CN219477618U - Pure hardware control circuit for switching on and switching off output end of battery pack - Google Patents
Pure hardware control circuit for switching on and switching off output end of battery pack Download PDFInfo
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- CN219477618U CN219477618U CN202223599381.9U CN202223599381U CN219477618U CN 219477618 U CN219477618 U CN 219477618U CN 202223599381 U CN202223599381 U CN 202223599381U CN 219477618 U CN219477618 U CN 219477618U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
The utility model relates to the technical field of electronic circuits, and particularly discloses a pure hardware control circuit for switching on and off an output end of a battery pack, which comprises an activation port, a key, an anode output end of the battery pack, an IC output end, a primary switch unit, a secondary switch unit, a tertiary switch unit and a discharge MOS (metal oxide semiconductor); the activation port is connected with the first end of the key and the controlled end of the primary switch unit, and the second end of the key is connected with the positive electrode output end of the battery pack; the first end of the first-stage switch unit is grounded, and the second end of the first switch unit is connected with the positive electrode output end of the battery pack and the controlled end of the second-stage switch unit; the first end of the secondary switch unit is grounded, and the second end of the secondary switch unit is connected with the IC output end and the controlled end of the tertiary switch unit; the first end of the three-stage switch unit is grounded, and the second end of the three-stage switch unit is connected with the IC output end and the discharge MOS; the utility model can control the on-off of the output of the battery pack in a pure hardware mode, so that a tool in butt joint with the battery pack does not need to consider the problem of low power consumption, and system software is simplified.
Description
Technical Field
The utility model relates to the technical field of electronic circuits, in particular to a pure hardware control circuit for switching on and off an output end of a battery pack.
Background
Currently, a plurality of lithium battery packs in the market are widely applied, and in many applications, a pure hardware scheme is adopted to manage and protect the charging and discharging of battery cells.
In the common hardware protection schemes in the market, the whole output voltage of the battery pack is always continuous, and the battery pack is always in an assembled state during normal use of a tool in butt joint with the battery pack, so that the whole system is required to perform sleep low-power consumption processing, otherwise, the battery pack is very fast exhausted, and if combined with program processing, the system software is complex and the reliability is not high.
As shown in fig. 1, the battery pack protection scheme is a common pure hardware battery pack protection scheme, when the battery pack is normal, the DO pin continuously outputs a high level, so that the discharging MOS is always in a conducting state, and the battery pack continuously supplies power to the outside. When the battery pack is used for a complete machine tool, the system needs to perform low-power sleep processing, otherwise the battery pack is not durable due to the fact that the power consumption is too fast, the service life is low, and the whole system is complex in software logic and low in reliability.
Disclosure of Invention
Aiming at the problems of high power consumption of the battery pack, complex system software and the like, the utility model provides a pure hardware control circuit for switching on and off the output end of the battery pack, which can control the switching on and off of the output of the battery pack in a pure hardware mode, so that a tool for butting the battery pack does not need to consider the problem of low power consumption, and the system software is simplified.
In order to solve the technical problems, the utility model provides the following specific scheme:
a pure hardware control circuit for switching on and off the output end of a battery pack comprises an activation port, a key, an anode output end of the battery pack, an IC output end, a primary switch unit, a secondary switch unit, a tertiary switch unit and a discharge MOS;
the activation port is connected with the first end of the key and the controlled end of the primary switch unit, and the second end of the key is connected with the positive electrode output end of the battery pack; the first end of the first-stage switch unit is grounded, and the second end of the first switch unit is connected with the positive electrode output end of the battery pack and the controlled end of the second-stage switch unit; the first end of the secondary switch unit is grounded, and the second end of the secondary switch unit is connected with the IC output end and the controlled end of the tertiary switch unit; the first end of the three-stage switch unit is grounded, and the second end of the three-stage switch unit is connected with the IC output end and the discharge MOS.
In some embodiments, the three-stage switching unit includes a first transistor, a second transistor, and a third transistor;
the controlled end of the first transistor is connected with the second end of the second-stage switch unit and the IC output end, the first end of the first transistor is grounded, and the second end of the first transistor is connected with the IC output end, the controlled end of the second transistor and the controlled end of the third transistor; the first end of the second transistor is connected with the IC output end, the first end of the third transistor is grounded, the second end of the second transistor and the second end of the third transistor are connected with the discharge MOS, and the second transistor is turned on or turned off through the first transistor, so that the second transistor is turned on or the third transistor is turned on, and the on-off control of the battery pack output end is realized.
In some embodiments, the first transistor, the second transistor and/or the third transistor are field effect transistors or triodes, the field effect transistors are developed on the basis of triodes, and the triodes control output through the magnitude of current, and 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 some embodiments, the three-stage switching unit further includes a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, and a sixth resistor;
the first end of the first resistor is connected with the output end of the IC, the second end of the first resistor is connected with the controlled end of the first transistor and the first end of the second resistor, and the second end of the second resistor is connected with the first end of the first transistor;
the first end of the third resistor is connected with the output end of the IC and the first end of the second transistor, the second end of the third resistor is connected with the controlled end of the second transistor and the first end of the fourth resistor, and the second end of the fourth resistor is connected with the second end of the first transistor and the controlled end of the third transistor;
the first end of the fifth resistor is connected with the second end of the second transistor, the second end of the fifth resistor is connected with the second end of the third transistor and the first end of the sixth resistor, the second end of the sixth resistor is connected with the G pole of the discharge MOS, and the resistors are used for ensuring stable operation of the first transistor, the second transistor and the third transistor.
In some embodiments, the first-stage switching unit includes a fourth transistor, a controlled terminal of the fourth transistor is connected to the activation port, a first terminal of the fourth transistor is grounded, a second terminal of the fourth transistor is connected to the positive output terminal of the battery pack and the controlled terminal of the second-stage switching unit, and the switching function of the first-stage switching unit is realized through the fourth transistor.
In some embodiments, the primary switching unit further comprises a seventh resistor, an eighth resistor, and a ninth resistor;
the first end of the seventh resistor is connected with the activation port, the second end of the seventh resistor is connected with the controlled end of the fourth transistor and the first end of the eighth resistor, the second end of the eighth resistor is connected with the first end of the fourth transistor, the first end of the ninth resistor is connected with the positive output end of the battery pack, the second end of the ninth resistor is connected with the second end of the fourth transistor and the controlled end of the secondary switch unit, and stable operation of the fourth transistor is ensured through the seventh resistor, the eighth resistor and the ninth resistor.
In some embodiments, the first stage switching unit further includes a first zener diode, a first end of the first zener diode is connected to the controlled end of the fourth transistor, and a second end of the first zener diode is connected to the first end of the fourth transistor, so that the fourth transistor is prevented from being broken down, and use stability of the first stage switching unit is ensured.
In some embodiments, the second-stage switching unit includes a fifth transistor, a controlled terminal of the fifth transistor is connected to the second terminal of the first-stage switching unit, a first terminal of the fifth transistor is grounded, a second terminal of the fifth transistor is connected to the IC output terminal and the controlled terminal of the third-stage switching unit, and a switching function of the second-stage switching unit is realized through the fifth transistor.
In some embodiments, the second-stage switch unit further includes a tenth resistor and a first capacitor, a first end of the tenth resistor is connected to a second end of the first-stage switch unit, a second end of the tenth resistor is connected to a first end of the first capacitor and a controlled end of the fifth transistor, and a second end of the first capacitor is grounded to realize a fast-switching and slow-switching function of the circuit.
In some embodiments, the second-stage switching unit further includes a second zener diode, a first end of the second zener diode is connected to a second end of the tenth resistor, a second end of the second zener diode is connected to a controlled end of the fifth transistor, and the second zener diode can prevent the first capacitor from being damaged due to reverse connection of the power supply.
The pure hardware control circuit for switching on and off the output end of the battery pack can control the switching on and off of the output end of the battery pack through the simple key switch, so that a tool in butt joint with the battery pack does not need to consider the problem of low power consumption, system software is simplified, and reliability is improved.
Drawings
FIG. 1 is a pure hardware battery pack protection scheme mentioned in the background;
FIG. 2 is a block diagram of a pure hardware control circuit provided in an embodiment of the present utility model;
FIG. 3 is a schematic circuit diagram of a three stage switching unit provided in an embodiment of the present utility model;
FIG. 4 is a logic diagram of a three stage switching unit provided in an embodiment of the present utility model;
FIG. 5 is a schematic circuit diagram of a pure hardware control circuit provided in an embodiment of the present utility model;
FIG. 6 is a logic diagram of a primary switch unit according to an embodiment of the present utility model;
fig. 7 is a logic relationship diagram of a two-stage switching unit 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, a pure hardware control circuit for switching on and off the output end of a battery pack comprises an activation port, a key, an anode output end of the battery pack, an IC output end, a primary switch unit, a secondary switch unit, a tertiary switch unit and a discharge MOS; the activation port is connected with the first end of the key and the controlled end of the primary switch unit, and the second end of the key is connected with the positive electrode output end of the battery pack; the first end of the first-stage switch unit is grounded, and the second end of the first switch unit is connected with the positive electrode output end of the battery pack and the controlled end of the second-stage switch unit; the first end of the secondary switch unit is grounded, and the second end of the secondary switch unit is connected with the IC output end and the controlled end of the tertiary switch unit; the first end of the three-stage switch unit is grounded, and the second end of the three-stage switch unit is connected with the IC output end and the discharge MOS.
According to the pure hardware control circuit for switching on and off the output end of the battery pack, the switching on and off of the output end of the battery pack can be controlled through the simple key switch, so that a tool in butt joint with the battery pack does not need to consider the problem of low power consumption, system software is simplified, and reliability is improved.
Embodiment one:
a pure hardware control circuit for switching ON and OFF the output end of a battery pack comprises an activation port, a key, an anode output end of the battery pack, an IC output end, a primary switch unit, a secondary switch unit, a tertiary switch unit and a discharge MOS, wherein the activation port is ON/OFF, the key is S1, the anode output end of the battery pack is P+/C+, and the IC output end outputs DO signals.
The activation port ON/OFF is connected with a first end of a key S1 and a controlled end of the primary switch unit, and a second end of the key S1 is connected with an output end P+/C+ of the positive electrode of the battery pack; the first end of the first-stage switch unit is grounded, and the second end of the first switch unit is connected with the positive electrode output end P+/C+ of the battery pack and the controlled end of the second-stage switch unit; the first end of the secondary switch unit is grounded, and the second end of the secondary switch unit is connected with the IC output end DO and the controlled end of the tertiary switch unit; the first end of the three-stage switch unit is grounded, and the second end of the three-stage switch unit is connected with the IC output end DO and the discharge MOS.
Specifically, the ON/OFF of the activation port is connected with the positive electrode output end P+/C+ of the battery pack through a key S1, and the ON/OFF of the activation port obtains a corresponding high level or low level through the opening and closing of the key S1; and the IC output end is provided with a BMS hardware protection IC in the application scheme and is used for detecting the state of the battery core, such as current, voltage, temperature and the like, outputting DO signals to the discharge MOS and controlling the on and off of the discharge MOS.
In the pure hardware control circuit for switching ON and OFF the output end of the battery pack, when the key S1 is closed, an ON/OFF signal of an activation port is short-circuited to the P+/C+ output end of the positive electrode of the battery pack and is pulled up to a high level, so that the primary switch unit is conducted; when the key S1 is turned off, the primary switch unit is in an off state.
For the secondary switch unit, the connection and disconnection of the secondary switch unit are far away from the same as that of the primary switch unit, the output end of the IC outputs a DO signal as a high level signal, when the second end of the primary switch unit is at a high level, the second end of the secondary switch unit is at a low level, otherwise, when the second end of the primary switch unit is at a low level, the second end of the secondary switch unit is at a high level.
For the three-stage switch unit, the DO signal is output by the IC output end, so when the battery pack is in a normal state, the DO signal is in a high level, and when the second end of the two-stage switch unit is in a high level, the three-stage switch unit is in a conducting state, and the DO signal is output to the discharge MOS; when the second end of the secondary switch unit is at a low level, the tertiary switch unit is in an off state.
As can be seen from the above description, the external key S1 can control the switch of the discharging MOS, and finally realize the on-off of the output end of the battery pack.
Embodiment two:
as shown in fig. 3, the three-stage switching unit includes a first transistor Q1, a second transistor Q2, and a third transistor Q3.
The controlled end of the first transistor Q1 is connected with the second end of the second-stage switch unit and the IC output end, the first end of the first transistor Q1 is grounded, and the second end of the first transistor Q1 is connected with the IC output end, the controlled end of the second transistor Q2 and the controlled end of the third transistor Q3; the first end of the second transistor Q2 is connected with the output end of the IC, the first end of the third transistor Q3 is grounded, the second end of the second transistor Q2 and the second end of the third transistor Q3 are connected with the discharge MOS, and the second transistor Q2 is turned on or the third transistor Q3 is turned on by the on or off of the first transistor Q1, so that the on-off control of the output end of the battery pack is realized.
Specifically, since the DO signal is output from the IC output terminal, when the battery pack is in a normal state, the DO signal is at a high level, and when the second terminal of the secondary switch unit is at a high level, the first transistor Q1 is in a conductive state, the second terminal of the first transistor Q1 is pulled down to ground, so that the second transistor Q2 is in a conductive state, and the D0 signal is output to the discharge MOS, referring to fig. 3, i.e., V (DO) =v (DSG), so that V (DSG) is at a high level. Conversely, when the second terminal of the two-stage switching unit is at a low level, the first transistor Q1 is in an off state, the second terminal of the first transistor Q1 is at a high level, the second transistor Q2 is also in an off state, the third transistor Q3 is in an on state, the DSG signal is connected to the ground terminal and at a low level, and the logic relationship is shown in fig. 4.
From the above description, the external key S1 can control the DSG signal, so as to control the switch of the discharging MOS, and finally realize the on-off of the output end of the battery pack. The specific function is that when the key S1 is closed, the DSG signal is high level, the discharging MOS is conducted, and the battery pack can output voltage to the outside for supplying power; when the key S1 is turned off, the DSG signal is at a low level, the discharge MOS is turned off, and the battery pack output terminal is turned off, and cannot provide voltage output to the outside.
In some embodiments, the first transistor Q1, the second transistor Q2, and/or the third transistor Q3 are field effect transistors or transistors, the field effect transistors are developed on the basis of transistors, and the transistors control output through the magnitude of current, and 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.
Referring to fig. 3, the first transistor Q1, the second transistor Q2, and the third transistor Q3 are shown as field effect transistors.
In one example, the three-stage switching unit further includes a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, and a sixth resistor, where the first resistor is R1, the second resistor is R2, the third resistor is R3, the fourth resistor is R4, the fifth resistor is R5, and the sixth resistor is R6.
The first end of the first resistor R1 is connected with the output end of the IC, the second end of the first resistor R1 is connected with the controlled end of the first transistor Q1 and the first end of the second resistor R2, and the second end of the second resistor R2 is connected with the first end of the first transistor Q1; the first end of the third resistor R3 is connected with the output end of the IC and the first end of the second transistor Q2, the second end of the third resistor R3 is connected with the controlled end of the second transistor Q2 and the first end of the fourth resistor R4, and the second end of the fourth resistor R4 is connected with the second end of the first transistor Q1 and the controlled end of the third transistor Q3; the first end of the fifth resistor R5 is connected to the second end of the second transistor Q2, the second end of the fifth resistor R5 is connected to the second end of the third transistor Q3 and the first end of the sixth resistor R6, the second end of the sixth resistor R6 is connected to the G pole of the discharge MOS, and by providing the resistors, stable operation of the first transistor Q1, the second transistor Q2 and the third transistor Q3 is ensured.
Embodiment III:
as shown in fig. 5, the first-stage switching unit includes a fourth transistor Q4, where a controlled end of the fourth transistor Q4 is connected to the ON/OFF port, a first end of the fourth transistor Q4 is grounded, a second end of the fourth transistor Q4 is connected to the positive output end p+/c+ of the battery pack and a controlled end of the second-stage switching unit, and a switching function of the first-stage switching unit is implemented through the fourth transistor Q4.
Specifically, when the key S1 is closed, the ON/OFF signal of the activation port is shorted to the positive output terminal p+/c+ of the battery pack and pulled up to a high level, the fourth transistor Q4 is in a conducting state, the first terminal and the second terminal of the fourth transistor are in a conducting state, and the second terminal is pulled down to ground, that is, at a low level; conversely, when the key S1 is turned off, the fourth transistor Q4 is turned off, and the fourth transistor Q4 is pulled high by the positive output terminal p+/c+ of the battery pack, and the switch logic relationship thereof is shown in fig. 6.
In some embodiments, the first stage switching unit further includes a seventh resistor, an eighth resistor, and a ninth resistor, the seventh resistor being R7, the eighth resistor being R8, the ninth resistor being R9.
The first end of the seventh resistor R7 is connected with the ON/OFF of the activation port, the second end of the seventh resistor R7 is connected with the controlled end of the fourth transistor Q4 and the first end of the eighth resistor R8, the second end of the eighth resistor R8 is connected with the first end of the fourth transistor Q4, the first end of the ninth resistor R9 is connected with the positive output end P+/C+ of the battery pack, the second end of the ninth resistor R9 is connected with the second end of the fourth transistor Q4 and the controlled end of the second-stage switch unit, and stable operation of the fourth transistor Q4 is ensured through the seventh resistor R7, the eighth resistor R8 and the ninth resistor R9.
Further, the first-stage switching unit further comprises a first zener diode, the first zener diode is ZD1, a first end of the first zener diode ZD1 is connected with a controlled end of the fourth transistor Q4, a second end of the first zener diode ZD1 is connected with a first end of the fourth transistor Q4, the fourth transistor Q4 is prevented from being broken down, and use stability of the first-stage switching unit is ensured.
Embodiment four:
as shown in fig. 5, the second-stage switching unit includes a fifth transistor Q5, a controlled end of the fifth transistor Q5 is connected to a second end of the first-stage switching unit, a first end of the fifth transistor Q5 is grounded, a second end of the fifth transistor Q5 is connected to an output end of the IC and the controlled end of the third-stage switching unit, and a switching function of the second-stage switching unit is implemented through the fifth transistor Q5.
The IC output outputs a DO signal as a high level signal, and when the second end of the primary switch unit is at a high level, the second end of the fifth transistor Q5 is at a low level, whereas when the second end of the primary switch unit is at a low level, the second end of the fifth transistor Q5 is at a high level, and the specific logic relationship is referred to fig. 7.
In some embodiments, the second-stage switching unit further includes a tenth resistor and a first capacitor, the tenth resistor is R10, the first capacitor is C1, a first end of the tenth resistor R10 is connected to a second end of the first-stage switching unit, a second end of the tenth resistor R10 is connected to a first end of the first capacitor C1 and a controlled end of the fifth transistor Q5, and a second end of the first capacitor C1 is grounded, so as to realize a fast switching function of the circuit.
Further, the second-stage switching unit further includes a second zener diode, the second zener diode is ZD2, a first end of the second zener diode ZD2 is connected to a second end of the tenth resistor R10, a second end of the second zener diode ZD2 is connected to a controlled end of the fifth transistor Q5, and the second zener diode ZD2 can prevent the first capacitor C1 from being damaged due to reverse connection of the power supply.
The application provides a pure hardware control circuit to battery package output break-make can also realize the function of fast switch slow switch, by ninth resistance R9, tenth resistance R10 and first electric capacity C1 constitute, the main effect is, when general button S1 break-make, because external interference or contact elasticity problem, mechanical contact can follow-up collision several times, lead to DSG signal to suddenly rise and suddenly fall, discharge MOS switches on repeatedly and stops several times, battery package output also can break-make several times, take place the shake when finally causing whole instrument to switch on and off, the time is the mS level. This partial line can well avoid this situation, and is specifically as follows: when the key S1 is closed, the fourth transistor Q4 is turned on, the second end of the fourth transistor Q4 is shorted to ground, the first capacitor C1 is rapidly discharged through the tenth resistor R10, the resistance value of the tenth resistor R10 is relatively small, the fifth transistor Q5 is immediately in an off state, DSG is high level, and the battery pack output is rapidly turned on; when the key S1 is turned off, the p+/c+ terminal is slowly charged through the ninth resistor R9, the resistance value of the ninth resistor R9 is relatively large, after the first capacitor C1 is saturated, the fifth transistor Q5 is turned on, the second terminal of the fifth transistor Q5 is pulled down, the DSG signal is at a low level, and the battery pack is slowly turned off for output. This function can be achieved by adjusting the resistance of the ninth resistor R9, the tenth resistor R10, and the capacitance of the first capacitor C1. The realization effect is, press button S1 and then open battery package output fast, and break button S1 slowly closes battery package output, when can effectually avoid the switch break-make, discharge MOS and the frequent break-make of battery package.
In summary, the pure hardware control circuit for switching on and off the output end of the battery pack provided by the utility model can control the switching on and off of the output end of the battery pack through a simple key switch, so that a tool for butt joint with the battery pack does not need to consider the problem of low power consumption, system software is simplified, and reliability 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 pure hardware control circuit for switching on and off the output end of the battery pack is characterized by comprising an activation port, a key, an anode output end of the battery pack, an IC output end, a primary switch unit, a secondary switch unit, a tertiary switch unit and a discharge MOS;
the activation port is connected with the first end of the key and the controlled end of the primary switch unit, and the second end of the key is connected with the positive electrode output end of the battery pack; the first end of the first-stage switch unit is grounded, and the second end of the first switch unit is connected with the positive electrode output end of the battery pack and the controlled end of the second-stage switch unit; the first end of the secondary switch unit is grounded, and the second end of the secondary switch unit is connected with the IC output end and the controlled end of the tertiary switch unit; the first end of the three-stage switch unit is grounded, and the second end of the three-stage switch unit is connected with the IC output end and the discharge MOS.
2. The pure hardware control circuit for switching on and off a battery pack output according to claim 1, wherein the three-stage switching unit comprises a first transistor, a second transistor and a third transistor;
the controlled end of the first transistor is connected with the second end of the second-stage switch unit and the IC output end, the first end of the first transistor is grounded, and the second end of the first transistor is connected with the IC output end, the controlled end of the second transistor and the controlled end of the third transistor; the first end of the second transistor is connected with the IC output end, the first end of the third transistor is grounded, and the second end of the second transistor and the second end of the third transistor are connected with the discharge MOS.
3. The pure hardware control circuit for switching on and off a battery pack output according to claim 2, wherein the first transistor, the second transistor and/or the third transistor are field effect transistors or triodes.
4. The pure hardware control circuit for switching on and off the output end of a battery pack according to claim 2, wherein the three-stage switch unit further comprises a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor and a sixth resistor;
the first end of the first resistor is connected with the output end of the IC, the second end of the first resistor is connected with the controlled end of the first transistor and the first end of the second resistor, and the second end of the second resistor is connected with the first end of the first transistor;
the first end of the third resistor is connected with the output end of the IC and the first end of the second transistor, the second end of the third resistor is connected with the controlled end of the second transistor and the first end of the fourth resistor, and the second end of the fourth resistor is connected with the second end of the first transistor and the controlled end of the third transistor;
the first end of the fifth resistor is connected with the second end of the second transistor, the second end of the fifth resistor is connected with the second end of the third transistor and the first end of the sixth resistor, and the second end of the sixth resistor is connected with the G pole of the discharge MOS.
5. The pure hardware control circuit for switching on and off a battery pack output terminal according to claim 1, wherein the primary switch unit comprises a fourth transistor, a controlled terminal of the fourth transistor is connected with the activation port, a first terminal of the fourth transistor is grounded, and a second terminal of the fourth transistor is connected with a battery pack positive electrode output terminal and a controlled terminal of the secondary switch unit.
6. The pure hardware control circuit for switching on and off a battery pack output according to claim 5, wherein the primary switch unit further comprises a seventh resistor, an eighth resistor and a ninth resistor;
the first end of the seventh resistor is connected with the activation port, the second end of the seventh resistor is connected with the controlled end of the fourth transistor and the first end of the eighth resistor, the second end of the eighth resistor is connected with the first end of the fourth transistor, the first end of the ninth resistor is connected with the positive output end of the battery pack, and the second end of the ninth resistor is connected with the second end of the fourth transistor and the controlled end of the secondary switch unit.
7. The hardware-only control circuit for switching on and off an output terminal of a battery pack according to claim 6, wherein the primary switching unit further comprises a first zener diode, a first terminal of the first zener diode is connected to the controlled terminal of the fourth transistor, and a second terminal of the first zener diode is connected to the first terminal of the fourth transistor.
8. The pure hardware control circuit for switching on and off a battery pack output according to claim 1, wherein the secondary switch unit comprises a fifth transistor, a controlled terminal of the fifth transistor is connected to a second terminal of the primary switch unit, a first terminal of the fifth transistor is grounded, and a second terminal of the fifth transistor is connected to the IC output terminal and the controlled terminal of the tertiary switch unit.
9. The hardware-only control circuit for switching on and off an output terminal of a battery pack according to claim 8, wherein the secondary switch unit further comprises a tenth resistor and a first capacitor, a first terminal of the tenth resistor is connected to a second terminal of the primary switch unit, a second terminal of the tenth resistor is connected to a first terminal of the first capacitor and a controlled terminal of the fifth transistor, and a second terminal of the first capacitor is grounded.
10. The hardware-only control circuit for switching on and off an output terminal of a battery pack according to claim 9, wherein the two-stage switching unit further comprises a second zener diode, a first terminal of the second zener diode is connected to a second terminal of the tenth resistor, and a second terminal of the second zener diode is connected to a controlled terminal of the fifth transistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223599381.9U CN219477618U (en) | 2022-12-29 | 2022-12-29 | Pure hardware control circuit for switching on and switching off output end of battery pack |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223599381.9U CN219477618U (en) | 2022-12-29 | 2022-12-29 | Pure hardware control circuit for switching on and switching off output end of battery pack |
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| CN219477618U true CN219477618U (en) | 2023-08-04 |
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| CN202223599381.9U Active CN219477618U (en) | 2022-12-29 | 2022-12-29 | Pure hardware control circuit for switching on and switching off output end of battery pack |
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| CN (1) | CN219477618U (en) |
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