Electric automobile charging system and electric automobile

Abstract

The utility model relates to an electric vehicle charging system and an electric vehicle, the system comprises a control assembly, a switch assembly and an energy storage assembly, the control assembly identifies the current working mode of the vehicle, the switch assembly switches the switch state according to the working mode of the vehicle, and the energy storage assembly comprises a first power supply part and a second power supply part; when the switch assembly is in the first or second switch state, the first power supply part and the second power supply part are correspondingly connected in series or in parallel, the first power supply part and the second power supply part are charged through the charging end, the load end is used for supplying power to the load, and when the switch assembly is in the third state, the first power supply part and the second power supply part supply power to the load through the load end and meanwhile supply power to the electric driving system. Therefore, the problems of complex control, high cost and the like in related technologies are solved, the switching between the high-voltage platform and the low-voltage platform of the charging system is realized, the switching electrical architecture of the charging system is simplified, the low-voltage architecture of the existing electric driving system can be continuously used, and the cost of the whole vehicle is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of electric vehicle charging, and more particularly to an electric vehicle charging system and an electric vehicle. Background Art

[0002] In recent years, the new energy electric vehicle market has developed rapidly, but the anxiety about electric vehicle charging has become increasingly prominent. At present, the fast charging time of electric vehicles generally takes about 1 hour, which greatly reduces the user experience. Charging problems have become one of the important factors affecting the popularization and promotion of electric vehicles. At the same time, with the intensification of competition in the electric vehicle market, reducing the cost of the whole vehicle is also crucial. Therefore, a cost-effective high-voltage super-fast charging system (the high-voltage voltage platform is about 550V~930V) is an important development direction of the new energy electric vehicle industry.

[0003] At present, some manufacturers have proposed to use high-voltage systems for the entire vehicle, but this will cause the entire drive system to switch to a high-voltage system, which will greatly increase costs. In addition, when using ordinary low-voltage charging piles for charging (the low-voltage voltage platform is about 230V-450V), the voltage needs to be increased to high voltage through a DC boost system for charging, which will increase costs. Some manufacturers have also proposed to achieve high-voltage and low-voltage system switching through series and parallel combinations of battery modules to adapt to charging piles on high-voltage and low-voltage platforms, but the proposed solution is relatively complex overall, and a large number of devices such as relays are used, which is not conducive to reducing costs.

[0004] In related technologies, such as patent CN117021978A "A power battery system, electric vehicle and control method", two battery packs are connected in series and parallel to achieve free switching between high and low voltage systems, and the vehicle load is connected in parallel with a group of batteries (low voltage of about 230V to 450V) to realize power supply for a low-voltage platform. The vehicle load can basically use the original low-voltage system architecture, which is conducive to reducing the cost of the vehicle.

[0005] However, the switching of the above-mentioned high and low voltage systems adopts a combination circuit of multiple relays. At the same time, in order to ensure that the voltages of the two battery packs are equal after high-voltage charging, a circuit composed of relays and unidirectional diodes is added. The system control is relatively complex and the number of components used is increased, which has caused a significant increase in cost and urgently needs to be improved. Utility Model Content

[0006] The present application provides an electric vehicle charging system and an electric vehicle to improve the problems of complex system control, large number of components and high cost in related technologies, realize the switching of the high-voltage platform and the low-voltage platform of the charging system, simplify the switching electrical architecture of the charging system, and can use the low-voltage architecture of the existing electric drive system, thereby reducing the cost of the entire vehicle.

[0007] The first aspect of the present application provides an electric vehicle charging system, comprising: a control component, a switch component and an energy storage component, wherein the control component is used to identify the current working mode of the vehicle, wherein the working mode includes a first fast charging mode, a second fast charging mode and a discharge mode; the switch component is connected to the control component, and when the current vehicle is in the first fast charging mode, the switch component is in a first switch state, when the current vehicle is in the second fast charging mode, the switch component is in a second switch state, and when the current vehicle is in the discharge mode, the switch component is in a third switch state; the energy storage component is respectively connected to the charging end, the load end and the electric drive system, and the energy storage component includes a first power supply component and a second power supply component, wherein when the switch component is When the first switch state is in the first switch state, the first power supply and the second power supply are connected in series, and while the first power supply and the second power supply are charged through the charging end, the first power supply and the second power supply supply supply power the load through the load end; when the switch component is in the second switch state, the first power supply and the second power supply are connected in parallel, and while the first power supply and the second power supply are charged through the charging end, the first power supply and the second power supply supply supply power the load through the load end; when the switch component is in the third switch state, the first power supply and the second power supply are connected in parallel, and the first power supply and the second power supply supply supply power the load through the load end and power the electric drive system at the same time.

[0008] According to the above technical means, the problems of complex charging system control, large number of devices and high cost in related technologies are solved. The switching of the working mode of the electric vehicle charging system is realized through the control components, and the electric drive system can continue to use the existing low-voltage platform architecture, thereby reducing the cost of the whole vehicle.

[0009] Optionally, the switch assembly includes: a first switch, a first end of the first switch is connected to the negative electrode of the first power supply, a second end of the first switch is connected to the positive electrode of the second power supply, a third end of the first switch is connected to the fifth end of the first switch, a fourth end of the first switch is respectively connected to the negative electrode of the second power supply, the negative electrode of the charging terminal, the negative electrode of the load terminal and the negative electrode of the electric drive system, and a sixth end of the first switch is respectively connected to the positive electrode of the first power supply and the positive electrode of the charging terminal; a second switch, one end of the second switch is respectively connected to the sixth end of the first switch and the positive electrode of the first power supply, and the other end of the second switch is connected to the positive electrode of the charging terminal; a third switch, one end of the third switch is respectively connected to the other end of the second switch, the positive electrode of the charging terminal and the positive electrode of the load terminal, and the other end of the third switch is connected to the positive electrode of the electric drive system; a fourth switch, one end of the fourth switch is respectively connected to the fourth end of the first switch and the negative electrode of the second power supply, and the other end of the fourth switch is respectively connected to the negative electrode of the charging terminal, the negative electrode of the load terminal and the negative electrode of the electric drive system.

[0010] According to the above technical means, by using multiple switches, the current between the power supply, charging end, load end and electric drive system can be managed more effectively, the efficiency of power management can be improved, and the combination of multiple switches can achieve more precise control and adjustment of the current path.

[0011] Optionally, the first switch is a double-pole double-throw relay.

[0012] According to the above technical means, the double-pole double-throw relay can save the number of ordinary single-pole single-throw relays, simplify the electrical architecture, and thus reduce costs.

[0013] Optionally, the switch component further includes: a first resistor, one end of which is connected to one end of the second switch; and a fifth switch, one end of which is connected to the other end of the first resistor, and the other end of the fifth switch is connected to the other end of the second switch.

[0014] According to the above technical means, the first resistor and the fifth switch are connected in series and then connected in parallel with the second switch, which can effectively avoid the impact of instantaneous current on the power battery, thereby improving the safety and reliability of the power battery.

[0015] Optionally, the second switch to the fifth switch are all relays.

[0016] According to the above technical means, the relay used as a switch has strong impact resistance, thereby ensuring the stability and reliability of the switching power supply, and the relay has high electrical isolation performance, which can effectively isolate the control circuit and the controlled circuit, thereby improving electrical safety. In addition, the relay also has the advantages of long service life and low power consumption.

[0017] Optionally, the control component includes: a control unit, the control unit is connected to the switch component, and the control unit is used to control the switch component to be in a corresponding switch state according to the current working mode of the vehicle; a charging identification unit, the charging identification unit is connected to the control unit, and when the current vehicle interacts with the charging pile, the charging identification unit is used to identify the charging type of the current vehicle and determine the working mode of the current vehicle according to the charging type; a drive identification unit, the drive identification unit is connected to the control unit, and the drive identification unit is used to determine whether the current vehicle is in the discharge mode based on the state of the electric drive system of the current vehicle.

[0018] According to the above technical means, the control component can control the switching state of the switch component, so that the electric vehicle charging system can switch between the first fast charging mode, the second fast charging mode and the discharge mode.

[0019] Optionally, the first power supply component and the second power supply component are both power battery packs.

[0020] According to the above technical means, the power battery pack has a higher energy density, can store a large amount of electrical energy, and provide a longer continuous power supply time. The power battery pack can also provide a higher power output and can meet the demand for a large amount of energy in a short period of time. In addition, compared with other battery technologies, the power battery pack has a higher cycle life.

[0021] Optionally, the above-mentioned electric vehicle charging system further includes: a display component, wherein the display component is connected to the control component, and the display component is used to display the current operating mode of the vehicle.

[0022] According to the above-mentioned technical means, the display component can clearly display the current operating mode of the vehicle, that is, the first fast charging mode or the second fast charging mode or the discharge mode, so that the user can intuitively understand the current charging status and operating mode of the vehicle, and select the appropriate charging mode according to the actual situation, thereby improving the user experience.

[0023] Optionally, the above-mentioned electric vehicle charging system further includes: a reminder component, which is connected to the control component, and the reminder component is used to perform acoustic reminders and / or optical reminders according to the current operating mode of the vehicle.

[0024] According to the above technical means, the reminder component can provide acoustic and / or optical reminders according to the working mode of the vehicle, so as to facilitate the user to understand the charging status of the vehicle and improve the user experience.

[0025] A second aspect of the present application provides an electric vehicle, which includes the above-mentioned electric vehicle charging system.

[0026] According to the electric vehicle of the present application, the above-mentioned electric vehicle charging system solves the problems of complex system control, large number of devices and high cost in the related technology, realizes the switching of the high-voltage platform and the low-voltage platform of the charging system, simplifies the switching electrical architecture of the charging system, and can use the low-voltage architecture of the existing electric drive system, thereby reducing the cost of the whole vehicle.

[0027] Beneficial effects of the utility model:

[0028] (1) This application can realize the switching of the high-voltage platform and the ordinary low-voltage platform of the charging system, support high-voltage platform super-fast charging and be compatible with the existing ordinary low-voltage platform fast charging.

[0029] (2) The present application can enable the electric drive system to continue to use the existing low-voltage platform architecture, and can also simplify the switching electrical architecture of the charging system.

[0030] (3) This application improves the user experience performance of the product, reduces the cost of the entire vehicle, and has high practical feasibility.

[0031] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 A schematic diagram of the structure of an electric vehicle charging system provided in an embodiment of the present application;

[0033] Among them, 10-electric vehicle charging system, 100-control component, 200-switch component, 300-energy storage component, 400-load end, 500-electric drive system, 101-control unit, 102-charging identification unit, 103-drive identification unit, K1-first switch, K2-second switch, K3-third switch, K4-fourth switch, K5-fifth switch, R1-first resistor, 301-first power supply component, 302-second power supply component. DETAILED DESCRIPTION

[0034] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limiting the present application.

[0035] The electric vehicle charging system of the embodiment of the present application is described below with reference to the accompanying drawings. In response to the problems mentioned in the above background technology, such as complex system control, large number of components and high cost, the present application provides an electric vehicle charging system, in which the control component identifies the current working mode of the vehicle, and the switch component switches the switch state according to the working mode of the vehicle. When the switch component is in the first or second switch state, the first and second power supply components are connected in series or in parallel accordingly, and the first and second power supply components are charged through the charging end, and the load is powered by the load end. When the switch component is in the third state, the first and second power supply components power the load through the load end, and power the electric drive system at the same time. As a result, the problems of complex control and high cost of the related technology are solved, the switching of the high-voltage platform and the low-voltage platform of the charging system is realized, the electrical architecture of the charging system switching is simplified, and the low-voltage architecture of the existing electric drive system can be used, reducing the cost of the whole vehicle.

[0036] Specifically, Figure 1 A schematic diagram of the structure of an electric vehicle charging system provided in an embodiment of the present application.

[0037] like Figure 1 As shown, the electric vehicle charging system 10 includes: a control component 100 , a switch component 200 and an energy storage component 300 .

[0038] Among them, the control component 100 is used to identify the current working mode of the vehicle, wherein the working modes include a first fast charging mode, a second fast charging mode and a discharge mode; the switch component 200 is connected to the control component 100, when the current vehicle is in the first fast charging mode, the switch component 200 is in the first switch state, when the current vehicle is in the second fast charging mode, the switch component 200 is in the second switch state, and when the current vehicle is in the discharge mode, the switch component 200 is in the third switch state; the energy storage component 300 is respectively connected to the charging end, the load end 400 and the electric drive system 500, and the energy storage component 300 includes a first power supply 301 and a second power supply 302, wherein, when the switch component 200 is in the first switch state, the first power supply 301 and the second power supply 302 The two power supplies 302 are connected in series, and while the first power supply 301 and the second power supply 302 are charged through the charging terminal, the first power supply 301 and the second power supply 302 supply power to the load through the load terminal 400; when the switch component 200 is in the second switch state, the first power supply 301 and the second power supply 302 are connected in parallel, and while the first power supply 301 and the second power supply 302 are charged through the charging terminal, the first power supply 301 and the second power supply 302 supply power to the load through the load terminal 400; when the switch component 200 is in the third switch state, the first power supply 301 and the second power supply 302 are connected in parallel, and the first power supply 301 and the second power supply 302 supply power to the load through the load terminal 400, and at the same time power the electric drive system 500.

[0039] In some embodiments, the first power supply 301 and the second power supply 302 are both power battery packs. Preferably, the first power supply 301 and the second power supply 302 are power batteries with the same voltage platform. Exemplarily, the power battery voltage platform may be 230V-450V.

[0040] Optionally, the load end 400 is a load that supports a high-voltage platform and is compatible with a low-voltage platform. Exemplarily, the voltage compatibility range of the load end 400 can be a wide voltage of 230V-930V; the electric drive system 500 is an electric drive system with a low-voltage platform architecture. Exemplarily, the voltage platform of the electric drive system 500 can be 230V-450V, which is not specifically limited here.

[0041] Specifically, the electric vehicle charging system of the embodiment of the present application can realize the series and parallel switching combination of the first power supply component 301 and the second power supply component 302, and can provide low-voltage platform power supply for the load end 400 and the electric drive system 500 when the two groups of power supplies are connected in parallel.

[0042] Optionally, in some embodiments, Figure 1As shown, the switch assembly 200 includes: a first switch K1, a first end of the first switch K1 is connected to the negative electrode of the first power supply 301, a second end of the first switch K1 is connected to the positive electrode of the second power supply 302, a third end of the first switch K1 is connected to the fifth end of the first switch K1, a fourth end of the first switch K1 is respectively connected to the negative electrode of the second power supply 302, the negative electrode DC- of the charging end, the negative electrode HV1- of the load end 400 and the negative electrode HV2- of the electric drive system 500, and a sixth end of the first switch K1 is respectively connected to the positive electrode of the first power supply 301 and the positive electrode DC+ of the charging end; a second switch K2, one end of the second switch K2 is respectively connected to the first switch K1 The sixth end of the switch K3 is connected to the positive electrode of the first power supply 301, and the other end of the second switch K2 is connected to the positive electrode DC+ of the charging end; a third switch K3, one end of the third switch K3 is respectively connected to the other end of the second switch K2, the positive electrode DC+ of the charging end and the positive electrode HV1+ of the load end 400, and the other end of the third switch K3 is connected to the positive electrode HV2+ of the electric drive system 500; a fourth switch K4, one end of the fourth switch K4 is respectively connected to the fourth end of the first switch K1 and the negative electrode of the second power supply 302, and the other end of the fourth switch K4 is respectively connected to the negative electrode DC- of the charging end, the negative electrode HV1- of the load end 400 and the negative electrode HV2- of the electric drive system 500.

[0043] In some embodiments, the first switch K1 is a double-pole double-throw relay, and the second switch K2 to the fifth switch K5 are all relays. The double-pole double-throw relay can save the number of ordinary single-pole single-throw relays and simplify the electrical architecture. The relay also has the advantages of long service life and low power consumption. In addition, the relay as a switch has strong impact resistance and high electrical isolation, which improves electrical safety.

[0044] Specifically, when the double-pole moving contact of the first switch K1 is closed upward, and the second switch K2 and the fourth switch K4 are closed, the first power supply 301 and the second power supply 302 are connected in series to the charging end for charging, and provide high-voltage platform power supply to the load end 400. When the double-pole moving contact of the first switch K1 is closed downward, and the second switch K2 and the fourth switch K4 are closed, the first power supply 301 and the second power supply 302 are connected in parallel to the charging end for charging, and provide low-voltage platform power supply to the load end 400. When the double-pole moving contact of the first switch K1 is closed downward, and the second switch K2, the third switch K3 and the fourth switch K4 are closed, the first power supply 301 and the second power supply 302 are connected in parallel to provide low-voltage platform power supply to the load end 400 and the electric drive system 500.

[0045] Optionally, in some embodiments, Figure 1As shown, the switch component 200 also includes: a first resistor R1, one end of the first resistor R1 is connected to one end of the second switch K2; a fifth switch K5, one end of the fifth switch K5 is connected to the other end of the first resistor R1, and the other end of the fifth switch K5 is connected to the other end of the second switch K2.

[0046] Preferably, the first resistor R1 may be a pre-charging resistor.

[0047] Specifically, the first resistor R1 and the fifth switch K5 are connected in series and then connected in parallel with the second switch K2. When the electric vehicle is charged, the second switch K2 is first opened and the fifth switch K5 is closed, and then the second switch K2 is closed and the fifth switch K5 is opened. This can effectively avoid the impact of instantaneous current on the power battery and improve the safety and reliability of the power battery.

[0048] Optionally, in some embodiments, Figure 1 As shown, the control component 100 includes: a control unit 101, which is connected to the switch component 200, and the control unit is used to control the switch component 200 to be in a corresponding switch state according to the current working mode of the vehicle; a charging identification unit 102, which is connected to the control unit 101, and when the current vehicle interacts with the charging pile, the charging identification unit 102 is used to identify the charging type of the current vehicle and determine the working mode of the current vehicle according to the charging type; a drive identification unit 103, which is connected to the control unit 101, and the drive identification unit 103 is used to determine whether the current vehicle is in a discharge mode based on the state of the electric drive system 500 of the current vehicle.

[0049] Specifically, the control component 100 is connected to the control end of the switch component 200 and controls the switch component 200, so that the electric vehicle charging system 10 enters the first fast charging mode or the second fast charging mode or the discharge mode. When the charging identification unit 102 identifies that the charging type of the current vehicle is high-voltage super fast charging, the switch component 200 is controlled to operate and switch the charging system to the first fast charging mode. When the charging identification unit 102 identifies that the charging type of the current vehicle is ordinary low-voltage fast charging, the switch component 200 is controlled to operate and switch the charging system to the second fast charging mode. When the drive identification unit 103 identifies that the state of the electric drive system is vehicle driving, the switch component 200 is controlled to operate and switch the charging system to the discharge mode.

[0050] Optionally, in some embodiments, the above-mentioned electric vehicle charging system 10 further includes: a display component, the display component is connected to the control component 100, and the display component is used to display the current working mode of the vehicle.

[0051] Specifically, the display component provides an intuitive display of the current vehicle operating mode, which allows users to intuitively understand the vehicle's current charging status and operating mode and select a suitable operating mode based on actual conditions, thereby meeting charging needs in different scenarios and improving the user experience.

[0052] Optionally, in some embodiments, the above-mentioned electric vehicle charging system 10 further includes: a reminder component, the reminder component is connected to the control component 100, and the reminder component is used to perform acoustic reminders and / or optical reminders according to the current working mode of the vehicle.

[0053] Optionally, the embodiment of the present application can provide an acoustic reminder through a vehicle-mounted speaker, and can provide an optical reminder through a vehicle-mounted display screen, which is not specifically limited here.

[0054] Specifically, the reminder method of the present application can be an acoustic reminder device that controls the vehicle to issue a reminder, such as a voice broadcast of "the current working mode of the vehicle is the first fast charging mode", etc. Reminders can also be made through optical reminder devices, such as flashing indicator lights in the vehicle, etc. The flashing type can be set in advance to correspond to the situation, or displayed through a logo on the vehicle display screen.

[0055] During the specific implementation process, when controlling the vehicle to give reminders according to the current working mode, reminders can be given only through an acoustic reminder device, or only through an optical reminder device, or reminders can be given through both an acoustic reminder device and an optical reminder device at the same time, and no specific limitation is made here.

[0056] In order to facilitate technical personnel in this field to more clearly and intuitively understand the first fast charging mode, the second fast charging mode and the discharge mode of the electric vehicle charging system in the embodiment of the present application, the first fast charging mode can be defined as a high-voltage platform super-fast charging mode, the second fast charging mode can be defined as a normal low-voltage platform fast charging mode, and the discharge mode can be defined as a normal low-voltage platform discharge mode. Each mode is described in detail below.

[0057] Specifically, when the current vehicle is in the high-voltage platform super-fast charging mode, the first power supply 301 and the second power supply 302 are connected in series to the charging end for charging, and the first power supply 301 and the second power supply 302 simultaneously supply power to the load end 400. Specifically, when the electric vehicle interacts with the charging pile information, the charging identification unit 102 in the control component 100 identifies that the charging type of the charging pile is a high-voltage platform super-fast charging (exemplarily, the charging end voltage is high voltage, about 550V-930V), the charging identification unit 102 transmits the information to the control unit 101, and the control unit 101 controls the switch component 200 to operate, switches the charging system to the high-voltage platform super-fast charging mode, and completes the high-voltage platform super-fast charging. At the same time, the charging system provides a high voltage to the load end 400 (exemplarily, the load end 400 voltage is high voltage, about 550V-930V). Since the voltage platform is doubled, the charging current remains unchanged, and the charging rate is twice that of the battery with the same power, the charging time is greatly shortened, and the user experience is improved.

[0058] When the current vehicle is in the normal low-voltage platform fast charging mode, the first power supply 301 and the second power supply 302 are connected in parallel to the charging end for charging, and the first power supply 301 and the second power supply 302 supply power to the load end 400 at the same time. Specifically, when the electric vehicle interacts with the charging pile information, when the charging identification unit 102 in the control component 100 identifies that the charging type of the charging pile is a normal low-voltage platform fast charging (exemplarily, the charging end voltage is low voltage, about 230V-450V), the charging identification unit 102 transmits the information to the control unit 101, and the control unit 101 controls the switch component 200 to operate, switches the charging system to the normal low-voltage platform fast charging mode, and completes the normal low-voltage platform fast charging. At the same time, the charging system provides a normal low voltage to the load end 400 (exemplarily, the load end voltage is low voltage, about 230V-450V). Since the voltage platform remains unchanged, the charging pile of the existing normal voltage platform can be used for charging, which improves the compatibility of the charging pile, and the charging rate is consistent with the battery with the same power, and the charging time is not affected.

[0059] When the current vehicle is in the normal low-voltage platform discharge mode, the first power supply 301 and the second power supply 302 are connected in parallel to the load end 400 and the electric drive system 500, and the first power supply 301 and the second power supply 302 simultaneously supply power to the load end 400 and the electric drive system 500. Specifically, when the vehicle is driving, the drive identification unit 103 in the control component 100 identifies that the state of the electric drive system is when the vehicle is driving (exemplarily, the electric drive system 500 of the electric vehicle receives a power-on instruction), and the drive identification unit 103 transmits the information to the control unit 101, and the control unit 101 controls the switch component 200 to operate, switches the charging system to the normal low-voltage platform discharge mode, and completes the supply of normal low voltage to the load end 400 and the electric drive system 500 (exemplarily, the voltage of the load end 400 and the electric drive system 500 is low voltage, about 230V-450V). Since the voltage platform remains unchanged, the low-voltage architecture of the existing electric drive system can be used, thereby reducing the cost of the entire vehicle.

[0060] As a result, the switching between the high-voltage platform and the ordinary low-voltage platform of the electric vehicle charging system is realized, supporting super-fast charging of the high-voltage platform and supporting fast charging of the existing ordinary low-voltage platform, and enabling the electric drive system to use the existing low-voltage platform architecture, thereby improving user experience and reducing vehicle costs.

[0061] According to the electric vehicle charging system of the embodiment of the present application, the control component identifies the current working mode of the vehicle, and the switch component switches the switch state according to the working mode of the vehicle. When the switch component is in the first or second switch state, the first and second power supply components are connected in series or in parallel accordingly, and the first and second power supply components are charged through the charging end, and the load is powered by the load end. When the switch component is in the third state, the first and second power supply components power the load through the load end, and power the electric drive system at the same time. Thus, the problems of complex control and high cost of related technologies are solved, the switching of the high-voltage platform and the low-voltage platform of the charging system is realized, the switching electrical architecture of the charging system is simplified, and the low-voltage architecture of the existing electric drive system can be used, reducing the cost of the whole vehicle.

[0062] An embodiment of the present application also provides an electric vehicle, which includes the electric vehicle charging system of the above embodiment.

[0063] According to the electric vehicle of the present application, the above-mentioned electric vehicle charging system solves the problems of complex system control, large number of devices and high cost in the related technology, realizes the switching of the high-voltage platform and the low-voltage platform of the charging system, simplifies the switching electrical architecture of the charging system, and can use the low-voltage architecture of the existing electric drive system, thereby reducing the cost of the whole vehicle.

[0064] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms are not necessarily directed to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or N embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0065] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, "N" means at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0066] It should be understood that the various parts of the present application can be implemented by hardware, software, firmware or a combination thereof. In the above-mentioned embodiment, the N steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented by hardware, as in another embodiment, it can be implemented by any one of the following technologies known in the art or their combination: a discrete logic circuit having a logic gate circuit for implementing a logic function for a data signal, a dedicated integrated circuit having a suitable combination of logic gate circuits, a programmable gate array, a field programmable gate array, etc.

[0067] A person skilled in the art may understand that all or part of the steps in the above-mentioned embodiment method may be completed by instructing related hardware through a program, and the program may be stored in a computer-readable storage medium, which, when executed, includes one or a combination of the steps of the method embodiment.

[0068] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. An electric vehicle charging system, characterized in that: include: A control component, the control component is used to identify the current working mode of the vehicle, wherein the working mode includes a first fast charging mode, a second fast charging mode and a discharging mode; a switch component, the switch component being connected to the control component, the switch component being in a first switch state when the current vehicle is in the first fast charging mode, the switch component being in a second switch state when the current vehicle is in the second fast charging mode, and the switch component being in a third switch state when the current vehicle is in the discharge mode; and An energy storage component, wherein the energy storage component is connected to the charging end, the load end and the electric drive system respectively, and the energy storage component includes a first power supply component and a second power supply component, wherein: When the switch component is in the first switch state, the first power supply and the second power supply are connected in series, and while the first power supply and the second power supply are charged through the charging end, the first power supply and the second power supply supply supply power the load through the load end; when the switch component is in the second switch state, the first power supply and the second power supply are connected in parallel, and while the first power supply and the second power supply are charged through the charging end, the first power supply and the second power supply supply supply power the load through the load end; when the switch component is in the third switch state, the first power supply and the second power supply are connected in parallel, and the first power supply and the second power supply supply supply power the load through the load end and power the electric drive system at the same time.

2. The electric vehicle charging system according to claim 1, characterized in that: The switch assembly comprises: a first switch, wherein a first end of the first switch is connected to a negative electrode of the first power supply component, a second end of the first switch component is connected to a positive electrode of the second power supply component, a third end of the first switch is connected to a fifth end of the first switch, a fourth end of the first switch is respectively connected to a negative electrode of the second power supply component, a negative electrode of the charging terminal, a negative electrode of the load terminal, and a negative electrode of the electric drive system, and a sixth end of the first switch is respectively connected to a positive electrode of the first power supply component and a positive electrode of the charging terminal; a second switch, one end of which is connected to the sixth end of the first switch and the positive electrode of the first power supply, and the other end of which is connected to the positive electrode of the charging end; a third switch, one end of the third switch being respectively connected to the other end of the second switch, the positive electrode of the charging end and the positive electrode of the load end, and the other end of the third switch being connected to the positive electrode of the electric drive system; A fourth switch, one end of the fourth switch is respectively connected to the fourth end of the first switch and the negative electrode of the second power supply, and the other end of the fourth switch is respectively connected to the negative electrode of the charging end, the negative electrode of the load end and the negative electrode of the electric drive system.

3. The electric vehicle charging system according to claim 2, characterized in that: The first switch is a double-pole double-throw relay.

4. The electric vehicle charging system according to claim 2, characterized in that: The switch assembly further comprises: a first resistor, one end of the first resistor being connected to one end of the second switch; A fifth switch, one end of the fifth switch is connected to the other end of the first resistor, and the other end of the fifth switch is connected to the other end of the second switch.

5. The electric vehicle charging system according to claim 4, characterized in that: The second switch to the fifth switch are all relays.

6. The electric vehicle charging system according to claim 1, characterized in that: The control component comprises: A control unit, the control unit is connected to the switch assembly, and the control unit is used to control the switch assembly to be in a corresponding switch state according to the current working mode of the vehicle; A charging identification unit, the charging identification unit is connected to the control unit, and when the current vehicle interacts with the charging pile, the charging identification unit is used to identify the charging type of the current vehicle and determine the working mode of the current vehicle according to the charging type; A drive identification unit is connected to the control unit, and is used to determine whether the current vehicle is in the discharge mode based on the state of the electric drive system of the current vehicle.

7. The electric vehicle charging system according to claim 1, characterized in that: The first power supply component and the second power supply component are both power battery packs.

8. The electric vehicle charging system according to claim 1, characterized in that: Also includes: A display component is connected to the control component, and the display component is used to display the current operating mode of the vehicle.

9. The electric vehicle charging system according to claim 1, characterized in that: Also includes: A reminder component is connected to the control component, and the reminder component is used to perform acoustic reminders and / or optical reminders according to the current working mode of the vehicle.

10. An electric vehicle, characterized in that: include: An electric vehicle charging system as claimed in any one of claims 1 to 9.

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