CN219533350U - Storage battery current detection circuit - Google Patents
Storage battery current detection circuit Download PDFInfo
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- CN219533350U CN219533350U CN202320267876.7U CN202320267876U CN219533350U CN 219533350 U CN219533350 U CN 219533350U CN 202320267876 U CN202320267876 U CN 202320267876U CN 219533350 U CN219533350 U CN 219533350U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The utility model discloses a storage battery current detection circuit, which relates to the technical field of storage battery current and comprises an intelligent control module, a signal receiving module and a control module, wherein the intelligent control module is used for receiving signals and controlling the modules; the charge-discharge control module is used for controlling the charge and discharge of the storage battery circuit; the current detection module is used for detecting the charging current and the discharging current of the storage battery circuit; the first gating control module is used for transmitting the channel and transmitting the detection signal to the signal conditioning module for amplification and anti-interference processing; and the second gating control module is used for transmitting the processed signals to the intelligent control module. The storage battery current detection circuit provided by the utility model has the advantages that the current detection module detects the discharging current output by the charging and discharging control module and the charging current input into the charging and discharging control module, the intelligent control module selects the channel transmitted by the first gating control module, so that the signal conditioning module can respectively process the discharging current signal and the charging current signal, and the second gating control module transmits the processed signals.
Description
Technical Field
The utility model relates to the technical field of storage battery current, in particular to a storage battery current detection circuit.
Background
The Storage Battery (Storage Battery) is a device for directly converting chemical energy into electric energy, and provides required direct current electric energy for required electric equipment, most of existing Storage batteries adopt a bidirectional charge-discharge circuit and are controlled by a micro control chip, so that charge-discharge work of the Storage batteries is met, in order to detect current conditions of the Storage batteries in real time, most of existing Storage Battery current detection circuits adopt current sampling resistors to complete detection of charge current and discharge current of the Storage batteries, in order to ensure accuracy of detection signals, relevant operation amplifying circuits are adopted for signal conditioning, but because of bidirectionality of charge and discharge, independent charge current detection circuits and discharge current detection circuits are required for current detection respectively, and circuit structure is complex, so that improvement is required.
Disclosure of Invention
The embodiment of the utility model provides a storage battery current detection circuit to solve the problems in the background technology.
According to an embodiment of the present utility model, there is provided a battery current detection circuit including: the system comprises a power supply module, an intelligent control module, a charge-discharge control module, a current detection module, a first gating control module, a signal conditioning module and a second gating control module;
the power supply module is used for carrying out voltage reduction, rectification filtering and voltage stabilization treatment on the input alternating current electric energy;
the intelligent control module is used for outputting a charging signal and a discharging signal, controlling the work of the charging and discharging control module and receiving the signal output by the second gating control module;
the charging and discharging control module is connected with the power supply module and the intelligent control module and used for controlling the work of the charging and discharging control circuit through a charging signal and a discharging signal and controlling the charging and discharging of the storage battery circuit through the charging and discharging control circuit;
the current detection module is connected with the charge-discharge control module and is used for detecting the current input into the storage battery circuit and outputting a charge current signal, and detecting the current output by the storage battery circuit and outputting a discharge current signal;
the first gating control module is connected with the current detection module and the intelligent control module, and is used for rectifying and filtering the charging signal and the discharging signal and outputting a first control signal, and controlling a first gating circuit to selectively transmit the charging current signal and the discharging current signal through the first control signal;
the signal conditioning module is connected with the first gating control module and is used for amplifying and anti-interference processing the charging current signal and the discharging current signal transmitted by the first gating control module through the dual-operation discharging circuit and respectively outputting a first current signal and a second current signal;
the second gating control module is connected with the intelligent control module and the signal conditioning module, and is used for rectifying and filtering the charging signal and the discharging signal and outputting a second control signal, and controlling the second gating circuit to selectively transmit the first current signal and the second current signal to the intelligent control module through the second control signal.
Compared with the prior art, the utility model has the beneficial effects that: the storage battery current detection circuit provided by the utility model is characterized in that the current detection module is used for detecting the discharge current output by the charge-discharge control module and the charge current input into the charge-discharge control module, and the intelligent control module is used for selecting a channel transmitted by the first gating control module, so that the signal conditioning module can respectively process the input discharge current signal and the charge current signal, the detection precision of the charge-discharge current and the anti-interference capability of the signal are improved, and the processed signal is transmitted to the intelligent control module by the second gating control module, thereby realizing bidirectional detection of the storage battery current, and the circuit structure is simple and easy to implement.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the description of the embodiments of the present utility model will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic block diagram of a battery current detection circuit according to an embodiment of the present utility model.
Fig. 2 is a circuit diagram of a battery current detection circuit according to an embodiment of the present utility model.
Fig. 3 is a circuit diagram of a connection of a second gating control module according to an embodiment of the present utility model.
Description of the embodiments
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Embodiment 1 referring to fig. 1, a battery current detection circuit includes: the system comprises a power supply module 1, an intelligent control module 2, a charge-discharge control module 3, a current detection module 4, a first gating control module 5, a signal conditioning module 6 and a second gating control module 7;
specifically, the power module 1 is configured to perform voltage reduction, rectification filtering and voltage stabilization processing on input ac power;
the intelligent control module 2 is used for outputting a charging signal and a discharging signal and controlling the work of the charging and discharging control module 3 and receiving a signal output by the second gating control module 7;
the charge-discharge control module 3 is connected with the power supply module 1 and the intelligent control module 2, and is used for controlling the work of the charge-discharge control circuit through a charge signal and a discharge signal and controlling the charge and discharge of the storage battery circuit through the charge-discharge control circuit;
the current detection module 4 is connected with the charge-discharge control module 3 and is used for detecting the current input into the storage battery circuit and outputting a charge current signal, and is used for detecting the current output by the storage battery circuit and outputting a discharge current signal;
the first gating control module 5 is connected with the current detection module 4 and the intelligent control module 2, and is used for rectifying and filtering the charging signal and the discharging signal and outputting a first control signal, and controlling a first gating circuit to selectively transmit the charging current signal and the discharging current signal through the first control signal;
the signal conditioning module 6 is connected with the first gating control module 5, and is used for amplifying and anti-interference processing the charging current signal and the discharging current signal transmitted by the first gating control module 5 through the dual-operation discharging circuit and respectively outputting a first current signal and a second current signal;
and the second gating control module 7 is connected with the intelligent control module 2 and the signal conditioning module 6, and is used for rectifying and filtering the charging signal and the discharging signal and outputting a second control signal, and controlling a second gating circuit to selectively transmit the first current signal and the second current signal to the intelligent control module 2 through the second control signal.
In a specific embodiment, the power module 1 may employ a voltage reduction circuit, a rectifying and filtering circuit and a voltage stabilizing circuit, where the voltage of the electric energy input by the ac power supply is reduced, rectified and filtered, and the voltage is stabilized, and the dc electric energy is output; the intelligent control module 2 can adopt, but is not limited to, a singlechip, a DSP and other components integrated with an arithmetic unit, a controller, a memory, an input/output device and other components, and a microcontroller for realizing the functions of signal processing, data storage, module control, timing control and the like, and controls the transmission of charge and discharge electric energy by regulating the output pulse signals; the charge-discharge control module 3 can adopt a charge-discharge control circuit and a storage battery circuit, and the charge-discharge control circuit performs bidirectional electric energy transmission control and performs charge-discharge control for the storage battery circuit; the current detection module 4 may use a sampling resistor to detect a current signal flowing through the current detection module; the first gating control module 5 may employ a rectifying and filtering circuit and an analog switching circuit, where the rectifying and filtering circuit processes an input signal and controls a transmission path of a selection signal of the analog switching circuit; the signal conditioning module 6 can adopt a double-operation-circuit to amplify and anti-interference process the input signal; the second gating control module 7 may employ a rectifying and filtering circuit and an analog switching circuit, where the rectifying and filtering circuit processes an input signal and controls the analog switching circuit to select a connection path with the intelligent control module 2.
Embodiment 2, referring to fig. 2 and 3, based on embodiment 1, the power module 1 includes an ac power source, a first transformer W1, a first rectifier T1, a first capacitor C1, and a first voltage regulator VD1;
specifically, the ac power supply is connected to the first end and the third end of the first transformer W1, the fourth end of the first rectifier T1 is grounded, the second end of the first rectifier T1 is connected to one end of the first capacitor C1 and the cathode of the first voltage stabilizing tube VD1, and the anode of the first voltage stabilizing tube VD1 and the other end of the first capacitor C1 are grounded.
Further, the charge-discharge control module 3 includes a first power tube Q1, a second power tube Q2, a battery device and a load device RL; the intelligent control module 2 comprises a first controller U1; the current detection module 4 comprises a first resistor R1;
specifically, the source electrode of the first power tube Q1 is connected to the first end and the ground end of the load device RL, the drain electrode of the first power tube Q1 is connected to the drain electrode of the second power tube Q2, the source electrode of the second power tube Q2 is connected to the first end of the first resistor R1, the second end of the first resistor R1 is connected to the second end of the load device RL and the cathode of the first voltage stabilizing tube VD1 through the battery device, and the first IO end and the second IO end of the first controller U1 are respectively connected to the gate electrode of the first power tube Q1 and the gate electrode of the second power tube Q2.
In a specific embodiment, the first power tube Q1 and the second power tube Q2 may be N-channel enhancement type MOS tubes, where the first power tube Q1 is used for discharge control, and the second power tube Q2 is used for charge control; the first controller U1 may be, but not limited to, an STM32 single-chip microcomputer and an ST879C52 single-chip microcomputer, where the first IO terminal and the second IO terminal of the first controller U1 output pulse signals respectively.
Further, the first gating control module 5 includes a second resistor R2, a third resistor R3, a second capacitor C2, a third capacitor C3, a first diode D1, a second diode D2, and a first analog switch U2;
specifically, one end of the second resistor R2 and one end of the third resistor R3 are respectively connected to the second IO end and the first IO end of the first controller U1, the other end of the second resistor R2 is connected to the anode of the first diode D1 and is grounded through the third capacitor C3, the other end of the third resistor R3 is connected to the anode of the second diode D2 and is grounded through the second capacitor C2, the cathode of the first diode D1 is connected to the sixth end and the twelfth end of the first analog switch U2, the cathode of the second diode D2 is connected to the fifth end and the thirteenth end of the first analog switch U2, the first end and the eighth end of the first analog switch U2 are both connected to the first end of the first resistor R1, the third end and the tenth end of the first analog switch U2 are both connected to the second end of the first resistor R1, and the second end, the tenth end, the ninth end and the ninth end of the first analog switch U2 are connected to the signal conditioning module 6.
In a specific embodiment, the second resistor R2 and the third capacitor C3 form an RC filter circuit, and the first diode D1 is used for rectifying and processing an input pulse signal; the composition principle of the third resistor R3, the second capacitor C2 and the second diode D2 is the same as the composition principle of the second resistor R2, the third capacitor C3 and the first diode D1; the first analog switch U2 may be a CD4066 chip, which controls the signal transmission path.
Further, the signal conditioning module 6 includes a first power supply VCC1, a fourth resistor R4, a fifth resistor R5, a sixth resistor R6, a seventh resistor R7, a first operational amplifier OP1, and a second operational amplifier OP2;
specifically, the first power VCC1 is connected to the inverting terminal of the first OP1 and one end of the fifth resistor R5 through the fourth resistor R4, the other end of the fifth resistor R5 is connected to the output terminal of the first OP1 and connected to the inverting terminal of the second OP2 and one end of the seventh resistor R7 through the sixth resistor R6, the other end of the seventh resistor R7 is connected to the output terminal of the second OP2 and the second gating control module 7, the in-phase terminal of the second OP2 is connected to the second end and the tenth end of the first analog switch U2, and the in-phase terminal of the first OP1 is connected to the fourth end and the ninth end of the first analog switch U2.
In a specific embodiment, the first OP1 and the second OP2 may be HCP6H02 chips, so as to avoid resistive loading effect and unbalanced input impedance.
Further, the second gating control module 7 includes an eighth resistor R8, a ninth resistor R9, a fourth capacitor C4, a fifth capacitor C5, a third diode D3, a fourth diode D4, and a second analog switch U3;
specifically, one end of the eighth resistor R8 and one end of the ninth resistor R9 are respectively connected to the first IO end and the second IO end of the first controller U1, the other end of the eighth resistor R8 is connected to the anode of the third voltage stabilizing tube and grounded through the fifth capacitor C5, the other end of the ninth resistor R9 is connected to the anode of the fourth diode D4 and grounded through the fourth capacitor C4, the cathode of the third diode D3 and the cathode of the fourth diode D4 are respectively connected to the sixth end and the fifth end of the second analog switch U3, the third end and the eighth end of the second analog switch U3 are both connected to the output end of the second operational amplifier OP2, and the fourth end and the ninth end of the second analog switch U3 are respectively connected to the third IO end and the fourth IO end of the first controller U1.
In a specific embodiment, the principles of the eighth resistor R8, the fifth capacitor C5, and the third diode D3 and the ninth resistor R9, the fourth capacitor C4, and the fourth diode D4 are the same as the principles of the second resistor R2, the third capacitor C3, and the first diode D1; the second analog switch U3 may be a CD4066 chip.
According to the storage battery current detection circuit, the first transformer W1, the first rectifier T1, the first capacitor C1 and the first voltage stabilizing tube VD1 are used for carrying out voltage reduction, rectification filtering and voltage stabilizing treatment on input electric energy, the first power tube Q1 and the second power tube Q2 are controlled to be in a conducting state through the first controller U1, discharging and charging control on a storage battery device are achieved, when discharging is carried out, the first controller U1 is used for controlling the first end and the second end of the first analog switch U2 to be conducted, the third end and the fourth end of the first analog switch U2 to be conducted, the eighth end and the ninth end of the second analog switch U3 are controlled to be conducted, the first end of the first resistor R1 is connected with the same-phase end of the second operational amplifier OP2, the output end of the second operational amplifier OP1 and the second operational amplifier OP2 are connected with the third IO end of the first controller U1, the third end of the second operational amplifier OP2 is connected with the third IO end of the first controller U1, the second end of the second operational amplifier OP2 is connected with the same-phase end of the first analog switch U2, and the second end of the second operational amplifier OP2 is connected with the first end of the second IO 2, and the second end of the second analog switch is conducted, and the second end of the second input circuit is connected with the second input end of the second output end of the second operational amplifier OP2, and the second output end is connected with the second input current signal and the second output end is connected with the second output.
It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (6)
1. A storage battery current detection circuit is characterized in that,
the battery current detection circuit includes: the system comprises a power supply module, an intelligent control module, a charge-discharge control module, a current detection module, a first gating control module, a signal conditioning module and a second gating control module;
the power supply module is used for carrying out voltage reduction, rectification filtering and voltage stabilization treatment on the input alternating current electric energy;
the intelligent control module is used for outputting a charging signal and a discharging signal, controlling the work of the charging and discharging control module and receiving the signal output by the second gating control module;
the charging and discharging control module is connected with the power supply module and the intelligent control module and used for controlling the work of the charging and discharging control circuit through a charging signal and a discharging signal and controlling the charging and discharging of the storage battery circuit through the charging and discharging control circuit;
the current detection module is connected with the charge-discharge control module and is used for detecting the current input into the storage battery circuit and outputting a charge current signal, and detecting the current output by the storage battery circuit and outputting a discharge current signal;
the first gating control module is connected with the current detection module and the intelligent control module, and is used for rectifying and filtering the charging signal and the discharging signal and outputting a first control signal, and controlling a first gating circuit to selectively transmit the charging current signal and the discharging current signal through the first control signal;
the signal conditioning module is connected with the first gating control module and is used for amplifying and anti-interference processing the charging current signal and the discharging current signal transmitted by the first gating control module through the dual-operation discharging circuit and respectively outputting a first current signal and a second current signal;
the second gating control module is connected with the intelligent control module and the signal conditioning module, and is used for rectifying and filtering the charging signal and the discharging signal and outputting a second control signal, and controlling the second gating circuit to selectively transmit the first current signal and the second current signal to the intelligent control module through the second control signal.
2. The battery current detection circuit of claim 1, wherein the power module comprises an ac power source, a first transformer, a first rectifier, a first capacitor, a first regulator;
the alternating current power supply is connected with the first end and the third end of the first transformer, the fourth end of the first rectifier is grounded, the second end of the first rectifier is connected with one end of the first capacitor and the cathode of the first voltage stabilizing tube, and the anode of the first voltage stabilizing tube and the other end of the first capacitor are grounded.
3. The battery current detection circuit of claim 2, wherein the charge-discharge control module comprises a first power tube, a second power tube, a battery device, and a load device; the intelligent control module comprises a first controller; the current detection module comprises a first resistor;
the source electrode of the first power tube is connected with the first end and the ground end of the load device, the drain electrode of the first power tube is connected with the drain electrode of the second power tube, the source electrode of the second power tube is connected with the first end of the first resistor, the second end of the first resistor is connected with the second end of the load device and the cathode of the first voltage stabilizing tube through the storage battery device, and the first IO end and the second IO end of the first controller are respectively connected with the grid electrode of the first power tube and the grid electrode of the second power tube.
4. The battery current detection circuit of claim 3 wherein the first gating control module comprises a second resistor, a third resistor, a second capacitor, a third capacitor, a first diode, a second diode, a first analog switch;
one end of the second resistor and one end of the third resistor are respectively connected with the second IO end and the first IO end of the first controller, the other end of the second resistor is connected with the anode of the first diode and grounded through the third capacitor, the other end of the third resistor is connected with the anode of the second diode and grounded through the second capacitor, the cathode of the first diode is connected with the sixth end and the twelfth end of the first analog switch, the cathode of the second diode is connected with the fifth end and the thirteenth end of the first analog switch, the first end and the eighth end of the first analog switch are both connected with the first end of the first resistor, the third end and the tenth end of the first analog switch are both connected with the second end of the first resistor, and the second end, the tenth end, the ninth end and the fourth end of the first analog switch are connected with the signal conditioning module.
5. The battery current detection circuit of claim 4, wherein the signal conditioning module comprises a first power supply, a fourth resistor, a fifth resistor, a sixth resistor, a seventh resistor, a first op-amp, a second op-amp;
the first power supply is connected with the inverting terminal of the first operational amplifier and one end of a fifth resistor through a fourth resistor, the other end of the fifth resistor is connected with the output terminal of the first operational amplifier and one end of a seventh resistor through a sixth resistor, the other end of the seventh resistor is connected with the output terminal of the second operational amplifier and the second gating control module, the in-phase terminal of the second operational amplifier is connected with the second end and the tenth end of the first analog switch, and the in-phase terminal of the first operational amplifier is connected with the fourth end and the ninth end of the first analog switch.
6. The battery current detection circuit of claim 5, wherein the second gating control module comprises an eighth resistor, a ninth resistor, a fourth capacitor, a fifth capacitor, a third diode, a fourth diode, and a second analog switch;
one end of the eighth resistor and one end of the ninth resistor are respectively connected with the first IO end and the second IO end of the first controller, the other end of the eighth resistor is connected with the anode of the third voltage stabilizing tube and grounded through the fifth capacitor, the other end of the ninth resistor is connected with the anode of the fourth diode and grounded through the fourth capacitor, the cathode of the third diode and the cathode of the fourth diode are respectively connected with the sixth end and the fifth end of the second analog switch, the third end and the eighth end of the second analog switch are both connected with the output end of the second operational amplifier, and the fourth end and the ninth end of the second analog switch are respectively connected with the third IO end and the fourth IO end of the first controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320267876.7U CN219533350U (en) | 2023-02-21 | 2023-02-21 | Storage battery current detection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320267876.7U CN219533350U (en) | 2023-02-21 | 2023-02-21 | Storage battery current detection circuit |
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| Publication Number | Publication Date |
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| CN219533350U true CN219533350U (en) | 2023-08-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202320267876.7U Active CN219533350U (en) | 2023-02-21 | 2023-02-21 | Storage battery current detection circuit |
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| CN (1) | CN219533350U (en) |
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- 2023-02-21 CN CN202320267876.7U patent/CN219533350U/en active Active
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