CN214412327U - On-off control circuit of multi-path discharge loop and energy storage equipment - Google Patents
On-off control circuit of multi-path discharge loop and energy storage equipment Download PDFInfo
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- CN214412327U CN214412327U CN202022997147.6U CN202022997147U CN214412327U CN 214412327 U CN214412327 U CN 214412327U CN 202022997147 U CN202022997147 U CN 202022997147U CN 214412327 U CN214412327 U CN 214412327U
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- 238000007599 discharging Methods 0.000 description 20
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Abstract
This application is applicable to the discharge control technical field of power, provides an on-off control circuit and energy storage equipment in multichannel discharge circuit, and on-off control circuit includes: the system comprises a plurality of switch modules, a first switch control module and a second switch control module; the switch modules are respectively connected in the multi-path discharge circuit and used for controlling the discharge circuit where the switch modules are located to be switched on when the switch modules are switched on and controlling the discharge circuit where the switch modules are located to be switched off when the switch modules are switched off; the control end of the first switch control module is connected with the plurality of switch modules and used for outputting a first state signal or a second state signal; each control end of the second switch control module is respectively connected with one switch module and used for outputting a switching-on control signal or a switching-off control signal; the switch module is switched on when receiving the first state signal and the switching-on control signal, switched off when receiving the first state signal and the switching-off control signal, and switched off when receiving the second state signal. The on-off control circuit is simple in structure and low in cost.
Description
Technical Field
The application belongs to the technical field of discharge control of power supplies, and particularly relates to an on-off control circuit of a multi-path discharge loop and energy storage equipment.
Background
In order to facilitate the discharge management of the power supply, a switch module is usually disposed in a discharge loop of the power supply, and the on-off of the discharge loop is controlled by the switch module, and the on-off of the switch module is usually controlled by a power supply monitoring chip. Because the power supply monitoring chip usually has only one switch control end, when on-off control is required to be performed on the multiple discharging loops respectively, a power supply monitoring chip needs to be arranged for each switch module in each discharging loop, that is, the existing on-off control circuit of the multiple discharging loops needs a plurality of power supply monitoring chips, which results in a complex circuit structure and higher cost, and is difficult to realize synchronous control on the multiple discharging loops.
SUMMERY OF THE UTILITY MODEL
In view of this, the embodiment of the present application provides an on-off control circuit for a multi-path discharge loop and an energy storage device, so as to solve the technical problems that the existing on-off control circuit for a multi-path discharge loop is complex in circuit structure, high in cost, and difficult to implement synchronous control on the multi-path discharge loop.
In a first aspect, an embodiment of the present application provides an on-off control circuit for a multi-path discharge loop, including:
the system comprises a plurality of switch modules, a first switch control module and a second switch control module;
the switch modules are respectively connected in the multi-path discharge loops and used for controlling the discharge loops where the switch modules are located to be switched on when the switch modules are switched on and controlling the discharge loops where the switch modules are located to be switched off when the switch modules are switched off;
the control end of the first switch control module is connected with the plurality of switch modules, and the first switch control module is used for outputting a first state signal or a second state signal through the control end of the first switch control module;
each control end of the second switch control module is connected with one switch module, and the second switch control module is used for outputting a switching-on control signal or a switching-off control signal through the control end of the second switch control module;
the switch module is switched on when receiving the first state signal and the switching-on control signal, switched off when receiving the first state signal and the switching-off control signal, and switched off when receiving the second state signal.
Optionally, the switch module includes: a unidirectional conductive unit and a first switching unit;
the output end of the one-way conductive unit is connected with the control end of the first switch control module, the input end of the one-way conductive unit is connected with the first controlled end of the first switch unit, the second controlled end of the first switch unit is connected with one control end of the second switch control module, the input end of the first switch unit is connected with the anode of a first power supply in the discharge loop, and the output end of the first switch unit is used for being connected with a load in the discharge loop.
Optionally, the first switch control module includes: a power supply monitor and an auxiliary turn-off unit;
the switch control pin of the power supply monitor is connected with the signal input end of the auxiliary turn-off unit, and the signal output end of the auxiliary turn-off unit is the control end of the first switch control module.
Optionally, the first switch unit includes: the circuit comprises a first resistor, a second resistor, a first switching tube, a third resistor, a second switching tube, a fourth resistor and a fifth resistor;
the first end of the first resistor and the first conducting end of the first switch tube are connected together to be used as the input end of the first switch unit, the second end of the first resistor, the first end of the second resistor and the first end of the third resistor are connected in common, the second end of the second resistor is connected with the controlled end of the first switch tube, the second conducting end of the first switch tube is the output end of the first switch unit, the second end of the third resistor is connected with the first conducting end of the second switch tube, the controlled end of the second switch tube, the second end of the fourth resistor and the first end of the fifth resistor are connected together as the first controlled end of the first switch unit, the first end of the fourth resistor is a second controlled end of the first switch unit, and the second end of the fifth resistor and the second conducting end of the second switch tube are connected to the ground in common.
Optionally, the auxiliary turn-off unit includes: the sixth resistor, the third switch tube, the fourth switch tube, the seventh resistor and the eighth resistor;
the first end of sixth resistance is connected with the output of second power, the second end of sixth resistance the controlled terminal of third switch tube reaches the first end of leading of fourth switch tube connects altogether, the first end of leading of third switch tube does the signal output part of supplementary shutoff unit, the second end of leading of third switch tube the second end of leading of fourth switch tube reaches the second end of eighth resistance connects altogether in ground, the controlled terminal of fourth switch tube the second end of seventh resistance reaches the first end of eighth resistance connects altogether, the first end of seventh resistance does the signal input part of supplementary shutoff unit.
Optionally, the second switch control module includes a first controller;
and a plurality of output pins of the first controller are a plurality of control ends of the second switch control module respectively.
Optionally, the unidirectional conducting unit comprises a diode or thyristor.
Optionally, the first switching tube is an NMOS tube or an NPN-type triode; and/or
The second switch tube is an NMOS tube or an NPN type triode.
Optionally, the third switching tube is an NMOS tube or an NPN-type triode; and/or
The fourth switching tube is an NMOS tube or an NPN type triode.
In a second aspect, an embodiment of the present application provides an energy storage device, which includes a battery assembly and a multi-path discharge loop connected to the battery assembly, and the energy storage device further includes the on-off control circuit according to the first aspect.
The on-off control circuit of the multi-path discharging loop and the energy storage device have the following beneficial effects:
according to the on-off control circuit of the multi-path discharge loop, the control end of the first switch control module is connected with the switch modules which are respectively connected in different discharge loops, the second switch control module comprises the control ends, and each control end is respectively connected with one switch module, so that the on-off of each discharge loop can be independently controlled through the combination of the first switch control module and the second switch control module, and the synchronous off control of all the discharge loops can be realized; and because the whole on-off control circuit only needs one first switch control module and one second switch control module except the switch module, the circuit structure is simple, and the cost is lower.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
Fig. 1 is a schematic structural diagram of a module of an on-off control circuit of a multi-path discharge circuit according to an embodiment of the present disclosure;
fig. 2 is a schematic structural diagram of a module of an on-off control circuit of a multi-path discharge circuit according to another embodiment of the present disclosure;
fig. 3 is a schematic circuit structure diagram of an on-off control circuit of a multi-path discharge circuit according to an embodiment of the present disclosure.
Detailed Description
In the following description, for purposes of explanation and not limitation, specific details are set forth, such as particular system structures, techniques, etc. in order to provide a thorough understanding of the embodiments of the present application. It will be apparent, however, to one skilled in the art that the present application may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present application with unnecessary detail.
It should be understood that the term "and/or" as used in this specification and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items. Furthermore, in the description of the present application and the appended claims, the terms "first," "second," "third," and the like are used for distinguishing between descriptions and not necessarily for describing or implying relative importance.
It should also be appreciated that reference throughout this specification to "one embodiment" or "some embodiments," or the like, means that a particular feature, structure, or characteristic described in connection with the embodiment is included in one or more embodiments of the present application. Thus, appearances of the phrases "in one embodiment," "in some embodiments," "in other embodiments," or the like, in various places throughout this specification are not necessarily all referring to the same embodiment, but rather "one or more but not all embodiments" unless specifically stated otherwise. The terms "comprising," "including," "having," and variations thereof mean "including, but not limited to," unless expressly specified otherwise.
Referring to fig. 1, fig. 1 is a schematic block diagram of an on-off control circuit of a multi-path discharge circuit according to an embodiment of the present disclosure. As shown in fig. 1, the on-off control circuit of the multi-path discharging loop may include:
a plurality of switch modules (11-1 n, n is an integer greater than 1), a first switch control module 21 and a second switch control module 31. Wherein:
the plurality of switch modules 11-1 n are respectively connected in the multi-path discharging loop, and the switch modules are used for controlling the discharging loop where the switch modules are located to be switched on when being switched on and controlling the discharging loop where the switch modules are located to be switched off when being switched off.
The control end of the first switch control module 21 is connected with the plurality of switch modules 11-1 n, and the first switch control module 21 is used for outputting a first state signal or a second state signal through the control end.
Each control end of the second switch control module 31 is connected to one switch module, and the second switch control module 31 is configured to output a turn-on control signal or a turn-off control signal through the control end thereof.
The switch module is switched on when receiving the first state signal and the switching-on control signal, switched off when receiving the first state signal and the switching-off control signal, and switched off when receiving the second state signal.
In this embodiment, the discharging circuit refers to a circuit controlled by each switch module, so that the first power supply on the circuit can discharge to the load connected to the circuit through the circuit. The first power source may be a dry battery or a storage battery, or may be another type of power source, which is not limited herein. Illustratively, in one embodiment, the first power source may be a lithium battery.
It should be noted that, when the discharging loop is turned on, the first power supply can normally discharge to the outside; when the discharging loop is disconnected, the first power supply cannot discharge outwards.
In the embodiment of the application, one switch module is connected to one discharging loop, so that the number of the switch modules is equal to the total number of the discharging loops. The second switch control module 31 may include a number of control terminals greater than or equal to the number of switch modules.
Because the control ends of the first switch control module 21 are connected with all the switch modules 11-1 n, and each control end of the second switch control module 31 is connected with one switch module, the synchronous control of all the switch modules 11-1 n, namely the synchronous control of all the discharge loops, can be realized through the first switch control module 21; and the plurality of control terminals of the second switch control module 31 respectively realize independent control over the plurality of switch modules, that is, respectively realize independent control over each discharge loop.
Specifically, when each switch module 11-1 n needs to be controlled independently, the control end of the first switch control module 21 may output a first state signal, and meanwhile, any control end of the second switch control module 31 may output a turn-on control signal to control the switch module connected to the control end to turn on, so as to control the turn-on of the discharge loop where the switch module is located; or any control end of the second switch control module 31 may output a turn-off control signal to control the switch module connected to the control end to turn off, so as to control the discharge loop where the switch module is located to turn off.
When all the switch modules 11 to 1n need to be synchronously turned off, the control end of the first switch control module 21 can output a second state signal, and at this time, no matter what kind of control signal is output by each control end of the second switch control module 31, all the switch modules 11 to 1n are turned off, so that all the discharge loops are turned off. By way of example and not limitation, the synchronous control function may be used in the case that the second switch control module 31 fails, that is, when the second switch control module 31 fails, the first switch control module 21 may output the second status signal, so as to control all the discharge circuits to be opened.
By way of example and not limitation, the first state signal may be a high level signal and the second state signal may be a low level signal; the turn-on control signal may be a high level signal and the turn-off control signal may be a low level signal. By way of example and not limitation, the low level signal may be a signal having a voltage of 0V.
As can be seen from the above, in the on-off control circuit of the multi-path discharge circuit provided in the embodiment of the present application, since the control end of the first switch control module is connected to the plurality of switch modules respectively connected to different discharge circuits, and the second switch control module includes a plurality of control ends, and each control end is respectively connected to one switch module, the combination of the first switch control module and the second switch control module can not only realize the individual control of the on-off of each discharge circuit, but also realize the synchronous off control of all discharge circuits; and because the whole on-off control circuit only needs one first switch control module and one second switch control module except the switch module, the circuit structure is simple, and the cost is lower. Moreover, when all the discharging circuits need to be disconnected, only the first switch control module 21 needs to output the second state signal without being affected by the control signal output by the second switch control module 31, so that even if the second switch control module 31 fails, all the discharging circuits can be disconnected.
Referring to fig. 2, fig. 2 is a schematic block diagram of an on-off control circuit of a multi-path discharge circuit according to another embodiment of the present disclosure. As shown in FIG. 2, in the present embodiment, each of the switch modules 11-1 n may include: a unidirectional conductive unit and a first switching unit. Wherein:
an output end out2 of the unidirectional conductive unit is connected with a control end of the first switch control module 21, an input end in2 of the unidirectional conductive unit is connected with a first controlled end c1 of the first switch unit, a second controlled end c2 of the first switch unit is connected with a control end of the second switch control module 31, an input end in1 of the first switch unit is connected with a positive electrode B + of a first power supply in the discharge loop, and an output end out of the first switch unit is connected with an output end P + of the first power supply.
Referring to fig. 2, in another embodiment of the present application, the first switch control module 21 may specifically include: a power supply monitor U1 and an auxiliary shutdown unit 210. Wherein:
a switch control pin DSG of the power monitor U1 is connected to a signal input terminal of the auxiliary turn-off unit 210, and a signal output terminal of the auxiliary turn-off unit 210 is a control terminal of the first switch control module 21.
In the embodiment of the present application, the auxiliary turn-off unit 210 is configured to turn off all the switch modules by the auxiliary power controller U1 when the switch control pin DSG of the power controller U1 outputs a low-level signal (e.g., a signal with a voltage of 0V). Specifically, when the switch control pin DSG of the power controller U1 outputs a low level signal, the signal output terminal of the auxiliary turn-off unit 210 may output a second state signal, which may control all the switch modules to turn off, so that all the discharge loops are disconnected.
In a specific application, the power supply monitor U1 may be a chip with a power supply status monitoring function.
Referring to fig. 3, fig. 3 is a schematic circuit structure diagram of an on-off control circuit of a multi-path discharge circuit according to an embodiment of the present disclosure. As shown in fig. 3, in this embodiment, the first switch unit may specifically include: the circuit comprises a first resistor R1, a second resistor R2, a first switch tube Q1, a third resistor R3, a second switch tube Q2, a fourth resistor R4 and a fifth resistor R5. Wherein:
a first end of the first resistor R1 and a first conducting end of the first switch Q1 are commonly connected as an input end in1 of the first switch unit, a second end of the first resistor R1, a first end of the second resistor R2 and a first end of the third resistor R3 are commonly connected, a second end of the second resistor R2 is connected with a controlled end of the first switch Q1, a second conducting end of the first switch Q1 is an output end out1 of the first switch unit, a second end of the third resistor R3 is connected with a first conducting end of the second switch Q2, a controlled end of the second switch Q2, a second end of the fourth resistor R4 and a first end of the fifth resistor R5 are commonly connected as a first controlled end c1 of the first switch unit, a first end of the fourth resistor R4 is a second controlled end c2 of the first switch unit, and a second end of the fifth resistor R5 and a second conducting end of the second switch Q2 are commonly connected with a ground.
In a specific application, the first switching tube Q1 may be an NMOS tube or an NPN transistor, etc.; and/or the second switching tube Q2 may be an NMOS tube, an NPN transistor, or the like.
By way of example and not limitation, when the first switch Q1 is an NMOS transistor, the gate of the NMOS transistor is the controlled terminal of the first switch Q1, the drain of the NMOS transistor is the first conducting terminal of the first switch Q1, and the source of the NMOS transistor is the second conducting terminal of the first switch Q1.
When the first switch Q1 is an NPN transistor, a base of the NPN transistor is a controlled terminal of the first switch Q1, a collector of the NPN transistor is a first conducting terminal of the first switch Q1, and an emitter of the NPN transistor is a second conducting terminal of the first switch Q1.
When the second switch Q2 is an NMOS transistor, the gate of the NMOS transistor is the controlled terminal of the second switch Q2, the drain of the NMOS transistor is the first conducting terminal of the second switch Q2, and the source of the NMOS transistor is the second conducting terminal of the second switch Q2.
When the second switch Q2 is an NPN transistor, the base of the NPN transistor is the controlled terminal of the second switch Q2, the collector of the NPN transistor is the first conducting terminal of the second switch Q2, and the emitter of the NPN transistor is the second conducting terminal of the second switch Q2.
In specific applications, the unidirectional conductive unit may be a diode or a thyristor, or may also be a unidirectional conductive circuit composed of a plurality of components, and may be specifically set according to actual requirements, which is not limited herein.
By way of example and not limitation, as shown in fig. 3, when the unidirectional conducting unit is the diode D1, the anode of the diode D1 may be the input terminal in2 of the unidirectional conducting unit, and the cathode of the diode D1 may be the output terminal out2 of the unidirectional conducting unit.
In another embodiment of the present application, the auxiliary turn-off unit 210 may specifically include: a sixth resistor R6, a third switch tube Q3, a fourth switch tube Q4, a seventh resistor R7 and an eighth resistor R8. Wherein:
a first end of the sixth resistor R6 is connected to the output terminal VDD of the second power supply, a second end of the sixth resistor R6, the controlled end of the third switch Q3, and the first conducting end of the fourth switch Q4 are commonly connected, the first conducting end of the third switch Q3 is the signal output terminal of the auxiliary turn-off unit 210, the second conducting end of the third switch Q3, the second conducting end of the fourth switch Q4, and the second end of the eighth resistor R8 are commonly connected to ground, the controlled end of the fourth switch Q4, the second end of the seventh resistor R7, and the first end of the eighth resistor R8 are commonly connected, and the first end of the seventh resistor R7 is the signal input terminal of the auxiliary turn-off unit 210.
In a specific application, the third switching tube Q3 may be an NMOS tube or an NPN transistor, etc.; and/or the fourth switching tube Q4 may be an NMOS tube, an NPN transistor, or the like.
By way of example and not limitation, when the third transistor Q3 is an NMOS transistor, the gate of the NMOS transistor is the controlled terminal of the third transistor Q3, the drain of the NMOS transistor is the first conducting terminal of the third transistor Q3, and the source of the NMOS transistor is the second conducting terminal of the third transistor Q3.
When the third switching transistor Q3 is an NPN transistor, the base of the NPN transistor is the controlled terminal of the third switching transistor Q3, the collector of the NPN transistor is the first conducting terminal of the third switching transistor Q3, and the emitter of the NPN transistor is the second conducting terminal of the third switching transistor Q3.
When the fourth switching transistor Q4 is an NMOS transistor, the gate of the NMOS transistor is the controlled end of the fourth switching transistor Q4, the drain of the NMOS transistor is the first conducting end of the fourth switching transistor Q4, and the source of the NMOS transistor is the second conducting end of the fourth switching transistor Q4.
When the fourth switching transistor Q4 is an NPN transistor, a base of the NPN transistor is a controlled terminal of the fourth switching transistor Q4, a collector of the NPN transistor is a first conducting terminal of the fourth switching transistor Q4, and an emitter of the NPN transistor is a second conducting terminal of the fourth switching transistor Q4.
In yet another embodiment of the present application, the second switch control module 31 may include: a first controller U2. The first controller U2 includes a plurality of output pins (e.g., O1-On), and the plurality of output pins O1-On of the first controller U2 are a plurality of control terminals of the second switch control module 31, respectively.
In a specific application, the first controller U2 may be a Micro Controller Unit (MCU) or a Central Processing Unit (CPU).
The working principle of the on-off control circuit of the multi-path discharge loop provided by the embodiment of the present application is described in detail below with reference to fig. 3:
taking the switch module 11 as an example, because the switch module 11 is connected to the first switch control module 21 and the second switch control module 31 at the same time, the on/off of the switch module 11 is controlled by the first switch control module 21 and the second switch control module 31 together, and the switch module 11 receives two paths of control signals, one path is from the first switch control module 21, and the other path is from the second switch control module 31.
Specifically, when the switch control pin DSG of the power monitor U1 outputs a high level signal and the first output pin O1 of the first controller U2 outputs a high level signal, the voltage at the point a reaches the ground through the seventh resistor R7 and the eighth resistor R8 to obtain the voltage at the point X, so that the fourth switching tube Q4 is turned on, and at this time, the voltage at the point Y is 0V, and the third switching tube Q3 cannot be turned on and is in an off state. The voltage of the first output pin O1 of the first controller U2 reaches the ground through the fourth resistor R4 and the fifth resistor R5 to obtain a voltage at a point B, at this time, the second switch tube Q2 is turned on, the voltage at the point C is 0V, the voltage of the positive electrode B + of the first power supply reaches the ground through the first resistor R1, the third resistor R3 and the second switch tube Q2, so that a voltage difference is generated between the point F and the point D, and the voltage at the point E is equal to the voltage at the point D, that is, a voltage difference is generated between the point F and the point E, at this time, the first switch tube Q1 is turned on, and the voltage at the point G is equal to the voltage at the point F (the voltage drop generated by the first switch tube Q1 is small and can be ignored), and the voltage at the point G is a required discharge voltage, thereby achieving the conduction of the discharge loop.
When the switch control pin DSG of the power monitor U1 outputs a high level signal and the first output pin O1 of the first controller U2 outputs a low level signal (e.g., a control signal with a voltage of 0V), the voltage at the point a reaches the ground through the seventh resistor R7 and the eighth resistor R8 to obtain a voltage at the point X, so that the fourth switching tube Q4 is turned on, and at this time, the voltage at the point Y is 0V, and the third switching tube Q3 cannot be turned on and is in an off state. At this time, the voltage at the point B is 0V, the second switching tube Q2 is in an off state, the voltages at the points C and D are both equal to the voltage at the point F, and the voltage at the point E is equal to the voltage at the point D, so that there is no voltage difference between the points F and E, and at this time, the first switching tube Q1 cannot be turned on and is in an off state, so that the point G cannot obtain a required discharge voltage, thereby realizing the disconnection of the discharge circuit.
When the switch control pin DSG of the power monitor U1 outputs a low level signal (e.g., a control signal with a voltage of 0V), and the first output pin O1 of the first controller U2 outputs a high level signal, the voltage at the point X is 0V, at this time, the fourth switching transistor Q4 cannot be turned on and is in an off state, the voltage at the point Y is equal to the voltage at the output terminal VDD of the second power supply, the third switching transistor Q3 is turned on, and the voltage at the point Z is 0V. Due to the forward conduction characteristic of the diode D1, the voltage of the first output pin O1 of the first controller U2 reaches the ground through the fourth resistor R4 and the fifth resistor R5 to obtain a voltage at a point B, which is the conduction voltage drop of the diode D1, but the voltage cannot turn on the second switching tube Q2, at this time, the second switching tube Q2 is in an off state, the voltages at the points C and D are both equal to the voltage at the point F, and the voltage at the point E is equal to the voltage at the point D, so there is no voltage difference between the points F and E, at this time, the first switching tube Q1 cannot be turned on and off, and therefore, the point G cannot obtain a required discharge voltage, thereby achieving the disconnection of the discharge circuit.
When the switch control pin DSG of the power monitor U1 outputs a low level signal (e.g., a control signal with a voltage of 0V), and the first output pin O1 of the first controller U2 outputs a low level signal, the voltage at the point X is 0V, at this time, the fourth switching transistor Q4 cannot be turned on and is in an off state, the voltage at the point Y is equal to the voltage at the output terminal VDD of the second power supply, the third switching transistor Q3 is turned on, and the voltage at the point Z is 0V. The second switch tube Q2 is in off state, the voltage at point C and point D are both equal to the voltage at point F, and the voltage at point E is equal to the voltage at point D, so there is no voltage difference between point F and point E, and at this time, the first switch tube Q1 cannot be turned on and is in off state, so point G cannot obtain the required discharge voltage, thereby realizing the disconnection of the discharge loop.
Therefore, only when the switch control pin DSG of the power supply monitor U1 outputs a high level signal, the respective output pins O1 to On of the first controller U2 can realize On-off control of the first switch unit connected thereto. When the switch control pin DSG of the power supply monitor U1 outputs a low level signal, the output pins O1 to On of the first controller U2 cannot control the On/off of the first switch unit connected thereto, and at this time, all the discharge circuits are disconnected.
It should be noted that, because the auxiliary turn-off unit 210 is disposed in the on-off control circuit provided in the embodiment of the present application, even if a certain resistance exists between the switch control pin DSG of the power supply monitor U1 and the ground when outputting 0V, the whole on-off control circuit can be ensured not to be affected by the resistance, and further, the whole on-off control circuit can realize turn-off control of all switch modules when the power supply monitor U1 outputs a low-level signal.
The embodiment of the application also provides an energy storage device, which comprises a battery assembly and a multi-path discharging loop connected with the battery assembly, and the energy storage device also comprises the on-off control circuit of the multi-path discharging loop in the embodiment.
Wherein the battery pack may include a plurality of first power sources. The number of the first power supplies is equal to the total number of the discharging loops, and each first power supply is connected with one discharging loop.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present application and are intended to be included within the scope of the present application.
Claims (10)
1. An on-off control circuit of a multi-path discharge loop is characterized by comprising:
the system comprises a plurality of switch modules, a first switch control module and a second switch control module;
the switch modules are respectively connected in the multi-path discharge loops and used for controlling the discharge loops where the switch modules are located to be switched on when the switch modules are switched on and controlling the discharge loops where the switch modules are located to be switched off when the switch modules are switched off;
the control end of the first switch control module is connected with the plurality of switch modules, and the first switch control module is used for outputting a first state signal or a second state signal through the control end of the first switch control module;
each control end of the second switch control module is connected with one switch module, and the second switch control module is used for outputting a switching-on control signal or a switching-off control signal through the control end of the second switch control module;
the switch module is switched on when receiving the first state signal and the switching-on control signal, switched off when receiving the first state signal and the switching-off control signal, and switched off when receiving the second state signal.
2. The on-off control circuit of claim 1, wherein the switch module comprises: a unidirectional conductive unit and a first switching unit;
the output end of the one-way conductive unit is connected with the control end of the first switch control module, the input end of the one-way conductive unit is connected with the first controlled end of the first switch unit, the second controlled end of the first switch unit is connected with one control end of the second switch control module, the input end of the first switch unit is connected with the anode of a first power supply in the discharge loop, and the output end of the first switch unit is used for being connected with a load in the discharge loop.
3. The on-off control circuit of claim 2, wherein the first switch control module comprises: a power supply monitor and an auxiliary turn-off unit;
the switch control pin of the power supply monitor is connected with the signal input end of the auxiliary turn-off unit, and the signal output end of the auxiliary turn-off unit is the control end of the first switch control module.
4. The on-off control circuit according to claim 2, wherein said first switch unit comprises: the circuit comprises a first resistor, a second resistor, a first switching tube, a third resistor, a second switching tube, a fourth resistor and a fifth resistor;
the first end of the first resistor and the first conducting end of the first switch tube are connected together to be used as the input end of the first switch unit, the second end of the first resistor, the first end of the second resistor and the first end of the third resistor are connected in common, the second end of the second resistor is connected with the controlled end of the first switch tube, the second conducting end of the first switch tube is the output end of the first switch unit, the second end of the third resistor is connected with the first conducting end of the second switch tube, the controlled end of the second switch tube, the second end of the fourth resistor and the first end of the fifth resistor are connected together as the first controlled end of the first switch unit, the first end of the fourth resistor is a second controlled end of the first switch unit, and the second end of the fifth resistor and the second conducting end of the second switch tube are connected to the ground in common.
5. The on-off control circuit according to claim 3, wherein said auxiliary turn-off unit comprises: the sixth resistor, the third switch tube, the fourth switch tube, the seventh resistor and the eighth resistor;
the first end of sixth resistance is connected with the output of second power, the second end of sixth resistance the controlled terminal of third switch tube reaches the first end of leading of fourth switch tube connects altogether, the first end of leading of third switch tube does the signal output part of supplementary shutoff unit, the second end of leading of third switch tube the second end of leading of fourth switch tube reaches the second end of eighth resistance connects altogether in ground, the controlled terminal of fourth switch tube the second end of seventh resistance reaches the first end of eighth resistance connects altogether, the first end of seventh resistance does the signal input part of supplementary shutoff unit.
6. The on-off control circuit according to any of claims 1 to 5, wherein said second switch control module comprises a first controller;
and a plurality of output pins of the first controller are a plurality of control ends of the second switch control module respectively.
7. The on-off control circuit of claim 2, wherein said unidirectional conductive element comprises a diode or thyristor.
8. The on-off control circuit according to claim 4, wherein the first switching tube is an NMOS tube or an NPN type triode; and/or
The second switch tube is an NMOS tube or an NPN type triode.
9. The on-off control circuit according to claim 5, wherein the third switching tube is an NMOS tube or an NPN type triode; and/or
The fourth switching tube is an NMOS tube or an NPN type triode.
10. An energy storage device comprising a battery assembly and a plurality of discharge circuits connected to the battery assembly, wherein the energy storage device further comprises an on-off control circuit as claimed in any one of claims 1 to 9.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022997147.6U CN214412327U (en) | 2020-12-14 | 2020-12-14 | On-off control circuit of multi-path discharge loop and energy storage equipment |
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| CN202022997147.6U CN214412327U (en) | 2020-12-14 | 2020-12-14 | On-off control circuit of multi-path discharge loop and energy storage equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115882487A (en) * | 2022-12-13 | 2023-03-31 | 厦门海辰储能科技股份有限公司 | Control device, control method, storage medium and energy storage system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115882487A (en) * | 2022-12-13 | 2023-03-31 | 厦门海辰储能科技股份有限公司 | Control device, control method, storage medium and energy storage system |
| CN115882487B (en) * | 2022-12-13 | 2024-01-26 | 厦门海辰储能科技股份有限公司 | Control device, control method, storage medium and energy storage system |
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