Energy supply equipment output power control method and device and hydrogen energy driven vehicle

Abstract

The invention discloses an energy supply equipment output power control method and device and a hydrogen energy driven vehicle. The method comprises the steps that real-time voltage parameters for driving energy supply equipment are obtained; the driving energy supply equipment is used for supplying energy to driving working equipment of energy supply object equipment corresponding to target energy supply equipment; according to the real-time voltage parameter and a preset voltage threshold parameter, determining a voltage abnormity judgment result corresponding to the driving energy supply equipment; determining energy supply output power corresponding to the target energy supply equipment according to the voltage abnormity judgment result; generating an energy supply control instruction corresponding to the energy supply output power; the energy supply control instruction is used for controlling the target energy supply equipment to supply energy to the driving energy supply equipment at the energy supply output power. According to the invention, the relation between the real-time voltage for driving the energy supply equipment and the preset voltage threshold value is fully considered to correspondingly adjust the energy supply output power of the energy supply equipment, and the overvoltage fault condition of the energy supply equipment can be reduced.

Description

Technical Field

[0001] The present invention relates to the field of energy supply equipment control technology, and in particular to an energy supply equipment output power control method and device, and a hydrogen-powered vehicle. Background Art

[0002] In the architecture of some devices, a core energy supply device is set up to supply power to the driving energy supply device. However, the energy management of the energy supply target device corresponding to the energy supply device relies on the percentage of power of the driving energy supply device (SOC) and the overall power demand of the energy supply target device as the basis for the power request of the energy supply device. When the SOC is inaccurate, it is easy for the SOC to be low but the voltage of the driving energy supply device to be high, which will cause the recharge power of the driving energy supply device to be too large, causing the driving energy supply device to be overvoltage. The energy supply device outputs high power only when it is judged that the SOC is low. In this way, when the driving working device in the energy supply target device performs braking feedback, the feedback power of the driving working device plus the output power of the energy supply device are added to the power supply device to supply power to the driving energy supply device. The transient voltage of the driving energy supply device is likely to exceed the voltage alarm threshold to trigger an overvoltage fault. In extreme cases, it will also cause the energy supply target device to fail to operate normally. It can be seen that the existing technology has defects that need to be solved urgently. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a method and device for controlling the output power of an energy supply device and a hydrogen-powered vehicle, which can fully consider the relationship between the real-time voltage of the driving energy supply device and the preset voltage threshold to adjust the energy supply output power of the energy supply device accordingly, so as to effectively control the reasonable power output of the energy supply device and reduce or even eliminate the occurrence of overvoltage faults in the driving energy supply device.

[0004] In order to solve the above technical problems, the first aspect of the present invention discloses a method for controlling the output power of an energy supply device, the method comprising:

[0005] Acquiring real-time voltage parameters of a driving energy supply device; the driving energy supply device is used to supply energy to a driving working device of an energy supply object device corresponding to the target energy supply device;

[0006] Determining a voltage abnormality judgment result corresponding to the driving energy supply device according to the real-time voltage parameter and the preset voltage threshold parameter;

[0007] Determining the energy supply output power corresponding to the target energy supply device according to the voltage abnormality judgment result;

[0008] Generate an energy supply control instruction corresponding to the energy supply output power; the energy supply control instruction is used to control the target energy supply device to supply energy to the driving energy supply device with the energy supply output power.

[0009] As an optional embodiment, in the first aspect of the present invention, the target energy supply device is a hydrogen fuel cell; and / or, the energy supply object device is a vehicle; and / or, the driving working device includes a driving motor; and / or, the driving energy supply device is a battery; and / or, the real-time voltage parameters include the current single cell voltage and the current total battery voltage; the current single cell voltage is the maximum single cell voltage.

[0010] As an optional embodiment, in the first aspect of the present invention, determining the voltage abnormality judgment result corresponding to the driving energy supply device according to the real-time voltage parameter and the preset voltage threshold parameter includes:

[0011] Determining an overvoltage threshold corresponding to the drive energy supply device;

[0012] Determining a limiting voltage threshold according to the overvoltage threshold;

[0013] It is determined whether the real-time voltage parameter is greater than or equal to the limit voltage threshold to obtain a first voltage abnormality determination result.

[0014] As an optional embodiment, in the first aspect of the present invention, the overvoltage threshold includes a single cell overvoltage threshold and a total battery overvoltage threshold; the limit voltage threshold includes a single cell limit voltage threshold and a total battery limit voltage threshold; and determining the overvoltage threshold corresponding to the driving energy supply device includes:

[0015] Obtaining a single cell test overvoltage threshold and a total battery test overvoltage threshold corresponding to the drive energy supply device;

[0016] Calculating the product of the single-cell test overvoltage threshold and the overvoltage fault coefficient to obtain the single-cell overvoltage threshold;

[0017] Calculating the product of the total battery test overvoltage threshold and the overvoltage fault coefficient to obtain the total battery overvoltage threshold;

[0018] Furthermore, determining the limiting voltage threshold according to the overvoltage threshold includes:

[0019] Calculating the product of the single cell overvoltage threshold and the limiting fault coefficient to obtain a single cell limiting voltage threshold;

[0020] Calculating the product of the total battery overvoltage threshold and the limit fault coefficient to obtain the total battery limit voltage threshold;

[0021] Furthermore, determining whether the real-time voltage parameter is greater than or equal to the limit voltage threshold to obtain a first voltage abnormality determination result includes:

[0022] It is determined whether the current single cell voltage is greater than or equal to the single cell limit voltage threshold, or whether the current total battery voltage is greater than or equal to the total battery limit voltage threshold, to obtain a first voltage abnormality determination result.

[0023] As an optional implementation manner, in the first aspect of the present invention, determining the energy supply output power corresponding to the target energy supply device according to the voltage abnormality judgment result includes:

[0024] When the first voltage abnormality judgment result is yes, determining that the energy supply output power corresponding to the target energy supply device is a first power value; the first power value is inversely proportional to the current single cell voltage and / or the current total battery voltage;

[0025] When the result of the first voltage abnormality judgment is no, the energy supply output power corresponding to the target energy supply device is not adjusted.

[0026] As an optional implementation manner, in the first aspect of the present invention, when the result of the first voltage abnormality judgment is yes, the method further includes:

[0027] determining whether the current single cell voltage is greater than or equal to the single cell overvoltage threshold, or whether the current total battery voltage is greater than or equal to the total battery overvoltage threshold, to obtain a second voltage abnormality determination result;

[0028] According to the second voltage abnormality judgment result, the energy supply output power corresponding to the target energy supply equipment is determined.

[0029] As an optional embodiment, in the first aspect of the present invention, the energy supply output power corresponding to the target energy supply device is determined according to the second voltage abnormality judgment result, including:

[0030] When the second voltage abnormality judgment result is yes, determining that the energy supply output power corresponding to the target energy supply device is 0;

[0031] When the second voltage abnormality judgment result is no, the energy supply output power corresponding to the target energy supply device is determined to be a second power value; the second power value is inversely proportional to the current single cell voltage and / or the current total battery voltage.

[0032] A second aspect of the present invention discloses an output power control device for energy supply equipment, the device comprising:

[0033] An acquisition module, configured to acquire real-time voltage parameters of a driving energy supply device; the driving energy supply device is configured to supply energy to a driving working device of an energy supply object device corresponding to the target energy supply device;

[0034] A judgment result determination module, configured to determine a voltage abnormality judgment result corresponding to the drive energy supply device based on the real-time voltage parameter and a preset voltage threshold parameter;

[0035] An energy supply output power determination module is used to determine the energy supply output power corresponding to the target energy supply device according to the voltage abnormality judgment result;

[0036] A generation module is used to generate an energy supply control instruction corresponding to the energy supply output power; the energy supply control instruction is used to control the target energy supply device to supply energy to the driving energy supply device with the energy supply output power.

[0037] As an optional embodiment, in the second aspect of the present invention, the target energy supply device is a hydrogen fuel cell; and / or, the energy supply object device is a vehicle; and / or, the driving working device includes a driving motor; and / or, the driving energy supply device is a battery; and / or, the real-time voltage parameters include the current single cell voltage and the current total battery voltage; the current single cell voltage is the maximum single cell voltage.

[0038] As an optional embodiment, in the second aspect of the present invention, the judgment result determination module determines the voltage abnormality judgment result corresponding to the drive energy supply device according to the real-time voltage parameter and the preset voltage threshold parameter, including:

[0039] Determining an overvoltage threshold corresponding to the drive energy supply device;

[0040] Determining a limiting voltage threshold according to the overvoltage threshold;

[0041] It is determined whether the real-time voltage parameter is greater than or equal to the limit voltage threshold to obtain a first voltage abnormality determination result.

[0042] As an optional embodiment, in the second aspect of the present invention, the overvoltage threshold includes a single cell overvoltage threshold and a total battery overvoltage threshold; the limit voltage threshold includes a single cell limit voltage threshold and a total battery limit voltage threshold; and the judgment result determination module determines the overvoltage threshold corresponding to the drive energy supply device, including:

[0043] Obtaining a single cell test overvoltage threshold and a total battery test overvoltage threshold corresponding to the drive energy supply device;

[0044] Calculating the product of the single-cell test overvoltage threshold and the overvoltage fault coefficient to obtain the single-cell overvoltage threshold;

[0045] Calculating the product of the total battery test overvoltage threshold and the overvoltage fault coefficient to obtain the total battery overvoltage threshold;

[0046] Furthermore, the judgment result determination module determines a limiting voltage threshold according to the overvoltage threshold, including:

[0047] Calculating the product of the single cell overvoltage threshold and the limiting fault coefficient to obtain a single cell limiting voltage threshold;

[0048] Calculating the product of the total battery overvoltage threshold and the limit fault coefficient to obtain the total battery limit voltage threshold;

[0049] Furthermore, the judgment result determination module judges whether the real-time voltage parameter is greater than or equal to the limit voltage threshold, and obtains a first voltage abnormality judgment result, including:

[0050] It is determined whether the current single cell voltage is greater than or equal to the single cell limit voltage threshold, or whether the current total battery voltage is greater than or equal to the total battery limit voltage threshold, to obtain a first voltage abnormality determination result.

[0051] As an optional implementation manner, in the second aspect of the present invention, the energy supply output power determination module determines the energy supply output power corresponding to the target energy supply device according to the voltage abnormality judgment result, including:

[0052] When the first voltage abnormality judgment result is yes, determining that the energy supply output power corresponding to the target energy supply device is a first power value; the first power value is inversely proportional to the current single cell voltage and / or the current total battery voltage;

[0053] When the result of the first voltage abnormality judgment is no, the energy supply output power corresponding to the target energy supply device is not adjusted.

[0054] As an optional implementation manner, in the second aspect of the present invention, when the result of the first voltage abnormality judgment is yes, the method further includes:

[0055] determining whether the current single cell voltage is greater than or equal to the single cell limit voltage threshold, or whether the current total battery voltage is greater than or equal to the total battery limit voltage threshold, to obtain a second voltage abnormality determination result;

[0056] Determining the energy supply output power corresponding to the target energy supply device according to the second voltage abnormality judgment result;

[0057] As an optional embodiment, in the second aspect of the present invention, the energy supply output power determination module determines the energy supply output power corresponding to the target energy supply device according to the second voltage abnormality judgment result, including

[0058] When the second voltage abnormality judgment result is yes, determining that the energy supply output power corresponding to the target energy supply device is 0;

[0059] When the second voltage abnormality judgment result is no, the energy supply output power corresponding to the target energy supply device is determined to be a second power value; the second power value is inversely proportional to the current single cell voltage and / or the current total battery voltage.

[0060] A third aspect of the present invention discloses another device for controlling output power of an energy supply device, the device comprising:

[0061] a memory storing executable program code;

[0062] a processor coupled to the memory;

[0063] The processor calls the executable program code stored in the memory to execute part or all of the steps in the energy supply equipment output power control method disclosed in the first aspect of the present invention.

[0064] The fourth aspect of the present invention discloses a hydrogen-powered vehicle, which includes a hydrogen fuel energy supply device for supplying energy, a driving energy supply device connected to the hydrogen fuel energy supply device, and a driving working device connected to the hydrogen fuel energy supply device and the driving energy supply device; the hydrogen-powered vehicle controls the hydrogen fuel energy supply device through the energy supply device output power control method disclosed in the first aspect of the present invention.

[0065] Compared with the prior art, the embodiments of the present invention have the following beneficial effects: It can be seen that the present invention can determine the voltage abnormality judgment result corresponding to the driving energy supply device by comparing the real-time voltage parameter with the preset voltage threshold parameter, and determine the energy supply output power of the energy supply device according to the obtained voltage abnormality judgment result, so as to fully consider the relationship between the real-time voltage of the driving energy supply device and the preset voltage threshold to adjust the energy supply output power of the energy supply device accordingly, so as to effectively control the reasonable power output of the energy supply device, and can reduce or even eliminate the occurrence of overvoltage faults in the driving energy supply device. BRIEF DESCRIPTION OF THE DRAWINGS

[0066] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0067] Figure 1 This is a flow chart of a method for controlling output power of an energy supply device disclosed in an embodiment of the present invention;

[0068] Figure 2This is a schematic structural diagram of an output power control device for energy supply equipment disclosed in an embodiment of the present invention;

[0069] Figure 3 It is a structural diagram of another output power control device for energy supply equipment disclosed in an embodiment of the present invention;

[0070] Figure 4 This is a logic block diagram for controlling the output power of a hydrogen fuel cell in a method for controlling the output power of an energy supply device disclosed in an embodiment of the present invention;

[0071] Figure 5 It is a logic block diagram for controlling the braking feedback power of a drive motor, which can cooperate with an energy control method for a drive energy supply device disclosed in an embodiment of the present invention. DETAILED DESCRIPTION

[0072] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0073] The terms "first," "second," and so on, in the description and claims of the present invention and the accompanying drawings are used to distinguish between different items, not to describe a specific order. Furthermore, the terms "including," "having," and any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, apparatus, product, or end comprising a series of steps or elements is not limited to the listed steps or elements but may optionally include steps or elements not listed therein, or may optionally include other steps or elements inherent to such process, method, product, or end.

[0074] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present invention. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute a separate or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0075] The present invention discloses a method and device for controlling the output power of an energy supply device, as well as a hydrogen-powered vehicle. These methods can determine a voltage anomaly judgment result corresponding to a driving energy supply device by comparing a real-time voltage parameter with a preset voltage threshold parameter, and then determine the energy supply output power of the energy supply device based on the obtained voltage anomaly judgment result. This method and device can fully consider the relationship between the real-time voltage of the driving energy supply device and the preset voltage threshold to adjust the energy supply output power accordingly, effectively controlling the reasonable power output of the energy supply device and reducing or even eliminating the occurrence of overvoltage faults in the driving energy supply device. These methods are described in detail below.

[0076] Example 1

[0077] See also Figure 1 , Figure 1 This is a flow chart of a method for controlling the output power of an energy supply device disclosed in an embodiment of the present invention. Figure 1 The described method for controlling the output power of the energy supply device is applied to a data processing chip, a processing terminal or a processing server, and the processing server can be a local server or a cloud server, which is not limited in the embodiment of the present invention. Figure 1 As shown, the method for controlling the output power of the energy supply device may include the following operations:

[0078] 101. Obtain real-time voltage parameters of the drive power supply device.

[0079] Specifically, the driving energy supply device is used to supply energy to the driving working device of the energy supply object device corresponding to the target energy supply device. The driving energy supply device provides energy to the driving working device, and its energy is supplied by the target energy supply device.

[0080] Optionally, the driving working device includes a motor, and optionally, the driving energy supply device is a battery.

[0081] Optionally, the real-time voltage parameter includes the current cell voltage and the current total battery voltage. Optionally, the real-time voltage parameter can be directly acquired or detected by a controller driving the energy supply device.

[0082] Optionally, the target energy supply device is a hydrogen fuel cell. Optionally, the energy supply target device is a vehicle, such as an electric family car or a hydrogen-powered commercial truck.

[0083] 102. Determine a voltage anomaly judgment result corresponding to the driving energy supply device based on the real-time voltage parameter and the preset voltage threshold parameter.

[0084] 103. Determine the energy supply output power corresponding to the target energy supply equipment based on the voltage anomaly judgment result.

[0085] 104. Generate an energy supply control instruction corresponding to the energy supply output power.

[0086] Specifically, the energy supply control instruction is used to control the target energy supply device to drive the energy supply device to perform energy supply work with the energy output power.

[0087] It can be seen that the above-mentioned embodiment of the invention can determine the voltage abnormality judgment result corresponding to the driving energy supply device by comparing the real-time voltage parameter with the preset voltage threshold parameter, and determine the energy supply output power of the energy supply device based on the obtained voltage abnormality judgment result, so as to fully consider the relationship between the real-time voltage of the driving energy supply device and the preset voltage threshold to adjust the energy supply output power of the energy supply device accordingly, so as to effectively control the reasonable power output of the energy supply device, and can reduce or even eliminate the occurrence of overvoltage faults in the driving energy supply device.

[0088] As an optional embodiment, in the above steps, determining the voltage abnormality judgment result corresponding to the driving energy supply device according to the real-time voltage parameter and the preset voltage threshold parameter includes:

[0089] Determine the overvoltage threshold corresponding to the drive power supply device;

[0090] Determining a limiting voltage threshold according to an overvoltage voltage threshold;

[0091] It is determined whether the real-time voltage parameter is greater than or equal to the limit voltage threshold to obtain a first voltage abnormality determination result.

[0092] Through the above embodiment, the limiting voltage threshold can be determined by the overvoltage voltage threshold, and the real-time voltage parameter can be compared with the limiting voltage threshold to obtain a first voltage abnormality judgment result, and the energy output power of the target energy supply device can be determined based on the first voltage abnormality judgment result, so that the voltage of the driving energy supply device can be maintained at a relatively reasonable level in advance, avoiding the problem of overvoltage fault caused by excessive voltage of the driving energy supply device.

[0093] As an optional embodiment, in the above steps, the overvoltage threshold includes a single cell overvoltage threshold and a total battery overvoltage threshold; the limit voltage threshold includes a single cell limit voltage threshold and a total battery limit voltage threshold; and determining the overvoltage threshold corresponding to the driving energy supply device includes:

[0094] Obtain the single cell test overvoltage threshold and total battery test overvoltage threshold corresponding to the drive energy supply device;

[0095] Calculate the product of the single-cell test overvoltage threshold and the overvoltage fault coefficient to obtain the single-cell overvoltage threshold;

[0096] Calculate the product of the total battery test overvoltage threshold and the overvoltage fault coefficient to obtain the total battery overvoltage threshold;

[0097] And, determining a limiting voltage threshold according to the overvoltage threshold, comprising:

[0098] Calculate the product of the single cell overvoltage threshold and the limiting fault coefficient to obtain the single cell limiting voltage threshold;

[0099] Calculate the product of the total battery overvoltage threshold and the limit fault coefficient to obtain the total battery limit voltage threshold;

[0100] And, determining whether the real-time voltage parameter is greater than or equal to the limit voltage threshold to obtain a first voltage abnormality determination result, including:

[0101] It is determined whether the current cell voltage is greater than or equal to the cell limit voltage threshold, or whether the current total battery voltage is greater than or equal to the total battery limit voltage threshold, to obtain a first voltage abnormality determination result.

[0102] Optionally, the overvoltage thresholds for single-cell and total battery tests can be confirmed by personnel through the technical agreement for driving the energy supply equipment. Optionally, the overvoltage failure coefficient is obtained through calibration testing of the energy supply target equipment, and its value range is 0.86 to 0.96. Optionally, the limit failure coefficient is obtained through calibration testing of the energy supply target equipment, and its value range is 0.88 to 0.98.

[0103] Through the above embodiment, the single cell overvoltage threshold and the total battery overvoltage threshold are first obtained by multiplying the single cell test overvoltage threshold and the total battery test overvoltage threshold respectively according to the overvoltage fault coefficient. The function of this threshold is to serve as a judgment standard for whether the current real-time voltage will cause the driving energy supply device to produce an overvoltage fault; then, the single cell limit voltage threshold and the total battery limit voltage threshold are obtained by multiplying the single cell overvoltage threshold and the total battery overvoltage threshold respectively according to the limit fault coefficient. By comparing the current single cell voltage with the single cell limit voltage threshold, and comparing the current total battery voltage with the total battery limit voltage threshold, the current single cell voltage and the current total battery voltage can be judged in advance to achieve the purpose of controlling the energy supply output power of the target energy supply device in advance, thereby avoiding the problem of overvoltage fault of the driving energy supply battery due to excessive energy output power of the target energy supply device.

[0104] As an optional embodiment, in the above step, determining the energy supply output power corresponding to the target energy supply device according to the voltage abnormality judgment result includes:

[0105] When the first voltage abnormality judgment result is yes, determining that the energy supply output power corresponding to the target energy supply device is a first power value; the first power value is inversely proportional to the current single cell voltage and / or the current total battery voltage;

[0106] When the result of the first voltage abnormality judgment is no, the energy supply output power corresponding to the target energy supply device is not adjusted.

[0107] Through the above embodiment, when the result of the first voltage abnormality judgment is yes, the output power corresponding to the target energy supply equipment can be limited in time, thereby avoiding the problem of overvoltage failure of the driving energy supply battery due to the energy output power of the target energy supply equipment being continuously at a high level, and effectively providing protection for the driving energy supply equipment.

[0108] As an optional embodiment, in the above steps, when the result of determining whether the first voltage is abnormal is yes, the method further includes:

[0109] Determine whether the current single cell voltage is greater than or equal to the single cell overvoltage threshold, or whether the current total battery voltage is greater than or equal to the total battery overvoltage threshold, to obtain a second voltage abnormality determination result;

[0110] According to the second voltage abnormality judgment result, the energy supply output power corresponding to the target energy supply equipment is determined.

[0111] Through the above embodiments, by comparing the current single cell voltage with the single cell overvoltage threshold, and comparing the current total battery voltage with the total battery overvoltage threshold, it is possible to judge in advance whether the current single cell voltage and the current total battery voltage will trigger an overvoltage fault, so as to achieve the purpose of timely controlling the energy output power of the target energy supply equipment, thereby avoiding the problem of overvoltage fault of the driving energy supply battery due to excessive energy output power of the target energy supply equipment.

[0112] As an optional embodiment, in the above steps, determining the energy output power corresponding to the target energy supply device according to the second voltage abnormality judgment result includes:

[0113] When the second voltage abnormality judgment result is yes, determining that the energy supply output power corresponding to the target energy supply device is 0;

[0114] When the second voltage abnormality judgment result is no, the energy supply output power corresponding to the target energy supply device is determined to be a second power value; the second power value is inversely proportional to the current single cell voltage and / or the current total battery voltage.

[0115] Through the above embodiment, when the second voltage abnormality judgment result is yes, the target energy supply device can be stopped from outputting power in time, thereby avoiding the problem that the driving energy supply device itself is already on the verge of overvoltage failure, but the target energy supply device still outputs power to the driving energy supply device, causing the driving energy supply device to have an overvoltage failure; when the second voltage abnormality judgment result is no, because the current single cell voltage and the current total battery voltage corresponding to the driving energy supply device are already relatively large at this time, in this case, the energy output power of the target energy supply device is further restricted, thereby avoiding the problem that the current single cell voltage and the current total battery voltage corresponding to the driving energy supply device continue to increase, causing the driving energy supply device to have an overvoltage failure, thereby effectively providing protection for the driving energy supply device.

[0116] The beneficial effects of the present invention are described below by applying the solution of the present invention to a hydrogen fuel-powered vehicle.

[0117] In a mature drive architecture for hydrogen fuel cell-powered vehicles, a hydrogen fuel cell is used to supply energy to the power battery, which in turn supplies energy to the drive motor. When the vehicle brakes, the drive motor also supplies energy to the power battery through brake feedback. However, currently available hydrogen fuel cell-powered vehicles usually control the power output of the hydrogen fuel cell by judging the SOC and the power demand of the vehicle. If the SOC is small or the power demand is large, the hydrogen fuel cell is controlled to output high power. When the power battery triggers a slight overvoltage fault warning, the power battery management system will send the maximum allowable charging power to the vehicle controller, and the vehicle controller will then limit the stack power request and motor feedback power based on this power. The above technical solution works better when the SOC is accurate, but after comparing actual operating data, hydrogen fuel cell-powered vehicles are more likely to have inaccurate SOC than pure electric vehicles, because most power batteries require constant current charging or discharging when calibrating the SOC, and even require an external charging gun to fully charge before calibration. Since pure electric vehicles can only be charged through external charging piles, the SOC can be calibrated during charging; however, in actual use, hydrogen fuel cell-driven vehicles basically rely on the power output of the fuel cell for replenishment, and the replenishment is basically dynamic. The charging and discharging current cannot be kept constant for a long time. As a result, the SOC is prone to inaccurate after the vehicle has been in operation for a period of time. When the SOC is inaccurate, it is easy to cause the power battery to recharge too much and cause power battery overvoltage. This is because when the SOC is inaccurate, it is easy for the SOC to be low but the power battery voltage to be high. Only when the SOC is judged to be low, the fuel cell will output high power. In this way, when the vehicle performs drive motor braking feedback, the drive motor feedback power plus the hydrogen fuel cell output power supply energy to charge the power battery. The drive battery transient voltage is likely to exceed the power battery voltage alarm threshold, thereby triggering a power battery overvoltage fault. In extreme cases, it will also cause the vehicle to lose power.

[0118] When the solution of the present invention is applied to a hydrogen fuel-powered vehicle, refer to Figure 4 , the output power of the hydrogen fuel cell to the power battery can be controlled through the relationship between the real-time voltage parameters of the power battery and the preset voltage threshold, and the power battery voltage can be maintained at a relatively reasonable level in advance, leaving enough margin for the vehicle to drive the motor braking feedback; refer to Figure 5 At the same time, the feedback power of the drive motor to the power battery is controlled through the relationship between the real-time voltage parameters of the power battery, the preset voltage threshold and the preset power threshold, so that the braking recharging power is within the acceptable range of the power battery; at the same time, by controlling the output power of the hydrogen fuel cell to the power battery and controlling the feedback power of the drive motor to the power battery, the overvoltage problem of the power battery can be handled from two aspects at the same time. The two solutions complement and cooperate with each other, which can effectively avoid the safety and reliability of the driving energy supply equipment, and at the same time can effectively balance the overall energy flow of the energy supply target equipment, thereby improving practicality and economy.

[0119] Example 2

[0120] See also Figure 2 , Figure 2 This is a schematic diagram of the structure of an output power control device for energy supply equipment disclosed in an embodiment of the present invention. Figure 2 The described power supply device output power control device is applied to a data processing chip, a processing terminal or a processing server, and the processing server can be a local server or a cloud server, which is not limited in the embodiment of the present invention. Figure 2 As shown, the output power control device of the energy supply device may include the following operations:

[0121] The acquisition module 201 is used to acquire real-time voltage parameters of the driving energy supply device.

[0122] Specifically, the driving energy supply device is used to supply energy to the driving working device of the energy supply object device corresponding to the target energy supply device. The driving energy supply device provides energy to the driving working device, and its energy is supplied by the target energy supply device.

[0123] Optionally, the driving working device includes a motor, and optionally, the driving energy supply device is a battery.

[0124] Optionally, the real-time voltage parameter includes the current cell voltage and the current total battery voltage. Optionally, the real-time voltage parameter can be directly acquired or detected by a controller driving the energy supply device.

[0125] Optionally, the target energy supply device is a hydrogen fuel cell. Optionally, the energy supply target device is a vehicle, such as an electric family car or a hydrogen-powered commercial truck.

[0126] The judgment result determination module 202 is used to determine the voltage abnormality judgment result corresponding to the driving energy supply device according to the real-time voltage parameter and the preset voltage threshold parameter.

[0127] The energy supply output power determination module 203 is used to determine the energy supply output power corresponding to the target energy supply equipment according to the voltage abnormality judgment result.

[0128] The generating module 204 is configured to generate an energy supply control instruction corresponding to the energy supply output power.

[0129] Specifically, the energy supply control instruction is used to control the target energy supply device to drive the energy supply device to perform energy supply work with the energy output power.

[0130] It can be seen that the above-mentioned embodiment of the invention can determine the voltage abnormality judgment result corresponding to the driving energy supply device by comparing the real-time voltage parameter with the preset voltage threshold parameter, and determine the energy supply output power of the energy supply device based on the obtained voltage abnormality judgment result, so as to fully consider the relationship between the real-time voltage of the driving energy supply device and the preset voltage threshold to adjust the energy supply output power of the energy supply device accordingly, so as to effectively control the reasonable power output of the energy supply device, and can reduce or even eliminate the occurrence of overvoltage faults in the driving energy supply device.

[0131] As an optional embodiment, the judgment result determination module 202 determines the voltage abnormality judgment result corresponding to the driving energy supply device according to the real-time voltage parameter and the preset voltage threshold parameter, including:

[0132] Determine the overvoltage threshold corresponding to the drive power supply device;

[0133] Determining a limiting voltage threshold according to an overvoltage voltage threshold;

[0134] It is determined whether the real-time voltage parameter is greater than or equal to the limit voltage threshold to obtain a first voltage abnormality determination result.

[0135] Through the above embodiment, the limiting voltage threshold can be determined by the overvoltage voltage threshold, and the real-time voltage parameter can be compared with the limiting voltage threshold to obtain a first voltage abnormality judgment result, and the energy output power of the target energy supply device can be determined based on the first voltage abnormality judgment result, so that the voltage of the driving energy supply device can be maintained at a relatively reasonable level in advance, avoiding the problem of overvoltage fault caused by excessive voltage of the driving energy supply device.

[0136] As an optional embodiment, the overvoltage threshold includes a single cell overvoltage threshold and a total battery overvoltage threshold; the limit voltage threshold includes a single cell limit voltage threshold and a total battery limit voltage threshold; and the judgment result determination module 202 determines the overvoltage threshold corresponding to the driving energy supply device, including:

[0137] Obtain the single cell test overvoltage threshold and total battery test overvoltage threshold corresponding to the drive energy supply device;

[0138] Calculate the product of the single-cell test overvoltage threshold and the overvoltage fault coefficient to obtain the single-cell overvoltage threshold;

[0139] Calculate the product of the total battery test overvoltage threshold and the overvoltage fault coefficient to obtain the total battery overvoltage threshold;

[0140] Furthermore, the judgment result determination module 202 determines the limiting voltage threshold according to the overvoltage threshold, including:

[0141] Calculate the product of the single cell overvoltage threshold and the limiting fault coefficient to obtain the single cell limiting voltage threshold;

[0142] Calculate the product of the total battery overvoltage threshold and the limit fault coefficient to obtain the total battery limit voltage threshold;

[0143] Furthermore, the judgment result determination module 202 judges whether the real-time voltage parameter is greater than or equal to the limit voltage threshold, and obtains a first voltage abnormality judgment result, including:

[0144] It is determined whether the current cell voltage is greater than or equal to the cell limit voltage threshold, or whether the current total battery voltage is greater than or equal to the total battery limit voltage threshold, to obtain a first voltage abnormality determination result.

[0145] Optionally, the overvoltage thresholds for single-cell and total battery tests can be confirmed by personnel through the technical agreement for driving the energy supply equipment. Optionally, the overvoltage failure coefficient is obtained through calibration testing of the energy supply target equipment, and its value range is 0.86 to 0.96. Optionally, the limit failure coefficient is obtained through calibration testing of the energy supply target equipment, and its value range is 0.88 to 0.98.

[0146] Through the above embodiment, the single cell overvoltage threshold and the total battery overvoltage threshold are first obtained by multiplying the single cell test overvoltage threshold and the total battery test overvoltage threshold respectively according to the overvoltage fault coefficient. The function of this threshold is to serve as a judgment standard for whether the current real-time voltage will cause the driving energy supply device to produce an overvoltage fault; then, the single cell limit voltage threshold and the total battery limit voltage threshold are obtained by multiplying the single cell overvoltage threshold and the total battery overvoltage threshold respectively according to the limit fault coefficient. By comparing the current single cell voltage with the single cell limit voltage threshold, and comparing the current total battery voltage with the total battery limit voltage threshold, the current single cell voltage and the current total battery voltage can be judged in advance to achieve the purpose of controlling the energy supply output power of the target energy supply device in advance, thereby avoiding the problem of overvoltage fault of the driving energy supply battery due to excessive energy output power of the target energy supply device.

[0147] As an optional embodiment, the energy supply output power determination module 203 determines the energy supply output power corresponding to the target energy supply device according to the voltage abnormality judgment result, including:

[0148] When the first voltage abnormality judgment result is yes, determining that the energy supply output power corresponding to the target energy supply device is a first power value; the first power value is inversely proportional to the current single cell voltage and / or the current total battery voltage;

[0149] When the result of the first voltage abnormality judgment is no, the energy supply output power corresponding to the target energy supply device is not adjusted.

[0150] Through the above embodiment, when the result of the first voltage abnormality judgment is yes, the output power corresponding to the target energy supply equipment can be limited in time, thereby avoiding the problem of overvoltage failure of the driving energy supply battery due to the energy output power of the target energy supply equipment being continuously at a high level, and effectively providing protection for the driving energy supply equipment.

[0151] As an optional embodiment, when the result of the first voltage abnormality judgment is yes, the method further includes:

[0152] Determine whether the current single cell voltage is greater than or equal to the single cell overvoltage threshold, or whether the current total battery voltage is greater than or equal to the total battery overvoltage threshold, to obtain a second voltage abnormality determination result;

[0153] According to the second voltage abnormality judgment result, the energy supply output power corresponding to the target energy supply equipment is determined.

[0154] Through the above embodiments, by comparing the current single cell voltage with the single cell overvoltage threshold, and comparing the current total battery voltage with the total battery overvoltage threshold, it is possible to judge in advance whether the current single cell voltage and the current total battery voltage will trigger an overvoltage fault, so as to achieve the purpose of timely controlling the energy output power of the target energy supply equipment, thereby avoiding the problem of overvoltage fault of the driving energy supply battery due to excessive energy output power of the target energy supply equipment.

[0155] As an optional embodiment, the energy supply output power determination module 203 determines the energy supply output power corresponding to the target energy supply device according to the second voltage abnormality judgment result, including

[0156] When the second voltage abnormality judgment result is yes, determining that the energy supply output power corresponding to the target energy supply device is 0;

[0157] When the second voltage abnormality judgment result is no, the energy supply output power corresponding to the target energy supply device is determined to be a second power value; the second power value is inversely proportional to the current single cell voltage and / or the current total battery voltage.

[0158] Through the above embodiment, when the second voltage abnormality judgment result is yes, the target energy supply device can be stopped from outputting power in time, thereby avoiding the problem that the driving energy supply device itself is already on the verge of overvoltage failure, but the target energy supply device still outputs power to the driving energy supply device, causing the driving energy supply device to have an overvoltage failure; when the second voltage abnormality judgment result is no, because the current single cell voltage and the current total battery voltage corresponding to the driving energy supply device are already relatively large at this time, in this case, the energy output power of the target energy supply device is further restricted, thereby avoiding the problem that the current single cell voltage and the current total battery voltage corresponding to the driving energy supply device continue to increase, causing the driving energy supply device to have an overvoltage failure, thereby effectively providing protection for the driving energy supply device.

[0159] Example 3

[0160] See also Figure 3 , Figure 3 This is another output power control device for energy supply equipment disclosed in an embodiment of the present invention. Figure 3 The described power supply device output power control device is applied to a data processing chip, a processing terminal or a processing server (wherein the processing server may be a local server or a cloud server). Figure 3 As shown, the energy supply equipment output power control device may include:

[0161] A memory 301 storing executable program code;

[0162] a processor 302 coupled to the memory 301;

[0163] The processor 302 calls the executable program code stored in the memory 301 to execute the steps of the method for controlling the output power of the energy supply device described in the first embodiment.

[0164] Example 4

[0165] An embodiment of the present invention discloses a computer-readable storage medium storing a computer program for electronic data exchange, wherein the computer program enables a computer to execute the steps of the method for controlling the output power of an energy supply device described in the first embodiment.

[0166] Example 5

[0167] An embodiment of the present invention discloses a computer program product, which includes a non-transitory computer-readable storage medium storing a computer program, and the computer program is operable to cause a computer to execute the steps of the power supply device output power control method described in the first embodiment.

[0168] Example 6

[0169] An embodiment of the present invention discloses a hydrogen-powered vehicle, comprising a hydrogen fuel energy supply device for supplying energy, a drive energy supply device connected to the hydrogen fuel energy supply device, and a drive working device connected to the hydrogen fuel energy supply device and the drive energy supply device. The hydrogen-powered vehicle controls the hydrogen fuel energy supply device using the energy supply device output power control method disclosed in the first aspect of the present invention. For the technical details of the hydrogen-powered vehicle in this embodiment, please refer to the description in the first embodiment and will not be repeated here.

[0170] The device embodiments described above are merely illustrative, wherein the modules described as separate components may or may not be physically separate, and the components shown as modules may or may not be physical modules, i.e., they may be located in one place or distributed across multiple network modules. Some or all of the modules may be selected based on actual needs to achieve the objectives of the present embodiment. Those skilled in the art can understand and implement the present invention without inventive effort.

[0171] Through the detailed description of the above embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by means of software plus the necessary general hardware platform, or of course, by means of hardware. Based on this understanding, the above technical solution, in essence, or the portion that contributes to the prior art, can be embodied in the form of a software product, which can be stored in a computer-readable storage medium, including a read-only memory (ROM), a random access memory (RAM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), a one-time programmable read-only memory (OTPROM), an electronically erasable programmable read-only memory (EEPROM), a compact disc read-only memory (CD-ROM) or other optical disc storage, magnetic disk storage, magnetic tape storage, or any other computer-readable medium capable of carrying or storing data.

[0172] Finally, it should be noted that the method and device for controlling the output power of an energy supply device and the hydrogen-powered vehicle disclosed in the embodiments of the present invention are only preferred embodiments of the present invention, and are only used to illustrate the technical solutions of the present invention, rather than to limit them. Although the present invention has been described in detail with reference to the aforementioned embodiments, it should be understood by those skilled in the art that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features thereof may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A method for controlling the output power of an energy supply device, characterized in that: The method comprises: Acquiring real-time voltage parameters of a driving energy supply device; the driving energy supply device is used to supply energy to a driving working device of an energy supply object device corresponding to the target energy supply device; Determining a voltage abnormality judgment result corresponding to the driving energy supply device according to the real-time voltage parameter and the preset voltage threshold parameter; Determining the energy supply output power corresponding to the target energy supply device according to the voltage abnormality judgment result; Generate an energy supply control instruction corresponding to the energy supply output power; the energy supply control instruction is used to control the target energy supply device to supply energy to the driving energy supply device with the energy supply output power.

2. The method for controlling the output power of energy supply equipment according to claim 1, wherein: The target energy supply device is a hydrogen fuel cell; and / or, the energy supply target device is a vehicle; and / or, the driving working device includes a driving motor; and / or, the driving energy supply device is a battery; And / or, the real-time voltage parameter includes a current single cell voltage and a current total battery voltage; the current single cell voltage is a maximum single cell voltage.

3. The method for controlling the output power of energy supply equipment according to claim 2, wherein: Determining a voltage anomaly judgment result corresponding to the drive energy supply device according to the real-time voltage parameter and the preset voltage threshold parameter includes: Determining an overvoltage threshold corresponding to the drive energy supply device; Determining a limiting voltage threshold according to the overvoltage threshold; It is determined whether the real-time voltage parameter is greater than or equal to the limit voltage threshold to obtain a first voltage abnormality determination result.

4. The method for controlling the output power of energy supply equipment according to claim 3, wherein: The overvoltage threshold includes a single cell overvoltage threshold and a total battery overvoltage threshold; the limit voltage threshold includes a single cell limit voltage threshold and a total battery limit voltage threshold; Furthermore, determining the overvoltage threshold corresponding to the driving energy supply device includes: Obtaining a single cell test overvoltage threshold and a total battery test overvoltage threshold corresponding to the drive energy supply device; Calculating the product of the single-cell test overvoltage threshold and the overvoltage fault coefficient to obtain the single-cell overvoltage threshold; Calculating the product of the total battery test overvoltage threshold and the overvoltage fault coefficient to obtain the total battery overvoltage threshold; Furthermore, determining the limiting voltage threshold according to the overvoltage threshold includes: Calculating the product of the single cell overvoltage threshold and the limiting fault coefficient to obtain a single cell limiting voltage threshold; Calculating the product of the total battery overvoltage threshold and the limit fault coefficient to obtain the total battery limit voltage threshold; Furthermore, determining whether the real-time voltage parameter is greater than or equal to the limit voltage threshold to obtain a first voltage abnormality determination result includes: It is determined whether the current single cell voltage is greater than or equal to the single cell limit voltage threshold, or whether the current total battery voltage is greater than or equal to the total battery limit voltage threshold, to obtain a first voltage abnormality determination result.

5. The method for controlling the output power of energy supply equipment according to claim 3, wherein: The determining, based on the voltage abnormality judgment result, the energy supply output power corresponding to the target energy supply device includes: When the first voltage abnormality judgment result is yes, determining that the energy supply output power corresponding to the target energy supply device is a first power value; the first power value is inversely proportional to the current single cell voltage and / or the current total battery voltage; When the result of the first voltage abnormality judgment is no, the energy supply output power corresponding to the target energy supply device is not adjusted.

6. The method for controlling the output power of energy supply equipment according to claim 4, wherein: When the first voltage abnormality determination result is yes, the method further includes: determining whether the current single cell voltage is greater than or equal to the single cell overvoltage threshold, or whether the current total battery voltage is greater than or equal to the total battery overvoltage threshold, to obtain a second voltage abnormality determination result; According to the second voltage abnormality judgment result, the energy supply output power corresponding to the target energy supply equipment is determined.

7. The method for controlling the output power of energy supply equipment according to claim 6, characterized in that: The step of determining the energy output power corresponding to the target energy supply device according to the second voltage abnormality judgment result includes: When the second voltage abnormality judgment result is yes, determining that the energy supply output power corresponding to the target energy supply device is 0; When the second voltage abnormality judgment result is no, the energy supply output power corresponding to the target energy supply device is determined to be a second power value; the second power value is inversely proportional to the current single cell voltage and / or the current total battery voltage.

8. An output power control device for energy supply equipment, characterized in that: The device comprises: An acquisition module, configured to acquire real-time voltage parameters of a driving energy supply device; the driving energy supply device is configured to supply energy to a driving working device of an energy supply object device corresponding to the target energy supply device; A judgment result determination module, configured to determine a voltage abnormality judgment result corresponding to the drive energy supply device based on the real-time voltage parameter and a preset voltage threshold parameter; An energy supply output power determination module is used to determine the energy supply output power corresponding to the target energy supply device according to the voltage abnormality judgment result; A generation module is used to generate an energy supply control instruction corresponding to the energy supply output power; the energy supply control instruction is used to control the target energy supply device to supply energy to the driving energy supply device with the energy supply output power.

9. An output power control device for energy supply equipment, characterized in that: The device comprises: a memory storing executable program code; a processor coupled to the memory; The processor calls the executable program code stored in the memory to execute the energy supply equipment output power control method according to any one of claims 1 to 7.

10. A hydrogen-powered vehicle, characterized in that: The hydrogen-powered vehicle includes a hydrogen fuel supply device for supplying energy, a driving power supply device connected to the hydrogen fuel supply device, and a driving working device connected to the hydrogen fuel supply device and the driving power supply device; The hydrogen-powered vehicle controls the hydrogen fuel energy supply device by using the energy supply device output power control method according to any one of claims 1 to 7.

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