlling the energy storage device to output the amount of electricity to the charging component. Or, the integrated adjustment control module is further for instructing the control module to control to stop the power network from outputting the amount of electricity to the charging component when the current state of the power network is at the power demand peak and the number of the fast-exchanging batteries whose current charging has been completed reaches the fully-charged battery threshold, and simultaneously for controlling the energy storage device and the first quantity of the fast-exchanging batteries to output electrical energy to the power network respectively.

[0028] In the present invention, by monitoring the states at different times such as the power demand bottom and the power demand peak in the power network, the charging mode is adjusted according to the charging demand of the fast-exchanging battery, so that the extra amount of electricity in the time period of the power demand bottom can be consumed, and when the power demand reaches the peak, conversely, the pressure of transferring the power in the power network can be eliminated.

[0029] Preferably, the charging system further includes a DC energy supply module, and the DC energy supply module includes a power generation device and a unidirectional DC / DC converter. The input end of the unidirectional DC / DC converter is connected to the power generation device, and the output end of the unidirectional DC / DC converter is respectively connected to the charging component, one end of the bidirectional DC / DC converter, and the DC end of the bidirectional AC / DC converter. The unidirectional DC / DC converter is for adjusting the voltage of the DC current output from the power generation device. The bidirectional DC / DC converter is further for adjusting the voltage of the DC current output from the unidirectional DC / DC converter. The bidirectional AC / DC converter is further for adjusting the voltage of the AC current while converting the DC current output from the unidirectional DC / DC converter into an AC current.

[0030] In the present invention, by connecting the unidirectional DC / DC converter and the bidirectional DC / DC converter in the DC energy supply module, and connecting the unidirectional DC / DC converter and the bidirectional AC / DC converter, not only can the DC current voltage output from the power generation device be further adjusted, but also the electrical energy with the voltage adjusted as required can be provided to the energy storage device. Furthermore, the DC current output from the power generation device can be converted into an AC current to prepare for reverse propagation by the power network, and when the power demand reaches a peak, the pressure on the power network can be reduced.

[0031] Preferably, the monitoring module is for monitoring the current state of the power network, and the integrated regulation and control module is further configured to, when the current state of the power network is at the power demand bottom, command the control module to control such that the charging component only receives the amount of electricity output from the power network, the power generation device only outputs the amount of electricity to the energy storage device, and the control module increases the output power of the output port, or, simultaneously, command the energy storage device to further receive the amount of electricity output from the power network. The integrated regulation and control module is further configured to, when the current state of the power network is at the power demand peak, command the control module to control to stop the power network from outputting the amount of electricity to the charging component, and control the energy storage device and / or the power generation device to output the amount of electricity to the charging component and / or the power network. And / or, the integrated regulation and control module is further configured to, when the number of the fast-switching batteries with the current charging completed reaches the fully charged battery threshold, command the control module to control to stop the power network from outputting the amount of electricity to the charging component, and simultaneously control the energy storage device, the power generation device and the first quantity of the fast-switching batteries to output electrical energy to the power network respectively.

[0032] In the present invention, by monitoring the states at different times such as the power demand bottom and the power demand peak in the power network and the number of fully charged batteries, the energy storage device and the power generation device can be flexibly controlled in the direction of outputting the amount of electricity, so that green energy can be utilized to the maximum extent, and it is possible to help the power network adjust the peak or supplement the bottom.

[0033] Preferably, the at least two charging components are general-purpose charging components, and the charging system further includes at least one redundant charging component, where the redundant charging components are respectively connected in parallel to the general-purpose charging components and are respectively connected to each of the battery charging ports through switches.

[0034] In the present invention, a redundant charging component and a corresponding switch are installed. And the control module can call the redundant charging component to charge the quick-exchange battery by controlling the switch to close. On the other hand, when a failure occurs in the general-purpose charging component corresponding to the quick-exchange battery, it can ensure normal charging of the quick-exchange battery. Also, the charging efficiency of the quick-exchange battery can be improved by the combination of the redundant charging component and the general-purpose charging component.

[0035] Preferably, the control module is for calling the general-purpose charging component in the general-purpose charging mode and charging the quick-exchange battery through the battery charging port. The control module is further for calling the redundant charging component in the special charging mode and charging the quick-exchange battery through the battery charging port.

[0036] In the present invention, by installing and calling the redundant battery, the need to charge the quick-exchange battery can be satisfied, the charging efficiency of the quick-exchange battery can be improved, and the user experience of battery replacement for the battery replacement station or the energy storage station can be further enhanced.

[0037] Preferably, the special charging mode includes a case where a failure occurs in a certain general-purpose charging component. The control module calls the redundant charging component by closing one of the switches and is for charging the quick-exchange battery corresponding to the general-purpose charging component in which the failure has occurred through the battery charging port. And / or, the special charging mode includes a case where the control module receives an additional charging command. The control module calls the redundant charging component and at least one of the general-purpose charging components and is for charging in accordance with the quick-exchange battery that requires additional charging through the battery charging port.

[0038] In the present invention, when attempting to charge a quick-exchange battery at a higher charging rate but the general-purpose charging components do not meet the charging needs of the quick-exchange battery, the control module calls the redundant charging components and the general-purpose charging components to charge in accordance with the quick-exchange battery, thereby increasing the charging speed and improving the charging efficiency. In addition, when a failure occurs in the general-purpose charging components, the redundant charging components are called, and the quick-exchange battery corresponding to the failed general-purpose charging component can be charged directly using the redundant charging components. After the current quick-exchange battery is fully charged, there is no need to wait for other general-purpose charging components to charge the quick-exchange battery corresponding to the failed general-purpose charging component.

Advantages of the Invention

[0039] The positive progress and effects of the present invention are as follows: The charging system used in the battery swapping station or energy storage station provided by the present invention can call different numbers of charging components according to different charging requirements in the battery, and can control the output power of the charging components according to different charging requirements in the battery. It not only has good effects, but also can quickly charge and integrate into the battery with high charging requirements, can properly distribute electrical energy, improve the charging efficiency, and furthermore, it can help regulate the peak and supplement the bottom of the power network.

Brief Description of the Drawings

[0040]

Figure 1

Figure 2

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Figure 4

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Figure 7

Embodiments for Carrying Out the Invention

[0041] Hereinafter, the present invention will be described in detail based on the embodiments, but the present invention is not limited to the scope of the above embodiments.

[0042] <Example 1> As shown in FIG. 1, the charging system used in the battery replacement station or the energy storage station provided in this embodiment includes a first charging component 101, a second charging component 102, a first battery charging port 104, a second battery charging port 105, and a control module 103.

[0043] Here, the first charging component 101 and the second charging component 102 are connected in parallel.

[0044] The control module 103 is for charging the first rapid replacement battery 106 and the second rapid replacement battery 107 via the first battery charging port 104 and the second battery charging port 105 while calling charging components with different numbers and / or controlling the output power of each charging component.

[0045] It should be understood that in this embodiment, two charging components are exemplarily listed, but it is not limited thereto. In specific applications, according to the specifications, requirements, configurations, and practicalities of different battery swapping stations, the number of charging components can be customized, and the output power of each charging component can be dynamically adjusted and controlled. For example, when the power supply demand of a battery swapping station or an energy storage station is relatively low, only 1 to 5 single charging components of 40 kw can be set and combined into a general-purpose distributed charging system as the minimum unit.

[0046] The charging system used in the battery swapping station or energy storage station provided by this embodiment can call charging components with different numbers according to the charging demand in the battery, and can control the output power of the charging components according to different charging demands in the battery. And it can quickly charge and integrate into a battery with high efficiency and high charging demand. Electrical energy can be properly distributed, and the charging efficiency is increased. Furthermore, it can meet the needs of users who immediately swap the battery, and the user experience of battery swapping for the battery swapping station or energy storage station is improved.

[0047] <Example 2> As shown in FIG. 2, the charging system used in the battery swapping station or energy storage station provided by this embodiment includes a control module 203, a first charging component 201, a second charging component 202, a first charging stand 204, a second charging stand 205, and a third charging stand 206. Here, each charging stand corresponds to one battery charging port respectively. The control module 203 is for charging the first rapid replacement battery 207, the second rapid replacement battery 208, and the third rapid replacement battery 209 through the battery charging port while calling charging components with different numbers and / or controlling the output power of each charging component.

[0048] Here, specifically, it is possible to dynamically adjust or control whether the electrical energy of corresponding power is distributed to several batteries by several charging components, or whether each charging component corresponds to several batteries, or whether one battery corresponds to several charging components, according to actual needs.

[0049] Here, in order for the charging components to flexibly and dynamically distribute the electrical energy of appropriate power to the fast-exchange batteries, each charging component has a first output interface respectively, and the first output interfaces in the first charging component 201 and the second charging component 202 are connected in parallel via a shunt or a contactor, and the control module 203 calls different numbers of charging components by controlling the shunt or the contactor. In addition, each charging component has a first input interface respectively, and may be integrally powered from an external power source in a form where the first input interfaces hs in the first charging component 201 and the second charging component 202 are connected in parallel via a shared bus.

[0050] Here, the control module 203 further calls different numbers of charging components according to the charging requirements of each fast-exchange battery, charges the fast-exchange battery via the battery charging port while controlling the output power of each charging component, and may meet the charging requirements of each fast-exchange battery. Suppose the output power of two charging components is both 40 kw. When the control module 203 receives that the charging power required by the fast-exchange battery is 60 kw, the control module 203 calls these two charging components, charges the fast-exchange battery simultaneously, and adjusts the output power of the two charging components to 30 kw together, or adjusts the output power of one charging component to 40 kw and the output power of the other charging component to 20 kw.

[0051] Here, in order for the charging system according to this embodiment to be safer and more reliable, when the control module 203 finishes charging the fast-exchange battery, it turns off the electrical connection between the charging component and the fast-exchange battery charging port, and commands the called charging component to stop without outputting.

[0052] It should be understood that in this embodiment, two charging components, three charging stands corresponding to the battery charging ports, and three rapid replacement batteries for charging are exemplarily listed, but it is not limited thereto. In specific applications, according to the specifications and requirements of different battery replacement stations or energy storage stations, the number of charging devices including charging components and battery charging ports may be customized.

[0053] To better understand this embodiment, specific embodiments are given below to describe this embodiment in detail. Actually, the charging system includes two charging components, namely, the first charging component 201 and the second charging component 202, and it is assumed that the charging system charges two rapid replacement batteries, namely, the first rapid replacement battery 207 and the second rapid replacement battery 208. Many commercially available charging stations (or energy storage stations) or battery replacement stations (or energy storage stations) all supply power by means of a one-to-one wiring form through charging components (charging stands), and the output terminals are also one-to-one. Such a form can charge the charging component corresponding to the first rapid replacement battery 207, but the usage efficiency is relatively low. On the other hand, in this embodiment, in the battery replacement station, according to the needs of customers, different modules and charging units of power can be designed according to the layout of the battery replacement station and the power supply capacity, etc. For example, when the power supply capacity of the battery replacement station is small, only 300 - 400 batteries are required for battery replacement every day, and the charging demand is not very high, a charging component with a power of 30 kw is adopted, and two charging components are combined into the smallest distributed charging unit. The two charging components supply power according to the form that they are connected in parallel through a common bus shared by alternating current for input, and are connected in parallel through a shunt (or contactor) from the corresponding charging base component for each output. The smallest distributed unit combined in this way has the following four different output properties.

[0054] First, the first charging component 201 and the second charging component 202 charge the corresponding first quick-exchange battery 207 and second quick-exchange battery 208 respectively.

[0055] Second, both the first charging component 201 and the second charging component 202 charge the first quick-exchange battery 207. When the current state of the second quick-exchange battery 208 is fully charged, the second charging component 202 is in an idle waiting state. Since the power level of the first quick-exchange battery 207 is low but the charging demand is most urgent, the control module 203 may control the first charging component 201 and the second charging component 202 to charge the first quick-exchange battery 207 simultaneously.

[0056] Third, both the first charging component 201 and the second charging component 202 charge the second quick-exchange battery 208. For example, when the current state of the first quick-exchange battery 207 is fully charged, the second charging component 202 is in an idle waiting state. Since the power level of the second quick-exchange battery 208 is low but the charging demand is most urgent, the control module controls the first charging component 201 and the second charging component 202 to charge the second quick-exchange battery 208 simultaneously.

[0057] Fourth, when a failure occurs in the first charging component 201 (or the second charging component 202), the control module 203 controls the non-failed charging component to separately charge the first quick-exchange battery 207 and the second quick-exchange battery 208 sequentially.

[0058] According to the above form, the layout of a plurality of distributed units can be realized, and a charging network that meets the needs can be realized.

[0059] It should be understood that if the battery replacement volume at the battery replacement station is large and the demand for charging is high, charging components with even greater power may be selected, and accordingly, a larger number of charging components may be installed in the charging unit. Alternatively, a larger number of charging units may be installed in the entire charging system used in the battery replacement station or the energy storage station to meet the charging demand.

[0060] In this embodiment, the charging system used in the battery replacement station or the energy storage station can meet the corresponding needs through customization according to the specifications and requirements of different battery replacement stations or energy storage stations. Due to the characteristic of integrating charging, the charging components that are idle can be integrated into the rapidly replaceable batteries that are in a hurry to be charged, so that charging can be carried out and the efficiency of the charging components can be utilized to the maximum extent.

[0061] In this embodiment, the reliability of the charging system used in the battery replacement station or the energy storage station is enhanced. In the distributed battery replacement station or the energy storage station, the charging system with a single charging mode is integrated by the charging component control microprocessor, or the battery data of each charging unit is shared. With this concept, integrated management is carried out for modularization, and the charging power can be freely adjusted within a certain range. When charging a single battery corresponding to a distributed single charging component during charging, it is possible to completely avoid the occurrence of substantial problems in charging and business operations for customers due to failures, and the effect of reliable and stable operation can be achieved.

[0062] In this embodiment, since the charging system uses designs such as standardization, modularization, integration, serialization, and customization, all the controllers in the charging system can use the concept of "everything is connected to the Internet" to enable each charging component to communicate with each other and achieve data transmission and reception. When it is necessary to add or remove a certain charging component, it is simple and convenient to connect a new charging unit to the network of the charging system, or even if it is removed from the network of the charging system, it will not affect the operation of other charging units.

[0063] In this embodiment, different numbers of charging components may be called according to different charging demands in the battery, and the output power of the charging components may be controlled according to different charging demands in the battery. Then, it can charge the battery with high efficiency and high charging demand quickly and integrally, can distribute electrical energy properly, can improve the charging efficiency, can further meet the needs of users who replace the battery immediately, and can enhance the user experience of battery replacement at the battery replacement station.

[0064] In this embodiment, not only can electrical energy be distributed to the battery that most needs charging, but also the situation where a malfunctioning charging component still charges the battery waiting to be charged can be avoided, which increases the flexibility of charging, overcomes the defect of low effectiveness in the conventional one-to-one charging mode, and further improves the charging efficiency.

[0065] In this embodiment, when the charging is completed, by controlling in such a way as to turn off the electrical connection or stop the output of electrical energy, not only can the output of wasted electrical energy be avoided, but also electrical energy can be saved, the charging efficiency can be improved, the reliability of the entire circuit can be enhanced, and the safety of the charging system can be guaranteed.

[0066] <Example 3> This embodiment provides a charging system used in a battery swapping station or an energy storage station, which is a further improvement over Embodiment 2. As shown in FIG. 3, the charging system according to this embodiment further includes a monitoring module 301, a calculation module 302, and an integrated regulation and control module 303.

[0067] Here, the monitoring module 301 is for monitoring the current battery parameters of each rapid replacement battery in the battery swapping station or the energy storage station.

[0068] The calculation module 302 is for obtaining the charging demand of each rapid replacement battery in the current battery swapping station or the current energy storage station based on the current battery parameters.

[0069] The integrated regulation and control module 303 is for enabling the control module 203 to call different charging components to the battery charging output ports corresponding to each rapid replacement battery according to the charging demand of each rapid replacement battery, and to adjust the output power of each called charging component, so as to command each battery charging output port to output an appropriate output power for charging each rapid replacement battery.

[0070] Here, the monitoring module 301 may monitor the current battery parameters of each rapid replacement battery by means of a BMS (Battery Management System).

[0071] To better understand this embodiment, specific examples will be given and described below for this embodiment. When the current electrical energy output is limited but the number of batteries waiting to be charged is relatively large, if the monitoring module 301 monitors that the demand for charging the batteries waiting to be charged is not high together, the calculation module 302 can calculate the current electrical energy and distribute it evenly to each battery waiting to be charged. For example, the integrated adjustment control module 303 can control each battery to reduce the power respectively and increase the charging time, so as to meet the charging demand of each battery. Further, when the monitoring module 301 monitors that there are some batteries with high charging demand among the batteries waiting to be charged, for example, when there is a possibility of using a certain battery after one hour, the calculation module 302 calculates the appropriate power for integrated output to the batteries with high charging demand, and the integrated adjustment control module 303 increases the output power to integrally charge the batteries with high charging demand. Then, when the battery is fully charged, it charges other batteries.

[0072] In this embodiment, different charging demands are calculated for each battery according to the monitored parameters of each rapid replacement battery. As a result, not only can the one-to-one charging mode in the battery replacement station be changed, but also the electrical energy of the entire battery replacement station can be properly distributed, and the charging efficiency of the entire battery replacement station can be improved.

[0073] <Example 4> This embodiment provides a charging system used in a battery replacement station or an energy storage station, which is a further improvement over Embodiment 2 or Embodiment 3. The charging system according to this embodiment further includes an energy supply module. The energy supply module according to this embodiment may only include an AC energy supply module as shown in FIG. 4, or may only include a DC energy supply module as shown in FIG. 5, or may only include an AC energy supply module as shown in FIG. 4 and a DC energy supply module as shown in FIG. 5.

[0074] Here, the AC energy supply module includes an AC / DC converter 401. The input terminal of the AC / DC converter 401 is connected to the power network, and the output terminal of the AC / DC converter is connected to the charging component. The AC / DC converter is used to convert the alternating current output from the power network into a direct current and adjust the voltage of the direct current.

[0075] The DC energy supply module includes a power generation device 501 and a unidirectional DC / DC converter 502. The input terminal of the unidirectional DC / DC converter 502 is connected to the power generation device 501, and the output terminal of the unidirectional DC / DC converter 502 is connected to the charging component. The unidirectional DC / DC converter 502 is used to adjust the voltage of the direct current output from the power generation device 501. Here, the power generation device includes a clean energy power generation device such as a solar power generation or a wind power generation system.

[0076] In this embodiment, by providing various forms of energy utilization, it is possible to utilize the alternating current directly connected to the power network for the general public, and it is also possible to utilize the direct current provided by the power generation device. Therefore, the applicability and availability of the charging system are expanded.

[0077] <Example 5> This embodiment provides a charging system for use in a battery swapping station or an energy storage station, which is basically the same as Embodiment 4, but the difference is that, as shown in FIG. 6, the DC energy supply module according to this embodiment further includes an energy storage device 503 and a bidirectional DC / DC converter 504. The input end of the unidirectional DC / DC converter 502 is connected to the power generation device 501, the output end of the unidirectional DC / DC converter 502 is connected to the energy storage device 503 and the charging component respectively, one end of the bidirectional DC / DC converter 504 is connected to the energy storage device 503, the other end of the bidirectional DC / DC converter 504 is connected to the power generation device 501 and the charging component respectively. The unidirectional DC / DC converter 502 is for adjusting the voltage of the DC current output from the power generation device 501, and the bidirectional DC / DC converter 504 is for adjusting the voltage of the DC current output from the unidirectional DC / DC converter 502, or the bidirectional DC / DC converter 504 is for adjusting the voltage of the DC current output from the energy storage device 503.

[0078] In this embodiment, by providing various forms of energy utilization, it is possible to utilize the alternating current for the general public directly connected to the power network, and also to utilize the direct current provided by the power generation device, so the applicability and availability of the charging system are expanded.

[0079] In this embodiment, by optimally arranging the energy storage device, it is possible to basically balance the local production of energy and the load of electricity consumption, and meet the demand for charging new energy vehicles. Furthermore, by using a power generation device for clean energy including solar power generation, wind power generation, etc., it is possible to realize the organic combination of environmental protection and energy utilization as much as possible.

[0080] <Embodiment 6> This embodiment provides a charging system for use in a battery swapping station or an energy storage station, which is basically the same as Embodiment 5, but the difference lies in that the AC / DC converter 401 according to Embodiment 5 is embodied as a bidirectional AC / DC converter. Further, in this embodiment, the charging system only includes an energy storage device 503 and a bidirectional DC / DC converter 504, and both the energy storage device 503 and the bidirectional DC / DC converter 504 combine to form an energy storage supply module.

[0081] The AC terminal connecting to the power network in the bidirectional AC / DC converter and the DC terminal in the bidirectional AC / DC converter are respectively connected to a charging component and one end of the bidirectional DC / DC converter 504. One end of the bidirectional DC / DC converter 504 is further connected to the charging component, and the other end of the bidirectional DC / DC converter 504 is connected to the energy storage device 503.

[0082] The bidirectional AC / DC converter is for adjusting the voltage of the DC current while converting the AC current output from the power network into a DC current, or the bidirectional AC / DC converter is for adjusting the voltage of the AC current while converting the DC current output from the charging component and / or the DC current output from the bidirectional DC / DC converter 504 into an AC current.

[0083] The bidirectional DC / DC converter 504 is for adjusting the voltage of the DC current output from the energy storage device, or the bidirectional DC / DC converter is for adjusting the voltage of the DC current output from the bidirectional AC / DC converter.

[0084] In this embodiment, the bidirectional AC / DC converter can not only convert the AC current output from the power network into a DC current to charge the quick-exchange battery or the energy storage device, but also convert the DC current output from the charging component and the power generation device into an AC current and output it in the opposite direction to the power network to reduce the peak or supplement the bottom.

[0085] In the present invention, by optimally arranging the energy storage device, it is possible to basically balance the local production of local energy and the electric consumption load, and to meet the demand for charging new energy vehicles. By using a power generation device for clean energy including solar power generation and wind power generation, it is possible to realize the organic coupling of environmental protection and energy utilization to the greatest extent possible.

[0086] <Example 7> This embodiment provides a charging system used in a battery exchange station or an energy storage station, and is a further improvement over Embodiment 5 or Embodiment 6. In this embodiment, the monitoring module 301 is for monitoring the current state of the power network.

[0087] The integrated regulation control module 303 instructs the control module 203 to control such that when the current state of the power network is at the bottom of the power demand, the charging component receives only the amount of electricity output from the power network, increases the output power from the output port, or simultaneously instructs the energy storage device to receive the amount of electricity output from the power network.

[0088] The integrated regulation control module 303 further instructs the control module 203 to control to stop the power network from outputting the amount of electricity to the charging component when the current state of the power network is at the peak of the power demand, and to control the energy storage device 503 to output the amount of electricity to the charging component. Or, the integrated regulation control module further instructs the control module 203 to control to stop the power network from outputting the amount of electricity to the charging component when the current state of the power network is at the peak of the power demand and the number of fast-exchange batteries that have completed charging currently reaches the battery threshold of full charge, and at the same time, to control the energy storage device 503 and the first number of fast-exchange batteries to output electrical energy to the power network respectively.

[0089] Here, the monitoring module 301 is used to connect to the power network monitoring system to monitor the parameters of the current power network, and also to monitor the parameters in the current battery swapping station via the CAN (Controller Area Network) bus. Additionally, the monitoring module 301 may obtain the big data of all battery swapping stations from the external cloud side to optimize the current battery swapping station.

[0090] Here, the current state of the power network includes that in different time periods such as the power demand peak and the power demand bottom, and the electricity consumption cost varies according to different time periods. Therefore, in this embodiment, by monitoring different time periods, the utilization of electrical energy can be suppressed to reduce costs, and the efficiency of using electrical energy can be improved.

[0091] Here, the monitoring module 301 is connected to the Internet and, together with the cloud platform in the battery swapping station via the Internet, instantly shares big data. The calculation module 302 controls battery swapping and battery charging at the battery swapping station or the energy storage station terminal, calculates personalized and implementable means, and may also integrate and output and manage multiple pieces of information such as the operating status, mode, and alarm of the charging components in the station.

[0092] In this embodiment, via the CAN bus, the real-time data of each monitored battery is instantly collected, and the collected data is integrated together with the current electricity consumption time period of this station, the demand for battery swapping in the current station, etc., so that the control module controls the charging components to output appropriate electrical energy to the corresponding battery.

[0093] To better understand this embodiment, a specific example is given below to explain this embodiment in detail.

[0094] Suppose that the current battery swapping station includes three charging units, and each charging unit 3 includes five charging components. In this case, the battery swapping time at the battery swapping station is during the rush hour, for example, from 7:00 to 9:00. At the same time, the power network also reaches the peak of power demand. Most of the batteries at the battery swapping station are fully charged, and it is possible to meet the need for battery swapping by charging with normal low power. When an electric vehicle tries to swap the battery at the battery swapping station and the power of the swapped battery is insufficient, the integrated regulation and control module commands to stop without obtaining electrical energy from the power network, and only receives electrical energy from the energy storage device and / or the power generation device. At the same time, the control module may control to charge the battery with the minimum power. After the morning rush hour passes, since the electricity consumption in the power network also returns to normal time periods, the integrated regulation and control module appropriately adjusts the power of the charging components according to the current electricity level and demand of the batteries at the battery swapping station to charge the batteries. For example, when the individual battery electricity level is low and there are idle charging components, other idle charging components in the same charging unit are activated to increase the charging power of the battery and complete the charging as quickly as possible. Of course, here, the increased charging power is appropriate for charging the battery. When the power network is at the peak of power demand, the integrated regulation and control module stops charging the rapid replacement batteries at the battery swapping station, and it is also possible that the fully charged predetermined rapid replacement batteries, energy storage device and / or power generation device transmit power to the power network and resume charging the rapid replacement batteries again after the peak has passed.

[0095] On the one hand, during the night time period when electricity consumption is at the bottom, the demand for battery replacement is low, and since the time period is long, the battery can be deeply charged with a small current, the individual batteries can be maintained in a well-balanced manner, and the extra electricity can be charged into the energy storage device. In this way, by using the discount of "top, peak, flat, bottom" in the power network, the expenditure can be reduced, the pressure on providing power to the power network can be reduced, and the extra electricity in the bottom time period can be consumed.

[0096] In this embodiment, the management of modularizing the charging components by the monitoring module, the calculation module and the integrated regulation and control module can perform real-time monitoring based on various aspects such as the power network load pressure, the safety state of the charging components, the battery health level, the current temperature, the device operation state and the current operation pressure, and can automatically and properly distribute the electrical energy to each battery. And not only the service level and business efficiency in the battery replacement station or the energy storage station are improved, but also the operating costs of the charging station or the energy storage station can be reduced, the difficulty of managing employees can be reduced, the service quality and business efficiency in the battery replacement station or the energy storage station are improved, and the customer revenue is increased.

[0097] In this embodiment, by arranging the charging system used in the battery replacement station or the energy storage station in a distributed charging network, first, the failure rate of the equipment is reduced and the maintenance cost is significantly lowered. Next, with the charging form in which the charging power can be adjusted, originally, the charging method with a constant current is changed, and the charging power and current are intelligently and immediately adjusted according to the demand for charging the battery, the load and operation pressure of the power network, etc., so that the charging efficiency is increased and the operation is effectively carried out by properly distributing the energy.

[0098] In this embodiment, according to the specifications and requirements of different battery swapping stations, corresponding demands can be customized and realized, so that different current parameters may be set. And based on the characteristic of integrated charging, the efficiency of charging components in the same charging unit can be maximally improved.

[0099] <Example 8> This embodiment provides a charging system used in a battery swapping station or an energy storage station, and is a further improvement over Embodiment 5.

[0100] Here, the AC / DC converter according to this implementation is a bidirectional AC / DC converter.

[0101] In this embodiment, the input end of the unidirectional DC / DC converter is connected to the power generation device 501, and the output end of the unidirectional DC / DC converter 502 is respectively connected to the charging component, one end of the bidirectional DC / DC converter 504, and the DC end of the bidirectional AC / DC converter. The unidirectional DC / DC converter 502 is for adjusting the voltage of the DC current output from the power generation device 501. The bidirectional DC / DC converter 504 is for adjusting the voltage of the DC current output from the unidirectional DC / DC converter 504.

[0102] The bidirectional AC / DC converter is for converting the DC current output from the unidirectional DC / DC converter 502 into an AC current while adjusting the voltage of the AC current.

[0103] In this embodiment, the monitoring module 301 is for monitoring the current state of the power network.

[0104] When the current state of the power network is at the power demand bottom, the integrated regulation control module 303 instructs the control module 203 to control such that the charging component only receives the amount of electricity output from the power network, controls the power generation device 501 to output the amount of electricity only to the energy storage device 503, increases the output power from the output port, or, at the same time, instructs to control such that the energy storage device 503 also receives the amount of electricity output from the power network.

[0105] When the current state in the power network is at the power demand peak, the integrated regulation control module 303 instructs the control module 203 to control to stop such that the power network does not output the amount of electricity to the charging component, and is for controlling the energy storage device 503 and / or the power generation device 501 to output the amount of electricity to the charging component and / or the power network. And / or, when the number of fast-exchange batteries with the current charging completed reaches the threshold value of the fully charged batteries, the integrated regulation control module 303 further instructs the control module to control to stop such that the power network does not output the amount of electricity to the charging component, and at the same time, is for controlling the energy storage device 503, the power generation device 501, and the first number of fast-exchange batteries to output the electrical energy to the power network respectively.

[0106] In this embodiment, in the DC energy supply module, by connecting the unidirectional DC / DC converter and the bidirectional DC / DC converter, and also connecting the connected unidirectional DC / DC converter and the bidirectional AC / DC converter, the DC current voltage output from the power generation device can be further adjusted, and the electrical energy with the voltage adjusted can be supplied to the energy storage device for storage. Thus, by converting the DC current output from the power generation device into an AC current and outputting it in the opposite direction to the power network, the pressure when the power demand in the power network reaches the peak can be further reduced.

[0107] In this embodiment, by monitoring the states at different times such as the bottom of power demand and the peak of power demand in the power network, and the number of fully charged batteries, the direction of the amount of electricity output from the energy storage device and the power generation device can be controlled, and the electrical energy can be automatically and appropriately distributed to each battery. Moreover, it is possible to quickly charge the batteries with high efficiency and high charging demand, store extra electrical energy for emergency, and appropriately output the electrical energy in the opposite direction to the power network, which helps to reduce the peak and supplement the bottom of the power network.

[0108] <Example 9> This embodiment provides a charging system, which is a further improvement over any one of Embodiments 1 to 8. In this embodiment, the first charging component, the second charging component, and other charging components in the charging system are all general-purpose charging components, and the control module specifically calls the general-purpose charging components in the general-purpose charging mode to charge the quick-exchange battery through the battery charging port.

[0109] The charging system according to this embodiment further includes at least one redundant charging component. The redundant charging component is for charging the quick-exchange battery as an uninterruptible power supply. Here, the redundant charging components are respectively connected in parallel to the general-purpose charging components and are respectively connected to each battery charging port through switches.

[0110] In the general charging mode, the control module does not need to call the redundant charging components to charge the quick - replaceable battery. In a specific embodiment, in the general charging mode, the control module controls to turn off the switch between the redundant charging components and the corresponding battery charging port, and charges the quick - replaceable battery only using the general charging components. In the special charging mode, the control module calls the redundant charging components and charges the corresponding quick - replaceable battery through the corresponding battery charging port to meet the need to charge the quick - replaceable battery. In a specific embodiment, in the special charging mode, the control module controls to turn on the switch between the redundant charging components and the corresponding battery charging port, and conducts the connection between the redundant charging components and the battery charging port to call the redundant charging components.

[0111] In the general charging mode, the general charging components can meet the charging needs of the quick - replaceable battery. On the other hand, in the special charging mode, when the charging rate for the quick - replaceable battery needs to be increased, or when a failure occurs in the general charging components for charging the quick - replaceable battery and the general charging components cannot meet the need to charge the quick - replaceable battery, the control module may call the redundant battery to charge the quick - replaceable battery.

[0112] Here, the specific form of realizing the redundant charging components may be selected according to actual needs. In this embodiment, in order to improve the stability of the entire charging system, the redundant charging components are installed in the charging components that are the same as other charging components.

[0113] In this embodiment, by installing and calling the redundant battery, not only can the need to charge the quick - replaceable battery be met, but also the charging efficiency of the quick - replaceable battery can be improved. Furthermore, the user's battery - replacement experience for the battery - swapping station or the energy - storage station can be enhanced.

[0114] In a specific embodiment, the initial charging mode is a general-purpose charging mode. Correspondingly, the initial state of the switch between the redundant charging component and the corresponding battery charging port is the off state. When the control module enters the special charging mode, it controls the switch between the redundant charging component and the corresponding battery charging port to turn on, thereby conducting the circuit, calling the redundant charging component, and charging the quick-exchange battery through the corresponding battery charging port.

[0115] In this embodiment, multiple redundant charging components may be installed. In a specific scenario, each redundant charging component may be installed in parallel connection with a predetermined general-purpose charging component. For example, in a specific case, when three redundant charging components and eight general-purpose charging components are installed, the first redundant charging component is installed in parallel connection with the three general-purpose charging components, the second redundant charging component is installed in parallel connection with the two general-purpose charging components located in the middle, and the third redundant charging component is installed in parallel connection with the next three general-purpose charging components. Then, the control module controls the on / off of the switching switch in the circuit from the corresponding redundant charging component to the target battery charging port, so as to control the circuit to be intermittent, call the corresponding redundant charging component to charge the corresponding quick-exchange battery, or prohibit charging the corresponding quick-exchange battery. In the second specific scenario, all the redundant charging components may be installed in parallel connection with the general-purpose charging components. In this form, the control module can simultaneously call multiple redundant charging components and control them to charge one or more quick-exchange batteries together. As a result, the charging speed of the quick-exchange battery becomes faster. On the other hand, when a failure occurs in a certain redundant charging component, it can ensure that the charging process of the quick-exchange battery waiting for charging becomes smooth. It should be understood that the above specific embodiments are illustrative explanations. In practice, the specific number of redundant charging components, the specific number of general-purpose charging components, or the corresponding relationship between the redundant charging components and the general-purpose charging components may all be installed according to actual needs.

[0116] Figure 7 is a circuit configuration diagram showing the charging system according to this embodiment in a specific scene. Here, the charging system includes one redundant charging component b1 and four general-purpose charging components d1, d2, d3, and d4. The redundant charging component b1 is connected in parallel to the general-purpose charging components d1, d2, d3, and d4, respectively. Here, the general-purpose charging components d1, d2, d3, and d4 supply electrical energy to the quick-exchange batteries BAT1, BAT2, BAT3, and BAT4 through the charging ports corresponding to the quick-exchange batteries BAT1, BAT2, BAT3, and BAT4 in the general-purpose charging mode, respectively.

[0117] Switching switches KM11, KM12, KM13, and KM14 are installed in the circuits from the redundant charging component to the charging ports corresponding to the quick-exchange batteries BAT1, BAT2, BAT3, and BAT4, respectively. Here, the switching switch may generally be installed as a contactor, or may be other types of mechanical or electronic switches for switching. In this embodiment, the form of specifically realizing the switching switch is not limited, and it may be selected according to the actual situation.

[0118] Here, the initial states of the switching switches KM11, KM12, KM13, and KM14 are all off. When a certain quick-exchange battery uses the redundant charging component, the switching switch in the corresponding circuit is closed, and the redundant charging component is used to control charging of the corresponding quick-exchange battery. The specific control flow is as follows.

[0119] In the special charging mode, when a failure occurs in a certain charging component, for example, when a failure occurs in the general-purpose charging component d1, the control module controls to close the switching switch KM11, which is originally in the off state, so that the circuit from the redundant charging component b1 to the general-purpose charging component d1 is turned on, so that the redundant charging module b1 can charge the quick-exchange battery BAT1 through the battery charging port corresponding to the quick-exchange battery BAT1.

[0120] In another special charging mode, the redundant charging component may charge the quick-exchange battery together with the general-purpose charging component corresponding to the quick-exchange battery. For example, when there is a need to charge a certain quick-exchange battery at an accelerated speed, or when the general-purpose charging component corresponding to a certain quick-exchange battery cannot meet the need to charge the quick-exchange battery. Specifically, for example, when the control module receives an additional charging command indicating that it is necessary to perform additional charging on the quick-exchange battery, the control module controls to close the switching switch KM13 that is originally off, so that the circuit from the redundant charging component b1 to the general-purpose charging component d3 is turned on. In this way, the redundant charging component b1 can charge the quick-exchange battery BAT3 through the battery charging port corresponding to the quick-exchange battery BAT3 together with the general-purpose charging component d3.

[0121] In this embodiment, by installing a switching switch in the circuit from the redundant charging component to the quick-exchange battery, the control module controls to close the switching switch to call the redundant charging component to charge the quick-exchange battery. On the other hand, when a failure occurs in the general-purpose charging component corresponding to the quick-exchange battery, it can be guaranteed to charge the quick-exchange battery normally, and the charging efficiency of the quick-exchange battery can be improved by combining the redundant charging component and the general-purpose charging component.

[0122] In this embodiment, switching switches QF11, QF12, QF13, and QF14 may be further installed in the circuits from the general-purpose charging component to the charging ports corresponding to the quick-exchange batteries BAT1, BAT2, BAT3, and BAT4, respectively. When there is no quick-exchange battery that needs to be charged, or when the corresponding quick-exchange battery is fully charged, the control module can control the corresponding switching switch to turn off, so as to avoid the general-purpose charging component from outputting wasted electrical energy. For example, when the quick-exchange battery BAT1 is fully charged or reaches a predetermined charge value, the charging system generates a command to turn off the QF11 switch. When the control module receives the command, it controls the switching switch QF11 to turn off.

[0123] In this embodiment, by installing a switching switch in the circuit from the general-purpose charging component to the charging port corresponding to the quick-exchange battery, when the quick-exchange battery that does not require charging or the corresponding quick-exchange battery is fully charged or reaches a predetermined charging charge value at the charging port, the corresponding switching switch can be controlled to turn off, avoiding the output of wasted electrical energy from the charging system, and further improving the utilization efficiency of electrical energy in the charging system.

[0124] It should be understood that although the above specific scenarios are described as examples, in fact, it is possible to select the number of general-purpose charging components and the number of redundant charging components according to actual needs. Also, the general-purpose charging components and the quick-exchange battery do not necessarily have a one-to-one correspondence relationship, and a plurality of general-purpose charging components can correspond to the same quick-exchange battery according to actual charging demands.

[0125] As described above, specific embodiments of the present invention have been described, but these are merely examples, and it should be understandable to those skilled in the art that the protection scope of the present invention should conform to the scope of the claims. Without departing from the spirit and essence of the present invention, those skilled in the art can make various corrections and changes to these embodiments, and these corrections and changes are also included in the protection scope of the present invention.

Claims

1. A charging system for a battery swapping station or an energy storage station, comprising at least two charging components, a battery charging port, and a control module, wherein the at least two charging components are connected in parallel, the control module is configured to charge a quick swap battery through the battery charging port while calling different numbers of the charging components and / or controlling the output power of each charging component, the charging system further comprises a DC energy supply module, the DC energy supply module includes a power generation device, a unidirectional DC / DC converter, an energy storage device, and a bidirectional DC / DC converter. An input end of the unidirectional DC / DC converter is connected to the power generation device, an output end of the unidirectional DC / DC converter is respectively connected to the energy storage device and the charging components, one end of the bidirectional DC / DC converter is connected to the energy storage device, the other end of the bidirectional DC / DC converter is respectively connected to the power generation device and the charging components. The unidirectional DC / DC converter is for adjusting the voltage of the DC current output from the power generation device, the bidirectional DC / DC converter is for adjusting the voltage of the DC current output from the unidirectional DC / DC converter, or the bidirectional DC / DC converter is for adjusting the voltage of the DC current output from the energy storage device, characterized in that it is a charging system used for a battery swapping station or an energy storage station.

2. The control module is configured to call different numbers of the charging components according to the charging demand of the quick swap battery, and charge the quick swap battery through the battery charging port while controlling the output power of each charging component to meet the charging demand, characterized in that it is the charging system according to claim 1.

3. Each of the charging components has a first output interface, and the first output interfaces of the at least two charging components are connected in parallel through a shunt or a contactor. The control module controls the shunt or the contactor to control the calling of different numbers of the charging components, characterized in that it is the charging system according to claim 2.

4. The control module is further configured to turn off the electrical connection between the charging component and the battery charging port and instruct the called charging component to stop output when the charging of the quick-exchange battery is completed. The charging system according to claim 2 is characterized by this.

5. The charging system further includes a monitoring module, a calculation module, and an integrated adjustment control module. The monitoring module is for monitoring the current battery parameters of each of the quick-exchange batteries at the current station. The calculation module is for obtaining the charging demand of each quick-exchange battery at the current station according to the current battery parameters. The integrated adjustment control module is for calling charging components with different numbers to the battery charging output ports corresponding to the quick-exchange batteries according to the charging demands of the quick-exchange batteries, adjusting the output power of each called charging component, and instructing each battery charging output port to output an appropriate output power for charging each quick-exchange battery. The charging system according to claim 4 is characterized by this.

6. It further includes an AC energy supply module. The AC energy supply module includes an AC / DC converter. The input end of the AC / DC converter is connected to the power network, the output end of the AC / DC converter is connected to the charging component, and the AC / DC converter is for converting the alternating current output from the power network into direct current while adjusting the voltage of the direct current. The charging system according to claim 5 is characterized by this.

7. It further includes an AC energy supply module and an energy storage supply module. The AC energy supply module includes a bidirectional AC / DC converter. The energy storage supply module includes an energy storage device and a bidirectional DC / DC converter. The AC end of the bidirectional AC / DC converter is connected to the power network. The DC end of the bidirectional AC / DC converter is respectively connected to the charging component and one end of the bidirectional DC / DC converter. One end of the bidirectional DC / DC converter is further connected to the charging component, and the other end of the bidirectional DC / DC converter is connected to the energy storage device. The bidirectional AC / DC converter is for adjusting the voltage of the DC current while converting the AC current output from the power network into a DC current, or the bidirectional AC / DC converter is for adjusting the voltage of the AC current while converting the DC current output from the charging component and / or the DC current output from the bidirectional DC / DC converter into an AC current. The bidirectional DC / DC converter is for adjusting the voltage of the DC current output from the energy storage device, or the bidirectional DC / DC converter is for adjusting the voltage of the DC current output from the bidirectional AC / DC converter. The charging system according to claim 5, characterized in that.

8. The monitoring module is further for monitoring the current state of the power network. When the current state of the power network is at the bottom of the power demand, the integrated regulation and control module instructs the control module to control such that the charging component only receives the amount of electricity output from the power network and increases the output power of the output port, or instructs the energy storage device to simultaneously receive the amount of electricity output from the power network. When the current state of the power network is at the peak of the power demand, the integrated regulation and control module instructs the control module to control to stop the power network from outputting the amount of electricity to the charging component, and is for controlling the energy storage device to output the amount of electricity to the charging component, or When the current state of the power network is at the peak of the power demand and the number of the fast-exchange batteries that have completed charging currently reaches the fully charged battery threshold, the integrated regulation and control module instructs the control module to control to stop the power network from outputting the amount of electricity to the charging component, and at the same time, is for controlling the energy storage device and the first quantity of the fast-exchange batteries to output electrical energy to the power network respectively. The charging system according to claim 6, characterized in that.

9. Further comprising a DC energy supply module. The DC energy supply module includes a power generation device and a unidirectional DC / DC converter. The input end of the unidirectional DC / DC converter is connected to the power generation device, and the output end of the unidirectional DC / DC converter is respectively connected to the charging component, one end of the bidirectional DC / DC converter, and the DC end of the bidirectional AC / DC converter. The unidirectional DC / DC converter is for adjusting the voltage of the DC current output from the power generation device. The bidirectional DC / DC converter is further for adjusting the voltage of the DC current output from the unidirectional DC / DC converter. The bidirectional AC / DC converter is further for adjusting the voltage of the AC current while converting the DC current output from the unidirectional DC / DC converter into an AC current. The charging system according to claim 6 is characterized in that.

10. The monitoring module is for monitoring the current state of the power network. When the current state of the power network is at the bottom of power demand, the integrated regulation and control module commands the control module to control the output power of the output port to increase so that the charging component only receives the amount of electricity output from the power network and the power generation device only outputs the amount of electricity to the energy storage device, or at the same time commands the energy storage device to further receive the amount of electricity output from the power network. When the current state of the power network is at the peak of power demand, the integrated regulation and control module commands the control module to control the power network to stop outputting electricity to the charging component and the energy storage device and / or the power generation device to output electricity to the charging component and / or the power network, and / or When the number of the rapidly replaceable batteries that have been fully charged currently reaches the fully charged battery threshold value, the integrated control module stops the power network from outputting the amount of electricity to the charging component. At the same time, the control module is used to command that the energy storage device, the power generation device, and the first quantity of the rapidly replaceable batteries respectively output electrical energy to the power network. The charging system according to claim 9 is characterized by this.

11. The at least two charging components are general-purpose charging components. The charging system further includes at least one redundant charging component, where the redundant charging component is respectively connected in parallel to the general-purpose charging components and is respectively connected to each of the battery charging ports through a switch. The charging system according to any one of claims 1 to 10 is characterized by this.

12. The control module is used to call the general-purpose charging component in the general-purpose charging mode and charge the rapidly replaceable battery through the battery charging port. The control module is further used to call the redundant charging component in the special charging mode and charge the rapidly replaceable battery through the battery charging port. The charging system according to claim 11 is characterized by this.

13. The special charging mode includes the case where a certain general-purpose charging component has a failure. The control module calls the redundant charging component by closing one of the switches and charges the rapidly replaceable battery corresponding to the general-purpose charging component with the failure through the battery charging port, and / or The special charging mode includes the case where the control module receives an additional charging command. The control module calls the redundant charging component and at least one of the general-purpose charging components and charges the rapidly replaceable battery that requires additional charging through the battery charging port. The charging system according to claim 12 is characterized by this.

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