Charging system and method and apparatus for determining a state of charge thereof

Abstract

The application provides a charging system and a charging state determination method and device thereof, the charging state determination method comprises the following steps: obtaining a current charging state of the charging system; obtaining a voltage value of a control guide signal in the charging system; and determining a next charging state of the charging system according to the current charging state of the charging system and the voltage value. The application can reasonably determine the charging state and ensure normal charging of the charging system.

Description

Technical Field

[0001] This invention relates to the field of electric vehicle charging technology, and specifically to a method for determining the charging status of a charging system, a device for determining the charging status of a charging system, and a charging system. Background Technology

[0002] In a charging system for electric vehicles, the charging status can be determined based on the CP (Control Guidance) signal. For example, in a certain charging standard, the correspondence between the voltage value of the CP signal and the charging status is defined, as shown in Table 1.

[0003] Table 1

[0004]

[0005] In Table 1, Ax, Bx, and Cx represent the charging states: no charging gun inserted, charging inserted but not allowed, and charging allowed, respectively. Each of these three charging states includes two sub-states, where x can be 1 or 2. Each of the three charging states has a corresponding CP signal voltage range. In each sub-state, the switching state (PWM state) of the power supply equipment in the charging pile, whether the electric vehicle is connected to the power supply equipment, whether the electric vehicle is ready to receive energy, and whether the power supply equipment is ready to supply energy all have corresponding state results.

[0006] As can be seen from Table 1, there are still undefined CP signal voltage ranges in this charging standard. When the CP signal voltage value is in the range between two defined states, such as 7-8V and 10-11V, there may be misjudgments of the charging status, which may lead to charging stopping or failure. Summary of the Invention

[0007] To solve the above-mentioned technical problems, the present invention provides a charging system and a method and apparatus for determining the charging state, which can reasonably determine the charging state and ensure that the charging system charges normally.

[0008] The technical solution adopted in this invention is as follows:

[0009] A method for determining the charging state of a charging system includes the following steps: acquiring the current charging state of the charging system; acquiring the voltage value of a control guidance signal in the charging system; and determining the next charging state of the charging system based on the current charging state and the voltage value.

[0010] The charging states include: no charging gun inserted, charging gun inserted but not allowed, and charging allowed.

[0011] Determining the next charging state of the charging system based on the current charging state and the voltage value specifically includes: determining whether the voltage value falls within the range of an unplugged charging state, a first intermediate state, a plugged-in but not allowed charging state, a second intermediate state, or a allowed charging state. The voltage value ranges for the allowed charging state, the second intermediate state, the plugged-in but not allowed charging state, the first intermediate state, and the unplugged charging state are [a, b], (b, c), [c, d], (d, e), and [e, f], respectively, where a, b, c, d, e, and f increase sequentially. If the voltage value falls within the unplugged charging state, the next charging state of the charging system is determined to be the unplugged charging state. If the voltage value falls within the plugged-in but not allowed charging state, the next charging state of the charging system is determined to be the plugged-in but not allowed charging state. If the voltage value falls within the allowed charging state, the next charging state of the charging system is determined to be the allowed charging state. The state is the allowed charging state; if the voltage value is in the first intermediate state region and the current charging state of the charging system is the allowed charging state, then the next charging state of the charging system is determined to be the unplugged state; if the voltage value is in the second intermediate state region and the current charging state of the charging system is the unplugged state, then the next charging state of the charging system is determined to be the plugged-in but not allowed charging state; if the voltage value is in the first intermediate state region and the current charging state of the charging system is the unplugged state or the plugged-in but not allowed charging state, or if the voltage value is in the second intermediate state region and the current charging state of the charging system is the plugged-in but not allowed charging state or the allowed charging state, then the duration for which the voltage value is in the first intermediate state region or the second intermediate state region is timed, and the next charging state of the charging system is determined based on the timing result and the current charging state of the charging system.

[0012] The next charging state of the charging system is determined based on the timing results and the current charging state of the charging system. Specifically, this includes: when the current charging state of the charging system is the "no charging gun inserted" state, if the duration of the voltage value in the first intermediate state zone does not exceed the timeout, then the next charging state of the charging system is determined to be the "no charging gun inserted" state; if the duration of the voltage value in the first intermediate state zone exceeds the timeout, then the next charging state of the charging system is determined to be the "charging gun inserted but not allowed" state; when the current charging state of the charging system is the "charging gun inserted but not allowed" state, if the duration of the voltage value in the first intermediate state zone does not exceed the timeout, then the next charging state of the charging system is determined to be the "charging gun inserted but not allowed" state; if the voltage value in the first intermediate state zone exceeds the timeout, then the next charging state of the charging system is determined to be the "charging gun inserted but not allowed" state. If the duration of the voltage value in the second intermediate state zone exceeds the timeout, the next charging state of the charging system is determined to be the "no plug-in" state. If the duration of the voltage value in the second intermediate state zone exceeds the timeout, the next charging state of the charging system is determined to be the "plug-in but not allowed charging" state. If the duration of the voltage value in the second intermediate state zone exceeds the timeout, the next charging state of the charging system is determined to be the "allowed charging" state. When the current charging state of the charging system is the "allowed charging" state, if the duration of the voltage value in the second intermediate state zone does not exceed the timeout, the next charging state of the charging system is determined to be the "allowed charging" state. If the duration of the voltage value in the second intermediate state zone exceeds the timeout, the next charging state of the charging system is determined to be the "plug-in but not allowed charging" state.

[0013] A charging state determination device for a charging system includes: a first acquisition module for acquiring the current charging state of the charging system; a second acquisition module for acquiring the voltage value of a control guidance signal in the charging system; and a determination module for determining the next charging state of the charging system based on the current charging state and the voltage value.

[0014] The charging states include: no charging gun inserted, charging gun inserted but not allowed, and charging allowed.

[0015] The determining module is specifically used to: determine whether the voltage value falls within the range of an unplugged charging state, a first intermediate state, a plugged-in but not allowed charging state, a second intermediate state, or a allowed charging state, wherein the voltage value ranges of the allowed charging state, the second intermediate state, the plugged-in but not allowed charging state, the first intermediate state, and the unplugged charging state are [a, b], (b, c), [c, d], (d, e), and [e, f], respectively, where a, b, c, d, e, and f increase sequentially; if the voltage value falls within the range of an unplugged charging state, then the next charging state of the charging system is determined to be the unplugged charging state; if the voltage value falls within the range of a plugged-in but not allowed charging state, then the next charging state of the charging system is determined to be the plugged-in but not allowed charging state; if the voltage value falls within the range of a allowed charging state, then the next charging state of the charging system is determined to be the allowed charging state; if the voltage value falls within the range of a plugged-in but not ... If the voltage value falls within the first intermediate state region and the current charging state of the charging system is the allowed charging state, then the next charging state of the charging system is determined to be the unplugged state. If the voltage value falls within the second intermediate state region and the current charging state of the charging system is the unplugged state, then the next charging state of the charging system is determined to be the plugged-in but not allowed charging state. If the voltage value falls within the first intermediate state region and the current charging state of the charging system is either the unplugged state or the plugged-in but not allowed charging state, or if the voltage value falls within the second intermediate state region and the current charging state of the charging system is either the plugged-in but not allowed charging state or the allowed charging state, then the duration for which the voltage value is in the first or second intermediate state region is timed, and the next charging state of the charging system is determined based on the timing result and the current charging state of the charging system.

[0016] The determining module is specifically used for: when the current charging state of the charging system is the "no charging gun inserted" state, if the duration of the voltage value being in the first intermediate state zone does not exceed the timeout, then determining the next charging state of the charging system as the "no charging gun inserted" state; if the duration of the voltage value being in the first intermediate state zone exceeds the timeout, then determining the next charging state of the charging system as the "charging gun inserted but not allowed" state; when the current charging state of the charging system is the "charging gun inserted but not allowed" state, if the duration of the voltage value being in the first intermediate state zone does not exceed the timeout, then determining the next charging state of the charging system as the "charging gun inserted but not allowed" state; if the duration of the voltage value being in the first intermediate state zone exceeds the timeout, then determining the next charging state of the charging system as the "charging gun inserted but not allowed" state. The next charging state of the system is the unplugged state. If the voltage value remains in the second intermediate state region for no longer than the specified duration, the next charging state of the charging system is determined to be the plugged-in but not allowed charging state. If the voltage value remains in the second intermediate state region for a longer period than the specified duration, the next charging state of the charging system is determined to be the allowed charging state. When the current charging state of the charging system is the allowed charging state, if the voltage value remains in the second intermediate state region for no longer than the specified duration, the next charging state of the charging system is determined to be the allowed charging state. If the voltage value remains in the second intermediate state region for a longer period than the specified duration, the next charging state of the charging system is determined to be the plugged-in but not allowed charging state.

[0017] A charging system includes a charging status determination device for the aforementioned charging system.

[0018] The beneficial effects of this invention are:

[0019] This invention determines the next charging state of the charging system based on the current charging state and the voltage value of the control guidance signal in the charging system. Even when the voltage value is in an undefined range, the charging state can be reasonably determined, ensuring the normal charging operation of the charging system. Attached Figure Description

[0020] Figure 1 This is a flowchart of a method for determining the charging state of a charging system according to an embodiment of the present invention;

[0021] Figure 2 A state diagram of the charging state transition strategy of a charging system according to a specific embodiment of the present invention;

[0022] Figure 3 This is a block diagram of a charging status determination device for a charging system according to an embodiment of the present invention. Detailed Implementation

[0023] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] like Figure 1 As shown, the charging state determination method of the charging system in this embodiment of the invention includes the following steps:

[0025] S1, obtain the current charging status of the charging system.

[0026] S2, acquire the voltage value of the control guidance signal in the charging system.

[0027] S3 determines the next charging state of the charging system based on the current charging state and voltage value of the charging system.

[0028] In one embodiment of the present invention, the charging state of the charging system includes an unplugged state, a plugged-in but not allowed charging state, and a allowed charging state.

[0029] After obtaining the current charging status of the charging system and the voltage value of the control guidance signal in the charging system, it can first be determined whether the voltage value is in the range of the no-gun state, the first intermediate state, the gun-inserted but not allowed charging state, the second intermediate state, or the allowed charging state. The voltage value ranges of the allowed charging state, the second intermediate state, the gun-inserted but not allowed charging state, the first intermediate state, and the no-gun state are [a, b], (b, c), [c, d], (d, e), and [e, f], respectively, where a, b, c, d, e, and f increase sequentially. If the voltage value falls within the range of the "no charging gun" state, the next charging state of the charging system is determined to be the "no charging gun" state; if the voltage value falls within the range of the "charging gun inserted but not allowed" state, the next charging state of the charging system is determined to be the "charging gun inserted but not allowed" state; if the voltage value falls within the range of the "allowed charging" state, the next charging state of the charging system is determined to be the "allowed charging" state; if the voltage value falls within the range of the "second intermediate state" state, and... If the current charging state of the charging system is "no charging gun inserted", then the next charging state of the charging system is determined to be "charging gun inserted but not allowed". If the voltage value is in the first intermediate state zone and the current charging state of the charging system is "no charging gun inserted or charging gun inserted but not allowed", or if the voltage value is in the second intermediate state zone and the current charging state of the charging system is "charging gun inserted but not allowed" or "charging allowed", then the duration of the voltage value in the first intermediate state zone or the second intermediate state zone is timed, and the next charging state of the charging system is determined based on the timing result and the current charging state of the charging system.

[0030] Specifically, when the current charging state of the charging system is "unplugged," if the voltage value remains in the first intermediate state zone for no timeout, the next charging state of the charging system is determined to be "unplugged." If the voltage value remains in the first intermediate state zone for no timeout, the next charging state of the charging system is determined to be "plugged in but not allowed to charge." Similarly, when the current charging state of the charging system is "plugged in but not allowed to charge," if the voltage value remains in the first intermediate state zone for no timeout, the next charging state of the charging system is determined to be "plugged in but not allowed to charge." If the voltage value remains in the first intermediate state zone for no timeout, the next charging state of the charging system is determined to be "plugged in but not allowed to charge." If a charging state is "unplugged" and the voltage value remains in the second intermediate state zone for a period of time without timeout, the next charging state of the charging system is determined to be "plugged but not allowed to charge". If the voltage value remains in the second intermediate state zone for a period of timeout, the next charging state of the charging system is determined to be "allowed to charge". If the current charging state of the charging system is "allowed to charge", and the voltage value remains in the second intermediate state zone for a period of time without timeout, the next charging state of the charging system is determined to be "allowed to charge". If the voltage value remains in the second intermediate state zone for a period of timeout, the next charging state of the charging system is determined to be "plugged but not allowed to charge".

[0031] The duration timeout refers to the timer's timing exceeding a preset time, the specific value of which can be set according to actual conditions. If the voltage value exits the first or second intermediate state zone during the timing process, the timer's timing will be reset to zero.

[0032] To illustrate the charging state determination method of the charging system in this embodiment of the invention in more detail, taking the states defined in Table 1 as an example, Ax represents the state where the charging gun is not inserted, Bx represents the state where the charging gun is inserted but charging is not allowed, and Cx represents the state where charging is allowed. The voltage value ranges corresponding to the three are [11, 13], [8, 10], and [5, 7], respectively. These three ranges are respectively called the state where the charging gun is not inserted, the state where the charging gun is inserted but charging is not allowed, and the state where charging is allowed. The voltage value ranges with no corresponding charging state are (10, 11) and (7, 8), which are respectively called the first intermediate state range and the second intermediate state range.

[0033] When the current charging state of the charging system is Ax, the strategy for determining the next charging state of the charging system can be referred to... Figure 2 And Table 2.

[0034] Table 2

[0035]

[0036]

[0037] When the current charging state of the charging system is Bx, the strategy for determining the next charging state of the charging system can be referred to... Figure 2 And Table 3.

[0038] Table 3

[0039]

[0040]

[0041]

[0042] When the current charging state of the charging system is Cx, the strategy for determining the next charging state of the charging system can be referred to... Figure 2 And Table 4.

[0043] Table 4

[0044]

[0045]

[0046] Figure 2 Other states refer to states other than Ax, Bx, and Cx, such as sudden power outages or faults during charging. The voltage range corresponding to these other states is outside of [5, 13].

[0047] The charging state determination method of the charging system according to the embodiments of the present invention determines the next charging state of the charging system based on the current charging state of the charging system and the voltage value of the control guidance signal in the charging system. Even when the voltage value is in an undefined range, the charging state can be reasonably determined to ensure the normal charging operation of the charging system.

[0048] In accordance with the charging state determination method of the charging system in the above embodiments, the present invention also proposes a charging state determination device for a charging system.

[0049] like Figure 3 As shown, the charging state determination device of the charging system in this embodiment of the invention includes a first acquisition module 10, a second acquisition module 20, and a determination module 30. The first acquisition module 10 is used to acquire the current charging state of the charging system; the second acquisition module 20 is used to acquire the voltage value of the control guidance signal in the charging system; and the determination module 30 is used to determine the next charging state of the charging system based on the current charging state and the voltage value.

[0050] In one embodiment of the present invention, the charging state of the charging system includes an unplugged state, a plugged-in but not allowed charging state, and a allowed charging state.

[0051] The determining module 30 is specifically used to: determine whether the voltage value falls within the following ranges: an unplugged charging state, a first intermediate state, a plugged-in but not allowed charging state, a second intermediate state, or a allowed charging state. The voltage value ranges for the allowed charging state, the second intermediate state, the plugged-in but not allowed charging state, the first intermediate state, and the unplugged charging state are [a, b], (b, c), [c, d], (d, e), and [e, f], respectively, where a, b, c, d, e, and f increase sequentially. If the voltage value falls within the unplugged charging state, the next charging state of the charging system is determined to be the unplugged charging state. If the voltage value falls within the plugged-in but not allowed charging state, the next charging state of the charging system is determined to be the plugged-in but not allowed charging state. If the voltage value falls within the allowed charging state, the next charging state of the charging system is determined to be the allowed charging state. Charging state; if the voltage value is in the first intermediate state zone and the current charging state of the charging system is the allowed charging state, then the next charging state of the charging system is determined to be the unplugged state; if the voltage value is in the second intermediate state zone and the current charging state of the charging system is the unplugged state, then the next charging state of the charging system is determined to be the plugged-in but not allowed charging state; if the voltage value is in the first intermediate state zone and the current charging state of the charging system is the unplugged state or the plugged-in but not allowed charging state, or if the voltage value is in the second intermediate state zone and the current charging state of the charging system is the plugged-in but not allowed charging state or the allowed charging state, then the duration of the voltage value being in the first intermediate state zone or the second intermediate state zone is timed, and the next charging state of the charging system is determined based on the timing result and the current charging state of the charging system.

[0052] Furthermore, the determining module is specifically used for: when the current charging state of the charging system is the unplugged state, if the duration of the voltage value in the first intermediate state zone does not exceed the timeout, then determining the next charging state of the charging system is the unplugged state; if the duration of the voltage value in the first intermediate state zone exceeds the timeout, then determining the next charging state of the charging system is the plugged-in but not allowed charging state; when the current charging state of the charging system is the plugged-in but not allowed charging state, if the duration of the voltage value in the first intermediate state zone does not exceed the timeout, then determining the next charging state of the charging system is the plugged-in but not allowed charging state; if the duration of the voltage value in the first intermediate state zone exceeds the timeout, then determining the charging... The next charging state of the charging system is the unplugged state. If the voltage value is in the second intermediate state zone for a period of time that does not exceed the time limit, the next charging state of the charging system is determined to be the plugged-in but not allowed charging state. If the voltage value is in the second intermediate state zone for a period of time that exceeds the time limit, the next charging state of the charging system is determined to be the allowed charging state. When the current charging state of the charging system is the allowed charging state, if the voltage value is in the second intermediate state zone for a period of time that does not exceed the time limit, the next charging state of the charging system is determined to be the allowed charging state. If the voltage value is in the second intermediate state zone for a period of time that exceeds the time limit, the next charging state of the charging system is determined to be the plugged-in but not allowed charging state.

[0053] The duration timeout refers to the timer's timing exceeding a preset time, the specific value of which can be set according to actual conditions. If the voltage value exits the first or second intermediate state zone during the timing process, the timer's timing will be reset to zero.

[0054] According to the charging state determination device of the charging system according to the present invention, the next charging state of the charging system is determined based on the current charging state of the charging system and the voltage value of the control guidance signal in the charging system. Even when the voltage value is in the range of undefined corresponding state, the charging state can be reasonably determined to ensure the normal charging operation of the charging system.

[0055] Based on the charging state determination device of the charging system in the above embodiments, the present invention also proposes a charging system.

[0056] The charging system of this invention includes the charging state determination device of any of the above embodiments. The specific implementation of the device can be referred to the above embodiments, and will not be repeated here.

[0057] According to the charging system of the present invention, even when the voltage value is in an undefined range, the charging state can be reasonably determined, thereby ensuring normal charging operation.

[0058] The execution order of the steps shown in the flowchart is the preferred implementation. In other embodiments of the present invention, the order can be adjusted according to the functions involved in each step, for example, they can be executed simultaneously or in the reverse order.

[0059] The logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as a sequential list of executable instructions for implementing logical functions, and can be embodied in any computer-readable medium for use by, or in connection with, an instruction execution system, apparatus, or device. For the purposes of this specification, "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transmit a program for use by, or in connection with, an instruction execution system, apparatus, or device.

[0060] Those skilled in the art will understand that all or part of the steps of the methods in the above embodiments can be implemented by a program instructing related hardware. The program can be stored in a computer-readable storage medium, and when executed, the program includes one or a combination of the steps of the method embodiments.

[0061] Furthermore, the functional units in the various embodiments of the present invention can be integrated into a processing module, or each unit can exist physically separately, or two or more units can be integrated into a module. The integrated module can be implemented in hardware or as a software functional module. If the integrated module is implemented as a software functional module and sold or used as an independent product, it can also be stored in a computer-readable storage medium.

Claims

1. A method for determining the charging state of a charging system, characterized in that, Includes the following steps: Obtain the current charging status of the charging system; Obtain the voltage value of the control guidance signal in the charging system; The next charging state of the charging system is determined based on the current charging state and the voltage value. The charging states include: no charging gun inserted, charging gun inserted but not allowed, and charging allowed. Determining the next charging state of the charging system based on the current charging state and the voltage value specifically includes: The range of the voltage value is determined to be the unplugged state area, the first intermediate state area, the plugged-in but not allowed charging state area, the second intermediate state area, or the allowed charging state area. The voltage value ranges of the allowed charging state area, the second intermediate state area, the plugged-in but not allowed charging state area, the first intermediate state area, and the unplugged state area are [a, b], (b, c), [c, d], (d, e), and [e, f], respectively, where a, b, c, d, e, and f increase sequentially. If the voltage value falls within the range of the unplugged state, then the next charging state of the charging system is determined to be the unplugged state. If the voltage value falls within the range of the inserted charging gun but not allowed charging state, then the next charging state of the charging system is determined to be the inserted charging gun but not allowed charging state. If the voltage value falls within the range of the allowed charging state, then the next charging state of the charging system is determined to be the allowed charging state. If the voltage value is in the first intermediate state region and the current charging state of the charging system is the allowed charging state, then the next charging state of the charging system is determined to be the unplugged state. If the voltage value is in the second intermediate state zone and the current charging state of the charging system is the unplugged state, then the next charging state of the charging system is determined to be the plugged-in but not allowed charging state. If the voltage value falls within the first intermediate state region, and the current charging state of the charging system is either the unplugged state or the plugged-in but not allowed state, or if the voltage value falls within the second intermediate state region, and the current charging state of the charging system is either the plugged-in but not allowed state or the allowed state, then the duration for which the voltage value is in the first intermediate state region or the second intermediate state region is timed, and the next charging state of the charging system is determined based on the timing result and the current charging state of the charging system.

2. The method for determining the charging state of a charging system according to claim 1, characterized in that, The next charging state of the charging system is determined based on the timing results and the current charging state of the charging system, specifically including: When the current charging state of the charging system is the unplugged state, if the duration of the voltage value in the first intermediate state zone does not exceed the time limit, the next charging state of the charging system is determined to be the unplugged state; if the duration of the voltage value in the first intermediate state zone exceeds the time limit, the next charging state of the charging system is determined to be the plugged-in but not allowed charging state. When the current charging state of the charging system is the "plugged in but not allowed to charge" state, if the duration of the voltage value in the first intermediate state zone does not exceed the time limit, the next charging state of the charging system is determined to be the "plugged in but not allowed to charge" state. If the duration of the voltage value in the first intermediate state zone exceeds the time limit, the next charging state of the charging system is determined to be the "not plugged in" state. If the duration of the voltage value in the second intermediate state zone does not exceed the time limit, the next charging state of the charging system is determined to be the "plugged in but not allowed to charge" state. If the duration of the voltage value in the second intermediate state zone exceeds the time limit, the next charging state of the charging system is determined to be the "allowed to charge" state. When the current charging state of the charging system is the allowed charging state, if the duration of the voltage value being in the second intermediate state zone does not exceed the time limit, then the next charging state of the charging system is determined to be the allowed charging state; if the duration of the voltage value being in the second intermediate state zone exceeds the time limit, then the next charging state of the charging system is determined to be the plugged-in but not allowed charging state.

3. A charging state determination device for a charging system, characterized in that, include: A first acquisition module is used to acquire the current charging status of the charging system. The second acquisition module is used to acquire the voltage value of the control guidance signal in the charging system; The determining module is used to determine the next charging state of the charging system based on the current charging state and the voltage value. The charging state includes an unplugged state, a plugged-in but not allowed charging state, and a allowed charging state. The determining module is specifically used for: The range of the voltage value is determined to be the unplugged state area, the first intermediate state area, the plugged-in but not allowed charging state area, the second intermediate state area, or the allowed charging state area. The voltage value ranges of the allowed charging state area, the second intermediate state area, the plugged-in but not allowed charging state area, the first intermediate state area, and the unplugged state area are [a, b], (b, c), [c, d], (d, e), and [e, f], respectively, where a, b, c, d, e, and f increase sequentially. If the voltage value falls within the range of the unplugged state, then the next charging state of the charging system is determined to be the unplugged state. If the voltage value falls within the range of the inserted charging gun but not allowed charging state, then the next charging state of the charging system is determined to be the inserted charging gun but not allowed charging state. If the voltage value falls within the range of the allowed charging state, then the next charging state of the charging system is determined to be the allowed charging state. If the voltage value is in the first intermediate state zone and the current charging state of the charging system is the allowed charging state, then the next charging state of the charging system is determined to be the unplugged state. If the voltage value is in the second intermediate state zone and the current charging state of the charging system is the unplugged state, then the next charging state of the charging system is determined to be the plugged-in but not allowed charging state. If the voltage value falls within the first intermediate state region, and the current charging state of the charging system is either the unplugged state or the plugged-in but not allowed state, or if the voltage value falls within the second intermediate state region, and the current charging state of the charging system is either the plugged-in but not allowed state or the allowed state, then the duration for which the voltage value is in the first intermediate state region or the second intermediate state region is timed, and the next charging state of the charging system is determined based on the timing result and the current charging state of the charging system.

4. The charging status determination device for a charging system according to claim 3, characterized in that, The determining module is specifically used for: When the current charging state of the charging system is the unplugged state, if the duration of the voltage value in the first intermediate state zone does not exceed the time limit, the next charging state of the charging system is determined to be the unplugged state; if the duration of the voltage value in the first intermediate state zone exceeds the time limit, the next charging state of the charging system is determined to be the plugged-in but not allowed charging state. When the current charging state of the charging system is the "plugged in but not allowed to charge" state, if the duration of the voltage value in the first intermediate state zone does not exceed the time limit, the next charging state of the charging system is determined to be the "plugged in but not allowed to charge" state. If the duration of the voltage value in the first intermediate state zone exceeds the time limit, the next charging state of the charging system is determined to be the "not plugged in" state. If the duration of the voltage value in the second intermediate state zone does not exceed the time limit, the next charging state of the charging system is determined to be the "plugged in but not allowed to charge" state. If the duration of the voltage value in the second intermediate state zone exceeds the time limit, the next charging state of the charging system is determined to be the "allowed to charge" state. When the current charging state of the charging system is the allowed charging state, if the duration of the voltage value being in the second intermediate state zone does not exceed the time limit, then the next charging state of the charging system is determined to be the allowed charging state; if the duration of the voltage value being in the second intermediate state zone exceeds the time limit, then the next charging state of the charging system is determined to be the plugged-in but not allowed charging state.

5. A charging system, characterized in that, Includes a charging status determination device for a charging system according to claim 3 or 4.

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