Power supply module of formation and capacity grading equipment and power supply module control system

Abstract

The utility model provides a power supply module of formation and capacity grading equipment and a power supply module control system. The power supply module comprises a DSP control module, a buck-boost module, a current detection module, a voltage detection module and an anti-sparking and anti-reverse connection module. The voltage detection module detects voltage values of the power supply and the battery and transmits a detection result to the DSP control module; the current detection module detects current values of the power supply and the battery and transmits a detection result to the DSP control module; the DSP control module sends a control instruction according to the voltage value and the current value; the buck-boost module is electrically connected with the DSP control module, the battery and the power supply and is used for adjusting the voltage of the battery and the power supply according to a control instruction of the DSP control module; and the anti-sparking and anti-reverse-connection module is connected between the buck-boost module and the battery, and is used for preventing sparking when the battery is installed and preventing short circuit when the battery is reversely connected. According to the power supply module of the formation and capacity grading equipment, sparking and reverse connection can be prevented, and the safety is higher.

Description

Technical Field

[0001] This application belongs to the technical field of battery manufacturing and testing, and more specifically, relates to a power module and a power module control system for a formation and grading equipment. Background Art

[0002] The formation and grading power module used in the related art's battery formation and grading equipment serves the popular cylindrical batteries at that time. When installing and connecting the battery, it is easy to generate sparks during connection or cause a short circuit when the battery is connected reversely, resulting in low safety.

[0003] Therefore, a new technology is needed to solve the problem of low safety of the formation and grading power module in the prior art. Summary of the Invention

[0004] An embodiment of this application provides a power module for a formation and grading equipment to improve safety.

[0005] The technical solution adopted in the embodiment of this application is: providing a power module for a formation and grading equipment, which is used to control the charging and discharging of a battery. The power module includes a DSP control module, a buck-boost module, a current detection module, and a voltage detection module;

[0006] The voltage detection module detects the voltage values of the power supply and the battery and sends the detection results to the DSP control module;

[0007] The current detection module detects the current values of the power supply and the battery and transmits the detection results to the DSP control module;

[0008] The DSP control module is electrically connected to the buck-boost module. The DSP control module issues a control instruction according to the voltage value and the current value;

[0009] The buck-boost module is electrically connected to the DSP control module, the battery, and the power supply, and is used to adjust the voltages of the battery and the power supply according to the control instruction of the DSP control module;

[0010] The anti-spark and anti-reverse connection module is connected between the buck-boost module and the battery, and is used to prevent sparks during battery installation and prevent short circuits when the battery is connected reversely.

[0011] Further, the anti-spark and anti-reverse connection module includes a plurality of forward MOS transistors and a plurality of reverse MOS transistors;

[0012] The drains of the forward MOS transistors are all connected to the current detection module, and the gates of the forward MOS transistors are all connected to the DSP control module;

[0013] The drain of each of the reverse MOS transistors is connected to the battery, and the gate of each of the forward MOS transistors is connected to the DSP control module;

[0014] The source of each of the forward MOS transistors is connected to the source of each of the reverse MOS transistors;

[0015] When the current detection module detects current in the battery, the DSP control module issues an alarm message, or when the battery is installed and the current detection module does not detect current in the battery, the DSP control module issues an open signal to the gates of the forward MOS transistor and the reverse MOS transistor.

[0016] Further, the buck-boost module includes a boost circuit and a buck circuit. The boost circuit is connected to the power supply, the battery, and the DSP control module. The buck circuit is connected to the power supply, the battery, and the DSP control module. The boost circuit and the buck circuit can be alternately turned on and off and start and stop according to the control instruction to change the current value and the voltage value.

[0017] Further, the boost circuit includes an upper arm circuit and an inductor component. The upper arm circuit is connected to the positive pole of the power supply, the inductor component, and the DSP control module, and is used to turn on or off according to the control instruction to control the current flowing to the inductor component. The inductor component is connected to the battery;

[0018] The buck circuit includes a lower arm circuit. The lower arm circuit is connected to the negative pole of the power supply, the inductor component, and the DSP control module, and is used to turn on or off according to the control instruction to maintain the continuity of the inductor current, and the lower arm circuit is alternately turned on with the upper arm circuit.

[0019] Further, the upper arm circuit includes a first MOS transistor and a second MOS transistor;

[0020] The drain of the first MOS transistor is connected to the positive pole of the power supply. The source of the first MOS transistor is connected to the first end of the inductor component and the DSP control module. The gate of the first MOS transistor is connected to the DSP control module;

[0021] The drain of the second MOS transistor is connected to the positive pole of the power supply. The source of the second MOS transistor is connected to the first end of the inductor component and the DSP control module. The gate of the second MOS transistor is connected to the DSP control module;

[0022] The second end of the inductor component is connected to the battery.

[0023] Further, the boost circuit further includes a first freewheeling circuit. One end of the first freewheeling circuit is connected to the positive electrode of the power supply, and the other end is connected to the first end of the inductor assembly. The first freewheeling circuit conducts when going from the first end to the positive electrode, and does not conduct when going from the positive electrode to the first end.

[0024] Further, the lower arm circuit includes a third MOS transistor and a fourth MOS transistor;

[0025] The drain of the third MOS transistor is connected to the first end of the inductor assembly. The source of the third MOS transistor is connected to the second end of the inductor assembly and the negative electrode of the power supply. The gate of the third MOS transistor is connected to the DSP control module;

[0026] The drain of the fourth MOS transistor is connected to the first end of the inductor assembly. The source of the fourth MOS transistor is connected to the second end of the inductor assembly and the negative electrode of the power supply. The gate of the fourth MOS transistor is connected to the DSP control module.

[0027] Further, the buck circuit further includes a second freewheeling circuit. One end of the second freewheeling circuit is connected to the second end of the power supply, and the other end is connected to the first end of the inductor assembly. The second freewheeling circuit conducts when going from the second end to the first end, and does not conduct when going from the first end to the negative electrode.

[0028] Further, a control and protection module is further included. The control and protection module is connected to the buck-boost module and the DSP module, and is configured to determine whether to send an alarm message or send a power-off control instruction according to the current value and the voltage value.

[0029] The embodiment of the present application further provides a power module control system for a formation and grading equipment, including a master computer and a plurality of power modules of the formation and grading equipment as described above;

[0030] The power module further includes a communication module. The DSP control module is connected and communicates with the master computer through the communication module. Each DSP control module is interconnected and communicates with each other through each communication module. Each power module is connected to one or more of the batteries.

[0031] The beneficial effects of the power supply module of the formation and grading equipment provided by the embodiments of the present application are as follows: In the power supply module of the formation and grading equipment of the embodiments of the present application, a DSP control module, a buck-boost module, a current detection module, and a voltage detection module are provided. The voltage and current of the power supply and the battery can be detected. The DSP control module can adjust the voltage and current through the buck-boost module according to the process requirements, so that the voltage and current meet the requirements, and then charge or discharge the battery. Since a fire prevention and reverse connection prevention module is provided between the buck-boost module and the battery, it can avoid sparking when installing the battery and prevent short circuit when connected reversely, with higher safety. Brief Description of the Drawings

[0032] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0033] Figure 1 It is the control block diagram of the power supply module of the formation and grading equipment provided by the embodiments of the present application;

[0034] Figure 2 It is the circuit diagram of the buck-boost module provided by the embodiments of the present application;

[0035] Figure 3 It is the circuit diagram of the fire prevention and reverse connection prevention module provided by the embodiments of the present application;

[0036] Figure 4 It is the control block diagram of the power supply module control system provided by the embodiments of the present application.

[0037] Among them, the reference numerals in the drawings are as follows:

[0038] 10, DSP control module;

[0039] 20, buck-boost module; 21, boost circuit; 211, upper arm circuit; 2111, first MOS tube; 2112, second MOS tube; 2113, first freewheeling circuit; 21131, first resistor; 21132, first diode; 21133, first capacitor; 212, inductance component; 22, buck circuit; 221, lower arm circuit; 2211, third MOS tube; 2212, fourth MOS tube; 223, second freewheeling circuit; 2231, second resistor; 2232, second diode; 2233, second capacitor; 224, third capacitor;

[0040] 30. Current detection module; 40. Voltage detection module; 50. Anti-spark and reverse connection prevention module; 51. Forward MOS transistor; 52. Reverse MOS transistor; 60. Control and protection module; 70. Communication module; 80. Battery; 90. Power supply; 91. Positive electrode; 92. Negative electrode; 100. Power supply module; 200. Middle computer. Detailed implementation manners

[0041] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application clearer and more understandable, the present application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0042] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0043] It should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present application.

[0044] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, "a plurality of" means two or more unless otherwise specifically defined.

[0045] Please refer to Figure 1 , and now the power supply module 100 of the formation and grading equipment provided by the embodiment of the present application will be described. The embodiment of the present application provides a power supply module 100 of a formation and grading equipment, which is used to control the charging and discharging of the battery 80. The power supply module 100 includes a DSP control module 10, a buck-boost module 20, a current detection module 30 and a voltage detection module 40.

[0046] Refer to Figure 1, the voltage detection module 40 detects the voltage values of the power supply 90 and the battery 80 and sends the detection results to the DSP control module 10. The voltage detection module 40 respectively detects the voltages of the power supply 90 and the battery 80, and sends the voltage values to the DSP control module 10. The DSP control module 10 compares the received voltages with the preset voltages, and controls charging and discharging according to the comparison results.

[0047] Refer to Figure 1 , specifically, the voltage detection module 40 may include a first voltage detection module and a second voltage detection module. The first voltage detection module is used to detect the voltage of the power supply 90, and the first voltage detection module is used to detect the voltage of the battery 80. These two voltage detection modules 40 respectively detect the voltages of the power supply 90 and the battery 80, and send the measured voltage values to the DSP control module 10.

[0048] The current detection module 30 detects the current values of the power supply 90 and the battery 80 and transmits the detection results to the DSP control module 10. The current detection module 30 respectively detects the currents of the power supply 90 and the battery 80, and sends the current values to the DSP control module 10. The DSP control module 10 compares the received currents with the preset currents, and controls charging and discharging according to the comparison results.

[0049] Refer to Figure 1 , specifically, the current detection module 30 may include a first current detection module and a second current detection module. The first current detection module is used to detect the current of the power supply 90, and the first current detection module is used to detect the current of the battery 80. These two current detection modules 30 respectively detect the currents of the power supply 90 and the battery 80, and send the measured current values to the DSP control module 10.

[0050] The DSP control module 10 is electrically connected to the buck-boost module 20, and the DSP control module 10 issues control instructions according to the voltage values and current values. The DSP control module 10 can preset the current values and voltage values. Only when the input voltage, the voltage value and current value of the battery 80 all reach the preset values, can the charging and discharging of the battery 80 be carried out, and the charging and discharging process is controlled according to the actual voltage values and current values during the charging and discharging process. The main function of the DSP control module 10 is program processing, setting control parameters, setting formation, grading, testing process steps, etc. It can issue control instructions according to the voltage and current of the power supply and the voltage and current of the battery 80, so that the voltages and currents of the power supply 90 and the battery 80 change towards the preset values, and then control the process of formation and grading to charge and discharge the battery 80.

[0051] The buck-boost module 20 is electrically connected to the DSP control module 10, the battery 80, and the power supply 90, and is used to adjust the voltages of the battery 80 and the power supply 90 according to the control instructions of the DSP control module. After the voltage and current meet the process requirements, the battery is charged and discharged.

[0052] The anti-spark and anti-reverse connection module 50 is connected between the buck-boost module 20 and the battery 80. The anti-spark and anti-reverse connection module 50 is used to prevent sparking during the installation of the battery 80 and short circuit when the battery 80 is connected reversely. Since the anti-spark and anti-reverse connection module is provided between the buck-boost module and the battery, it can avoid sparking during the installation of the battery and prevent short circuit when connected reversely, with higher safety.

[0053] Refer to Figure 1 and Figure 2 , the anti-spark and anti-reverse connection module 50 includes a plurality of forward MOS transistors 51 and a plurality of reverse MOS transistors 52; the drains of the forward MOS transistors 51 are all connected to the current detection module 30, and the gates of the forward MOS transistors 51 are all connected to the DSP control module 10; the drains of the reverse MOS transistors 52 are all connected to the battery 80, and the gates of the forward MOS transistors are all connected to the DSP control module 10; the sources of the forward MOS transistors 51 are connected to the sources of the reverse MOS transistors 52; the DSP control module 10 issues an alarm message when the current detection module 30 detects current in the battery 80, or issues an open signal to the gates of the forward MOS transistors 51 and the reverse MOS transistors 52 when the battery 80 is installed and the current detection module 30 does not detect current in the battery 80. When connecting the battery 80, the MOS transistors are turned off and there is no current in the battery 80 circuit, so anti-sparking can be achieved; when the battery 80 is connected reversely, the MOS transistors are turned off and there is no current in the battery 80 circuit. The DSP control module 10 detects that the voltage is negative, issues a warning and prompts the operator that the battery 80 is connected reversely. In both cases, there is no current in the battery 80 circuit and no damage to the hardware circuit will be caused. When the connection is completed and the battery 80 is not connected reversely, the DSP control module 10 issues a signal through G1C to turn on the MOS transistors so that normal operation can be carried out.

[0054] Refer to Figure 1, the buck-boost module 20 includes a boost circuit 21 and a buck circuit 22. The boost circuit 21 is connected to the power supply 90, the battery 80, and the DSP control module 10. The buck circuit 22 is connected to the power supply 90, the battery 80, and the DSP control module 10. The boost circuit 21 and the buck circuit 22 can be alternately turned on, and start and stop according to the control instruction to change the current value and voltage value. Both the boost circuit 21 and the buck circuit 22 are connected to the power supply 90 and the battery 80. Under the action of the control instruction of the DSP control module 10, the boost circuit 21 and the buck circuit 22 can be alternately turned on, so as to control the rise and fall of the voltages of the power supply 90 and the battery 80, and make the voltage reach the set voltage value. The voltage of the input voltage and the voltage of the battery 80 are used as a base number. On this base number, the larger the voltage, the larger the current; the smaller the voltage, the smaller the current. That is, when the rise and fall of the voltage are controlled, the rise and fall of the current can also be controlled to reach the preset current value.

[0055] Since the boost circuit 21 and the buck circuit 22 are alternately turned on according to the control instruction of the DSP control module 10, when the boost circuit 21 is turned on, the buck current is disconnected, and when the boost circuit 21 is disconnected, the buck current is turned on. That is, within the same time, the duty ratio of the conduction time of the boost circuit 21 and the buck current will affect the actual voltage magnitude. That is to say, the duty ratios of the boost circuit 21 and the buck circuit 22 can be controlled through the control instruction of the DSP control module 10, so as to output the set current.

[0056] Based on the above structure, the current and voltage can be regulated through the buck-boost module 20, which can make the power module 100 compatible with the requirements of the small-capacity cylindrical battery 80 and the soft-pack battery 80 for the smaller current and voltage during charging and discharging, and can also adapt to the requirements of the larger current and voltage of the cylindrical battery 80 and the square lithium battery 80 on new energy electric vehicles.

[0057] Refer to Figure 2 , the boost circuit 21 includes an upper-arm circuit 211 and an inductor component 212. The upper-arm circuit 211 is connected to the positive electrode 91 of the power supply 90, the inductor component 212, and the DSP control module 10, and is used to conduct or turn off according to the control instruction to control the current flow to the inductor component 212. The inductor component 212 is connected to the battery 80. The upper-arm circuit 211 is turned on according to the control instruction, and the current from the positive electrode 91 of the power supply 90 passes through the inductor component 212 and can be stored in the inductor component 212, the voltage increases, and the current returns to the negative electrode 92 of the power supply 90 from the lower-arm circuit 221 of the buck circuit 22 after passing through the inductor component 212. When the upper-arm current is disconnected, the energy stored in the inductor component 212 can be output from the lower-arm circuit 221 of the buck circuit 22 to the battery 80.

[0058] Refer to Figure 2The buck circuit 22 includes a lower-arm circuit 221. The lower-arm circuit 221 is connected to the negative electrode 92 of the power supply 90, the inductor component 212, and the DSP control module 10. It is used to conduct or turn off according to the control instruction to maintain the continuity of the inductor current, and the lower-arm circuit 221 and the upper-arm circuit 211 conduct alternately. The lower-arm circuit 221 is turned on according to the control instruction (at this time, the upper-arm circuit 211 is turned off), and the energy stored in the inductor component 212 is output to the battery 80 to achieve charging, and the voltage of the inductor component 212 decreases. If the battery 80 needs to discharge, the battery 80 current flows through the lower-arm current and returns to the negative electrode 92 of the power supply 90, and this negative electrode 92 can be the common negative electrode 92 or the ground.

[0059] Under the control of the control instruction of the DSP control module 10, the upper-arm circuit 211 and the lower-arm circuit 221 are alternately stopped and started. By controlling the duty cycle, the ratio of boost and buck is adjusted, so as to control the rise and fall of the voltage, and then control the magnitude of the current.

[0060] Refer to Figure 2 The upper-arm circuit 211 includes a first MOS transistor 2111 and a second MOS transistor 2112. The drain of the first MOS transistor 2111 is connected to the positive electrode 91 of the power supply 90, the source of the first MOS transistor 2111 is connected to the first end of the inductor component 212 and the DSP control module 10, and the gate of the first MOS transistor 2111 is connected to the DSP control module 10. The drain of the second MOS transistor 2112 is connected to the positive electrode 91 of the power supply 90, the source of the second MOS transistor 2112 is connected to the first end of the inductor component 212 and the DSP control module 10, and the gate of the second MOS transistor 2112 is connected to the DSP control module 10. The second end of the inductor component 212 is connected to the battery 80.

[0061] In the upper-arm circuit 211, the first MOS transistor 2111 and the second MOS transistor 2112 are connected in parallel and are both controlled by the DSP control module 10, and can be turned on and off simultaneously. When the first MOS transistor 2111 and the second MOS transistor 2112 are turned on, the current flows from the power supply 90 through these two MOS transistors, and then through the inductor component 212. The inductor component 212 stores energy, the voltage rises, and the current returns to the negative electrode 92 of the power supply 90 through the lower-arm circuit 221. When the first MOS transistor 2111 and the second MOS transistor 2112 are turned off, the inductor component 212 can release energy to charge the battery 80. If the battery 80 needs to discharge, the battery 80 current passes through the inductor component 212, and the inductor component 212 stores energy, and the current flows into the positive electrode 91 of the power supply. The longer the conduction time of the first MOS transistor 2111 and the second MOS transistor 2112, the higher the duty cycle, and the higher the voltage.

[0062] Refer to Figure 2, the boost circuit 21 further includes a first freewheeling circuit 2113. One end of the first freewheeling circuit 2113 is connected to the positive electrode 91 of the power supply 90, and the other end is connected to the first end of the inductor assembly 212. The first freewheeling circuit 2113 conducts when going from the first end to the positive electrode 91, and does not conduct when going from the positive electrode 91 to the first end. The freewheeling circuit plays a freewheeling role when the upper arm circuit 211 is turned off, and can protect the first MOS transistor 2111 and the second MOS transistor 2112. Specifically, the first freewheeling circuit includes a first resistor 21131, a first diode 21132, and a first capacitor 21133. The first resistor 21131 and the first diode 21132 are connected in parallel and one end is connected to the positive electrode 91 of the power supply 90, and the other end is connected to the first end of the inductor assembly 212 through the first capacitor 21133. The conduction direction of the first diode is from the first end of the inductor assembly 212 to the positive electrode 91 of the power supply 90.

[0063] Refer to Figure 2 , the lower arm circuit 221 includes a third MOS transistor 2211 and a fourth MOS transistor 2212. The drain of the third MOS transistor 2211 is connected to the first end of the inductor assembly 212, the source of the third MOS transistor 2211 is connected to the second end of the inductor assembly 212 and the negative electrode 92 of the power supply 90, and the gate of the third MOS transistor 2211 is connected to the DSP control module 10. The drain of the fourth MOS transistor 2212 is connected to the first end of the inductor assembly 212, the source of the fourth MOS transistor 2212 is connected to the second end of the inductor assembly 212 and the negative electrode 92 of the power supply 90, and the gate of the fourth MOS transistor 2212 is connected to the DSP control module 10. When the upper arm circuit 211 is conducting, the lower arm circuit 221 is turned off. At this time, the current passes through the inductor assembly 212 and then through the lower arm circuit 221 to reach the negative electrode 92 of the power supply. When the upper arm circuit 211 is disconnected, the third MOS transistor 2211 and the fourth MOS transistor 2212 of the lower arm circuit 221 are conducting, and the inductor assembly 212 releases energy to charge the battery 80, and the voltage drops. The longer the conduction time of the third MOS transistor 2211 and the fourth MOS transistor 2212, the higher the duty cycle, and the lower the voltage.

[0064] Refer to Figure 2, the buck circuit 22 further includes a second freewheeling circuit 223. One end of the second freewheeling circuit 223 is connected to the second end of the power supply 90, and the other end is connected to the first end of the inductor assembly 212. The second freewheeling circuit 223 conducts when going from the second end to the first end, and does not conduct when going from the first end to the negative electrode 92. The second freewheeling circuit 223 plays a freewheeling role when the lower arm circuit 221 is turned off, and can protect the third MOS transistor 2211 and the fourth MOS transistor 2212. Specifically, the second freewheeling current includes a second resistor 2231, a second diode 2232 and a second capacitor 2233. The second resistor 2231 and the second diode 2232 are connected in parallel and one end is connected to the first end of the inductor assembly 212, and the other end is connected to the negative electrode 92 of the power supply 90 through the first capacitor 21133. The conduction direction of the second diode is from the negative electrode 92 of the power supply 90 to the first end of the inductor assembly 212.

[0065] Referring to Figure 2 , the buck circuit 22 further includes a capacitor. The capacitor is located between the second end of the inductor assembly 212 and the negative electrode 92 of the power supply 90. This capacitor plays a role in smoothing the output. Since the upper arm circuit 211 and the lower arm circuit 221 are alternately conducting, the charging and discharging of the inductor assembly 212 to the battery 80 is also alternating. In order to reduce the drastic change of the current, this capacitor is set, which can make the current input to the battery 80 smoother. As shown in the figure, this capacitor is the third capacitor 224.

[0066] Referring to Figure 1 , the power supply module 100 further includes a control and protection module 60. The control and protection module 60 is connected to the buck-boost module 20 and the DSP control module, and is used to judge whether to send an alarm message or a power-off control instruction according to the current value and the voltage value. By collecting the current of the power supply 90, the voltage of the battery 80, and the temperature of the battery 80, the battery 80 can be charged and discharged with constant voltage, constant current, constant power, constant conductance, and constant temperature; if the collected signal exceeds the preset alarm signal, the protection signal module will perform corresponding alarm processing. Here, it is divided into warnings and errors, and the warning value and the error value can be specifically set. For example, for "over-temperature protection", the warning value is set to 50 °C and the error value is set to 60 °C. When it reaches 50 °C, the system will send an alarm, and the operator can judge whether to stop the operation of the power supply module 100 by himself; when it reaches 60 °C, the system will forcibly stop the operation of the power supply module 100.

[0067] In addition, the power module 100 also includes a plurality of signal amplifying modules, which are respectively connected to the voltage detection module 40 and the current detection module 30, and amplify the signals carrying the voltage value and the current value sent by the voltage detection module 40 and the current detection module 30 to the DSP control module 10, and then input them into the DSP control module 10. That is, the signal amplifying module is located between the voltage detection module 40 and the DSP control module 10, or the signal amplifying module is located between the current detection module 30 and the DSP control module 10.

[0068] The embodiment of the present application further provides a control system for a power module 100 of a chemical component capacity device, comprising a central computer 200 and a plurality of power modules 100 of the chemical component capacity device as described above;

[0069] The power module 100 also includes a communication module 70 . The DSP control module 10 is connected to and communicates with the intermediate computer 200 via the communication module 70 . Each DSP control module 10 is connected to and communicates with each other via each communication module 70 . Each power module 100 is connected to one or more batteries 80 .

[0070] Multiple power modules 100 exchange information through the communication module 70, and the central computer 200 controls each power module 100 as a whole. Each power module 100 can be connected to the same battery 80 or different batteries 80. When connected to different batteries 80, multiple batteries 80 can be charged and discharged at the same time. When connected to the same battery 80 for a long time, these power modules 100 are connected in parallel, which can increase the output supply to adapt to batteries 80 with larger currents. In other words, when the current of the battery 80 is large, a single power module 100 cannot meet the power and current requirements of the battery 80, then multiple power modules 100 can be expanded, and the battery 80 can be charged and discharged together in parallel. Therefore, the power modules 100 of the embodiments of the present application can be expanded and combined to have better adaptability.

[0071] The communication module 70 may be a CAN communication module.

[0072] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A power module for a battery-type device, used to control the charging and discharging of a battery, characterized in that: The power supply module includes a DSP control module, a buck-boost module, a current detection module, a voltage detection module, and an anti-spark and anti-reverse connection module; The voltage detection module detects the voltage values ​​of the power supply and the battery and sends the detection results to the DSP control module; The current detection module detects the current values ​​of the power source and the battery and transmits the detection results to the DSP control module; The DSP control module is electrically connected to the buck-boost module, and the DSP control module issues a control instruction according to the voltage value and the current value; The buck-boost module is electrically connected to the DSP control module, the battery and the power supply, and is used to adjust the voltage of the battery and the power supply according to the control instruction of the DSP control module; The anti-spark and anti-reverse connection module is connected between the buck-boost module and the battery, and is used to prevent sparks when the battery is installed and to prevent short circuits when the battery is reversely connected.

2. The power module of the chemical fractionation device according to claim 1, characterized in that: The anti-spark and anti-reverse connection module includes a plurality of forward MOS tubes and a plurality of reverse MOS tubes; The drain of each of the forward MOS tubes is connected to the current detection module, and the gate of each of the forward MOS tubes is connected to the DSP control module; The drain of each reverse MOS tube is connected to the battery, and the gate of each forward MOS tube is connected to the DSP control module; The source electrode of each of the forward MOS tubes is connected to the source electrode of each of the reverse MOS tubes; The DSP control module sends an alarm message when the current detection module detects that the battery has current, or sends an opening signal to the gates of the forward MOS tube and the reverse MOS tube when the battery is installed and the current detection module does not detect that the battery has current.

3. The power module of the chemical fractionation device according to claim 1, characterized in that: The buck-boost module includes a boost circuit and a buck circuit. The boost circuit is connected to the power supply, the battery and the DSP control module, and the buck circuit is connected to the power supply, the battery and the DSP control module. The boost circuit and the buck circuit can be turned on alternately and started and stopped according to the control instruction to change the current value and the voltage value.

4. The power module of the chemical fractionation device according to claim 3, characterized in that: The boost circuit includes an upper arm circuit and an inductor component, wherein the upper arm circuit is connected to the positive electrode of the power supply, the inductor component and the DSP control module, and is used to be turned on or off according to the control instruction to control the current to flow to the inductor component, and the inductor component is connected to the battery; The step-down circuit includes a lower arm circuit, which is connected to the negative electrode of the power supply, the inductor component and the DSP control module, and is used to be turned on or off according to the control instruction to maintain the continuity of the inductor current, and the lower arm circuit and the upper arm circuit are alternately turned on.

5. The power module of the chemical fractionation device according to claim 4, characterized in that: The upper arm circuit includes a first MOS tube and a second MOS tube; The drain of the first MOS transistor is connected to the positive electrode of the power supply, the source of the first MOS transistor is connected to the first end of the inductor component and the DSP control module, and the gate of the first MOS transistor is connected to the DSP control module; The drain of the second MOS tube is connected to the positive electrode of the power supply, the source of the second MOS tube is connected to the first end of the inductor component and the DSP control module, and the gate of the second MOS tube is connected to the DSP control module; The second end of the inductor component is connected to the battery.

6. The power module of the chemical fractionation device according to claim 4, characterized in that: The boost circuit also includes a first freewheeling circuit, one end of which is connected to the positive electrode of the power supply, and the other end is connected to the first end of the inductor component, the first freewheeling circuit is conductive when flowing from the first end to the positive electrode, and is not conductive when flowing from the positive electrode to the first end.

7. The power module of the chemical fractionation device according to claim 4, characterized in that: The lower arm circuit includes a third MOS tube and a fourth MOS tube; The drain of the third MOS tube is connected to the first end of the inductor component, the source of the third MOS tube is connected to the second end of the inductor component and the negative electrode of the power supply, and the gate of the third MOS tube is connected to the DSP control module; The drain of the fourth MOS tube is connected to the first end of the inductor component, the source of the fourth MOS tube is connected to the second end of the inductor component and the negative electrode of the power supply, and the gate of the fourth MOS tube is connected to the DSP control module.

8. The power module of the chemical fractionation device according to claim 7, characterized in that: The step-down circuit also includes a second freewheeling circuit, one end of the second freewheeling circuit is connected to the second end of the power supply, and the other end is connected to the first end of the inductor component, the second freewheeling circuit is conductive when flowing from the second end to the first end, and is not conductive when flowing from the first end to the negative electrode.

9. The power module of the chemical fractionation device according to claim 1, characterized in that: It also includes a control and protection module, which is connected to the buck-boost module and the DSP control module and is used to determine whether to issue an alarm message or a power-off control instruction based on the current value and the voltage value.

10. A power module control system for a chemical component capacity device, characterized in that: A power supply module comprising a mid-level computer and a plurality of chemical component capacity devices as claimed in any one of claims 1 to 9; The power module also includes a communication module, and the DSP control module is connected to and communicates with the intermediate computer via the communication module. Each of the DSP control modules is connected to and communicates with each other via each of the communication modules, and each of the power modules is connected to one or more of the batteries.

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