CN219227575U - Acceleration turn-on and turn-off circuit - Google Patents
Acceleration turn-on and turn-off circuit Download PDFInfo
- Publication number
- CN219227575U CN219227575U CN202223596449.8U CN202223596449U CN219227575U CN 219227575 U CN219227575 U CN 219227575U CN 202223596449 U CN202223596449 U CN 202223596449U CN 219227575 U CN219227575 U CN 219227575U
- Authority
- CN
- China
- Prior art keywords
- transistor
- resistor
- pole
- turn
- switch unit
- 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
Landscapes
- Electronic Switches (AREA)
Abstract
The utility model relates to the technical field of electronic circuits, and particularly discloses an acceleration on-off circuit, which comprises a driving chip, a first transistor, a battery pack and an acceleration on-off module, wherein the driving chip is connected with the first transistor; the acceleration on-off module comprises a first resistor, an acceleration on-off switch unit and an acceleration off switch unit; the D pole of the first transistor is connected with the positive pole B+ of the battery pack and the accelerating opening switch unit, the accelerating opening switch unit is connected with the signal output end of the driving chip and the first end of the first resistor, and the second end of the first resistor is connected with the G pole of the first transistor; the S electrode of the first transistor is connected with an acceleration turn-off switch unit and an output positive end P+, and the acceleration turn-off switch unit is connected with a signal output end of the driving chip and a first end of the first resistor; the utility model can rapidly turn on and off the first transistor, so that the turn-on and turn-off loss of the first transistor is reduced, and the efficiency and the use safety are improved.
Description
Technical Field
The present utility model relates to the field of electronic circuits, and in particular, to an acceleration switching on and off circuit.
Background
With the development of technology and the improvement of living standard, electronic products are seen everywhere in life, such as electric tools, electric bicycles, toys for children, smart home, etc., and along with the increase of electronic products, the application of battery packs is also becoming more and more widespread.
Since the application of the battery pack is closely related to the life of people, the safety of the battery pack is particularly important. When most of battery packs are output to be turned off, the turn-on loss is increased and the efficiency is reduced due to long turn-off time of the transistor; when short circuit, because the current is big, the off time of transistor is long, can appear transistor breakdown and burn out even. In addition, when the battery pack is turned on, the transistor is turned on for a long time, so that the turn-on loss is increased, the efficiency is reduced, and meanwhile, potential safety hazards exist.
As shown in fig. 1, which is an application schematic diagram of the conventional AFE to MOSFET control, when the output of the battery pack is turned off, after the AFE detects the turn-off signal, the potential of the control signal afe_g gradually decreases, and the potential of the Q1G terminal gradually decreases through the path Q1G- > R1- > afe_g, so that the Q1 GS voltage gradually decreases, and the MOSFET Q1 gradually turns off; due to the parasitic capacitance, the control signal afe_g needs about 200uS to reduce the Q1G terminal potential to be equal to the Q1S terminal potential, i.e., the Q1 turn-off process needs about 200uS (in order not to affect the normal action of Q1 under normal conditions, the slow effect of afe_g reduction cannot be eliminated by adjusting the impedance value of R2), and the increase of internal resistance during Q1 turn-off process leads to the increase of turn-off loss and efficiency reduction; when in short circuit, the short circuit current of the battery pack is extremely large, the internal resistance of the Q1 is increased, the heating pole is increased, the range of the safety area of the Q1 is seriously exceeded, and the Q1 is broken down and burnt out; when the output of the battery pack is on, when the AFE detects a load, the potential of a control signal AFE_G gradually rises, and the potential of the Q1G end gradually rises through a path of the AFE_G- > R1- > Q1G end, so that the Q1 GS voltage gradually rises, and the MOSFET Q1 is gradually turned on; due to the parasitic capacitance, the control signal afe_g needs about 200uS to reduce the Q1G terminal potential to be equal to the Q1S terminal potential, i.e., the Q1 turn-on process needs about 200uS, and the internal resistance increases during the Q1 turn-on process, resulting in increased turn-on loss and reduced efficiency.
Disclosure of Invention
Aiming at the problems of increased loss, reduced efficiency and hidden safety hazards when the battery pack is turned on and off, the utility model provides an accelerating on and off circuit which can rapidly turn on and off a first transistor to reduce the on and off loss of the first transistor, thereby improving the efficiency and the use safety.
In order to solve the technical problems, the utility model provides the following specific scheme:
an acceleration on and off circuit comprises a driving chip, a first transistor, a battery pack and an acceleration on and off module;
the acceleration on-off module comprises a first resistor, an acceleration on-off switch unit and an acceleration off switch unit;
the D pole of the first transistor is connected with the positive pole B+ of the battery pack and the accelerating opening switch unit, the accelerating opening switch unit is connected with the signal output end of the driving chip and the first end of the first resistor, and the second end of the first resistor is connected with the G pole of the first transistor;
after the signal output end of the driving chip outputs a signal to enable the accelerating opening switch unit to be conducted, a passage is formed among the positive pole B+ of the battery pack, the accelerating opening switch unit, the first resistor and the G pole of the first transistor, and the first transistor is opened;
the S electrode of the first transistor is connected with an acceleration turn-off switch unit and an output positive end P+, and the acceleration turn-off switch unit is connected with a signal output end of the driving chip and a first end of the first resistor;
after the signal output end of the driving chip outputs a signal to enable the acceleration turn-off switch unit to be turned on, a passage is formed among the G pole of the first transistor, the first resistor, the acceleration turn-off switch unit and the S pole of the first transistor, and the first transistor is turned off.
In some embodiments, the turn-on accelerating switch unit includes a first diode and a second transistor, a first end of the first diode is connected to a D pole of the first transistor and a positive pole b+ of the battery pack, a second end of the first diode is connected to a first end of the second transistor, a controlled end of the second transistor is connected to a signal output end of the driving chip, a second end of the second transistor is connected to a first end of the first resistor, and the first diode is used for ensuring normal operation of the circuit.
In some embodiments, the accelerated turn-off switching unit includes a third transistor, a second end of the third transistor is connected to a first end of the first resistor, a controlled end of the third transistor is connected to a signal output end of the driving chip, a first end of the third transistor is connected to an S pole and an output positive end p+ of the first transistor, and a G pole and an S pole of the first transistor are equipotential through conduction of the third transistor, so that the first transistor is turned off, loss is reduced, and efficiency is improved.
In some embodiments, the controlled end of the second transistor and the controlled end of the third transistor are connected to the signal output end of the driving chip through a second resistor, and the second resistor is used for performing a current limiting function and limiting the current of the branch circuit, so as to prevent the components connected in series from being burnt out due to excessive current.
In some embodiments, the second transistor and/or the third transistor is a field effect transistor or a triode, the field effect transistor is developed on the basis of the triode, the triode controls output through the magnitude of current, and power is consumed by input; the field effect transistor is controlled to output through input voltage without consuming power, and in the circuit design, the field effect transistor or triode can be selected according to the requirement.
In some embodiments, the second transistor and the third transistor are triodes, and the triodes can control a larger variation of the collector current by a small variation of the base current, so that the collector current is rapidly turned on to further promote the on or off of the first transistor, and the efficiency is improved.
In some embodiments, the first resistor is connected to the G-pole of the first transistor, the second terminal of the third resistor is connected to the S-pole of the first transistor, the third resistor is capable of preventing static electricity from damaging the first transistor, and a fixed bias is provided to ensure effective turn-off of the first transistor.
In some embodiments, the first resistor and/or the third resistor is a fixed-value resistor, an adjustable resistor or a potentiometer, the first resistor is used for rapidly releasing the potential of the original residual G pole of the first transistor, and the falling speed of the original residual G pole potential of the first transistor can be adjusted by adjusting the resistance of the first resistor; the third resistor is adjusted according to the parameter requirement of the circuit design to ensure the effective turn-off of the first transistor.
In some embodiments, the battery pack further comprises a fourth resistor, a first end of the fourth resistor is connected with a negative electrode B-of the battery pack, a second end of the fourth resistor is connected with an output negative electrode P-of the battery pack, the fourth resistor is a sampling resistor and is used for collecting current in a circuit and the like, and a driving chip is convenient to output a corresponding control signal.
In some embodiments, the driving chip is an AFE analog front end chip, and the AFE analog front end chip is specifically referred to as a battery sampling chip in the BMS and is used for sampling the voltage and the temperature of the battery core, detecting the turn-off signal of the battery pack, inserting the load, and the like, so as to output a corresponding control signal conveniently.
After the signal output end of the driving chip outputs a signal to enable the accelerating on-off unit to be conducted, a positive electrode B+ of the battery pack, the accelerating on-off unit, the first resistor and the G electrode of the first transistor form a passage, so that the potential of the G electrode of the first transistor is rapidly increased, the GS junction voltage of the first transistor is rapidly increased, the first transistor is turned on, and loss is reduced and efficiency is improved; after the signal output end of the driving chip outputs a signal to enable the acceleration turn-off switch unit to be conducted, a passage is formed between the G pole of the first transistor, the first resistor and the S pole of the first transistor, the original residual potential of the G pole of the first transistor is rapidly released through the first resistor, the G pole and the S pole of the first transistor are rapidly equipotential, and the first transistor is turned off, so that loss is reduced and efficiency is improved.
Drawings
FIG. 1 is a prior art control schematic diagram provided in the background;
FIG. 2 is a block diagram of an acceleration on and off circuit according to an embodiment of the present utility model;
fig. 3 is a schematic circuit diagram of an acceleration on and off circuit according to an embodiment of the present utility model.
Detailed Description
The preferred embodiments of the present application will be described in detail below with reference to the attached drawings so that the advantages and features of the present application will be more readily understood by those skilled in the art, thereby more clearly defining the scope of the present application.
Referring to the drawings, wherein like reference numbers refer to like elements throughout, the principles of the present application are illustrated as being implemented in a suitable computing environment. The following description is based on the illustrated embodiments of the present application and should not be taken as limiting other embodiments not described in detail herein.
For example, an acceleration on and off circuit includes a driving chip, a first transistor, a battery pack, and an acceleration on and off module; the acceleration on-off module comprises a first resistor, an acceleration on-off switch unit and an acceleration off switch unit; the D pole of the first transistor is connected with the positive pole B+ of the battery pack and the accelerating opening switch unit, the accelerating opening switch unit is connected with the signal output end of the driving chip and the first end of the first resistor, and the second end of the first resistor is connected with the G pole of the first transistor; after the signal output end of the driving chip outputs a signal to enable the accelerating opening switch unit to be conducted, a passage is formed among the positive pole B+ of the battery pack, the accelerating opening switch unit, the first resistor and the G pole of the first transistor, and the first transistor is opened; the S electrode of the first transistor is connected with an acceleration turn-off switch unit and an output positive end P+, and the acceleration turn-off switch unit is connected with a signal output end of the driving chip and a first end of the first resistor; after the signal output end of the driving chip outputs a signal to enable the acceleration turn-off switch unit to be turned on, a passage is formed among the G pole of the first transistor, the first resistor, the acceleration turn-off switch unit and the S pole of the first transistor, and the first transistor is turned off.
After the signal output end of the driving chip outputs a signal to enable the accelerating on-off unit to be conducted, a positive electrode B+ of the battery pack, the accelerating on-off unit, the first resistor and the G electrode of the first transistor form a passage, so that the potential of the G electrode of the first transistor is rapidly increased, the GS junction voltage of the first transistor is rapidly increased, the first transistor is turned on, and loss is reduced and efficiency is improved; after the signal output end of the driving chip outputs a signal to enable the acceleration turn-off switch unit to be conducted, a passage is formed between the G pole of the first transistor, the first resistor and the S pole of the first transistor, the original residual potential of the G pole of the first transistor is rapidly released through the first resistor, the G pole and the S pole of the first transistor are rapidly equipotential, and the first transistor is turned off, so that loss is reduced and efficiency is improved.
Embodiment one:
as shown in fig. 2, an acceleration on-off circuit includes a driving chip, a first transistor, a battery pack and an acceleration on-off module, wherein the first transistor is Q1, and the driving chip is used for detecting whether a load is inserted into the circuit, a load is disconnected from the circuit, and the like, so as to output a corresponding control signal; the acceleration switching-on/off module is used for receiving the control signal of the driving chip and rapidly switching on/off the first transistor Q1.
The acceleration on-off module comprises a first resistor, an acceleration on-off switch unit and an acceleration off switch unit, wherein the first resistor is R1.
The D pole of the first transistor Q1 is connected with the positive pole B+ of the battery pack and the accelerating opening switch unit, the accelerating opening switch unit is connected with the signal output end of the driving chip and the first end of the first resistor R1, and the second end of the first resistor R1 is connected with the G pole of the first transistor Q1.
The specific process of accelerating the turn-on of the first transistor Q1 is that the driving chip detects that a load is inserted, after the signal output end of the driving signal outputs a signal to enable the accelerating turn-on switch unit to be turned on, a positive electrode B+ of the battery pack, the accelerating turn-on switch unit, the first resistor R1 and the G electrode of the first transistor Q1 form a passage, so that the potential of the G electrode of the first transistor Q1 is rapidly increased, the GS junction voltage of the first transistor Q1 is rapidly increased, the first transistor Q1 is turned on, and loss is reduced and efficiency is improved.
The S pole of the first transistor Q1 is connected with an acceleration turn-off switch unit and an output positive end P+, and the acceleration turn-off switch unit is connected with a signal output end of the driving chip and a first end of the first resistor R1.
The specific process of the acceleration turn-off first transistor Q1 is that after the signal output end of the driving chip outputs a signal to turn on the acceleration turn-off switch unit, a G pole of the first transistor Q1, a first resistor, the acceleration turn-off switch unit and an S pole of the first transistor Q1 form a passage, the original G pole residual potential of the first transistor Q1 is rapidly released through the first resistor R1, the G pole and the S pole of the first transistor Q1 are rapidly equipotential, and the first transistor Q1 is turned off, so that loss is reduced and efficiency is improved.
Embodiment two:
as shown in fig. 3, the turn-on accelerating switch unit includes a first diode and a second transistor, the first diode is D1, the second transistor is Q2, a first end of the first diode D1 is connected to a D pole of the first transistor Q1 and a positive pole b+ of the battery pack, a second end of the first diode D1 is connected to a first end of the second transistor Q2, a controlled end of the second transistor Q2 is connected to a signal output end of the driving chip, a second end of the second transistor Q2 is connected to a first end of the first resistor R1, and the first diode D1 is used for ensuring normal operation of the circuit.
When the battery pack starts to work, the driving chip detects that the load exists, the potential of the signal output end of the driving chip is gradually increased, the potential of the output positive end P+ is used as a reference, and the potential of the output positive end P+ is about 0V when the battery pack is in a power-off state and when the battery pack is started. Under the condition that the potential of the signal output end of the driving chip gradually rises, a passage is formed from the signal output end of the driving chip to the controlled end and the second end of the second transistor Q2, the first resistor R1 and the G pole of the first transistor Q1, so that current continuously passes through the controlled end and the second end of the second transistor Q2, the first end and the second end of the second transistor Q2 are conducted, and the acceleration turn-off switch unit belongs to an off state. After the controlled end and the second end of the second transistor Q2 are conducted, a passage is formed between the controlled end and the second end of the battery pack, the first resistor R1 and the G pole of the first transistor Q1, so that the G pole potential of the first transistor Q1 is rapidly increased, the GS junction voltage of the first transistor Q1 is rapidly increased, the first transistor Q1 is turned on, and loss is reduced and efficiency is improved.
In one example, the second transistor Q2 is made to BE a triode, the controlled terminal of the second transistor Q2 mentioned in the above description is a B pole, the first terminal of the second transistor Q2 is a C pole, and the third terminal of the second transistor Q2 is an E pole, so that in the case that the potential of the signal output terminal of the driving chip gradually increases, a path is formed from the signal output terminal of the driving chip to the Q2BE- > R1- > Q1G terminal, and thus, a current continuously flows through the Q2BE, and Q2 CE is turned on. After Q2 CE is conducted, a passage is formed at the end B+ -D1-Q2 CE-R1-Q1G, so that the potential of the end Q1G is rapidly increased, the voltage of the end Q1 GS is rapidly increased, the end Q1 is opened, and the opening loss of the end Q1 is reduced, so that the efficiency is improved.
It should be noted that, when the first transistor Q1 is turned on, the b+ and the p+ are equal, the B-point potential > the E-point potential > the b+ potential, and the first diode D1 is in the off state; if the first diode D1 is not present, the first transistor Q1 is pulled low to turn off, resulting in a circuit that does not work properly.
Embodiment III:
referring to fig. 3, the accelerated turn-off switching unit includes a third transistor Q3, a second terminal of the third transistor Q3 is connected to a first terminal of the first resistor R1, a controlled terminal of the third transistor Q3 is connected to a signal output terminal of the driving chip, a first terminal of the third transistor Q3 is connected to an S pole and an output positive terminal p+ of the first transistor Q1, and G poles and S poles of the first transistor Q1 are equipotential through turning on of the third transistor Q3 to turn off the first transistor Q1, thereby reducing loss and improving efficiency.
When the battery pack is normally shut down or short-circuited at the positive output end P+ and the negative output end P-, the potential of the signal output end of the driving chip is gradually reduced after the driving chip detects the shutdown signal, a passage is formed through the G pole of the first transistor Q1, the first resistor R1, the controlled end and the second end of the third transistor Q3 and the signal output end of the driving chip, so that current continuously flows through the controlled end and the second end of the third transistor Q3, the first end and the second end of the third transistor Q3 are conducted, and the on-off state of the switching unit is accelerated at the moment. After the third transistor Q3 is turned on, a path is formed between the G pole of the first transistor Q1, the first resistor R1, the accelerated turn-off switching unit, and the S pole of the first transistor Q1, and the original G pole residual potential of the first transistor Q1 is rapidly released through the first resistor R1, so that the G pole and the S pole of the first transistor Q1 are rapidly equipotential, and the first transistor Q1 is turned off, thereby reducing loss and improving efficiency.
In one example, the third transistor Q3 is made to BE a triode, the controlled terminal of the third transistor Q3 mentioned in the above description is a B pole, the first terminal of the third transistor Q3 is a C pole, and the third terminal of the third transistor Q3 is an E pole, so that the potential of the signal output terminal of the driving chip gradually decreases, a path is formed through Q1G- > R2- > Q3 BE- > R1- > afe_g, and thus Q3 BE continuously flows a current, and Q3 CE is turned on. After Q3 CE is conducted, a passage is formed between the end of the Q1G- > R1- > Q3 CE- > Q1S, the lower end of the R1 is in short circuit with the Q3 after the end of the Q1S is conducted, so that the equipotential between the lower end of the R1 and the end of the Q1S is caused, the original residual potential of the end of the Q1G is rapidly released through the R1, the equipotential between the end of the Q1G and the end of the Q1S is rapidly caused, namely the VGS of the Q1 is changed into 0V, the Q1 is turned off, the turn-off loss of the Q1 is reduced, and the efficiency is improved; and when in short circuit, the Q1 is ensured to be closed in a safety area, and the breakdown and burning of the Q1 are avoided.
In some embodiments, the controlled end of the second transistor Q2 and the controlled end of the third transistor Q3 are connected to the signal output end of the driving chip through a second resistor, where the second resistor is R2, and the second resistor R2 is used for limiting current of the branch circuit to prevent the components connected in series from being burned out due to excessive current.
It can be understood that the second transistor Q2 and/or the third transistor Q3 are field effect transistors or triodes, the field effect transistors are developed on the basis of triodes, the triodes control the output through the magnitude of the current, and the input consumes power; the field effect transistor is controlled to output through input voltage without consuming power, and in the circuit design, the field effect transistor or triode can be selected according to the requirement.
In one example, the second transistor Q2 and the third transistor Q3 are transistors, and the transistors can control a larger variation of the collector current with a small variation of the base current, so that the transistors are turned on rapidly to promote the first transistor to be turned on or off, thereby improving efficiency.
Embodiment four:
the accelerating turn-on and turn-off circuit further comprises a third resistor, wherein the third resistor is R3, a first end of the third resistor R3 is connected with a G pole of the first transistor Q1, a second end of the third resistor R3 is connected with an S pole of the first transistor Q1, the third resistor R3 can prevent static electricity from damaging the first transistor, and a fixed bias is provided to ensure effective turn-off of the first transistor Q1.
The first resistor R1 and/or the third resistor R3 are fixed-value resistors, adjustable resistors or potentiometers, the first resistor R1 is used for rapidly releasing the potential of the G pole primary residue of the first transistor Q1, and the descending speed of the G pole primary residue potential of the first transistor Q1 can be adjusted by adjusting the resistance value of the first resistor R1; the third resistor R3 is adjusted according to the parameter requirements of the circuit design to ensure the effective turn-off of the first transistor Q1.
In one example, the first resistor R1 and the third resistor R3 are both constant value resistors.
In some embodiments, the accelerating turn-on and turn-off circuit further comprises a fourth resistor, the fourth resistor is R4, a first end of the fourth resistor R4 is connected with a negative electrode B-of the battery pack, a second end of the fourth resistor R4 is connected with an output negative electrode P-, the fourth resistor R4 is a sampling resistor and used for collecting current in the circuit and the like, and a driving chip is convenient to output a corresponding control signal.
The driving chip is an AFE analog front end chip, and the AFE analog front end chip is specially used as a battery sampling chip in the BMS and is used for collecting the voltage and the temperature of a current core, detecting the turn-off signal of a battery pack, inserting a load or not and the like, so that the corresponding control signal can be conveniently output.
In summary, in the acceleration on and off circuit provided by the utility model, after the signal output end of the driving chip outputs a signal to enable the acceleration on switch unit to be turned on, a path is formed between the positive pole B+ of the battery pack, the acceleration on switch unit, the first resistor and the G pole of the first transistor, so that the G pole potential of the first transistor is rapidly increased, the GS junction voltage of the first transistor is rapidly increased, the first transistor is turned on, and loss is reduced and efficiency is improved; after the signal output end of the driving chip outputs a signal to enable the acceleration turn-off switch unit to be conducted, a passage is formed between the G pole of the first transistor, the first resistor and the S pole of the first transistor, the original residual potential of the G pole of the first transistor is rapidly released through the first resistor, the G pole and the S pole of the first transistor are rapidly equipotential, and the first transistor is turned off, so that loss is reduced and efficiency is improved.
The term "module" as used herein may be a software or hardware object executing on the computing system. The different components, modules, engines, and services described herein may be implemented as objects on the computing system. The apparatus and methods described herein may be implemented in software, but may also be implemented in hardware, which is within the scope of the present application.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the present application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.
In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically connected, electrically connected or can be communicated with each other; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.
Claims (10)
1. The accelerating on and off circuit is characterized by comprising a driving chip, a first transistor, a battery pack and an accelerating on and off module;
the acceleration on-off module comprises a first resistor, an acceleration on-off switch unit and an acceleration off switch unit;
the D pole of the first transistor is connected with the positive pole B+ of the battery pack and the accelerating opening switch unit, the accelerating opening switch unit is connected with the signal output end of the driving chip and the first end of the first resistor, and the second end of the first resistor is connected with the G pole of the first transistor;
after the signal output end of the driving chip outputs a signal to enable the accelerating opening switch unit to be conducted, a passage is formed among the positive pole B+ of the battery pack, the accelerating opening switch unit, the first resistor and the G pole of the first transistor, and the first transistor is opened;
the S electrode of the first transistor is connected with an acceleration turn-off switch unit and an output positive end P+, and the acceleration turn-off switch unit is connected with a signal output end of the driving chip and a first end of the first resistor;
after the signal output end of the driving chip outputs a signal to enable the acceleration turn-off switch unit to be turned on, a passage is formed among the G pole of the first transistor, the first resistor, the acceleration turn-off switch unit and the S pole of the first transistor, and the first transistor is turned off.
2. The circuit of claim 1, wherein the turn-on-accelerating switch unit comprises a first diode and a second transistor, wherein a first end of the first diode is connected to a D pole of the first transistor and a positive pole b+ of the battery pack, a second end of the first diode is connected to a first end of the second transistor, a controlled end of the second transistor is connected to a signal output end of the driving chip, and a second end of the second transistor is connected to a first end of the first resistor.
3. The circuit of claim 2, wherein the turn-on/off accelerating switch unit comprises a third transistor, a second end of the third transistor is connected to the first end of the first resistor, a controlled end of the third transistor is connected to the signal output end of the driving chip, and a first end of the third transistor is connected to the S pole and the output positive end p+.
4. The circuit of claim 3, wherein the controlled terminal of the second transistor and the controlled terminal of the third transistor are connected to the signal output terminal of the driving chip via a second resistor.
5. An accelerated turn-on and turn-off circuit according to claim 3, wherein the second transistor and/or third transistor is a field effect transistor or a triode.
6. The speed up on and off circuit of claim 5, wherein the second transistor and the third transistor are transistors.
7. The speed-up switching on and off circuit according to claim 3, further comprising a third resistor, a first terminal of the third resistor being connected to the G-pole of the first transistor, and a second terminal of the third resistor being connected to the S-pole of the first transistor.
8. The speed up switching on and off circuit according to claim 7, wherein the first resistor and/or the third resistor is a constant value resistor, an adjustable resistor or a potentiometer.
9. The speed up on and off circuit of claim 1 further comprising a fourth resistor, a first terminal of the fourth resistor connected to the negative terminal B-, of the battery pack, and a second terminal of the fourth resistor connected to the output negative terminal P-.
10. The accelerated turn-on and turn-off circuit of any one of claims 1-9, wherein the driver chip is an AFE analog front end chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223596449.8U CN219227575U (en) | 2022-12-28 | 2022-12-28 | Acceleration turn-on and turn-off circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223596449.8U CN219227575U (en) | 2022-12-28 | 2022-12-28 | Acceleration turn-on and turn-off circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219227575U true CN219227575U (en) | 2023-06-20 |
Family
ID=86739586
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223596449.8U Active CN219227575U (en) | 2022-12-28 | 2022-12-28 | Acceleration turn-on and turn-off circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219227575U (en) |
-
2022
- 2022-12-28 CN CN202223596449.8U patent/CN219227575U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11889863B2 (en) | Voltage output circuit and electronic cigarette | |
| CN106026277A (en) | Controllable battery charging circuit and charger | |
| WO2021258367A1 (en) | Control circuit, battery management system, and electrochemical device | |
| CN216929868U (en) | Input protecting circuit for anti-impact MOS tube | |
| CN206619904U (en) | A kind of battery reversal connection leakproof current circuit | |
| CN217335186U (en) | Dual-power automatic switching circuit and dual-power supply circuit | |
| CN111009950A (en) | Overcharge protection circuit and charger | |
| CN219227575U (en) | Acceleration turn-on and turn-off circuit | |
| WO2022110608A1 (en) | Direct current high-power power supply soft start circuit and method | |
| CN212343375U (en) | Novel BMS accuse negative pole charge-discharge drive control circuit | |
| CN211183521U (en) | Dual-battery selection circuit and electronic device | |
| CN102545163A (en) | Battery discharge protection circuit and LED (Light Emitting Diode) lamp | |
| CN211880123U (en) | Output protection device of charger | |
| CN211981480U (en) | Short circuit is turn-off circuit and lithium electricity battery package with higher speed | |
| CN212627197U (en) | Control circuit for turning off discharge output during lithium battery charging | |
| CN113991822A (en) | Photovoltaic panel charge-discharge application circuit based on BUCK circuit | |
| CN221177272U (en) | Multi-string lithium battery protection plate positive control switching tube quick turn-off circuit | |
| CN111555397A (en) | Control circuit for turning off discharge output during lithium battery charging | |
| CN217883215U (en) | Intelligent toilet lid slowly falls device | |
| CN218386844U (en) | Energy feedback protection circuit for motor controller of scooter | |
| CN206023280U (en) | Over-discharge protection circuit | |
| CN221010006U (en) | Power supply clamping circuit | |
| CN117411159B (en) | Intelligent solar charging control circuit | |
| CN219394447U (en) | Driving circuit suitable for lithium battery protection board and lithium battery | |
| CN207766617U (en) | A kind of velocitron control driving power |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |