Vehicle-mounted photovoltaic system, boosting device and electric vehicle thereof

Abstract

The invention discloses a vehicle-mounted photovoltaic system, boosting equipment and an electric vehicle thereof. Relates to the field of vehicle-mounted photovoltaics, and discloses a vehicle-mounted photovoltaic system which comprises a boosting unit and an MPPT controller, the boosting unit is connected with the MPPT controller, the MPPT controller detects the current electric quantity of an energy storage battery and sends a wake-up signal to the boosting unit when the current electric quantity reaches the preset charging electric quantity, and the boosting unit enters a wake-up state when receiving the wake-up signal, the boosting unit detects the charging parameters in the awakening state and enters a boosting activation state when the charging parameters meet a preset boosting condition, and the boosting unit receives the charging parameters in the boosting activation state and enters a standby state when the charging parameters do not meet the preset charging condition. Compared with the prior art, the charging parameter is detected through the boost unit, and the standby state is entered when the preset charging condition is not met, so that unnecessary boost activation is reduced, and the energy loss of the system is reduced.

Description

Technical Field

[0001] The present application relates to the field of vehicle-mounted photovoltaic technology, and in particular to a vehicle-mounted photovoltaic system, a boosting device and an electric vehicle thereof. Background Art

[0002] At present, the whole vehicle may be powered on and off, plug in a charging gun, plug in a discharge gun, etc. at any time. The charging system also has reservation settings and system operation center (SOC) limit settings, etc. The interaction between the vehicle control system (VCU), battery management system (BMS), vehicle central control screen, or remote control (Tbox), on-board AC and DC system (OBC) has become very complicated. When the on-board photovoltaic system is connected to the whole vehicle, the wake-up, sleep, boost activation and exit status of the on-board photovoltaic system, the wake-up and sleep between multiple system hardware and software, and the coordination relationship logic of the upper and lower high voltages are complex, resulting in excessive dependence and information interaction with the whole vehicle.

[0003] However, the prior art has unreasonable or undisclosed aspects in the wake-up and sleep and boost activation and exit control of the boost (DCDC), and the boost unit being in the boost activation state for a long time will increase the control of the boost power components (for example, MOS tubes), thereby increasing the system energy loss.

[0004] The above contents are only used to assist in understanding the technical solution of the present application and do not constitute an admission that the above contents are prior art. Summary of the invention

[0005] The main purpose of the present application is to provide a vehicle-mounted photovoltaic system, a boost device and an electric vehicle thereof, aiming to solve the technical problem in the prior art that the boost unit is in a boost activation state for a long time, which increases the energy loss of the system.

[0006] To achieve the above-mentioned purpose, the present application proposes a vehicle-mounted photovoltaic system, which includes: a boost unit and an MPPT controller;

[0007] The working states of the boost unit include: awake state, standby state and boost activation state;

[0008] The boost unit is connected to the power battery and the MPPT controller respectively, and the MPPT controller is connected to the energy storage battery and the solar panel;

[0009] The MPPT controller is used to detect the current power of the energy storage battery and send a wake-up signal to the boost unit when the current power reaches a preset charging power;

[0010] The boost unit is used to enter a wake-up state upon receiving a wake-up signal;

[0011] The boost unit is further used to detect charging parameters in the awake state, and enter a boost activation state when the charging parameters meet a preset boost condition;

[0012] The boost unit is further configured to receive charging parameters in a boost activation state, and enter a standby state when the charging parameters do not meet a preset charging condition.

[0013] Preferably, the charging parameters include: vehicle state parameters and current electrical parameters of the power battery;

[0014] The vehicle-mounted photovoltaic system also includes: a vehicle controller and a battery management system;

[0015] The vehicle controller is connected to the battery management system and the boost unit respectively, and the battery management system is also connected to the boost circuit;

[0016] The vehicle controller is used to detect the vehicle running state and output corresponding vehicle state parameters to the boost unit;

[0017] The battery management system is used to detect the current electrical parameters of the power battery and output them to the boost unit.

[0018] Preferably, the boost unit is further configured to maintain a sleep state when no wake-up signal is received.

[0019] Preferably, the boost unit is further configured to execute a self-check process when receiving a wake-up signal;

[0020] The boost unit is also used to enter a wake-up state after completing the self-check process.

[0021] Preferably, the MPPT controller is also used to detect the current power of the energy storage battery and output it to the boost unit;

[0022] The boost unit is further configured to determine whether the current power of the energy storage battery meets a preset standby condition when receiving the current power of the energy storage battery;

[0023] The boost unit is further configured to enter a short standby state when the current power level of the energy storage battery meets a preset standby condition;

[0024] The boost unit is also used to enter a long standby state when the current power level of the energy storage battery does not meet a preset standby condition.

[0025] Preferably, the boost unit is further used to start counting the standby time when entering the standby state;

[0026] The boost unit is further configured to enter a wake-up state when the standby time in the short standby state exceeds a first time;

[0027] The boost unit is further configured to enter a wake-up state when the standby time in the long standby state exceeds a second time.

[0028] Preferably, the MPPT controller is used to send a first fault signal to the boost unit when a fault in the energy storage battery is detected;

[0029] The boost unit is used to enter a sleep state when receiving a first fault signal.

[0030] Preferably, the battery management system is used to send a second fault signal to the boost unit when a fault of the power battery is detected;

[0031] The boost unit is used to enter a standby state when receiving a second fault signal.

[0032] In addition, to achieve the above-mentioned purpose, the present application also proposes a boosting device, which includes the vehicle-mounted photovoltaic system as described above.

[0033] In addition, to achieve the above objectives, the present application also proposes an electric vehicle, which includes the on-board photovoltaic system as described above.

[0034] One or more technical solutions proposed in this application have at least the following effects:

[0035] The present application proposes a vehicle-mounted photovoltaic system, a boost device and an electric vehicle thereof, the vehicle-mounted photovoltaic system includes: a boost unit and an MPPT controller, the working state of the boost unit includes: a wake-up state, a standby state and a boost activation state, the boost unit is connected to a power battery and the MPPT controller respectively, the MPPT controller is connected to an energy storage battery and a solar panel, the MPPT controller is used to detect the current power of the energy storage battery, and when the current power reaches a preset charging power, sends a wake-up signal to the boost unit, the boost unit is used to enter the wake-up state when receiving the wake-up signal, the boost unit is also used to detect charging parameters in the wake-up state, and enter the boost activation state when the charging parameters meet the preset boost conditions, the boost unit is also used to receive charging parameters in the boost activation state, and enter the standby state when the charging parameters do not meet the preset charging conditions. Compared with the prior art, the boost unit detects the charging parameters and enters the standby state when the preset charging conditions are not met, thereby reducing unnecessary boost activation, thereby reducing the control of boost power components (for example: MOS tube), thereby reducing system energy loss. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0037] Figure 1 This is the control state flow chart of the DCDC boost unit of this application;

[0038] Figure 2 A schematic diagram of the structure of a first embodiment of a vehicle-mounted photovoltaic system proposed in an embodiment of the present application;

[0039] Figure 3 This is a schematic structural diagram of a second embodiment of a vehicle-mounted photovoltaic system proposed in an embodiment of the present application.

[0040] Description of Figure Numbers:

[0041] Label name Label name 1 Boost unit 2 MPPT Controller 3 Vehicle Controller 4 Battery Management System

[0042] The purpose, features and advantages of this application will be further described in conjunction with the embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0043] It should be understood that the specific embodiments described herein are only used to explain the technical solutions of the present application and are not used to limit the present application.

[0044] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0045] It should be noted that all directional indications in the embodiments of the present application (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0046] In addition, the descriptions of "first", "second", etc. in this application are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0047] The main solution of the embodiment of the present application is: the boost unit 1 detects charging parameters and enters the standby state when the preset charging conditions are not met, thereby reducing unnecessary boost activation.

[0048] Because the prior art has unreasonable or undisclosed aspects in the wake-up and sleep and boost activation and exit control of the boost (DCDC), and the boost unit 1 is in the boost activation state for a long time, it will increase the boost power component control (for example: MOS tube), thereby increasing the system energy loss.

[0049] The present application provides a solution, which detects the current power of the energy storage battery through the MPPT controller 2, and sends a wake-up signal to the boost unit 1 when the current power reaches the preset charging power. The boost unit 1 enters the awake state when receiving the wake-up signal, and remains in the sleep state when not receiving the wake-up signal. The boost unit 1 detects the charging parameters in the awake state, and enters the boost activation state when the charging parameters meet the preset boost conditions. The boost unit 1 receives the charging parameters in the boost activation state, and enters the standby state when the charging parameters do not meet the preset charging conditions, thereby reducing unnecessary boost activation, thereby reducing the control of boost power components (for example: MOS tube), thereby reducing system energy loss.

[0050] It should be noted that if Figure 1As shown, the working state of the boost unit 1 also includes: a first node state, a second node state, a third node state and a fourth node state. When the boost unit 1 is in the awake state and does not receive the awake signal, it enters the first node state. The first node state unconditionally controls the state to flow to the sleep state. The boost unit 1 detects the charging parameters and enters the boost activation state when the preset boost condition is met. The boost unit 1 detects the charging parameters and enters the boost exit state when the preset charging condition is not met. The boost exit state unconditionally controls the state to flow to the second node state. When the boost unit 1 is in the boost exit state and does not receive the awake signal, it enters the first node state. The second node state unconditionally controls the state to flow to the third node state. The boost unit 1 detects the charging parameters and enters the standby state when the preset charging condition is not met. After the standby state ends, the unconditional control state flows to the fourth node state. The fourth node state unconditionally controls the state to flow to the awake state. When the boost unit 1 is in the fourth node state and does not receive the awake signal, it enters the first node state. The idle state is the standby state.

[0051] Based on this, an embodiment of the present application provides a vehicle-mounted photovoltaic system.

[0052] refer to Figure 2 , Figure 2 This is a schematic structural diagram of the first embodiment of the vehicle-mounted photovoltaic system proposed in the embodiments of the present application.

[0053] Considering reducing the number of times the boost unit 1 enters the boost activation state, and in order to reduce the control of boost power components (such as MOS tubes) and reduce system energy loss, based on the first embodiment, as Figure 2 As shown, the vehicle-mounted photovoltaic system includes: a boost unit 1 and an MPPT controller 2;

[0054] The working states of the boost unit 1 include: awake state, standby state and boost activation state;

[0055] The boost unit 1 is connected to the power battery and the MPPT controller 2 respectively, and the MPPT controller 2 is connected to the energy storage battery and the solar panel;

[0056] The MPPT controller 2 is used to detect the current power of the energy storage battery and send a wake-up signal to the boost unit 1 when the current power reaches a preset charging power;

[0057] The boost unit 1 is used to enter a wake-up state upon receiving a wake-up signal;

[0058] The boost unit 1 is further used to detect charging parameters in the awake state, and enter the boost activation state when the charging parameters meet the preset boost conditions;

[0059] The boost unit 1 is further configured to receive charging parameters in a boost activation state, and enter a standby state when the charging parameters do not meet a preset charging condition.

[0060] It should be noted that the charging parameters include: vehicle state parameters, current electrical parameters of the power battery and current parameters of the energy storage battery. The vehicle state parameters are that the vehicle is in a parking state, a boost activation state and that the vehicle has no charging prohibition fault. The charging parameters satisfying the preset boost conditions include: when the power battery charge is less than a first preset charge, the power battery voltage is greater than a preset voltage, the power battery charging power is greater than a preset power, and the energy storage battery charge is greater than a second preset charge, then the boost activation state is entered. The charging parameters not satisfying the preset charging conditions include: the charging parameters not satisfying the preset boost conditions, the boost unit 1 does not receive a wake-up signal from the MPPT controller 2 or the MPPT controller 2 fails or the energy storage battery charge is less than a third preset charge, then the standby state is entered, the power battery charge is the power battery SOC, the energy storage battery charge is the energy storage battery SOC, and the battery SOC (State of Charge) Charge) is the charge state of the battery, that is, the available state of the remaining power in the battery, and is an important indicator reflecting the remaining capacity of the battery. The charging power of the power battery is controlled by the battery management system 4 (BMS). The first preset charge, preset voltage, preset power, second preset charge and third preset charge can be set according to actual conditions, and this embodiment is not limited. For example: the first preset charge is 90%, the preset voltage is 290V, the preset power is 1000W, the second preset charge is 60% and the third preset charge is 22%.

[0061] It should be noted that the MPPT (Maximum Power Point Tracking) controller is used to control the solar panel to be in the maximum power working state, the energy storage battery is used to store the electric energy generated by the solar panel when there is sufficient light, and the power battery is used to receive and store energy from the on-board charger, generator, brake energy recovery device or external charging device (for example: on-board photovoltaic system), and convert this electric energy into kinetic energy required for vehicle driving. The wake-up signal can be a current signal or a voltage signal, which can be set according to actual conditions and is not limited in this embodiment. The preset charging power can be set according to the rated circuit of the energy storage battery and is not limited in this embodiment. The failure of the MPPT controller 2 can be an inability to start, or a failure of overcharging or over-discharging protection, or a failure of maximum power point tracking.

[0062] It should be noted that the awake state means that the main chip of the boost unit 1 has started working and can send and receive messages normally, but has not started to operate the high-frequency switches (MOS tubes) of the high and low voltage parts. The boost unit can send and receive information normally. The boost activation state means that the high-frequency switches of the high and low voltage circuits of the primary and secondary sides of the DCDC are in the operating state, and can be normally turned on and off (MOS tubes, IGBT) The operation includes the boost activation state, that is, the primary and secondary side switches are operated to boost, and the boost exit state, that is, the boost operation is stopped. The standby state means that the main chip of the boost unit 1 is awakened, but it is in a state of unloading the internal inductor and capacitor voltage. At this time, the electromagnetic switch of the primary and secondary side circuits is in a state of not loading voltage and not operating. It is similar to the awake state, which is an energy-saving state, but the system timer is turned on at this time, and the awake state can only be entered again after the timing time is met.

[0063] In this embodiment, the MPPT controller 2 detects the current power of the energy storage battery, and when the current power reaches the preset charging power, sends a wake-up signal to the boost unit 1. When the boost unit 1 receives the wake-up signal, it enters the wake-up state. The boost unit 1 also detects the charging parameters in the wake-up state, and enters the boost activation state when the charging parameters meet the preset boost conditions. The boost unit 1 also receives the charging parameters in the boost activation state, and enters the standby state when the charging parameters do not meet the preset charging conditions, thereby reducing unnecessary boost activation, thereby reducing the control of boost power components (for example: MOS tube), thereby reducing system energy loss.

[0064] Reference Figure 3 , Figure 3 This is a schematic structural diagram of a second embodiment of a vehicle-mounted photovoltaic system proposed in an embodiment of the present application.

[0065] Considering the detection of vehicle state parameters and current power battery parameters, and in order to reduce system energy loss, based on the second embodiment, as Figure 3 As shown, the charging parameters include: vehicle state parameters and current electrical parameters of the power battery;

[0066] The vehicle-mounted photovoltaic system also includes: a vehicle controller 3 and a battery management system 4;

[0067] The vehicle controller 3 is connected to the battery management system 4 and the boost unit 1 respectively, and the battery management system 4 is also connected to the boost circuit;

[0068] The vehicle controller 3 is used to detect the vehicle running state and output the corresponding vehicle state parameters to the boost unit 1;

[0069] The battery management system 4 is used to detect the current electrical parameters of the power battery and output them to the boost unit 1 .

[0070] It should be noted that the vehicle status parameters include: vehicle parking status and vehicle no charging prohibited fault, etc. The current parameters of the power battery include: charging voltage, charging current, discharging voltage, discharging current, etc.

[0071] In a specific implementation, the vehicle operating status is detected by the vehicle controller 3, and the corresponding vehicle status parameters are output to the boost unit 1. The battery management system 4 detects the current electrical parameters of the power battery and outputs them to the boost unit 1, so that the boost unit 1 can adjust the status in time according to the vehicle status parameters and the current parameters of the power battery, thereby reducing the system energy loss.

[0072] Furthermore, the boost unit 1 is also used to maintain a dormant state when no wake-up signal is received.

[0073] It should be noted that the dormant state refers to a state in which the boost unit 1 is in a state in which the main chip of the boost unit 1 is not powered on or awakened or is in a self-test process.

[0074] In a specific implementation, when the boost unit 1 does not receive a wake-up signal, it remains in a dormant state, thereby reducing system energy consumption.

[0075] Furthermore, the boost unit 1 is also used to perform a self-check process when receiving a wake-up signal;

[0076] The boost unit 1 is also used to enter a wake-up state after completing a self-check process.

[0077] It should be noted that the self-check process includes activating the main chip of the boost unit 1 and loading the program.

[0078] In a specific implementation, when the boost unit 1 receives the wake-up signal, the boost unit 1 activates the main chip of the boost unit 1 and performs a self-check process for program loading, and enters the wake-up state after completing the self-check process.

[0079] Furthermore, the MPPT controller 2 is also used to detect the current power of the energy storage battery and output it to the boost unit 1;

[0080] The boost unit 1 is further used to determine whether the current power of the energy storage battery meets the preset standby condition when receiving the current power of the energy storage battery;

[0081] The boost unit 1 is also used to enter a short standby state when the current power of the energy storage battery meets a preset standby condition;

[0082] The boost unit 1 is also used to enter a long standby state when the current power level of the energy storage battery does not meet a preset standby condition.

[0083] It should be noted that the current power meets the preset standby conditions, including: when the current power of the energy storage battery is greater than the first preset power, or the current power of the energy storage battery is greater than the second preset power and the MPPT power coefficient is greater than the preset coefficient, the boost unit 1 enters a short standby state, otherwise it enters a long standby state.

[0084] It should be noted that the current power of the energy storage battery refers to the total amount of energy currently stored in the battery. The first preset power, the second preset power and the preset coefficient can be set according to actual conditions, and this embodiment is not limited. For example: the first preset power is 50%, the second preset power is 40%, and the preset coefficient is 0.5.

[0085] It should be noted that the purpose of long and short standby settings is that if the boost is exited due to changes in the status of the vehicle or photovoltaic system, such as vehicle movement, gun insertion, failure, 48V photovoltaic battery is already at low power, etc., if the photovoltaic energy storage battery power or current power generation is considerable, then check whether the vehicle and photovoltaic charging system have charging conditions as soon as possible in a short time, and charge again as soon as possible. However, if the photovoltaic energy storage battery power or current power generation is poor, starting the boost unit confirmation requires waiting, then a long standby period is performed to avoid invalid startup or activation.

[0086] In a specific implementation, the MPPT controller 2 detects the current power of the energy storage battery and outputs it to the boost unit 1. When receiving the current power of the energy storage battery, the boost unit 1 determines whether the current power of the energy storage battery meets the preset standby condition. When the current power of the energy storage battery meets the preset standby condition, the boost unit 1 enters a short standby state. When the current power of the energy storage battery does not meet the preset standby condition, the boost unit 1 enters a long standby state, thereby reducing unnecessary boost activation, thereby reducing the control of boost power components (for example: MOS tube), and thus reducing system energy loss.

[0087] Furthermore, the boost unit 1 is also used to start counting the standby time when entering the standby state;

[0088] The boost unit 1 is further configured to enter a wake-up state when the standby time in the short standby state exceeds a first time;

[0089] The boost unit 1 is further configured to enter a wake-up state when the standby time in the long standby state exceeds a second time.

[0090] It should be noted that the first time and the second time can be set according to actual conditions, and this embodiment does not limit them. For example, the first time is 10 minutes and the second time is 30 minutes.

[0091] In a specific implementation, when the boost unit 1 enters the standby state, the standby time timing starts. When the standby time in the short standby state exceeds the first time, the boost unit 1 enters the wake-up state. When the standby time in the long standby state exceeds the second time, the boost unit 1 enters the wake-up state, thereby reducing system energy loss.

[0092] Further, the MPPT controller 2 is used to send a first fault signal to the boost unit 1 when a fault of the energy storage battery is detected;

[0093] The boost unit 1 is configured to enter a dormant state upon receiving a first fault signal.

[0094] It should be noted that energy storage battery failures include: thermal failure, electrical failure, and mechanical failure.

[0095] In a specific implementation, when the MPPT controller 2 detects a fault in the energy storage battery, it sends a first fault signal to the boost unit 1. When the boost unit 1 receives the first fault signal, it enters a dormant state, thereby reducing system energy loss.

[0096] Furthermore, the battery management system 4 is used to send a second fault signal to the boost unit 1 when a fault of the power battery is detected;

[0097] The boost unit 1 is used to enter a standby state when receiving a second fault signal.

[0098] It should be noted that power battery failures include: thermal failure, electrical failure, and mechanical failure.

[0099] In a specific implementation, when the battery management system 4 detects a fault in the power battery, it sends a second fault signal to the boost unit 1. When the boost unit 1 receives the second fault signal, it enters a standby state, thereby reducing system energy loss.

[0100] To achieve the above objectives, the present application also proposes a voltage boosting device, which includes the vehicle-mounted photovoltaic system as described above.

[0101] To achieve the above objectives, the present application also proposes an electric vehicle, which includes the vehicle-mounted photovoltaic system as described above.

[0102] The specific structure of the boosting device refers to the above-mentioned embodiments. Since the boosting device adopts all the technical solutions of all the above-mentioned embodiments, it at least has all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be described one by one here.

[0103] The above are only preferred embodiments of the present application, and are not intended to limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A vehicle-mounted photovoltaic system, characterized in that: The vehicle-mounted photovoltaic system includes: a boost unit and an MPPT controller; The working states of the boost unit include: awake state, standby state and boost activation state; The boost unit is connected to the power battery and the MPPT controller respectively, and the MPPT controller is connected to the energy storage battery and the solar panel; The MPPT controller is used to detect the current power of the energy storage battery and send a wake-up signal to the boost unit when the current power reaches a preset charging power; The boost unit is used to enter a wake-up state upon receiving a wake-up signal; The boost unit is further used to detect charging parameters in the awake state, and enter a boost activation state when the charging parameters meet a preset boost condition; The boost unit is further configured to receive charging parameters in a boost activation state, and enter a standby state when the charging parameters do not meet a preset charging condition.

2. The vehicle-mounted photovoltaic system according to claim 1, characterized in that: The charging parameters include: vehicle status parameters and current electrical parameters of the power battery; The vehicle-mounted photovoltaic system also includes: a vehicle controller and a battery management system; The vehicle controller is connected to the battery management system and the boost unit respectively, and the battery management system is also connected to the boost circuit; The vehicle controller is used to detect the vehicle running state and output corresponding vehicle state parameters to the boost unit; The battery management system is used to detect the current electrical parameters of the power battery and output them to the boost unit.

3. The vehicle-mounted photovoltaic system according to claim 1, characterized in that: The boost unit is further configured to maintain a dormant state when no wake-up signal is received.

4. The vehicle-mounted photovoltaic system according to claim 1, characterized in that: The boost unit is further configured to execute a self-check process upon receiving a wake-up signal; The boost unit is also used to enter a wake-up state after completing the self-check process.

5. The vehicle-mounted photovoltaic system according to claim 1, characterized in that: The MPPT controller is also used to detect the current power of the energy storage battery and output it to the boost unit; The boost unit is further configured to determine whether the current power of the energy storage battery meets a preset standby condition when receiving the current power of the energy storage battery; The boost unit is further configured to enter a short standby state when the current power level of the energy storage battery meets a preset standby condition; The boost unit is also used to enter a long standby state when the current power level of the energy storage battery does not meet a preset standby condition.

6. The vehicle-mounted photovoltaic system according to claim 5, characterized in that: The boost unit is also used to start counting the standby time when entering the standby state; The boost unit is further configured to enter a wake-up state when the standby time in the short standby state exceeds a first time; The boost unit is further configured to enter a wake-up state when the standby time in the long standby state exceeds a second time.

7. The vehicle-mounted photovoltaic system according to claim 1, characterized in that: The MPPT controller is used to send a first fault signal to the boost unit when a fault in the energy storage battery is detected; The boost unit is used to enter a sleep state when receiving a first fault signal.

8. The vehicle-mounted photovoltaic system according to claim 2, characterized in that: The battery management system is used to send a second fault signal to the boost unit when a fault of the power battery is detected; The boost unit is used to enter a standby state when receiving a second fault signal.

9. A boosting device, characterized in that: The voltage boosting device comprises the vehicle-mounted photovoltaic system according to any one of claims 1 to 8.

10. An electric vehicle, characterized in that: The electric vehicle comprises the on-board photovoltaic system according to any one of claims 1 to 8.

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