CN210912033U - Triode linear constant current driving circuit and battery management system - Google Patents
Triode linear constant current driving circuit and battery management system Download PDFInfo
- Publication number
- CN210912033U CN210912033U CN201921791222.4U CN201921791222U CN210912033U CN 210912033 U CN210912033 U CN 210912033U CN 201921791222 U CN201921791222 U CN 201921791222U CN 210912033 U CN210912033 U CN 210912033U
- Authority
- CN
- China
- Prior art keywords
- voltage
- constant current
- resistor
- input
- circuit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
Landscapes
- Electronic Switches (AREA)
Abstract
A triode linear constant current driving circuit and a battery management system are connected with a high-voltage interlocking interface and comprise an input voltage sampling circuit, a control circuit, a voltage adjusting circuit and a constant current driving circuit; the input voltage sampling circuit samples an input voltage to generate an input sampling signal; the control circuit generates a gating control signal according to the input sampling signal and judges the connection state of the high-voltage interlocking interface according to the detection voltage; the voltage adjusting circuit generates and adjusts the driving voltage according to the gating control signal; the constant current driving circuit generates a constant current according to the driving voltage; the high-voltage interlocking interface generates detection voltage according to the constant current; the voltage of the high-voltage interlocking interface is detected through the constant-current driving circuit, so that the connection states of full connection, half connection, disconnection and the like of the high-voltage interlocking interface are obtained, and the cost is low; meanwhile, the constant current driving circuit is low in power consumption, stable, less in heating, high in safety and stability and strong in practicability.
Description
Technical Field
The utility model belongs to the technical field of high-voltage system's safety inspection, especially, relate to a triode linear constant current drive circuit and battery management system.
Background
In a Battery Management System (BMS) of a new energy vehicle, in order to avoid an abnormal disconnection or half-connection of a high-voltage connector or a high-voltage module during connection, the Battery Management System needs to output a high-voltage interlocking signal and detect a feedback signal so as to perform safety control on a whole vehicle controller of the new energy vehicle. For the detection of the connection state of a high-voltage connector or a high-voltage module, the half-connection state cannot be detected by the original high-low level detection mode and the original PWM signal detection mode, and the half-connection state of the high-voltage module can be detected by the constant-current driving mode. However, in the traditional application, the constant current output by the battery management system mostly adopts a linear constant current chip or a power supply chip, the constant current chip technology on the market is basically mastered in foreign manufacturers at present, the problem of supply shortage is easy to occur, and the cost is higher when the constant current chip is adopted and the power supply chip is used for driving; in the current technical scheme, along with the increase of input voltage, the power consumption of the triode is also increased, so that the triode is easy to generate heat and potential safety hazard accidents occur.
Therefore, the problems that the constant current driving mode for detecting the high-voltage interlocking circuit is high in cost, large in power consumption, easy to generate heat, high in potential safety hazard and high in dependence on foreign components exist in the traditional technical scheme.
Disclosure of Invention
In view of this, the embodiment of the utility model provides a triode linear constant current circuit and battery management system aims at solving the constant current drive mode that exists among the traditional technical scheme and detects high-voltage interlock circuit with high costs, the consumption is big, generate heat easily and lead to having higher potential safety hazard to the big problem of dependence to foreign elements and parts.
The utility model discloses the first aspect of the embodiment provides a triode linear constant current drive circuit, with high-pressure interlocking interface connection, include:
the utility model provides a triode linear constant current drive circuit which characterized in that, with high-voltage interlocking interface connection, includes:
an input voltage sampling circuit configured to sample an input voltage to generate an input sampled signal;
the control circuit is connected with the input voltage sampling circuit and is configured to generate a gating control signal according to the input sampling signal and obtain the connection state of the high-voltage interlocking interface according to the detection voltage;
the voltage adjusting circuit is connected with the control circuit and is configured to generate and adjust driving voltage according to the gating control signal;
the constant current driving circuit is connected with the voltage adjusting circuit and the high-voltage interlocking interface and is configured to generate constant current according to the driving voltage;
the high-voltage interlock interface is configured to generate the detection voltage according to the constant current.
In one embodiment, the voltage regulation circuit includes a plurality of parallel voltage regulation components.
In one embodiment, the voltage regulation component comprises a switching element and a regulation resistor;
the input end of the switch element is the input voltage input end of the voltage adjusting component, the control end of the switch element is the gating control signal input end of the voltage adjusting component, the output end of the switch element is connected with the first end of the adjusting resistor, and the second end of the adjusting resistor is the driving voltage output end of the voltage adjusting component.
In one embodiment, the switching element includes at least one of a control switch, a field effect transistor, a transistor, and a relay.
In one embodiment, the voltage regulation circuit comprises a first voltage regulation component, a second voltage regulation component and a third voltage regulation component which are connected in parallel;
the first voltage adjustment assembly includes: a first switch and a first adjusting resistor.
The input end of the first switch is the input voltage input end of the first voltage adjusting component, the control end of the first switch is the first gating control signal input end of the first voltage adjusting component, the output end of the first switch is connected with the first end of the first adjusting resistor, and the second end of the first adjusting resistor is the driving voltage output end of the first voltage adjusting component;
the second voltage adjustment assembly includes: a second switch and a second adjusting resistor;
the input end of the second switch is the input voltage input end of the second voltage adjusting component, the control end of the second switch is the second gating control signal input end of the second voltage adjusting component, the output end of the second switch is connected with the first end of the second adjusting resistor, and the second end of the second adjusting resistor is the driving voltage output end of the second voltage adjusting component;
the third voltage adjustment assembly includes: a third switch and a third adjusting resistor;
the input end of the third switch is the input voltage input end of the third voltage adjusting component, the control end of the third switch is the third gating control signal input end of the third voltage adjusting component, the output end of the third switch is connected with the first end of the third adjusting resistor, and the second end of the third adjusting resistor is the driving voltage output end of the third voltage adjusting component;
the gate control signals include the first gate control signal, the second gate control signal, and the third gate control signal.
In one embodiment, the constant current driving circuit comprises a triode, a first resistor, a second resistor and a voltage regulator tube;
the collector of the triode and the first end of the first resistor jointly form a driving voltage input end of the constant current driving circuit;
the base electrode of the triode is connected with the second end of the first resistor and the cathode of the voltage regulator tube, and the drain electrode of the triode is connected with the first end of the second resistor;
and the anode of the voltage regulator tube and the second end of the second resistor jointly form a constant current output end of the constant current driving circuit.
In one embodiment, the input voltage sampling circuit includes: a third resistor and a fourth resistor;
the first end of the third resistor is the input voltage input end of the input voltage sampling circuit, the second end of the third resistor is connected with the first end of the fourth resistor, and the second end of the fourth resistor is connected with a power ground.
In one embodiment, the control circuit comprises a microprocessor.
In one embodiment, the transistor is an NPN transistor.
A second aspect of the embodiments of the present invention provides a battery management system, the battery management system includes the above triode linear constant current driving circuit.
The triode linear constant current driving circuit comprises an input voltage sampling circuit, a control circuit, a voltage adjusting circuit and a constant current driving circuit, so that the voltage of the high-voltage interlocking interface is detected by the constant current driving circuit to obtain the connection states of full connection, half connection, non-connection and the like of the high-voltage interlocking interface (namely the connection states of full connection, half connection, non-connection and the like of a high-voltage connector or a high-voltage module), the cost is low, and the dependence on foreign chips is avoided; meanwhile, one of the plurality of parallel voltage adjusting assemblies is gated according to the input voltage value, so that appropriate and stable driving voltage is output to the constant current driving circuit, the constant current driving circuit is low and stable in power consumption, less in heat emission, high in safety and stability and high in practicability.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive labor.
Fig. 1 is a schematic structural diagram of a triode linear constant current driving circuit according to an embodiment of the present invention;
fig. 2 is another schematic structural diagram of a triode linear constant current driving circuit according to an embodiment of the present invention;
fig. 3 is a schematic circuit diagram illustrating an example of a triode linear constant current driving circuit according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1, a schematic structural diagram of a triode linear constant current driving circuit according to an embodiment of the present invention is shown, for convenience of description, only the parts related to the embodiment are shown, and detailed descriptions are as follows:
a triode linear constant current driving circuit is connected with a high-voltage interlocking interface 15 and comprises: an input voltage sampling circuit 11, a control circuit 12, a voltage adjusting circuit 13, and a constant current driving circuit 14.
The input voltage sampling circuit 11 is configured to sample an input voltage to generate an input sampling signal; the control circuit 12 is connected with the input voltage sampling circuit 11, and is configured to generate a gating control signal according to the input sampling signal and obtain the connection state of the high-voltage interlocking interface according to the detection voltage; the voltage adjusting circuit 13 is connected to the control circuit 12, and configured to generate and adjust a driving voltage according to the gate control signal; the constant current driving circuit 14 is connected with the voltage adjusting circuit 13 and the high-voltage interlocking interface 15, and is configured to generate a constant current according to the driving voltage; the high voltage interlock interface 15 is configured to generate a detection voltage from the constant current.
In specific implementation, the input voltage sampling circuit 11 samples an input voltage value to generate an input sampling signal, the control circuit 12 calculates the input voltage value according to the input sampling signal and generates a gating control signal according to the input voltage value, the voltage adjusting circuit 13 generates and adjusts a driving voltage according to the gating control signal, the constant current driving circuit 14 generates a constant current according to the driving voltage, the high-voltage interlock interface 15 generates a detection voltage according to the constant current, the detection voltage is a voltage value at two ends of the high-voltage interlock interface 15, the control circuit 12 obtains a connection state of the high-voltage interlock interface 15 according to the detection voltage, that is, the control circuit 12 judges the connection state of a high-voltage connector or a high-voltage module according to the detection voltage. Because the high-voltage interlocking interface 15 is driven by a constant current, when the high-voltage interlocking interface is completely and correctly connected, the output voltage value at the two ends of the high-voltage interlocking interface is a first voltage value; when the high-voltage interlocking interface is disconnected, the output voltage value at the two ends of the high-voltage interlocking interface is a second voltage value; when the connection state of the high-voltage interlocking interface is between complete correct connection and disconnection, the output voltage values at two ends of the high-voltage interlocking interface are located in a preset voltage interval, the first voltage value is smaller than the second voltage value, and the preset voltage interval is between the first voltage value and the second voltage value, so that the connection state of the high-voltage interlocking interface 15 is obtained by detecting voltage.
Referring to fig. 2, in one embodiment, the voltage adjustment circuit 13 includes a plurality of voltage adjustment components 130 connected in parallel. Wherein N is a positive integer greater than or equal to 1.
Optionally, the voltage adjusting component 130 includes a switching element S and an adjusting resistor R.
The input terminal of the switching element S is the input voltage input terminal of the voltage adjustment component 130, the control terminal of the switching element S is the gating control signal input terminal of the voltage adjustment component 130, the output terminal of the switching element S is connected to the first terminal of the adjustment resistor R, and the second terminal of the adjustment resistor R is the driving voltage output terminal of the voltage adjustment component 130.
In specific implementation, the control circuit 12 generates different gating control signals according to different input voltage values, controls to switch on different voltage adjustment components 130, and reasonably divides the input voltage by using the voltage adjustment components 130, so that stable driving voltage is output to the constant current driving circuit 14, and the triode linear constant current driving circuit has low power consumption, stability, less heat generation, high safety and stability and strong practicability.
Optionally, the switching element S includes at least one of a control switch, a field effect transistor, a triode, and a relay. Through the components and parts which can carry out on-off control of the circuit according to the gating control signal and have the switch control function, different voltage adjusting components 130 can be gated according to different input voltage values so as to reasonably divide the input voltage, and therefore suitable and stable driving voltage can be output to the constant current driving circuit 14.
Referring to fig. 3, in one embodiment, the voltage adjusting circuit 13 includes three voltage adjusting components 130, that is, the voltage adjusting circuit 13 includes a first voltage adjusting component 130-1, a second voltage adjusting component 130-2 and a third voltage adjusting component 130-3 connected in parallel.
The first voltage adjustment component 130-1 includes: a first switch S0 and a first tuning resistor R1.
The input terminal of the first switch S0 is the input voltage input terminal of the first voltage adjustment component 130-1, the control terminal of the first switch S0 is the first gate control signal input terminal of the first voltage adjustment component 130-1, the output terminal of the first switch S0 is connected to the first terminal of the first adjustment resistor R1, and the second terminal of the first adjustment resistor R1 is the driving voltage output terminal of the first voltage adjustment component 130-1.
The second voltage adjustment component 130-2 includes: a second switch S1 and a second tuning resistor R2.
An input terminal of the second switch S1 is an input voltage input terminal of the second voltage adjustment component 130-2, a control terminal of the second switch S1 is a second gate control signal input terminal of the second voltage adjustment component 130-2, an output terminal of the second switch S1 is connected to a first terminal of a second adjustment resistor R2, and a second terminal of the second adjustment resistor R2 is a driving voltage output terminal of the second voltage adjustment component 130-2.
The third voltage adjustment component 130-3 includes: a third switch S2 and a third trim resistor R4.
The input terminal of the third switch S2 is the input voltage input terminal of the third voltage adjustment component 130-3, the control terminal of the third switch S2 is the third gate control signal input terminal of the third voltage adjustment component 130-3, the output terminal of the third switch S2 is connected to the first terminal of the third adjustment resistor R4, and the second terminal of the third adjustment resistor R4 is the driving voltage output terminal of the third voltage adjustment component 130-3.
The gate control signals include a first gate control signal, a second gate control signal, and a third gate control signal.
In a specific implementation, the voltage adjusting circuit 13 includes a plurality of voltage adjusting components connected in parallel, and different voltage adjusting components divide the input voltage into different voltage values, so that the driving voltage output to the constant current driving circuit 14 is appropriate and stable, for example, when sampling detects that the input voltage value is large, the voltage adjusting components with large divided voltage values are controlled to be connected; when the sampling detects that the value of the input voltage is small, the voltage adjusting component with a small divided voltage value is controlled to be communicated, so that a proper and stable driving voltage is output to the constant current driving circuit 14. It should be noted that, by adjusting the resistance value of the voltage dividing element (adjusting resistor), the voltage value divided by the voltage adjusting component can be adjusted, so that the voltage output to the constant current driving circuit 14 is prevented from changing obviously along with the change of the input voltage value, the driving voltage output to the constant current driving circuit is suitable and stable, and the purposes of reducing the power consumption of the constant current driving circuit and reducing the heat generation are achieved.
Referring to fig. 3, in one embodiment, the constant current driving circuit 14 includes a transistor Q1, a first resistor R5, a second resistor R6, and a regulator tube Z1.
The collector of the transistor Q1 and the first end of the first resistor R5 together form a driving voltage input terminal of the constant current driving circuit 14.
The base of the triode Q1 is connected with the second end of the first resistor R5 and the cathode of the voltage regulator tube Z1, and the drain of the triode Q1 is connected with the first end of the second resistor R6.
The anode of the regulator tube Z1 and the second end of the second resistor R6 together form a constant current output terminal of the constant current driving circuit 14.
Referring to fig. 3, in one embodiment, the input voltage sampling circuit 11 includes: a third resistor R7 and a fourth resistor R8.
A first terminal of the third resistor R7 is an input voltage input terminal of the input voltage sampling circuit 11, a second terminal of the third resistor R7 is connected to a first terminal of the fourth resistor R8, and a second terminal of the fourth resistor R8 is connected to ground.
In one embodiment, the transistor is an NPN transistor.
In one of the embodiments, the control circuit 12 comprises a microprocessor MCU.
In a specific implementation, the high-voltage interlock interface 15 includes an analog load R3, and the high-voltage interlock interface is current-limited through the analog load R3. Optionally, the voltage at the two ends of the high-voltage interlocking interface can be detected in an analog manner by detecting the voltage at the two ends of the analog load R3, and then the connection state of the high-voltage interlocking interface (i.e., the high-voltage connector or the high-voltage module) can be obtained according to the detected voltage.
The working principle of the triode linear constant current driving circuit will be briefly described with reference to fig. 3 as follows:
the voltage at the point a represents the input voltage, the voltage at the point B represents the driving voltage of the stable constant current driving circuit 14, the input voltage VINPUT is sampled by the input voltage sampling circuit 11 to generate an input voltage sampling signal, the input voltage sampling signal is received and calculated by the microprocessor MCU (the control circuit 12) of the battery management system to generate a gate control signal according to the input voltage value, one of the switch elements (one of the first switch S0, the second switch S1 and the third switch S2) in the voltage adjusting circuit 13 is controlled to communicate the input voltage, for example, the input voltage with the input range of 9V-16V is divided into 3 voltage ranges, 9V-12V, 12V-15V and 15V-18V respectively, when the input voltage is detected to be 9V-12V, the first S0 is closed, turning off the second S1 and the third switch S2, turning on the first voltage adjustment component 130-1 where the first switch S0 and the first adjustment resistor R1 are located; when the input voltage is detected to be 12V-15V, the second switch S1 is closed, the first switch S0 and the third switch S2 are opened, and the second voltage adjusting component 130-2 where the second switch S1 and the second adjusting resistor R2 are located is turned on; when the input voltage is detected to be 15V-18V, the third switch S2 is closed, the first switch S0 and the second switch S1 are opened, and the third voltage adjusting component 130-3 where the third switch S2 and the third adjusting resistor R3 are located is turned on; the driving voltage output to the triode Q1 is a suitable and stable voltage value, so that the constant current driving circuit 14 composed of the triode Q1, the first resistor R5, the second resistor R6 and the voltage regulator tube Z1 outputs a constant current to the high-voltage interlock interface and the analog load R3. The power consumption of the triode Q1 can be reduced by adjusting the resistance values of the first adjusting resistor R1, the second adjusting resistor R2 and the third adjusting resistor R4, the heat emission of the triode Q1 is reduced, and the stability and the reliability of the triode constant current driving circuit are improved. The voltage at the two ends of the high-voltage interlocking interface is detected by detecting the voltage at the two ends of the analog load R3, so that the microprocessor MCU is used for detecting the voltage at the two ends of the high-voltage interlocking interface and obtaining whether the connection state of the high-voltage interlocking interface is completely and correctly connected, unconnected or half-connected, so that safe battery management measures are correspondingly taken to carry out safety control in different states, and the safety and the reliability of a battery management system are improved.
A second aspect of the embodiments of the present invention provides a battery management system, which includes the above triode linear constant current driving circuit.
The battery management system provided by the embodiment of the utility model can detect the connection states of complete connection, half connection and disconnection of a high-voltage interlocking interface (a high-voltage connector or a high-voltage module) through the constant-current driving circuit, has low cost and avoids the dependence on foreign chips; meanwhile, the constant current driving circuit is low and stable in power consumption, less in heat generation and high in safety and stability, safety and reliability and practicability of the battery management system are improved.
However, it will be understood by those skilled in the art that the embodiments may be practiced without such specific details. In other instances, well-known operations, components and elements have been described in detail so as not to obscure the embodiments in the description. It will be appreciated by those of ordinary skill in the art that the embodiments herein and shown are non-limiting examples, and thus, it can be appreciated that the specific structural and functional details disclosed herein may be representative and do not necessarily limit the scope of the embodiments.
Reference throughout the specification to "various embodiments," "in an embodiment," "one embodiment," or "an embodiment," etc., means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment. Thus, appearances of the phrases "in various embodiments," "in some embodiments," "in one embodiment," or "in an embodiment," or the like, in places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. Thus, a particular feature, structure, or characteristic illustrated or described in connection with one embodiment may be combined, in whole or in part, with features, structures, or characteristics of one or more other embodiments without presuming that such combination is not an illogical or functional limitation.
Although certain embodiments have been described above with a certain degree of particularity, those skilled in the art could make numerous alterations to the disclosed embodiments without departing from the scope of this disclosure. Joinder references (e.g., attached, coupled, connected, and the like) are to be construed broadly and may include intermediate members between a connection of elements and relative movement between elements. Thus, connection references do not necessarily imply that two elements are directly connected/coupled and in a fixed relationship to each other. The use of "for example" throughout this specification should be interpreted broadly and used to provide non-limiting examples of embodiments of the disclosure, and the disclosure is not limited to such examples. It is intended that all matter contained in the above description or shown in the accompanying drawings shall be interpreted as illustrative only and not limiting. Changes in detail or structure may be made without departing from the disclosure.
In the above embodiments, the descriptions of the respective embodiments have respective emphasis, and reference may be made to the related descriptions of other embodiments for parts that are not described or illustrated in a certain embodiment.
The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. The utility model provides a triode linear constant current drive circuit which characterized in that, with high-voltage interlocking interface connection, includes:
an input voltage sampling circuit configured to sample an input voltage to generate an input sampled signal;
the control circuit is connected with the input voltage sampling circuit and is configured to generate a gating control signal according to the input sampling signal and obtain the connection state of the high-voltage interlocking interface according to the detection voltage;
the voltage adjusting circuit is connected with the control circuit and is configured to generate and adjust driving voltage according to the gating control signal;
the constant current driving circuit is connected with the voltage adjusting circuit and the high-voltage interlocking interface and is configured to generate constant current according to the driving voltage;
the high-voltage interlock interface is configured to generate the detection voltage according to the constant current.
2. The triode linear constant current drive circuit of claim 1, wherein the voltage regulation circuit comprises a plurality of voltage regulation components connected in parallel.
3. The triode linear constant current drive circuit of claim 2, wherein the voltage regulation component comprises a switching element and a regulation resistor;
the input end of the switch element is the input voltage input end of the voltage adjusting component, the control end of the switch element is the gating control signal input end of the voltage adjusting component, the output end of the switch element is connected with the first end of the adjusting resistor, and the second end of the adjusting resistor is the driving voltage output end of the voltage adjusting component.
4. The triode linear constant current drive circuit of claim 3, wherein the switching element comprises at least one of a control switch, a field effect transistor, a triode, and a relay.
5. The triode linear constant current drive circuit of claim 3, wherein the voltage regulation circuit comprises a first voltage regulation component, a second voltage regulation component and a third voltage regulation component connected in parallel;
the first voltage adjustment assembly includes: a first switch and a first adjusting resistor;
the input end of the first switch is the input voltage input end of the first voltage adjusting component, the control end of the first switch is the first gating control signal input end of the first voltage adjusting component, the output end of the first switch is connected with the first end of the first adjusting resistor, and the second end of the first adjusting resistor is the driving voltage output end of the first voltage adjusting component;
the second voltage adjustment assembly includes: a second switch and a second adjusting resistor;
the input end of the second switch is the input voltage input end of the second voltage adjusting component, the control end of the second switch is the second gating control signal input end of the second voltage adjusting component, the output end of the second switch is connected with the first end of the second adjusting resistor, and the second end of the second adjusting resistor is the driving voltage output end of the second voltage adjusting component;
the third voltage adjustment assembly includes: a third switch and a third adjusting resistor;
the input end of the third switch is the input voltage input end of the third voltage adjusting component, the control end of the third switch is the third gating control signal input end of the third voltage adjusting component, the output end of the third switch is connected with the first end of the third adjusting resistor, and the second end of the third adjusting resistor is the driving voltage output end of the third voltage adjusting component;
the gate control signals include the first gate control signal, the second gate control signal, and the third gate control signal.
6. The triode linear constant current drive circuit according to claim 1, wherein the constant current drive circuit comprises a triode, a first resistor, a second resistor and a voltage regulator tube;
the collector of the triode and the first end of the first resistor jointly form a driving voltage input end of the constant current driving circuit;
the base electrode of the triode is connected with the second end of the first resistor and the cathode of the voltage regulator tube, and the drain electrode of the triode is connected with the first end of the second resistor;
and the anode of the voltage regulator tube and the second end of the second resistor jointly form a constant current output end of the constant current driving circuit.
7. The triode linear constant current drive circuit of claim 1, wherein the input voltage sampling circuit comprises: a third resistor and a fourth resistor;
the first end of the third resistor is the input voltage input end of the input voltage sampling circuit, the second end of the third resistor is connected with the first end of the fourth resistor, and the second end of the fourth resistor is connected with a power ground.
8. The triode linear constant current drive circuit of claim 1, wherein the control circuit comprises a microprocessor.
9. The triode linear constant current drive circuit of claim 6, wherein the triode is an NPN type triode.
10. A battery management system, characterized in that the battery management system comprises a triode linear constant current drive circuit according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921791222.4U CN210912033U (en) | 2019-10-23 | 2019-10-23 | Triode linear constant current driving circuit and battery management system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921791222.4U CN210912033U (en) | 2019-10-23 | 2019-10-23 | Triode linear constant current driving circuit and battery management system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210912033U true CN210912033U (en) | 2020-07-03 |
Family
ID=71362657
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921791222.4U Active CN210912033U (en) | 2019-10-23 | 2019-10-23 | Triode linear constant current driving circuit and battery management system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210912033U (en) |
-
2019
- 2019-10-23 CN CN201921791222.4U patent/CN210912033U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102593881B (en) | Charging power supply circuit, method and application apparatus | |
| CN201898330U (en) | Reverse-connection-preventive circuit | |
| CN101720147B (en) | LED driving circuit and LED device | |
| CN203574536U (en) | Starting circuit of PWM chip of wide-voltage auxiliary power source | |
| CN105281568A (en) | Voltage-reducing circuit | |
| CN104467379A (en) | Switching tube driving circuit of bridge type switching topology | |
| CN102570840A (en) | Voltage anode and cathode polarity switching circuit | |
| CN102998505B (en) | Battery undervoltage detection circuit | |
| CN105071469A (en) | Solar charging circuit | |
| CN201917839U (en) | Automatic maintaining voltage adjusting circuit for PDP (Plasma Display Panel) display screen | |
| CN108667285B (en) | Control circuit for adjusting relation between switching frequency and load current and switching power supply | |
| CN212751824U (en) | High-power switching power supply circuit and power supply board | |
| CN102749501B (en) | Isolated direct current high voltage detection method and isolated direct current high voltage detection circuit | |
| CN106253210A (en) | Under-voltage protecting circuit | |
| CN210912033U (en) | Triode linear constant current driving circuit and battery management system | |
| CN201750125U (en) | Short circuit self-locking protection circuit | |
| CN210430939U (en) | Charging control switching circuit and charging control switching system | |
| CN201570444U (en) | Main contactor energy-saving circuit with wide-range voltage input | |
| CN205791623U (en) | Charge port protector | |
| CN210724292U (en) | Lithium battery charger with multi-mode charging function | |
| CN210347751U (en) | Current stepping measuring circuit | |
| CN211321234U (en) | H-bridge rapid linear adjustment driving circuit in probe power supply | |
| CN1274078C (en) | Intelligent remote-control contact light-modulating switch | |
| CN207766002U (en) | A kind of output control circuit of Battery formation power supply | |
| CN105517254A (en) | LED power switch control method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |