Current detection circuit

Abstract

The utility model discloses a current detection circuit. Relates to the technical field of current detection, and the current detection circuit comprises a current conversion module which is used for converting an analog signal corresponding to a target current of a target battery cell into a target current digital quantity; the logic processing module is connected with the current conversion module and is used for outputting a target signal to a high-side driving module based on a comparison detection result between a preset threshold value and the target current digital quantity; and the high-side driving module is connected with the logic processing module and is used for determining whether external power supply is cut off or not based on the target signal. According to the invention, the problem that the reliability of the current detection and diagnosis protection of the battery cell is poor because the current detection and diagnosis protection of the battery cell is realized through different IC functional circuits in the prior art is solved.

Description

Technical Field

[0001] The present application relates to the technical field of current detection, and in particular to a current detection circuit. Background Art

[0002] Cell current detection, diagnosis, and protection are fundamental requirements for battery management systems (BMSs) and essential for ensuring BMS safety and preventing thermal runaway. However, detection, diagnosis, and protection functions are typically implemented by combining multiple ICs, such as one responsible for data acquisition and diagnosis, and another for protection execution. This approach is costly and difficult to design, leading to a high frequency of failures and poor reliability of cell current detection, diagnosis, and protection.

[0003] Currently, no effective solution has been proposed to address the problem that the reliability of cell current detection and diagnosis protection is poor due to the use of different IC functional circuits in related technologies. Utility Model Content

[0004] The main purpose of the present application is to provide a current detection circuit to solve the problem in the related art that the battery cell current detection diagnosis protection is realized by different IC functional circuits, resulting in poor reliability of the battery cell current detection diagnosis protection.

[0005] To achieve the above objectives, according to one aspect of the present application, a current detection circuit is provided. The current detection circuit includes: a current conversion module for converting an analog signal corresponding to a target current of a target battery cell into a digital value of the target current; a logic processing module, connected to the current conversion module, for outputting a target signal to a high-side driver module based on a comparison detection result between a preset threshold and the digital value of the target current; and the high-side driver module, connected to the logic processing module, for determining whether to cut off external power supply based on the target signal.

[0006] Furthermore, the current conversion module includes: an analog-to-digital conversion module, connected to the digital correction module, for converting an analog signal corresponding to the target current of the target battery cell into a digital signal corresponding to the target current; the digital correction module is used to process the digital signal corresponding to the target current to obtain the digital value of the target current.

[0007] Furthermore, the current conversion module further includes: an analog filter connected to the analog-to-digital conversion module, configured to filter the received initial analog signal corresponding to the target current to obtain an analog signal corresponding to the target current.

[0008] Furthermore, the analog-to-digital conversion module includes: a carrier suppressed analog modulator, used to modulate the analog signal corresponding to the target current to obtain a modulated signal; a digital filter, connected to the carrier suppressed analog modulator, used to filter the modulated signal to obtain a digital signal corresponding to the target current.

[0009] Furthermore, the analog-to-digital conversion module includes: a first compensation module, connected to the digital filter, for performing compensation processing when the digital filter performs filtering processing on the modulated signal to obtain a digital signal corresponding to the target current.

[0010] Furthermore, the digital correction module includes: a digital corrector, connected to the analog-to-digital conversion module, for correcting the digital signal corresponding to the target current to obtain a corrected digital signal; a digital signal processor, connected to the digital corrector, for performing average value processing on the corrected digital signal to obtain the digital quantity of the target current; a second compensation module, connected to the digital corrector and the digital signal processor, for performing compensation processing when the digital corrector corrects the digital signal corresponding to the target current to obtain the corrected digital signal, and for performing compensation processing when the digital signal processor performs average value processing on the corrected digital signal to obtain the digital quantity of the target current.

[0011] Furthermore, the logic processing module also includes: an electronic buffer for receiving a control signal to drive the comparator module to work; the comparator module is used to output a target signal to the high-side driver module based on a comparison detection result between a preset threshold and the target current digital value.

[0012] Furthermore, the comparator module includes: a serial peripheral interface for receiving the target current digital quantity and writing the target current digital quantity into a register; the register for storing the target current digital quantity; and a comparator for outputting a target signal to the high-side driver module based on a comparison detection result between a preset threshold and the target current digital quantity.

[0013] Furthermore, the current detection circuit also includes: a boost circuit, connected to the high-side driver module and the logic processing module, wherein the logic processing module provides a clock signal to the boost circuit so that the boost circuit outputs a preset voltage value to the high-side driver module to drive the high-side driver module to operate based on the preset voltage value.

[0014] Furthermore, the boost circuit is a DC boost circuit.

[0015] The present application adopts the following device: a current conversion module for converting an analog signal corresponding to the target current of a target battery cell into a target current digital value; a logic processing module connected to the current conversion module for outputting a target signal to a high-side driver module based on a comparison detection result between a preset threshold and the target current digital value; the high-side driver module is connected to the logic processing module for determining whether to cut off the external power supply based on the target signal, thereby solving the problem that the reliability of the battery cell current detection diagnosis protection is poor due to the different IC functional circuits used in the related art. In this solution, the analog signal corresponding to the current of the target battery cell is converted into a target current digital value by the current conversion module, and then the logic processing module outputs the target signal to the high-side driver module based on the comparison detection result between the preset threshold and the target current digital value. Finally, the high-side driver module determines whether to cut off the external power supply based on the target signal. The battery cell current detection diagnosis protection is realized by integrating the current conversion module, the logic processing module and the high-side driver module, thereby achieving the effect of improving the reliability of the battery cell current detection diagnosis protection. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings, which constitute part of this application, are intended to provide a further understanding of this application. The exemplary embodiments and descriptions of this application are intended to explain this application and do not constitute an improper limitation on this application. In the accompanying drawings:

[0017] Figure 1 This is a schematic diagram of a current detection device provided according to an embodiment of the present application. Figure 1 ;

[0018] Figure 2 This is a schematic diagram of a current detection device provided according to an embodiment of the present application. Figure 2 ;

[0019] Figure 3 The schematic diagram of the analog-to-digital conversion module 100 provided in accordance with the embodiment of the present application is shown in FIG. Figure 1 ;

[0020] Figure 4 The schematic diagram of the analog-to-digital conversion module 100 provided in accordance with the embodiment of the present application is shown in FIG. Figure 2 ;

[0021] Figure 5 This is a schematic diagram of a current detection device provided according to an embodiment of the present application. Figure 3 ;

[0022] Figure 6 is a schematic diagram of a logic processing module 20 provided according to an embodiment of the present application;

[0023] Figure 7This is a schematic diagram of a current detection device provided according to an embodiment of the present application. Figure 4 ;

[0024] Figure 8 This is a schematic diagram of a current detection device provided according to an embodiment of the present application. Figure 5 ;

[0025] Among them, 10-voltage conversion module, 20-logic processing module, 30-high-side driver module, 100-analog-to-digital conversion module, 101-digital correction module, 1000-carrier suppression analog modulator, 1001-digital filter, 1002-first compensation module, 1010-digital corrector, 1011-digital signal processor, 1012-second compensation module, 200-electronic buffer, 201-comparator module, 2010-serial peripheral interface, 2011-register, 2012-comparator, 40-boost circuit. DETAILED DESCRIPTION

[0026] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0027] In order to enable those skilled in the art to better understand the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of this application.

[0028] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequential order. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0029] It should be noted that the relevant information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for display and analysis, etc.) involved in this disclosure are all information and data authorized by the user or fully authorized by all parties. For example, an interface is set up between this system and the relevant user or organization. Before obtaining relevant information, it is necessary to send an acquisition request to the aforementioned user or organization through the interface, and obtain the relevant information after receiving the consent information fed back by the aforementioned user or organization.

[0030] The present invention will be described below in conjunction with a preferred implementation device. Figure 1 This is a schematic diagram of a current detection circuit provided according to an embodiment of the present application. Figure 1 ,like Figure 1 As shown, the current detection circuit includes: a current conversion module 10 , a logic processing module 20 and a high-side driver module 30 .

[0031] The current conversion module 10 is used to convert the analog signal corresponding to the target current of the target battery cell into a digital value of the target current;

[0032] The logic processing module 20 is connected to the current conversion module 10 and is used to output a target signal to the high-side driver module 30 based on a comparison detection result between a preset threshold and a target current digital value;

[0033] The high-side driver module 30 is connected to the logic processing module 20 and is used to determine whether to cut off the external power supply based on the target signal.

[0034] Alternatively, as Figure 1 As shown, the current detection circuit provided in the embodiment of the present application includes at least a current conversion module 10, a logic processing module 20 and a high-side driver module 30. The current conversion module 10 is connected to the logic processing module 20, and the logic processing module 20 is connected to the high-side driver module 30. The analog signal corresponding to the target current of the target battery cell is received through the current conversion module 10. It should be noted that the current of the target battery cell can be collected by a current acquisition device, and then the collected current is input to the receiving PIN pin in the current conversion module 10. After receiving the analog signal corresponding to the target current of the target battery cell, the current conversion module 10 discretely quantizes and filters the analog current signal to extract the digital signal, and converts the obtained digital quantity into an accurate current digital quantity, thereby obtaining the above-mentioned target current digital quantity.

[0035] After obtaining the above-mentioned target current digital quantity, the current conversion module 10 can be transmitted to the logic processing module 20 through the serial peripheral interface (SPI interface). The logic processing module 20 outputs a target signal to the high-side driver module 30 based on the comparison detection result between the preset threshold and the target current digital quantity, that is, the logic processing module performs a threshold judgment. According to the threshold judgment result, a response signal is triggered to the high-side driver module 30. The high-side driver module 30 determines whether to cut off the external power supply based on the target signal. For example, when the battery cell current value reaches the configuration threshold, the CMD logic control signal of the high-side driver module 30 is triggered to perform a shutdown action, thereby cutting off the external power supply of the battery for protection.

[0036] It should be noted that the CMD logic control signal of the high-side driver module 30 refers to a logic signal for controlling the switching state of the high-side driver. In the application of the high-side driver, these signals can be controlled through an SPI interface or other communication protocols.

[0037] It should be noted that the logic processing module 20 can be implemented by a digital comparator or a current detector.

[0038] In summary, the analog signal corresponding to the current of the target battery cell is converted into a target current digital quantity through the current conversion module, and then the logic processing module outputs the target signal to the high-side driver module based on the comparison detection result between the preset threshold and the target current digital quantity. Finally, the high-side driver module determines whether to cut off the external power supply based on the target signal. The battery cell current detection diagnosis protection is realized by the integration of the current conversion module, the logic processing module and the high-side driver module, thereby achieving the effect of improving the reliability of the battery cell current detection diagnosis protection.

[0039] Optionally, in the current detection circuit provided in the embodiment of the present application, the current conversion module 10 includes: an analog-to-digital conversion module 100, connected to the digital correction module 101, for converting the analog signal corresponding to the target current of the target battery cell into a digital signal corresponding to the target current; the digital correction module 101, for processing the digital signal corresponding to the target current to obtain a digital value of the target current.

[0040] In an optional embodiment, if Figure 2As shown, the current conversion module 10 includes an analog-to-digital conversion module 100 and a digital correction module 101. The analog-to-digital conversion module 100 is used to modulate the analog signal corresponding to the target current to obtain a modulated signal. For example, the analog signal is discretized and then the discretized signal is filtered to extract the digital signal to obtain the digital signal corresponding to the target current. In order to improve the accuracy of the digital signal, the digital correction module 101 verifies and encodes the digital signal to obtain an accurate current digital quantity. For example, the digital quantity is verified and encoded through register mapping control and NVM storage parameter configuration to obtain an accurate current digital quantity.

[0041] In an optional embodiment, a diagnostic module (DIAG) may also be provided in the current conversion module 10. The accuracy of the current value may be monitored and diagnosed by the DIAG. The DIAG may be used to detect whether the current conversion module 10 is operating normally, whether the current exceeds a threshold, etc.

[0042] The digital current value corresponding to the battery cell can be accurately extracted through the analog-to-digital conversion module 100 and the digital correction module 101 .

[0043] Optionally, in the current detection circuit provided in the embodiment of the present application, the current conversion module 10 also includes: an analog filter 102, which is connected to the analog-to-digital conversion module 100 and is used to filter the received initial analog signal corresponding to the target current to obtain an analog signal corresponding to the target current.

[0044] In an optional embodiment, if Figure 3 As shown, the current conversion module 10 is further provided with an analog filter 102, which is connected to the analog-to-digital conversion module 100. The analog filter 102 filters the received initial analog signal corresponding to the target current to obtain an analog signal corresponding to the target current.

[0045] The analog filter can effectively remove or reduce unnecessary frequency components while retaining the required signal, thereby improving the accuracy of the subsequent analog signal corresponding to the target current.

[0046] Optionally, in the current detection circuit provided in an embodiment of the present application, the analog-to-digital conversion module 100 includes: a carrier suppression analog modulator 1000, used to modulate the analog signal corresponding to the target current to obtain a modulated signal; a digital filter 1001, connected to the carrier suppression analog modulator 1000, used to filter the modulated signal to obtain a digital signal corresponding to the target current.

[0047] In an optional embodiment, if Figure 4As shown, the analog-to-digital conversion module 100 is composed of a carrier-suppressed analog modulator 1000 and a digital filter 1001. After receiving the current value of the target battery cell, the carrier-suppressed analog modulator 1000 modulates the analog signal corresponding to the target current. For example, the analog signal corresponding to the target current is discretized to obtain the modulated signal. The digital filter 1001 filters the modulated signal to obtain a digital signal corresponding to the target current. That is, the digital filter 1001 filters the discretized signal to obtain the digital signal corresponding to the target current.

[0048] Optionally, in the current detection circuit provided in an embodiment of the present application, the analog-to-digital conversion module 100 includes: a first compensation module 1002, which is connected to the digital filter 1001 and is used to perform compensation processing when the digital filter 1001 filters the modulated signal to obtain a digital signal corresponding to the target current.

[0049] In an optional embodiment, if Figure 4 As shown, the analog-to-digital conversion module 100 also includes a first compensation module 1002. The first compensation module 1002 is connected to the digital filter 1001 so that when the digital filter 1001 filters the modulated signal, compensation processing is performed to obtain a digital signal corresponding to the target current. It should be noted that the first compensation module 1002 can obtain compensation parameters via the SPI interface to achieve signal compensation. The compensation processing performed by the first compensation module 1002 can effectively improve the accuracy of the digital signal corresponding to the target current.

[0050] Optionally, in the current detection circuit provided in the embodiment of the present application, the digital correction module 101 includes: a digital corrector 1010, connected to the analog-to-digital conversion module 100, for correcting the digital signal corresponding to the target current to obtain a corrected digital signal; a digital signal processor 1011, connected to the digital corrector 1010, for performing average value processing on the corrected digital signal to obtain a target current digital quantity; a second compensation module 1012, connected to the digital corrector 1010 and the digital signal processor 1011, for performing compensation processing when the digital corrector 1010 corrects the digital signal corresponding to the target current to obtain a corrected digital signal, and for performing compensation processing when the digital signal processor 1011 performs average value processing on the corrected digital signal to obtain a target current digital quantity.

[0051] In an optional embodiment, if Figure 5As shown, the digital correction module 101 is composed of a digital corrector 1010, a digital signal processor 1011, and a second compensation module 1012. The digital corrector 1010 is connected to the analog-to-digital conversion module 100, the digital signal processor 1011 is connected to the digital corrector 1010, and the second compensation module 1012 is connected to the digital corrector 1010 and the digital signal processor 1011. The digital corrector 1010 corrects the digital signal corresponding to the target current to obtain a corrected digital signal, and then the digital signal processor 1011 performs average processing on the corrected digital signal to obtain the target current digital quantity. It should be noted that in order to improve the accuracy of the current digital quantity, the second compensation module 1012 performs compensation processing when the digital corrector 1010 corrects the digital signal corresponding to the target current and when the digital signal processor 1011 performs average processing on the corrected digital signal. The digital corrector 1010, the digital signal processor 1011, and the second compensation module 1012 can more accurately obtain the above-mentioned target current digital quantity.

[0052] Optionally, in the current detection circuit provided in the embodiment of the present application, the logic processing module 20 further includes: an electronic buffer 200, for receiving a control signal to drive the comparator module 201 to operate; the comparator module 201, for outputting a target signal to the high-side driver module 30 based on a comparison detection result between a preset threshold and a target current digital value.

[0053] In an optional embodiment, if Figure 6 As shown, the logic processing module 20 is composed of an electronic buffer 200 and a comparator module 201. The electronic buffer 200 is connected to the comparator module 201 and receives a control signal through the electronic buffer 200 to drive the comparator module 201. After receiving the drive signal, the comparator module 201 outputs a target signal to the high-side driver module 30 based on the comparison detection result between the preset threshold and the target current digital value.

[0054] Optionally, in the current detection circuit provided in an embodiment of the present application, the comparator module 201 includes: a serial peripheral interface 2010, for receiving a target current digital quantity and writing the target current digital quantity into a register 2011; a register 2011, for storing the target current digital quantity; and a comparator 2012, for outputting a target signal to the high-side driver module 30 based on a comparison detection result between a preset threshold and the target current digital quantity.

[0055] In an optional embodiment, if Figure 7As shown, the comparator module 201 is composed of a serial peripheral interface 2010, a register 2011, and a comparator 2012. The target current digital value is received through the serial peripheral interface 2010 and written into the register 2011. The comparator 2012 outputs a target signal to the high-side driver module 30 based on the comparison detection result between the preset threshold and the target current digital value. That is, the comparator 2012 performs a threshold judgment and outputs the target signal to the high-side driver module. For example, when the battery cell current value reaches the configured threshold, the CMD logic control signal of the high-side driver module is triggered to execute a shutdown action, thereby cutting off the external power supply for protection.

[0056] It should be noted that the high-side driver module 30 may be composed of a field effect transistor. The external power supply is cut off by the high-side driver module 30.

[0057] Optionally, in the current detection circuit provided in the embodiment of the present application, the current detection circuit also includes: a boost circuit 40, which is connected to the high-side driver module 30 and the logic processing module 20, wherein a clock signal is provided to the boost circuit 40 through the logic processing module 20, so that the boost circuit 40 outputs a preset voltage value to the high-side driver module 30, so as to drive the high-side driver module 30 to operate based on the preset voltage value.

[0058] In an optional embodiment, in order to realize the above-mentioned high-side driving function, a boost circuit needs to be provided in the current detection circuit provided in the embodiment of the present application. Figure 8 As shown, the current detection circuit is further provided with a boost circuit 40, wherein the boost circuit 40 is connected to the high-side driver module 30 and the logic processing module 20. The logic processing module 20 provides a clock signal to the boost circuit 40, so that the boost circuit 40 outputs a preset voltage value to the high-side driver module 30, thereby driving the high-side driver module 30 to operate based on the preset voltage value. It should be noted that the boost circuit 40 can be a charge pump boost circuit. The boost circuit drives the high-side driver module 30 to perform a shutdown action, thereby cutting off the external power supply for protection.

[0059] In an optional embodiment, the boost circuit 40 may be a DC boost circuit. The DC boost circuit operates by utilizing the energy storage and release characteristics of inductors and capacitors to regulate the output voltage by controlling the switching frequency and duty cycle of the switching element. When the switching element is on, the inductor stores energy; when the switching element is off, the energy stored in the inductor is released to the load via the diode and capacitor, thereby achieving a voltage boost. A controller adjusts the duty cycle of the switching element based on the output voltage feedback signal to maintain a stable output voltage. The DC boost circuit can provide a stable drive voltage for the high-side driver module 30.

[0060] In an optional embodiment, the quantitative reliability analysis method for the current detection circuit is implemented as follows:

[0061] (1) Based on the IEC 62380 standard, the overall failure rate of the BMS integrated chip is calculated, and the failure rates of the relevant modules of the current detection circuit are decomposed. See Table 1 for details;

[0062] (2) Through DFMEA analysis, a reliability safety measure mechanism is formulated for the failure of the current detection circuit, such as: SM_01 analog signal self-test comparison, SM_02 CRC check of calibration parameter download, SM_03 independent CRC generator and detection circuit, SM_04 analog multi-channel acquisition switch to digital-to-analog conversion decoding threshold self-test, SM_05 full temperature redundant ADC circuit can request conversion cross-check fault injection, SM_06 fault injection self-test, SM_07 full redundant temperature ADC circuit conversion cross-check, SM_08 charge pump voltage monitoring, SM_09 power supply over-voltage and under-voltage diagnosis, SM_10 analog self-test, SM_11 drive comparison self-test, SM_12 background download calibration data CRC check. The relevant diagnostic coverage is defined with reference to ISO 26262, as shown in Table 1 for details.

[0063] (3) A quantitative FMEDA analysis of the current detection circuit was conducted with reference to the ISO 26262 standard, focusing on the internal components of the current detection circuit integrated chip. The failure rate of the components in (1) was diagnosed by applying the measures in (2), resulting in a residual or single-point failure rate of 0.242702 FIT and a potential multi-point failure rate of 0.17688826 FIT. The analysis process is shown in Table 1.

[0064] Table 1

[0065]

[0066]

[0067]

[0068] The current detection circuit provided by the embodiment of the present application is used to convert the analog signal corresponding to the target current of the target battery cell into a target current digital value through a current conversion module; the logic processing module is connected to the current conversion module and is used to output the target signal to the high-side driver module based on the comparison detection result between the preset threshold and the target current digital value; the high-side driver module is connected to the logic processing module and is used to determine whether to cut off the external power supply based on the target signal, which solves the problem that the reliability of the battery cell current detection diagnosis protection is poor due to the different IC functional circuits used in the related art. In this solution, the analog signal corresponding to the current of the target battery cell is converted into a target current digital value through the current conversion module, and then the logic processing module outputs the target signal to the high-side driver module based on the comparison detection result between the preset threshold and the target current digital value. Finally, the high-side driver module determines whether to cut off the external power supply based on the target signal. The battery cell current detection diagnosis protection is realized by the integration of the current conversion module, the logic processing module and the high-side driver module, thereby achieving the effect of improving the reliability of the battery cell current detection diagnosis protection.

[0069] The above are merely embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application should all be included within the scope of the claims of the present application.

Claims

1. A current detection circuit, characterized in that: include: A current conversion module (10) is used to convert an analog signal corresponding to a target current of a target battery cell into a digital value of the target current; a logic processing module (20), connected to the current conversion module (10), and configured to output a target signal to a high-side driver module (30) based on a comparison detection result between a preset threshold value and the target current digital value; The high-side driving module (30) is connected to the logic processing module (20) and is used to determine whether to cut off external power supply based on the target signal.

2. The current detection circuit according to claim 1, wherein: The current conversion module (10) comprises: an analog-to-digital conversion module (100), connected to the digital correction module (101), and configured to convert an analog signal corresponding to a target current of a target battery cell into a digital signal corresponding to the target current; The digital correction module (101) is used to process the digital signal corresponding to the target current to obtain the digital value of the target current.

3. The current detection circuit according to claim 2, characterized in that: The current conversion module (10) further includes: The analog filter (102) is connected to the analog-to-digital conversion module (100) and is used to filter the received initial analog signal corresponding to the target current to obtain the analog signal corresponding to the target current.

4. The current detection circuit according to claim 2, wherein: The analog-to-digital conversion module (100) comprises: A carrier suppression analog modulator (1000) is used to modulate the analog signal corresponding to the target current to obtain a modulated signal; A digital filter (1001) is connected to the carrier suppression analog modulator (1000) and is used to filter the modulated signal to obtain a digital signal corresponding to the target current.

5. The current detection circuit according to claim 4, characterized in that: The analog-to-digital conversion module (100) comprises: The first compensation module (1002) is connected to the digital filter (1001) and is used to perform compensation processing when the digital filter (1001) performs filtering processing on the modulated signal, so as to obtain a digital signal corresponding to the target current.

6. The current detection circuit according to claim 2, wherein: The digital correction module (101) comprises: a digital corrector (1010), connected to the analog-to-digital conversion module (100), and configured to correct the digital signal corresponding to the target current to obtain a corrected digital signal; A digital signal processor (1011), connected to the digital corrector (1010), is configured to perform average processing on the corrected digital signal to obtain the target current digital value; A second compensation module (1012) is connected to the digital corrector (1010) and the digital signal processor (1011), and is used to perform compensation processing when the digital corrector (1010) corrects the digital signal corresponding to the target current to obtain the corrected digital signal, and is used to perform compensation processing when the digital signal processor (1011) performs average value processing on the corrected digital signal to obtain the target current digital value.

7. The current detection circuit according to claim 1, wherein: The logic processing module (20) further includes: An electronic buffer (200) is used to receive a control signal to drive the comparator module (201) to operate; The comparator module (201) is used to output a target signal to the high-side driver module (30) based on a comparison detection result between a preset threshold and the target current digital value.

8. The current detection circuit according to claim 7, characterized in that: The comparator module (201) comprises: A serial peripheral interface (2010) is configured to receive the target current digital value and write the target current digital value into a register (2011); The register (2011) is used to store the target current digital value; The comparator (2012) is used for outputting a target signal to the high-side driver module (30) based on a comparison detection result between a preset threshold value and the target current digital value.

9. The current detection circuit according to any one of claims 1 to 8, characterized in that: The current detection circuit further includes: A boost circuit (40) is connected to the high-side driver module (30) and the logic processing module (20), wherein the logic processing module (20) provides a clock signal to the boost circuit (40), so that the boost circuit (40) outputs a preset voltage value to the high-side driver module (30), so as to drive the high-side driver module (30) to operate based on the preset voltage value.

10. The current detection circuit according to claim 9, characterized in that: The boost circuit (40) is a DC boost circuit.

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