Power van and power supply control method

Abstract

The invention discloses a power van and a power supply control method. The power van comprises an electric chassis (10) and a compartment body (20) mounted on the electric chassis (10), a UPS module (30) for providing uninterrupted power to a UPS load (83); the chassis battery pack (41) and the electric chassis (10) are integrally arranged or installed on the electric chassis (10); the vehicle-mounted battery pack (42) is detachably assembled in the compartment body (20); the first change-over switch (43) is electrically connected with the chassis battery pack (41) and the vehicle-mounted battery pack (42) respectively and is used for selectively switching on one of the chassis battery pack (41) and the vehicle-mounted battery pack (42); wherein the UPS module (30) and the electric chassis (10) are both operably and electrically connected with the first change-over switch (43).

Description

Technical Field

[0001] The present invention relates to the technical field of power supply, and in particular to a power supply vehicle and a power supply control method. Background Art

[0002] With the rapid development of the national economy, daily production and life have higher and higher requirements for power supply. Traditional diesel generator emergency power supply vehicles are gradually unable to meet users' requirements for uninterrupted power supply.

[0003] In order to meet the user's requirements for uninterruptible power supply, a hybrid UPS (Uninterruptible Power Supply) power supply vehicle has emerged. In some related technologies, the hybrid UPS power supply vehicle has an electric chassis, and the driving function and emergency power generation function of the electric chassis share the battery energy of the electric chassis. In other related technologies, the power supply vehicle is also equipped with a power battery in the cargo box, and the power battery on the vehicle chassis and the power battery in the vehicle cargo box are used in parallel to meet the vehicle's long driving range and the vehicle's high external power output requirements. Summary of the invention

[0004] Research has found that some related technologies require batteries with larger volume and weight because the driving function and emergency power generation function of the electric chassis share the battery energy of the electric chassis, which brings difficulties to the development of mobile vehicles, and requires limiting the mileage to reserve sufficient power for power supply operations; other related technologies use the power battery on the vehicle chassis and the power battery in the vehicle cargo box in parallel. Since the voltage levels and battery capacities of the two groups of power batteries are different, it is easy to form a circulation current, which will damage the battery system and even cause safety hazards.

[0005] In view of this, the embodiments of the present disclosure provide a power supply vehicle and a power supply control method, which can improve the applicability and reliability of the power supply vehicle.

[0006] In one aspect of the present disclosure, there is provided a power supply vehicle, comprising:

[0007] An electric chassis and a compartment mounted on the electric chassis;

[0008] UPS module, used to provide uninterrupted power supply to UPS load;

[0009] A chassis battery pack, integrated with the electric chassis or installed on the electric chassis;

[0010] An on-board battery pack, detachably assembled in the compartment; and

[0011] A first switching switch, electrically connected to the chassis battery pack and the vehicle battery pack, respectively, for selectively connecting one of the chassis battery pack and the vehicle battery pack;

[0012] Wherein, the UPS module and the electric chassis are both operably electrically connected to the first switching switch.

[0013] In some embodiments, the first switching switch is configured to switch between the chassis battery pack powering the UPS load and the vehicle battery pack powering the UPS load according to a preset power supply strategy when the UPS module performs an uninterruptible power supply operation.

[0014] In some embodiments, the first switching switch is configured to preferentially switch on the vehicle-mounted battery pack to supply power to the UPS load when both the chassis battery pack and the vehicle-mounted battery pack meet preset power supply conditions.

[0015] In some embodiments, the first switching switch is configured to: when the chassis battery pack meets the preset power supply condition and the vehicle battery pack does not meet the preset power supply condition, connect the chassis battery pack to power the UPS load; and when the vehicle battery pack meets the preset power supply condition and the chassis battery pack does not meet the preset power supply condition, connect the vehicle battery pack to power the UPS load.

[0016] In some embodiments, the UPS module is also used to be operably electrically connected to a generator set so that when the UPS module performs an uninterrupted power supply operation and the chassis battery pack and the vehicle battery pack do not meet preset power supply conditions, the UPS load is powered by the generator set.

[0017] In some embodiments, the first switching switch is configured to: when the generator set supplies power to the UPS load via the UPS module, switch between the generator set charging the chassis battery pack via the UPS module and the generator set charging the vehicle battery pack via the UPS module according to a preset charging strategy.

[0018] In some embodiments, the first switch is configured to preferentially connect charging of the chassis battery pack via the UPS module in the generator set.

[0019] In some embodiments, the preset power supply conditions of the vehicle-mounted battery pack include that the remaining power percentage of the vehicle-mounted battery pack is greater than or equal to a first power percentage threshold, and the sustainable power supply time is greater than or equal to a first time threshold, and the preset power supply conditions of the chassis battery pack include that the remaining power percentage of the chassis battery pack is greater than or equal to a second power percentage threshold, and the sustainable power supply time is greater than or equal to a second time threshold, wherein the first power percentage threshold is less than or equal to the second power percentage threshold, and the first time threshold is less than or equal to the second time threshold.

[0020] In some embodiments, the first power percentage threshold and the second power percentage threshold are in the range of 20% to 25%; and / or, the first time threshold and the second time threshold are not less than the time from startup to stable output of the generator set.

[0021] In some embodiments, the power supply vehicle further comprises:

[0022] a third switch electrically connected to the first switch and electrically connected to the UPS module and the electric chassis respectively, so as to realize an operable electrical connection between the UPS module and the electric chassis and the first switch;

[0023] The third switch is configured to switch between the electrical connection between the UPS module and the first switch and the electrical connection between the electric chassis and the first switch according to the working mode of the power supply vehicle.

[0024] In some embodiments, the working modes include a power supply and power conservation mode and a vehicle driving mode;

[0025] Wherein, in the power supply and power protection mode, the UPS module is operably electrically connected to the first switch via the third switch to perform a city power supply operation or an uninterruptible power supply operation;

[0026] In the vehicle driving mode, the electric chassis is operably electrically connected to the first switch via the third switch to achieve vehicle driving.

[0027] In some embodiments, the first switching switch is configured to: in a vehicle driving mode, switch between powering the electric chassis by the chassis battery pack and powering the electric chassis by the on-board battery pack according to a preset power supply strategy.

[0028] In some embodiments, the first switching switch is configured to preferentially connect the chassis battery pack to supply power to the electric chassis when both the chassis battery pack and the vehicle-mounted battery pack meet preset power supply conditions.

[0029] In some embodiments, the first switching switch is configured to: when the chassis battery pack meets the preset power supply condition and the vehicle battery pack does not meet the preset power supply condition, connect the chassis battery pack to power the electric chassis; and when the vehicle battery pack meets the preset power supply condition and the chassis battery pack does not meet the preset power supply condition, connect the vehicle battery pack to power the electric chassis.

[0030] In some embodiments, the power supply vehicle further comprises:

[0031] The alarm device is configured to issue a low-battery warning to the user when both the chassis battery pack and the vehicle-mounted battery pack fail to meet preset power supply conditions.

[0032] In some embodiments, the preset power supply condition of the vehicle-mounted battery pack includes that the remaining power percentage of the vehicle-mounted battery pack is greater than or equal to a first power percentage threshold, and the preset power supply condition of the chassis battery pack includes that the remaining power percentage of the chassis battery pack is greater than or equal to a second power percentage threshold, wherein the first power percentage threshold is less than or equal to the second power percentage threshold.

[0033] In some embodiments, the first power percentage threshold and the second power percentage threshold are in the range of 20% to 25%.

[0034] In some embodiments, the UPS module is also used to be operably electrically connected to the mains power so that when the mains power is supplied, the UPS load is powered by the mains power, and the mains power is switched between charging the chassis battery pack via the UPS module and charging the vehicle battery pack via the UPS module; or to perform uninterrupted power supply when the mains power is cut off.

[0035] In some embodiments, the power supply vehicle further comprises:

[0036] a second switching switch, electrically connected to the UPS module;

[0037] Wherein, the UPS module is configured to be operably electrically connected to the mains power and the generator set through the second switch.

[0038] In some embodiments, the first switch comprises a static transfer switch, and the second switch comprises a dual power automatic transfer switch.

[0039] In some embodiments, the UPS module includes: a main input circuit breaker, a bypass input circuit breaker, a static switch, a rectifier, an inverter and an output circuit breaker, the main input circuit breaker and the bypass input circuit breaker are both electrically connected to the power supply side, the output circuit breaker is electrically connected to the UPS load, the static switch is electrically connected to the bypass input circuit breaker and the output circuit breaker, the rectifier is electrically connected to the main input circuit breaker and the inverter, and the inverter is electrically connected to the output circuit breaker.

[0040] In some embodiments, the power supply vehicle further comprises:

[0041] A generator set is arranged on the electric chassis or on the vehicle body.

[0042] In some embodiments, the power supply vehicle further comprises:

[0043] a second switching switch, electrically connected to the UPS module;

[0044] A generator set is arranged on the electric chassis or on the vehicle body; and

[0045] A controller is connected to at least some of the signals of the first switch, the second switch, the third switch, the generator set, the UPS module and the electric chassis.

[0046] In one aspect of the present disclosure, a power supply control method for the aforementioned power supply vehicle is provided, comprising:

[0047] When the UPS module performs an uninterruptible power supply operation, the first switching switch switches between the chassis battery pack powering the UPS load and the vehicle-mounted battery pack powering the UPS load according to a preset power supply strategy.

[0048] In some embodiments, the power supply vehicle further includes: a third switch electrically connected to the first switch and electrically connected to the UPS module and the electric chassis respectively; the power supply control method further includes:

[0049] According to the working mode of the power supply vehicle, the third switch is used to switch between the electrical connection between the UPS module and the first switch and the electrical connection between the electric chassis and the first switch.

[0050] According to the embodiment of the present disclosure, the chassis battery pack and the vehicle battery pack are selectively connected through the first switching switch, and the UPS module and the electric chassis are both operably electrically connected to the first switching switch, so that the power supply mode can be automatically selected according to actual needs, and the corresponding energy management strategy can be implemented. The reserve energy of the chassis battery pack and the vehicle battery pack can be comprehensively and efficiently applied, which can not only extend the uninterrupted power supply time of the UPS module, but also increase the uninterrupted driving mileage of the vehicle, thereby improving the applicability of the power supply vehicle.

[0051] Compared with the related art in which the chassis battery pack and the vehicle battery pack are arranged in parallel, the embodiment of the present disclosure selectively connects the chassis battery pack and the vehicle battery pack through a first switching switch, so that the chassis battery pack and the vehicle battery pack are arranged independently of each other and do not interfere with each other when in use, thereby improving the reliability of the power supply vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] The accompanying drawings, which constitute a part of the specification, illustrate embodiments of the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0053] The present disclosure may be more clearly understood from the following detailed description with reference to the accompanying drawings, in which:

[0054] Figure 1 is a schematic diagram of the structure of some embodiments of the power supply vehicle according to the present disclosure;

[0055] Figure 2 is a schematic diagram of a hybrid power supply architecture according to some embodiments of the power supply vehicle of the present disclosure;

[0056] Figure 3 is a schematic diagram of a UPS load power supply strategy applied in some embodiments of the power supply vehicle of the present disclosure;

[0057] Figure 4 is a schematic diagram of an electric chassis power supply strategy applied in some embodiments of the power supply vehicle according to the present disclosure;

[0058] Figure 5 It is a signal connection diagram according to some embodiments of the power supply vehicle of the present disclosure.

[0059] It should be understood that the size of each part shown in the accompanying drawings is not drawn according to the actual proportional relationship. In addition, the same or similar reference numerals represent the same or similar components. Description of reference numerals:

[0060] 10-electric chassis; 11-driving motor; 12-chassis transmission mechanism;

[0061] 20- compartment;

[0062] 30-UPS module; 31-main input circuit breaker; 32-bypass input circuit breaker; 33-static switch; 34-rectifier; 35-inverter; 36-output circuit breaker;

[0063] 41- chassis battery pack; 42- vehicle-mounted battery pack; 43- first switching switch;

[0064] 50- second switching switch;

[0065] 60- third switching switch;

[0066] 70- alarm device;

[0067] 81-mains power; 82-generator set; 83-UPS load; 84-cable;

[0068] 90-Controller. DETAILED DESCRIPTION

[0069] Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. The description of the exemplary embodiments is merely illustrative and is in no way intended to limit the present disclosure and its application or use. The present disclosure can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are provided to make the present disclosure thorough and complete and to fully express the scope of the present disclosure to those skilled in the art. It should be noted that unless otherwise specifically stated, the relative arrangement of the components and steps, the composition of the materials, the numerical expressions and the numerical values ​​set forth in these embodiments should be interpreted as being merely exemplary and not as limiting.

[0070] The words "first", "second" and similar words used in this disclosure do not indicate any order, quantity or importance, but are only used to distinguish different parts. The words "include" or "comprise" and similar words mean that the elements before the word include the elements listed after the word, and do not exclude the possibility of including other elements. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0071] In the present disclosure, when a specific device is described as being located between a first device and a second device, there may or may not be an intermediate device between the specific device and the first device or the second device. When a specific device is described as being connected to other devices, the specific device may be directly connected to the other device without an intermediate device, or may not be directly connected to the other device but have an intermediate device.

[0072] All terms (including technical terms or scientific terms) used in the present disclosure have the same meanings as those understood by ordinary technicians in the field to which the present disclosure belongs, unless otherwise specifically defined. It should also be understood that terms defined in general dictionaries, such as general dictionaries, should be interpreted as having meanings consistent with their meanings in the context of the relevant technology, and should not be interpreted in an idealized or extremely formal sense, unless explicitly defined herein.

[0073] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered as part of the specification.

[0074] In some related technologies, a hybrid UPS power supply vehicle has an electric chassis, and the driving function and the emergency power generation function of the electric chassis share the battery energy of the electric chassis. Since the driving function and the emergency power generation function of the electric chassis share the battery energy of the electric chassis, a larger volume and weight of the battery is required, which brings difficulties to the development of mobile vehicles, and the mileage needs to be limited to reserve enough power for power supply operations, which makes this type of power supply vehicle have adaptability problems.

[0075] In other related technologies, the cargo box of the power supply vehicle is also equipped with a power battery, and the power battery on the vehicle chassis and the power battery in the cargo box are used in parallel to meet the needs of long driving range and high power output of the vehicle. Since the voltage levels and battery capacities of the two groups of power batteries in this type of power supply vehicle are different, it is easy to form a circulation, thereby damaging the battery system and even causing safety hazards. Therefore, the reliability of the power supply vehicle needs to be improved urgently.

[0076] Figure 1 It is a schematic diagram of the structure of some embodiments of the power supply vehicle according to the present disclosure. Figure 2 Schematic diagram of hybrid power supply architecture according to some embodiments of the power supply vehicle of the present disclosure. Figure 1 and Figure 2 , an embodiment of the present disclosure provides a power supply vehicle, including: an electric chassis 10, a body 20, a UPS module 30, a chassis battery pack 41, a vehicle-mounted battery pack 42 and a first switching switch 43. The body 20 is mounted on the electric chassis 10. The UPS module 30 is used to provide uninterrupted power to the UPS load 83. The chassis battery pack 41 is integrated with the electric chassis 10 or installed on the electric chassis 10. The vehicle-mounted battery pack 42 is detachably assembled in the body 20. The first switching switch 43 is electrically connected to the chassis battery pack 41 and the vehicle-mounted battery pack 42, respectively, and is used to selectively connect one of the chassis battery pack 41 and the vehicle-mounted battery pack 42; wherein the UPS module 30 and the electric chassis 10 are both electrically connected to the first switching switch 43 in an operably manner.

[0077] The electric chassis 10 is a chassis structure for an electric vehicle (EV) to achieve power and structural support for the vehicle. The electric chassis 10 may include a drive motor 11 and a chassis transmission mechanism 12, and may also integrate or set a chassis battery pack 41. In addition, the electric chassis 10 also includes a control system, etc.

[0078] The box 20 is mounted on the electric chassis 10 and can be located above the frame formed by the electric chassis 10 to accommodate various devices of the power supply vehicle. The box 20 can be provided with sound insulation materials or sound insulation structures as needed to reduce overall noise.

[0079] The UPS module 30 is an uninterruptible unit module, which can be used for uninterruptible power supply operations in various fields, such as uninterruptible power supply operations in data centers, medical institutions, communication equipment, etc.

[0080] refer to Figure 2In some embodiments, the UPS module 30 includes: a main input circuit breaker 31, a bypass input circuit breaker 32, a static switch 33, a rectifier 34, an inverter 35, and an output circuit breaker 36. The main input circuit breaker 31 and the bypass input circuit breaker 32 are both electrically connected to the power supply side, the output circuit breaker 36 is electrically connected to the UPS load 83, the static switch 33 is electrically connected to the bypass input circuit breaker 32 and the output circuit breaker 36, the rectifier 34 is electrically connected to the main input circuit breaker 31 and the inverter 35, and the inverter 35 is electrically connected to the output circuit breaker 36.

[0081] The mains 81 or other power supply mechanism (such as a generator, etc.) can supply power to the UPS load 83 via the UPS module 30. In the UPS module 30, a main input circuit breaker 31, a rectifier 34 and an inverter 35 are provided in the main path for supplying power to the UPS load 83, wherein the main input circuit breaker 31 is used to control the on and off of the main power supply path, and can realize overload or short circuit protection of the main power supply path. The function of the rectifier 34 is to convert the AC power from the mains 81 or other power supply mechanism into DC power, so as to supply power to loads requiring DC power, or to charge the battery pack. The function of the inverter 35 is to convert the DC power from the rectifier 34 or the battery pack into AC power, so as to supply power to the UPS load 83.

[0082] The UPS module 30 also includes a power supply bypass for supplying power to the UPS load 83, and a power supply bypass input circuit breaker 32 and a static switch 33 are provided in the power supply bypass. The power supply bypass input circuit breaker 32 is used to control the on and off of the power supply bypass, and can realize overload or short circuit protection of the power supply bypass. The static switch 33 is used to realize fast and smooth switching between the main power supply circuit and the power supply bypass. When the device in the main power supply circuit is abnormal or the equipment connected to the main power supply circuit (such as a battery pack, etc.) is replaced and repaired, it can switch to the power supply bypass to maintain the operation continuity of the UPS load 83. The main power supply circuit and the power supply bypass are connected in parallel and connected in series with the output circuit breaker 36. The output circuit breaker is located before the UPS load 83 and can protect the UPS load 83 from overload or short circuit.

[0083] The chassis battery pack 41 can be fixedly installed on the vehicle chassis and can only be charged but not disassembled or replaced, or it can be arranged on the vehicle frame and can be charged and disassembled or replaced. The chassis battery pack 41 can also be integrated with the electric chassis 10. The chassis battery pack 41 can include multiple battery cells or at least one battery module, and the battery module includes at least one battery cell.

[0084] The vehicle-mounted battery pack 42 is detachably assembled in the compartment 20. The vehicle-mounted battery pack 42 may be a separate battery module, such as a modular, detachable battery cabinet that can be assembled as needed. A battery module includes at least one battery cell.

[0085] The battery cell may be a secondary battery, which refers to a battery cell that can be used continuously by activating the active material by charging after the battery cell is discharged. The battery cell may be a lithium ion battery, a sodium ion battery, a sodium lithium ion battery, a lithium metal battery, a sodium metal battery, a lithium sulfur battery, a magnesium ion battery, a nickel metal hydride battery, a nickel cadmium battery, a lead storage battery, etc.

[0086] The first switching switch 43 is electrically connected to the chassis battery pack 41 and the vehicle battery pack 42, respectively, and can selectively connect one of the chassis battery pack 41 and the vehicle battery pack 42. In other words, the first switching switch 43 will not connect the chassis battery pack 41 and the vehicle battery pack 42 at the same time, but will only selectively connect one of them. The first switching switch 43 can connect one of the chassis battery pack 41 and the vehicle battery pack 42 according to a preset power supply strategy or charging strategy through a switching operation.

[0087] The first switching switch 43 may include a static transfer switch (STS), which can selectively connect one of the chassis battery pack 41 and the vehicle battery pack 42, and can also realize uninterrupted switching of the connection with the chassis battery pack 41 and the vehicle battery pack 42, so as to ensure uninterrupted power supply to the load in some cases. In addition, the switching application of the battery pack realized by the first switching switch 43 can realize the superposition of the energy of the two battery packs, effectively extending the operation time of uninterrupted power supply.

[0088] In this embodiment, the chassis battery pack and the vehicle battery pack are selectively connected through the first switching switch, and the UPS module and the electric chassis are both operably electrically connected to the first switching switch, so that the power supply mode can be automatically selected according to actual needs, and the corresponding energy management strategy can be implemented. The reserve energy of the chassis battery pack and the vehicle battery pack can be comprehensively and efficiently applied, which can not only extend the uninterrupted power supply time of the UPS module, but also increase the uninterrupted driving mileage of the vehicle, thereby improving the applicability of the power supply vehicle.

[0089] Compared with the related art that sets the chassis battery pack and the vehicle battery pack in parallel, the embodiment of the present disclosure selectively connects the chassis battery pack and the vehicle battery pack through the first switching switch, so that the chassis battery pack and the vehicle battery pack are set independently of each other and do not interfere with each other when used, thereby improving the reliability of the power supply vehicle. In this way, there is no need to match the chassis battery pack and the vehicle battery pack in terms of voltage level and battery capacity, which increases the range of usable battery packs and improves the applicability of the power supply vehicle.

[0090] In addition, the electric chassis can also be electrically connected to the chassis battery pack or the vehicle-mounted battery pack through the first switching switch, thereby realizing the new energy power supply of the vehicle, effectively reducing environmental pollution during vehicle driving, and complying with green and low-carbon emission policy requirements.

[0091] refer to Figure 2 In some embodiments, the power supply vehicle further includes a third switch 60. The third switch 60 is electrically connected to the first switch 43, and is electrically connected to the UPS module 30 and the electric chassis 10 respectively, so as to realize an operable electrical connection between the UPS module 30 and the electric chassis 10 and the first switch 43; wherein the third switch 60 is configured to switch between the electrical connection between the UPS module 30 and the first switch 43 and the electrical connection between the electric chassis 10 and the first switch 43 according to the working mode of the power supply vehicle.

[0092] The power supply vehicle may have multiple working modes, such as a power supply and power preservation mode and a vehicle driving mode. The third switching switch 60 may include two mode switches, such as a mode switch corresponding to the power supply and power preservation mode and a mode switch corresponding to the vehicle driving mode. This mode switch may be in the form of a button or a lever, as long as the circuit can be opened and closed smoothly and stably. Its main function is to realize the selection and switching of different operating modes.

[0093] exist Figure 2 In the embodiment, when the mode switch on the right side of the third switching switch 60 is closed, the UPS module 30 is connected to the first switching switch 43. At this time, the chassis battery pack 41 or the vehicle battery pack 42 connected to the first switching switch 43 can be powered through the UPS module 30 to supply power to the UPS load 83. The chassis battery pack 41 or the vehicle battery pack 42 connected to the first switching switch 43 can also be charged through the AC power 81 or other power generation equipment through the UPS module 30.

[0094] When the mode switch on the left side of the third switching switch 60 is closed, the electric chassis 10 is connected to the first switching switch 43. At this time, the chassis battery pack 41 or the vehicle battery pack 42 connected by the first switching switch 43 can be used to supply power to the drive motor 11 in the electric chassis 10 to enable the vehicle to travel.

[0095] The chassis battery pack 41, the vehicle battery pack 42, the first switch 43 and the third switch 60 can be regarded as the main components of the energy storage and management module in the power supply vehicle. The energy management in the energy storage and management module can be implemented by a dedicated controller or by a central controller of the power supply vehicle.

[0096] In this embodiment, the third switching switch 60 can select a suitable energy management strategy and method according to the desired working mode of the power supply vehicle, so as to comprehensively and efficiently utilize the reserve energy of the chassis battery pack and the vehicle battery pack.

[0097] In some embodiments, the working mode includes a power supply and power protection mode and a vehicle driving mode; wherein, in the power supply and power protection mode, the UPS module 30 is operably electrically connected to the first switching switch 43 via the third switching switch 60 to perform AC power supply operation or uninterruptible power supply operation; in the vehicle driving mode, the electric chassis 10 is operably electrically connected to the first switching switch 43 via the third switching switch 60 to realize vehicle driving.

[0098] When the power supply vehicle needs to operate in the power supply and power protection mode, the mode switch corresponding to the power supply and power protection mode in the third switching switch 60 can be closed, and the mode switch corresponding to the vehicle driving mode can be opened, so that the current is transferred between the UPS module 30 and the first switching switch 43 through the third switching switch 60, which can be used to realize AC power supply operation or uninterruptible power supply operation.

[0099] When the power supply vehicle needs to operate in the vehicle driving mode, the mode switch corresponding to the power supply and power conservation mode in the third switching switch 60 can be disconnected, and the mode switch corresponding to the vehicle driving mode can be closed, so that the current is transferred between the electric chassis 10 and the first switching switch 43 through the third switching switch 60, which can be used to achieve uninterrupted driving of the vehicle.

[0100] refer to Figure 2 In some embodiments, the UPS module 30 is also used to be operably electrically connected to the AC power 81, so that when the AC power is supplied, the UPS load 83 is powered by the AC power 81, and the AC power 81 is switched between charging the chassis battery pack 41 via the UPS module 30 and charging the vehicle battery pack 42 via the UPS module 30; or performing uninterrupted power supply operation when the AC power 81 is powered off.

[0101] The mains 81 refers to industrial frequency alternating current, and its voltage standard may vary according to different regions. The UPS module 30 can process the current of the mains 81 to power the UPS load 83, and can also charge the chassis battery pack 41 and the vehicle battery pack 42. During charging, the first switching switch 43 connects one of the chassis battery pack 41 and the vehicle battery pack 42, so that the mains 81 charges the connected battery pack via the UPS module 30 and the first switching switch 43.

[0102] In power application scenarios such as major urban facilities, major events or major conferences, once there is a power outage or voltage fluctuation in the power grid, some power equipment or activities will not be able to operate normally, which may lead to safety accidents or even events that affect social stability. For such power outages, the uninterruptible power supply operation (also known as non-stop power supply and power protection operation) carried out has connected the power supply vehicle to the power grid in advance. When the power grid suddenly loses power, it can automatically switch to the backup power supply in the power supply vehicle (such as chassis battery packs or vehicle-mounted battery packs, etc.), so that the user load equipment (i.e. UPS load) can be continuously powered, ensuring the non-stop operation mode at the user end. During the uninterruptible power supply operation, the UPS load can be the power equipment at the user end, such as the power equipment in the data center, sports venues, and college entrance examination examination halls.

[0103] refer to Figure 1 and Figure 2 In some embodiments, the power supply vehicle further comprises a second switch 50. The second switch 50 is electrically connected to the UPS module 30; the UPS module 30 is configured to be operably electrically connected to the mains 81 and the generator set 82 through the second switch 50.

[0104] The second switch 50 may include a dual power automatic transfer switch (Automatic Transfer Switch, referred to as ATS), which can be used for automatic switching between two power sources. The two power sources here are respectively the mains 81 and the generator set 82. The generator set 82 may include a diesel generator set, or a gasoline generator set, a natural gas generator set, or a solar generator set. The generator set 82 may be a component of the power supply vehicle, or may be independently provided relative to the power supply vehicle.

[0105] exist Figure 1 In the embodiment, the generator set 82 can be installed in the car body 20 and move with the power supply vehicle. The generator set 82 can also be set on the electric chassis 10. In other embodiments, the generator set 82 can be set at the power consumption site and electrically connected to the power supply vehicle through a cable. Figure 1 Also shown is a reel of a cable 84 which may also be used to connect to mains power.

[0106] The UPS module 30 can be electrically and operably connected to the mains 81 and the generator set 82 through the second switching switch 50 , and the mains power supply mode or the generator set power supply mode can be realized for the UPS load 83 by switching the second switching switch 50 .

[0107] In order to make the UPS module 30 perform uninterrupted power supply operation, the second switching switch 50 can be switched to the mains power supply mode first, and the current of the mains 81 passes through the main input circuit breaker 31, the rectifier 34, the inverter 35 and the output circuit breaker 36 of the UPS module 30 to supply power to the UPS load 83. At the same time, the current of the mains 81 passes through the first switching switch 43 to charge the vehicle battery pack 42 and the chassis battery pack 41 respectively. When charging, the first switching switch 43 can first connect to one of the vehicle battery pack 42 and the chassis battery pack 41, and start charging. After charging to a preset ratio (for example, full or 90%, etc.), it switches to connect to the other of the vehicle battery pack 42 and the chassis battery pack 41, and starts charging until it is charged to a preset ratio (for example, full or 90%, etc.). During the charging process, the chassis battery pack 41 can be set to have a higher priority than the vehicle battery pack 42.

[0108] In some embodiments, the first switching switch 43 is configured to switch between the chassis battery pack 41 powering the UPS load 83 and the vehicle battery pack 42 powering the UPS load 83 according to a preset power supply strategy when the UPS module 30 performs an uninterruptible power supply operation.

[0109] The first switch 43 can perform the switching operation according to the control instruction received from the controller. The power supply strategy can be preset in the controller, and the power supply conditions satisfied can be determined according to the monitored power, load and other data, so as to determine which power supply mode to use to supply power to the UPS load.

[0110] Figure 3 Schematic diagram of a UPS load power supply strategy applied in some embodiments of the power supply vehicle of the present disclosure. Figure 3 In some embodiments, the first switching switch 43 is configured to preferentially connect the vehicle-mounted battery pack 42 to supply power to the UPS load 83 when both the chassis battery pack 41 and the vehicle-mounted battery pack 42 meet preset power supply conditions.

[0111] Considering that the chassis battery pack 41 is installed on the electric chassis 10 and supplies power to the electric chassis 10 under operating conditions such as when the vehicle is driving, the design needs to adapt to the electric chassis 10, and its design also needs to take into account the requirements of keeping the electric chassis 10 started and maintained in operation. Therefore, when the UPS load is powered, the on-board battery pack 42 is connected first to reduce the frequency of use of the chassis battery pack 41, reduce its aging rate, and extend its service life. Moreover, the on-board battery pack 42 of the power supply vehicle can be configured with capacity and performance according to the needs of UPS operation, which is very suitable for powering UPS loads and is easy to maintain and replace.

[0112] refer to Figure 3 In some embodiments, the first switching switch 43 is configured to: when the chassis battery pack 41 meets the preset power supply condition and the vehicle battery pack 42 does not meet the preset power supply condition, connect the chassis battery pack 41 to power the UPS load 83; and when the vehicle battery pack 42 meets the preset power supply condition and the chassis battery pack 41 does not meet the preset power supply condition, connect the vehicle battery pack 42 to power the UPS load 83.

[0113] When the chassis battery pack 41 and the vehicle-mounted battery pack 42 do not both meet the preset power supply conditions, the battery pack that meets the preset power supply conditions can supply power to the UPS load 83, which is helpful for the power supply vehicle to maintain uninterrupted power supply operation as much as possible.

[0114] For the embodiment in which the UPS module 30 is operably electrically connected to the generator set 82, when the UPS module 30 performs an uninterruptible power supply operation and both the chassis battery pack 41 and the vehicle battery pack 42 do not meet the preset power supply conditions, the generator set 82 is used to power the UPS load 83.

[0115] In the case where the generator set 82 supplies power to the UPS load 83 via the UPS module 30, the first switch 43 can switch between the generator set 82 charging the chassis battery pack 41 via the UPS module 30 and the generator set 82 charging the vehicle battery pack 42 via the UPS module 30 according to a preset charging strategy. In this way, while providing uninterrupted power to the UPS load 83, the chassis battery pack 41 and the vehicle battery pack 42 are replenished in time. When the mains 81 returns to normal, the mains 81 is switched to supply power, and the generator set 82 stops supplying power.

[0116] The charging strategy can be adjusted according to actual conditions. In some embodiments, the first switch 43 is configured to preferentially connect the charging of the chassis battery pack 41 via the UPS module 30 in the generator set 82 .

[0117] Considering the influence of the chassis battery pack 41 on the vehicle driving and the function of the electric chassis 10, it is preferred that the generator set 82 charges the chassis battery pack 41 to keep the electric chassis 10 usable for a long time. After the chassis battery pack 41 is charged, the generator set 82 charges the vehicle-mounted battery pack 42 by switching the first switching switch 43.

[0118] In the above embodiment, the preset power supply conditions of the on-board battery pack 42 may include: the remaining power percentage of the on-board battery pack 42 is greater than or equal to a first power percentage threshold, and the sustainable power supply time is greater than or equal to a first time threshold. The preset power supply conditions of the chassis battery pack 41 include: the remaining power percentage of the chassis battery pack 41 is greater than or equal to a second power percentage threshold, and the sustainable power supply time is greater than or equal to a second time threshold, wherein the first power percentage threshold is less than or equal to the second power percentage threshold, and the first time threshold is less than or equal to the second time threshold.

[0119] The remaining power percentage of the battery pack can reflect the durability of the battery pack's power supply to a certain extent. A larger remaining power percentage is conducive to achieving longer continuous power supply. In addition, the sustainable power supply time of the battery pack also depends on factors such as the current load to a certain extent. A larger load will consume more power, resulting in a decrease in the sustainable power supply time of the battery pack. Therefore, when judging the power supply conditions, in addition to examining the remaining power percentage of the battery pack, the sustainable power supply time of the battery pack can also be calculated based on the remaining power of the battery pack.

[0120] Specifically, the value range of the first power percentage threshold and the second power percentage threshold may be 20% to 25%, for example, 20%, 21.5%, 22%, 23%, 24.5%, 25%, etc.

[0121] The first time threshold and the second time threshold may be no less than the time taken for the generator set 82 to start up and output stably. This is mainly because it takes a certain amount of time for the generator set 82 to start up and output stably. In order to reduce the risk of power supply interruption or quality degradation, setting a time threshold that is no less than the time taken for the generator set 82 to start up and output stably can more effectively ensure uninterrupted power supply operation.

[0122] For the above thresholds, the first power percentage threshold can be equal to the second power percentage threshold, or the first time threshold can be equal to the second time threshold to simplify the setting of power supply conditions. The first power percentage threshold can also be smaller than the second power percentage threshold, or the first time threshold can be smaller than the second time threshold, so that the chassis battery pack 41 can retain relatively more power, thereby ensuring the continuous and reliable operation of the electric chassis 10.

[0123] For example, in Figure 3 In the process, the remaining power of the vehicle battery pack 42 can be monitored in real time, and the remaining power Q 车 and the current load condition of the UPS load 83 to calculate the sustainable power supply time T of the vehicle battery pack 42 车 , and can also monitor the remaining power of the chassis battery pack 41 in real time, according to the remaining power Q 底 and the current load condition of the UPS load 83 to calculate the sustainable power supply time T of the chassis battery pack 41 底 .

[0124] Determine whether the preset power supply condition of the vehicle battery pack 42 is met, that is, the remaining power Q of the vehicle battery pack 42 车 , the first power percentage threshold Q1, the sustainable power supply time T of the vehicle battery pack 42 车 and the first time threshold T1 satisfies Q 车 ≥Q1, and T 车 ≥T1. If the preset power supply condition of the vehicle-mounted battery pack 42 is met, the first switch 43 is turned on to supply power to the UPS load 83 from the vehicle-mounted battery pack 42.

[0125] If the preset power supply condition of the vehicle-mounted battery pack 42 is not met, it is further determined whether the preset power supply condition of the chassis battery pack 41 is met, that is, the remaining power Q of the chassis battery pack 41 底 , the second power percentage threshold Q2, the sustainable power supply time T of the chassis battery pack 41 底 and the second time threshold T2 satisfies Q 底 ≥Q2, and T 底 ≥T2. If the preset power supply condition of the chassis battery pack 41 is met, the first switch 43 is turned on to supply power to the UPS load 83 from the chassis battery pack 41, otherwise the UPS load is powered by the generator set, and the vehicle-mounted battery pack 42 and the chassis battery pack 41 can also be charged separately by the generator set.

[0126] After completing the power conservation task, the power supply vehicle can be disconnected from the mains, and the vehicle driving mode can be switched through the third switch 60. In some embodiments, the first switch 43 is configured to: in the vehicle driving mode, switch between the chassis battery pack 41 supplying power to the electric chassis 10 and the vehicle-mounted battery pack 42 supplying power to the electric chassis 10 according to a preset power supply strategy.

[0127] The first switch 43 can perform a switching operation according to the control instruction received from the controller. The power supply strategy can be preset in the controller, and the power supply conditions satisfied can be determined according to the monitored power, load and other data, so as to determine which power supply mode to use to power the electric chassis.

[0128] Figure 4 Schematic diagram of an electric chassis power supply strategy applied in some embodiments of the power supply vehicle of the present disclosure. Figure 4 In some embodiments, the first switching switch 43 is configured to preferentially connect the chassis battery pack 41 to supply power to the electric chassis 10 when both the chassis battery pack 41 and the vehicle-mounted battery pack 42 meet preset power supply conditions.

[0129] Considering that the chassis battery pack 41 is usually designed according to the relevant requirements of the electric chassis 10, it is more compatible with the load of the electric chassis 10 and the power supply vehicle as a whole, which is conducive to improving the reliability and stability of vehicle driving. Therefore, when both the chassis battery pack 41 and the vehicle-mounted battery pack 42 meet the preset power supply conditions, the chassis battery pack 41 can be preferentially connected to the power supply of the electric chassis 10. In other embodiments, the vehicle-mounted battery pack 42 can also be preferentially connected to the power supply of the electric chassis 10, or a selection can be made between the chassis battery pack 41 and the vehicle-mounted battery pack 42 according to other algorithms.

[0130] refer to Figure 4 In some embodiments, the first switching switch 43 is configured to: when the chassis battery pack 41 meets the preset power supply conditions and the vehicle battery pack 42 does not meet the preset power supply conditions, connect the chassis battery pack 41 to power the electric chassis 10; and when the vehicle battery pack 42 meets the preset power supply conditions and the chassis battery pack 41 does not meet the preset power supply conditions, connect the vehicle battery pack 42 to power the electric chassis 10.

[0131] When the chassis battery pack 41 and the vehicle-mounted battery pack 42 do not both meet the preset power supply conditions, the battery pack that meets the preset power supply conditions can supply power to the electric chassis 10, which is helpful to keep the power supply vehicle running uninterruptedly as much as possible.

[0132] In some embodiments, the power supply vehicle further includes an alarm device 70, which is configured to issue a low-battery warning to the user when both the chassis battery pack 41 and the vehicle-mounted battery pack 42 do not meet preset power supply conditions.

[0133] The alarm device 70 can give an alarm reminder through sound, light, electricity, etc. in the cab of the power supply vehicle and other locations, and remind the user to charge in time by issuing a low power warning to the user, thereby ensuring the safety of the user and the vehicle.

[0134] In the above embodiment, the preset power supply condition of the vehicle battery pack 42 includes that the remaining power percentage of the vehicle battery pack 42 is greater than or equal to a first power percentage threshold, and the preset power supply condition of the chassis battery pack 41 includes that the remaining power percentage of the chassis battery pack 41 is greater than or equal to a second power percentage threshold, wherein the first power percentage threshold is less than or equal to the second power percentage threshold.

[0135] The remaining power percentage of the battery pack can reflect the durability of the battery pack's power supply to a certain extent. A larger remaining power percentage is conducive to achieving longer-term continuous power supply, thereby extending the duration of continuous vehicle driving.

[0136] Specifically, the value range of the first power percentage threshold and the second power percentage threshold can be 20%~25%, for example, 20%, 21.5%, 22%, 23%, 24.5%, 25%, etc.

[0137] For the above thresholds, the first power percentage threshold can be equal to the second power percentage threshold to simplify the setting of power supply conditions, or the first power percentage threshold can be less than the second power percentage threshold so that the chassis battery pack 41 can retain relatively more power, thereby ensuring the continuous and reliable operation of the electric chassis 10.

[0138] For example, in Figure 4 In the process, the remaining power of the chassis battery pack 41 can be monitored in real time, and the remaining power Q 底 and the load condition of the electric chassis 10 to calculate the sustainable power supply time T of the chassis battery pack 41 底 , and can also monitor the remaining power of the vehicle battery pack 42 in real time, according to the remaining power Q 车 and the current load condition of the electric chassis 10 to calculate the sustainable power supply time T of the vehicle battery pack 42 车 .

[0139] Determine whether the preset power supply condition of the chassis battery pack 41 is met, that is, the remaining power Q of the chassis battery pack 41 底 and the second power percentage threshold Q2 satisfies Q 底 ≥Q2. If the preset power supply condition of the chassis battery pack 41 is met, the first switch 43 is turned on to supply power to the electric chassis 10 from the chassis battery pack 41 .

[0140] If the preset power supply condition of the chassis battery pack 41 is not met, it is further determined whether the preset power supply condition of the vehicle-mounted battery pack 42 is met, that is, the remaining power Q of the vehicle-mounted battery pack 42 车 , the first power percentage threshold Q1 satisfies Q 车≥Q1. If the preset power supply condition of the vehicle-mounted battery pack 42 is met, the first switch 43 is turned on to supply power to the electric chassis 10 from the vehicle-mounted battery pack 42, otherwise a low power warning is issued to the user.

[0141] Figure 5 Schematic diagram of signal connection according to some embodiments of the power supply vehicle of the present disclosure. Figure 5 In some embodiments, the power supply vehicle further includes a controller 90. The controller 90 can be signal-connected with multiple other components in the power supply vehicle, including, for example, the first switching switch 43, the second switching switch 50, the third switching switch 60, the generator set 82, the UPS module 30, and the electric chassis 10. The controller 90 can communicate with some of them by wire or wireless means, or can communicate with all of them by wire or wireless means.

[0142] Controller 90 may be any conventional processor, controller, microcontroller, state machine, or various illustrative logic blocks, modules, and circuits including a general purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof.

[0143] Based on the above-mentioned embodiment of the power supply vehicle, the embodiment of the present disclosure also provides a corresponding power supply control method of the power supply vehicle. The power supply control method includes: when the UPS module 30 performs uninterrupted power supply operation, through the first switching switch 43, according to a preset power supply strategy, switching between the chassis battery pack 41 supplying power to the UPS load 83 and the vehicle-mounted battery pack 42 supplying power to the UPS load 83.

[0144] In some embodiments, the power supply vehicle also includes: a third switching switch 60, which is electrically connected to the first switching switch 43 and is respectively electrically connected to the UPS module 30 and the electric chassis 10; the power supply control method also includes: according to the working mode of the power supply vehicle, through the third switching switch 60, switching between the electrical connection between the UPS module 30 and the first switching switch 43 and the electrical connection between the electric chassis 10 and the first switching switch 43.

[0145] In this specification, multiple embodiments are described in a progressive manner, and the focus of each embodiment is different, and the same or similar parts between the embodiments can be referred to each other. For the power supply control method embodiment, since its overall and involved contents correspond to the contents in the power supply vehicle embodiment, the description is relatively simple, and the relevant parts can be referred to the partial description of the power supply vehicle embodiment.

[0146] So far, various embodiments of the present disclosure have been described in detail. In order to avoid obscuring the concept of the present disclosure, some details known in the art are not described. Based on the above description, those skilled in the art can fully understand how to implement the technical solution disclosed here.

[0147] Although some specific embodiments of the present disclosure have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present disclosure. It should be understood by those skilled in the art that the above embodiments may be modified or some technical features may be replaced by equivalents without departing from the scope and spirit of the present disclosure. The scope of the present disclosure is defined by the appended claims.

Claims

1. A power supply vehicle, characterized in that: include: An electric chassis (10) and a compartment (20) mounted on the electric chassis (10); A UPS module (30) for providing uninterrupted power to a UPS load (83); A chassis battery pack (41) is integrated with the electric chassis (10) or installed on the electric chassis (10); An on-vehicle battery pack (42) is detachably assembled in the compartment (20); and a first switching switch (43), electrically connected to the chassis battery pack (41) and the vehicle-mounted battery pack (42), respectively, and used for selectively switching on one of the chassis battery pack (41) and the vehicle-mounted battery pack (42); The UPS module (30) and the electric chassis (10) are both operably electrically connected to the first switch (43).

2. The power supply vehicle according to claim 1, characterized in that: The first switching switch (43) is configured to switch between the chassis battery pack (41) supplying power to the UPS load (83) and the vehicle-mounted battery pack (42) supplying power to the UPS load (83) according to a preset power supply strategy when the UPS module (30) performs an uninterruptible power supply operation.

3. The power supply vehicle according to claim 2, characterized in that: The first switching switch (43) is configured to preferentially switch on the on-board battery pack (42) to supply power to the UPS load (83) when both the chassis battery pack (41) and the on-board battery pack (42) meet preset power supply conditions.

4. The power supply vehicle according to claim 2, characterized in that: The first switching switch (43) is configured to: when the chassis battery pack (41) meets a preset power supply condition and the on-board battery pack (42) does not meet the preset power supply condition, connect the chassis battery pack (41) to supply power to the UPS load (83); and when the on-board battery pack (42) meets the preset power supply condition and the chassis battery pack (41) does not meet the preset power supply condition, connect the on-board battery pack (42) to supply power to the UPS load (83).

5. The power supply vehicle according to claim 1, characterized in that: The UPS module (30) is also used to be electrically connected to a generator set (82) in an operably manner, so that when the UPS module (30) performs an uninterrupted power supply operation and the chassis battery pack (41) and the vehicle-mounted battery pack (42) do not meet a preset power supply condition, the generator set (82) supplies power to the UPS load (83).

6. The power supply vehicle according to claim 5, characterized in that: The first switch (43) is configured to switch between charging the chassis battery pack (41) by the generator set (82) via the UPS module (30) and charging the vehicle battery pack (42) by the generator set (82) via the UPS module (30) according to a preset charging strategy when the generator set (82) supplies power to the UPS load (83) via the UPS module (30).

7. The power supply vehicle according to claim 6, characterized in that: The first switch (43) is configured to preferentially connect the charging of the chassis battery pack (41) via the UPS module (30) in the generator set (82).

8. The power supply vehicle according to any one of claims 3 to 7, characterized in that: The preset power supply condition of the on-board battery pack (42) includes that the remaining power percentage of the on-board battery pack (42) is greater than or equal to a first power percentage threshold, and the sustainable power supply time is greater than or equal to a first time threshold, and the preset power supply condition of the chassis battery pack (41) includes that the remaining power percentage of the chassis battery pack (41) is greater than or equal to a second power percentage threshold, and the sustainable power supply time is greater than or equal to a second time threshold, wherein the first power percentage threshold is less than or equal to the second power percentage threshold, and the first time threshold is less than or equal to the second time threshold.

9. The power supply vehicle according to claim 8, characterized in that: The first power percentage threshold and the second power percentage threshold have a value range of 20% to 25%; and / or the first time threshold and the second time threshold are not less than the time from startup to stable output of the generator set (82).

10. The power supply vehicle according to claim 1, characterized in that: Also includes: a third switch (60) electrically connected to the first switch (43), and electrically connected to the UPS module (30) and the electric chassis (10) respectively, so as to achieve an operable electrical connection between the UPS module (30) and the electric chassis (10) and the first switch (43); The third switch (60) is configured to switch between the electrical connection between the UPS module (30) and the first switch (43) and the electrical connection between the electric chassis (10) and the first switch (43) according to the working mode of the power supply vehicle.

11. The power supply vehicle according to claim 10, characterized in that: The working modes include a power supply and power conservation mode and a vehicle driving mode; Wherein, in the power supply and power protection mode, the UPS module (30) is operably electrically connected to the first switch (43) via the third switch (60) to perform a city power supply operation or an uninterruptible power supply operation; In the vehicle driving mode, the electric chassis (10) is operably electrically connected to the first switch (43) via the third switch (60) to achieve vehicle driving.

12. The power supply vehicle according to claim 1, characterized in that: The first switch (43) is configured to switch between the chassis battery pack (41) supplying power to the electric chassis (10) and the vehicle-mounted battery pack (42) supplying power to the electric chassis (10) according to a preset power supply strategy in a vehicle driving mode.

13. The power supply vehicle according to claim 12, characterized in that: The first switching switch (43) is configured to preferentially switch on the chassis battery pack (41) to supply power to the electric chassis (10) when both the chassis battery pack (41) and the vehicle-mounted battery pack (42) meet preset power supply conditions.

14. The power supply vehicle according to claim 12, characterized in that: The first switching switch (43) is configured to: when the chassis battery pack (41) meets a preset power supply condition and the on-board battery pack (42) does not meet the preset power supply condition, connect the chassis battery pack (41) to supply power to the electric chassis (10); and when the on-board battery pack (42) meets the preset power supply condition and the chassis battery pack (41) does not meet the preset power supply condition, connect the on-board battery pack (42) to supply power to the electric chassis (10).

15. The power supply vehicle according to claim 12, characterized in that: Also includes: The warning device (70) is configured to issue a low-battery warning to a user when both the chassis battery pack (41) and the vehicle-mounted battery pack (42) fail to meet preset power supply conditions.

16. The power supply vehicle according to any one of claims 13 to 15, characterized in that: The preset power supply condition of the on-board battery pack (42) includes that the remaining power percentage of the on-board battery pack (42) is greater than or equal to a first power percentage threshold, and the preset power supply condition of the chassis battery pack (41) includes that the remaining power percentage of the chassis battery pack (41) is greater than or equal to a second power percentage threshold, wherein the first power percentage threshold is less than or equal to the second power percentage threshold.

17. The power supply vehicle according to claim 16, characterized in that: The value range of the first power percentage threshold and the second power percentage threshold is 20%~25%.

18. The power supply vehicle according to claim 1, characterized in that: The UPS module (30) is also used to be electrically connected to the mains power (81) in an operably manner, so that when the mains power is supplied, the mains power (81) supplies power to the UPS load (83), and switches between charging the chassis battery pack (41) with the mains power (81) via the UPS module (30) and charging the vehicle-mounted battery pack (42) with the mains power (81) via the UPS module (30); or performing an uninterrupted power supply operation when the mains power (81) is disconnected.

19. The power supply vehicle according to claim 18, characterized in that: Also includes: A second switch (50) electrically connected to the UPS module (30); The UPS module (30) is configured to be electrically and operably connected to the mains (81) and the generator set (82) through the second switch (50).

20. The power supply vehicle according to claim 19, characterized in that: The first switch (43) comprises a static transfer switch, and the second switch (50) comprises a dual power automatic transfer switch.

21. The power supply vehicle according to claim 1, characterized in that: The UPS module (30) comprises: a main input circuit breaker (31), a bypass input circuit breaker (32), a static switch (33), a rectifier (34), an inverter (35) and an output circuit breaker (36); the main input circuit breaker (31) and the bypass input circuit breaker (32) are both electrically connected to the power supply side; the output circuit breaker (36) is electrically connected to the UPS load (83); the static switch (33) is electrically connected to the bypass input circuit breaker (32) and the output circuit breaker (36); the rectifier (34) is electrically connected to the main input circuit breaker (31) and the inverter (35); and the inverter (35) is electrically connected to the output circuit breaker (36).

22. The power supply vehicle according to claim 1, characterized in that: Also includes: A generator set (82) is arranged on the electric chassis (10) or on the vehicle body (20).

23. The power supply vehicle according to claim 10, characterized in that: Also includes: A second switch (50) electrically connected to the UPS module (30); a generator set (82), arranged on the electric chassis (10) or on the vehicle body (20); and A controller (90) is connected to at least some of the signals of the first switch (43), the second switch (50), the third switch (60), the generator set (82), the UPS module (30) and the electric chassis (10).

24. A power supply control method for a power supply vehicle according to any one of claims 1 to 23, characterized in that: include: When the UPS module (30) performs an uninterruptible power supply operation, the first switching switch (43) switches between the chassis battery pack (41) supplying power to the UPS load (83) and the vehicle-mounted battery pack (42) supplying power to the UPS load (83) according to a preset power supply strategy.

25. The power supply control method according to claim 24, characterized in that: The power supply vehicle further comprises: a third switch (60) electrically connected to the first switch (43) and electrically connected to the UPS module (30) and the electric chassis (10) respectively; the power supply control method further comprises: According to the working mode of the power supply vehicle, the third switch (60) is used to switch between the electrical connection between the UPS module (30) and the first switch (43) and the electrical connection between the electric chassis (10) and the first switch (43).

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