Power converter and method of controlling the same

Abstract

The application provides a power converter and a control method thereof. When a current operation state of the power converter is not running, a switch unit is turned on, a strain sensor is used to sense deformation of a locking connection position and cause a resistance value change, a strain detection module is used to detect the resistance value of the strain sensor to generate an electrical signal, and a prompt unit is used to prompt when the electrical signal meets a preset abnormal condition. Alternatively, when the current operation state of the power converter is running, the strain sensor is used to sense deformation of the locking connection position and cause a resistance value change, the strain detection module is used to detect the resistance value of the strain sensor to generate an electrical signal, and a controller is used to prompt when the electrical signal meets a preset abnormal condition. The application can detect abnormal conditions in the locking connection process and prompt in a timely manner, thereby improving the reliability of the connecting piece in the power converter.

Description

Technical Field

[0001] This application relates to the field of power converter technology, and more particularly to power converters and their control methods. Background Technology

[0002] As the requirements for the operational reliability of power converters become increasingly stringent, the reliability of the connectors within the power converter has become particularly important. In power converters, some locking connections may be loose or overtightened, affecting the reliability of the connectors and consequently impacting the overall operational reliability of the power converter. Summary of the Invention

[0003] The purpose of this application is to provide a power converter and its control method, which can detect abnormalities and issue alarms in a timely manner, thereby improving the reliability of the connectors in the power converter.

[0004] The objective of this application is achieved through the following technical solution:

[0005] In a first aspect, this application provides a power converter, comprising a first connector, a second connector, a strain sensor, a strain detection module, a switching unit, a prompting unit, and a controller; the first connector and the second connector are used to form a locking connection position; the strain detection module is connected to the strain sensor, the switching unit, and the controller respectively, and the switching unit is also connected to the prompting unit; when the current operating state of the power converter is not running, the switching unit is turned on, the strain sensor is used to sense the deformation of the locking connection position and generate a change in resistance value, the strain detection module is used to detect the resistance value of the strain sensor to generate an electrical signal, and the prompting unit is used to provide a prompt when the electrical signal meets a preset abnormal condition; or, when the current operating state of the power converter is running, the strain sensor is used to sense the deformation of the locking connection position and generate a change in resistance value, the strain detection module is used to detect the resistance value of the strain sensor to generate an electrical signal, and the controller is used to provide a prompt when the electrical signal meets the preset abnormal condition.

[0006] In some embodiments, the power converter further includes a DC power supply, and the DC power supply, the switching unit, and the prompting unit are connected in series and then in parallel across the two ends of the strain detection module.

[0007] In some embodiments, the strain detection module includes a first strain detection unit and a second strain detection unit; the strain sensor, the first strain detection unit, the switch unit and the prompting unit are connected in series; the strain sensor, the second strain detection unit and the controller are connected in series.

[0008] In some embodiments, the prompting unit is configured to: determine that the electrical signal meets the preset abnormal condition when the voltage corresponding to the electrical signal is greater than a preset voltage threshold; or, determine that the electrical signal does not meet the preset abnormal condition when the voltage corresponding to the electrical signal is not greater than the preset voltage threshold.

[0009] In some embodiments, the controller is configured to: process the electrical signal to obtain a corresponding value of the electrical signal; determine that the electrical signal meets the preset abnormal condition when the corresponding value of the electrical signal is not within a preset value range; or determine that the electrical signal does not meet the preset abnormal condition when the corresponding value of the electrical signal is within the preset value range.

[0010] In some embodiments, the controller is further configured to: determine that the locking state of the locking connection position is unlocked when the value of the corresponding electrical signal is less than the minimum value of the preset value range; or, determine that the locking state of the locking connection position is normally locked when the value of the corresponding electrical signal is within the preset value range; or, determine that the locking state of the locking connection position is too tight when the value of the corresponding electrical signal is greater than the maximum value of the preset value range.

[0011] In some embodiments, the power converter further includes at least one of the following: a display unit for displaying the locking status of the locking connection position; and a communication unit for generating corresponding abnormal information of the locking status and transmitting it to a remote monitoring center when the locking status is not locked or too tight.

[0012] In some embodiments, the first connector is a copper busbar and the second connector is a connecting wire.

[0013] In some embodiments, the strain sensor is embedded inside the copper busbar to sense the deformation of the locking connection position in a first direction, the first direction being perpendicular to the terminal face of the copper busbar; or, the strain sensor is disposed on the terminal face of the copper busbar to sense the deformation of the locking connection position in a second direction, the second direction being parallel to the terminal face; or, the power converter further includes a first bolt for locking the connecting wire onto the copper busbar, the strain sensor being embedded inside the first bolt to sense the deformation of the locking connection position in the first direction.

[0014] In some embodiments, the first connector is a mounting base with a threaded hole, and the second connector is a second bolt; the strain sensor is embedded inside the mounting base to sense the deformation of the locking connection position in a third direction, the third direction being parallel to the length direction of the threaded hole.

[0015] Secondly, this application provides a control method for a power converter, the power converter including a first connector, a second connector, a strain sensor, a strain detection module, a switching unit, a prompting unit, and a controller; the first connector and the second connector are used to form a locking connection position; the strain detection module is connected to the strain sensor, the switching unit, and the controller respectively, and the switching unit is also connected to the prompting unit; the method includes: when the current operating state of the power converter is not running, the switching unit is turned on, the strain sensor senses the deformation of the locking connection position and a change in resistance value occurs, the strain detection module detects the resistance value of the strain sensor to generate an electrical signal, and the prompting unit provides a prompt when the electrical signal meets a preset abnormal condition; or, when the current operating state of the power converter is running, the strain sensor senses the deformation of the locking connection position and a change in resistance value occurs, the strain detection module detects the resistance value of the strain sensor to generate an electrical signal, and the controller provides a prompt when the electrical signal meets the preset abnormal condition.

[0016] In some embodiments, the process by which the prompting unit determines whether the electrical signal meets the preset abnormal condition includes: determining that the electrical signal meets the preset abnormal condition when the voltage of the corresponding electrical signal is greater than a preset voltage threshold; or determining that the electrical signal does not meet the preset abnormal condition when the voltage of the corresponding electrical signal is not greater than the preset voltage threshold.

[0017] In some embodiments, the process by which the controller determines whether the electrical signal meets the preset abnormal condition includes: processing the electrical signal to obtain a corresponding value of the electrical signal; determining that the electrical signal meets the preset abnormal condition when the corresponding value of the electrical signal is not within a preset value range; or determining that the electrical signal does not meet the preset abnormal condition when the corresponding value of the electrical signal is within the preset value range.

[0018] This application provides a power converter and its control method. The power converter includes a first connector, a second connector, a strain sensor, a strain detection module, a switching unit, a prompting unit, and a controller. The first and second connectors are used to form a locking connection position. The strain detection module is connected to the strain sensor, the switching unit, and the controller, respectively. The switching unit is also connected to the prompting unit. When the power converter is in a non-operating state, the switching unit is turned on. The strain sensor senses the deformation of the locking connection position and generates a change in resistance. The strain detection module detects the resistance value of the strain sensor to generate an electrical signal. The prompting unit provides a prompt when the electrical signal meets a preset abnormal condition. Alternatively, when the power converter is in an operating state, the strain sensor senses the deformation of the locking connection position and generates a change in resistance. The strain detection module detects the resistance value of the strain sensor to generate an electrical signal. The controller provides a prompt when the electrical signal meets a preset abnormal condition. This application embodiment installs a strain sensor at the locking connection position of the power converter to monitor the deformation of the locking connection position during the locking process, generating an electrical signal characterizing the deformation. By monitoring the electrical signal, abnormalities in the locking connection process can be detected and timely alerts can be provided. This improves situations such as incomplete or excessive locking during on-site operation, reduces equipment failures or damage caused by improper operation, improves the reliability of connectors in the power converter, and thus improves the operational reliability of the power converter. It not only improves the problem of machine damage caused by incorrect operation during on-site installation, but also reduces maintenance costs during use and extends the service life of the equipment. Attached Figure Description

[0019] This application will be further described below with reference to the accompanying drawings and specific embodiments.

[0020] Figure 1a This is a schematic diagram of the circuit structure of a power converter provided in an embodiment of this application.

[0021] Figure 1b This is a schematic diagram of the circuit structure of a power converter (decomposed strain detection module) provided in an embodiment of this application.

[0022] Figure 2a This is a schematic diagram of the circuit structure of another power converter provided in the embodiment of this application (the two current operating states do not share the strain detection unit).

[0023] Figure 2b This is a schematic diagram of the circuit structure of another power converter provided in the embodiment of this application (the two current operating states do not share the strain detection unit, and the strain detection module is decomposed).

[0024] Figure 3This is a side view of a power converter provided in an embodiment of this application.

[0025] Figure 4 This is a side sectional view of a copper busbar terminal assembly provided in an embodiment of this application (a strain sensor is embedded inside the copper busbar to sense deformation in a first direction).

[0026] Figure 5a This is a front view of a copper busbar terminal assembly provided in an embodiment of this application (a strain sensor is disposed on the terminal face of the copper busbar to sense deformation in a second direction).

[0027] Figure 5b yes Figure 5a The corresponding side sectional view.

[0028] Figure 6a This is a front view of another copper busbar terminal assembly provided in an embodiment of this application (a strain sensor is embedded inside the bolt to sense deformation in a first direction).

[0029] Figure 6b yes Figure 6a The corresponding side sectional view.

[0030] Figure 7a This is a side sectional view of a strain sensor, a mounting base, and a second bolt provided in an embodiment of this application (the strain sensor is embedded inside the mounting base to sense deformation in a third direction).

[0031] Figure 7b This is a front view of a chassis cover assembly provided in an embodiment of this application.

[0032] Figure 8 This is a flowchart illustrating a locking detection process provided in an embodiment of this application.

[0033] Figure 9 This is a structural block diagram of a computer device provided in an embodiment of this application.

[0034] In the diagram: 101, Power converter; 102, Strain sensor; 103, Strain detection module; 104, Controller; 105, DC power supply; 106, Switch unit; 107, Indication unit; 108, First strain detection unit; 109, Second strain detection unit; 100, Copper busbar terminal assembly; 11, Terminal base; 12, Copper busbar; 13, First bolt; 14, Connecting wire; 200, Chassis cover assembly; 21, Mounting base; 22, Second bolt. Detailed Implementation

[0035] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0036] In the description of the embodiments of this application, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0037] As the requirements for the operational reliability of the power converter 101 become increasingly stringent, the reliability of the connectors within the power converter 101 becomes particularly important. In the power converter 101, some locking connections may be either not locked properly or overtightened, affecting the reliability of the connectors and consequently impacting the operational reliability of the power converter 101.

[0038] See Figure 1a and Figure 1b , Figure 1a This is a schematic diagram of the circuit structure of a power converter 101 provided in an embodiment of this application. Figure 1b This is a schematic diagram of the circuit structure of a power converter 101 (decomposed strain detection module 103) provided in an embodiment of this application.

[0039] To improve related technologies, this application provides a power converter 101, which includes a first connector, a second connector, a strain sensor 102, a strain detection module 103, a switching unit 106, a prompting unit 107, and a controller 104. The first connector and the second connector are used to form a locking connection position. The strain detection module 103 is connected to the strain sensor 102, the switching unit 106, and the controller 104, respectively. The switching unit 106 is also connected to the prompting unit 107. When the power converter 101 is in a non-operating state, the switching unit 106 is turned on. The strain sensor 102 senses the deformation of the locking connection position and generates a change in resistance value. The strain detection module 103 detects the resistance value of the strain sensor 102 to generate an electrical signal. The prompting unit 107 provides a prompt when the electrical signal meets a preset abnormal condition. Alternatively, when the power converter 101 is currently in operation, the strain sensor 102 is used to sense the deformation of the locking connection position and cause a change in resistance value, the strain detection module 103 is used to detect the resistance value of the strain sensor 102 to generate an electrical signal, and the controller 104 is used to provide a prompt when the electrical signal meets the preset abnormal conditions.

[0040] For example, the strain detection module 103 may include a bridge circuit, and the strain sensor 102 is connected to the bridge circuit. When there is a stretching or compression action at the locking connection position, it will cause a change in the resistance value of the strain sensor 102, thereby causing a change in the output voltage of the bridge circuit. Based on this voltage change, the change in the resistance value of the strain sensor 102 can be determined, and thus the state of the locking connection position can be determined.

[0041] The above embodiments do not limit the number of strain sensors 102, which can be one or more. Multiple strain sensors 102 can be connected in parallel and respectively connected to the strain detection module 103. As an example, strain gauges can be used as strain sensors 102. For example, one or more strain sensors 102 can be provided for each locking connection position. When the number of strain sensors 102 at the locking connection position is greater than one, if some strain sensors 102 malfunction, the other strain sensors 102 can still promptly detect abnormalities in the locking state and provide timely alerts, thereby improving the accuracy of locking state monitoring.

[0042] The above embodiments do not limit the strain detection module 103, which may include, for example, a DC source (e.g., a voltage source or a lithium battery), an amplifier, a bridge (e.g., a Wheatstone bridge), a filter, etc., and the filter may be set at the input of the amplifier.

[0043] For example, when the power converter 101 is not running, such as during its installation, the switching unit 106 is turned on, and the strain detection module 103 and the prompting unit 107 are activated. During the locking process at the connection position, the strain sensor 102 senses the locking status of the connection position in real time and causes a change in resistance value, which in turn causes a change in the output voltage of the bridge in the strain detection module 103. This output voltage is amplified and transmitted to the prompting unit 107, which then provides a prompt based on this output voltage. In this way, situations where the power converter 101 is not locked or is too tight during installation can be detected in a timely manner, reducing the risk of malfunction or damage to the power converter 101 due to improper operation and improving the problem of machine damage caused by incorrect operation during on-site installation.

[0044] When the power converter 101 is running, i.e., during its use, the strain detection module 103 and controller 104 are operational. The strain sensor 102 continuously senses the locking status of the locking connection position, causing a change in its resistance value. This results in a change in the output voltage of the bridge circuit in the strain detection module 103. This output voltage is amplified and transmitted to the controller 104, which then provides a warning based on this output voltage. This allows for timely detection of situations where the power converter 101 is not properly locked during use, reducing the likelihood of malfunctions or damage to the power converter 101 due to prolonged use and lowering maintenance costs.

[0045] The above embodiment sets a strain sensor 102 at the locking connection position of the power converter 101 (e.g., by embedding, bonding, etc.) to convert the locking status information (e.g., represented by deformation information) during the locking connection process into an electrical signal characterizing the locking status. By monitoring the electrical signal, abnormal phenomena in the locking status of the power converter 101 (e.g., not locked or too tight) can be detected in real time and timely prompts can be made (e.g., audible and / or visual prompts). This can improve situations such as not locking or being too tight during on-site operation. The above embodiment realizes real-time monitoring of the locking status of the power converter 101, which can promptly detect situations of not locking or being too tight, reducing equipment (e.g., power converter 101) failures or damage caused by improper operation. It not only improves the problem of machine damage caused by incorrect operation during on-site installation, but also reduces maintenance costs during use and extends the service life of the equipment.

[0046] When the power converter 101 is currently in a non-operating state, the prompting unit 107 is used to provide a prompt when the electrical signal meets a preset abnormal condition. Specifically, in some embodiments, the prompting unit 107 can be used to: determine that the electrical signal meets the preset abnormal condition when the voltage corresponding to the electrical signal is greater than a preset voltage threshold; or, determine that the electrical signal does not meet the preset abnormal condition when the voltage corresponding to the electrical signal is not greater than the preset voltage threshold. The above embodiments do not limit the preset voltage threshold, which can be selected or set according to actual needs.

[0047] When the power converter 101 is currently in operation, the controller 104 is configured to provide a notification if the electrical signal meets the preset abnormal condition. Specifically, in some embodiments, the controller 104 may be configured to: process the electrical signal to obtain a corresponding value; determine that the electrical signal meets the preset abnormal condition when the corresponding value is not within a preset value range; or, determine that the electrical signal does not meet the preset abnormal condition when the corresponding value is within the preset value range. The above embodiments do not limit the preset value range; the preset voltage threshold can be selected or set according to actual needs.

[0048] The above embodiments do not limit the process of determining the locking state. In some embodiments, the controller 104 can also be used to: determine that the locking state of the locking connection position is not locked when the value of the corresponding electrical signal is less than the minimum value of the preset value range; or, determine that the locking state of the locking connection position is normally locked when the value of the corresponding electrical signal is within the preset value range; or, determine that the locking state of the locking connection position is too tight when the value of the corresponding electrical signal is greater than the maximum value of the preset value range.

[0049] In some embodiments, the power converter 101 may further include at least one of the following: a display unit (not shown) for displaying the locking status of the locking connection position; and a communication unit (not shown) for generating corresponding abnormal information about the locking status and transmitting it to a remote monitoring center when the locking status is not locked or too tight. The display unit can update the locking status of the locking connection position in a timely manner, facilitating clear and intuitive monitoring of the locking status by operators. The display unit may be, for example, an LED display or an OLED display. The communication unit can transmit abnormal information to the remote monitoring center in a timely manner, enabling remote monitoring and early warning. The communication unit may include wired communication components and / or wireless communication components. Abnormal information may include, for example, an abnormal locking status and its corresponding time information, a power converter 101 identifier, a locking connection position identifier, etc. The display unit, the prompting unit 107, and the communication unit may be integrated with the controller 104 or set up separately.

[0050] The power converter 101 has two current operating states, including, for example, non-operation and operation. As shown in Figure 1, the two current operating states can share a single strain detection module 103. The above embodiment does not limit the strain detection module 103, which may include, for example, a DC source (e.g., a voltage source), an amplifier, a filter, a bridge (e.g., a Wheatstone bridge), etc.

[0051] As shown in Figure 1, in some embodiments, the power converter 101 may further include a DC power supply 105. The DC power supply 105, the switching unit 106, and the prompting unit 107 are connected in series and then in parallel across the strain detection module 103. When the power converter 101 is not in operation, the DC power supply 105 can be used to power the strain detection module 103 and the prompting unit 107. The above embodiments do not limit the series connection order of the DC power supply 105, the switching unit 106, and the prompting unit 107. As an example, the DC power supply 105, the switching unit 106, and the prompting unit 107 are connected in series sequentially, or the switching unit 106, the DC power supply 105, and the prompting unit 107 are connected in series sequentially.

[0052] The locking detection process when two current operating states share a single strain detection module 103 is explained in detail below.

[0053] In the first scenario, when the power converter 101 is not in operation, the controller 104 is not working. When the locking connection position is engaged, the switching unit 106 is activated, and the DC power supply 105 is connected to the strain detection module 103. The strain sensor 102 is stretched or compressed, causing a change in resistance. The strain detection module 103 detects this change in resistance and generates an electrical signal. When the voltage U corresponding to the electrical signal is greater than the target voltage threshold UT, the prompting unit 107 provides a prompt (e.g., an audible signal, a visual signal, etc.) to remind the operator that the locking connection position has been properly installed and the specified installation torque has been reached, eliminating the need for further tightening.

[0054] In the second scenario, when the power converter 101 is currently running, assuming the voltage of the DC source in the strain detection module 103 is much greater than the voltage of the DC power supply 105, the branch containing the DC power supply 105 will not operate, and the controller 104 will operate. Specifically, when the switching unit 106 is open, the branch containing the DC power supply 105 is in an open-circuit state, and therefore this branch does not operate; when the switching unit 106 is closed, since the DC source in the strain detection module 103 is connected in parallel with the DC power supply 105, and the voltage of the DC source is much greater than the voltage of the DC power supply 105, the branch containing the DC power supply 105 enters a protection state (at this time, this branch is short-circuited), and the branch containing the DC power supply 105 does not operate. When the locking connection position is engaged, the strain sensor 102 is stretched or compressed, causing deformation and a change in resistance. The strain detection module 103 detects this change in resistance and generates an electrical signal (e.g., an analog signal). In the electrical signal input controller 104, the controller 104 can process the electrical signal to obtain the corresponding value of the electrical signal, for example, converting the electrical signal into a digital signal W. The controller 104 compares the digital signal W with a target value range (e.g., the system input empirical threshold range) W1 to W2. When the digital signal W satisfies W1≤W≤W2, the value W is within the target value range (i.e., W1 to W2), and the locking state of the locking connection position can be determined to be normal locking. When W is less than W1, the locking state of the locking connection position can be determined to be unlocked; when W is greater than W2, the locking state of the locking connection position can be determined to be overtight. The two locking states of unlocked and overtight are considered abnormal situations, and the locking connection position needs to be adjusted.

[0055] See Figure 2a and Figure 2b , Figure 2a This is a schematic diagram of the circuit structure of another power converter 101 provided in this application embodiment (the two current operating states do not share the strain detection unit). Figure 2bThis is a schematic diagram of the circuit structure of another power converter 101 provided in this application embodiment (the two current operating states do not share the strain detection unit, and the strain detection module 103 is decomposed).

[0056] In some embodiments, the strain detection module 103 may include a first strain detection unit 108 and a second strain detection unit 109; the strain sensor 102, the first strain detection unit 108, the switch unit 106 and the prompting unit 107 are connected in series; the strain sensor 102, the second strain detection unit 109 and the controller 104 are connected in series.

[0057] As shown in Figure 2, two current operating states can each be configured with a separate strain detection unit. Specifically, the strain detection module 103 may include a first strain detection unit 108 and a second strain detection unit 109. The above embodiment does not limit the first strain detection unit 108, which may include, for example, a DC source (e.g., a lithium battery), an amplifier, a filter, a bridge circuit (e.g., a Wheatstone bridge), etc. The above embodiment does not limit the second strain detection unit 109, which may include, for example, a DC source (e.g., a voltage source), an amplifier, a filter, a bridge circuit (e.g., a Wheatstone bridge), etc. The DC sources located in the first strain detection unit 108 and the second strain detection unit 109 may be different. The DC source in the first strain detection unit 108 can power both the first strain detection unit 108 and the indication unit 107 when the unit is not in operation.

[0058] The locking detection process is explained in detail below when a strain detection unit is set up separately for each of the two current operating states.

[0059] In the first scenario, when the power converter 101 is not in operation, the controller 104 is not working. When the locking connection position is engaged, the switching unit 106 is activated, and the strain sensor 102 is stretched or compressed, causing a change in resistance. The first strain detection unit 108 detects this change in resistance and generates an electrical signal. When the voltage U corresponding to the electrical signal is greater than the target voltage threshold UT, the prompting unit 107 provides a prompt (e.g., an audible signal, a visual signal, etc.) to remind the operator that the locking connection position has been properly installed and the specified installation torque has been reached, eliminating the need for further tightening.

[0060] In the second scenario, when the power converter 101 is currently running, the controller 104 operates. When the locking connection position is engaged, the strain sensor 102 is stretched or compressed, causing a change in resistance. The second strain detection unit 109 detects this change in resistance and generates an electrical signal (e.g., an analog signal). This electrical signal is input to the controller 104, which processes it to obtain a corresponding numerical value, for example, by converting the signal into a digital signal W. The controller 104 compares the digital signal W with a target numerical range (e.g., an empirical threshold range input by the system) W1 to W2. If the digital signal W satisfies W1 ≤ W ≤ W2, the value W is within the target numerical range (i.e., W1 to W2), and the locking state of the locking connection position can be determined to be normal locking. When W is less than W1, the locking state of the locking connection position can be determined as not locked; when W is greater than W2, the locking state of the locking connection position can be determined as too tight; the two locking states of not locked and too tight can be regarded as abnormal situations, and the locking connection position needs to be adjusted.

[0061] See Figure 3 , Figure 3 This is a side view of a power converter 101 provided in an embodiment of this application. In some embodiments, the first connector may be a copper busbar 12, and the second connector may be a connecting wire 14. Alternatively, in other embodiments, the first connector may be a mounting base 21 with a threaded hole, and the second connector may be a second bolt 22.

[0062] The above embodiments do not limit the position of the strain sensor 102. See also Figure 4 , Figure 4 This is a side sectional view of a copper busbar terminal assembly 100 provided in an embodiment of this application (strain sensor 102 is embedded inside the copper busbar 12 to sense deformation in a first direction). Figure 4 As shown, in some embodiments, the strain sensor 102 may be embedded inside the copper busbar 12 to sense the deformation of the locking connection position in a first direction, the first direction being perpendicular to the terminal face of the copper busbar 12. As an example, the copper busbar 12 may be disposed on the terminal base 11.

[0063] See Figure 5a and Figure 5b , Figure 5a This is a front view of a copper busbar terminal assembly 100 provided in an embodiment of this application (the strain sensor 102 is disposed on the terminal face of the copper busbar 12 to sense deformation in the second direction). Figure 5b yes Figure 5a The corresponding side sectional view. For example... Figure 5a and Figure 5bAs shown, in some other embodiments, the strain sensor 102 may be disposed on the terminal face of the copper busbar 12 to sense the deformation of the locking connection position in a second direction, the second direction being parallel to the terminal face.

[0064] See Figure 6a and Figure 6b , Figure 6a This is a front view of another copper busbar terminal assembly 100 provided in this application embodiment (strain sensor 102 is embedded inside the bolt to sense deformation in the first direction). Figure 6b yes Figure 6a Corresponding side sectional view. In some other embodiments, the power converter 101 may further include a first bolt 13 for securing the connecting wire 14 to the copper busbar 12, and the strain sensor 102 may be embedded inside the first bolt 13 to sense the deformation of the locking connection position in the first direction.

[0065] See Figure 7a and Figure 7b , Figure 7a This is a side sectional view of a strain sensor 102, a mounting base 21, and a second bolt 22 provided in an embodiment of this application (the strain sensor 102 is embedded inside the mounting base 21 to sense deformation in a third direction). Figure 7b This is a front view of a chassis cover assembly 200 provided in an embodiment of this application. In some embodiments, the first connector may be a mounting base 21 with a threaded hole, and the second connector may be a second bolt 22; the strain sensor 102 is embedded inside the mounting base 21 to sense the deformation of the locking connection position in a third direction, the third direction being parallel to the length direction of the threaded hole.

[0066] This application embodiment also provides a control method for a power converter 101. The power converter 101 includes a first connector, a second connector, a strain sensor 102, a strain detection module 103, a switching unit 106, a prompting unit 107, and a controller 104. The first connector and the second connector are used to form a locking connection position. The strain detection module 103 is connected to the strain sensor 102, the switching unit 106, and the controller 104 respectively. The switching unit 106 is also connected to the prompting unit 107. The method includes: when the current operating state of the power converter 101 is not running, the switching unit 106... When the circuit is turned on, the strain sensor 102 senses the deformation at the locking connection position and a change in resistance occurs. The strain detection module 103 detects the resistance value of the strain sensor 102 to generate an electrical signal. The prompting unit 107 provides a prompt when the electrical signal meets a preset abnormal condition. Alternatively, when the power converter 101 is currently running, the strain sensor 102 senses the deformation at the locking connection position and a change in resistance occurs. The strain detection module 103 detects the resistance value of the strain sensor 102 to generate an electrical signal. The controller 104 provides a prompt when the electrical signal meets the preset abnormal condition.

[0067] In some embodiments, the process by which the prompting unit 107 determines whether the electrical signal meets the preset abnormal condition may include: determining that the electrical signal meets the preset abnormal condition when the voltage of the corresponding electrical signal is greater than a preset voltage threshold; or determining that the electrical signal does not meet the preset abnormal condition when the voltage of the corresponding electrical signal is not greater than the preset voltage threshold.

[0068] In some embodiments, the process by which the controller 104 determines whether the electrical signal meets the preset abnormal condition may include: processing the electrical signal to obtain a corresponding value of the electrical signal; determining that the electrical signal meets the preset abnormal condition when the corresponding value of the electrical signal is not within a preset value range; or determining that the electrical signal does not meet the preset abnormal condition when the corresponding value of the electrical signal is within the preset value range.

[0069] See Figure 8 , Figure 8 This is a flowchart illustrating a locking detection process provided in an embodiment of this application.

[0070] In a specific application scenario, the locking detection process may include steps S1 to S5.

[0071] Step S1: Install the strain sensor 102 at the locking connection position of the power converter 101. The strain sensor 102 can be a strain gauge, which can be a strain gauge used for testing.

[0072] Step S2: Connect the installed strain sensor 102 to the strain detection module 103.

[0073] Step S3: Determine whether the power converter 101 is running; if it is not running, proceed to step S4; if it is running, proceed to step S5.

[0074] Step S4: When the electrical signal indicates that the corresponding voltage is greater than the preset voltage threshold, the prompting unit 107 will sound an alarm.

[0075] Step S5: Process the electrical signal. If the corresponding value of the electrical signal is not within the preset value range, the controller 104 will sound an alarm.

[0076] As can be seen, the above embodiments enable real-time monitoring of the locking connection position of the power converter 101, allowing for timely detection of loose or overtight connections, thus reducing equipment malfunctions or damage caused by improper operation. The use of the strain sensor 102 converts mechanical deformation into quantifiable electrical signals, improving the accuracy and reliability of locking detection. Furthermore, it mitigates machine damage caused by incorrect operation during on-site installation, reduces maintenance costs, and extends equipment lifespan. Finally, it provides a safer and more reliable guarantee for the operation of the power converter 101, enhancing the overall performance and market competitiveness of the equipment.

[0077] This application also provides a computer-readable storage medium storing a computer program that, when executed by a processor, implements any of the above methods.

[0078] This application also provides a computer program product, which includes a computer program that, when executed by a processor, implements any of the methods described above.

[0079] The computer program product may be in the form of a portable compact disc read-only memory (CD-ROM) and include program code, and may run on a terminal device, such as a personal computer. However, the computer program product of this application is not limited thereto, and the computer program product may be in any combination of one or more computer-readable media.

[0080] This application also provides a chip for performing any of the above methods.

[0081] See Figure 9 , Figure 9This is a structural block diagram of a computer device provided in an embodiment of this application.

[0082] This application also provides a computer device, which includes a memory and a processor. The memory stores a computer program, and the processor executes the computer program to implement any of the methods described above.

[0083] The embodiments of this application do not limit the computer device, which may be, for example, a local computer device, a cloud computer device, a distributed computer device, etc.

[0084] The computer device may include: a memory 110, a processor 120, and a communication interface 130. The memory 110, the processor 120, and the communication interface 130 are connected through internal connection paths.

[0085] The memory 110 is used to store computer programs, which in some implementations may include code for implementing the methods of the embodiments of this application.

[0086] The processor 120 executes the computer program stored in the memory 110 to control the communication interface 130 to receive input data and information, and output operation results and other data. In some implementations, when the solutions of the embodiments of this application are implemented by software or firmware, the computer program used to implement the solutions of the embodiments of this application can be stored in the processor 120 and executed by the processor 120.

[0087] The memory 110 may be volatile memory or non-volatile memory, or may include both volatile and non-volatile memory. The non-volatile memory may be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), or flash memory. The volatile memory may be random access memory (RAM). It should be noted that the memory 110 described herein is intended to include, but is not limited to, any memory of these and other suitable types. As an example, the memory 110 includes random access memory (RAM), cache memory, and read-only memory (ROM). The memory 110 stores a computer program that can be executed by processor 120, causing processor 120 to implement the steps of any of the methods described above.

[0088] The processor 120 can be a central processing unit (CPU), or it can be other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor can be a microprocessor, or the processor 120 can be any conventional processor.

[0089] In implementation, each step of the above method can be completed by the integrated logic circuitry of the hardware in the processor 120 or by instructions in software form. The method disclosed in the embodiments of this application can be directly implemented by the hardware processor, or by a combination of hardware and software modules in the processor 120. The software modules can be located in mature storage media in the art, such as random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, or registers. This storage medium is located in the memory 110, and the processor 120 reads the information in the memory 110 and, in conjunction with its hardware, completes the steps of the above method. To avoid repetition, detailed descriptions are not provided here.

[0090] In some implementations, in addition to the hardware units described above, computer devices may also include software modules, such as operating systems, basic input / output systems (BIOS), and application software.

[0091] An operating system is used to manage the hardware and / or software resources of a computer device; it is the kernel and foundation of the computer. The operating system handles fundamental tasks such as managing and configuring memory, determining the priority of system resource allocation, controlling input and output devices, operating the network, and managing the file system. To facilitate user operation, most operating systems provide a user interface for interaction with the system.

[0092] The BIOS is used to perform hardware initialization during the power-on boot phase and to provide runtime services for the operating system and applications. In some implementations, the BIOS can also monitor and display processor temperature and execute temperature protection strategies.

[0093] Application software, also known as an application program, can be understood as software written for a specific user application purpose, and is one of the main categories of computer software. For example, application software can be a program used to achieve purposes such as power control and temperature management.

[0094] It is understood that the specific examples in this application are only intended to help those skilled in the art better understand the implementation of this application, and are not intended to limit the scope of protection of this application.

[0095] It is understood that in the various embodiments of this application, the sequence number of each process does not imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of this application.

[0096] It is understood that the various implementation methods described in this application can be implemented individually or in combination, and this application does not limit them.

[0097] Unless otherwise stated, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to limit the scope of this application. The term "and / or" as used in this application includes any and all combinations of one or more of the associated listed items. The singular forms "a," "the," and "the" as used in this application and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise.

[0098] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0099] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the embodiments described above can be referred to the corresponding processes in other embodiments, and will not be repeated here.

[0100] In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between apparatuses or units may be electrical, mechanical, or other forms.

[0101] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of the technical solution in this application, depending on actual needs.

[0102] In addition, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.

[0103] If a function is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, essentially, or the part that contributes to the prior art, or part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0104] The above are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A power converter, characterized by, The power converter includes a first connector, a second connector, a strain sensor, a strain detection module, a switching unit, a prompting unit, and a controller; The first connector and the second connector are used to form a locking connection position; the strain detection module is connected to the strain sensor, the switching unit and the controller respectively, and the switching unit is also connected to the prompting unit; When the power converter is currently not in operation, the switching unit is turned on, the strain sensor is used to sense the deformation of the locking connection position and the resistance value changes, the strain detection module is used to detect the resistance value of the strain sensor to generate an electrical signal, and the prompting unit is used to provide a prompt when the electrical signal meets the preset abnormal conditions. Alternatively, when the power converter is currently in operation, the strain sensor is used to sense the deformation of the locking connection position and cause a change in resistance value, the strain detection module is used to detect the resistance value of the strain sensor to generate an electrical signal, and the controller is used to provide a prompt when the electrical signal meets the preset abnormal conditions.

2. The power converter of claim 1, wherein, The power converter also includes a DC power supply, and the DC power supply, the switching unit, and the prompting unit are connected in series and then in parallel across the two ends of the strain detection module.

3. The power converter of claim 1, wherein, The strain detection module includes a first strain detection unit and a second strain detection unit. The strain sensor, the first strain detection unit, the switch unit, and the prompting unit are connected in series; The strain sensor, the second strain detection unit, and the controller are connected in series.

4. The power converter of claim 1, wherein, The prompting unit is used for: When the voltage corresponding to the electrical signal is greater than a preset voltage threshold, the electrical signal is deemed to meet the preset abnormal condition; or, If the voltage of the electrical signal is not greater than the preset voltage threshold, the electrical signal is deemed not to meet the preset abnormal condition.

5. The power converter of claim 1, wherein, The controller is used for: The electrical signal is processed to obtain the corresponding value of the electrical signal; When the value of the electrical signal is not within the preset value range, the electrical signal is deemed to meet the preset abnormal condition. Alternatively, if the corresponding value of the electrical signal is within the preset value range, the electrical signal is determined not to meet the preset abnormal condition.

6. The power converter of claim 5, wherein, The controller is also used for: When the value of the corresponding electrical signal is less than the minimum value of the preset value range, the locking state of the locking connection position is determined to be unlocked; or, When the value of the electrical signal is within the preset value range, the locking state of the locking connection position is considered to be normal locking; or, When the value of the corresponding electrical signal is greater than the maximum value of the preset value range, the locking state of the locking connection position is determined to be too tight.

7. The power converter of claim 6, wherein, The power converter further includes at least one of the following: The display unit is used to display the locking status of the locking connection position; The communication unit is used to generate abnormal information corresponding to the locking state and transmit it to the remote monitoring center when the locking state is not locked or too tight.

8. The power converter of any of claims 1-7, wherein, The first connector is a copper busbar, and the second connector is a connecting wire.

9. The power converter of claim 8, wherein, The strain sensor is embedded inside the copper busbar to sense the deformation of the locking connection position in a first direction, the first direction being perpendicular to the terminal face of the copper busbar; or... The strain sensor is disposed on the terminal face of the copper busbar to sense the deformation of the locking connection position in a second direction, the second direction being parallel to the terminal face; or... The power converter also includes a first bolt for locking the connecting wire to the copper busbar, and a strain sensor embedded inside the first bolt to sense the deformation of the locking connection position in the first direction.

10. The power converter of any of claims 1-7, wherein, The first connector is a mounting base with a threaded hole, and the second connector is a second bolt; The strain sensor is embedded inside the mounting base to sense the deformation of the locking connection position in a third direction, which is parallel to the length direction of the threaded hole.

11. A control method of a power converter, characterized by, The power converter includes a first connector, a second connector, a strain sensor, a strain detection module, a switching unit, a prompting unit, and a controller; The first connector and the second connector are used to form a locking connection position; the strain detection module is connected to the strain sensor, the switching unit and the controller respectively, and the switching unit is also connected to the prompting unit; The method includes: When the power converter is currently inactive, the switching unit is turned on, the strain sensor senses the deformation at the locking connection position and a change in resistance occurs, the strain detection module detects the resistance value of the strain sensor to generate an electrical signal, and the prompting unit provides a prompt when the electrical signal meets preset abnormal conditions; or... When the power converter is currently in operation, the strain sensor senses the deformation of the locking connection position and a change in resistance value occurs. The strain detection module detects the resistance value of the strain sensor to generate an electrical signal. The controller provides a prompt when the electrical signal meets the preset abnormal conditions.

12. The control method for the power converter according to claim 11, characterized in that, The process by which the prompting unit determines whether the electrical signal meets the preset abnormal condition includes: When the voltage corresponding to the electrical signal is greater than a preset voltage threshold, the electrical signal is deemed to meet the preset abnormal condition; or, If the voltage corresponding to the electrical signal is not greater than the preset voltage threshold, the electrical signal is deemed not to meet the preset abnormal condition.

13. The control method of a power converter according to claim 11, wherein The process by which the controller determines whether the electrical signal meets the preset abnormal condition includes: The electrical signal is processed to obtain the corresponding value of the electrical signal; When the value of the electrical signal is not within the preset value range, the electrical signal is deemed to meet the preset abnormal condition; or, when the value of the electrical signal is within the preset value range, the electrical signal is deemed not to meet the preset abnormal condition.

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