Combined battery replacing system and method compatible with high-voltage platform and low-voltage platform and vehicle

Abstract

The invention discloses a combined battery replacement battery system and method compatible with a high-voltage platform and a low-voltage platform and a vehicle, belongs to the technical field of new energy vehicles, can adapt to various vehicle types, enables vehicles with different voltage requirements to share battery replacement facilities, avoids the compatibility problem caused by voltage difference, increases the application range of a battery replacement mode, and improves the battery replacement efficiency. More flexible energy complementing selection is provided for a user, the battery is rapidly replaced, the waiting time is effectively shortened, the dependence on charging facilities is reduced, then the endurance anxiety is relieved, and in the development process of the automobile electric technology, stable transition is achieved at the coexistence stage of different voltage platforms.

Description

Technical Field

[0001] The present invention discloses a combined battery replacement system, method and vehicle that are compatible with high and low voltage platforms, and belongs to the technical field of new energy vehicles. Background Art

[0002] As the electric vehicle market continues to expand, problems such as range anxiety and long charging time have become factors that restrict its further popularization. The battery swap mode can complete battery replacement in a shorter time, provide a more convenient way to replenish energy, enable the vehicle to quickly restore its driving ability, reduce the time the vehicle is idle due to charging, and improve overall operational efficiency. At the same time, more and more automakers are beginning to launch models based on the 800V voltage platform. On the one hand, the 800V platform can shorten the charging time through high-voltage fast charging; on the other hand, under the same power condition, the 800V platform requires less current than the 400V platform, thereby reducing the power loss on the line, improving energy utilization efficiency, and helping to increase the range and improve vehicle performance. However, due to the low popularity of charging piles supporting the 800V platform in the current market, the maximum charging performance of the 800V platform model cannot be exerted. In addition, the current mainstream battery swap mode only supports 400V or 800V voltage platform models separately, and cannot be compatible with 400V and 800V platform models at the same time. Therefore, there is an urgent need for a battery swap system that can be compatible with 800V and 400V voltage platform models at the same time. Summary of the invention

[0003] In view of the defect that 800V and 400V voltage platform models in the current user market are not compatible with the problem of battery replacement, the present invention proposes a combined battery replacement system, method and vehicle that is compatible with high and low voltage platforms, and adopts four standard battery packs to provide power input for the whole vehicle through the chassis sub-box battery replacement. Through the battery management system, the vehicle voltage platform is identified, and then the relay is controlled to close and disconnect, and the series and parallel form of the four battery packs is controlled to meet the voltage platform requirements of the whole vehicle, which can greatly shorten the energy replenishment time of new energy vehicles, and help 800V voltage platform vehicles to achieve stronger power output and better driving performance experience, while also meeting the current market penetration rate of 400V battery replacement models.

[0004] The technical solution of the present invention is as follows:

[0005] According to a first aspect of an embodiment of the present invention, a combined battery exchange system compatible with high and low voltage platforms is provided, comprising a power battery, a high-voltage connector and a high-voltage distribution box arranged on a vehicle body floor, the power battery comprising a first battery pack, a second battery pack, a third battery pack and a fourth battery pack respectively, the high-voltage distribution box comprising a high-voltage control box electrically connected to the positive electrode of the second battery pack and the negative electrode of the fourth battery pack respectively through a high-voltage wiring harness, the negative electrode of the second battery pack and the positive electrode of the fourth battery pack are electrically connected to the positive electrode of the first battery pack and the negative electrode of the third battery pack respectively through a high-voltage wiring harness, the negative electrode of the first battery pack and the positive electrode of the third battery pack are electrically connected to both ends of the first relay respectively through a high-voltage wiring harness, the two ends of the first relay are electrically connected to one end of the second relay and the third relay respectively through a high-voltage wiring harness, the other ends of the second relay and the third relay are electrically connected to the high-voltage control box respectively through a high-voltage wiring harness, and the positive and negative electrodes of the high-voltage distribution box are electrically connected to the electrical system of the whole vehicle through a high-voltage wiring harness.

[0006] According to a second aspect of an embodiment of the present invention, a combined power exchange method compatible with high and low voltage platforms is provided, which is applied to a combined power exchange system compatible with high and low voltage platforms described in the first aspect, comprising:

[0007] After receiving the battery swap command sent by the driver, the vehicle forced power-off judgment strategy is executed according to the battery swap command until the vehicle enters the battery swap station;

[0008] Execute the battery swap process matching strategy to determine the corresponding battery swap mode, and execute the battery swap control strategy according to the battery swap mode until the battery swap is completed;

[0009] Perform a battery self-check and execute the judgment to release the maximum output power strategy until the vehicle leaves the battery replacement area.

[0010] Preferably, the battery swap instruction executes the vehicle forced power-off judgment strategy until the vehicle enters the battery swap station, including:

[0011] According to the battery swap command, determine whether the distance between the vehicle and the battery swap station is less than 5m:

[0012] Yes, proceed to the next step;

[0013] No, re-judge;

[0014] Determine whether the battery swap vehicle's deadweight is less than 1.5 tons:

[0015] Yes, the electric vehicle battery management system (BMS) limits the maximum output power of the power battery to 5kw and the maximum speed of the vehicle to no more than 5km / h;

[0016] No, the electric vehicle battery management system (BMS) limits the maximum output power of the power battery to 8kw and the maximum speed of the vehicle to no more than 5km / h;

[0017] When the distance between the vehicle and the battery swap station is less than 1m, determine whether the distance between the battery swap vehicle and the battery swap station is within the battery swap station:

[0018] Yes, the vehicle is forced to power off;

[0019] No, re-judge.

[0020] Preferably, the battery replacement process matching strategy includes:

[0021] Get the vehicle power supply mode to determine whether it is 800V;

[0022] Yes, proceed to the next step;

[0023] No, implement the 400V battery replacement matching strategy;

[0024] Get the battery replacement plan sent by the driver to determine whether it is a long-range battery replacement plan:

[0025] Yes, the power battery cell voltage is greater than 3.9V, and the battery replacement mode is mode 1;

[0026] No, the power battery cell voltage is between 3.5V-3.9V, and the battery replacement mode is mode 2.

[0027] Preferably, the 400V battery replacement matching strategy includes:

[0028] Get the battery replacement plan sent by the driver to determine whether it is a long-range battery replacement plan:

[0029] Yes, the voltage of the power battery cell is greater than 3.9V, and the battery replacement mode is mode 3;

[0030] If no, proceed to the next step;

[0031] Get the battery replacement plan sent by the driver to determine whether it is a regular battery replacement plan:

[0032] Yes, the voltage of the power battery cell is greater than 3.5V-3.9V, and the battery replacement mode is mode 4;

[0033] If no, proceed to the next step;

[0034] Get the battery replacement plan sent by the driver to determine whether it is a short-range battery replacement plan:

[0035] Yes, the voltage of the power battery cell is greater than 3.9V, and the battery replacement mode is mode 5;

[0036] No, the power battery cell voltage is greater than 3.5V-3.9V, and the battery replacement mode is mode six.

[0037] Preferably, the mode one is to use four ternary battery cell 200V standard battery packs connected in series to provide power input for 800V platform vehicles, the mode two is to use four iron-lithium battery cell 200V standard battery packs connected in series to provide power input for 800V platform vehicles, the mode three is to use any two of the four ternary battery cell 200V standard battery packs connected in parallel and the other two connected in series to provide power input for 400V platform vehicles, the mode four is to use any two of the four iron-lithium battery cell 200V standard battery packs connected in parallel and the other two connected in series to provide power input for 400V platform vehicles, the mode five is to use two ternary battery cell 200V standard battery packs connected in series to provide power input for 400V platform vehicles, and the mode six is ​​to use two iron-lithium battery cell 200V standard battery packs connected in series to provide power input for 400V platform vehicles.

[0038] Preferably, executing a battery swap control strategy according to the battery swap mode includes:

[0039] When the battery swap mode is mode 1 or mode 2, the battery swap control strategy includes: the first relay is closed, and the second relay and the third relay are disconnected;

[0040] When the battery swap mode is mode 3 or mode 4, the battery swap control strategy includes: the first relay, the second relay, and the third relay are all closed;

[0041] When the battery replacement mode is mode five and mode six, the battery replacement control strategy includes: the second relay is closed, and the first relay and the third relay are disconnected.

[0042] Preferably, the determining whether to release the maximum output power strategy includes:

[0043] The electric vehicle battery management system BMS allows power on and continues to limit the maximum output power of the corresponding power battery, and determines whether the distance between the vehicle and the battery swap station is greater than or equal to 5m:

[0044] Yes, the electric vehicle battery management system BMS releases the restriction on the maximum output power of the corresponding power battery, and the vehicle runs normally;

[0045] No, re-judge.

[0046] According to a third aspect of an embodiment of the present invention, there is provided a combined power exchange device compatible with high and low voltage platforms, comprising:

[0047] A first judgment module is used to, after receiving a battery swap instruction sent by the driver, execute a vehicle forced power-off judgment strategy according to the battery swap instruction until the vehicle enters the battery swap station;

[0048] The second judgment module is used to execute the battery swap process matching strategy to determine the corresponding battery swap mode, and execute the battery swap control strategy according to the battery swap mode until the battery swap is completed;

[0049] The third judgment module is used to perform battery self-check and execute judgment to release the maximum output power strategy until the vehicle leaves the battery replacement area.

[0050] According to a third aspect of an embodiment of the present invention, there is provided a vehicle, comprising:

[0051] one or more processors;

[0052] a memory for storing the one or more processor-executable instructions;

[0053] Wherein, the one or more processors are configured to:

[0054] Execute the method described in the first aspect of the embodiment of the present invention.

[0055] According to a fourth aspect of an embodiment of the present invention, a non-temporary computer-readable storage medium is provided. When instructions in the storage medium are executed by a processor of a terminal, the terminal is enabled to execute the method described in the first aspect of the embodiment of the present invention.

[0056] According to a fifth aspect of an embodiment of the present invention, an application product is provided. When the application product is running on a terminal, the terminal executes the method described in the first aspect of the embodiment of the present invention.

[0057] The beneficial effects of the present invention are:

[0058] The present invention provides a combined battery exchange system, method and vehicle that are compatible with high and low voltage platforms. The system can be adapted to a variety of vehicle models, so that vehicles with different voltage requirements can share battery exchange facilities, avoiding compatibility issues caused by voltage differences, increasing the scope of application of the battery exchange mode, and providing users with more flexible energy replenishment options. Quick battery replacement effectively shortens waiting time, reduces dependence on charging facilities, and thus alleviates range anxiety. In the development process of automotive electrification technology, the stage where different voltage platforms coexist is conducive to achieving a smooth transition.

[0059] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0060] Figure 1 It is a schematic block diagram of the structure of a combined power exchange system compatible with high and low voltage platforms according to an exemplary embodiment.

[0061] Figure 2It is an electrical schematic diagram of a combined power exchange system compatible with high and low voltage platforms according to an exemplary embodiment.

[0062] Figure 3 It is a flow chart of a combined power replacement method compatible with high and low voltage platforms according to an exemplary embodiment.

[0063] Figure 4 It is a schematic block diagram of the structure of a combined power exchange device compatible with high and low voltage platforms according to an exemplary embodiment.

[0064] Figure 5 The present invention is a schematic block diagram of a vehicle structure according to an exemplary embodiment. DETAILED DESCRIPTION

[0065] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0066] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0067] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0068] Embodiment 1:

[0069] Figure 1 This is a schematic block diagram of a combined power exchange system compatible with high and low voltage platforms according to an exemplary embodiment, including a power battery, a high voltage connector and a high voltage distribution box installed on the vehicle body floor by quick-change bolts, ensuring its stability and reliability.

[0070] The power battery includes a first battery pack, a second battery pack, a third battery pack and a fourth battery pack. Figure 2 As shown, the high-voltage distribution box includes a high-voltage control box electrically connected to the positive electrode of the second battery pack and the negative electrode of the fourth battery pack through a high-voltage wiring harness, the negative electrode of the second battery pack and the positive electrode of the fourth battery pack are electrically connected to the positive electrode of the first battery pack and the negative electrode of the third battery pack through a high-voltage wiring harness, the negative electrode of the first battery pack and the positive electrode of the third battery pack are electrically connected to both ends of the first relay through a high-voltage wiring harness, both ends of the first relay are electrically connected to one end of the second relay and the third relay through a high-voltage wiring harness, and the other ends of the second relay and the third relay are electrically connected to the high-voltage control box through a high-voltage wiring harness.

[0071] The positive and negative poles of the high-voltage distribution box are electrically connected to the vehicle's electrical system through high-voltage wiring harnesses, and communicate with the vehicle through low-voltage wiring harnesses. Among them, the connector is a key component of the connection, and its position and model can be customized according to the electrical architecture of different models. The high-voltage distribution box can better match the electrical system of the vehicle, and the perfect integration of the high-voltage distribution box and the vehicle's electrical system can be achieved through customized design, thereby improving the compatibility and safety of the entire vehicle's high-voltage electrical system.

[0072] Embodiment 2:

[0073] Figure 3 A combined power replacement method compatible with high and low voltage platforms is shown according to an exemplary embodiment, comprising:

[0074] Step 101, after receiving the battery swap command sent by the driver, the vehicle forced power-off judgment strategy is executed according to the battery swap command until the vehicle enters the battery swap station, the specific contents are as follows:

[0075] After receiving the battery swap command sent by the driver, determine whether the distance between the vehicle and the battery swap station is less than 5m based on the battery swap command:

[0076] Yes, proceed to the next step;

[0077] No, re-judge;

[0078] Determine whether the battery swap vehicle's deadweight is less than 1.5 tons:

[0079] Yes, the electric vehicle battery management system (BMS) limits the maximum output power of the power battery to 5kw and the maximum speed of the vehicle to no more than 5km / h;

[0080] No, the electric vehicle battery management system (BMS) limits the maximum output power of the power battery to 8kw and the maximum speed of the vehicle to no more than 5km / h;

[0081] When the distance between the vehicle and the battery swap station is less than 1m, determine whether the distance between the battery swap vehicle and the battery swap station is within the battery swap station:

[0082] Yes, the vehicle is forced to be powered off and the power battery replacement process is carried out;

[0083] No, re-judge.

[0084] Step 102, execute the battery swap process matching strategy to determine the corresponding battery swap mode, and execute the battery swap control strategy according to the battery swap mode until the battery swap is completed. The specific contents are as follows:

[0085] The battery replacement process matching strategy includes:

[0086] Get the vehicle power supply mode to determine whether it is 800V;

[0087] Yes, proceed to the next step;

[0088] No, implement the 400V battery replacement matching strategy;

[0089] Get the battery replacement plan sent by the driver to determine whether it is a long-range battery replacement plan:

[0090] Yes, the power battery cell voltage is greater than 3.9V, and the battery replacement mode is mode 1;

[0091] No, the power battery cell voltage is between 3.5V-3.9V, and the battery replacement mode is mode 2.

[0092] The above 400V battery replacement matching strategy includes:

[0093] Get the battery replacement plan sent by the driver to determine whether it is a long-range battery replacement plan:

[0094] Yes, the voltage of the power battery cell is greater than 3.9V, and the battery replacement mode is mode 3;

[0095] If no, proceed to the next step;

[0096] Get the battery replacement plan sent by the driver to determine whether it is a regular battery replacement plan:

[0097] Yes, the voltage of the power battery cell is greater than 3.5V-3.9V, and the battery replacement mode is mode 4;

[0098] If no, proceed to the next step;

[0099] Get the battery replacement plan sent by the driver to determine whether it is a short-range battery replacement plan:

[0100] Yes, the voltage of the power battery cell is greater than 3.9V, and the battery replacement mode is mode 5;

[0101] No, the power battery cell voltage is greater than 3.5V-3.9V, and the battery replacement mode is mode six.

[0102] in:

[0103] Mode 1 uses four ternary 200V standard battery packs in series to provide power input for 800V platform models;

[0104] Mode 2 uses four 200V standard lithium-ion battery packs connected in series to provide power input for 800V platform models;

[0105] Mode 3 uses any two of the four ternary cell 200V standard battery packs in parallel and the other two in series to provide power input for 400V platform models;

[0106] Mode 4 uses any two of the four 200V standard lithium-ion battery packs in parallel and the other two in series to provide power input for 400V platform models;

[0107] Mode 5 uses two ternary cell 200V standard battery packs in series to provide power input for 400V platform models;

[0108] Mode six uses two 200V standard iron-lithium battery packs in series to provide power input for 400V platform models.

[0109] The above-mentioned battery swapping mode implements the battery swapping control strategy, including:

[0110] When the battery swap mode is mode 1 and mode 2, the battery swap control strategy includes: the first relay is closed, and the second relay and the third relay are disconnected;

[0111] When the battery swap mode is mode 3 and mode 4, the battery swap control strategy includes: the first relay, the second relay and the third relay are all closed;

[0112] When the battery swap mode is mode five and mode six, the battery swap control strategy includes: the second relay is closed, and the first relay and the third relay are disconnected.

[0113] Step 103, perform battery self-check and execute judgment to release the maximum output power strategy until the vehicle leaves the battery replacement area, the specific contents are as follows:

[0114] After the battery is replaced, perform a battery self-test to determine whether to release the maximum output power strategy, including:

[0115] The electric vehicle battery management system BMS allows power on and continues to limit the maximum output power of the corresponding power battery, and determines whether the distance between the vehicle and the battery swap station is greater than or equal to 5m:

[0116] Yes, the electric vehicle battery management system BMS releases the restriction on the maximum output power of the corresponding power battery, and the vehicle runs normally;

[0117] No, re-judge and still limit the vehicle's maximum output power.

[0118] Embodiment three:

[0119] Figure 4 The present invention is a schematic block diagram of a structure of a combined power exchange device compatible with high and low voltage platforms according to an exemplary embodiment, the device comprising:

[0120] The first judgment module 210 is used to, after receiving the battery replacement instruction sent by the driver, execute the vehicle forced power-off judgment strategy according to the battery replacement instruction until the vehicle enters the battery replacement station;

[0121] The second judgment module 220 is used to execute the battery swap process matching strategy to determine the corresponding battery swap mode, and execute the battery swap control strategy according to the battery swap mode until the battery swap is completed;

[0122] The third judgment module 230 is used to perform battery self-check and execute judgment to release the maximum output power strategy until the vehicle leaves the battery replacement area.

[0123] This application can be adapted to a variety of vehicle models, so that vehicles with different voltage requirements can share battery swap facilities, avoiding compatibility issues caused by voltage differences and increasing the scope of application of the battery swap mode. Secondly, it provides users with more flexible energy replenishment options, and quickly replaces batteries to effectively shorten waiting time, reduce dependence on charging facilities, and thus reduce range anxiety. Finally, in the development of automotive electrification technology, at a stage where different voltage platforms coexist, this battery swap system will help achieve a smooth transition.

[0124] By sharing standard battery blocks, the cost of repeated R&D and production of battery systems with different specific voltages can be reduced. For battery swapping operators, it can serve more types of vehicles, improve facility utilization, and reduce operating costs. It will promote better collaboration among upstream and downstream of the industry chain, such as vehicle manufacturers, battery companies, and battery swapping station operators, and accelerate the overall development of the electric vehicle industry. It will help promote the wider application of electric vehicles, reduce the use of fuel vehicles, and thus reduce energy consumption and pollutant emissions.

[0125] Embodiment 4:

[0126] Figure 5 300 is a block diagram of a vehicle 300 provided in an embodiment of the present application. For example, the vehicle 300 may be a hybrid vehicle, a non-hybrid vehicle, an electric vehicle, a fuel cell vehicle, or other types of vehicles. The vehicle 300 may be an autonomous vehicle, a semi-autonomous vehicle, or a non-autonomous vehicle. The vehicle 300 may also be equipped with a brake-by-wire system.

[0127] Reference Figure 5, the vehicle 300 may include various subsystems, for example, an infotainment system 310, a perception system 320, a decision control system 330, a drive system 340, and a computing platform 350. The vehicle 300 may also include more or fewer subsystems, and each subsystem may include multiple components. In addition, each subsystem and each component of the vehicle 300 may be interconnected by wire or wireless means.

[0128] In some embodiments, the infotainment system 310 may include a communication system, an entertainment system, and a navigation system, among others.

[0129] The perception system 320 may include several sensors for sensing information about the environment around the vehicle 300. For example, the perception system 320 may include a global positioning system (the global positioning system may be a GPS system, or a Beidou system or other positioning systems), an inertial measurement unit (IMU), a laser radar, a millimeter wave radar, an ultrasonic radar, and a camera.

[0130] The decision control system 330 may include a computing system, a vehicle controller, a steering system, a throttle, and a braking system.

[0131] The drive system 340 may include components that provide power movement for the vehicle 300. In one embodiment, the drive system 340 may include an engine, an energy source, a transmission system, and wheels. The engine may be one or a combination of an internal combustion engine, an electric motor, and an air compression engine. The engine is capable of converting energy provided by the energy source into mechanical energy.

[0132] Some or all functions of the vehicle 300 are controlled by a computing platform 350. The computing platform 350 may include at least one processor 351 and a memory 352, and the processor 351 may execute instructions 353 stored in the memory 352.

[0133] The processor 351 may be any conventional processor, such as a commercially available CPU. The processor may also include a graphics processor (Graphic Process Unit, GPU), a field programmable gate array (Field Programmable Gate Array, FPGA), a system on chip (System on Chip, SOC), an application specific integrated circuit (Application Specific Integrated Circuit, ASIC) or a combination thereof.

[0134] The memory 352 may be implemented by any type of volatile or nonvolatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic storage, flash memory, magnetic disk or optical disk.

[0135] In addition to instructions 353 , memory 352 may also store data, such as road maps, route information, vehicle location, direction, speed, etc. The data stored in memory 352 may be used by computing platform 350 .

[0136] In an embodiment of the present disclosure, the processor 351 may execute instruction 353 to complete all or part of the steps of the above-mentioned combined battery replacement method compatible with high and low voltage platforms.

[0137] Embodiment five:

[0138] In an exemplary embodiment, a computer-readable storage medium is also provided, on which a computer program is stored. When the program is executed by a processor, a combined power replacement method compatible with high and low voltage platforms is implemented as provided in all the inventive embodiments of the present application.

[0139] Any combination of one or more computer-readable media may be used. A computer-readable medium may be a computer-readable signal medium or a computer-readable storage medium. A computer-readable storage medium may be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device or device, or any combination thereof. More specific examples (a non-exhaustive list) of computer-readable storage media include: an electrical connection with one or more wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination thereof. In this document, a computer-readable storage medium may be any tangible medium containing or storing a program that may be used by or in conjunction with an instruction execution system, device, or device.

[0140] Computer-readable signal media may include a data signal propagated in baseband or as part of a carrier wave, which carries a computer-readable program code. Such propagated data signals may take a variety of forms, including, but not limited to, electromagnetic signals, optical signals, or any suitable combination of the above. Computer-readable signal media may also be any computer-readable medium other than a computer-readable storage medium, which may send, propagate, or transmit a program for use by or in conjunction with an instruction execution system, apparatus, or device.

[0141] Program code embodied on a computer readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing.

[0142] Computer program code for performing the operations of the present invention may be written in one or more programming languages ​​or a combination thereof, including object-oriented programming languages ​​such as Java, Smalltalk, C++, and conventional procedural programming languages ​​such as "C" or similar programming languages. The program code may be executed entirely on the user's computer, partially on the user's computer, as a separate software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any type of network, including a local area network (LAN) or a wide area network (WAN), or may be connected to an external computer (e.g., via the Internet using an Internet service provider).

[0143] Embodiment six:

[0144] In an exemplary embodiment, an application product is also provided, including one or more instructions, which can be executed by the processor 351 of the above-mentioned device to complete the above-mentioned combined power replacement method compatible with high and low voltage platforms.

[0145] Although the embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the specification and the embodiments. It can be fully applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily realized. Therefore, without departing from the general concept defined by the claims and equivalent scope, the present invention is not limited to the specific details and the illustrations shown and described here.

Claims

1. A combined power exchange system compatible with high and low voltage platforms, characterized in that: It includes a power battery, a high-voltage connector and a high-voltage distribution box arranged on the vehicle body floor, the power battery includes a first battery group, a second battery group, a third battery group and a fourth battery group respectively, the high-voltage distribution box includes a high-voltage control box electrically connected to the positive electrode of the second battery group and the negative electrode of the fourth battery group through a high-voltage wiring harness respectively, the negative electrode of the second battery group and the positive electrode of the fourth battery group are electrically connected to the positive electrode of the first battery group and the negative electrode of the third battery group through a high-voltage wiring harness respectively, the negative electrode of the first battery group and the positive electrode of the third battery group are electrically connected to the two ends of the first relay through a high-voltage wiring harness respectively, the two ends of the first relay are electrically connected to one end of the second relay and the third relay through a high-voltage wiring harness respectively, the other ends of the second relay and the third relay are electrically connected to the high-voltage control box through a high-voltage wiring harness respectively, and the positive and negative electrodes of the high-voltage distribution box are electrically connected to the electrical system of the whole vehicle through a high-voltage wiring harness respectively.

2. A combined power exchange method compatible with high and low voltage platforms, applied to a combined power exchange system compatible with high and low voltage platforms as claimed in claim 1, characterized in that: include: After receiving the battery swap command sent by the driver, the vehicle forced power-off judgment strategy is executed according to the battery swap command until the vehicle enters the battery swap station; Execute the battery swap process matching strategy to determine the corresponding battery swap mode, and execute the battery swap control strategy according to the battery swap mode until the battery swap is completed; Perform a battery self-check and execute the judgment to release the maximum output power strategy until the vehicle leaves the battery replacement area.

3. A combined power replacement method compatible with high and low voltage platforms according to claim 2, characterized in that: The battery swap instruction executes the vehicle forced power-off judgment strategy until the vehicle enters the battery swap station, including: According to the battery swap command, determine whether the distance between the vehicle and the battery swap station is less than 5m: Yes, proceed to the next step; No, re-judge; Determine whether the battery swap vehicle's deadweight is less than 1.5 tons: Yes, the electric vehicle battery management system (BMS) limits the maximum output power of the power battery to 5kw and the maximum speed of the vehicle to no more than 5km / h; No, the electric vehicle battery management system (BMS) limits the maximum output power of the power battery to 8kw and the maximum speed of the vehicle to no more than 5km / h; When the distance between the vehicle and the battery swap station is less than 1m, determine whether the distance between the battery swap vehicle and the battery swap station is within the battery swap station: Yes, the vehicle is forced to power off; No, re-judge.

4. A combined power replacement method compatible with high and low voltage platforms according to claim 3, characterized in that: The battery replacement process matching strategy includes: Get the vehicle power supply mode to determine whether it is 800V; Yes, proceed to the next step; No, implement the 400V battery replacement matching strategy; Get the battery replacement plan sent by the driver to determine whether it is a long-range battery replacement plan: Yes, the power battery cell voltage is greater than 3.9V, and the battery replacement mode is mode 1; No, the power battery cell voltage is between 3.5V-3.9V, and the battery replacement mode is mode 2.

5. A combined power replacement method compatible with high and low voltage platforms according to claim 4, characterized in that: The 400V battery replacement matching strategy includes: Get the battery replacement plan sent by the driver to determine whether it is a long-range battery replacement plan: Yes, the voltage of the power battery cell is greater than 3.9V, and the battery replacement mode is mode 3; If no, proceed to the next step; Get the battery replacement plan sent by the driver to determine whether it is a regular battery replacement plan: Yes, the voltage of the power battery cell is greater than 3.5V-3.9V, and the battery replacement mode is mode 4; If no, proceed to the next step; Get the battery replacement plan sent by the driver to determine whether it is a short-range battery replacement plan: Yes, the voltage of the power battery cell is greater than 3.9V, and the battery replacement mode is mode 5; No, the power battery cell voltage is greater than 3.5V-3.9V, and the battery replacement mode is mode six.

6. A combined power replacement method compatible with high and low voltage platforms according to claim 4, characterized in that: The mode one is to use four ternary battery cell 200V standard battery packs in series to provide power input for 800V platform vehicles, the mode two is to use four iron-lithium battery cell 200V standard battery packs in series to provide power input for 800V platform vehicles, the mode three is to use any two of the four ternary battery cell 200V standard battery packs in parallel and the other two in series to provide power input for 400V platform vehicles, the mode four is to use any two of the four iron-lithium battery cell 200V standard battery packs in parallel and the other two in series to provide power input for 400V platform vehicles, the mode five is to use two ternary battery cell 200V standard battery packs in series to provide power input for 400V platform vehicles, and the mode six is ​​to use two iron-lithium battery cell 200V standard battery packs in series to provide power input for 400V platform vehicles.

7. A combined power replacement method compatible with high and low voltage platforms according to claim 6, characterized in that: Executing a battery swap control strategy according to the battery swap mode includes: When the battery swap mode is mode 1 or mode 2, the battery swap control strategy includes: the first relay is closed, and the second relay and the third relay are disconnected; When the battery swap mode is mode 3 or mode 4, the battery swap control strategy includes: the first relay, the second relay, and the third relay are all closed; When the battery replacement mode is mode five and mode six, the battery replacement control strategy includes: the second relay is closed, and the first relay and the third relay are disconnected.

8. A combined power replacement method compatible with high and low voltage platforms according to claim 7, characterized in that: The determining of releasing the maximum output power strategy includes: The electric vehicle battery management system BMS allows power on and continues to limit the maximum output power of the corresponding power battery, and determines whether the distance between the vehicle and the battery swap station is greater than or equal to 5m: Yes, the electric vehicle battery management system BMS releases the restriction on the maximum output power of the corresponding power battery, and the vehicle runs normally; No, re-judge.

9. A combined power exchange device compatible with high and low voltage platforms, characterized in that: include: A first judgment module is used to, after receiving a battery swap instruction sent by the driver, execute a vehicle forced power-off judgment strategy according to the battery swap instruction until the vehicle enters the battery swap station; The second judgment module is used to execute the battery swap process matching strategy to determine the corresponding battery swap mode, and execute the battery swap control strategy according to the battery swap mode until the battery swap is completed; The third judgment module is used to perform battery self-check and execute judgment to release the maximum output power strategy until the vehicle leaves the battery replacement area.

10. A vehicle, characterized in that: include: processor; a memory for storing processor-executable instructions; Wherein, the processor is configured to execute the steps of the control method of the closed-loop braking energy recovery function of the new energy vehicle model as described in any one of claims 2 to 8.

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