CN219627406U - Control circuit - Google Patents
Control circuit Download PDFInfo
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- CN219627406U CN219627406U CN202320729881.5U CN202320729881U CN219627406U CN 219627406 U CN219627406 U CN 219627406U CN 202320729881 U CN202320729881 U CN 202320729881U CN 219627406 U CN219627406 U CN 219627406U
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- 238000004146 energy storage Methods 0.000 claims abstract description 64
- 230000002159 abnormal effect Effects 0.000 claims abstract description 8
- 238000007599 discharging Methods 0.000 claims description 38
- 238000001514 detection method Methods 0.000 claims description 20
- 238000001914 filtration Methods 0.000 claims description 8
- 238000000034 method Methods 0.000 description 13
- 238000010586 diagram Methods 0.000 description 12
- 238000006243 chemical reaction Methods 0.000 description 7
- 238000010438 heat treatment Methods 0.000 description 4
- 230000005856 abnormality Effects 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005669 field effect Effects 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- GELKBWJHTRAYNV-UHFFFAOYSA-K lithium iron phosphate Chemical compound [Li+].[Fe+2].[O-]P([O-])([O-])=O GELKBWJHTRAYNV-UHFFFAOYSA-K 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000012163 sequencing technique Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The embodiment of the utility model provides a control circuit, which comprises: the device comprises a first protection module, a second protection module and a connection module; the energy storage module, the electric equipment and the first protection module form a discharge loop; the first protection module is used for being disconnected under the condition that the discharge loop is abnormal; the connection module is connected with the power input equipment, and the energy storage module, the power input equipment, the first protection module and the second protection module form a charging loop; the first protection module and the second protection module are used for being disconnected under the condition that the charging loop is abnormal.
Description
Technical Field
The utility model relates to the technical field of electric energy, in particular to a control circuit.
Background
With the continuous development of energy storage technology, the energy storage power supply has high power and the requirement on the capacity conversion efficiency of the battery is higher. In the related art, the charging part and the discharging part of the battery core protection part in the energy storage power supply usually adopt the same interface, and the current loop has only 2 wires, so that the disadvantage is that the number and the model of Metal-Oxide-semiconductor field effect transistors (MOSFETs) for protection and control of charging and discharging are the same, and the current can pass through a charging control MOS during discharging, so that the internal resistance in the current loop is increased, the heating value of the system is increased, and the conversion energy of the battery core is reduced.
Disclosure of Invention
Based on the above problems, the present utility model provides a control circuit including: the device comprises a first protection module, a second protection module and a connection module; wherein:
the first end of the energy storage module is connected with the first end of the connecting module, the second end of the connecting module is respectively connected with the first end of the first protection module and the first end of the second protection module, the second end of the second protection module is connected with the first end of the first protection module, and the second end of the first protection module is connected with the second end of the energy storage module;
the connection module is connected with electric equipment, and the energy storage module, the electric equipment and the first protection module form a discharge loop; the first protection module is used for being disconnected under the condition that the discharge loop is abnormal;
the connection module is connected with the power input equipment, and the energy storage module, the power input equipment, the first protection module and the second protection module form a charging loop; the first protection module and the second protection module are used for being disconnected under the condition that the charging loop is abnormal.
In some embodiments, the control circuit further comprises: a control module;
the first end of the control module is connected with the first end of the energy storage module, the second end of the control module is connected with the second end of the energy storage module, and the third end of the control module is connected with the second end of the first protection module; the fourth end of the control module is respectively connected with the third end of the first protection module and the third end of the second protection module;
the control module is used for detecting the voltage and/or the current in the discharging loop or the charging loop and generating a detection result; and under the condition that the detection result represents that the discharge loop is over-voltage and/or over-current, the first protection module is controlled to be disconnected, or under the condition that the detection result represents that the charge loop is over-voltage and/or over-current, the first protection module and the second protection module are controlled to be disconnected.
In some embodiments, the control circuit further comprises a resistance module;
the first end of the resistance module is connected with the second end of the energy storage module, the second end of the resistance module is connected with the third end of the control module, and the third end of the resistance module is connected with the second end of the first protection module;
the control module is used for detecting the voltage at two ends of the resistance module and/or detecting the current passing through the resistance module to generate the detection result.
In some embodiments, the control module includes an analog front end chip;
the analog front-end chip is used for sending a first voltage signal to the first protection module when the detection result indicates that the discharge loop is over-voltage and/or over-current, or sending the first voltage signal to the first protection module and the second protection module when the detection result indicates that the charge loop is over-voltage and/or over-current; the first voltage signal is used for disconnecting the first protection module or disconnecting the first protection module and the second protection module.
In some embodiments, the first protection module includes at least two first switching tubes in a parallel state; the first protection module comprises at least two second switching tubes in a parallel state; the number of the first switching tubes is larger than that of the second switching tubes.
In some embodiments, the first end of the connection module serves as a common positive terminal for charging and for discharging, and the second end of the connection module includes a negative terminal for charging and a negative terminal for discharging; wherein,,
the negative terminal for charging is connected with the first end of the second protection module; the negative terminal for discharging is connected with the first end of the first protection module;
a first end of the connection module and the negative terminal for charging are used for connecting the power input device;
the first end of the connection module and the negative terminal for discharging are used for connecting the electric equipment.
In some embodiments, one end of each of the at least two first switching tubes is connected to the control module, and one end of each of the at least two second switching tubes is connected to the control module.
In some embodiments, the control circuit further includes a first resistor and a second resistor, the number of the first resistors corresponds to the number of the first switching tubes, and the number of the second resistors corresponds to the number of the second switching tubes;
one end of each first switching tube is connected with the control module through the first resistor, and one end of each second switching tube is connected with the control module through the second resistor.
In some embodiments, the control circuit further comprises a filtering module; the filtering module is connected with the energy storage module in parallel.
In some embodiments, the first switching tube and the second switching tube are MOS tubes.
In the control circuit provided by the embodiment of the utility model, the first end of the connecting module is connected with the first end of the energy storage module, the second end of the connecting module is respectively connected with the first end of the first protection module and the first end of the second protection module, the second end of the second protection module is connected with the first end of the first protection module, and the second end of the first protection module is connected with the second end of the energy storage module; the connection module is connected with the electric equipment, and the energy storage module, the electric equipment and the first protection module form a discharge loop; the first protection module is used for being disconnected under the condition that the discharge loop is abnormal; the connection module is connected with the power input equipment, and the energy storage module, the power input equipment, the first protection module and the second protection module form a charging loop; the first protection module and the second protection module are used for being disconnected under the condition that the charging loop is abnormal. In this way, the embodiment of the utility model separates the charging loop from the discharging loop, and in the discharging process, the current in the discharging loop does not pass through the second protection module for controlling the charging loop, so that the internal resistance in the discharging loop is reduced, the heating value of the energy storage system is further reduced, and the conversion energy of the battery core is increased.
Drawings
Fig. 1 is a schematic structural diagram of an energy storage module system according to an embodiment of the present utility model;
fig. 2 is a schematic diagram of a first structure of a control circuit according to an embodiment of the present utility model;
fig. 3 is a second schematic structural diagram of a control circuit according to an embodiment of the present utility model;
fig. 4 is a schematic diagram of a third structure of a control circuit according to an embodiment of the present utility model;
fig. 5 is a fourth schematic diagram of a control circuit according to an embodiment of the present utility model;
fig. 6 is a schematic diagram of a fifth configuration of a control circuit according to an embodiment of the present utility model.
Reference numerals illustrate: 201-an energy storage module; 202-a first protection module; 2021-a first switching tube; 2022-a second switching tube; 203-a second protection module; 204-a connection module; 2041-a first end in the connection module; 2042—a negative terminal for charging; 2043—a negative terminal for discharge; 205-a control module; 2051-analog front end chip; 206-a resistor module; 207-filtering module.
Detailed Description
The technical scheme of the utility model is further elaborated below with reference to the drawings and examples. It will be apparent that the described embodiments are only some, but not all, embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to fall within the scope of the utility model.
In the following description, reference is made to "some embodiments" which describe a subset of all possible embodiments, but it is to be understood that "some embodiments" can be the same subset or different subsets of all possible embodiments and can be combined with one another without conflict.
In the following description, suffixes such as "module", "component", or "unit" for representing elements are used only for facilitating the description of the present utility model, and have no specific meaning per se. Thus, "module," "component," or "unit" may be used in combination.
It should be noted that the term "first\second\third" related to the embodiments of the present utility model is merely to distinguish similar objects, and does not represent a specific order for the objects, it being understood that the "first\second\third" may interchange a specific order or sequencing, where allowed, so that the embodiments of the present utility model described herein can be implemented in an order other than that illustrated or described herein.
Fig. 1 is a schematic structural diagram of an energy storage module system according to an embodiment of the present utility model, where, as shown in fig. 1, the energy storage module system includes an external power input unit, a power conversion unit, a power management unit, a power storage unit, and a power output unit; wherein,,
and an external power input unit for inputting power to the energy storage module. In some embodiments, the energy storage module may be any device capable of storing electrical energy, such as a lithium iron phosphate battery, a polymer lithium battery, a super capacitor battery, and the like. The electric energy stored in the energy storage module is input from the outside, and various kinds of external electric energy exist, for example: utility grid, solar power generation, and so on.
And the power conversion unit is used for converting the external power input unit into electric energy which can be stored by the energy storage module.
And the power management unit is used for managing the electric energy in the energy storage module. During charging and discharging, the power storage and power management unit is an intersection and is also the core of the energy storage module. The method is mainly used for managing the charge and discharge of the battery, the capacity, the temperature and the like, and managing the measurement, starting, stopping and on-off of electric energy.
The power storage unit comprises an energy storage module, wherein the energy storage module consists of a plurality of electric cores. The power storage unit is used for storing electric energy.
And the power output unit is used for outputting the electric energy in the energy storage module.
In the related art, the charging and discharging of the power management unit usually adopts the same interface, and the current loop has only 2 wires, namely, the charging and discharging can pass through the same control MOS tube, so that the internal resistance in the current loop can be increased, and the heating value of the energy storage module system is further increased, thereby reducing the conversion energy of the battery core.
In order to solve the above technical problems, an embodiment of the present utility model provides a control circuit that can be applied to the above power management unit. Fig. 2 is a first schematic structural diagram of a control circuit according to an embodiment of the present utility model, as shown in fig. 2, the control circuit includes a first protection module 202, a second protection module 203, and a connection module 204, where:
the first end of the connection module 204 is connected with the first end of the energy storage module 201, the second end of the connection module 204 is connected with the first end of the first protection module 202 and the first end of the second protection module 203 respectively, the second end of the second protection module 203 is connected with the first end of the first protection module 202, and the second end of the first protection module 202 is connected with the second end of the energy storage module 201;
the first end of the connecting module 204 and the second end of the connecting module are respectively connected with electric equipment, and the energy storage module 201, the electric equipment and the first protection module 202 form a discharge loop; a first protection module 202 for opening in case of an abnormality in the discharge circuit;
the first end of the connection module 204 and the second end of the connection module are respectively connected with the power input device, and the energy storage module 201, the power input device, the first protection module 202 and the second protection module 203 form a charging loop; the first protection module 202 and the second protection module 203 are configured to be disconnected when an abnormality occurs in the charging circuit.
In the actual process, when the connection module is connected with the electric equipment, the control circuit is connected with the load, the energy storage module in the control circuit is required to provide electric energy for the electric equipment, and the current flow direction in the control circuit is as follows: the current flows out from the positive electrode of the energy storage module, and sequentially passes through the electric equipment, the first protection module and the negative electrode of the energy storage module, so that a discharge loop is formed. Here, the control circuit may control the current in the discharge loop through the first protection module. In some embodiments, the first protection module may receive an off signal or an on signal and then disconnect or turn on the discharge loop based on the off signal or the on signal. In this way, the discharging process of the energy storage module can be controlled by the first protection module.
When the connection module is connected with the power input device, it is indicated that the energy storage module in the control circuit needs to be charged, and at this time, the current flow direction in the control circuit is as follows: the current flows out from the positive electrode of the power input device, and sequentially passes through the positive electrode and the negative electrode of the energy storage module, the first protection module, the second protection module and the negative electrode of the power input device, so that a charging loop is formed. Here, the control circuit may control the current in the discharge loop together by the first protection module and the second protection module. In some embodiments, the first protection module and the second protection module may receive an off signal or an on signal, and then disconnect or turn on the discharge loop based on the off signal or the on signal. In this way, the charging process of the energy storage module can be controlled by the first protection module and the second protection module.
In some embodiments, the anomaly in the discharge loop and the anomaly in the charge loop may include at least one of: an overcurrent phenomenon occurs in the circuit and an overvoltage phenomenon occurs in the circuit.
In an actual process, the cost of the energy storage module obtaining the electric power from the electric power input device is smaller than the cost of the electric equipment obtaining the electric power from the energy storage module, because the energy storage module can provide the electric power for the electric equipment after the electric power is needed to be stored in the energy storage module after the electric power is obtained, and the internal resistance of the first protection module and the second protection module is larger than the internal resistance of the first protection module, namely the loss of the first protection module and the second protection module is also larger than the loss of the first protection module. Therefore, the current in the discharge loop does not pass through the second protection module, so that the internal resistance in the discharge loop is reduced, the heating value of the energy storage system is further reduced, and the conversion energy of the battery core is increased.
The embodiment of the utility model provides a control circuit, fig. 3 is a second schematic structural diagram of the control circuit provided by the embodiment of the utility model, and as shown in fig. 3, the control circuit further includes a control module 205; wherein:
a first end of the control module 205 is connected with a first end of the energy storage module, a second end of the control module 205 is connected with a second end of the energy storage module, and a third end of the control module 205 is connected with a second end of the first protection module 202; the fourth end of the control module 205 is respectively connected with the third end of the first protection module 202 and the third end of the second protection module 203;
the control module 205 is configured to detect a voltage and/or a current in the discharging loop or the charging loop, and generate a detection result; and controlling the first protection module 202 to be disconnected under the condition that the detection result indicates that the discharge loop is over-voltage and/or over-current, or controlling the first protection module 202 and the second protection module 203 to be disconnected under the condition that the detection result indicates that the charge loop is over-voltage and/or over-current.
In some embodiments, the control module may include an Analog Front End (AFE), and the AFE may detect a voltage and/or a current in the charging circuit or the discharging circuit, determine a detection result according to the detected voltage and/or current, and control the first protection module to be disconnected when the detection result indicates that the discharging circuit is over-voltage and/or over-current, or control the first protection module and the second protection module to be disconnected when the detection result indicates that the charging circuit is over-voltage and/or over-current.
In some embodiments, the control module may determine the detection result according to the detected voltage and/or current by comparing a preset voltage and a preset current, that is, the control module pre-stores the preset voltage and the preset current corresponding to the charging loop and the discharging loop respectively, when the control module detects the voltage in the charging loop or the discharging loop, the control module may compare the detected voltage with the corresponding preset voltage, and when the detected voltage is greater than the corresponding preset voltage, it indicates that an overvoltage phenomenon occurs in the corresponding loop, and the control module may control the first protection module and the second protection module, or the first protection module is disconnected. The control module can compare the detected current with the corresponding preset current when detecting the current in the charging loop or the discharging loop, and indicate that the overcurrent phenomenon occurs in the corresponding loop when the detected current is larger than the corresponding preset current, and the control module can control the first protection module and the second protection module or the first protection module to be disconnected. In some embodiments, the control module may send control signals to the first protection module and the second protection module to cause the first protection module and the second protection module to disconnect.
The embodiment of the utility model provides a control circuit, fig. 4 is a schematic diagram of a third structure of the control circuit provided by the embodiment of the utility model, and as shown in fig. 4, the control circuit further includes a resistor module 206; wherein:
a first end of the resistor module 206 is connected with a second end of the energy storage module 201, a second end of the resistor module 206 is connected with a third end of the control module 205, and a third end of the resistor module 206 is connected with a second end of the first protection module 202; the control module 205 is configured to detect a voltage across the resistor module 206 and/or detect a current passing through the resistor module, and generate a detection result.
In some embodiments, the resistor module includes a plurality of resistors, the plurality of resistors are connected in parallel, and two ends of the plurality of resistors connected in parallel are respectively connected with the control module, and the control module can detect voltages at two ends of the plurality of resistors, so as to detect voltages of the discharging loop and the charging loop, so as to determine whether overvoltage occurs in the discharging loop and the charging loop. The control module may also detect current through the plurality of resistors to thereby detect current in the discharge circuit and the charge circuit to determine whether an overvoltage has occurred in the discharge circuit and the charge circuit.
An embodiment of the present utility model provides a control circuit, and fig. 5 is a schematic fourth structural diagram of the control circuit provided by the embodiment of the present utility model, as shown in fig. 5, a second end (not shown in the drawing) in a connection module 204 in the control circuit includes a negative terminal 2042 for charging and a negative terminal 2043 for discharging, and a first end 2041 in the connection module 204 serves as a common positive terminal for charging and for discharging, wherein:
the first end 2041 of the connection module 204 is connected to the first end (bat+) of the energy storage module 201; a negative terminal 2042 for charging is connected to a first end of the second protection module 203; a negative terminal 2043 for discharging is connected to a first end of the first protection module 202.
In the embodiment of the utility model, the first end can be connected with electric equipment and the positive electrode of the electric power input equipment, the negative electrode terminal for charging can be connected with the negative electrode of the electric power input equipment, and the negative electrode terminal for discharging can be used as the negative electrode of the electric equipment. That is, the first end in the connection module and the negative terminal for charging are used to connect the power input device, and the first end in the connection module and the negative terminal for discharging are used to connect the powered device. In this way, the embodiment of the utility model can separate the discharging loop from the charging loop through the first end, the negative electrode terminal for charging and the negative electrode terminal for discharging, and further can set different protection modules in different loops, thereby realizing the effect of controlling the current in different loops through different protection modules.
In some embodiments, a first end of the connection module in the control circuit may include a plurality of connection terminals, and the plurality of connection terminals in the first end are respectively connected to the power input device and an anode of the electrical device.
In an embodiment of the present utility model, the first protection module 202 includes at least two first switching tubes 2021; the second protection module 202 includes at least two second switching tubes 2022; and at least two first switching tubes 2021 are connected in parallel, and at least two second switching tubes 2022 are connected in parallel.
In some embodiments, the power in the discharge loop is different from the power in the charge loop, so it is necessary to provide a switching tube for the different loops that matches its power. In the actual process, the power in the discharging loop is larger than the power in the charging loop, and in the case that the specifications of the first switching tube and the second switching tube (for example, the minimum saturation current of the switching tubes) are the same, the number of the at least two first switching tubes may be set to be larger than the number of the at least two second switching tubes. In the case that the number of the at least two first switching tubes is the same as the number of the at least two second switching tubes, a switching tube having a minimum saturation current smaller than that of the first switching tubes may be used as the second switching tube. Therefore, the resource waste caused by adopting the same specification or the same number of switching tubes as the protection modules of the discharging loop and the charging loop can be avoided.
In some embodiments, the first switching tube and the second switching tube may be MOS tubes, a source electrode of the first switching tube is connected to a negative electrode of the energy storage module, a drain electrode of the first switching tube is connected to the third node in the connection module and a drain electrode of the second switching tube, and a source electrode of the second switching tube is connected to the second node of the connection module.
In some embodiments, the first and second switching transistors may also be insulated gate bipolar transistors (Insulated Gate Bipolar Transistor, IGBTs) or switching transistors.
In some embodiments, the control circuit further includes a filtering module 207, where the filtering module 207 is connected in parallel with the energy storage module 201, and is configured to filter the current output by the energy storage module 201 or the current input by the power input device. In some embodiments, the filtering module 207 may be a filter capacitor. In this way, by providing the filter module 207 in the control circuit, the smoothness of the current output from the energy storage module 201 or the current input from the power input device can be improved.
An embodiment of the present utility model provides a control circuit, and fig. 6 is a schematic diagram of a fifth structure of the control circuit provided in the embodiment of the present utility model, as shown in fig. 6, a first protection module 202 in the control circuit includes: MOS transistor Q9 to MOS transistor Q18; the second protection module 203 includes: MOS transistor Q3 through MOS transistor Q8.
The control circuit provided by the embodiment of the utility model further comprises a first resistor and a second resistor. The first resistor is any one of the resistors R7 to R16, and the second resistor is any one of the resistors R1 to R6.
In the embodiment of the utility model, the source electrode of any one of the MOS transistors Q3 to Q8 after being connected in parallel is connected with the second interface in the connection module, the drain electrode of any one of the MOS transistors Q3 to Q8 is connected with the drain electrode of any one of the MOS transistors Q9 to Q18 after being connected in parallel, and the source electrode of any one of the MOS transistors Q9 to Q18 is connected with the resistance module.
In the embodiment of the present utility model, one end of each first switching tube 2021 in the first protection module 202 is connected to the control module 205 through a first resistor, and one end of each second switching tube 2022 in the second protection module 203 is connected to the control module 205 through a second resistor.
In the embodiment of the utility model, the grid electrode of the MOS tube Q3 is connected with the analog front end chip 2051 in the control module 205 through the resistor R1, the grid electrode of the MOS tube Q4 is connected with the analog front end chip 2051 through the resistor R2, the grid electrode of the MOS tube Q5 is connected with the analog front end chip 2051 through the resistor R3, the grid electrode of the MOS tube Q6 is connected with the analog front end chip 2051 through the resistor R4, the grid electrode of the MOS tube Q7 is connected with the analog front end chip 2051 through the resistor R5, and the grid electrode of the MOS tube Q8 is connected with the analog front end chip 2051 through the resistor R6; the grid of the MOS tube Q9 is connected with the analog front end chip 2051 through a resistor R7, the grid of the MOS tube Q10 is connected with the analog front end chip 2051 through a resistor R8, the grid of the MOS tube Q11 is connected with the analog front end chip 2051 through a resistor R9, the grid of the MOS tube Q12 is connected with the analog front end chip 2051 through a resistor R10, the grid of the MOS tube Q13 is connected with the analog front end chip 2051 through a resistor R11, the grid of the MOS tube Q14 is connected with the analog front end chip 2051 through a resistor R12, the grid of the MOS tube Q15 is connected with the analog front end chip 2051 through a resistor R14, the grid of the MOS tube Q17 is connected with the analog front end chip 2051 through a resistor R15, and the grid of the MOS tube Q18 is connected with the analog front end chip 2051 through a resistor R16. Thus, the analog front-end chip can send control signals to each MOS tube in the first protection module and the second protection module, so that the control of the MOS tubes is realized, and the MOS tubes are disconnected or connected. In some embodiments, the control signal may be a voltage signal including a first voltage signal and a second voltage signal; under the condition that the analog front-end chip determines that the discharge loop or the charge loop is over-voltage and/or over-current, the analog front-end chip sends a first voltage signal to the corresponding MOS tube, so that the corresponding MOS tube is disconnected; under the condition that the analog front-end chip determines that the discharge loop or the charge loop does not generate overvoltage and/or overcurrent, the analog front-end chip sends a second voltage signal to the corresponding MOS tube, so that the corresponding MOS tube is conducted. Here, the first voltage signal may be a negative logic voltage and the second voltage signal is a positive logic voltage.
In an embodiment of the present utility model, the resistor module 206 includes resistors R19 to R22, where the resistors R19 to R22 are connected in parallel, and the resistors R19 to R22 after being connected in parallel are connected to the analog front end chip 2051, so that the analog front end chip 2051 can detect voltages across the resistors R19 to R22, and/or detect currents through the resistors R19 to R22, to determine whether an overvoltage and/or an overcurrent occurs in the discharge circuit or the charge circuit.
It should be appreciated that reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure or characteristic described in connection with the embodiment is included in at least one embodiment of the present utility model. Thus, the appearances of the phrases "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. It should be understood that, in various embodiments of the present utility model, the sequence numbers of the foregoing processes do not mean the order of execution, and the order of execution of the processes should be determined by the functions and internal logic thereof, and should not constitute any limitation on the implementation process of the embodiments of the present utility model. The foregoing embodiment numbers of the present utility model are merely for the purpose of description, and do not represent the advantages or disadvantages of the embodiments.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, article or apparatus that comprises the element.
In the several embodiments provided by the present utility model, it should be understood that the disclosed apparatus may be implemented in other ways. The above described device embodiments are only illustrative, e.g. the division of the units is only one logical function division, and there may be other divisions in practice, such as: multiple units or components may be combined or may be integrated into another system, or some features may be omitted, or not performed. In addition, the various components shown or discussed may be coupled or directly coupled or communicatively coupled to each other via some interface, whether indirectly coupled or communicatively coupled to devices or units, whether electrically, mechanically, or otherwise.
The units described above as separate components may or may not be physically separate, and components shown as units may or may not be physical units; can be located in one place or distributed to a plurality of network units; some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
In addition, each functional unit in each embodiment of the present utility model may be integrated in one processing unit, or each unit may be separately used as one unit, or two or more units may be integrated in one unit; the integrated units may be implemented in hardware or in hardware plus software functional units.
The features disclosed in the several circuit embodiments provided by the utility model can be arbitrarily combined under the condition of no conflict to obtain a new circuit embodiment.
The features disclosed in the several device embodiments provided by the utility model can be arbitrarily combined under the condition of no conflict to obtain a new device embodiment.
The foregoing is merely illustrative of the present utility model, and the present utility model is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the claims.
Claims (10)
1. A control circuit, the control circuit comprising: the device comprises a first protection module, a second protection module and a connection module; wherein:
the first end of the connecting module is connected with the first end of the energy storage module, the second end of the connecting module is respectively connected with the first end of the first protection module and the first end of the second protection module, the second end of the second protection module is connected with the first end of the first protection module, and the second end of the first protection module is connected with the second end of the energy storage module;
the connection module is connected with electric equipment, and the energy storage module, the electric equipment and the first protection module form a discharge loop; the first protection module is used for being disconnected under the condition that the discharge loop is abnormal;
the connection module is connected with the power input equipment, and the energy storage module, the power input equipment, the first protection module and the second protection module form a charging loop; the first protection module and the second protection module are used for being disconnected under the condition that the charging loop is abnormal.
2. The control circuit of claim 1, wherein the control circuit further comprises: a control module;
the first end of the control module is connected with the first end of the energy storage module, the second end of the control module is connected with the second end of the energy storage module, and the third end of the control module is connected with the second end of the first protection module; the fourth end of the control module is respectively connected with the third end of the first protection module and the third end of the second protection module;
the control module is used for detecting the voltage and/or the current in the discharging loop or the charging loop and generating a detection result; and controlling the first protection module to be disconnected under the condition that the detection result represents that the discharge loop is over-voltage and/or over-current, or controlling the first protection module and the second protection module to be disconnected under the condition that the detection result represents that the charge loop is over-voltage and/or over-current.
3. The control circuit of claim 2, wherein the control circuit further comprises a resistor module;
the first end of the resistance module is connected with the second end of the energy storage module, the second end of the resistance module is connected with the third end of the control module, and the third end of the resistance module is connected with the second end of the first protection module;
the control module is used for detecting the voltage at two ends of the resistance module and/or detecting the current passing through the resistance module to generate the detection result.
4. A control circuit according to claim 2 or 3, wherein the control module comprises an analog front end chip;
the analog front-end chip is used for sending a first voltage signal to the first protection module when the detection result indicates that the discharge loop is over-voltage and/or over-current, or sending the first voltage signal to the first protection module and the second protection module when the detection result indicates that the charge loop is over-voltage and/or over-current; the first voltage signal is used for disconnecting the first protection module or disconnecting the first protection module and the second protection module.
5. A control circuit according to claim 2 or 3, wherein the first protection module comprises at least two first switching tubes connected in parallel; the first protection module comprises at least two second switching tubes connected in parallel; the number of the first switching tubes is larger than that of the second switching tubes.
6. A control circuit according to any one of claims 1 to 3, wherein the first end of the connection module serves as a common positive terminal for charging and for discharging, and the second end of the connection module comprises a negative terminal for charging and a negative terminal for discharging; wherein,,
the negative terminal for charging is connected with the first end of the second protection module; the negative terminal for discharging is connected with the first end of the first protection module;
a first end of the connection module and the negative terminal for charging are used for connecting the power input device;
the first end of the connection module and the negative terminal for discharging are used for connecting the electric equipment.
7. The control circuit of claim 5, wherein one end of each of the at least two first switching tubes is connected to the control module, and one end of each of the at least two second switching tubes is connected to the control module.
8. The control circuit of claim 5, further comprising a first resistor and a second resistor, the number of first resistors corresponding to the number of first switching tubes and the number of second resistors corresponding to the number of second switching tubes;
one end of each first switching tube is connected with the control module through the first resistor, and one end of each second switching tube is connected with the control module through the second resistor.
9. A control circuit according to any one of claims 1 to 3, wherein the control circuit further comprises a filtering module; the filtering module is connected with the energy storage module in parallel.
10. The control circuit of claim 5, wherein the first switching tube and the second switching tube are MOS tubes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320729881.5U CN219627406U (en) | 2023-03-23 | 2023-03-23 | Control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320729881.5U CN219627406U (en) | 2023-03-23 | 2023-03-23 | Control circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219627406U true CN219627406U (en) | 2023-09-01 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320729881.5U Active CN219627406U (en) | 2023-03-23 | 2023-03-23 | Control circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219627406U (en) |
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2023
- 2023-03-23 CN CN202320729881.5U patent/CN219627406U/en active Active
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