CN219737623U - High-side current acquisition module, device and vehicle - Google Patents
High-side current acquisition module, device and vehicle Download PDFInfo
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- CN219737623U CN219737623U CN202321000169.8U CN202321000169U CN219737623U CN 219737623 U CN219737623 U CN 219737623U CN 202321000169 U CN202321000169 U CN 202321000169U CN 219737623 U CN219737623 U CN 219737623U
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Abstract
The utility model provides a high-side current acquisition module, a high-side current acquisition device and a vehicle, and belongs to the technical field of electronics. The first end of the high-side current acquisition circuit is electrically connected with the power supply path switching circuit, the second end of the high-side current acquisition circuit is electrically connected with the power supply path switching circuit, the power supply path switching circuit is used for controlling the on-off of a plurality of power supply paths, different voltages can be output to the high-side current acquisition circuit by the power supply path switching circuit, and the high-side current acquisition circuit acquires current at a load after receiving the voltage output by the power supply path switching circuit so as to obtain acquisition signals. Therefore, different voltages can be output to the load through the discrete device and different power supplies, other components are not required to be additionally added, the complexity of a circuit is reduced, and meanwhile, the collection precision of high-side current is improved.
Description
Technical Field
The utility model belongs to the technical field of electronics, and particularly relates to a high-side current acquisition module, a high-side current acquisition device and a vehicle.
Background
At present, in a traditional current acquisition system, the diversity of each part is not high, the circuit has great complexity, in the prior art, load current is generally acquired through a simple resistor, and in addition, the complexity of the circuit is generally increased by additionally adding an operational amplifier and related boosting equipment to enhance the acquired signal intensity. Therefore, how to improve the current collection accuracy while reducing the circuit complexity is a problem to be solved.
Disclosure of Invention
The embodiment of the utility model provides a high-side current acquisition module which can reduce the cost of devices on the premise of realizing a high-side current sampling function.
A first aspect of an embodiment of the present utility model provides a high-side current collection module, including:
the power supply path switching circuit comprises a plurality of power supply paths, and is used for controlling the on-off of each power supply path, and the voltages output by the power supply paths are different;
the first end of the high-side current acquisition circuit is electrically connected with the power supply path switching circuit;
the first end of the load is electrically connected with the second end of the high-side current acquisition circuit, and the second end of the load is grounded;
the high-side current acquisition circuit is used for acquiring current at the load under the condition of receiving voltage output by the power supply path switching circuit to obtain an acquisition signal.
In one embodiment, the power path switching circuit includes:
the first power supply path comprises a first power supply, a voltage boosting circuit and a first resistor, wherein the first end of the voltage boosting circuit is electrically connected with the first power supply, the second end of the voltage boosting circuit is electrically connected with the first end of the first resistor, the second end of the first resistor is electrically connected with the high-side acquisition circuit, the voltage boosting circuit is used for improving the voltage applied by the first power supply to the first resistor, and the first power supply path is used for outputting a first voltage to the high-side current acquisition circuit when the first power supply path is conducted and the second power supply path and the third power supply path are disconnected;
the second power supply path comprises a second power supply and a second resistor, the first end of the second resistor is electrically connected with the second power supply, the second end of the second resistor is electrically connected with the high-side acquisition circuit, and the second power supply path is used for outputting a second voltage to the high-side current acquisition circuit under the condition that the second power supply path is conducted and the first power supply path and the third power supply path are disconnected;
the third power supply path comprises a third power supply and a third resistor, the first end of the third resistor is electrically connected with the third power supply, the second end of the third resistor is electrically connected with the high-side acquisition circuit, and the third power supply path is used for outputting a third voltage to the high-side current acquisition circuit under the condition that the third power supply path is conducted and the first power supply path and the second power supply path are disconnected;
the voltages corresponding to the first power supply, the second power supply and the third power supply are different.
In one embodiment, the boost circuit includes: the first diode, the first capacitor, the second capacitor, the fourth resistor and the chip;
the input end of the first diode is used as a power input end of the boost circuit and is connected with a battery power supply end; the output end of the first diode is connected with the first port of the chip, the first end of the first capacitor is connected with the output end of the first diode, and the second end of the first capacitor is grounded;
the first end of the fourth resistor is electrically connected with the enabling signal output end, the second end of the fourth resistor is connected with the second port of the chip, and the first end of the second capacitor is connected with the second end of the fourth resistor; the second end of the second capacitor is grounded, and the third port of the chip is grounded.
In one embodiment, the boost circuit further comprises: the second diode, the third capacitor, the fourth capacitor, the fifth capacitor and the inductor;
the output end of the second diode is used as the output end of the boost circuit, is connected with the first end of the first resistor, the output end of the third diode is connected with the input end of the second diode, the first end of the third capacitor is connected with the first end of the inductor, the second end of the third capacitor is connected with the input end of the second diode and the output end of the third diode, the first end of the fourth capacitor is connected with the output end of the second diode, and the second end of the fourth capacitor is grounded; the first end of the fifth capacitor is connected with the input end of the third diode and the internal power supply of the boost circuit, the second end of the fifth capacitor is grounded, the second end of the inductor is connected with the input end of the third diode, and the first end of the inductor is connected with the fourth port of the chip.
In one embodiment, the high-side current acquisition circuit includes:
the operational amplification circuit is electrically connected with the power supply path switching circuit and is used for receiving the voltage output by the power supply path switching circuit and outputting a signal to be acquired by the operational amplifier;
the load current acquisition circuit is electrically connected with the operational amplifier circuit and is used for receiving the signal to be acquired by the operational amplifier and acquiring the current at the load to obtain an acquisition signal;
and the stabilizing circuit is electrically connected with the operational amplification circuit and the load current acquisition circuit and is used for ensuring that the acquisition signal is stabilized at a preset value.
In one embodiment, the operational amplifier circuit includes; the operational amplifier, the sixth capacitor, the fifth resistor and the load;
the power supply end of the operational amplifier and the first end of the sixth capacitor are used as voltage input ends of the operational amplifier circuit and are electrically connected with the power supply path switching circuit to receive the voltage output by the power supply path switching circuit, and the grounding end of the operational amplifier and the second end of the sixth capacitor are grounded;
the first end of the fifth resistor is connected with the positive input end of the operational amplifier, the first end of the load is connected with the second end of the fifth resistor, and the second end of the load is grounded.
In one embodiment, the load current acquisition circuit comprises; a sixth resistor, a seventh resistor, an eighth resistor;
the first end of the sixth resistor is electrically connected with the reverse input end of the operational amplifier and the stabilizing circuit, and the first end of the seventh resistor is connected with the second end of the sixth resistor and a fourth battery power supply;
the first end of the eighth resistor is electrically connected with the stabilizing circuit, and the second end of the eighth resistor is grounded.
In one embodiment, the stabilizing circuit comprises a ninth resistor and a triode;
the first end of the ninth resistor is connected with the output end of the operational amplifier, the base electrode of the triode is connected with the second end of the ninth resistor, the emitter of the triode is connected with the second end of the sixth resistor and the reverse input end of the operational amplifier, and the collector of the triode is connected with the first end of the eighth resistor and the output end of the high-side current acquisition circuit.
A second aspect of the embodiment of the present utility model provides a high-side current collecting device, where the high-side current collecting device includes the high-side current collecting module according to any one of the first aspect of the embodiment of the present utility model.
The technical scheme provided by the embodiment of the utility model at least has the following beneficial effects:
the first end of the high-side current acquisition circuit is electrically connected with the power supply path switching circuit, the second end of the high-side current acquisition circuit is electrically connected with the power supply path switching circuit, the power supply path switching circuit is used for controlling the on-off of a plurality of power supply paths, different voltages can be output to the high-side current acquisition circuit by the power supply path switching circuit, and the high-side current acquisition circuit acquires current at a load after receiving the voltage output by the power supply path switching circuit so as to obtain acquisition signals. Therefore, different voltages can be output to the load through the discrete device and different power supplies, other components are not required to be additionally added, the complexity of a circuit is reduced, and meanwhile, the collection precision of high-side current is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings used in the embodiments or the description of the prior art 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 diagram of a high-side current collection module according to an embodiment of the present utility model;
FIG. 2 is a schematic diagram of another embodiment of a high-side current collection module according to the present utility model;
FIG. 3 is a schematic diagram of another embodiment of a high-side current collection module according to the present utility model;
fig. 4 is a schematic structural diagram of a specific implementation of a high-side current collection module according to an embodiment of the present utility model.
Detailed Description
In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the utility model is further described in detail with reference to the accompanying drawings and embodiments. It should be understood that the detailed description and specific examples, while indicating the utility model, are intended for purposes of illustration only and are not intended to limit the scope of the utility model.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a high-side current collection module according to an embodiment of the utility model.
The power supply path switching circuit 10 includes a plurality of power supply paths, and the power supply path switching circuit is used for controlling on-off of each power supply path, and the voltages output by the power supply paths are different;
a high-side current acquisition circuit 20, wherein a first end of the high-side current acquisition circuit 20 is electrically connected with the power supply path switching circuit 10;
a load 30, wherein a first end of the load 30 is electrically connected with a second end of the high-side current acquisition circuit 20, and a second end of the load 30 is grounded;
the high-side current collection circuit 20 is configured to collect a current at the load 30 under the condition of receiving the voltage output by the power supply path switching circuit 10, so as to obtain a collection signal.
In the embodiment of the utility model, the power supply path switching circuit comprises a plurality of power supply paths, and each power supply path can respectively form different current acquisition paths with the high-side current acquisition circuit and the load. Different power supply paths can output different voltages to the high-side current acquisition circuit after being switched. In one embodiment, when any one of the power supply paths is conducted, the power supply path switching circuit outputs voltage to the high-side current collecting circuit, the high-side current collecting circuit is connected with the load and the power supply path switching circuit to form a current collecting path, the load is connected with the power supply ground, at this time, the high-side current collecting circuit collects current at the load to obtain a collected signal, and the collected current signal is output through the output end of the high-side current collecting circuit.
In the embodiment of the utility model, the power supply path switching circuit can be any device, equipment or circuit structure for realizing the power supply path switching function. The power supply path switching circuit can be a switching element of at least one path of power supply; or at least one path of resistance element connected with the chip, and when the power supply path switching circuit is provided with one path of power supply switching element, the power supply switching element is connected with the high-side circuit acquisition circuit. The number of power supply paths and the type of components selected in the power supply path switching circuit are set in the power supply path switching circuit, and the components are selected optimally according to experimental requirements and experimental effects, and are not limited herein.
In the embodiment of the utility model, the acquisition signals acquired by the high-side current acquisition circuit are different current signals formed by the high-side current acquisition circuit at the load 40-RLOAD according to different voltages output by the power supply path switching circuit, and can be identified by related detection equipment and acquisition equipment after being output by the output end of the high-side current acquisition circuit. The high-side current acquisition circuit may be any device, apparatus or current structure having load current detection. When the power supply path switching circuit 10 is sequentially connected in series with the high-side current collecting circuit 20 and the load 30, the power supply in the power supply path switching circuit 10 applies voltage to the load 30 through a path of path, the high-side current collecting circuit 20 collects the current at the load 30 by using a detection resistor, and the collection signal is output through the output end of the high Bian Dianliu collection module, and the collection signal can be identified and recorded by the corresponding identification device.
Referring to fig. 2, fig. 2 is a schematic structural diagram of another high-side current collection module according to an embodiment of the utility model; the power path switching circuit 10 includes:
a first power supply path 11, wherein the first power supply path 11 includes a first power supply KL30, a boost circuit 40, and a first resistor R1, a first end of the boost circuit 40 is electrically connected to the first power supply KL30, a second end of the boost circuit 40 is electrically connected to a first end of the first resistor R1, a second end of the first resistor R1 is electrically connected to the high-side current collection circuit 20, the boost circuit 40 is configured to increase a voltage applied by the first power supply KL30 to the first resistor R1, and the first power supply path 11 is configured to output a first voltage to the high-side current collection circuit 20 when the first power supply path 11 is turned on, and when the second power supply path 12 and the third power supply path 13 are turned off;
a second power supply path 12, the second power supply path 12 including a second power supply
A first end of the second resistor R2 is electrically connected with the second power supply KL30-CHARGE-PUMP, a second end of the second resistor R2 is electrically connected with the high-side current acquisition circuit 20, and the second power supply path 12 is used for outputting a second voltage to the high-side current acquisition circuit 20 when the second power supply path 12 is on and the first power supply path 11 and the third power supply path 13 are off;
a third power supply path 13, where the third power supply path 13 includes a third power supply KL30-SWITCH and a third resistor R3, a first end of the third resistor R3 is electrically connected to the third power supply KL30-SWITCH, a second end of the third resistor R3 is electrically connected to the high-side current acquisition circuit 20, and the third power supply path 13 is configured to output a third voltage to the high-side current acquisition circuit 20 when the third power supply path 13 is turned on and the first power supply path 11 and the second power supply path 12 are turned off;
the voltages corresponding to the first power supply, the second power supply and the third power supply are different.
In this embodiment, the voltages of the first power supply and the second power supply and the third power supply are different. For example, the first power supply may be another power supply rail, the second power supply may be a charge pump power supply of a pre-drive chip in the system, and the third power supply may be a power supply rail derived from the first power supply.
In the embodiment of the utility model, the boost circuit can be any device, equipment or circuit structure for realizing the boost function. The boosting circuit performs power supply voltage value boosting on at least one original voltage source, and when the voltage rises to a value preset in an experiment, the part of power supply is connected to the circuit; or the booster circuit pulls up the power supply voltage values of the plurality of original voltage sources, and when the sum of the power supply voltage values reaches an experimental preset value, the part of power supply is connected into the circuit.
As shown in fig. 3, in one embodiment, the booster circuit 40 includes: the first diode D1, the first capacitor C1, the second capacitor C2, the fourth resistor R4 and the chip U1;
the input end of the first diode D1 is used as a power input end of the boost circuit 40 and is connected with a battery power supply end; the output end of the first diode D1 is connected with the first port of the chip, the first end of the first capacitor C1 is connected with the output end of the first diode D1, and the second end of the first capacitor C1 is grounded;
the first end of the fourth resistor R4 is electrically connected with the enable signal output end POWER-EN, the second end of the fourth resistor R4 is connected with the second port of the chip, and the first end of the second capacitor C2 is connected with the second end of the fourth resistor R4; the second end of the second capacitor C2 is grounded, and the third end of the chip U1 is grounded.
In this embodiment, the first diode has the function of preventing reverse connection to the power supply, stores the current connected to the boost circuit through the first capacitor, and inputs the current to the first port of the chip, i.e., the power supply input terminal. The first end of the fourth resistor is electrically connected with the enabling signal output end, and the enabling signal output end is mainly used for inputting external high-frequency or alternating-current signals into the chip.
In the embodiment of the utility model, the voltage boosting circuit is also called a power bootstrap circuit and is mainly used for boosting the voltage of the battery power supply end and reaching a preset power supply voltage parameter value, and the voltage boosting circuit is connected with the first battery power supply to provide an original power supply voltage for a voltage boosting part of the voltage boosting circuit, and the specific original parameter value is set according to experimental data.
In one embodiment, the boost circuit 40 further includes: the second diode D2, the third diode D3, the third capacitor C3, the fourth capacitor C4, the fifth capacitor C5 and the inductor L;
the output end of the second diode D2 is used as the output end of the boost circuit 40, connected to the first end of the first resistor R1, the output end of the third diode D3 is connected to the input end of the second diode D2, the first end of the third capacitor C3 is connected to the first end of the inductor L, the second end of the third capacitor C3 is connected to the input end of the second diode D2 and the output end of the third diode D3, the first end of the fourth capacitor C4 is connected to the output end of the second diode D2, and the second end of the fourth capacitor C4 is grounded; the first end of the fifth capacitor C5 is connected to the input end of the third diode D3 and the internal power supply SYS-5V0 of the boost circuit 40, the second end of the fifth capacitor C5 is grounded, the second end of the inductor L is connected to the input end of the third diode D3, and the first end of the inductor L is connected to the fourth port of the chip.
In the embodiment of the utility model, the second diode, the third diode and the third capacitor are boosting elements, and the voltage passing through the chip and the resistor is boosted to corresponding preset values. Specifically, the internal power supply of the boost power supply system is combined with a third capacitor, a fourth capacitor, a second diode and a third diode to bootstrap a power supply which is 4V higher than the power supply end of the battery, at the moment, the third resistor and the second resistor current detection rail are disconnected, and the boost circuit supplies power to the high-side current acquisition circuit through a first power supply path.
In the embodiment of the utility model, the boost circuit is a boost part in the first power supply path, is connected with the voltage of the first power supply through a chip, and forms a boost module according to different boost experiment requirements through at least one diode, at least one capacitor and at least one inductor. Specifically, the second diode, the third capacitor, the fourth capacitor, the fifth capacitor and the inductor are selected, the original power supply is stored and released through the inductor and the capacitor, and the voltage value is pulled up on the basis of the original power supply voltage, and can be a preset pull-up voltage value of 4V or a preset pull-up voltage value of 6V. The preset pull-up voltage value is not limited, and the optimal effect can be achieved according to experiments.
Referring to fig. 3, fig. 3 is a schematic diagram of a high-side current collecting circuit according to an embodiment of the utility model. The high-side current acquisition circuit 20 includes:
the operational amplifier circuit 21 is electrically connected with the power path switching circuit 10, and is used for receiving the voltage output by the power path switching circuit 10 and outputting an operational amplifier signal to be collected;
the load current acquisition circuit 22 is electrically connected with the operational amplification circuit 21 and is used for receiving the signal to be acquired by the operational amplifier and acquiring the current at the load 30 to obtain an acquisition signal;
and the stabilizing circuit 23 is electrically connected with the operational amplification circuit 21 and the load current acquisition circuit 22 and is used for ensuring that the acquisition signal is stabilized at a preset value.
As shown in fig. 4, specifically, the operational amplifier circuit includes; an operational amplifier U2, a sixth capacitor C6, a fifth resistor R5, and a load RLOAD;
the power supply terminal of the operational amplifier U2 and the first terminal of the sixth capacitor C6 are used as voltage input terminals of the operational amplifier circuit 21, electrically connected to the power supply path switching circuit 10, and used for receiving the voltage output by the power supply path switching circuit 10, and the ground terminal of the operational amplifier U2 and the second terminal of the sixth capacitor C6 are grounded;
the first end of the fifth resistor R5 is connected to the positive input end of the operational amplifier U2, the first end of the load RLOAD is connected to the second end of the fifth resistor R5, and the second end of the load RLOAD is grounded.
In this embodiment, the operational amplifier is generally used in the technical field, and is not limited in particular, where the fifth resistor has a function of matching the offset voltage of the operational amplifier.
Specifically, the load current acquisition circuit includes; a sixth resistor R6, a seventh resistor R7, and an eighth resistor R8;
the first end of the sixth resistor R6 is electrically connected to the inverting input terminal of the operational amplifier U2 and the stabilizing circuit 23, and the first end of the seventh resistor R7 is connected to the second end of the sixth resistor R6 and the fourth battery power KL 30-SWITCH;
the first end of the eighth resistor R8 is electrically connected to the stabilizing circuit 23, and the second end of the eighth resistor R8 is grounded.
In this embodiment, the sixth resistor, the seventh resistor, and the eighth resistor detect the collection signal of the load through the potential difference flowing through the sixth resistor and output the collection signal through the output port of the high-side current collection circuit, where the sixth resistor also has the function of matching the offset voltage of the op-amp.
Specifically, the stabilizing circuit comprises a ninth resistor R9 and a triode Q1;
the first end of the ninth resistor R9 is connected to the output end of the operational amplifier U2, the base of the triode Q1 is connected to the second end of the ninth resistor R9, the emitter of the triode Q1 is connected to the second end of the sixth resistor R6 and the inverting input end of the operational amplifier U2, and the collector of the triode Q1 is connected to the first end of the eighth resistor R8 and the output end of the high-side current collecting circuit 20.
In this embodiment, the ninth resistor R9 and the triode Q1 keep the output voltage stable at a preset value, so as to ensure the stability of the collected signal.
Based on the high-side current collection module, the embodiment of the utility model also provides a high-side current collection device, which comprises the high-side current collection module in the embodiment.
The above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions are intended to be included within the scope of the present utility model without departing from the spirit and scope of the embodiments of the present utility model.
Claims (10)
1. The utility model provides a high limit electric current collection module, its characterized in that includes:
the power supply path switching circuit comprises a plurality of power supply paths, and is used for controlling the on-off of each power supply path, and the voltages output by the power supply paths are different;
the first end of the high-side current acquisition circuit is electrically connected with the power supply path switching circuit;
the first end of the load is electrically connected with the second end of the high-side current acquisition circuit, and the second end of the load is grounded;
the high-side current acquisition circuit is used for acquiring current at the load under the condition of receiving voltage output by the power supply path switching circuit to obtain an acquisition signal.
2. The module of claim 1, wherein the power path switching circuit comprises:
the first power supply path comprises a first power supply, a voltage boosting circuit and a first resistor, wherein the first end of the voltage boosting circuit is electrically connected with the first power supply, the second end of the voltage boosting circuit is electrically connected with the first end of the first resistor, the second end of the first resistor is electrically connected with the high-side current acquisition circuit, the voltage boosting circuit is used for improving the voltage applied by the first power supply to the first resistor, and the first power supply path is used for outputting a first voltage to the high-side current acquisition circuit when the first power supply path is conducted and the second power supply path and the third power supply path are disconnected;
the second power supply path comprises a second power supply and a second resistor, the first end of the second resistor is electrically connected with the second power supply, the second end of the second resistor is electrically connected with the high-side current acquisition circuit, and the second power supply path is used for outputting a second voltage to the high-side current acquisition circuit under the condition that the second power supply path is conducted and the first power supply path and the third power supply path are disconnected;
the third power supply path comprises a third power supply and a third resistor, the first end of the third resistor is electrically connected with the third power supply, the second end of the third resistor is electrically connected with the high-side current acquisition circuit, and the third power supply path is used for outputting a third voltage to the high-side current acquisition circuit when the third power supply path is conducted and the first power supply path and the second power supply path are disconnected;
the voltages corresponding to the first power supply, the second power supply and the third power supply are different.
3. The module of claim 2, wherein the boost circuit comprises: the first diode, the first capacitor, the second capacitor, the fourth resistor and the chip;
the input end of the first diode is used as a power input end of the boost circuit and is connected with a battery power supply end; the output end of the first diode is connected with the first port of the chip, the first end of the first capacitor is connected with the output end of the first diode, and the second end of the first capacitor is grounded;
the first end of the fourth resistor is electrically connected with the enabling signal output end, the second end of the fourth resistor is connected with the second port of the chip, and the first end of the second capacitor is connected with the second end of the fourth resistor; the second end of the second capacitor is grounded, and the third port of the chip is grounded.
4. A module as claimed in claim 3, wherein the boost circuit further comprises: the second diode, the third capacitor, the fourth capacitor, the fifth capacitor and the inductor;
the output end of the second diode is used as the output end of the boost circuit, is connected with the first end of the first resistor, the output end of the third diode is connected with the input end of the second diode, the first end of the third capacitor is connected with the first end of the inductor, the second end of the third capacitor is connected with the input end of the second diode and the output end of the third diode, the first end of the fourth capacitor is connected with the output end of the second diode, and the second end of the fourth capacitor is grounded; the first end of the fifth capacitor is connected with the input end of the third diode and the internal power supply of the boost circuit, the second end of the fifth capacitor is grounded, the second end of the inductor is connected with the input end of the third diode, and the first end of the inductor is connected with the fourth port of the chip.
5. The module of claim 1, wherein the high-side current acquisition circuit comprises:
the operational amplification circuit is electrically connected with the power supply path switching circuit and is used for receiving the voltage output by the power supply path switching circuit and outputting a signal to be acquired by the operational amplifier;
the load current acquisition circuit is electrically connected with the operational amplifier circuit and is used for receiving the signal to be acquired by the operational amplifier and acquiring the current at the load to obtain an acquisition signal;
and the stabilizing circuit is electrically connected with the operational amplification circuit and the load current acquisition circuit and is used for ensuring that the acquisition signal is stabilized at a preset value.
6. The module of claim 5, wherein the operational amplifier circuit comprises; the operational amplifier, the sixth capacitor, the fifth resistor and the load;
the power supply end of the operational amplifier and the first end of the sixth capacitor are used as voltage input ends of the operational amplifier circuit and are electrically connected with the power supply path switching circuit to receive the voltage output by the power supply path switching circuit, and the grounding end of the operational amplifier and the second end of the sixth capacitor are grounded;
the first end of the fifth resistor is connected with the positive input end of the operational amplifier, the first end of the load is connected with the second end of the fifth resistor, and the second end of the load is grounded.
7. The module of claim 6, wherein the load current acquisition circuit comprises; a sixth resistor, a seventh resistor, an eighth resistor;
the first end of the sixth resistor is electrically connected with the reverse input end of the operational amplifier and the stabilizing circuit, and the first end of the seventh resistor is connected with the second end of the sixth resistor and a fourth battery power supply;
the first end of the eighth resistor is electrically connected with the stabilizing circuit, and the second end of the eighth resistor is grounded.
8. The module of claim 7, wherein the stabilizing circuit comprises a ninth resistor, a triode;
the first end of the ninth resistor is connected with the output end of the operational amplifier, the base electrode of the triode is connected with the second end of the ninth resistor, the emitter of the triode is connected with the second end of the sixth resistor and the reverse input end of the operational amplifier, and the collector of the triode is connected with the first end of the eighth resistor and the output end of the high-side current acquisition circuit.
9. A high side current harvesting device, comprising a high side current harvesting module according to any one of claims 1 to 8.
10. A vehicle comprising the high-side current collection device of claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321000169.8U CN219737623U (en) | 2023-04-27 | 2023-04-27 | High-side current acquisition module, device and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321000169.8U CN219737623U (en) | 2023-04-27 | 2023-04-27 | High-side current acquisition module, device and vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219737623U true CN219737623U (en) | 2023-09-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321000169.8U Active CN219737623U (en) | 2023-04-27 | 2023-04-27 | High-side current acquisition module, device and vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219737623U (en) |
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2023
- 2023-04-27 CN CN202321000169.8U patent/CN219737623U/en active Active
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