Charging control method and apparatus, and photovoltaic charging system, vehicle-mounted terminal and vehicle

Abstract

The present application relates to a charging control method and apparatus, and a photovoltaic charging system, a vehicle-mounted terminal and a vehicle. The photovoltaic charging system comprises a photovoltaic module, a traction battery pack and a non-traction battery pack. The charging control method comprises: acquiring the photovoltaic power of a photovoltaic module (202); and on the basis of different preset power intervals, controlling the photovoltaic module to charge a corresponding charging object under different photovoltaic powers (204), wherein the charging object comprises one of a traction battery pack and a non-traction battery pack, and the non-traction battery pack is used for supplying power to the traction battery pack or supplying power to a vehicle-mounted device. Segmented power utilization is performed on the photovoltaic module on the basis of different preset power intervals, thereby implementing charging control strategies for different charging objects.

Description

Charging control method and device, photovoltaic charging system, vehicle-mounted terminal and vehicle

[0001] Related applications

[0002] The present application claims priority to the Chinese patent application No. 2024110394022, filed on July 31, 2024, and entitled “Charging control method and device, photovoltaic charging system, vehicle-mounted terminal and vehicle”, the contents of which are hereby incorporated by reference in its entirety. TECHNICAL FIELD

[0003] The present application relates to the field of photovoltaic technology, and in particular to a charging control method and device, a photovoltaic charging system, a vehicle-mounted terminal and a vehicle. BACKGROUND

[0004] The statements herein are provided only to complement the background information of the present application and do not necessarily constitute the prior art.

[0005] With the increasing use rate and market share of new energy vehicles, the rapid development of battery costs and the photovoltaic industry, the combination of photovoltaic and new energy vehicles has laid an important foundation. Currently, the manufacturing and installation technology of photovoltaic roof is becoming mature, and foreign automobile companies have begun to use photovoltaic roof, and some domestic automobile companies have also begun to debug and use sample vehicles. However, in the existing scheme of charging the power battery with the output of the vehicle-mounted photovoltaic, there are problems of low charging efficiency and high energy consumption.

[0006] SUMMARY

[0007] According to various embodiments of the present application, a charging control method and device, a photovoltaic charging system, a vehicle-mounted terminal and a vehicle are provided.

[0008] A charging control method applied to a photovoltaic charging system of a vehicle, the photovoltaic charging system comprising a photovoltaic assembly, a power battery pack and a non-power battery pack, the charging control method comprising:

[0009] obtaining a photovoltaic power of the photovoltaic assembly;

[0010] controlling the photovoltaic assembly to charge a corresponding charging object under different photovoltaic powers based on different preset power intervals, the charging object comprising one of the power battery pack and the non-power battery pack, the non-power battery pack being configured to supply power to the power battery pack or to a vehicle-mounted device.

[0011] In one of the embodiments, the controlling the photovoltaic assembly to charge the corresponding charging object under different photovoltaic powers based on different preset power intervals comprises:

[0012] In a case where the photovoltaic power is in a first preset power interval, according to the battery state information of the non-power battery pack, the photovoltaic assembly is controlled to charge the non-power battery pack or the photovoltaic assembly and the non-power battery pack are controlled to charge the power battery pack;

[0013] In a case where the photovoltaic power is in a second preset power interval, the photovoltaic assembly is controlled to charge the power battery pack;

[0014] The maximum value of the first preset power interval is less than the minimum value of the second preset power interval.

[0015] In one of the embodiments, the non-power battery pack includes a photovoltaic energy storage battery and an on-board auxiliary battery, the first preset power interval includes a first preset range and a second preset range, and in a case where the photovoltaic power is in the first preset power interval, according to the battery state information of the non-power battery pack, the photovoltaic assembly is controlled to charge the non-power battery pack or the power battery pack, including:

[0016] In a case where the photovoltaic power is in the first preset range and it is determined based on the battery state information of the on-board auxiliary battery that the on-board auxiliary battery needs to be charged, the photovoltaic assembly is controlled to charge the on-board auxiliary battery, and the on-board auxiliary battery supports power supply to on-board devices;

[0017] In a case where the photovoltaic power is in the second preset range and it is determined based on the battery state information of the photovoltaic energy storage battery that the photovoltaic energy storage battery needs to be discharged, the photovoltaic assembly and the photovoltaic energy storage battery are controlled to charge the power battery pack;

[0018] The minimum value of the second preset range is greater than the maximum value of the first preset range.

[0019] In one of the embodiments, in a case where the photovoltaic power is in the first preset power interval, according to the battery state information of the non-power battery pack, the photovoltaic assembly is controlled to charge the non-power battery pack or the power battery pack, further including:

[0020] In a case where the photovoltaic power is in the second preset range and it is determined based on the battery state information of the photovoltaic energy storage battery that the photovoltaic energy storage battery needs to be charged, the photovoltaic assembly is controlled to charge the photovoltaic energy storage battery.

[0021] In one of the embodiments, the non-power battery pack includes a photovoltaic energy storage battery, the first preset power interval includes a second preset range, and in a case where the photovoltaic power is in the first preset power interval, according to the battery state information of the non-power battery pack, the photovoltaic assembly is controlled to charge the non-power battery pack or the power battery pack, further including:

[0022] In the case that the photovoltaic power is in the second preset range, the photovoltaic assembly is controlled to charge the photovoltaic energy storage battery or the photovoltaic assembly and the photovoltaic energy storage battery are controlled to charge the power battery pack according to the battery state information of the photovoltaic energy storage battery and the state information of the vehicle.

[0023] In one of the embodiments, in the case that the photovoltaic power is in the second preset power interval, the photovoltaic assembly is controlled to charge the power battery pack, which comprises:

[0024] In the case that the photovoltaic power is in the second preset power interval, the state information of the vehicle is acquired; the state information of the vehicle comprises an operating state.

[0025] In the case that the operating state of the vehicle is a parking state, the photovoltaic assembly is controlled to charge the power battery pack.

[0026] In one of the embodiments, the state information of the vehicle further comprises a temperature in the cabin; and the control of the photovoltaic assembly to charge the power battery pack in the case that the photovoltaic power is in the second preset power interval further comprises:

[0027] In the case that the operating state of the vehicle is a parking state and the temperature in the cabin meets a preset condition, the photovoltaic assembly is controlled to charge the power battery pack.

[0028] In one of the embodiments, the control of the photovoltaic assembly to charge the power battery pack in the case that the photovoltaic power is in the second preset power interval further comprises:

[0029] In the case that the operating state of the vehicle is a parking state and the temperature in the cabin does not meet a preset condition, the temperature in the cabin is cooled until the temperature in the cabin meets a preset condition.

[0030] In one of the embodiments, the photovoltaic charging system further comprises a battery management module; and the charging control method further comprises:

[0031] In the case that the photovoltaic assembly is controlled to charge the power battery pack, the battery management module is controlled to monitor the battery state of the power battery pack.

[0032] In one of the embodiments, the charging control method further comprises:

[0033] The photovoltaic assembly is controlled to output maximum power based on the determined maximum power point of the photovoltaic assembly.

[0034] A charging control device applied to a photovoltaic charging system of a vehicle, the photovoltaic charging system comprising a photovoltaic assembly, a power battery pack and a non-power battery pack, the charging control device comprising:

[0035] an acquisition module configured to acquire a photovoltaic power of the photovoltaic assembly;

[0036] a control module configured to control the photovoltaic assembly to charge a corresponding charging object in a case of different photovoltaic powers based on different preset power intervals, the charging object comprising one of the power battery pack and the non-power battery pack, the non-power battery pack being configured to supply power to the power battery pack or to a vehicle-mounted device.

[0037] A photovoltaic charging system comprising:

[0038] a power battery pack and a non-power battery pack, the non-power battery pack being configured to supply power to the power battery pack or to a vehicle-mounted device;

[0039] a photovoltaic assembly configured to convert solar energy into electric energy;

[0040] a control circuit configured to acquire a photovoltaic power of the photovoltaic assembly, and control the photovoltaic assembly to charge a corresponding charging object in a case of different photovoltaic powers based on different preset power intervals, the charging object comprising one of the power battery pack and the non-power battery pack.

[0041] In one of the embodiments, the photovoltaic charging system further comprises:

[0042] a voltage conversion circuit connected with the control circuit, the photovoltaic assembly, the power battery pack and the non-power battery pack respectively, and configured to perform voltage adjustment processing on a signal output by the photovoltaic assembly to charge the charging object.

[0043] In one of the embodiments, the photovoltaic charging system further comprises:

[0044] a battery management module;

[0045] The control circuit is further configured to control the battery management module to monitor a battery state of the power battery pack in a case of controlling the photovoltaic assembly to charge the power battery pack.

[0046] A vehicle-mounted terminal comprising a memory and a processor, the memory storing a computer program, and the processor implementing steps of the charging control method as described above when executing the computer program.

[0047] A vehicle comprising the charging control device as described above, or the photovoltaic charging system as described above, or the vehicle terminal as described above. Details of one or more embodiments of the present disclosure are set forth in the accompanying drawings and the description below. Other features, objects, and advantages of the application will be apparent from the description, drawings, and claims. BRIEF DESCRIPTION OF DRAWINGS

[0048] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the drawings required to be used in the embodiments or the prior art description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0049] Fig. 1 is a structural block diagram of a photovoltaic charging system according to an embodiment;

[0050] Fig. 2 is a flowchart of a charging control method according to an embodiment;

[0051] Fig. 3 is a flowchart of a charging control method according to an embodiment;

[0052] Fig. 4 is a flowchart of a charging control method according to an embodiment;

[0053] Fig. 5 is a flowchart of a charging control method according to an embodiment;

[0054] Fig. 6 is a flowchart of a charging control method according to an embodiment;

[0055] Fig. 7 is a flowchart of a charging control method according to an embodiment;

[0056] Fig. 8 is a structural block diagram of a charging control device according to an embodiment;

[0057] Fig. 9 is a structural block diagram of a photovoltaic charging system according to an embodiment;

[0058] Fig. 10 is a flowchart of a charging control method according to an embodiment;

[0059] Fig. 11 is a flowchart of a charging control method according to an embodiment;

[0060] Fig. 12 is a flowchart of a charging control method according to an embodiment. DETAILED DESCRIPTION

[0061] In order to make the purposes, technical solutions and advantages of the present application more clear, the present application will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and not intended to limit the present application.

[0062] It can be understood that the terms "first", "second", and the like used in the present application can be used herein to describe various elements, but these elements are not limited by these terms. These terms are only used to distinguish the first element from another element, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, for example, two, three, etc., unless otherwise explicitly specified. It should be noted that when an element is referred to as "disposed on" another element, it can be directly on another element or there can be a middle element. When an element is considered to be "connected" to another element, it can be directly connected to another element or there can be a middle element.

[0063] FIG. 1 is a schematic diagram of an application environment of a charging control method and device and a vehicle terminal in an embodiment. As shown in FIG. 1, the charging control method and device and the vehicle terminal are applied to a photovoltaic charging system of a vehicle, and the photovoltaic charging system includes a photovoltaic assembly 110, a power battery pack 120, and a non-power battery pack 130.

[0064] The photovoltaic assembly 110 can be disposed at any position of the vehicle that can absorb solar energy, for example, can be disposed at a roof position of the vehicle. The photovoltaic assembly 110 can convert the absorbed solar energy into direct-current electric energy to charge the power battery pack 120 and the non-power battery pack 130. The photovoltaic assembly 110 can include a plurality of photovoltaic cell units, the plurality of photovoltaic cell units are connected in series or connected in parallel, and the plurality of photovoltaic cell units can be arranged in an array. The photovoltaic cell unit is used to directly convert solar energy into electric energy.

[0065] The power battery pack 120 can serve as a main power source for the vehicle, and can supply power to various vehicle-mounted devices and driving devices during vehicle operation. The power battery pack 120 can include one or more power batteries. The non-power battery pack 130 can include a photovoltaic energy storage battery 131 and a vehicle-mounted auxiliary battery 132. The photovoltaic energy storage battery 131 can store energy or supply power to the power battery pack 120. The vehicle-mounted auxiliary battery 132 can serve as a backup power source for the vehicle, and can supply auxiliary power to various vehicle-mounted devices and driving devices in an emergency situation, for example, a situation in which the power battery pack 120 fails to normally supply power. Optionally, the photovoltaic charging system further includes a BMS. When the power battery pack 120 is in a charging state, the BMS monitors the battery state of the power battery pack 120 to ensure the safety of the power battery pack 120 and the vehicle.

[0066] Optionally, as shown in FIG. 1, the photovoltaic charging system comprises a photovoltaic controller 140, and the charging control method can be executed by the photovoltaic controller 140; further optionally, the photovoltaic controller can acquire the output power of the photovoltaic assembly 110, and can also communicate with each battery pack to collect the battery state and other information of each battery pack, and the photovoltaic controller 140 can also receive the output power of the photovoltaic assembly 110 and transmit the output power to each battery pack based on the battery state and other information of each battery pack.

[0067] The charging control method and device and the vehicle-mounted terminal of the present application can control the photovoltaic assembly 110 to charge any one of the power battery pack 120 and the non-power battery pack 130 in a power segmented manner, implement the charging control strategy of different charging objects, thereby realizing efficient use of photovoltaic power and improving charging efficiency; and when the BMS needs to monitor the state of the power battery pack 120, since the photovoltaic assembly 110 only charges the power battery pack 120 when the photovoltaic power is in a certain preset power interval, the BMS does not need to be turned on in real time, thereby increasing the charging speed under the condition of reducing the power consumption of the BMS, and the efficiency is higher.

[0068] FIG. 2 is a flowchart of the charging control method in one embodiment. As shown in FIG. 2, the charging control method comprises steps 202 to 204.

[0069] Step 202: acquiring the photovoltaic power of the photovoltaic assembly.

[0070] Step 204: based on different preset power intervals, controlling the photovoltaic assembly to charge the corresponding charging object under different photovoltaic power. The charging object comprises one of a power battery pack and a non-power battery pack, and the non-power battery pack is used to supply power to the power battery pack or to supply power to the vehicle-mounted equipment.

[0071] Among them, the steps of the charging control method can be executed by the photovoltaic controller, and the internal part of the photovoltaic controller can comprise a power detection circuit, through which the photovoltaic power of the photovoltaic assembly can be detected. For the related introduction of the photovoltaic assembly, the power battery pack and the non-power battery pack, please refer to the previous embodiment.

[0072] Among them, there is a one-to-one correspondence between the different preset power intervals and the different charging objects, by acquiring the photovoltaic power of the photovoltaic assembly, based on the determined preset power interval to which the photovoltaic power belongs, the charging object at the photovoltaic power can be determined, and then the photovoltaic assembly is controlled to charge the corresponding charging object. In this way, efficient use of photovoltaic power can be realized, and charging efficiency can be improved.

[0073] In the related art, a photovoltaic assembly directly converts a low voltage photovoltaic output into a high voltage to charge a power battery pack. Since the capacity of the power battery pack of a vehicle is large (for example, 60 degrees of electricity can be required), according to the theoretical average of 1.5 degrees of electricity per day of photovoltaic output, the charging efficiency is too low. Moreover, direct conversion of a low voltage photovoltaic output into a high voltage can require multiple stages of voltage conversion, and the conversion efficiency is generally low. In addition, when charging the power battery pack, the BMS needs to be turned on all the time, and the energy consumption is not low. If the photovoltaic assembly is always charging a non-power battery pack, and the capacity of the non-power battery pack is small, the power generated by the photovoltaic assembly can be wasted.

[0074] The charging control method provided by the embodiment controls the photovoltaic assembly to charge the corresponding charging object under different photovoltaic powers based on different preset power intervals. On the one hand, the power of the photovoltaic assembly is segmented and utilized based on different preset power intervals, and the charging control strategy of different charging objects is realized, thereby realizing efficient use of photovoltaic power and improving charging efficiency. On the other hand, the photovoltaic assembly only charges the power battery pack when the photovoltaic power is in a certain preset power interval, thereby reducing the power consumption of the BMS and increasing the charging speed, and the efficiency is higher.

[0075] In one embodiment, as shown in FIG. 3, the photovoltaic assembly is controlled to charge the corresponding charging object under different photovoltaic powers based on different preset power intervals, including steps 302-304.

[0076] In step 302, when the photovoltaic power is in a first preset power interval, the photovoltaic assembly is controlled to charge the non-power battery pack or the photovoltaic assembly and the non-power battery pack are controlled to charge the power battery pack according to the battery state information of the non-power battery pack. In step 304, when the photovoltaic power is in a second preset power interval, the photovoltaic assembly is controlled to charge the power battery pack.

[0077] The battery state information of the non-power battery pack can include, for example, the state of charge (SOC) of the battery, and the available amount of charge in the battery, expressed as a percentage. The SOC can reflect the amount of electricity in the battery, and the charging and discharging requirements of the non-power battery pack can be determined based on the battery state information. Optionally, the steps of the charging control method can be performed by a photovoltaic controller, which can communicate with the non-power battery pack through CAN / LIN / RS485 communication to obtain the SOC.

[0078] The maximum value of the first preset power interval is less than the minimum value of the second preset power interval. In the case of the first preset power interval, the power output by the photovoltaic assembly is relatively low, and can be applicable to the charging demand of the non-power battery pack. If it is determined based on the battery state information of the non-power battery pack that the non-power battery pack has a charging demand, the photovoltaic assembly can be directly controlled to charge the non-power battery pack, so as to avoid waste of the power generation capacity of the photovoltaic assembly. In another case, if it is determined based on the battery state information of the non-power battery pack that the non-power battery pack has no charging demand, although the power of the photovoltaic assembly itself is low, the non-power battery pack and the photovoltaic assembly can be combined to charge the power battery pack at the same time, and can be applicable to the charging demand of the power battery pack, which is fast and efficient. In the case of the second preset power interval, the power output by the photovoltaic assembly is relatively high, and the photovoltaic assembly can be applicable to the charging demand of the power battery pack.

[0079] Therefore, by steps 302-304, the power segmented charging of the photovoltaic assembly can be implemented, the charging demand of different charging objects can be matched, efficient charging can be achieved, and energy consumption can be reduced.

[0080] In one of the embodiments, the non-power battery pack includes a photovoltaic energy storage battery and an auxiliary battery on a vehicle, and the photovoltaic energy storage battery and the auxiliary battery on the vehicle can be described with reference to the above embodiments. As shown in FIG. 4, in the case that the photovoltaic power is in the first preset power interval, the photovoltaic assembly is controlled to charge the non-power battery pack or the power battery pack according to the battery state information of the non-power battery pack, including steps 402-404.

[0081] Step 402: in the case that the photovoltaic power is in the first preset range and it is determined based on the battery state information of the auxiliary battery on the vehicle that the auxiliary battery on the vehicle needs to be charged, the photovoltaic assembly is controlled to charge the auxiliary battery on the vehicle, and the auxiliary battery on the vehicle supports power supply to the vehicle-mounted equipment; and step 404: in the case that the photovoltaic power is in the second preset range and it is determined based on the battery state information of the photovoltaic energy storage battery that the photovoltaic energy storage battery needs to be discharged, the photovoltaic assembly and the photovoltaic energy storage battery are controlled to charge the power battery pack.

[0082] The first preset power interval includes a first preset range and a second preset range, and the minimum value of the second preset range is greater than the maximum value of the first preset range. In the case that the photovoltaic power is in the first preset range, the photovoltaic power is relatively small, and in the case that the photovoltaic power is in the second preset range, the photovoltaic power is relatively large.

[0083] The charging and discharging demand of the auxiliary battery on the vehicle and the photovoltaic energy storage battery can be determined based on the battery state information.

[0084] The vehicle-mounted auxiliary battery is a storage battery for emergency power supply of in-vehicle power supply equipment. The vehicle-mounted auxiliary battery has a small capacity and is generally only used in a part of the capacity. The vehicle-mounted auxiliary battery is applicable to small-power charging. In a case where the photovoltaic power is in a first preset range and the vehicle-mounted auxiliary battery is determined to be charged based on battery state information of the vehicle-mounted auxiliary battery, the photovoltaic module is controlled to charge the vehicle-mounted auxiliary battery. The charging demand of the vehicle-mounted auxiliary battery can be met, the waste of the photovoltaic power is avoided, and the photovoltaic utilization rate is improved.

[0085] The photovoltaic energy storage battery has a relatively large capacity compared with the vehicle-mounted auxiliary battery and is applicable to medium-power charging. In a case where the photovoltaic power is in a second preset range and the photovoltaic energy storage battery is determined to be discharged based on battery state information of the photovoltaic energy storage battery, it is determined that the photovoltaic energy storage battery is in a full charge or near-full charge state. The photovoltaic module and the photovoltaic energy storage battery are controlled to charge the power battery pack. The charging demand of the power battery pack can be met. The charging speed is increased under the condition of reducing the power consumption of the BMS. The efficiency is higher.

[0086] In one of the embodiments, as shown in FIG. 4, in a case where the photovoltaic power is in a first preset power interval, the photovoltaic module is controlled to charge the non-power battery pack or the power battery pack according to the battery state information of the non-power battery pack. Step 406 is further included.

[0087] Step 406, in a case where the photovoltaic power is in a second preset range and the photovoltaic energy storage battery is determined to be charged based on the battery state information of the photovoltaic energy storage battery, the photovoltaic module is controlled to charge the photovoltaic energy storage battery.

[0088] The photovoltaic energy storage battery has a relatively large capacity compared with the vehicle-mounted auxiliary battery and is applicable to medium-power charging. In a case where the photovoltaic power is in a second preset range and the photovoltaic energy storage battery is determined to be charged based on the battery state information of the photovoltaic energy storage battery, the photovoltaic module is controlled to charge the photovoltaic energy storage battery. The charging demand of the photovoltaic energy storage battery can be met, and the charging efficiency is improved.

[0089] In one of the embodiments, as shown in FIG. 5, the non-power battery pack includes a photovoltaic energy storage battery, the first preset power interval includes a second preset range, and in a case where the photovoltaic power is in the first preset power interval, the photovoltaic module is controlled to charge the non-power battery pack or the power battery pack according to the battery state information of the non-power battery pack. Step 502 is further included.

[0090] Step 502, in a case where the photovoltaic power is in the second preset range, the photovoltaic module is controlled to charge the photovoltaic energy storage battery according to the battery state information of the photovoltaic energy storage battery and the state information of the vehicle, or the photovoltaic module and the photovoltaic energy storage battery are controlled to charge the power battery pack.

[0091] The state information of the vehicle can include an operating state of the vehicle, a cabin temperature in the vehicle, and the like. Based on the battery state information of the photovoltaic energy storage battery and the state information of the vehicle, the charging and discharging demand of the photovoltaic energy storage battery and the charging environment of the power battery pack can be determined. The charging state of the power battery pack is controlled based on the charging environment of the power battery pack, so as to ensure the charging safety and stability of the power battery pack and the vehicle.

[0092] In a case where the photovoltaic power is in the second preset range, based on the battery state information of the photovoltaic energy storage battery and the state information of the vehicle, in a case where it is determined that the photovoltaic energy storage battery needs to be charged, the photovoltaic assembly is controlled to charge the photovoltaic energy storage battery, so that the power of the photovoltaic assembly matches the charging demand of the charging object, and the charging efficiency is improved. In a case where it is determined that the photovoltaic energy storage battery can support discharging and the current charging environment of the power battery pack meets the safe charging condition, the photovoltaic assembly and the photovoltaic energy storage battery are controlled to charge the power battery pack, so that the charging efficiency is improved on the basis of reducing power consumption and improving safety.

[0093] Further, how to control the charging of the photovoltaic energy storage battery and the power battery pack according to the battery state information of the photovoltaic energy storage battery and the state information of the vehicle can refer to the following embodiments, which will not be described here.

[0094] In one of the embodiments, as shown in FIG. 6, in a case where the photovoltaic power is in the second preset power interval, the photovoltaic assembly is controlled to charge the power battery pack, including steps 602-604.

[0095] Step 602, in a case where the photovoltaic power is in the second preset power interval, the state information of the vehicle is obtained; the state information of the vehicle includes an operating state; step 604, in a case where the operating state of the vehicle is a parking state, the photovoltaic assembly is controlled to charge the power battery pack.

[0096] The second preset power interval is relatively larger than the first preset power interval. In a case where the photovoltaic power is in the second preset power interval, the photovoltaic power can be understood as being relatively larger than other photovoltaic powers, and the power can meet the charging demand of the power battery pack.

[0097] The operating state of the vehicle includes an operating state, which can include a parking state and a starting state. The parking state can be understood as a closed state of the electrical system of the vehicle, i.e., a non-ignition or closed state of the vehicle. The starting state can be understood as a powered-on state of the electrical system of the vehicle, i.e., an ignition or on state of the vehicle. In a case where the operating state of the vehicle is a parking state, the photovoltaic assembly is controlled to charge the power battery pack, so as to further improve the charging safety of the power battery pack and the vehicle, and further improve the convenience of charging control.

[0098] Optionally, the acquiring the state information of the vehicle can determine the running state of the vehicle by acquiring an IG signal (Ignition signal) of the vehicle, for example, when the IG signal is in a low level state, it is determined that the vehicle is in a parking state, and when the IG signal is in a high level state, it is determined that the vehicle is in a starting state.

[0099] In the embodiment, when the photovoltaic power is in the second preset power interval, the state information of the vehicle is acquired first, the current running state of the vehicle is determined, and when it is determined that the running state of the vehicle is in a parking state, the photovoltaic module is controlled to charge the power battery pack, which can further improve the charging safety. It can be understood that the determination of the running state of the vehicle introduced in the embodiment can further improve the charging safety and the convenience of charging control in actual application, but it should be noted that the first preset power interval and the second preset power interval can be safety power intervals set according to actual charging needs, and the power in the two intervals can realize safe charging.

[0100] In other embodiments, in order to further combine other charging environments of the power battery pack for charging control, the state information of the vehicle can also include other vehicle parameters, for example, it can also include the temperature in the cabin, and optional examples are described below.

[0101] In one of the embodiments, as shown in FIG. 7, the state information of the vehicle also includes the temperature in the cabin; when the photovoltaic power is in the second preset power interval, the control of the photovoltaic module to charge the power battery pack also includes: step 702.

[0102] Step 702, when the running state of the vehicle is in a parking state and the temperature in the cabin meets a preset condition, the photovoltaic module is controlled to charge the power battery pack. Thus, the charging safety and the convenience of charging control can be further improved, and the comfort of the user in the vehicle can also be improved. Optionally, the preset condition can be that the temperature in the cabin is less than a preset upper limit temperature value.

[0103] Optionally, when the photovoltaic power is in the second preset power interval, the state information of the vehicle can be acquired first, the current running state of the vehicle is determined, and when it is determined that the running state of the vehicle is in a parking state, the temperature in the cabin is further determined, and when the temperature in the cabin is less than a preset upper limit temperature value, the photovoltaic module is controlled to charge the power battery pack.

[0104] In one of the embodiments, please continue to refer to FIG. 7, when the photovoltaic power is in the second preset power interval, the control of the photovoltaic module to charge the power battery pack also includes: step 704.

[0105] At step 704, in a case where the running state of the vehicle is the parking state and the temperature in the cabin does not satisfy the preset condition, the temperature in the cabin is lowered until the temperature in the cabin satisfies the preset condition.

[0106] Optionally, the photovoltaic charging system can include a fan, in a case where the running state of the vehicle is the parking state and the temperature in the cabin does not satisfy the preset condition, the fan is controlled to start to dissipate heat, the temperature in the cabin is lowered by heat dissipation of the fan until the temperature in the cabin satisfies the preset condition, and the photovoltaic assembly is controlled to charge the power battery pack.

[0107] In one of the embodiments, the photovoltaic charging system further includes a battery management module; and the charging control method further includes: in a case where the photovoltaic assembly is controlled to charge the power battery pack, the battery management module is controlled to monitor the battery state of the power battery pack.

[0108] Optionally, in a case where the charging control method is executed by the photovoltaic controller, the BMS and the photovoltaic controller can communicate in real time, the photovoltaic controller can send the BMS information such as voltage, current, temperature, soc, and state code of the battery based on detection, so that the BMS monitors the battery state of the power battery pack, and executes relevant steps based on the battery state to meet the charging and discharging safety requirements of the lithium battery and the safety requirements of the vehicle.

[0109] Optionally, the BMS can be internally provided with a high-voltage switch, which can be understood as a physical switch such as a relay or a switch tube, and the BMS can be controlled to start when a wake-up signal is sent to the high-voltage switch of the BMS.

[0110] In one of the embodiments, the charging control method further includes: based on the determined maximum power point of the photovoltaic assembly, the photovoltaic assembly is controlled to output at the maximum power to maximize the output power of the photovoltaic assembly. Optionally, the charging control method can be executed by an MPPT (Maximum Power Point Tracking) photovoltaic controller, the photovoltaic assembly absorbs solar energy and outputs to the photovoltaic controller as an input source, the photovoltaic controller makes the output always run at the maximum power point through a certain MPPT control method, and charging to the vehicle auxiliary battery, the photovoltaic energy storage battery, and the power battery pack can be realized.

[0111] It should be understood that the steps in the flowchart above are displayed in sequence according to the arrows, but these steps are not necessarily executed in the order indicated by the arrows. Unless otherwise specified herein, the execution of these steps is not strictly limited in sequence, and these steps can be executed in other orders. Moreover, at least some of the steps in the flowchart above can include multiple sub-steps or multiple stages, which are not necessarily executed at the same time, but can be executed at different times, and the execution order of these sub-steps or stages is not necessarily sequential, but can be alternated or alternated with at least part of other steps or sub-steps or stages of other steps.

[0112] The embodiment of the present application also provides a charging control device. The implementation scheme for solving the problem provided by the device is similar to the implementation scheme described in the above method, so the specific limitations in the following charging control device embodiment can refer to the limitations of the charging control method in the above text, and will not be repeated here.

[0113] In one embodiment, as shown in FIG. 8, a charging control device is provided, which is applied to a photovoltaic charging system of a vehicle, the photovoltaic charging system including a photovoltaic assembly, a power battery pack and a non-power battery pack, and the charging control device includes an acquisition module 802 and a control module 804.

[0114] The acquisition module 802 is configured to acquire photovoltaic power of the photovoltaic assembly, and the control module 804 is configured to control the photovoltaic assembly to charge a corresponding charging object under different photovoltaic power based on different preset power intervals, the charging object including one of the power battery pack and the non-power battery pack, and the non-power battery pack is configured to supply power to the power battery pack or to a vehicle-mounted device.

[0115] The charging control device provided by the embodiment acquires the photovoltaic power of the photovoltaic assembly through the acquisition module 802, and controls the photovoltaic assembly to charge the corresponding charging object under different photovoltaic power based on different preset power intervals. On the one hand, the power of the photovoltaic assembly is segmented and utilized based on different preset power intervals, and the charging control strategy of different charging objects is realized, thereby realizing efficient use of photovoltaic power and improving charging efficiency. On the other hand, the photovoltaic assembly only charges the power battery pack when the photovoltaic power is in a certain preset power interval, thereby the BMS does not need to be started in real time, the charging speed is increased under the condition of reducing the power consumption of the BMS, and the efficiency is higher.

[0116] Based on the same inventive concept, the application further provides a photovoltaic charging system for implementing the above-mentioned photovoltaic charging system method. The implementation scheme for solving the problem provided by the photovoltaic charging system is similar to the implementation scheme described in the above method and device, so the specific limitations in the following photovoltaic charging system embodiments can be referred to the limitations of the charging control method and device described above, which will not be repeated here.

[0117] In one of the embodiments, the photovoltaic charging system comprises a power battery pack and a non-power battery pack, a photovoltaic assembly, and a control circuit.

[0118] The power battery pack and the non-power battery pack are used to supply power to the power battery pack or to supply power to the on-board equipment; the photovoltaic assembly is used to convert solar energy into electrical energy; the control circuit is used to acquire the photovoltaic power of the photovoltaic assembly; based on different preset power intervals, the photovoltaic assembly is controlled to charge the corresponding charging object under different photovoltaic power, and the charging object comprises one of the power battery pack and the non-power battery pack. The control circuit can be the photovoltaic controller mentioned in the above embodiments, and the power battery pack, the non-power battery pack, the photovoltaic assembly, and the photovoltaic controller are referred to the above embodiments.

[0119] The photovoltaic charging system provided by the embodiment acquires the photovoltaic power of the photovoltaic assembly, controls the photovoltaic assembly to charge the corresponding charging object under different photovoltaic power based on different preset power intervals, on the one hand, the photovoltaic assembly is segmented and utilized based on different preset power intervals, the charging control strategy of different charging objects is realized, thereby realizing efficient use of photovoltaic power and improving charging efficiency; on the other hand, the photovoltaic assembly only charges the power battery pack when the photovoltaic power is in a certain preset power interval, thereby the BMS does not need to be started in real time, the charging speed is increased under the condition of reducing the power consumption of the BMS, and the efficiency is higher.

[0120] In one of the embodiments, on the basis of the auxiliary reference of FIG. 1, as shown in FIG. 9, the photovoltaic charging system further comprises a voltage conversion circuit (such as 902 in the figure) connected with the control circuit (such as the photovoltaic controller 140 in the figure), the photovoltaic assembly, the power battery pack, and the non-power battery pack, respectively, and used to perform voltage adjustment processing on the signal output by the photovoltaic assembly to charge the charging object. The voltage conversion circuit may, for example, comprise a direct-current-direct-current step-down circuit.

[0121] In one of the embodiments, as shown in FIG. 9, the photovoltaic charging system further comprises a battery management module (such as 904 in the figure); wherein the control circuit is further used to control the battery management module to monitor the battery state of the power battery pack in the case of controlling the photovoltaic assembly to charge the power battery pack. The related description of the battery management module is referred to the above embodiments, which will not be repeated here.

[0122] The division of the charging control device and the photovoltaic charging system in the above embodiment is only for illustration, and in other embodiments, the charging control device and the photovoltaic charging system can be divided into different modules as needed to complete all or part of the functions of the charging control device and the photovoltaic charging system.

[0123] Each module in the charging control device and the photovoltaic charging system can be implemented in whole or in part by software, hardware, or a combination thereof. Each module can be embedded in or independent of the processor in the computer device in hardware form, or can be stored in the memory in the computer device in software form, so that the processor can call and execute the operations corresponding to each module.

[0124] The following is an example of a photovoltaic module placed on the roof of a vehicle, referred to as a photovoltaic roof, with preset power intervals A, B, and C, where A < B < C. The output of the photovoltaic roof is connected to the input of the photovoltaic controller, the output of the photovoltaic controller can be connected to each battery pack through a DC-DC step-down circuit, and the output of the photovoltaic energy storage battery can be connected to the power battery pack through a DC-DC step-down circuit. The communication end of the photovoltaic controller can communicate with each battery pack through CAN / LIN / RS485:

[0125] Embodiment one

[0126] As shown in FIG. 10, the photovoltaic controller first determines the preset power interval corresponding to the photovoltaic power. When it is determined that the output power of the photovoltaic roof is in the A interval, and the SOC of the auxiliary battery on the vehicle is determined to be charged, the DC-DC circuit is turned on to convert the output of the photovoltaic roof and charge the auxiliary battery on the vehicle. When it is determined that the auxiliary battery on the vehicle supports discharging, power is supplied to the vehicle equipment.

[0127] Embodiment two

[0128] As shown in FIG. 11, the photovoltaic controller first determines the preset power interval corresponding to the photovoltaic power, and after determining that the output power of the photovoltaic roof is in the B interval, judges whether the IG signal is low, i.e., whether the vehicle is in parking and the electrical system is in a power-off state. Then, it is judged whether the temperature in the cabin is over limit. If it is over limit, the fan is turned on for cooling until the temperature in the cabin is lower than the preset upper limit value, and the photovoltaic energy storage battery is charged. During the charging process, it is detected based on the battery state of the photovoltaic energy storage battery whether the photovoltaic energy storage battery is fully charged. After being fully charged, the high-voltage switch is opened, the BMS communication is started, and the output of the photovoltaic roof and the photovoltaic energy storage battery together pass through the DC-DC boost circuit to charge the vehicle power battery. If during the period, it is detected based on the battery state of the photovoltaic energy storage battery that the photovoltaic energy storage battery is not fully charged, the photovoltaic energy storage battery is recharged. At this time, the high-voltage switch is closed, the BMS communication is disconnected, and after being fully charged, the high-voltage switch is re-opened.

[0129] Embodiment Three

[0130] As shown in FIG. 12, the photovoltaic controller first determines the preset power interval corresponding to the photovoltaic power, and after determining that the output power of the photovoltaic roof is in the C interval, judges whether the vehicle signal is low, i.e., whether the vehicle is in parking and the electrical system is in a power-off state. Then, it is judged whether the temperature in the cabin is over limit. If it is over limit, the fan is turned on for cooling until the temperature in the cabin is lower than the preset upper limit value, and the high-voltage BMS communication is started. According to the battery demand information of the CAN communication, the high-voltage channel is opened to charge the power battery pack.

[0131] The embodiment of the present application also provides a vehicle-mounted terminal, which comprises a memory and a processor. The memory stores a computer program, and the processor implements the steps of the charging control method as described above when executing the computer program. The photovoltaic power can be used with high efficiency and the charging efficiency can be improved on the basis of reducing power consumption.

[0132] The embodiment of the present application also provides a vehicle, which comprises the charging control device as described above, or the photovoltaic charging system as described above, or the vehicle-mounted terminal as described above. The photovoltaic power can be used with high efficiency and the charging efficiency can be improved on the basis of reducing power consumption.

[0133] The present application also provides a computer program product, which comprises a computer program. The computer program is executed by a processor to implement the steps of the charging control method of the above embodiment.

[0134] Any reference to storage, memory, database or other medium can include non-volatile and / or volatile storage. Suitable non-volatile memory can include read only memory (ROM), programmable ROM (PROM), electronically programmable ROM (EPROM), or electrically erasable programmable ROM (EEPROM). Volatile memory can include random access memory (RAM), which acts as external cache memory. By way of illustration and not limitation, RAM is available in many forms such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), Synchlink DRAM (SLDRAM), Rambus DRAM (RDRAM), direct Rambus dynamic RAM (DRDRAM), and Rambus dynamic RAM (RDRAM).

[0135] The technical features of the above-mentioned embodiments can be combined in any manner. For the sake of brevity, not all possible combinations of the technical features of the above-mentioned embodiments are described, however, as long as the combinations of the technical features do not contradict each other, they should be considered to be within the scope of the present disclosure.

[0136] The above-mentioned embodiments only express several implementation manners of the present application, and the description is relatively specific and detailed, but it should not be understood as a limitation on the patent scope of the present application. It should be pointed out that, for ordinary skilled in the art, some modifications and improvements can be made without departing from the concept of the present application, and these should be considered to be within the protection scope of the present application. Therefore, the patent protection scope of the present application should be subject to the appended claims.

Claims

1. A charging control method applied to a photovoltaic charging system of a vehicle, the photovoltaic charging system comprising a photovoltaic assembly, a power battery pack and a non-power battery pack, the charging control method comprising: obtaining a photovoltaic power of the photovoltaic assembly; controlling the photovoltaic assembly to charge a corresponding charging object in a case of different photovoltaic powers based on different preset power intervals, the charging object comprising one of the power battery pack and the non-power battery pack, the non-power battery pack being configured to supply power to the power battery pack or to supply power to a vehicle-mounted device. 2.The charging control method of claim 1, wherein the controlling the photovoltaic assembly to charge the corresponding charging object in the case of different photovoltaic powers based on the different preset power intervals comprises: in a case that the photovoltaic power is in a first preset power interval, controlling the photovoltaic assembly to charge the non-power battery pack or controlling the photovoltaic assembly and the non-power battery pack to charge the power battery pack according to battery state information of the non-power battery pack; in a case that the photovoltaic power is in a second preset power interval, controlling the photovoltaic assembly to charge the power battery pack; wherein a maximum value of the first preset power interval is less than a minimum value of the second preset power interval. 3.The charging control method of claim 2, wherein the non-power battery pack comprises a photovoltaic energy storage battery and a vehicle-mounted auxiliary battery, the first preset power interval comprises a first preset range and a second preset range, and the controlling the photovoltaic assembly to charge the non-power battery pack or the power battery pack according to the battery state information of the non-power battery pack in the case that the photovoltaic power is in the first preset power interval comprises: in a case that the photovoltaic power is in the first preset range and it is determined that the vehicle-mounted auxiliary battery needs to be charged based on battery state information of the vehicle-mounted auxiliary battery, controlling the photovoltaic assembly to charge the vehicle-mounted auxiliary battery, the vehicle-mounted auxiliary battery supporting power supply to the vehicle-mounted device; in a case that the photovoltaic power is in the second preset range and it is determined that the photovoltaic energy storage battery needs to be discharged based on battery state information of the photovoltaic energy storage battery, controlling the photovoltaic assembly and the photovoltaic energy storage battery to charge the power battery pack; wherein a minimum value of the second preset range is greater than a maximum value of the first preset range. 4.The charging control method of claim 3, wherein the controlling the photovoltaic assembly to charge the non-power battery pack or the power battery pack according to the battery state information of the non-power battery pack in the case that the photovoltaic power is in the first preset power interval further comprises: in a case that the photovoltaic power is in the second preset range and it is determined that the photovoltaic energy storage battery needs to be charged based on the battery state information of the photovoltaic energy storage battery, controlling the photovoltaic assembly to charge the photovoltaic energy storage battery. ​ 5. The charging control method of claim 2, wherein the non-power battery pack comprises a photovoltaic energy storage battery, and the first preset power interval comprises a second preset range, and in a case where the photovoltaic power is in the first preset power interval, the photovoltaic assembly is controlled to charge the non-power battery pack or the power battery pack according to battery state information of the non-power battery pack, and the method further comprises: in a case where the photovoltaic power is in the second preset range, the photovoltaic assembly is controlled to charge the photovoltaic energy storage battery according to battery state information of the photovoltaic energy storage battery and state information of the vehicle. In a case where the photovoltaic power is in the second preset range, the photovoltaic assembly and the photovoltaic energy storage battery are controlled to charge the power battery pack according to battery state information of the photovoltaic energy storage battery and state information of the vehicle.

6. The charge control method according to claim 2, characterized by, 7. The charging control method of claim 2, wherein in a case where the photovoltaic power is in the second preset power interval, the photovoltaic assembly is controlled to charge the power battery pack, comprising: in a case where the photovoltaic power is in the second preset power interval, obtaining state information of the vehicle; The state information of the vehicle comprises a running state; In a case where the running state of the vehicle is a parking state, the photovoltaic assembly is controlled to charge the power battery pack.

8. The charging control method of claim 7, wherein the state information of the vehicle further comprises a temperature in a cabin; and in a case where the photovoltaic power is in the second preset power interval, the photovoltaic assembly is controlled to charge the power battery pack, further comprising: in a case where the running state of the vehicle is a parking state and the temperature in the cabin meets a preset condition, the photovoltaic assembly is controlled to charge the power battery pack.

9. The charging control method of claim 8, wherein in a case where the photovoltaic power is in the second preset power interval, the photovoltaic assembly is controlled to charge the power battery pack, further comprising: in a case where the running state of the vehicle is a parking state and the temperature in the cabin does not meet the preset condition, the temperature in the cabin is cooled until the temperature in the cabin meets the preset condition. In the case where the photovoltaic power is in the second preset power interval, the photovoltaic assembly and the photovoltaic energy storage battery are controlled to charge the power battery pack according to battery state information of the photovoltaic energy storage battery and state information of the vehicle.

11. The charging control method of any one of claims 1-10, wherein the photovoltaic charging system further comprises a battery management module; and the method further comprises: in a case where the photovoltaic assembly is controlled to charge the power battery pack, the battery management module is controlled to monitor battery state of the power battery pack. ​ ​ ​ 10. The charge control method according to claim 7, characterized by, ​ ​ ​ ​ ​ ​ 12. The charge control method according to claim 11, characterized by, The battery management module is provided with a high-voltage switch, and the control of the battery management module to monitor the battery state of the power battery pack comprises: sending a wake-up signal to the high-voltage switch to control the battery management module to start monitoring the battery state of the power battery pack.

13. The charging control method of any one of claims 1-10, wherein the charging control method further comprises: controlling the photovoltaic assembly to output maximum power based on the determined maximum power point of the photovoltaic assembly.

14. A charging control device applied to a photovoltaic charging system of a vehicle, the photovoltaic charging system comprising a photovoltaic assembly, a power battery pack, and a non-power battery pack, the charging control device comprising: an acquisition module configured to acquire photovoltaic power of the photovoltaic assembly; a control module configured to control the photovoltaic assembly to charge a corresponding charging object in a case of different photovoltaic power based on different preset power intervals, the charging object comprising one of the power battery pack and the non-power battery pack, the non-power battery pack being configured to supply power to the power battery pack or to a vehicle-mounted device.

15. A photovoltaic charging system comprising: a power battery pack and a non-power battery pack, the non-power battery pack being configured to supply power to the power battery pack or to a vehicle-mounted device; a photovoltaic assembly configured to convert solar energy into electrical energy; a control circuit configured to acquire photovoltaic power of the photovoltaic assembly, and control the photovoltaic assembly to charge a corresponding charging object in a case of different photovoltaic power based on different preset power intervals, the charging object comprising one of the power battery pack and the non-power battery pack.

16. The photovoltaic charging system of claim 15, further comprising: a voltage conversion circuit connected with the control circuit, the photovoltaic assembly, the power battery pack, and the non-power battery pack, respectively, and configured to perform voltage adjustment processing on a signal output by the photovoltaic assembly to charge the charging object.

17. The photovoltaic charging system of claim 16, wherein the voltage conversion circuit comprises a direct-current-direct-current step-down circuit.

18. The photovoltaic charging system of claim 15, further comprising: a battery management module; wherein the control circuit is further configured to control the battery management module to monitor a battery state of the power battery pack in a case of controlling the photovoltaic assembly to charge the power battery pack.

19. A vehicle-mounted terminal comprising a memory and a processor, the memory storing a computer program, and the processor implementing steps of the charging control method of any one of claims 1-13 when executing the computer program.

20. A vehicle comprising the charging control device of claim 14, or the photovoltaic charging system of any one of claims 15-18, or the vehicle-mounted terminal of claim 19.

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