Electric-assist Bicycle Controller Detection Device

Abstract

Provided is an electric assist vehicle controller detection device, belonging to the field of electronic technology. The electric assist vehicle controller detection device includes: a detection main module, a current detection module, and a control processing module; the first input end of the detection main module is used to connect the device to be detected, the first output end and the second output end of the detection main module are respectively connected to the first input end and the second input end of the current detection module, the first output end, the second output end, and the third output end of the current detection module are respectively connected to the first input end, the second input end, and the third input end of the control processing module; the first control end of the control processing module is connected to the second input end of the detection main module. The effect of improving the detection efficiency and reliability of the controller can be achieved.

Description

Technical Field

[0001] The present application relates to the field of electronic technologies, and in particular, to a detection device for an electric bicycle controller. Background Art

[0002] With the development of science and technology, electric vehicles such as electric bicycles have become popular, bringing great convenience to people's travel. Devices such as motors, controllers, batteries, meters, and sensors are installed on electric bicycles to ensure their normal operation. Among them, the controller is an important device for controlling parameters such as the speed of the electric bicycle.

[0003] In the related art, during stages such as the production and manufacturing of the controller, it is necessary to detect the performance of the controller to ensure its normal operation when installed in the drive system of the electric bicycle. Generally, relevant technical personnel usually conduct manual detection on the controller, such as detecting parameters such as the standby current and load current of the controller.

[0004] However, the efficiency of manual detection is low, and mistakes are inevitable. Therefore, this solution has problems of low detection efficiency and poor detection reliability. Summary of the Invention

[0005] The purpose of the present application is to provide a detection device for an electric bicycle controller, which can achieve the effects of improving the detection efficiency and reliability of the controller.

[0006] The embodiments of the present application are implemented as follows:

[0007] In a first aspect of an embodiment of the present application, a detection device for an electric bicycle controller is provided. The detection device for the electric bicycle controller includes: a detection main module, a current detection module, and a control processing module;

[0008] The first input end of the detection main module is used to connect to the device to be detected. The first output end of the detection main module is connected to the first input end of the current detection module. The second output end of the detection main module is connected to the second input end of the current detection module. The first output end, the second output end, and the third output end of the current detection module are respectively connected to the first input end, the second input end, and the third input end of the control processing module;

[0009] The first control end of the control processing module is connected to the second input end of the detection main module. The third input end of the detection main module and the power supply end of the control processing module are respectively used to input voltage;

[0010] Wherein, the detection main module is used to respectively collect the currents at the first collection point and the second collection point, and output the currents at the first collection point and the second collection point to the first input end and the second input end of the current detection module respectively;

[0011] The current detection module is configured to output a first voltage or a second voltage to the control processing module through a first output end or a second output end of the current detection module according to the current output from the detection main module to a first input end of the current detection module, and output a third voltage to the control processing module through a third output end of the current detection module according to the current output from the detection main module to a second input end of the current detection module;

[0012] The control processing module is configured to output a conduction voltage to a second input end of the detection main module through a first output end of the control processing module, and the conduction voltage is used to trigger the detection main module to switch from collecting the current at the first collection point to collecting the current at the second collection point.

[0013] Optionally, a second control end of the control processing module is used to connect to the device to be detected;

[0014] The control processing module is configured to output a first electrical signal according to the first voltage, output a second electrical signal according to the second voltage, and output a third electrical signal according to the third voltage, wherein the first electrical signal is used to trigger the device to be detected to switch from a standby state to a no-load state when powered on, the second electrical signal is used to trigger the device to be detected to switch from a no-load state when powered on to a loaded state when powered on, and the third electrical signal is used to trigger the device to be detected to switch from a loaded state when powered on to a standby state.

[0015] Optionally, the detection main module includes a field effect transistor, a first resistor, a second resistor, and a conduction circuit;

[0016] A drain of the field effect transistor is respectively connected to a first end of the first resistor and a first input end of the current detection module, the drain of the field effect transistor is further used to connect to the device to be detected, a source of the field effect transistor is respectively connected to a second end of the first resistor, a first end of the second resistor, a first end of the conduction circuit, and a second input end of the current detection module, a gate of the field effect transistor is connected to a second end of the conduction circuit, and a second end of the second resistor is connected to a third end of the conduction circuit;

[0017] The third end of the conduction circuit is used to input a voltage, and a fourth end of the conduction circuit is connected to a first control end of the control processing module;

[0018] The second end of the second resistor is grounded;

[0019] When the conduction circuit is turned on, the field effect transistor is turned on to short-circuit the first resistor.

[0020] Optionally, the conduction circuit includes a third resistor, a fourth resistor, a fifth resistor, a sixth resistor, a first triode, a second triode, a third triode, and a fourth triode;

[0021] The first end of the third resistor is connected to the source electrode of the field effect transistor, the first end of the fourth resistor is connected to the gate electrode of the field effect transistor, the second end of the fourth resistor is respectively connected to the second end of the third resistor, the emitter of the first triode, and the emitter of the second triode, and the collector of the first triode is respectively connected to the second end of the second resistor, the emitter of the third triode, and the base of the first triode;

[0022] The base of the second triode is respectively connected to the base of the first triode and the collector of the fourth triode;

[0023] The base of the third triode is connected to the first control end of the control processing module, the collector of the third triode is respectively connected to the base of the fourth triode and the first end of the sixth resistor through the fifth resistor, the second end of the sixth resistor is respectively connected to the emitter of the fourth triode and the collector of the second triode, and the second end of the sixth resistor is used for inputting a voltage.

[0024] Optionally, the current detection module includes: a shutdown static current detection module, a startup no-load current detection module, and a load current detection module;

[0025] The input end of the shutdown static current detection module and the input end of the startup no-load current detection module are both connected to the first output end of the detection main module, the input end of the load current detection module is connected to the second output end of the detection main module, and the output end of the shutdown static current detection module, the output end of the startup no-load current detection module, and the output end of the load current detection module are respectively connected to the first input end, the second input end, and the third input end of the control processing module;

[0026] Wherein, the detection main module is configured to collect a first current at a first sampling point of the device to be detected and output the first current to the input end of the shutdown static current detection module, collect a second current at the first sampling point of the device to be detected and output the second current to the input end of the startup no-load current detection module, and collect a third current at a second sampling point of the device to be detected and output the third current to the input end of the load current detection module;

[0027] The shutdown static current detection module is configured to output the first voltage according to the first current; the startup no-load current detection module is configured to output the second voltage according to the second current; the load current detection module is configured to output the third voltage according to the third current.

[0028] Optionally, the shutdown static current detection module includes a first gain resistor, a seventh resistor, a first capacitor, and a first amplifying device;

[0029] The first end of the seventh resistor is connected to the first output end of the detection main module, the second end of the seventh resistor is respectively connected to the first end of the first amplifying device and the first electrode plate of the first capacitor, the second electrode plate of the first capacitor is connected to the second end of the first amplifying device, the third end of the first amplifying device is connected to the fourth end of the first amplifying device through the first gain resistor, and the fifth end of the first amplifying device is connected to the first input end of the control processing module;

[0030] The sixth end and the seventh end of the first amplifying device are respectively used for inputting the working voltage;

[0031] The shutdown static current detection module further includes a first follower;

[0032] The positive-phase input end of the first follower is connected to the fifth end of the first amplifying device, the negative-phase input end of the first follower is connected to the output end of the first follower, and the output end of the first follower is further connected to the first input end of the control processing module.

[0033] Optionally, the first end of the eighth resistor is connected to the first output end of the detection main module, the second end of the eighth resistor is respectively connected to the first end of the second amplifying device and the first electrode plate of the second capacitor, the second electrode plate of the second capacitor is connected to the second end of the second amplifying device, the third end of the second amplifying device is connected to the fourth end of the second amplifying device through the second gain resistor, and the fifth end of the second amplifying device is connected to the second input end of the control processing module;

[0034] The sixth end and the seventh end of the second amplifying device are respectively used for inputting the working voltage;

[0035] The startup no-load current detection module further includes a second follower;

[0036] The positive-phase input end of the second follower is connected to the fifth end of the second amplifying device, the negative-phase input end of the second follower is connected to the output end of the second follower, and the output end of the second follower is further connected to the second input end of the control processing module.

[0037] Optionally, the load current detection module includes a third gain resistor, a ninth resistor, a third capacitor, and a third amplifying device;

[0038] The first end of the ninth resistor is connected to the second output end of the detection main module. The second end of the ninth resistor is respectively connected to the first end of the third amplifying device and the first electrode plate of the third capacitor. The second electrode plate of the third capacitor is connected to the second end of the third amplifying device. The third end of the third amplifying device is connected to the fourth end of the third amplifying device through the third gain resistor. The fifth end of the third amplifying device is connected to the third input end of the control processing module;

[0039] The sixth and seventh ends of the third amplifying device are respectively used for inputting the working voltage;

[0040] The load current detection module further includes a third follower;

[0041] The non-inverting input end of the third follower is connected to the fifth end of the third amplifying device. The inverting input end of the third follower is connected to the output end of the third follower. The output end of the third follower is also connected to the third input end of the control processing module.

[0042] Optionally, the electric assist vehicle controller detection device further includes a power-on control module;

[0043] The second control end of the control processing module is connected to the first end of the power-on control module. The power-on control module is used to connect the device to be detected;

[0044] The control processing module is used to output a fourth electrical signal according to the first voltage. The fourth electrical signal is used to trigger the conduction of the power-on control module;

[0045] When the power-on control module is conducting, the power-on control module is used to output a fifth electrical signal according to the fourth electrical signal. The fifth electrical signal is used to trigger the device to be detected to switch from the standby state to the power-on no-load state.

[0046] Optionally, the power-on control module includes a tenth resistor, an eleventh resistor, and a fifth triode;

[0047] The base of the fifth triode is connected to the second control end of the control processing module through the tenth resistor. The collector of the fifth triode is connected to the second end of the device to be detected through the eleventh resistor. The emitter of the fifth triode is grounded.

[0048] Optionally, the electric assist vehicle controller detection device further includes a power supply module;

[0049] The first end of the power supply module is used to connect to the device to be detected to supply power to the device to be detected. The second end of the power supply module is connected to the third input end of the main detection module, and the third end of the power supply module is connected to the power supply end of the control processing module.

[0050] Optionally, the power supply module includes a power supply and a voltage conversion module;

[0051] The first output end of the power supply is connected to the power supply end of the device to be detected;

[0052] The second output end of the power supply is connected to the input end of the voltage conversion module. The first output end of the voltage conversion module is connected to the third input end of the main detection module, and the second output end of the voltage conversion module is connected to the power supply end of the control processing module.

[0053] The beneficial effects of the embodiments of the present application include:

[0054] An electric assist vehicle controller detection device provided by an embodiment of the present application. When the device to be detected is in the standby state, the device to be detected outputs current to the first acquisition point. The main detection module acquires the current at the first acquisition point and outputs the current at the first acquisition point collected through the first output end of the main detection module to the first input end of the current detection module. The current detection module converts the current at the first acquisition point into a first voltage and outputs the first voltage to the first input end of the control processing module through the first output end of the current detection module. After the control processing module receives the first voltage or after the control processing module completes corresponding detection or processing of the first voltage, relevant technicians can control corresponding switches or the control processing module outputs corresponding electrical signals to trigger the device to be detected to switch from the standby state to the power-on no-load state. In this way, the standby current of the device to be detected in the standby state can be detected, and the device to be detected is in the power-on no-load state.

[0055] When the device under test is in the power-on no-load state, the device under test outputs current to the first acquisition point. The detection main module collects the current at the first acquisition point and outputs the current at the first acquisition point collected through the first output end of the detection main module to the second input end of the current detection module. The current detection module converts the current at the first acquisition point into a second voltage and outputs the second voltage to the second input end of the control processing module through the second output end of the current detection module. After the control processing module receives the second voltage or after the control processing module completes corresponding detection or processing of the second voltage, relevant technicians can control corresponding switches or the control processing module can output corresponding electrical signals to trigger the device under test to switch from the power-on no-load state to the power-on loaded state. In this way, the detection of the no-load current of the device under test in the power-on no-load state can be completed, and the device under test is made to be in the power-on loaded state.

[0056] When the device under test is in the power-on loaded state, the device under test outputs current to the second acquisition point. The detection main module collects the current at the second acquisition point and outputs the current at the second acquisition point collected through the second output end of the detection main module to the third input end of the current detection module. The current detection module converts the current at the second acquisition point into a third voltage and outputs the third voltage to the third input end of the control processing module through the third output end of the current detection module. After the control processing module receives the third voltage or after the control processing module completes corresponding detection or processing of the third voltage, relevant technicians can control corresponding switches or the control processing module can output corresponding electrical signals to trigger the device under test to switch from the power-on loaded state to the standby state. In this way, the detection of the loaded current of the device under test in the power-on loaded state can be completed, and the device under test is made to be in the standby state.

[0057] During the detection of the device under test by the electric assist vehicle controller detection device, the currents output by the device under test in the standby state, power-on no-load state, and power-on loaded state can be automatically detected separately by switching the state of the detection device. In this way, the situation of misoperation or misdetection of the electric assist vehicle controller detection device during the detection process can be avoided, and the reliability of the detection can be improved.

[0058] In this way, the effects of improving the efficiency and reliability of the detection controller can be achieved. Description of the Drawings

[0059] To more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the accompanying drawings required in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and thus should not be regarded as a limitation on the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0060] Figure 1 Structural schematic diagram of the first electric assist vehicle controller detection device provided by the embodiment of the present application;

[0061] Figure 2 Structural schematic diagram of the second electric assist vehicle controller detection device provided by the embodiment of the present application;

[0062] Figure 3 Structural schematic diagram of a detection main module provided by the embodiment of the present application;

[0063] Figure 4 Structural schematic diagram of a conduction circuit provided by the embodiment of the present application;

[0064] Figure 5 Structural schematic diagram of the third electric assist vehicle controller detection device provided by the embodiment of the present application;

[0065] Figure 6 Structural schematic diagram of a shutdown static current detection module provided by the embodiment of the present application;

[0066] Figure 7 Structural schematic diagram of a startup no-load current detection module provided by the embodiment of the present application;

[0067] Figure 8 Structural schematic diagram of a load current detection module provided by the embodiment of the present application;

[0068] Figure 9 Structural schematic diagram of the fourth electric assist vehicle controller detection device provided by the embodiment of the present application;

[0069] Figure 10 Structural schematic diagram of a startup control module provided by the embodiment of the present application;

[0070] Figure 11 Structural schematic diagram of the fifth electric assist vehicle controller detection device provided by the embodiment of the present application;

[0071] Figure 12 Structural schematic diagram of a power supply module provided by the embodiment of the present application.

[0072] Reference numerals:

[0073] 101: Detection main module, 102: Current detection module, 1021: Shutdown static current detection module, 1022: Startup no-load current detection module, 1023: Load current detection module, 103: Control and processing module, 104: Conducting circuit, 105: Startup control module, 106: Power supply module, 1061: Power supply, 1062: Voltage transformation module;

[0074] R1: First resistor, R2: Second resistor, R3: Third resistor, R4: Fourth resistor, R5: Fifth resistor, R6: Sixth resistor, R7: Seventh resistor, R8: Eighth resistor, R9: Ninth resistor, R10: Tenth resistor, R11: Eleventh resistor, Q1: Field effect transistor, Q2: First triode, Q3: Second triode, Q4: Third triode, Q5: Fourth triode, Q6: Fifth triode, C1: First capacitor, C2: Second capacitor, C3: Third capacitor, U1: First amplifying device, U2: First follower, U3: Second amplifying device, U4: Second follower, U5: Third amplifying device, U6: Third follower. Detailed implementation manners

[0075] To make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Apparently, the described embodiments are some but not all of the embodiments of the present application. Usually, the components of the embodiments of the present application described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.

[0076] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the claimed present application, but merely represents the selected embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts fall within the scope of protection of the present application.

[0077] It should be noted that: Similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0078] In the description of the present application, it should be noted that the orientation or positional relationship indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the inventive product is customarily placed during use. It 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 thus should not be construed as a limitation to the present application. In addition, terms such as "first", "second", "third", etc. are only used for distinguishing descriptions and cannot be construed as indicating or implying relative importance.

[0079] In addition, terms such as "horizontal" and "vertical" do not mean that the components are required to be absolutely horizontal or hanging vertically, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0080] In the description of the present application, it should also be noted that unless otherwise clearly specified and limited, the terms "set", "installed", "connected", "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0081] In the related art, during the production and manufacturing stages of a controller, etc., it is necessary to detect the performance of the controller to ensure that it can work properly when installed in the drive system of an electric assist vehicle. Generally, relevant technicians usually conduct manual detection on the controller, such as detecting parameters such as the standby current and load current of the controller. However, the efficiency of manual detection is low, and it is inevitable that there will be omissions. Therefore, this solution has problems of low detection efficiency and poor detection reliability.

[0082] For this reason, the embodiment of the present application provides a detection device for an electric assist vehicle controller. The detection device for an electric assist vehicle controller includes a detection main module, a current detection module, and a control processing module. The first input end of the detection main module is used to connect the device to be detected. The first output end of the detection main module is connected to the first input end of the current detection module. The second output end of the detection main module is connected to the second input end of the current detection module. The first output end, the second output end, and the third output end of the current detection module are respectively connected to the first input end, the second input end, and the third input end of the control processing module. The first control end of the control processing module is connected to the second input end of the detection main module. It can achieve the effect of improving the efficiency and reliability of detecting the controller.

[0083] In the embodiments of the present application, an electric bicycle controller detection device applied to detect the controller of an electric assist bicycle is taken as an example for illustration. However, it does not mean that the embodiments of the present application can only be applied to detect the controller of an electric assist bicycle.

[0084] The electric bicycle controller detection device provided by the embodiments of the present application will be explained in detail below.

[0085] Figure 1 It is a schematic structural diagram of an electric bicycle controller detection device provided by the present application. Refer to Figure 1 The embodiments of the present application provide an electric bicycle controller detection device, which includes: a detection main module 101, a current detection module 102, and a control processing module 103.

[0086] The second input end of the detection main module 101 is used to connect the device to be detected. The first output end of the detection main module 101 is connected to the first input end of the current detection module 102, the second output end of the detection main module 101 is connected to the second input end of the current detection module 102, and the first output end, the second output end, and the third output end of the current detection module 102 are respectively connected to the first input end, the second input end, and the third input end of the control processing module 103.

[0087] The first control end of the control processing module 103 is connected to the third input end of the detection main module 101. The third input end of the detection main module 101 and the power supply end of the control processing module 103 are respectively used to input voltages.

[0088] Optionally, the detection main module 101 is used to respectively collect the currents at the first collection point and the second collection point of the device to be detected, and output the currents at the first collection point and the second collection point to the first input end and the second input end of the current detection module 102 respectively.

[0089] Optionally, the current detection module 102 is used to output a first voltage or a second voltage to the control processing module 103 through the first output end or the second output end of the current detection module 102 according to the current output from the detection main module 101 to the first input end of the current detection module 102, and output a third voltage to the control processing module 103 through the third output end of the current detection module 102 according to the current output from the detection main module 101 to the second input end of the current detection module 102.

[0090] Optionally, the control processing module 103 can also be used to output a conduction voltage to the third input end of the detection main module 101 through the first output end of the control processing module 103.

[0091] The control processing module 103 can specifically be configured to output a conduction voltage from the first output end of the control processing module 103 to the third input end of the detection main module 101 according to the second voltage.

[0092] This conduction voltage is used to trigger the detection main module 101 to switch from collecting the current at the first collection point to collecting the current at the second collection point.

[0093] Optionally, the device to be detected may be the above-mentioned electric bicycle controller or any other electronic device. The embodiments of the present application do not make any limitations in this regard.

[0094] In addition, during the process of detecting the device to be detected, a voltage may be applied to the device to be detected to supply power to ensure that the device to be detected can enter different working states or non-working states. In this way, the current of the device to be detected in different states can be detected by the electric bicycle controller detection device.

[0095] The device to be detected can also be switched to a standby state, a power-on no-load state, a power-on loaded state, or other possible states. Specifically, it can be changed by setting corresponding loads and switches or buttons for switching the state of the device to be detected in the electric bicycle controller detection device, so as to implement the function of switching the device to be detected to the standby state, the power-on no-load state, the power-on loaded state, or other possible states respectively.

[0096] Optionally, the first collection point may be a detection point set by a person skilled in the art for collecting the current output when the device to be detected is in the standby state or the power-on no-load state. The second collection point may be a detection point set by a person skilled in the art for collecting the current output when the device to be detected is in the power-on loaded state.

[0097] The first collection point and the second collection point may be respectively set at different detection resistors in the detection main module 101. The embodiments of the present application do not make any limitations in this regard.

[0098] Optionally, the control processing module 103 may be a microcontroller unit (MCU for short).

[0099] Optionally, the standby state may mean that the power supply outside the electric bicycle controller detection device or the power supply built in the electric bicycle controller detection device applies a voltage to the device to be detected, but the device to be detected has not been powered on.

[0100] The power-on no-load state means that the device to be detected is powered on, but the device to be detected is in a no-load state, that is, the motor connected to the device to be detected does not output torque.

[0101] The power-on with load state means that the device to be detected is powered on and is in a loaded state, that is, the motor connected to the device to be detected outputs torque.

[0102] Exemplarily, start switches can be arranged at both ends of the device to be detected, and by controlling the closing of the start switches, the device to be detected can be controlled to be in a standby state or a power-on no-load state. Additionally, changeover switches can be arranged at both ends of the device to be detected, and by controlling the changeover switches, it can be controlled whether a load is connected to both ends of the device to be detected, and the size of the connected load can be adjusted through the changeover switches or other switches to change the device to be detected to a power-on no-load state or a power-on with load state. The circuit for setting the start switches and the changeover switches can be any control circuit, and the embodiments of the present application do not limit this.

[0103] For example, the start switch can be arranged between the power supply outside the electric assist vehicle controller detection device or the built-in power supply of the electric assist vehicle controller detection device and the device to be detected. When the start switch is off, the device to be detected has not been powered on, and when the start switch is on, the device to be detected is powered on, that is, the motor connected to the device to be detected does not output torque. At this time, the device to be detected is in a power-on no-load state.

[0104] For another example, when the changeover switch is off, no load is connected to both ends of the device to be detected. At this time, the device to be detected is in a power-on no-load state. When the changeover switch is on, a load is connected to both ends of the device to be detected. At this time, the device to be detected is in a power-on with load state.

[0105] For another example, the control processing module 103 can output different electrical signals to the device to be detected according to the first voltage, the second voltage, or the third voltage, so that the device to be detected is switched to different states. The embodiments of the present application do not limit this.

[0106] It should be noted that the power supply outside the electric assist vehicle controller detection device can respectively input voltages to the detection main module 101, the current detection module 102, the control processing module 103, and the device to be detected to provide working voltages, or the built-in power supply in the electric assist vehicle controller detection device can respectively input voltages to the detection main module 101, the current detection module 102, the control processing module 103, and the device to be detected to provide working voltages. Moreover, the voltages input to the detection main module 101, the current detection module 102, the control processing module 103, and the device to be detected can be different. Specifically, the voltages can be respectively input to each module or the device to be detected according to the actual voltages required by each module or the device to be detected. The embodiments of the present application do not limit this.

[0107] The power supply external to the electric assist vehicle controller detection device can be a DC battery, mains power, or a generator. The built-in power supply in the electric assist vehicle controller detection device can be a DC battery or a power conversion device connected to the mains power. The embodiments of the present application do not limit this.

[0108] It should be noted that when the device to be detected is in the standby state, the device to be detected outputs current to the first acquisition point. The detection main module 101 collects the current at the first acquisition point and outputs the collected current at the first acquisition point to the first input end of the current detection module 102 through the first output end of the detection main module 101. The current detection module 102 converts the current at the first acquisition point into a first voltage and outputs the first voltage to the first input end of the control processing module 103 through the first output end of the current detection module 102. After the control processing module 103 receives the first voltage or the control processing module 103 completes corresponding detection or processing of the first voltage, relevant technicians can control the corresponding switch or the control processing module 103 outputs corresponding electrical signals to trigger the device to be detected to switch from the standby state to the power-on no-load state. In this way, the detection of the standby current of the device to be detected in the standby state can be completed, and the device to be detected is in the power-on no-load state.

[0109] When the device to be detected is in the power-on no-load state, the device to be detected outputs current to the first acquisition point. The detection main module 101 collects the current at the first acquisition point and outputs the collected current at the first acquisition point to the second input end of the current detection module 102 through the first output end of the detection main module 101. The current detection module 102 converts the current at the first acquisition point into a second voltage and outputs the second voltage to the second input end of the control processing module 103 through the second output end of the current detection module 102. After the control processing module 103 receives the second voltage or the control processing module 103 completes corresponding detection or processing of the second voltage, relevant technicians can control the corresponding switch or the control processing module 103 outputs corresponding electrical signals to trigger the device to be detected to switch from the power-on no-load state to the power-on loaded state. In this way, the detection of the no-load current of the device to be detected in the power-on no-load state can be completed, and the device to be detected is in the power-on loaded state.

[0110] When the device under test is in the powered-on and loaded state, the device under test outputs current to the second collection point. The detection main module 101 collects the current at the second collection point and outputs the current at the second collection point collected through the second output end of the detection main module 101 to the third input end of the current detection module 102. The current detection module 102 converts the current at the second collection point into a third voltage and outputs the third voltage to the third input end of the control processing module 103 through the third output end of the current detection module 102. After the control processing module 103 receives the third voltage or after the control processing module 103 completes corresponding detection or processing on the third voltage, relevant technicians can control the corresponding switch or the control processing module 103 can output corresponding electrical signals to trigger the device under test to switch from the powered-on and loaded state to the standby state. In this way, the detection of the load current of the device under test in the powered-on and loaded state can be completed, and the device under test is in the standby state.

[0111] During the detection of the device under test by the electric assist vehicle controller detection device, the current output by the device under test in the standby state, powered-on no-load state, and powered-on loaded state can be automatically detected separately by switching the state of the detection device. In this way, the situation of misoperation or misdetection of the electric assist vehicle controller detection device during the detection process can be avoided, and the reliability of the detection can be improved.

[0112] In this way, the effect of improving the efficiency and reliability of the detection controller can be achieved.

[0113] The electric assist vehicle controller detection device provided by the embodiment of the present application can change the state of the device under test in various ways. For example, relevant technicians can control the above-mentioned start switch or change-over switch to change the state of the device under test, or the control processing module 103 can output different electrical signals to the device under test to trigger the device under test to switch to different states. Next, the method of controlling the state of the device under test by the control processing module 103 will be described in detail.

[0114] In one possible way, referring to Figure 2 , the second control end of the control processing module 103 is used to connect to the device under test.

[0115] The control processing module 103 can also be used to output a first electrical signal according to the first voltage, output a second electrical signal according to the second voltage, and output a third electrical signal according to the third voltage.

[0116] Specifically, the first electrical signal, the second electrical signal, and / or the third electrical signal can be output to the device under test through the second control end of the control processing module 103.

[0117] In addition, the first electrical signal is used to trigger the device under test to switch from the standby state to the no-load startup state.

[0118] The second electrical signal is used to trigger the device under test to switch from the no-load startup state to the loaded startup state.

[0119] The third electrical signal is used to trigger the device under test to switch from the loaded startup state to the standby state.

[0120] It should be noted that when the detection main module 101 and the control processing module 103 change from the power-off state to the power-on state but the control processing module 103 does not output the first electrical signal, the device under test is in the standby state. When the control processing module 103 outputs the first electrical signal, the device under test is in the no-load startup state. When the control processing module 103 outputs the second electrical signal, the device under test is in the no-load startup state. When the control processing module 103 outputs the third electrical signal, the device under test is in the standby state.

[0121] When the device under test is in the standby state, the device under test outputs current to the first acquisition point. The detection main module 101 acquires the current at the first acquisition point and outputs the current at the first acquisition point acquired through the first output end of the detection main module 101 to the first input end of the current detection module 102. The current detection module 102 converts the current at the first acquisition point into a first voltage and outputs the first voltage to the first input end of the control processing module 103 through the first output end of the current detection module 102. After the control processing module 103 receives the first voltage, the control processing module 103 can output a first electrical signal to the device under test to trigger the device under test to switch from the standby state to the no-load startup state. In this way, the detection of the standby current of the device under test in the standby state can be completed, and the device under test is in the no-load startup state.

[0122] When the current detection module 102 does not output the first voltage to the control processing module 103, the control processing module 103 does not output a second electrical signal to the device under test according to the second voltage output by the current detection module 102. Moreover, after the control processing module 103 outputs the first electrical signal, the control processing module 103 will not output the first electrical signal to the device under test according to the first voltage output by the current detection module 102. In this way, the situation of misoperation or false detection during the detection of the electric bicycle controller detection device can be avoided, and the reliability of the detection can be improved.

[0123] When the device under test is in the power-on no-load state, the device under test outputs current to the first acquisition point. The detection main module 101 acquires the current at the first acquisition point and outputs the acquired current at the first acquisition point to the second input end of the current detection module 102 through the first output end of the detection main module 101. The current detection module 102 converts the current at the first acquisition point into a second voltage and outputs the second voltage to the second input end of the control processing module 103 through the second output end of the current detection module 102. After the control processing module 103 receives the second voltage, the control processing module 103 can output a second electrical signal to the device under test to trigger the device under test to switch from the power-on no-load state to the power-on loaded state. In this way, the detection of the no-load current of the device under test in the power-on no-load state can be completed, and the device under test is in the power-on loaded state.

[0124] After the control processing module 103 outputs the second electrical signal, the control processing module 103 will output a third electrical signal to the device under test according to the third voltage output by the current detection module 102. That is to say, when the control processing module 103 does not output the second electrical signal, the control processing module 103 will not output the third electrical signal. Moreover, after the control processing module 103 outputs the second electrical signal, the control processing module 103 can also output a conduction voltage to the detection main module 101 through the first output end to trigger the detection main module 101 to switch from acquiring the current at the first acquisition point to acquiring the current at the second acquisition point. In this way, the situation of misoperation or misdetection during the detection of the electric bicycle controller detection device can be avoided, and the reliability of the detection can be improved.

[0125] When the device under test is in the power-on loaded state, the device under test outputs current to the second acquisition point. The detection main module 101 acquires the current at the second acquisition point and outputs the acquired current at the second acquisition point to the third input end of the current detection module 102 through the second output end of the detection main module 101. The current detection module 102 converts the current at the second acquisition point into a third voltage and outputs the third voltage to the third input end of the control processing module 103 through the third output end of the current detection module 102. After the control processing module 103 receives the third voltage, the control processing module 103 can output a third electrical signal to the device under test to trigger the device under test to switch from the power-on loaded state to the standby state. In this way, the detection of the loaded current of the device under test in the power-on loaded state can be completed, and the device under test is in the standby state. In this way, the automatic detection of the device under test can be realized.

[0126] In this way, the effect of improving the efficiency and reliability of the detection controller can be achieved.

[0127] In a possible way, the control processing module 103 can determine whether the currents output by the device to be detected in the standby state, the no-load state when powered on, and the loaded state when powered on are normal by comparing the above-mentioned first voltage, second voltage, and third voltage with a preset voltage threshold, and output a detection result.

[0128] Exemplarily, when the device to be detected is in the standby state and the preset voltage threshold is 1V (volt), if the first voltage is less than or equal to 1V, it is determined that the current output by the device to be detected in the standby state is normal; otherwise, it is determined that the current output by the device to be detected in the standby state is abnormal.

[0129] When the device to be detected is in the no-load state when powered on and the preset voltage threshold is 10V, if the second voltage is less than or equal to 10V, it is determined that the current output by the device to be detected in the no-load state when powered on is normal; otherwise, it is determined that the current output by the device to be detected in the no-load state when powered on is abnormal.

[0130] When the device to be detected is in the loaded state when powered on and the preset voltage threshold is 20V, if the third voltage is less than or equal to 20V, it is determined that the current output by the device to be detected in the loaded state when powered on is normal; otherwise, it is determined that the current output by the device to be detected in the loaded state when powered on is abnormal.

[0131] In a possible implementation, on the basis of Figure 2 refer to Figure 3 , the detection main module 101 includes a field effect transistor Q1, a first resistor R1, a second resistor R2, and a conduction circuit 104.

[0132] The drain of the field effect transistor Q1 is respectively connected to the first end of the first resistor R1 and the first input end of the current detection module 102. The drain of the field effect transistor Q1 is also used to connect to the device to be detected. The source of the field effect transistor Q1 is respectively connected to the second end of the first resistor R1, the first end of the second resistor R2, the first end of the conduction circuit 104, and the second input end of the current detection module 102. The gate of the field effect transistor Q1 is connected to the second end of the conduction circuit 104. The second end of the second resistor R2 is connected to the third end of the conduction circuit 104.

[0133] The third end of the conduction circuit 104 is used to input a voltage, and the fourth end of the conduction circuit 104 is connected to the first control end of the control processing module 103.

[0134] The second end of the second resistor R2 is grounded.

[0135] Optionally, when the conduction circuit 104 is conducting, the field effect transistor Q1 conducts to short-circuit the first resistor R1.

[0136] Optionally, the field effect transistor Q1 can be an NMOS transistor.

[0137] Exemplarily, the first resistor R1 can be a resistor with a resistance value of 2 Ω, and the second resistor R2 can be a resistor with a resistance value of 0.004 Ω. Naturally, the resistance values of the first resistor R1 and the second resistor R2 can be adjusted according to the parameters of the device to be detected. The embodiments of the present application do not limit this.

[0138] The first resistor R1 can be used to sample the current output by the device to be detected when it is in the standby state or the no-load state after startup.

[0139] The second resistor R2 can be used to sample the current output by the device to be detected when it is in the loaded state after startup.

[0140] In addition, the drain of the field effect transistor Q1 can be used to connect to the ground wire of the device to be detected, so as to realize the common ground of the drain of the field effect transistor Q1 and the device to be detected.

[0141] It should be noted that the power supply outside the electric assist vehicle controller detection device or the built-in power supply of the electric assist vehicle controller detection device can be used to output the voltage required by the conduction circuit 104 to the third end of the conduction circuit 104, so as to ensure that the conduction circuit 104 can work normally. In addition, the voltage input to the third end of the conduction circuit 104 can be adjusted according to the actual required voltage value of the conduction circuit 104. The embodiments of the present application do not limit this.

[0142] When the device to be detected is in the standby state, the control processing module 103 does not output the above-mentioned conduction voltage. At this time, the conduction circuit 104 is not conducted, the field effect transistor Q1 is not conducted, and the first resistor R1 is not short-circuited. The current output by the device to be detected can flow through the first resistor R1 through the first acquisition point. That is to say, the first resistor R1 can collect the current output by the device to be detected in the standby state. Then, the detection main module 101 can output the current flowing through the first resistor R1 to the first input end of the current detection module 102, and the current detection module 102 outputs the first voltage to the first input end of the control processing module 103, so as to realize the detection of the standby current of the device to be detected in the standby state.

[0143] When the device to be detected is in the no-load state during startup, the control processing module 103 will not output the conduction voltage. At this time, the conduction circuit 104 is not conducting, the field-effect transistor Q1 is not conducting, and the first resistor R1 is not short-circuited. The first resistor R1 can collect the current output by the device to be detected in the no-load state during startup. Then, the detection main module 101 can output the current flowing through the first resistor R1 to the first input terminal of the current detection module 102, and the current detection module 102 outputs the second voltage to the second input terminal of the control processing module 103 to detect the standby current of the device to be detected in the no-load state during startup.

[0144] When the device to be detected is in the loaded state during startup, the control processing module 103 outputs the conduction voltage. At this time, the conduction circuit 104 conducts, the field-effect transistor Q1 conducts, and the first resistor R1 is short-circuited by the field-effect transistor Q1. At this time, the current output by the device to be detected will not flow through the first resistor R1 but only through the second resistor R2. Then, the detection main module 101 can output the current flowing through the second resistor R2 to the second input terminal of the current detection module 102, and the current detection module 102 outputs the third voltage to the third input terminal of the control processing module 103 to detect the standby current of the device to be detected in the loaded state during startup.

[0145] The control processing module 103 outputs the conduction voltage to trigger the conduction of the conduction circuit 104, and then triggers the conduction of the field-effect transistor Q1 to short-circuit the first resistor R1. When the first resistor R1 is not short-circuited, the current output by the device to be detected can flow through the first resistor R1. When the first resistor R1 is short-circuited, the current output by the device to be detected can only flow through the second resistor R2. That is to say, only the second resistor R2 can collect the current output by the device to be detected in the loaded state during startup. In this way, it is possible to avoid misoperation or misdetection during the detection of the electric bicycle controller detection device and improve the reliability of detection.

[0146] In a possible implementation, on the basis of Figure 3 , referring to Figure 4 , the conduction circuit 104 includes a third resistor R3, a fourth resistor R4, a fifth resistor R5, a sixth resistor R6, a first triode Q2, a second triode Q3, a third triode Q4, and a fourth triode Q5.

[0147] The first end of the third resistor R3 is connected to the source of the field effect transistor Q1, the first end of the fourth resistor R4 is connected to the gate of the field effect transistor Q1, and the second end of the fourth resistor R4 is respectively connected to the second end of the third resistor R3, the emitter of the first triode Q2, and the emitter of the second triode Q3. The collector of the first triode Q2 is respectively connected to the second end of the second resistor R2, the emitter of the third triode Q4, and the base of the first triode Q2.

[0148] The base of the second triode Q3 is respectively connected to the base of the first triode Q2 and the collector of the fourth triode Q5.

[0149] The base of the third triode Q4 is connected to the first control end of the control processing module 103. The collector of the third triode Q4 is respectively connected to the base of the fourth triode Q5 and the first end of the sixth resistor R6 through the fifth resistor R5. The second end of the sixth resistor R6 is respectively connected to the emitter of the fourth triode Q5 and the collector of the second triode Q3, and the second end of the sixth resistor R6 is used for inputting a voltage.

[0150] Optionally, the first triode Q2 and the fourth triode Q5 can be PNP type triodes.

[0151] Optionally, the second triode Q3 and the third triode Q4 can be NPN type triodes.

[0152] It should be noted that a required voltage can be output to the second end of the sixth resistor R6, the emitter of the fourth triode Q5, and the collector of the second triode Q3 through a power supply external to the electric assist vehicle controller detection device or a power supply built in the electric assist vehicle controller detection device, so as to ensure that the conduction circuit 104 can work normally.

[0153] Exemplarily, the first control end of the control processing module 103 can output a conduction voltage with a voltage value of 3.3V to the base of the third triode Q4. A working voltage with a voltage value of 15V can be output to the collector of the second triode Q3, the emitter of the fourth triode Q5, and the second end of the sixth resistor R6 through a power supply external to the electric assist vehicle controller detection device or a power supply built in the electric assist vehicle controller detection device.

[0154] It should be noted that since the base of the third triode Q4 is connected to the first control end of the control processing module 103, and the collector of the second triode Q3 is used for input voltage. When the first control end of the control processing module 103 does not output the conduction voltage to the base of the third triode Q4, although the power supply continuously outputs voltage to the collector of the third triode Q4, the conduction voltage is not applied to the base of the third triode Q4. And the emitter of the third triode Q4 is connected to the second end of the second resistor R2 and grounded. At this time, the third triode Q4 is not conducting. Then, the voltage of the base of the fourth triode Q5 is equal to the voltage of the emitter of the fourth triode Q5, the fourth triode Q5 is also not conducting, the base voltage of the second triode Q3 is less than the emitter voltage of the second triode Q3, the second triode Q3 is also not conducting, the base voltage of the first triode Q2 is equal to the collector voltage of the first triode Q2, and the first triode Q2 is also not conducting. Therefore, when the first control end of the control processing module 103 does not output the conduction voltage to the base of the third triode Q4, the conduction circuit 104 is not conducting. Thus, the field effect transistor Q1 is also not conducting. At this time, the first resistor R1 is not short-circuited.

[0155] When the first control end of the control processing module 103 outputs the conduction voltage to the base of the third triode Q4, the conduction voltage is applied to the base of the third triode Q4. At this time, the third triode Q4 is conducting. Then, the voltage of the base of the fourth triode Q5 is less than the emitter voltage of the fourth triode Q5, the fourth triode Q5 is conducting, the base voltage of the second triode Q3 is greater than the emitter voltage of the second triode Q3, the second triode Q3 is also not conducting, the base voltage of the first triode Q2 is greater than the collector voltage of the first triode Q2, and the first triode Q2 is also conducting. Therefore, when the first control end of the control processing module 103 outputs the conduction voltage to the base of the third triode Q4, the conduction circuit 104 is conducting. Thus, the field effect transistor Q1 is also conducting. At this time, the first resistor R1 is short-circuited.

[0156] In this way, it is possible to trigger the conduction of the conduction circuit 104 by outputting the conduction voltage from the first control end of the control processing module 103 to the base of the third triode Q4, and then trigger the conduction of the field effect transistor Q1 to short-circuit the first resistor R1.

[0157] In a possible implementation, on the basis of Figure 2 , referring to Figure 5 , the current detection module 102 includes: a shutdown static current detection module 1021, a startup no-load current detection module 1022, and a load current detection module 1023.

[0158] The input terminals of the shutdown static current detection module 1021 and the input terminals of the startup no-load current detection module 1022 are both connected to the first output terminal of the detection main module 101. The input terminal of the load current detection module 1023 is connected to the second output terminal of the detection main module 101. The output terminals of the shutdown static current detection module 1021, the startup no-load current detection module 1022, and the load current detection module 1023 are respectively connected to the first input terminal, the second input terminal, and the third input terminal of the control processing module 103.

[0159] Among them, the detection main module 101 is used to collect the first current at the first sampling point of the device to be detected and output the first current to the input terminal of the shutdown static current detection module 1021, collect the second current at the first sampling point of the device to be detected and output the second current to the input terminal of the startup no-load current detection module 1022, and collect the third current at the second sampling point of the device to be detected and output the third current to the input terminal of the load current detection module 1023.

[0160] The shutdown static current detection module 1021 is used to output the first voltage according to the first current.

[0161] The startup no-load current detection module 1022 is used to output the second voltage according to the second current.

[0162] The load current detection module 1023 is used to output the third voltage according to the third current.

[0163] Optionally, the first current may be the current output when the device to be detected is in the standby state. The first current may also be the current of the first resistor R1 when the device to be detected is in the standby state. The embodiments of the present application do not limit this.

[0164] Optionally, the second current may be the current output when the device to be detected is in the startup no-load state. The second current may also be the current of the first resistor R1 when the device to be detected is in the startup no-load state. The embodiments of the present application do not limit this.

[0165] Optionally, the third current may be the current output when the device to be detected is in the startup loaded state. The third current may also be the current of the second resistor R2 when the device to be detected is in the startup loaded state. The embodiments of the present application do not limit this.

[0166] In this way, it is possible to detect the currents output when the device to be detected is in the standby state, the startup no-load state, and the startup loaded state respectively, and further ensure the practicability of the electric bicycle controller detection device.

[0167] In a possible implementation, on the basis of Figure 5 refer toFigure 6 The shutdown static current detection module 1021 includes a first gain resistor Ra, a seventh resistor R7, a first capacitor C1, and a first amplifying device U1.

[0168] The first end of the seventh resistor R7 is connected to the first output end of the detection main module 101. The second end of the seventh resistor R7 is respectively connected to the first end of the first amplifying device U1 and the first electrode plate of the first capacitor C1. The second electrode plate of the first capacitor C1 is connected to the second end of the first amplifying device U1. The third end of the first amplifying device U1 is connected to the fourth end of the first amplifying device U1 through the first gain resistor Ra. The fifth end of the first amplifying device U1 is connected to the first input end of the control processing module 103.

[0169] The sixth end and the seventh end of the first amplifying device U1 are respectively used for inputting the working voltage.

[0170] Optionally, the resistance value of the first gain resistor Ra may be 245 Ω. The resistance value of the seventh resistor R7 may be 10 kΩ.

[0171] Optionally, the first amplifying device U1 may be an instrumentation amplifier, and the specific model of this instrumentation amplifier may be AD620B. The gain multiple of the first amplifying device U1 may be 1 - 100 times. The embodiments of the present application do not limit this.

[0172] Optionally, the working voltage input to the sixth end of the first amplifying device U1 may be +5V, and the working voltage input to the seventh end of the first amplifying device U1 may be -5V. Of course, the working voltages input to the sixth end and the seventh end of the first amplifying device U1 may also be other arbitrary possible voltage values. The embodiments of the present application do not limit this.

[0173] It should be noted that since the current output by the device to be detected in the standby state is very small, usually not exceeding 50 μA (microampere), therefore, the current at the first acquisition point collected by the detection main module 101 when the device to be detected is in the standby state needs to be input to the first amplifying device U1 for amplification and converted into the above-mentioned first voltage, so as to ensure that the first voltage output by the shutdown static current detection module 1021 to the first input end of the control processing module 103 can be accurately recognized by the control processing module 103, and the shutdown static current detection result is determined according to this first voltage.

[0174] A possible way, continue to refer to Figure 6 The shutdown static current detection module 1021 further includes a first follower U2.

[0175] The positive input terminal of the first follower U2 is connected to the fifth terminal of the first amplifying device U1. The negative input terminal of the first follower U2 is connected to the output terminal of the first follower U2. The output terminal of the first follower U2 is also connected to the first input terminal of the control processing module 103.

[0176] Optionally, the amplification factor of the first follower U2 is 1 times. The model of the first follower U2 can be an operational amplifier of model GS8552. The embodiments of the present application do not limit this.

[0177] It should be noted that the function of the first follower U2 is to reduce the influence of the impedance of the first amplifying device U1 on the first voltage output by the first amplifying device U1. By setting the first follower U2, the accuracy and reliability of the detection of the electric assist vehicle controller detection device can be improved.

[0178] In a possible implementation manner, on the basis of Figure 5 , referring to Figure 7 , the no-load current detection module 1022 during startup includes a second gain resistor Rb, an eighth resistor R8, a second capacitor C2, and a second amplifying device U3.

[0179] The first end of the eighth resistor R8 is connected to the first output terminal of the detection main module 101. The second end of the eighth resistor R8 is respectively connected to the first end of the second amplifying device U3 and the first electrode plate of the second capacitor C2. The second electrode plate of the second capacitor C2 is connected to the second end of the second amplifying device U3. The third end of the second amplifying device U3 is connected to the fourth end of the second amplifying device U3 through the second gain resistor Rb. The fifth end of the second amplifying device U3 is connected to the second input terminal of the control processing module 103.

[0180] The sixth end and the seventh end of the second amplifying device U3 are respectively used for inputting the working voltage.

[0181] Optionally, the resistance value of the second gain resistor Rb can be 5.43 kΩ. The resistance value of the eighth resistor R8 can be 10 kΩ.

[0182] Optionally, the second amplifying device U3 can be an instrumentation amplifier, and the specific model of this instrumentation amplifier can be AD620B. The gain multiple of the second amplifying device U3 can be 50 times. The embodiments of the present application do not limit this.

[0183] Optionally, the working voltage input to the sixth end of the second amplifying device U3 can be +5V, and the working voltage input to the seventh end of the second amplifying device U3 can be -5V. Naturally, the working voltages input to the sixth end and the seventh end of the second amplifying device U3 can also be voltages of other arbitrary possible voltage values. The embodiments of the present application do not limit this.

[0184] It should be noted that since the current output by the device to be detected is relatively small when it is in the boot - no - load state, usually not exceeding 50 mA (milliamperes), therefore, the current at the first acquisition point collected by the detection main module 101 when the device to be detected is in the boot - no - load state needs to be input into the second amplification device U3 for amplification and converted into the above - mentioned second voltage, so as to ensure that the second voltage output by the boot - no - load current detection module 1022 to the second input end of the control processing module 103 can be accurately recognized by the control processing module 103, and the boot - no - load current detection result can be determined according to this second voltage.

[0185] A possible way is to continue referring to Figure 7 , and the boot - no - load current detection module 1022 further includes a second follower U4.

[0186] The non - inverting input terminal of the second follower U4 is connected to the fifth terminal of the second amplification device U3, the inverting input terminal of the second follower U4 is connected to the output terminal of the second follower U4, and the output terminal of the second follower U4 is also connected to the second input end of the control processing module 103.

[0187] Optionally, the amplification factor of the second follower U4 is 1 times. The model of the second follower U4 can be an operational amplifier with the model GS8552. The embodiments of the present application do not limit this.

[0188] It should be noted that the function of the second follower U4 is to reduce the influence of the impedance of the second amplification device U3 on the second voltage output by the second amplification device U3. By setting the second follower U4, the accuracy and reliability of the detection of the electric - assist vehicle controller detection device can be improved.

[0189] In a possible implementation manner, on the basis of Figure 5 , referring to Figure 8 , the load current detection module 1023 includes a third gain resistor Rc, a ninth resistor R9, a third capacitor C3, and a third amplification device U5.

[0190] The first end of the ninth resistor R9 is connected to the second output end of the detection main module 101, the second end of the ninth resistor R9 is respectively connected to the first end of the third amplification device U5 and the first electrode plate of the third capacitor C3, the second electrode plate of the third capacitor C3 is connected to the second end of the third amplification device U5, the third end of the third amplification device U5 is connected to the fourth end of the third amplification device U5 through the third gain resistor Rc, and the fifth end of the third amplification device U5 is connected to the third input end of the control processing module 103.

[0191] The sixth end and the seventh end of the third amplification device U5 are respectively used for inputting the working voltage.

[0192] Optionally, the resistance value of the third gain resistor Rc may be 0.98 kΩ. The resistance value of the ninth resistor R9 may be 10 kΩ.

[0193] Optionally, the third amplifying device U5 may be an instrumentation amplifier, and the specific model of the instrumentation amplifier may be AD620B. The gain multiple of the third amplifying device U5 may be 10 times. The embodiments of the present application do not limit this.

[0194] Optionally, the operating voltage input to the sixth terminal of the third amplifying device U5 may be +5V, and the operating voltage input to the seventh terminal of the third amplifying device U5 may be -5V. Naturally, the operating voltages input to the sixth terminal and the seventh terminal of the third amplifying device U5 may also be voltages of any other possible voltage values. The embodiments of the present application do not limit this.

[0195] It should be noted that since the current output by the device to be detected is relatively large when it is in the power-on and loaded state, generally 1 - 20 A (amperes), therefore, the current at the second acquisition point collected by the detection main module 101 when the device to be detected is in the power-on and loaded state needs to be input to the third amplifying device U5 for amplification and converted into the above-mentioned third voltage, so as to ensure that the third voltage output by the power-on and loaded current detection module 102 to the third input terminal of the control processing module 103 will not be too large to damage the control processing module 103 or other components in the electric bicycle controller detection device, and can also ensure that the control processing module 103 accurately identifies the third voltage and determines the power-on no-load current detection result according to the third voltage.

[0196] A possible way, continue to refer to Figure 8 , the load current detection module 1023 further includes a third follower U6.

[0197] The non-inverting input terminal of the third follower U6 is connected to the fifth terminal of the third amplifying device U5, the inverting input terminal of the third follower U6 is connected to the output terminal of the third follower U6, and the output terminal of the third follower U6 is also connected to the third input terminal of the control processing module 103.

[0198] Optionally, the amplification multiple of the third follower U6 is 1 time. The model of the third follower U6 may be an operational amplifier with the model GS8552. The embodiments of the present application do not limit this.

[0199] It should be noted that the function of the third follower U6 is to reduce the influence of the impedance of the third amplifying device U5 on the second voltage output by the third amplifying device U5. By setting the third follower U6, the accuracy and reliability of the detection of the electric bicycle controller detection device can be improved.

[0200] In a possible way, the operating voltages input to the sixth and seventh terminals of the first amplifying device U1, the sixth and seventh terminals of the second amplifying device U3, and the sixth and seventh terminals of the third amplifying device U5 can be output by a power supply chip.

[0201] Optionally, the power supply chip can be powered by a power supply external to the electric bicycle controller detection device or a power supply built into the electric bicycle controller detection device. The embodiments of the present application do not limit this.

[0202] Exemplarily, the power supply chip can be a power supply chip with the model LM27762.

[0203] In a possible implementation manner, referring to Figure 9 , the electric bicycle controller detection device further includes: a power-on control module 105.

[0204] The second control terminal of the control processing module 103 is connected to the first terminal of the power-on control module 105, and the power-on control module 105 is used to connect the device to be detected.

[0205] The control processing module 103 is used to output a fourth electrical signal according to the first voltage.

[0206] When the power-on control module 105 is turned on, the power-on control module 105 is used to output a fifth electrical signal according to the fourth electrical signal.

[0207] Optionally, the fourth electrical signal is used to trigger the power-on control module 105 to turn on.

[0208] Optionally, the fifth electrical signal is used to trigger the device to be detected to switch from the standby state to the power-on no-load state.

[0209] It should be noted that the control processing module 103 can trigger the power-on control module 105 to turn on and output the fifth electrical signal by outputting the fourth electrical signal to the power-on control module 105, thereby triggering the device to be detected to switch from the standby state to the power-on no-load state. In this way, it is possible to avoid directly connecting the control processing module 103 to the device to be detected, so as to ensure that the device to be detected does not directly output a large current or a large voltage to the control processing module 103 and damage the control processing module 103. In this way, the safety and reliability of the electric bicycle controller detection device can be improved.

[0210] In a possible implementation manner, referring to Figure 10 , the power-on control module 105 includes a tenth resistor R10, an eleventh resistor R11, and a fifth triode Q6.

[0211] The base of the fifth triode Q6 is connected to the second control terminal of the control processing module 103 through the tenth resistor R10. The collector of the fifth triode Q6 is connected to the second terminal of the device to be detected through the eleventh resistor R11, and the emitter of the fifth triode Q6 is grounded.

[0212] It should be noted that when the control processing module 103 outputs the fourth electrical signal to the base of the fifth triode Q6 through the tenth resistor R10, since the emitter of the fifth triode Q6 is grounded, and the collector of the fifth triode Q6 is connected to the second terminal of the device to be detected through the eleventh resistor R11, the voltage at the collector of the fifth triode Q6 is greater than that at the base of the fifth triode Q6, and the base of the fifth triode Q6 is greater than the voltage at the emitter of the fifth triode Q6. At this time, the fifth triode Q6 conducts. In this case, the device to be detected can be triggered to switch from the standby state to the no-load state when powered on.

[0213] In a possible implementation, refer to Figure 11 , the electric bicycle controller detection device further includes: a power supply module 106.

[0214] The first terminal of the power supply module 106 is used to connect to the device to be detected to supply power to the device to be detected. The second terminal of the power supply module 106 is connected to the third input terminal of the detection main module 101, and the third terminal of the power supply module 106 is connected to the power supply terminal of the control processing module 103.

[0215] The power supply module 106 can be the power supply built in the above-mentioned electric bicycle controller detection device.

[0216] In a possible implementation, refer to Figure 12 , the power supply module 106 includes a power supply 1061 and a voltage transformation module 1062.

[0217] The first output terminal of the power supply 1061 is connected to the power supply terminal of the device to be detected.

[0218] The second output terminal of the power supply 1061 is connected to the input terminal of the voltage transformation module 1062. The first output terminal of the voltage transformation module 1062 is connected to the third input terminal of the detection main module 101. The second output terminal of the voltage transformation module 1062 is connected to the power supply terminal of the control processing module 103. The third output terminal of the voltage transformation module 1062 is connected to the third terminal of the conduction circuit 104.

[0219] Optionally, the power supply 1061 can output voltages with voltage levels of 24V, 36V, 48V, 72V or any other possible voltage levels. The embodiments of the present application do not limit this.

[0220] Exemplarily, the first output terminal of the power supply 1061 can output 36V to the power supply terminal of the device to be detected or any other voltage that can enable the device to be detected to be powered on and work properly. The embodiments of the present application do not limit this.

[0221] The second output terminal of the power supply 1061 can output 20V or a voltage of any other level to the input terminal of the voltage conversion module 1062. The embodiments of the present application do not limit this.

[0222] Optionally, the voltage conversion module 1062 can be a step-down transformer. And the voltage conversion module 1062 can simultaneously convert the voltage output from the second output terminal of the power supply 1061 into voltages of multiple different levels.

[0223] Exemplarily, if the voltage output from the second output terminal of the power supply 1061 is 20V, the voltage conversion module 1062 can convert the voltage output from the second output terminal of the power supply 1061 to the voltage conversion module 1062 into a 15V voltage and output it to the first input terminal of the detection main module 101 through the first output terminal. The voltage conversion module 1062 can also convert the voltage output from the second output terminal of the power supply 1061 to the voltage conversion module 1062 into a 3.6V voltage and output it to the power supply terminal of the control processing module 103 through the second output terminal.

[0224] In a possible implementation, the electric assist vehicle controller detection device further includes a voltage detection module.

[0225] The voltage detection module can be connected between the power supply module 106 and the control processing module 103.

[0226] The voltage detection module can be used to detect whether the voltage output by the power supply module 106 is normal.

[0227] Exemplarily, the voltage detection module can include at least one voltage dividing resistor, and output the voltages at both ends of each voltage dividing resistor to a pin of the control processing module 103. The control processing module 103 can obtain the voltage output by the power supply module 106 based on the voltage output by the voltage detection module to determine whether the battery voltage for the power supply module 106 is normal.

[0228] In a possible implementation, the electric assist vehicle controller detection device further includes a plurality of filter capacitors.

[0229] Each filter capacitor can be respectively installed at both ends of the third resistor R3 and between the base of the third triode Q4 and the second end of the second resistor R2.

[0230] Of course, the first electrode plate of each filtering capacitor can also be connected to any one component in the shutdown static current detection module 1021, the startup no-load current detection module 1022, and the load current detection module 1023, and the second electrode plate of each filtering capacitor is grounded. The embodiments of the present application do not make any limitations in this regard.

[0231] In a possible implementation manner, the electric assist vehicle controller detection device further includes a plurality of current limiting resistors.

[0232] Each current limiting resistor can be connected in parallel with each filtering capacitor. The embodiments of the present application do not make any limitations in this regard.

[0233] In a possible implementation manner, the electric assist vehicle controller detection device may further include a display module, and the display module can be connected to the control processing module 103.

[0234] After the electric assist vehicle controller detection device completes the detection of the above-mentioned device to be detected, the display module can display the current output by the device to be detected in each state, and display the corresponding detection result, and the detection result is used to indicate whether the device to be detected is normal in different states.

[0235] The above is only the specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present application, and all should be covered by the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

[0236] The above is only the preferred embodiment of the present application and is not used to limit the present application. For those skilled in the art, the present application can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An electric assist vehicle controller detection device, characterized in that, The electric assist vehicle controller detection device includes: a detection main module, a current detection module, and a control processing module; The first input end of the detection main module is used to connect the device to be detected. The first output end of the detection main module is connected to the first input end of the current detection module, the second output end of the detection main module is connected to the second input end of the current detection module, and the first output end, the second output end, and the third output end of the current detection module are respectively connected to the first input end, the second input end, and the third input end of the control processing module; The first control end of the control processing module is connected to the second input end of the detection main module. The third input end of the detection main module and the power supply end of the control processing module are respectively used to input voltage; Among them, the detection main module is used to respectively collect the currents at the first collection point and the second collection point, and output the currents at the first collection point and the second collection point to the first input end and the second input end of the current detection module respectively; The current detection module is used to output a first voltage or a second voltage to the control processing module through the first output end or the second output end of the current detection module according to the current output by the detection main module to the first input end of the current detection module, and output a third voltage to the control processing module through the third output end of the current detection module according to the current output by the detection main module to the second input end of the current detection module; The control processing module is used to output a conduction voltage to the second input end of the detection main module through the first output end of the control processing module, and the conduction voltage is used to trigger the detection main module to switch from collecting the current at the first collection point to collecting the current at the second collection point; The second control end of the control processing module is used to connect the device to be detected; The control processing module is also used to output a first electrical signal according to the first voltage, output a second electrical signal according to the second voltage, and output a third electrical signal according to the third voltage. Among them, the first electrical signal is used to trigger the device to be detected to switch from the standby state to the power-on no-load state, the second electrical signal is used to trigger the device to be detected to switch from the power-on no-load state to the power-on loaded state, and the third electrical signal is used to trigger the device to be detected to switch from the power-on loaded state to the standby state; The detection main module includes a field effect transistor, a first resistor, a second resistor, and a conduction circuit.

2. The electric assist vehicle controller detection device according to claim 1, characterized in that, The drain of the field effect transistor is respectively connected to the first end of the first resistor and the first input end of the current detection module. The drain of the field effect transistor is also used to connect the device to be detected. The source of the field effect transistor is respectively connected to the second end of the first resistor, the first end of the second resistor, the first end of the conduction circuit, and the second input end of the current detection module. The gate of the field effect transistor is connected to the second end of the conduction circuit, and the second end of the second resistor is connected to the third end of the conduction circuit; The third end of the conduction circuit is used to input voltage, and the fourth end of the conduction circuit is connected to the first control end of the control processing module; The second terminal of the second resistor is grounded; When the conduction circuit is conducting, the field effect transistor conducts to short-circuit the first resistor.

3. The electric assist vehicle controller detection device according to claim 2, characterized in that, The conduction circuit includes a third resistor, a fourth resistor, a fifth resistor, a sixth resistor, a first triode, a second triode, a third triode, and a fourth triode; The first terminal of the third resistor is connected to the source electrode of the field effect transistor, the first terminal of the fourth resistor is connected to the gate electrode of the field effect transistor, the second terminal of the fourth resistor is respectively connected to the second terminal of the third resistor, the emitter electrode of the first triode, and the emitter electrode of the second triode, and the collector electrode of the first triode is respectively connected to the second terminal of the second resistor, the emitter electrode of the third triode, and the base electrode of the first triode; The base electrode of the second triode is respectively connected to the base electrode of the first triode and the collector electrode of the fourth triode; The base electrode of the third triode is connected to the first control terminal of the control processing module, the collector electrode of the third triode is respectively connected to the base electrode of the fourth triode and the first terminal of the sixth resistor through the fifth resistor, the second terminal of the sixth resistor is respectively connected to the emitter electrode of the fourth triode and the collector electrode of the second triode, and the second terminal of the sixth resistor is used for inputting a voltage.

4. The electric assist vehicle controller detection device according to claim 1, characterized in that, The current detection module includes: a shutdown static current detection module, a startup no-load current detection module, and a load current detection module; The input terminal of the shutdown static current detection module and the input terminal of the startup no-load current detection module are both connected to the first output terminal of the detection main module, the input terminal of the load current detection module is connected to the second output terminal of the detection main module, and the output terminal of the shutdown static current detection module, the output terminal of the startup no-load current detection module, and the output terminal of the load current detection module are respectively connected to the first input terminal, the second input terminal, and the third input terminal of the control processing module; Wherein, the detection main module is used for collecting the first current at the first sampling point of the device to be detected and outputting the first current to the input terminal of the shutdown static current detection module, collecting the second current at the first sampling point of the device to be detected and outputting the second current to the input terminal of the startup no-load current detection module, and collecting the third current at the second sampling point of the device to be detected and outputting the third current to the input terminal of the load current detection module; The shutdown static current detection module is used for outputting the first voltage according to the first current; the startup no-load current detection module is used for outputting the second voltage according to the second current; the load current detection module is used for outputting the third voltage according to the third current.

5. The electric assist vehicle controller detection device according to claim 4, characterized in that, The shutdown static current detection module includes a first gain resistor, a seventh resistor, a first capacitor, and a first amplifying device; The first end of the seventh resistor is connected to the first output end of the detection main module. The second end of the seventh resistor is respectively connected to the first end of the first amplifying device and the first plate of the first capacitor. The second plate of the first capacitor is connected to the second end of the first amplifying device. The third end of the first amplifying device is connected to the fourth end of the first amplifying device through the first gain resistor. The fifth end of the first amplifying device is connected to the first input end of the control processing module; The sixth end and the seventh end of the first amplifying device are respectively used for inputting the working voltage; The shutdown static current detection module further includes a first follower; The positive-phase input end of the first follower is connected to the fifth end of the first amplifying device. The negative-phase input end of the first follower is connected to the output end of the first follower. The output end of the first follower is further connected to the first input end of the control processing module.

6. The electric assist vehicle controller detection device according to claim 4, characterized in that, The startup no-load current detection module includes a second gain resistor, an eighth resistor, a second capacitor, and a second amplifying device; The first end of the eighth resistor is connected to the first output end of the detection main module. The second end of the eighth resistor is respectively connected to the first end of the second amplifying device and the first plate of the second capacitor. The second plate of the second capacitor is connected to the second end of the second amplifying device. The third end of the second amplifying device is connected to the fourth end of the second amplifying device through the second gain resistor. The fifth end of the second amplifying device is connected to the second input end of the control processing module; The sixth end and the seventh end of the second amplifying device are respectively used for inputting the working voltage; The startup no-load current detection module further includes a second follower; The positive-phase input end of the second follower is connected to the fifth end of the second amplifying device. The negative-phase input end of the second follower is connected to the output end of the second follower. The output end of the second follower is further connected to the second input end of the control processing module.

7. The electric assist vehicle controller detection device according to claim 4, wherein, The load current detection module includes a third gain resistor, a ninth resistor, a third capacitor, and a third amplifying device; The first end of the ninth resistor is connected to the second output end of the detection main module. The second end of the ninth resistor is respectively connected to the first end of the third amplifying device and the first plate of the third capacitor. The second plate of the third capacitor is connected to the second end of the third amplifying device. The third end of the third amplifying device is connected to the fourth end of the third amplifying device through the third gain resistor. The fifth end of the third amplifying device is connected to the third input end of the control processing module; The sixth end and the seventh end of the third amplifying device are respectively used for inputting the working voltage; The load current detection module further includes a third follower; The positive-phase input end of the third follower is connected to the fifth end of the third amplifying device. The negative-phase input end of the third follower is connected to the output end of the third follower. The output end of the third follower is further connected to the third input end of the control processing module.

8. The electric assist vehicle controller detection device according to claim 1, wherein, The electric assist vehicle controller detection device further includes: a startup control module; The second control end of the control processing module is connected to the first end of the power-on control module, and the power-on control module is used to connect to the device to be detected; The control processing module is used to output a fourth electrical signal according to the first voltage, and the fourth electrical signal is used to trigger the conduction of the power-on control module; When the power-on control module is conducting, the power-on control module is used to output a fifth electrical signal according to the fourth electrical signal, and the fifth electrical signal is used to trigger the device to be detected to switch from the standby state to the power-on no-load state.

9. The electric assist vehicle controller detection device according to any one of claims 1-8, wherein, The electric assist vehicle controller detection device further includes a power supply module; The first end of the power supply module is used to connect to the device to be detected to supply power to the device to be detected, the second end of the power supply module is connected to the third input end of the detection main module, and the third end of the power supply module is connected to the power supply end of the control processing module.

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