Adaptive power supply method and high voltage generating device for mobile X-ray machine

Abstract

The present application provides an adaptive power supply method and a high-voltage generating device for a mobile X-ray machine. First, the operating information of the battery is obtained to determine the state of the battery; if it is determined that the battery is in a faulty state, a first control value is selected. If it is determined that the battery is not faulty, it is determined whether the remaining power of the battery is less than a low-power threshold. If it is, it is determined that the battery is in a low-power state, and a second control value is selected; if it is not, it is determined that the battery is in a normal state, and a third control value is selected. Finally, the circuit parameter information of the capacitor charger is obtained, and the working state of the capacitor charger is adjusted based on the circuit parameter information and the first control value or the second control value or the third control value. The present application adapts to different charging strategies of capacitor chargers according to different working conditions of the battery, thereby ensuring that the high-voltage generating device of the mobile X-ray machine operates in the optimal state and improving the reliability of operation.

Description

Technical Field

[0001] The present application relates to the field of X-ray machines, and in particular to an adaptive power supply method and a high voltage generating device for a mobile X-ray machine. Background Art

[0002] Mobile X-ray machines can be used for outdoor diagnosis, and can quickly and easily obtain X-ray images of patients or animals, and then diagnose the patients or animals. Therefore, they play an extremely important role in outdoor diagnosis, disaster relief and other occasions.

[0003] Among them, mobile X-ray machines generally need to be equipped with a large-capacity battery, which can be powered by the external mains or the internal battery during operation. However, when the battery fails, the mobile X-ray machine cannot perform exposure work under the condition of power supply only by the mains. The existing power supply logic of the high-voltage generator cannot achieve adaptive control according to different working conditions of the battery (such as normal battery, battery failure, battery undervoltage, etc.), and has the disadvantage of poor reliability. Summary of the invention

[0004] Based on this, it is necessary to provide an adaptive power supply method and a high-voltage generating device for an X-ray machine, as the power supply logic of the existing high-voltage generating device cannot be adaptive according to different operating conditions of the battery (such as normal battery, battery failure, battery undervoltage, etc.) and has poor reliability.

[0005] In a first aspect, the present invention provides an adaptive power supply method for an X-ray machine, the method comprising:

[0006] Obtaining the operating information of the battery and determining the state of the battery; if it is determined that the battery is in a faulty state, selecting a first control value; if it is determined that the battery is not faulty, determining whether the remaining power of the battery is less than a low power threshold, if so, determining that the battery is in a low power state and selecting a second control value; if not, determining that the battery is in a normal state and selecting a third control value; obtaining circuit parameter information of the capacitor charger, and adjusting the operating state of the capacitor charger based on the circuit parameter information and the first control value, the second control value, or the third control value.

[0007] In a second aspect, the present scheme provides an adaptive power supply method for an X-ray machine, the method comprising: obtaining operating information of a battery; determining whether the battery is faulty, and if so, selecting a first control value; if it is determined that the battery is not faulty, selecting a third control value; obtaining circuit parameter information of a capacitor charger, and adjusting the working state of the capacitor charger based on the circuit parameter information and the first control value or the third control value.

[0008] In a third aspect, the present invention provides an adaptive power supply method for an X-ray machine, the method comprising: obtaining operating information of a battery; determining whether the battery is normal, and if normal, selecting a third control value; if abnormal, selecting the first control value; obtaining circuit parameter information of a capacitor charger, and adjusting the working state of the capacitor charger based on the circuit parameter information and the first control value or the third control value.

[0009] In a fourth aspect, the present case provides a high-voltage generating device, comprising: a battery charger, wherein the input end of the battery charging module is used to electrically connect to a power grid; a battery, wherein the output end of the battery charger is electrically connected to the battery; a capacitor charger, wherein the input end of the capacitor charger is electrically connected to the battery; an energy storage capacitor, wherein the output end of the capacitor charger is electrically connected to the energy storage capacitor; a high-voltage conversion circuit, electrically connected between the energy storage capacitor and an X-ray generating unit, to supply power to the X-ray generating unit; and a control unit, electrically connected to the battery and the capacitor charger, to execute the adaptive power supply method as described above.

[0010] Compared with the prior art, the above-mentioned adaptive power supply method and high-voltage generating device first obtain the operating information of the battery and determine the state of the battery; if it is determined that the battery is in a faulty state, the first control value is selected. If it is determined that the battery is not faulty, it is further determined whether the remaining power of the battery is too low based on the state information. If it is determined that the remaining power of the battery is too low, the second control value is selected. If it is determined that the remaining power of the battery is normal, the third control value is selected. Finally, the circuit parameter information of the capacitor charger is obtained, and the working state of the capacitor charger is adjusted based on the circuit parameter information and the first control value or the second control value or the third control value. The present application adopts the above-mentioned power supply method to adapt to different working strategies of the capacitor charger according to different working conditions of the battery. Whether it is connected to the power grid or off the grid, it can ensure that the high-voltage generating device operates in the optimal state, improve the reliability of operation, and thus improve the stability of the X-ray machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the conventional technology, the drawings required for use in the embodiments or the conventional technology descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0012] Figure 1 A principle block diagram of a high voltage generating device provided in one embodiment of the present application;

[0013] Figure 2 A partial principle block diagram of a high voltage generating device provided in one embodiment of the present application;

[0014] Figure 3 A schematic diagram of state switching of an adaptive power supply method provided in an embodiment of the present application;

[0015] Figure 4 A schematic diagram of the working state division of the adaptive power supply method provided in an embodiment of the present application;

[0016] Figure 5 A control logic circuit of a controller provided in an embodiment of the present application Figure 1 ;

[0017] Figure 6 A control logic circuit of a controller provided in an embodiment of the present application Figure 2 ;

[0018] Figure 7 A control logic circuit of a controller provided in an embodiment of the present application Figure 3 ;

[0019] Figure 8 The electrical characteristics of the high voltage generating device provided in one embodiment of the present application under different states;

[0020] Fig. 9 A control logic block diagram provided for an embodiment of the present application;

[0021] Fig.10 A control logic block diagram provided for another embodiment of the present application;

[0022] Fig.11 A flowchart of an adaptive power supply method for a high voltage generating device provided in one embodiment of the present application.

[0023] Description of reference numerals:

[0024] 10 High voltage generator

[0025] 100 Batteries

[0026] 101 Power Grid

[0027] 102 Battery busbar

[0028] 110 Control unit

[0029] 200 Capacitor Charger

[0030] 201 Output current sampling

[0031] 202 Output voltage sampling

[0032] 203 Input voltage sampling

[0033] 204 Input voltage sampling

[0034] 300 Battery Charger

[0035] 400 Energy Storage Capacitor

[0036] 500 High Voltage Conversion Circuit

[0037] 600 X-ray generating unit DETAILED DESCRIPTION

[0038] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific implementation disclosed below.

[0039] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element at the same time.

[0040] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0041] See also Figure 1 , a structural schematic diagram of a high voltage generating device 10 applied to an X-ray machine. As shown in the figure, the high voltage generating device 10 may include three-stage conversion. The first stage conversion includes a battery 100 and a battery charger 300. The input end of the battery charger 300 is used to electrically connect to the power grid 101. The output end of the battery charger 300 is electrically connected to a battery 100. The battery charger 300 receives the power grid voltage for charging the battery 100. The second stage conversion includes a capacitor charger 200 and an energy storage capacitor 400. The input end of the capacitor charger 200 is electrically connected to the battery 100. The output end of the capacitor charger 200 is electrically connected to the energy storage capacitor 400. The third stage conversion includes a high voltage conversion circuit 500 and an X-ray generating unit 600. The input end of the high voltage conversion circuit 500 is electrically connected to the energy storage capacitor 400. The output end of the high voltage conversion circuit 500 is connected to the X-ray generating unit 600 and supplies power to it. This application mainly aims at different working conditions of the battery in the first stage conversion (such as normal battery, battery failure, battery undervoltage, etc.) to achieve adaptive control of the capacitor charger 200 in the second stage conversion.

[0042] In one embodiment, Figure 2 As shown, the high-voltage generating device 10 also includes a control unit 110. The present case does not limit the form of the control unit 110. In some embodiments, the control unit 110 may include multiple control boards, and different control boards perform different functions. In some embodiments, the control unit 110 may include a single-chip microcomputer, a DSP or other digital processing chip. The control unit 110 can acquire and calculate information of the battery 100, the capacitor charger 200, etc., as well as control the battery charger 300, the capacitor controller, etc., all within the scope of protection of the present application. In some embodiments, the control unit may also include multiple controllers, and different controllers perform different functions and operations. The present case is not limited to this.

[0043] Furthermore, an embodiment of the present application provides an adaptive power supply method, such as Figure 3 As shown, the adaptive method specifically includes:

[0044] S100: Obtaining the operating information of the battery 100 and determining the state of the battery.

[0045] In one embodiment, the operating information of the battery 100 can be obtained through the control unit 110 to determine the state of the battery. For example, the battery 100 can be in a fault state, a low power state, and a normal state. Specifically, in some embodiments, the control unit 110 can obtain the operating information of the battery 100 through the battery management system. The battery management system can monitor the operating information of the battery 100 in real time, and record the operating information of the battery 100 in real time to facilitate subsequent inquiries and calls. The battery operating information includes: fault information, battery voltage, battery current, SOC information, etc. The control unit 110 can obtain the operating information of the battery 100 stored in the battery management system through communication. In some embodiments, the control unit can also obtain the battery bus voltage through a sampling circuit, and obtain the battery power information and fault information through calculation and judgment. This case is not limited to this.

[0046] S110: Determine whether the battery 100 is in a faulty state. If the battery 100 is in a faulty state, execute step 131 to select a first control value. If the battery 100 is not in a faulty state, execute step S120.

[0047] In some embodiments, if it is determined that the battery 100 is in a fault state, the control unit 110 selects the first control value C1. Specifically, the control unit 110 loads the first control value C1 to control the capacitor charger 200. In one embodiment, the first control value may be a voltage control signal, a current control signal, or a power control signal. In one embodiment, step 131 refers to selecting the first control value. Further, if the battery 100 is not faulty, step S120 is performed.

[0048] S120: Determine whether the remaining power of the battery 100 is less than the low power threshold. If the remaining power of the battery 100 is less than the low power threshold, execute S132 and select the second control value. If it is determined that the remaining power of the battery 100 is not less than the low power threshold, execute S133 and select the third control value.

[0049] In one embodiment, if the control unit 110 determines that the battery 100 has not failed, it further determines whether the remaining power of the battery 100 is too low based on the status information. Specifically, the control unit 110 may compare the remaining power of the battery 100 with a low power threshold. If the remaining power of the battery 100 is less than the low power threshold, it is determined that the remaining power of the battery 100 is too low and the battery is in a low power state. At this time, the control unit 110 may load a second control value C2 to control the capacitor charger 200. If the remaining power of the battery 100 is greater than or equal to the low power threshold, it means that the remaining power of the battery 100 is normal, that is, the battery is in a normal state. At this time, the control unit 110 may load a third control value C3 to control the capacitor charger 200.

[0050] In one embodiment, the low power threshold can be set according to actual needs. For example, the low power threshold can be 10% or 8% of the rated capacity of the battery 100, etc., and the present case is not limited thereto. In some embodiments, the first control value C1, the second control value C2, and the third control value C3 can be a voltage control signal or a current control signal or a power control signal. In some embodiments, the first control value can be equal to the second control value. In other embodiments, the second control value can be equal to the third control value, and the present case is not limited thereto.

[0051] S140: Obtain circuit parameter information of the capacitor charger 200, and adjust the working state of the capacitor charger 200 based on the circuit parameter information and corresponding control values.

[0052] In one embodiment, the control unit 110 obtains circuit parameter information of the capacitor charger 200, and adjusts the working state of the capacitor charger 200 based on the circuit parameter information and the first control value, the second control value, or the third control value. In one embodiment, the circuit parameter information may include at least one of the output power, input power, input voltage, input current, or output current of the capacitor charger 200.

[0053] In some embodiments, the battery status can be divided into three types through the judgment of steps S110 and S120: The first type: fault status. The battery is in a fault state, cut off from the circuit, and cannot be charged or discharged; the corresponding capacitor charging controller is loaded with a first control value. The second type: low battery status. Although the battery is not faulty, it can be charged or discharged with low power and small amount. In this state, the battery needs to be charged as soon as possible; the corresponding capacitor charging controller is loaded with a second control value. The third type: normal status. The battery operates normally and can be charged or discharged within the battery specification range; the corresponding capacitor charging controller is loaded with a third control value.

[0054] It should be noted that the above determination is based on the case where the battery charger 300 is connected to the power grid 101 . In practice, the battery charger 300 may not be connected to the power grid 101 . Figure 4 FIG. 1 is a schematic diagram showing the division of system working states in an embodiment of the present application. Figure 4 As shown, whether the battery charger 300 is connected to the power grid (whether there is access to the mains) can be divided into two situations for consideration:

[0055] If the mains is connected, the input end of the battery charger 300 is connected to the power grid 101. If the battery is in a faulty state, the battery may not work properly. However, since the front stage is powered by the battery charger 300, the capacitor charger can use a suitable power to charge the energy storage capacitor (for example, select the third control value) to maintain the stability of the battery busbar. The back stage circuit works normally, can output high voltage, and generate a specified dose of X-rays. If the battery is in a low power state, although the front stage is powered by the battery charger 300, in order to protect the battery from excessive discharge, the capacitor charger can use a suitable power to charge the energy storage capacitor (for example, select the second control value). The back stage circuit works normally, can output high voltage, and generate a specified dose of X-rays. If the battery is in a normal state, the capacitor charger can charge the energy storage capacitor at the rated maximum power (for example, select the third control value). The back stage circuit works normally, can output high voltage, and generate a specified dose of X-rays.

[0056] When there is no mains access, that is, the input end of the battery charger 300 is not connected to the power grid 101. At this time, if the battery is in a normal state, the capacitor charger can charge the energy storage capacitor at the rated maximum power. The post-stage circuit works normally, can output high voltage, and generate a specified dose of X-rays. The control of the battery in a normal state when there is no mains access is basically similar to the control of the battery in a normal state when there is mains access, and will not be expanded here. If the battery fails or is in a low-power state, the capacitor charger does not work, the post-stage circuit does not work, cannot output high voltage, and cannot generate X-rays, that is, it cannot be turned on or can only be in standby mode.

[0057] It should be noted that, in some embodiments, the battery may be divided into only two working states according to the battery information, such as determining whether the battery is normal or faulty, that is, in some cases, the low power state of the battery may not be considered or not considered separately. At this time, it is only necessary to select the first control value and the third control value according to whether the battery is faulty or whether the battery is normal. For example, in some embodiments, it is determined whether the battery is faulty, if it is faulty, the first control value is selected; if it is determined that the battery is not faulty, the third control value is selected; the circuit parameter information of the capacitor charger is obtained, and the working state of the capacitor charger is adjusted based on the circuit parameter information and the first control value or the third control value. Among them, in some embodiments, the low power state can also be counted in the working mode when the battery is not faulty. In other implementations, it is determined whether the battery is normal, if normal, the third control value is selected; if abnormal, the first control value is selected; the circuit parameter information of the capacitor charger is obtained, and the working state of the capacitor charger is adjusted based on the circuit parameter information and the first control value or the third control value. Further, in some embodiments, the low power state can also be divided into the working mode when the battery is abnormal. The corresponding controls all belong to the protection scope of this application.

[0058] Further, in some embodiments, if the battery is in an acquisition fault state, if the control unit 110 obtains the output power of the capacitor charger 200, the first control value can be set to the first output power reference value; if the control unit 110 obtains the input voltage of the capacitor charger 200, the first control value can be set to the first input voltage reference value; if the control unit 110 obtains the input current of the capacitor charger 200, the first control value can be set to the first input current reference value; and then the control unit 110 can make a difference between the corresponding circuit parameter information and the corresponding reference value, and adjust the working state of the capacitor charger 200 according to the difference result and the preset control algorithm to obtain the state operation signal.

[0059] In some embodiments, if the battery is in a low-battery state, if the control unit 110 obtains the output power of the capacitor charger 200, the second control value can be set to a second output power reference value; if the control unit 110 obtains the input voltage of the capacitor charger 200, the second control value can be set to a second input voltage reference value; if the control unit 110 obtains the input current of the capacitor charger 200, the second control value can be set to a second input current reference value; and then the control unit 110 can make a difference between the corresponding circuit parameter information and the corresponding reference value, and adjust the working state of the capacitor charger 200 according to the difference result and the state operation signal obtained in accordance with the preset control algorithm.

[0060] In some embodiments, if the battery is in a normal state, if the control unit 110 obtains the output power of the capacitor charger 200, the third control value can be set to a third output power reference value; if the control unit 110 obtains the input voltage of the capacitor charger 200, the third control value can be set to a third input voltage reference value; if the control unit 110 obtains the input current of the capacitor charger 200, the third control value can be set to a third input current reference value; and then the control unit 110 can make a difference between the corresponding circuit parameter information and the corresponding reference value, and adjust the working state of the capacitor charger 200 according to the difference result and the state operation signal obtained in accordance with the preset control algorithm.

[0061] By adopting the adaptive power supply method of the above embodiment, different charging strategies of the capacitor charger 200 can be adaptively selected according to different working conditions of the battery 100, thereby ensuring that the high-voltage generating device 10 operates in the optimal state, improving the reliability of operation, and further improving the stability of the X-ray machine.

[0062] For further information, see Figure 5 In one embodiment, the circuit parameter information obtained is the output power of the capacitor charger 200. At this time, the first control value C1 can be set to the first output power reference value P 10 The second control value C2 can be set to the second output power reference value P 20 The third control value C3 can be set to the third output power reference value P 30 . That is, the control unit 110 makes a difference between the output power of the capacitor charger 200 and the control reference value selected under the corresponding working condition. According to the difference result and the preset control algorithm, the state operation signal is obtained to adjust the output power of the capacitor charger 200. Among them, the control unit 110 can obtain the current output current and the current output voltage of the capacitor charger 200 through the output current sampling 201 and the output voltage sampling 202, and multiply the two to obtain the current output power. In one embodiment, the output current sampling 201 can be a current sensor; the output voltage sampling 202 can be a voltage sensor or a resistance sampling circuit, etc., but the present case is not limited to this. In one embodiment, the preset control algorithm can be a PID algorithm, and the preset control algorithm can also be other control algorithms, which can be selected according to actual needs.

[0063] Specifically, for example, if the battery 100 fails, the control unit 110 may compare the output power with the first output power reference value P 10 At the same time, the control unit 110 can obtain a state operation signal according to a preset control algorithm based on the difference result, and adjust the output power of the capacitor charger 200 according to the state operation signal. 10The setting may be made according to the rated output power of the battery charger 300 .

[0064] Similarly, if the remaining power of the battery 100 is too low, the control unit 110 compares the output power with the second output power reference value P 20 At the same time, the control unit 110 can obtain a state operation signal according to a preset control algorithm based on the difference result, and adjust the output power of the capacitor charger 200 according to the state operation signal. 20 The setting may be made according to the rated output power of the battery charger 300 .

[0065] Wherein, the rated output power P of the battery charger 300 is 0o(max) For reference, the rated output power P 0o(max) minus a smaller amount ε p To set the first output power reference value P 10 and the second output power reference value P 20 . For example, it can be expressed as:

[0066] C1=C2=P 10 =P 20 =P 0o(max) -ε p

[0067] For example, if the rated output current P 0o(max) =1kW, the first output power reference value P 10 and the second output power reference value P 20 It can be set at about 900 W. It should be noted that the second output power reference value and the third output power reference value can be set according to actual conditions, but are not limited thereto, and the two can be equal or unequal.

[0068] If the remaining power of the battery 100 is normal, that is, the high voltage generating device 10 operates normally, the control unit 110 can compare the current output power with the third output power reference value P 30 The control unit 110 can obtain a state operation signal based on the difference result according to a preset control algorithm, and adjust the output power of the capacitor charger 200 according to the state operation signal. 30 The maximum power P of the circuit design can be set according to the output power upper limit of the capacitor charger 200. 1o(max) For reference, the third output power reference value can be set to the maximum power P of the circuit. 1o(max) , for example, can be expressed as:

[0069] C3=P 30 =P 1o(max)

[0070] It should be noted that the third output power reference value P 30 It can be set according to actual conditions, and this case is not limited to this.

[0071] The control unit 110 sets different control values, such as a first output power reference value, a second output power reference value, and a third output power reference value, according to different working conditions of the battery 100, and adjusts the output power of the capacitor charger 200 accordingly, and adaptively adjusts the charging strategy of the capacitor charger 200 under different working conditions, thereby improving the reliability of the operation of the high-voltage generating device 10.

[0072] See also Figure 6 In one embodiment, the circuit parameter information obtained is the input voltage V of the capacitor charger 200. Bbus At this time, the first control value C1 can be set to the first input voltage reference value U 10 The second control value C2 can be set to the second input voltage reference value U 20 The third control value C3 can be set to the third input voltage reference value U 30 That is, the control unit 110 makes a difference between the input voltage of the capacitor charger 200 and the input voltage reference value selected under the corresponding working condition. According to the difference result and the state operation signal obtained according to the preset control algorithm, the input voltage of the capacitor charger 200 is adjusted. At this time, the control unit 110 can obtain the input voltage of the capacitor charger 200 through the input voltage sampling 203, which can also be said to be the battery voltage V Bbus In one embodiment, the input voltage sampling 203 may be a voltage sensor or a resistor voltage divider circuit, etc. By controlling the input voltage, the output power of the capacitor charger is adjusted to achieve matching of the input power and the output power.

[0073] Specifically, if the battery 100 fails, the control unit 110 can compare the input voltage with the first input voltage reference value U 10 At the same time, the control unit 110 can obtain a state operation signal according to a preset control algorithm based on the difference result, and adjust the input voltage of the capacitor charger 200 according to the state operation signal. 10 It can be set according to the highest voltage of the battery 100. By setting the first input voltage reference value, after the battery 100 is disconnected from the battery bus 102 due to a fault, the voltage of the battery bus 102 can be maintained at a higher value to ensure that the transmission power of the circuit is at a higher level.

[0074] Among them, the highest voltage U of the battery 100 is B(max) For reference, at the highest voltage U B(max) minus a smaller amount ε UmaxTo set the first input voltage reference value U 10 . For example, it can be expressed as:

[0075] C1=U 10 =U B(max) -ε Umax

[0076] For example, the maximum voltage U of the battery 100 B(max) If the first input voltage reference value is 52 V, the first input voltage reference value can be set to 50 V. The specific value of the first input voltage reference value can be set according to actual conditions, and the present invention is not limited thereto.

[0077] When the battery 100 is in a low-power state, the control unit 110 selects the second input voltage reference value U 20 and compare the input voltage with the second input voltage reference value U 20 The control unit 110 obtains a state operation signal based on the difference result according to a preset control algorithm, and can further adjust the input voltage of the capacitor charger 200 according to the state operation signal. Among them, the second input voltage reference value can also be set according to the lowest voltage of the battery 100. By setting the second input voltage reference value, it can realize automatic adjustment and conversion of output power, ensuring that the battery 100 will not be over-discharged with large current.

[0078] If the remaining power of the battery 100 is normal, the control unit 110 can compare the current input voltage with the third input voltage reference value U 30 The control unit 110 can obtain a state operation signal based on the difference result according to a preset control algorithm, and adjust the input voltage of the capacitor charger 200 according to the state operation signal. 30 It can be set according to the lowest voltage of the battery 100. When the high voltage generating device 10 operates normally, by setting the third input voltage reference value U 30 , which can ensure stable power supply to the subsequent system.

[0079] Among them, the lowest voltage U of the battery 100 is taken as B(min) For reference, the minimum voltage U B(min) Add a smaller amount ε Umin To set the second input voltage reference value U 20 and the third input voltage reference value U 30 . For example, it can be expressed as:

[0080] C2=C3=U 20 =U 30 =U B(min) +ε Umin

[0081] For example, if the minimum voltage U of the battery 100 B(min) If the second input voltage reference value is 40 V, the second input voltage reference value and the third input voltage reference value may be set to 42 V. It should be noted that the second input voltage reference value and the third input voltage reference value may be set according to actual conditions, but are not limited thereto, and may be equal or unequal.

[0082] According to different working conditions of the battery 100 , the control unit 110 controls the input voltage of the capacitor charger 200 , thereby adjusting the output power of the capacitor charger 200 , thereby realizing adaptive charging strategies of different capacitor chargers 200 , and improving the reliability of the operation of the high-voltage generating device 10 .

[0083] See also Figure 7 In one embodiment, the circuit parameter information of the capacitor charger 200 is obtained as the input current I of the capacitor charger 200. 1i At this time, the first control value C1 can be set to the first input current reference value I 10 The second control value C2 can be set to the second input current reference value I 20 The third control value C3 can be set to the third input current reference value I 30 That is, the control unit 110 makes a difference between the input current of the capacitor charger 200 and the input current reference value selected under the corresponding working condition, and adjusts the input current of the capacitor charger 200 according to the difference result and the state operation signal obtained according to the preset control algorithm. Among them, the control unit 110 can obtain the input current I of the capacitor charger 200 through the input current sampling 204. 1i In one embodiment, the input current sample 204 may be a current sensor or the like.

[0084] Specifically, for example, when the battery 100 fails, the control unit 110 compares the input current with the first input current reference value I 10 Then, the control unit 110 obtains a state operation signal according to a preset control algorithm based on the difference result, and adjusts the input current of the capacitor charger 200 according to the state operation signal. The first input current reference value I can be set according to the rated output current of the battery charger 300. 10 When the battery 100 fails and is disconnected from the battery bus 102, the first input current reference value I 10 It can ensure that the voltage on the battery bus 102 is always controlled by the battery charger 300 .

[0085] When the battery 100 is low on power, the control unit 110 compares the input current with the second input current reference value I 20The control unit 110 obtains a state operation signal according to a preset control algorithm based on the difference result, and adjusts the input current of the capacitor charger 200 according to the state operation signal. The second input current reference value I can be set according to the rated output current of the battery charger 300. 20 The above logic can ensure that the current flowing out of the battery bus 102 is less than the maximum inflow current (ie, the input current of the battery charger 300 ), and when the battery 100 is at low power, it can ensure that the battery 100 is always in a charging state.

[0086] In some embodiments, the first input current reference value I may be set according to the rated output current of the battery charger 300. 10 and the second input current reference value I 20 Among them, the rated output current I of the battery charger 300 is 0o(max) For reference, at the rated output current I 0o(max) minus a smaller amount ε I To set the first input current reference value I 10 and the second input current reference value I 20 . For example, it can be expressed as:

[0087] C1=C2=I 10 =I 20 =I 0o(max) -ε I

[0088] For example, if the rated output current I 0o(max) =10A, the first input current reference value I 10 and the second input current reference value I 20 It can be set at about 8 A. It should be noted that the second input current reference value and the third input current reference value can be set according to actual conditions, but are not limited thereto, and the two can be equal or unequal.

[0089] When the battery 100 is in normal condition, that is, the normal operation of the high voltage generating device 10 can be guaranteed, the control unit 110 can compare the input current with the third input current reference value I 30 The control unit 110 may obtain a state operation signal based on the difference result according to a preset control algorithm, and adjust the input current of the capacitor charger 200 according to the state operation signal. The third input current reference value I may be set according to the rated input current of the capacitor charger 200. 30 For example, the third input current reference value I 30 The rated input current of the capacitor charger is I 1i(max) Above or without limitation, for example, it can be expressed as: C3 = I 30 ≥I 1i(max)By setting the third input current reference value I 30 To ensure that the battery charger can work at maximum power.

[0090] It should be noted that Figure 5 , Figure 6 , Figure 7 In the embodiment, the first control value, the second control value, and the third control value are all set to the same control amount, but the present invention is not limited thereto. In some embodiments, the first control value C1, the second control value C2, and the third control value C3 can also be set according to different control amounts. For example, the first control value C1 can be set to the first output power reference value P 10 , the second control value C2 can be set to the second input voltage reference value U 20 The third control value can be set to the third input current reference value I 30 .

[0091] That is to say, according to different working conditions of the battery 100, the control unit 110 can control the input current of the capacitor charger 200, thereby adjusting the output power of the capacitor charger 200, and further realizing the charging strategy of the capacitor charger 200 under different states, thereby improving the reliability of the operation of the high-voltage generating device 10.

[0092] Specifically, Figure 8 As shown, before t0, the battery is in state III (normal state). At t0, the control unit 110 detects that the battery 100 is too low or undervoltage, and switches the battery 100 from state I to state II (low power state). The above three control logics (output power, input voltage and input current) using the second control value can all reduce the input current of the capacitor charger 200 and stabilize the input current of the battery charger 300 at the rated output current I 0o(max) When the input current is stable, less energy flows into the battery 100, and the battery 100 can slowly recover from state II (low power state) until it enters state III (normal state).

[0093] For example, at time t1, the control unit 110 determines that the battery 100 fails, that is, the moment when the battery 100 switches from state III (normal state) to state I (fault state). Since the battery bus 102 lacks the battery 100 as voltage support, the above three control logics (output power, input voltage and input current) using the first control value can all cause the input voltage of the capacitor charger 200 to drop, the output power to drop, and after time t2, the input current is stable and less than the rated output current I of the battery charger 300. 0o(max)After that, the system voltage rises and finally stabilizes near the low voltage reference value (input voltage control) or the maximum battery voltage (input current control or output power control).

[0094] In one embodiment, the control unit 110 can obtain the fault and power information of the battery 100 through the battery management system. In other embodiments, the control unit 110 can obtain the input voltage U obtained by sampling the capacitor charger 200 in the current sampling period through a voltage acquisition circuit (such as a voltage sensor, a resistance sampling circuit, etc.). B And the input voltage U obtained by sampling in the previous sampling period B ’ The input voltages sampled in two adjacent sampling periods are subtracted and the absolute value is taken to obtain the difference result |△U B |. The difference result |△U B |With preset change reference value △U Bref For comparison, if |△U B |>△U Bref , it is determined that the voltage change of the battery bus 102 is too large, that is, the battery 100 is in a faulty condition. After the battery is disconnected from the bus 102 and it is determined that the battery 100 is faulty, the first control value C1 is selected. If the difference result is less than or equal to the preset change reference value, it is determined that the battery 100 is not faulty. Among them, the input voltage of the capacitor charger 200 and is the terminal voltage of the battery.

[0095] Furthermore, if |△U B |≤△U Bref After confirming that the battery is not faulty, the input voltage U B With the preset voltage reference value U up If the input voltage U B Less than the preset voltage reference value U up , that is U B up , it is determined that the power of the battery 100 is too low, and the second control value C2 is selected. If the input voltage sampled in the current sampling period is greater than or equal to the preset voltage reference value, that is, U B ≥U up , it is determined that the power of the battery 100 is normal, and the third control value C3 is selected. In one embodiment, the preset voltage reference value may be 10% of the rated voltage of the battery 100. In one embodiment, the time of a sampling cycle may be set according to actual needs, for example, 100 μs.

[0096] ​In one embodiment, the output current and output voltage of the capacitor charger 200 can also be obtained through the output current sampling 201 and the output voltage sampling 202. In one embodiment, the output current sampling 201 can be a current sensor. The output voltage sampling 202 can be a voltage sensor or a resistance sampling circuit.

[0097] Furthermore, Fig. 9 FIG. 1 is a control block diagram of a complete capacitor charger according to an embodiment of the present invention. Fig. 9 As shown, in one embodiment, the control unit 110 compares the output voltage of the capacitor charger 200 with the output voltage reference to generate an output voltage operation signal. The control unit 110 compares the output voltage operation signal with the output current of the capacitor charger 200 as the output current reference to generate an output current operation signal; at the same time, the output current operation signal and the state operation signal (output of the output power loop) can be output in competition. Among them, the output power is used as an illustration in this figure, that is, different output power reference values ​​are loaded for control according to the battery state; in other embodiments, the input voltage or input current can also be selected for control.

[0098] Fig.10 FIG. 1 is a control block diagram of a complete capacitor charger according to another embodiment. Fig.10 As shown, the control unit 110 can use the state operation signal (output of the input voltage loop) as the output current reference to compare with the output current of the capacitor charger 200, and generate an output current operation signal. At the same time, the output voltage of the capacitor charger 200 can be compared with the output voltage reference by the control unit 110, and an output voltage operation signal can be generated. The output voltage operation signal and the output current operation signal are then output in competition. That is, between the output voltage operation signal and the output current operation signal, the stronger signal is output. Among them, the input voltage is used as an illustration in this figure, that is, different input voltage reference values ​​are loaded for control according to the battery status; in other embodiments, the input power or input current can also be selected for control.

[0099] The present application adopts the adaptive power supply method steps of the above embodiment to adaptively control the capacitor charger 200 to adopt different charging strategies according to the different working conditions of the battery 100, thereby ensuring that the high-voltage generating device 10 operates in the optimal state, improving the reliability of operation, and further improving the stability of the X-ray machine.

[0100] Further, in some embodiments, the control unit 110 includes a system controller and a capacitor charging controller. The system controller is electrically connected to the battery 100. The system controller obtains the operating information of the battery 100 through the battery management system. The operating information of the battery includes: fault information, battery voltage, battery current and SOC (State of Charge) information, etc. And the system controller determines whether the battery is in a fault state, a low power state or a normal state according to the operating information of the battery 100. The capacitor charging controller is electrically connected to the capacitor charger 200, and communicates and exchanges information with the system controller. The capacitor charging controller is used to sample the circuit parameter information of the capacitor charger 200, and performs corresponding operations according to the state of the battery to control the capacitor charger. For example, the capacitor charging controller is used to sample the output power, input voltage or input current of the capacitor charger 200, etc.

[0101] Furthermore, the system controller and the capacitor charging controller are connected in communication, exchange information with each other, and coordinate work with each other. Among them, the system controller communicates directly with the battery management system to obtain comprehensive battery information, and can obtain all the information required for judgment, such as battery voltage, current, SOC, and fault status. However, the communication interval is generally long, and there is a long delay in communication, which makes the information update speed slow. In practice, the battery failure may occur before the battery communicates with the system controller, and the voltage of the battery bus 102 will drop due to power imbalance, causing the system to crash, or trigger more serious protection, which will seriously affect the system stability and user experience. Therefore, the capacitor charging controller can be used to make a supplementary judgment on the battery state. Because the remaining capacity of the battery is positively correlated with the voltage of the battery bus 102 to a certain extent, the capacitor charging controller can obtain the battery terminal voltage by sampling from the battery bus 102. By comparing whether the battery bus voltage change rate is too large or setting a voltage threshold to determine whether the battery SOC is too low, the battery state is further judged. However, the method of simply sampling the voltage for judgment has poor accuracy and the battery bus voltage is easily affected by the real-time current, so the accuracy is poor and it is easy to cause misjudgment. Therefore, the capacitor charging controller and the system controller need to develop a suitable collaborative working mechanism to maximize their strengths and minimize their weaknesses.

[0102] Taking the control unit 110 including the system controller and the capacitor charging controller as an example, the state diagram of the above three state switching is as follows: Fig.11 According to the transition process between states, it can be divided into the following situations:

[0103] ①Battery normal state -> battery fault state: When the system controller detects that the battery is in a fault state, it directly switches the program to the battery fault state. At the same time, the system controller sends a command to the capacitor charging controller, causing the capacitor charging controller to synchronously enter the fault state, so that the capacitor charging controller adjusts the control value to the first control value.

[0104] In some embodiments, the capacitor charging controller detects the rate of change of the battery bus 102 voltage in real time. If the rate of change is too large, it switches to a fault state, and the control value is adjusted from the third control value to the first control value. After that, the signal of the fault state is reported to the system controller (this signal can be fed back with only a 0 / 1 signal without the need for a complex communication protocol). After receiving the report of the fault state, the system controller will reconfirm the fault state of the battery the next time it communicates with the battery. If the battery does enter a fault state, the program state is switched to a battery fault state. Otherwise, the program state is kept as a normal battery state, and at the same time, an instruction is issued to the capacitor charging controller to restore its control value to the third control value.

[0105] ②Battery fault state -> battery normal state: The system controller periodically communicates with the battery. When the battery state is detected to be non-fault state (normal or low battery), the program state is switched to the battery normal state. At the same time, the switching instruction (this instruction can be sent as a 0 / 1 signal without the need for a complex communication protocol) is sent to the capacitor charging controller. After receiving the instruction signal, the capacitor charging controller switches to the normal state and adjusts the control value from the first control value to the third control value.

[0106] ③Battery normal state -> battery low power state: The system controller periodically communicates with the battery. When it detects that the battery SOC is less than the preset low power threshold, it switches the program state to the battery low power state. At the same time, the switching instruction (this instruction can be sent as a 0 / 1 signal without the need for a complex communication protocol) is sent to the capacitor charging controller. After receiving the instruction signal, the capacitor charging controller switches to the low power state and adjusts the control value from the third control value to the second control value.

[0107] ④Battery low power state -> battery normal state: The system controller periodically communicates with the battery. When it detects that the battery SOC is greater than the preset threshold for releasing low power (slightly greater than the low power threshold), the program state is switched to the battery normal state. At the same time, the switching instruction (this instruction can be sent as a 0 / 1 signal without the need for a complex communication protocol) is sent to the capacitor charging controller. After receiving the instruction signal, the capacitor charging controller switches to the normal state, and the control value is adjusted from the second control value to the third control value.

[0108] ⑤Battery low power state -> battery fault state: The system controller periodically communicates with the battery. When the battery is detected to be in a fault state, the program state is switched to the battery fault state. At the same time, the switching instruction (this instruction can be sent as a 0 / 1 signal without the need for a complex communication protocol) is sent to the capacitor charging controller. After receiving the instruction signal, the capacitor charging controller switches to the fault state, and the control value is adjusted from the second control value to the first control value.

[0109] ⑥Battery normal status -> Battery normal status: When the battery status obtained by the system controller through communication is normal, the battery is kept in normal status.

[0110] ⑦Battery fault state -> Battery fault state: When the battery state obtained by the system controller through communication is faulty (including failure to communicate with the battery), the battery fault state is maintained.

[0111] ⑧Battery low power state -> Battery low power state: When the SOC obtained by the system controller communication is not greater than the preset low power release threshold, the battery low power state is maintained.

[0112] Finally, the battery failure state -> battery low power state, in actual use, this change process has no direct jump possibility. This change process is indirectly realized through ②+③: in one communication, the system controller obtains the battery normal information and low power information. In the state conversion process, it first converts to the normal state, then to the low power state, and finally, based on the low power state, issues an instruction to the capacitor charger 200 to adjust its control value from the first control value to the second control value.

[0113] It should be noted that in some embodiments, the battery may be divided into only two working states according to the battery information, for example, to determine whether the battery is normal or faulty. That is, in some cases, the low power state of the battery may not be considered or not considered separately. At this time, it is only necessary to select the first control value and the third control value according to whether the battery is faulty or normal. Therefore, it may only be necessary to perform judgments ① and ②, and this case is not limited to this.

[0114] It should be noted that, in some embodiments, the capacitor charging controller can learn the state of the battery by communicating with the system controller, select a corresponding control value, and adjust the working state of the capacitor charger by calculating the circuit parameter information and the corresponding control value. In other embodiments, the system controller also selects a corresponding control value according to the state of the battery, and sends the corresponding control value to the capacitor charging controller by communication, and the capacitor charging controller calculates the signal according to the received control value and circuit parameter information to adjust the working state of the capacitor charger.

[0115] To sum up, regardless of whether the high-voltage generating device is connected to the grid or off-grid, the adaptive power supply method of the present application can adaptively control the capacitor charger 200 to adopt different charging strategies according to the different working conditions of the battery 100, thereby ensuring that the high-voltage generating device 10 operates in the optimal state, improving the reliability of operation, and thereby improving the stability of the X-ray machine.

[0116] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0117] The above embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the attached claims.

Claims

1. An adaptive power supply method for a mobile X-ray machine, characterized in that: include: Obtaining operating information of the battery to determine the state of the battery; If it is determined that the battery is in a fault state, selecting a first control value; If it is determined that the battery is not faulty, then determining whether the remaining power of the battery is less than a low power threshold, if so, determining that the battery is in a low power state and selecting a second control value, if not, determining that the battery is in a normal state and selecting a third control value; Acquire circuit parameter information of the capacitor charger, and adjust the working state of the capacitor charger based on the circuit parameter information and the first control value or the second control value or the third control value; The circuit parameter information includes input power, output power, input voltage, input current and output current of the capacitor charger; The adjusting the working state of the capacitor charger based on the circuit parameter information and the first control value or the second control value or the third control value includes: If the battery is in the fault state, the first control value is set to a first output power reference value, a first input voltage reference value or a first input current reference value, and the circuit parameter information is differentiated from the corresponding reference value, and a state operation signal is obtained according to the difference result and a preset control algorithm to adjust the working state of the capacitor charger.

2. The adaptive power supply method for a mobile X-ray machine according to claim 1, characterized in that: The first output power reference value is set according to the rated output power of the battery charger; the first input voltage reference value is set according to the maximum voltage of the battery; and the first input current reference value is set according to the rated output current of the battery charger.

3. The adaptive power supply method for a mobile X-ray machine according to claim 1, characterized in that: If the battery is in a low-battery state, the second control value is set to a second output power reference value, a second input voltage reference value or a second input current reference value, and the circuit parameter information is differentiated from the corresponding reference value. The state operation signal is obtained according to the difference result and a preset control algorithm to adjust the working state of the capacitor charger.

4. The adaptive power supply method for a mobile X-ray machine according to claim 3, characterized in that: The second output power reference value is set according to the rated output power of the battery charger; the second input voltage reference value is set according to the minimum voltage of the battery; and the second input current reference value is set according to the rated output current of the battery charger.

5. The adaptive power supply method for a mobile X-ray machine according to claim 1, characterized in that: If the battery is in a normal state, the third control value is set to a third output power reference value, a third input voltage reference value or a third input current reference value, and the circuit parameter information is differentiated from the corresponding reference value, and a state operation signal is obtained according to the difference result and a preset control algorithm to adjust the working state of the capacitor charger.

6. The adaptive power supply method for a mobile X-ray machine according to claim 5, characterized in that: The third output power reference value is set according to the output power upper limit value of the capacitor charger; the third input voltage reference value is set according to the minimum voltage of the battery; and the third input current reference value is set according to the rated input current of the capacitor charger.

7. The adaptive power supply method for a mobile X-ray machine according to claim 1, characterized in that: The obtaining of the operating information of the battery refers to: obtaining the operating information of the battery through a battery management system; the operating information of the battery includes fault information, battery voltage, battery current, and SOC information.

8. The adaptive power supply method for a mobile X-ray machine according to claim 1, characterized in that: The step of obtaining the operating information of the battery and determining the state of the battery comprises: Acquire the input voltage of the capacitor charger sampled in the current sampling period and the input voltage sampled in the previous sampling period; Subtracting the input voltages obtained by sampling in two adjacent sampling periods to obtain a difference result; If the absolute value of the difference result is greater than a preset change reference value, it is determined that the battery is in a fault state and the first control value is selected; If the absolute value of the difference result is less than or equal to the preset change reference value, it is determined that the battery is not faulty, and the input voltage sampled in the current sampling period is compared with the preset voltage reference value. If the input voltage sampled in the current sampling period is less than the preset voltage reference value, it is determined that the battery is in a low power state, and the second control value is selected; If the input voltage sampled in the current sampling period is greater than or equal to the preset voltage reference value, it is determined that the battery is in a normal state and the third control value is selected.

9. The adaptive power supply method for a mobile X-ray machine according to claim 1, 3 or 5, characterized in that: Also includes: Sampling the output voltage and output current of the capacitor charger; Comparing the output voltage of the capacitor charger with an output voltage reference to generate an output voltage operation signal; The output voltage operation signal is used as an output current reference to compare with the output current of the capacitor charger, and an output current operation signal is generated and output in competition with the state operation signal.

10. The adaptive power supply method for a mobile X-ray machine according to claim 1, 3 or 5, characterized in that: Also includes: Sampling the output voltage and output current of the capacitor charger; Compare the state operation signal as an output current reference with the output current of the capacitor charger to generate an output current operation signal; The output voltage of the capacitor charger is compared with an output voltage reference to generate an output voltage operation signal and compete with the output current operation signal for output.

11. An adaptive power supply method for a mobile X-ray machine, characterized in that: include: Get battery operation information; determining whether the battery is faulty, and if so, selecting a first control value; If it is determined that the battery is not faulty, selecting a third control value; Acquire circuit parameter information of the capacitor charger, and adjust the working state of the capacitor charger based on the circuit parameter information and the first control value or the third control value; The circuit parameter information includes input power, output power, input voltage, input current and output current of the capacitor charger; The adjusting the working state of the capacitor charger based on the circuit parameter information and the first control value or the third control value includes: If the battery fails, the first control value is set to a first output power reference value, a first input voltage reference value or a first input current reference value, and the circuit parameter information is subtracted from the corresponding reference value, and a state operation signal is obtained based on the difference result and a preset control algorithm to adjust the working state of the capacitor charger.

12. An adaptive power supply method for a mobile X-ray machine, characterized in that: include: Get battery operation information; Determine whether the battery is normal, and if normal, select a third control value; If it is abnormal, the first control value is selected; Acquire circuit parameter information of the capacitor charger, and adjust the working state of the capacitor charger based on the circuit parameter information and the first control value or the third control value; The circuit parameter information includes input power, output power, input voltage, input current and output current of the capacitor charger; The adjusting the working state of the capacitor charger based on the circuit parameter information and the first control value or the third control value includes: If the battery is abnormal, the first control value is set to a first output power reference value, a first input voltage reference value or a first input current reference value, and the circuit parameter information is subtracted from the corresponding reference value, and a state operation signal is obtained according to the difference result and a preset control algorithm to adjust the working state of the capacitor charger.

13. A high voltage generating device, characterized in that: include: A battery charger, wherein the input end of the battery charging module is used for electrically connecting to a power grid; a battery, the output terminal of the battery charger being electrically connected to the battery; a capacitor charger, wherein an input terminal of the capacitor charger is electrically connected to the battery; An energy storage capacitor, the output end of the capacitor charger being electrically connected to the energy storage capacitor; a high-voltage conversion circuit, electrically connected between the energy storage capacitor and the X-ray generating unit, to supply power to the X-ray generating unit; as well as A control unit, electrically connected to the battery and the capacitor charger, is used to execute the adaptive power supply method for the high voltage generating device according to any one of claims 1 to 7.

14. The high voltage generating device according to claim 13, characterized in that: The control unit includes a system controller and a capacitor charging controller. The system controller is electrically connected to the battery, the capacitor charging controller is electrically connected to the capacitor charger, and the system controller and the capacitor charging controller are in communication connection with each other.

15. The high voltage generating device according to claim 14, characterized in that: The system controller obtains the operating information of the battery through the battery management system, and determines whether the battery is in a fault state, a low power state or a normal state according to the operating information of the battery. The operating information includes: fault information, battery voltage, battery current and SOC information.

16. The high voltage generating device according to claim 15, characterized in that: The capacitor charging controller learns the state of the battery by communicating with the system controller, selects a corresponding control value, makes a difference between the circuit parameter information and the corresponding control value, and obtains a state operation signal according to a preset control algorithm to adjust the working state of the capacitor charger.

17. The high voltage generating device according to claim 15, characterized in that: The system controller selects a corresponding control value according to the state of the battery, and sends the control value to the capacitor charging controller through communication. The capacitor charging controller makes a difference between the circuit parameter information and the corresponding control value, and obtains a state operation signal according to a preset control algorithm to adjust the working state of the capacitor charger.

18. The high voltage generating device according to claim 16 or 17, characterized in that: The capacitor charging controller samples the input voltage of the capacitor charger. When detecting that the change rate of the input voltage is greater than a preset change reference value, the capacitor charging controller selects a first control value for operation and reports fault information to the system controller.

19. The high voltage generating device according to claim 18, characterized in that: The system controller re-determines the state of the battery according to the fault information sent by the capacitor charging controller and the operation information of the battery, and sends the battery state information or the corresponding control value to the capacitor charging controller.

Images