CN108919124A - The method and apparatus for determining high pressure generator peak power output - Google Patents
The method and apparatus for determining high pressure generator peak power output Download PDFInfo
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- CN108919124A CN108919124A CN201810245498.6A CN201810245498A CN108919124A CN 108919124 A CN108919124 A CN 108919124A CN 201810245498 A CN201810245498 A CN 201810245498A CN 108919124 A CN108919124 A CN 108919124A
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- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
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Abstract
The invention discloses a kind of method and apparatus of determining high pressure generator peak power output, and this approach includes the following steps：Obtain the remaining capacity of at least one battery in the high voltage supply unit；According to range locating for acquired remaining capacity, the peak power output of the high pressure generator is determined.At least one battery in the present invention is used to provide electric energy to high pressure generator, and the present invention actually can provide the ability of electric energy to high pressure generator by battery, determine the peak power output of high pressure generator；I.e. according to determining peak power output, user can know the current working condition of high pressure generator, output power so as to avoid the high pressure generator of user setting is higher than the practical output power being capable of providing of the high pressure generator, improves the using effect of high pressure generator.
Description
Technical Field
The invention relates to the technical field of high-voltage equipment, in particular to a method and a device for determining the maximum output power of a high-voltage generator.
Background
High voltage devices generally comprise: high voltage power supply unit and high voltage device. The high voltage power supply unit generally includes a storage battery, a capacitor bank and a high voltage generator. The high-voltage equipment has certain size limitation, and the discharge capacity of the storage battery pack is not enough to enable the high-voltage generator to work normally when the volume of the storage battery pack meets the volume provided by the high-voltage equipment; therefore, a capacitor bank is added between the storage battery pack and the high-voltage generator to improve the discharge capacity of the storage battery pack. When the power supply system works, the storage battery pack firstly charges the capacitor bank; after the charging is finished, the storage battery pack is disconnected; providing electrical energy to the high voltage generator by discharging of the capacitor bank; the high-voltage generator outputs power to the high-voltage device by utilizing the electric energy provided by the capacitor bank so that the high-voltage device can realize corresponding functions.
Before the high-voltage equipment is actually used, a user sets the output power of the high-voltage generator on an operation interface of the high-voltage equipment according to the function required to be realized. However, the high-voltage equipment is operated by the electric energy stored in the storage battery in the high-voltage power supply unit, and the electric energy stored in the storage battery is continuously reduced along with the continuous use, which results in the continuous reduction of the actual output power of the high-voltage generator. Therefore, the output power of the high voltage generator set by the user is larger than the power that the high voltage generator can actually output, and the situation may cause poor use effect of the high voltage device.
Disclosure of Invention
In view of this, embodiments of the present invention provide a method and an apparatus for determining a maximum output power of a high voltage generator, so as to solve a problem of poor use effect of an electronic device caused by that the output power provided by the high voltage generator cannot meet a user's requirement.
According to a first aspect, an embodiment of the present invention provides a method for determining a maximum output power of a high voltage generator, including the following steps:
acquiring the residual capacity of at least one storage battery in the high-voltage power supply unit;
and determining the maximum output power of the high-voltage generator according to the range of the acquired residual capacity.
The invention determines the maximum output power of the high-voltage generator through the capacity of the storage battery which can actually provide electric energy to the high-voltage generator; according to the determined maximum output power, a user can know the current working state of the high-voltage generator, so that the condition that the output power of the high-voltage generator set by the user is higher than the output power which can be actually provided by the high-voltage generator is avoided, and the using effect of the high-voltage generator is improved.
With reference to the first aspect, in a first embodiment of the first aspect, the high-voltage power supply unit is composed of the at least one storage battery and the high-voltage generator, wherein the at least one storage battery is directly connected with the high-voltage generator, and an internal resistance of the storage battery is smaller than a preset value.
The internal resistance of the storage battery is reasonably set, so that the internal resistance of the storage battery is ensured to be smaller than a preset value, and the voltage drop of the storage battery in the use process can be reduced, so that the storage battery has enough discharge capacity; furthermore, the battery is connected directly to the high-voltage generator, i.e. the high-voltage generator is supplied with electrical power directly via the battery. Under the precondition that the internal resistance of the storage battery is smaller than the preset value, the storage battery is directly connected with the high-voltage generator, so that the use of a capacitor bank for improving the discharge capacity of the storage battery can be avoided, the utilization rate of the storage battery is improved, and the cruising capacity of high-voltage equipment powered by the high-voltage power supply unit is further improved.
With reference to the first aspect or the first implementation manner of the first aspect, in a second implementation manner of the first aspect, the determining the maximum output power of the high voltage generator according to the range of the acquired remaining power includes:
determining the range of the residual electric quantity;
when the residual electric quantity is greater than or equal to a first electric quantity threshold value, determining the maximum output power of the high-voltage generator as rated power; or,
when the residual electric quantity is smaller than the first electric quantity threshold value and larger than a second electric quantity threshold value, determining the maximum output power of the high-voltage generator as first power, wherein the first power is smaller than the rated power; or,
and when the residual electric quantity is smaller than or equal to the second electric quantity threshold value, determining the maximum output power of the high-voltage generator as second power, wherein the second power is smaller than the first power.
The invention divides the maximum power which can be output by the high-voltage generator into three grades by utilizing the specific range of the residual electric quantity; the maximum output power of the high-voltage generator is determined according to different states of the storage battery in the using process, so that a user can know the maximum power which can be output by the high-voltage generator in real time in the using process of the high-voltage generator, and the user can conveniently adjust the requirement on the output power of the high-voltage generator in time; in addition, when the residual electric quantity is lower, the high-voltage generator can output power, and the utilization rate of the storage battery is increased.
With reference to the second embodiment of the first aspect, in a third embodiment of the first aspect,
when the residual capacity is greater than or equal to 20%, determining the maximum output power of the high-voltage generator as the rated power; or,
when the residual capacity is less than 20% and more than 10%, determining the maximum output power of the high-voltage generator as the first power, wherein the first power is 0.3-0.5 times of the rated power; or,
when the residual capacity is less than or equal to 10%, determining the maximum output power of the high-voltage generator to be the second power, wherein the second power is less than 0.3 times of the rated power.
In the invention, the internal resistance of the storage battery is set to be lower than a preset value, so that the voltage drop of the storage battery in the use process can be reduced in the discharging process of the storage battery; the voltage drop is reduced, and the rated power can still be output when the residual electric quantity of the storage battery is equal to 20%; when the residual electric quantity is lower than 10%, the storage battery can still ensure the normal work of the high-voltage generator, and the maximum power which can be output by the storage battery can reach a second power; the utilization rate of the storage battery is improved, and the longer endurance time of the battery is ensured.
With reference to the first aspect or the first implementation manner of the first aspect, in a fourth implementation manner of the first aspect, before the step of determining the maximum output power of the high voltage generator according to the range of the acquired remaining power, the method further includes:
acquiring the output voltage of the at least one storage battery and the input voltage of the high-voltage generator;
judging whether the difference value of the output voltage and the input voltage is greater than a preset value;
and when the difference value is larger than the preset value, determining that the residual electric quantity is abnormal.
The output of the storage battery is directly connected with the input of the high-voltage generator, and whether the residual electric quantity of the storage battery is abnormal or not is judged by judging whether the difference value between the output voltage and the input voltage of the storage battery exceeds a preset value or not, so that the discharging safety of the storage battery is ensured.
With reference to the first aspect or the first embodiment of the first aspect, in a fifth embodiment of the first aspect,
acquiring the times of outputting the maximum power by the high-voltage generator and the output voltage of the at least one storage battery;
and calculating the duration of the maximum power output by the high-voltage generator each time according to the residual electric quantity, the maximum output power, the times and the output voltage.
According to the invention, the duration time corresponding to each maximum output power is respectively calculated, namely, the method provided by the invention can provide the duration time corresponding to the output power of the high-voltage generator under each maximum output power, and is used for prompting the endurance time of the storage battery for a user, so that the user can charge the storage battery in time.
With reference to the fifth embodiment of the first aspect, in the sixth embodiment of the first aspect, the duration is calculated using the following formula:
wherein t is the duration, SOC is the remaining capacity, C is the rated capacity of the at least one battery, η is the efficiency of the at least one battery, U is the output voltage, P is the maximum output power, and n is the number of times of outputting the maximum power.
According to a second aspect, an embodiment of the present invention provides an apparatus for determining a maximum output power of a high voltage generator, including:
the first acquisition module is used for acquiring the residual electric quantity of at least one storage battery in the high-voltage power supply unit;
and the first determining module is used for determining the maximum output power of the high-voltage generator according to the range of the acquired residual electric quantity.
The device for determining the maximum output power of the high-voltage generator determines the maximum output power of the high-voltage generator through the capacity of the storage battery, which can actually provide electric energy for the high-voltage generator; according to the determined maximum output power, a user can know the current working state of the high-voltage generator, so that the condition that the output power of the high-voltage generator set by the user is higher than the output power which can be actually provided by the high-voltage generator is avoided, and the using effect of the high-voltage generator is improved.
According to a third aspect, an embodiment of the present invention provides an electronic device, including: a memory and a processor, the memory and the processor being communicatively connected to each other, the memory having stored therein computer instructions, and the processor executing the computer instructions to perform the method for determining the maximum output power of a high voltage generator as set forth in the first aspect or any one of the embodiments of the first aspect.
According to a fourth aspect, an embodiment of the present invention provides a computer-readable storage medium, which stores computer instructions for causing a computer to execute the method for determining the maximum output power of a high voltage generator described in the first aspect or any one of the implementation manners of the first aspect.
Drawings
The features and advantages of the present invention will be more clearly understood by reference to the accompanying drawings, which are illustrative and not to be construed as limiting the invention in any way, and in which:
FIG. 1 illustrates a specific schematic method flow diagram of a method of determining maximum output power of a high voltage generator in an embodiment of the present invention;
FIG. 2 shows a more detailed schematic block diagram of a high voltage power supply unit in an embodiment of the invention;
fig. 3 shows a more detailed schematic block diagram of a high voltage device in an embodiment of the invention;
FIG. 4 shows a more detailed schematic block diagram of a precharge circuit in an embodiment of the present invention;
FIG. 5 illustrates another specific schematic method flow diagram of a method of determining maximum output power of a high voltage generator in an embodiment of the present invention;
FIG. 6 is a flow chart of another specific illustrative method of determining maximum output power of a high voltage generator in an embodiment of the present invention;
FIG. 7 is another specific schematic method flow diagram of a method of determining maximum output power of a high voltage generator in an embodiment of the present invention;
FIG. 8 is another schematic partial method flow diagram of a method of determining maximum output power of a high voltage generator in an embodiment of the invention;
FIG. 9 is a schematic structural diagram of an apparatus for determining the maximum output power of a high voltage generator according to an embodiment of the present invention;
FIG. 10 is a schematic structural diagram showing another schematic of the apparatus for determining the maximum output power of the high voltage generator according to the embodiment of the present invention;
fig. 11 shows a schematic structural diagram of an electronic device in an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As will be understood by those skilled in the art, the nominal charge, is intended to represent the capacity of the battery at its fully charged state; the remaining capacity (SOC) is used to indicate the ratio of the remaining capacity of the battery after being used for a certain period of time or left unused for a long period of time to the capacity of the battery in its fully charged State, and is usually expressed as a percentage.
The embodiment of the invention provides a method for determining the maximum output power of a high-voltage generator, which can be used in a device for determining the maximum output power of the high-voltage generator, and as shown in fig. 1, the method comprises the following steps:
and S11, acquiring the residual capacity of at least one storage battery in the high-voltage power supply unit.
The high-voltage power supply unit in this embodiment includes at least one storage battery and a high-voltage generator, where the storage battery is configured to provide electric energy to the high-voltage generator, and the storage battery may directly provide electric energy to the high-voltage generator, or may provide electric energy to the high-voltage generator through another energy storage device or another circuit. Regardless of the specific circuit connections of the battery to the high voltage generator, the high voltage generator operates on the basis of the electrical energy provided by the battery. The number of the storage batteries in the high-voltage power supply unit and the electric connection mode among the storage batteries can be specifically set according to specific conditions.
The remaining capacity of the battery is therefore directly related to the output power of the high-voltage generator. In this embodiment, the remaining capacity of at least one storage Battery may be detected by a Battery Management System (BMS), or may be detected by other detection means. The specific method or device for measuring the residual capacity can be adjusted according to actual conditions, and only the device for determining the maximum output power of the high-voltage generator needs to be ensured to be capable of acquiring the residual capacity of at least one storage battery in the high-voltage power supply unit.
And S12, determining the maximum output power of the high-voltage generator according to the range of the acquired residual capacity.
And the device for determining the maximum output power of the high-voltage generator determines the corresponding maximum output power of the high-voltage generator when the residual electric quantity is in different ranges according to the obtained range of the residual electric quantity.
The finer the division of the range corresponding to the residual electric quantity is, the smaller the difference between two adjacent maximum output powers of the high-voltage generator is, and the higher the accuracy of the determined maximum output power of the high-voltage generator is.
The at least one storage battery in the embodiment is used for supplying electric energy to the high-voltage generator, and the maximum output power of the high-voltage generator is determined through the capacity (the residual capacity of the storage battery) of the storage battery, which can actually supply electric energy to the high-voltage generator; according to the determined maximum output power, a user can know the current working state of the high-voltage generator, so that the condition that the output power of the high-voltage generator set by the user is higher than the output power which can be actually provided by the high-voltage generator is avoided, and the using effect of the high-voltage generator is improved.
In some optional embodiments of the present invention, as shown in fig. 2, the high voltage power supply unit may be composed of at least one battery and a high voltage generator, for example. Wherein at least one accumulator is directly connected with the high-voltage generator, and the internal resistance of the accumulator is less than a preset value.
The amount of internal resistance of the battery 11 is related to the core of the battery from which the battery 11 is made, the length of the power cord within the battery, and the internal diameter of the power cord. Therefore, the secondary battery 11 having an internal resistance smaller than the preset value can be prepared by at least one of selecting a battery core having a small internal resistance, shortening the length of the power supply line, or increasing the inner diameter of the power supply line.
In addition, the battery 11 may be one of a lithium battery, a lead-acid battery, a nickel-base battery, or other types of batteries that can be charged and discharged.
In practical applications, the number of the storage batteries 11 and the series-parallel connection manner between the storage batteries 11 are not limited to those shown in fig. 2, and may be specifically set according to the power required to be output by the actual high-voltage generator 20. Since the higher the power output required by the high voltage generator 20, the greater the electric power required by it, the greater the electric power required by the battery 11.
For the convenience of the following description, at least one secondary battery 11 directly connected with the high voltage generator 20 is referred to as a battery module, which may include a plurality of secondary batteries 11 connected to each other. For example, 700 batteries 11 may be included, that is, 10 sets of modules may be connected in parallel in series with a series connection of 70 batteries 11 as a set of modules. The battery module 10 is directly connected to the high voltage generator 20, i.e. the battery module 10 discharges directly to the high voltage generator to supply the operation of the high voltage generator 20.
Through a plurality of experiments, the inventor of the application finds that the reason why the capacity of the storage battery for discharging to the high-voltage generator alone is insufficient is that the voltage drop of the storage battery during the use process is too large, not the specific quantity of the storage battery, but the internal resistance of the storage battery is too large. Therefore, in the present embodiment, by providing the storage battery having an internal resistance smaller than the preset value in the power supply unit, the power supply unit in the present embodiment can supply the electric energy required for the operation of the high voltage generator even without the capacitor bank. The power supply unit for supplying power to the high-voltage equipment provided by the embodiment omits a capacitor bank necessary for the power supply unit in the prior art, and meanwhile, the high-voltage equipment can still work normally, so that the electric quantity loss of a storage battery caused by the release of residual electric quantity in the capacitor bank in the prior art is avoided, and the endurance time of the high-voltage equipment is prolonged.
Wherein, optionally, the preset value is 25 milliohms, that is, the internal resistance of the storage battery 11 is less than 25 milliohms. For example, in the above connection manner of the battery module 10, the internal resistance of the battery module 10 is less than 175 milliohms, i.e., 25 × 70 ÷ 10 ═ 175 milliohms.
After many experiments, the inventor proves that under the condition that the internal resistance of the storage battery is less than 25 milliohms, the voltage consumed by the internal resistance is reduced. Wherein the test environment is as follows: the test uses the battery module described above, (including 700 batteries 11, that is, a group of modules formed by connecting 70 batteries 11 in series, and 10 groups of modules connected in parallel in sequence), the voltage of the battery module is about 265V, the discharge current required by the user is 175A, and the discharge time is 1S. Specific test data are shown in table 1:
TABLE 1 test data
In which the input voltage of the high voltage generator is measured after 20ms of discharge (i.e., after the discharge voltage of the battery module is stabilized). As can be seen from the data in the above table, when the internal resistance of the power supply unit is less than 240 milliohms, the discharge current of the battery module can reach 200A; when the internal resistance of the power supply unit is less than 250 milliohms, the discharge current of the battery module can reach 150A.
From the data in the above table, the resistance of the relevant connection cable between the battery module and the high voltage generator is removed, and the reverse calculation can be deduced according to the series-parallel connection relationship of each storage battery pack in the battery module, and when the internal resistance of the storage battery is less than 25 milliohms, the storage battery 11 in the embodiment has a sufficiently large discharge capacity, and can meet the requirement of high-current discharge of high voltage equipment.
Therefore, the sum of the total internal resistance of the at least one storage battery 11 directly connected with the high-voltage generator 20 and the internal resistance of the connecting cable is less than 200 milliohms, and in the using process, the voltage drop of the at least one storage battery 11 and the connecting cable is small, so that the discharging capacity of the storage battery can be ensured; on the other hand, the discharging capacity of the storage battery is improved, and under the condition of the same discharging requirement, the small number of storage batteries can be realized, namely, the volume occupied by the high-voltage power supply unit is small, and the miniaturization of high-voltage equipment can be realized.
Under the condition that the internal resistance of the storage battery 11 is smaller than the preset value, in the discharging process of the storage battery 11, the voltage consumed by the internal resistance of the storage battery is reduced, namely, the voltage drop of two ends of the storage battery 11 is reduced, so that the storage battery 11 has enough discharging capacity; furthermore, the battery module 10 is directly connected to the high voltage generator 20, i.e., the power is directly supplied to the high voltage generator 20 through the battery module 10. On the premise that the internal resistance of the storage battery is smaller than the preset value, the storage battery 11 is directly connected with the high-voltage generator 20, so that the use of a capacitor bank for improving the discharging capacity of the storage battery can be avoided, the utilization rate of the high-voltage power supply unit is improved, and the cruising capacity of high-voltage equipment powered by the high-voltage power supply unit is further improved.
Optionally, as shown in fig. 3, the high voltage device to which the high voltage power supply unit is applied further includes a precharge circuit 30 connected in parallel with the at least one secondary battery 11. The specific structure of the precharge circuit 30 is shown in fig. 4, and includes a control branch 31 and a capacitor C1 connected in series. Wherein the control branch 31 comprises: a first branch and a second branch connected in parallel; the first branch comprises a first switch K1 and a resistor connected in series; the second branch comprises a second switch K2.
The specific operation of the precharge circuit 30 is as follows:
(1) when the battery 11 starts to discharge, K1 is closed and K2 is opened, and at this time, the precharge circuit 30 is a series circuit of a resistor R1 and a capacitor C1, forming a first-order circuit. The accumulator 11 charges the capacitor C1 and during the charging process a measurement of the voltage across the capacitor C1 is carried out. When the voltage across the capacitor C1 reaches a predetermined voltage value, the first switch K1 is opened and the second switch K2 is closed.
(2) The second switch K2 is closed, the first switch K1 is opened, and the capacitor C1 is connected in parallel with the battery 11 at this time, so that the transition of the battery 11 to the discharge of the high voltage generator 20 is realized.
The working state of the pre-charging circuit 30 is controlled by the control branch 31, so that on one hand, the damage of the impact current to the high-voltage generator 20 can be avoided; on the other hand, after the transition is completed, the resistor R1 in the first branch is disconnected from the precharge circuit 30, so that the influence of the voltage drop across the resistor R1 on the battery discharge can be reduced.
In some alternative embodiments of the invention, the high voltage device comprises a mobile DR device (also known as a mobile digital direct imaging device).
In particular, mobile DR devices are used to digitally image the bedside of patients who are immobile (e.g., using life support equipment), have difficulty moving (e.g., fractured patients), or have life risks due to movement procedures (e.g., myocardial infarction, pulmonary embolism, etc.).
The mobile DR apparatus includes the high voltage power supply unit and the ray tube in the above embodiments, wherein the high voltage generator 20 converts the voltage input thereto into high voltage, and then provides the ray tube with electric energy, so that the cathode and the anode of the ray tube have a high voltage difference (up to kilovolt), and generate rays; irradiating the human body by utilizing rays generated by a ray bulb tube; the rays penetrating through the human body are collected and converted into visible images, namely the digital imaging of the human body.
Due to the different energy of the radiation, the tissue through which the radiation can penetrate the human body is different, i.e. for different human tissues, the energy requirement for the radiation is different, and the energy of the radiation depends on the output power of the high voltage generator. Because the output power of the high voltage generator is different, correspondingly, the high voltage difference between the cathode and the anode of the ray tube is different, and the energy of the generated rays is different. Therefore, before the mobile DR device is used, the user needs to set the output power of the high voltage generator on the operation interface of the device.
However, mobile DR devices operate from electrical energy stored in the power supply system, which is continuously reduced with continued use, resulting in a continuous reduction in the actual output power of the high voltage generator. Therefore, the method in the embodiment of the invention determines the maximum output power of the high-voltage generator, so that the condition that the output power of the high-voltage generator set by a user is larger than the power which can be actually output by the high-voltage generator can be avoided, and the imaging effect of the mobile DR equipment can be improved.
Fig. 5 shows a method of determining the maximum output power of a high voltage generator according to another embodiment of the present invention, the method comprising the steps of:
and S21, acquiring the residual capacity of at least one storage battery in the high-voltage power supply unit. The details are described with reference to step S11.
And S22, determining the range of the residual capacity.
In the present embodiment, the range of the remaining power is divided into 3 levels, that is, correspondingly, the maximum output power of the high voltage generator is divided into 3 levels. When the remaining power is greater than or equal to the first power threshold, performing step S23; when the remaining power is less than the first power threshold and greater than the second power threshold, performing step S24; when the remaining power is less than or equal to the second power threshold, step S25 is performed.
And S23, determining the maximum output power of the high-voltage generator as the rated power.
And S24, determining the maximum output power of the high-voltage generator as a first power, wherein the first power is smaller than the rated power.
And S25, determining the maximum output power of the high-voltage generator as a second power, wherein the second power is smaller than the first power.
With the continuous use of the storage battery, the maximum output power of the high-voltage generator is sequentially reduced, namely the rated power is larger than the first power and larger than the second power. The specific first electric quantity threshold, the numerical value of the second electric quantity threshold and the corresponding maximum output power can be obtained according to multiple experiments, and can also be specifically set according to the internal resistance of the storage battery.
Compared with the method shown in fig. 1, in the present embodiment, the maximum power that can be output by the high voltage generator is divided into three levels by using the specific range of the remaining capacity; the maximum output power of the high-voltage generator is determined according to different states of the storage battery in the using process, so that a user can know the maximum power which can be output by the high-voltage generator in real time in the using process of the high-voltage generator, and the user can conveniently adjust the requirement on the output power of the high-voltage generator in time; in addition, when the residual electric quantity is lower, the high-voltage generator can output power, and the utilization rate of the storage battery is increased.
As an optional implementation manner of this embodiment, the first power threshold is 20%, the second power threshold is 10%, and the specific relationship between the remaining power and the maximum output power of the high voltage generator is shown in table 2:
table 2 correspondence between remaining capacity and maximum output power of high voltage generator
| Residual capacity | Maximum output power |
| [20％，100％] | Rated power |
| (10％，20％) | First power |
| (0，10％] | Second power |
Wherein the first power is 0.3-0.5 times of rated power; the second power is less than 0.3 times the rated power.
For example, the high voltage generator has a nominal power of 50KW, a first power of 20KW and a second power of 12KW, corresponding to table 1.
Fig. 6 shows a method of determining the maximum output power of a high voltage generator according to another embodiment of the present invention, the method comprising the steps of:
and S31, acquiring the residual capacity of at least one storage battery in the high-voltage power supply unit. The details are described with reference to step S11.
And S32, acquiring the output voltage of at least one storage battery and the input voltage of the high-voltage generator.
In this embodiment, at least one storage battery is called a storage battery pack, and the storage battery pack is connected in parallel with the high-voltage generator, that is, theoretically, the output voltage of the storage battery pack should be the same as the input voltage of the high-voltage generator. However, in the actual operation process of the storage battery pack and the high voltage generator, there may be an unequal situation, and when the difference between the output voltage and the input voltage exceeds a preset value, the storage battery pack needs to be stopped from discharging, and a shutdown check is performed to ensure the safety of the discharge of the storage battery pack.
Wherein, the output voltage of at least one storage battery and the input voltage of the high-voltage generator can be respectively measured by the same detection device; the detection can also be carried out respectively through different detection devices, for example, BMS detection can be adopted for the storage battery pack, and real-time voltage detection can be carried out on the high-voltage generator by adopting a bus detection circuit of the high-voltage generator.
And S33, judging whether the difference between the output voltage and the input voltage is greater than a preset value.
The device for determining the maximum output power of the high-voltage generator calculates the difference between the output voltage and the input voltage, compares the difference with a pre-stored preset value, and can judge whether the work of the storage battery pack is abnormal or not. When the difference is greater than the preset value, executing step S34; otherwise, step S35 is executed.
And S34, determining that the residual capacity is abnormal.
When the difference value between the output voltage and the input voltage is larger than the preset value in the step S33, it can be determined that the remaining power is abnormal, that is, the storage battery pack is abnormal in discharge, and at this time, the storage battery pack needs to be immediately stopped for inspection to ensure the safety of discharge of the storage battery.
And S35, determining the maximum output power of the high-voltage generator according to the range of the acquired residual capacity.
When the discharge of the storage battery is determined to be normal, the device for determining the maximum output power of the high-voltage generator determines the maximum output power of the high-voltage generator according to the range of the residual electric quantity of the storage battery pack. Please refer to the description of steps S22 to S25 in fig. 5, which is not repeated herein.
As an alternative implementation manner of this embodiment, the maximum output power of the high voltage generator may be determined according to the input voltage of the high voltage generator monitored by the bus detection circuit of the high voltage generator itself. In particular, the amount of the solvent to be used,
when the input voltage is greater than or equal to the voltage threshold, the maximum output power is the rated power;
when the input voltage is less than the voltage threshold, the maximum output power is less than the rated power.
Compared with the method shown in fig. 1 or fig. 5, in the embodiment, the output of the storage battery is directly connected with the input of the high-voltage generator, and whether the residual electric quantity of the storage battery pack is abnormal is judged by judging whether the difference value between the output voltage and the input voltage of the storage battery pack exceeds a preset value, so that the discharging safety of the storage battery pack is ensured.
Fig. 7 shows a method of determining the maximum output power of a high voltage generator according to another embodiment of the present invention, the method comprising the steps of:
and S41, acquiring the residual capacity of at least one storage battery in the high-voltage power supply unit. Please refer to step S11 for details.
And S42, determining the maximum output power of the high-voltage generator according to the range of the acquired residual capacity.
Please refer to the description of steps S22 to S25 in fig. 5, which is not repeated herein
And S43, acquiring the times of outputting the maximum power by the high-voltage generator and the output voltage of at least one storage battery.
Wherein, the times of outputting the maximum power are the times of outputting the same maximum power by the high-voltage generator. The number of times of outputting the maximum power may be stored in advance in the device for determining the maximum output power of the high voltage generator, or may be the number of times of inputting by the user on the operation interface.
In addition, the measurement of the output voltage of the battery may be monitored by the BMS, or may be monitored by other detection means.
And S44, calculating the duration of each time the high-voltage generator outputs the maximum power according to the residual capacity, the maximum output power, the times and the output voltage.
For example, the high voltage generator has the first power as the maximum output power, and the time for outputting the maximum power is the time for outputting the first power every time the high voltage generator is operated.
In this embodiment, the duration is related to the remaining capacity of the battery, the maximum output power of the high voltage generator, the number of times the maximum power is output, and the output voltage of the battery. Specifically, the duration of each time the high voltage generator outputs the maximum power may be calculated using the following formula:
wherein t is the duration, SOC is the remaining capacity, C is the rated capacity of the at least one battery, η is the efficiency of the at least one battery, U is the output voltage, P is the maximum output power, and n is the number of times of outputting the maximum power.
Compared with the method shown in fig. 1, fig. 5, or fig. 6, in this embodiment, the duration corresponding to each maximum output power is calculated respectively, that is, the method provided by the present invention can provide the duration corresponding to the output power of the high voltage generator under each maximum output power, so as to prompt the user of the duration of the storage battery, and facilitate the user to charge the storage battery in time.
As an optional implementation manner of this embodiment, before step S43, this embodiment may further include a step of determining whether the remaining power is abnormal.
Specifically, as shown in fig. 8, before step S43, the following steps are included:
and S45, acquiring the output voltage of at least one storage battery and the input voltage of the high-voltage generator. Please refer to step S32 for details.
And S46, judging whether the difference between the output voltage and the input voltage is greater than a preset value.
When the difference is greater than the preset value, executing step S47; otherwise, step S43 is executed. The rest is described in step S33.
And S47, determining that the residual capacity is abnormal. Please refer to step S34 for details.
Fig. 9 is a diagram illustrating an apparatus for determining a maximum output power of a high voltage generator according to an embodiment of the present invention, the apparatus including:
the first obtaining module 51 is configured to obtain a remaining power of at least one battery in the high-voltage power supply unit, for details, refer to step S11.
The first determining module 52 is configured to determine the maximum output power of the high voltage generator according to the range of the acquired remaining power, for details, refer to step S12.
The means for determining the maximum output power of the high-voltage generator determines the maximum output power of the high-voltage generator by the capacity of the accumulator that is actually able to supply electrical energy to the high-voltage generator; according to the determined maximum output power, a user can know the current working state of the high-voltage generator, so that the condition that the output power of the high-voltage generator set by the user is higher than the output power which can be actually provided by the high-voltage generator is avoided, and the using effect of the high-voltage generator is improved.
In some alternative embodiments of the present invention, as shown in fig. 10, the apparatus further comprises:
the second obtaining module 61 is configured to obtain an output voltage of the at least one battery and an input voltage of the high voltage generator, which is described in detail with reference to step S32.
The determining module 62 determines whether the difference between the output voltage and the input voltage is greater than a predetermined value, which is described in detail with reference to step S33.
The second determining module 63 is configured to determine that the remaining power is abnormal, which is described in detail with reference to step S34.
Optionally, as shown in fig. 10, the apparatus further includes:
the third obtaining module 64 is used for obtaining the number of times the high voltage generator outputs the maximum power and the output voltage of the at least one battery, which are described in detail with reference to step S43.
The calculating module 65 is configured to calculate a duration of the maximum power output by the high voltage generator each time according to the remaining power, the maximum output power, the number of times and the output voltage, which is described in detail with reference to step S44.
Fig. 11 shows an electronic device according to an embodiment of the present invention, which may include a processor 71 and a memory 72, wherein the processor 71 and the memory 72 may be connected by a bus or other means, and fig. 11 illustrates the connection by the bus as an example.
The processor 71 may be a Central Processing Unit (CPU). The Processor 71 may also be other general purpose processors, Digital Signal Processors (DSPs), Application Specific Integrated Circuits (ASICs), Field Programmable Gate Arrays (FPGAs) or other Programmable logic devices, discrete Gate or transistor logic devices, discrete hardware components, or combinations thereof.
The memory 72, as a non-transitory computer-readable storage medium, may be used for storing non-transitory software programs, non-transitory computer-executable programs, and modules, such as program instructions/modules corresponding to the method for determining the maximum output power of the high voltage generator in the embodiment of the present invention (for example, the first obtaining module 51 and the first determining module 52 shown in fig. 9). The processor 71 executes various functional applications and data processing of the processor by executing non-transitory software programs, instructions and modules stored in the memory 72, namely, the method for determining the maximum output power of the high voltage generator in the above method embodiment.
The memory 72 may include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required for at least one function; the storage data area may store data created by the processor 71, and the like. Further, the memory 72 may include high speed random access memory, and may also include non-transitory memory, such as at least one magnetic disk storage device, flash memory device, or other non-transitory solid state storage device. In some embodiments, the memory 72 may optionally include memory located remotely from the processor 71, and such remote memory may be connected to the processor 71 via a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.
The one or more modules are stored in the memory 72 and, when executed by the processor 71, perform the method of determining the maximum output power of a high voltage generator as in the embodiment of fig. 1 and 5-7.
The details of the electronic device may be understood by referring to the corresponding descriptions and effects in the embodiments shown in fig. 1 and fig. 5 to fig. 7, which are not described herein again.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by a computer program, which can be stored in a computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. The storage medium may be a magnetic Disk, an optical Disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a Flash Memory (Flash Memory), a Hard Disk (Hard Disk Drive, abbreviated as HDD) or a Solid State Drive (SSD), etc.; the storage medium may also comprise a combination of memories of the kind described above.
Although the embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the invention, and such modifications and variations fall within the scope defined by the appended claims.
Claims (10)
1. A method of determining maximum output power of a high voltage generator, comprising the steps of:
acquiring the residual capacity of at least one storage battery in the high-voltage power supply unit;
and determining the maximum output power of the high-voltage generator according to the range of the acquired residual capacity.
2. The method according to claim 1, characterized in that the high-voltage power supply unit consists of the at least one accumulator and the high-voltage generator, wherein the at least one accumulator is directly connected to the high-voltage generator and the internal resistance of the accumulator is less than a preset value.
3. The method according to claim 1 or 2, wherein said determining the maximum output power of the high voltage generator according to the range of the acquired remaining capacity comprises:
determining the range of the residual electric quantity;
when the residual electric quantity is greater than or equal to a first electric quantity threshold value, determining the maximum output power of the high-voltage generator as rated power; or,
when the residual electric quantity is smaller than the first electric quantity threshold value and larger than a second electric quantity threshold value, determining the maximum output power of the high-voltage generator as first power, wherein the first power is smaller than the rated power; or,
and when the residual electric quantity is smaller than or equal to the second electric quantity threshold value, determining the maximum output power of the high-voltage generator as second power, wherein the second power is smaller than the first power.
4. The method of claim 3,
when the residual capacity is greater than or equal to 20%, determining the maximum output power of the high-voltage generator as the rated power; or,
when the residual capacity is less than 20% and more than 10%, determining the maximum output power of the high-voltage generator as the first power, wherein the first power is 0.3-0.5 times of the rated power; or,
when the residual capacity is less than or equal to 10%, determining the maximum output power of the high-voltage generator to be the second power, wherein the second power is less than 0.3 times of the rated power.
5. The method according to claim 1 or 2, wherein the step of determining the maximum output power of the high voltage generator according to the range of the acquired remaining capacity further comprises:
acquiring the output voltage of the at least one storage battery and the input voltage of the high-voltage generator;
judging whether the difference value of the output voltage and the input voltage is greater than a preset value;
and when the difference value is larger than the preset value, determining that the residual electric quantity is abnormal.
6. The method of claim 1 or 2, further comprising:
acquiring the times of outputting the maximum power by the high-voltage generator and the output voltage of the at least one storage battery;
and calculating the duration of the maximum power output by the high-voltage generator each time according to the residual electric quantity, the maximum output power, the times and the output voltage.
7. The method of claim 6, wherein the duration is calculated using the following equation:
wherein t is the duration, SOC is the remaining capacity, C is the rated capacity of the at least one battery, η is the efficiency of the at least one battery, U is the output voltage, P is the maximum output power, and n is the number of times of outputting the maximum power.
8. An apparatus for determining maximum output power of a high voltage generator, comprising:
the first acquisition module is used for acquiring the residual electric quantity of at least one storage battery in the high-voltage power supply unit;
and the first determining module is used for determining the maximum output power of the high-voltage generator according to the range of the acquired residual electric quantity.
9. An electronic device, comprising: a memory and a processor, the memory and the processor being communicatively coupled to each other, the memory having stored therein computer instructions, the processor performing the method of determining maximum output power of a high voltage generator as recited in claims 1-7 by executing the computer instructions.
10. A computer-readable storage medium having stored thereon computer instructions for causing a computer to perform the method of determining maximum output power of a high voltage generator of claims 1-7.
Priority Applications (2)
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| CN201810245498.6A CN108919124A (en) | 2018-03-23 | 2018-03-23 | The method and apparatus for determining high pressure generator peak power output |
| PCT/CN2018/115958 WO2019179139A1 (en) | 2018-03-23 | 2018-11-16 | Method and apparatus for determining maximum output power of high voltage generator |
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| CN201810245498.6A CN108919124A (en) | 2018-03-23 | 2018-03-23 | The method and apparatus for determining high pressure generator peak power output |
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