CN211790839U - Automatic charging distributor with balance repairing function and charging system - Google Patents
Automatic charging distributor with balance repairing function and charging system Download PDFInfo
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- CN211790839U CN211790839U CN202020368721.9U CN202020368721U CN211790839U CN 211790839 U CN211790839 U CN 211790839U CN 202020368721 U CN202020368721 U CN 202020368721U CN 211790839 U CN211790839 U CN 211790839U
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Abstract
The utility model provides an automatic distributor and charging system that charges with balanced restoration function. The charging distributor comprises an input terminal, a first detection sensor for detecting whether an external power supply is connected or not, a control module and a first change-over switch connected between the battery modules; when the first switch is switched on, all the battery modules are connected in series, and when the first switch is switched off, the battery modules are independent; the system also comprises a plurality of parallel charging channels, and one charging channel is connected with at least one battery module; each charging channel is provided with a charging adjusting unit and a second change-over switch; when the second switch is switched on, the charging adjusting unit charges the battery module, and when the second switch is switched off, the charging adjusting unit does not charge the battery module. This charger can be according to external power source's the access condition automatic switch parallel independent charging or series discharge, has effectively solved the phenomenon of charging unbalance, can prolong battery module or electric core life-span, and charge efficiency is high.
Description
Technical Field
The utility model relates to a battery charging technology field, concretely relates to automatic distributor and charging system that charges with balanced repair function.
Background
In current battery module integrated configuration, for satisfying the high voltage requirement of load, all adopt the mode of a plurality of battery module series combinations, every inside series connection of battery module has a plurality of electric cores, and every battery module is equipped with a protection shield. When charging a plurality of battery module to series connection combination, can lead to the protection shield to bear increase voltage, especially because of the higher and increase the inside electric core cluster number of establishing ties of battery module back of load voltage demand, can lead to the protection shield to bear the further increase of voltage, it is higher to the withstand voltage requirement of the device on the protection shield, increase cost, the reliability reduces simultaneously. Moreover, the number of the battery cell strings connected in series inside the battery module is increased, so that the size of a single battery module is large, the space inside a vehicle is not utilized, and the battery module is inconvenient to install and use.
In addition, because the restriction of present battery production technology and technology causes the technical index uniformity of each battery module and each electric core in the battery module to be relatively poor, therefore the phenomenon of charge imbalance appears easily in the battery module or electric core after the series combination in the charging process, influences the life-span of battery module or electric core, and charging efficiency is lower.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects existing in the prior art, the utility model aims to provide an automatic charging distributor and charging system with balanced repair function.
In order to achieve the above object of the present invention, according to a first aspect of the present invention, the present invention provides an automatic charging distributor with an equalization repairing function, comprising an input terminal, a first detecting sensor for detecting whether the input terminal is connected to an external power supply, a control module, and a first switch connected between battery modules; when all the first change-over switches are switched on, all the battery modules are connected in series, and when all the first change-over switches are switched off, the battery modules are independent; the system also comprises a plurality of parallel charging channels, and one charging channel is connected with at least one battery module; each charging channel is provided with a charging adjusting unit and a second change-over switch; the input end of the charging adjusting unit is connected with the output end of the input terminal, and the output end of the charging adjusting unit is connected with the charging input end of the battery module; when the second change-over switch is switched on, the charging adjusting unit charges the battery module, and when the second change-over switch is switched off, the charging adjusting unit does not charge the battery module; the output end of the first detection sensor is connected with the power supply detection end of the control module, the first signal output end of the control module is connected with the control end of the first change-over switch, the second signal output end of the control module is connected with the control end of the second change-over switch, and the third signal output end of the control module is connected with the starting end of the charging regulation unit.
The beneficial effects of the above technical scheme are: the charger can control the first change-over switch to be switched off and the second change-over switch to be switched on when the first detection sensor detects that an external power supply is input, so that each battery module is charged independently in parallel, and the charging adjusting module on each charging channel can independently adjust the charging current and/or the charging voltage of the battery module on the channel, so that the charging is balanced, the batteries are protected, and the charging efficiency is improved; when the first detection sensor detects that no external power supply is input, the charger can control the first switch to be switched on and the second switch to be switched off, and the plurality of battery modules are connected in series to enter a discharging mode. The charger can be automatically switched into a parallel independent charging mode or a series discharging mode according to the access condition of an external power supply, effectively solves the phenomenon of unbalanced charging, can prolong the service life of a battery module, and is high in charging efficiency.
In a preferred embodiment of the present invention, the charging control device further comprises one or more filter capacitors arranged in parallel at the input end of the charging control unit; the first end of the filter capacitor is connected with the input end of the charging adjusting unit, and the second end of the filter capacitor is connected with the negative output end of the input terminal; and/or one or more free-wheeling diodes which are arranged at the input end of the charging regulating unit and are connected in parallel with each other; and the cathode of the freewheeling diode is connected with the input end of the charging regulation unit, and the anode of the freewheeling diode is connected with the negative output end of the input terminal.
The beneficial effects of the above technical scheme are: interference signals in an external power supply can be effectively filtered through the filter capacitor, and a rear-stage circuit is further protected through the fly-wheel diode.
In a preferred embodiment of the present invention, the charging adjustment module includes an alternating signal generation unit, a transformer, a first rectification unit, a switching tube, and a low-pass filtering unit; the first end of the primary side of the transformer is connected with the positive output end of the input terminal, the second end of the primary side of the transformer is connected with the drain electrode of the switching tube, the source electrode of the switching tube is connected with the negative output end of the input terminal, the grid electrode of the switching tube is connected with the output end of the alternating signal generating unit, and the starting end of the alternating signal generating unit is connected with the third signal output end of the control module; the first end of the secondary side of the transformer is connected with the positive input end of the first rectifying unit, the second end of the secondary side of the transformer is connected with the negative input end of the first rectifying unit, the output end of the first rectifying unit is connected with the input end of the low-pass filtering unit, and the output end of the low-pass filtering unit is connected with the charging input end of the battery module.
The beneficial effects of the above technical scheme are: the charging adjusting module is of an isolated type, and can effectively isolate damage of external power supply fluctuation or interference and the like to the battery module; the charging current or voltage is conveniently adjusted by adjusting the frequency, duty ratio and the like of the alternating signal output by the alternating signal generating unit. In a preferred embodiment of the present invention, the switch tube is used as the second changeover switch.
The beneficial effects of the above technical scheme are: the switch tube is used as the second change-over switch, so that the switch tube is used as a device for adjusting charging current or charging voltage and a device for starting or closing charging, the circuit structure is simplified, the number of devices is reduced, and the cost is saved.
In a preferred embodiment of the present invention, the first rectifying unit includes a first diode and a second diode; the anode of the first diode is connected with the first end of the secondary side of the transformer, the cathode of the first diode is respectively connected with the input end of the low-pass filtering unit and the cathode of the second diode, and the anode of the second diode is connected with the second end of the secondary side of the transformer.
The beneficial effects of the above technical scheme are: the full-wave rectification is carried out on the secondary side output signal of the transformer, and the circuit is simple and easy to implement.
In a preferred embodiment of the present invention, the low-pass filtering unit includes a first inductor and a first capacitor, a first end of the first inductor is connected to a cathode of the first diode and a cathode of the second diode respectively, a second end of the first inductor is connected to a first end of the first capacitor and a positive electrode of the battery module respectively, and a second end of the first capacitor is connected to a secondary side second end of the transformer and a negative electrode of the battery module respectively.
The beneficial effects of the above technical scheme are: high-frequency interference in the output signal of the first rectifying unit can be effectively filtered, and the battery module is protected.
The utility model discloses an in a preferred embodiment, still be provided with the second detection sensor who detects the positive voltage of battery module on every charging channel, the output of second detection sensor is connected with control module's battery test end.
The beneficial effects of the above technical scheme are: the charging condition of the battery module can be detected, the charging channel is cut off through the second change-over switch when the battery module of a certain charging channel is fully charged, overcharging is avoided, the battery module is protected, and charging balance is realized.
In a preferred embodiment of the present invention, the power supply further comprises a second rectifying unit, wherein the second rectifying unit comprises a diode a, a diode B, a diode C, and a diode D; the anode of the diode A is respectively connected with the positive output end of the input terminal and the cathode of the diode D, the cathode of the diode A is respectively connected with the cathode of the diode B and the input end of each charging channel charging adjusting unit, the anode of the diode B is respectively connected with the cathode of the diode C and the negative output end of the input terminal, and the anode of the diode C is respectively connected with the anode of the diode D and the common end of each charging channel charging adjusting unit; and the cathode of the diode A or the cathode of the diode B is used as the output end of the second rectifying unit, and the anode of the diode C or the anode of the diode D is used as the common end of the second rectifying unit.
The beneficial effects of the above technical scheme are: the second rectifying unit rectifies an external input power supply, so that the automatic charging distributor with the balance repairing function can input alternating current and direct current for charging through the second rectifying unit.
In order to achieve the above object of the present invention, according to a second aspect of the present invention, the present invention provides a charging system, including the automatic charging distributor with equalization repairing function and a plurality of battery modules, wherein a charging channel is connected to at least one battery module; the battery modules are connected or disconnected through a first change-over switch of the automatic charging distributor with the balance repairing function.
The beneficial effects of the above technical scheme are: the charging system can be automatically switched into parallel independent charging or series discharging according to the access condition of the external power supply, the problem of unbalanced charging is effectively solved, the service life of a battery module can be prolonged, and the charging efficiency is improved.
In a preferred embodiment of the present invention, the battery module includes a plurality of cells connected in series; and/or further includes a protection plate connected between the charging terminal of each battery module and the charging channel.
The beneficial effects of the above technical scheme are: through the utility model discloses an automatic charging distributor with balanced restoration function, when needing higher battery voltage, only need to increase the quantity of battery module, need not to increase the cluster number of electric core in the battery module and improve output voltage, avoid the battery module because of increasing the electric core quantity of inside series connection leads to the inconvenient installation use problem of volume increase, and to the withstand voltage requirement of protection shield device is high, the problem of reliability reduction; through the protection shield, improve battery module's the security of charging.
In a preferred embodiment of the present invention, the battery module is an electric core.
The beneficial effects of the above technical scheme are: the charging balance and the safety of the battery cell string are improved.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic diagram of an application of an automatic charging distributor with an equalization repairing function according to a preferred embodiment of the present invention;
fig. 2 is a schematic diagram of a hardware structure of an automatic charging distributor with an equalization repairing function according to a preferred embodiment of the present invention;
fig. 3 is a schematic diagram of a hardware structure of a control module according to a preferred embodiment of the present invention;
fig. 4 is a schematic diagram of a hardware circuit of an automatic charging distributor with equalization repairing function according to a preferred embodiment of the present invention;
fig. 5 is a schematic hardware circuit diagram of an automatic charging distributor with equalization repairing function according to another preferred embodiment of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.
In the description of the present invention, unless otherwise specified and limited, it is to be noted that the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, mechanically or electrically connected, or may be connected between two elements through an intermediate medium, or may be directly connected or indirectly connected, and specific meanings of the terms may be understood by those skilled in the art according to specific situations.
The utility model discloses an automatic charging distributor with balance repairing function, in an optimized implementation mode, the application schematic diagram of the automatic charging distributor with balance repairing function is shown in figure 1, the hardware structure is shown in figure 2, it includes input terminal, the first detection sensor for detecting whether the input terminal is connected with the external power supply, control module, and the first change-over switch connected between the battery modules; when all the first change-over switches are switched on, all the battery modules are connected in series, and when all the first change-over switches are switched off, the battery modules are independent; the charging device also comprises a plurality of parallel charging channels, one charging channel is connected with at least one battery module, and each battery module is provided with a charging channel correspondingly connected with the battery module.
Each charging channel is provided with a charging adjusting unit and a second change-over switch; the input end of the charging adjusting unit is connected with the output end of the input terminal, and the output end of the charging adjusting unit is connected with the charging input end of the battery module; when the second switch is turned on, the charging adjustment unit charges the battery module, and when the second switch is turned off, the charging adjustment unit does not charge the battery module.
The output end of the first detection sensor is connected with the power supply detection end of the control module, the first signal output end of the control module is connected with the control end of the first change-over switch, the second signal output end of the control module is connected with the control end of the second change-over switch, and the third signal output end of the control module is connected with the starting end of the charging adjusting unit.
In the present embodiment, the external power source is preferably, but not limited to, a charger, a USB cable, or the like.
In the present embodiment, the first detection sensor is preferably, but not limited to, a current sensor or a voltage sensor. The current sensor is preferably but not limited to an existing Hall current sensor, such as a Hall current sensor with model number SZ1K-50 of Shenzhen three-electric measurement and control company, and a three-phase alternating current sensor with model number MIK-SJI of American control. In a specific implementation, the connecting wire of the input terminal and the input end of the charging regulating unit passes through the testing hole of the current sensor to carry out measurement. The voltage sensor is preferably, but not limited to, a selected MIK-DZV single-phase direct-current voltage sensor or a selected series resistance voltage dividing network, an input end of the series resistance voltage dividing network is connected with an output end of the input terminal, and a voltage dividing output end of the series resistance voltage dividing network is used as an output end of the voltage sensor. In this embodiment, the charging adjustment unit is preferably, but not limited to, an existing charging chip and its peripheral circuit, such as a charging chip with model number TP4056, the start terminal of the charging adjustment unit is preferably, but not limited to, an enable pin of the charging chip, and the specific circuit may refer to a technical manual of a selected chip, which is not described herein again.
In the present embodiment, one first detection sensor may be provided for each charging path, or one first detection sensor may be shared by a plurality of charging paths.
In the present embodiment, the first change-over switch and the second change-over switch are electronic devices having a switching function, and are preferably, but not limited to, relays, MOS transistors, IGBTs, or the like. As shown in fig. 4, normally open two contacts of the first switch (K1) are respectively connected to the negative electrode and the positive electrode of two adjacent battery modules, specifically, the first contact is connected to the negative electrode of the previous battery module, the second contact is connected to the positive electrode of the next battery module, if there are n battery modules, n-1 first switches are required, and n is a positive integer greater than or equal to 2. The second switch is preferably, but not limited to, arranged between the output end of the charging adjusting unit and the charging end of the battery module to control the connection or disconnection of the output end of the charging adjusting unit and the charging end of the battery module; or the second change-over switch is arranged in a power supply loop of the charging adjusting unit, when the second change-over switch is switched on, the charging adjusting unit supplies power, and when the second change-over switch is switched off, the charging adjusting unit is powered off.
In a preferred embodiment, a second detection sensor for detecting the voltage of the positive electrode of the battery module is further arranged on each charging channel, and the output end of the second detection sensor is connected with the battery detection end of the control module.
In this embodiment, the second detection sensor is preferably, but not limited to, a wire connecting the positive electrode of the battery to the second comparator a2, or a dc voltage transmitter of an isolated output of the SIN-DZU type by the company union meter.
In this embodiment, preferably, the control module may include a plurality of control sub-modules, the control sub-modules correspond to the charging channels one to one, the control sub-modules may adopt a hardware structure as shown in fig. 3, and the control sub-modules include a first comparator a1, a second comparator a2, a first reference power supply Ref1, a second reference power supply Ref2, a first not gate, a second not gate, and an and gate. The output end of the first detection sensor is connected with the positive input end of a first comparator A1, the output end of a first reference power supply Ref1 is connected with the negative input end of a first comparator A1, and the output end of a first comparator A1 is respectively connected with the input end of a first NOT gate, the first input end of an AND gate and the starting end of a charging regulation unit; the output end of the second detection sensor is connected with the positive input end of a second comparator A2, the output end of a second reference power supply Ref2 is connected with the negative input end of a second comparator A2, the output end of a second comparator A2 is connected with the input end of a second NOT gate, and the output end of the second NOT gate is connected with the second input end of the AND gate; the output end of the AND gate is connected with the control end of the second change-over switch, and the output end of the first NOT gate is connected with the control end of the first change-over switch.
In this embodiment, the output voltage of the first reference power Ref1 is preferably, but not limited to, 0 to 1.2V, and specifically, the first reference power Ref1 may be a negative output terminal of the input terminal, or a reference voltage source with an output voltage of 0.1 to 1.2V. Since the charge capacity of the battery and the voltage of the positive electrode of the battery are in a monotonic correspondence relationship, the output voltage of the second reference power supply Ref2 is 80% to 100% of the voltage of the battery module on the charging channel at full charge, and the second reference power supply Ref2 can be formed by using a reference voltage chip of the conventional TI company and a peripheral circuit thereof. The first comparator a1 and the second comparator a2 are preferably, but not limited to, LM324, LM 339; the type of the and gate is preferably, but not limited to, SN74HC 08N; the model of the first not gate and the second not gate is preferably but not limited to CD4011 or CD 4081.
In this embodiment, after the external power source is connected to the input terminal, the first detection sensor outputs an electrical signal, the first comparator a1 outputs a high level to the input terminal of the first not gate, the first input terminal of the and gate, and the start terminal of the charging adjustment unit, the charging adjustment unit is started, the first not gate outputs a low level to the control terminal of the first switch, and the connection and disconnection between the battery modules are independent from each other; if the voltage of the battery module is lower than the output voltage of the second reference power supply Ref2, the second comparator a2 outputs a low level to the second not gate input terminal, the second not gate outputs a high level to the second input terminal of the and gate, the and gate outputs a high level to the control terminal of the second switch, the second switch is turned on, and the charging regulating unit provides a charging current to the battery module. On the contrary, when the external power supply is connected with the input terminal, if the voltage of the battery module is higher than the output voltage of the second reference power supply Ref2, the and gate outputs a low level to the second switch, the second switch is turned off, and the charging regulating unit does not provide the charging current to the battery module. When the external power supply is not connected with the input terminal, the first comparator A1 outputs a low level, the charging adjusting unit is not started, the first NOT gate outputs a high level, the first switch is switched on, all the battery modules are connected in series, the AND gate outputs a low level, and the second switch is switched off.
In a preferred embodiment, as shown in fig. 4, the charging control device further includes one or more filter capacitors arranged in parallel at the input end of the charging control unit; the first end of the filter capacitor is connected with the input end of the charging adjusting unit, and the second end of the filter capacitor is connected with the negative output end of the input terminal;
and/or one or more free-wheeling diodes which are arranged at the input end of the charging regulating unit and are connected in parallel with each other; the cathode of the freewheeling diode is connected with the input end of the charging regulation unit, and the anode of the freewheeling diode is connected with the negative output end of the input terminal.
In this embodiment, the filter capacitor may be a capacitor C2 or a plurality of parallel capacitor networks. In a preferred embodiment, as shown in fig. 3, the charging adjustment module includes an alternating signal generation unit, a transformer T1, a first rectification unit, a switching tube Q1, and a low pass filtering unit;
the first primary end of the transformer T1 is connected with the positive output end of the input terminal, the second primary end of the transformer T1 is connected with the drain electrode of the switching tube Q1, the source electrode of the switching tube Q1 is connected with the negative output end of the input terminal, the grid electrode of the switching tube Q1 is connected with the output end of the alternating signal generating unit, and the starting end of the alternating signal generating unit is connected with the third signal output end of the control module;
the first end of the secondary side of the transformer T1 is connected with the positive input end of the first rectifying unit, the second end of the secondary side of the transformer T1 is connected with the negative input end of the first rectifying unit, the output end of the first rectifying unit is connected with the input end of the low-pass filtering unit, and the output end of the low-pass filtering unit is connected with the charging input end of the battery module.
In the present embodiment, the alternating signal generating unit is preferably, but not limited to, a PWM signal generating unit or a square wave generating unit, such as an existing PWM control integrated chip SG3525 and its peripheral circuits, or a PWM signal generating circuit disclosed in chinese patent publication No. CN207283517U or CN207399575U may be selected.
In this embodiment, as shown in fig. 4, the switching transistor Q1 is preferably, but not limited to, a PMOS transistor.
In a preferred embodiment, the switching tube is used as the second changeover switch. And in the charging process, when the voltage of the battery module of the charging channel detected by the second detection sensor is higher than the output voltage of the second reference power supply, the AND gate outputs a low level to the gate of the switch tube Q1, and the switch tube is cut off, so that a primary side closed loop of the transformer T1 is cut off, and the charging current cannot be continuously supplied to the battery module.
In a preferred embodiment, as shown in fig. 4, the first rectifying unit includes a first diode D1 and a second diode D2; an anode of the first diode D1 is connected to a first end of a secondary side of the transformer T1, a cathode of the first diode D1 is connected to an input terminal of the low pass filter unit and a cathode of the second diode D2, respectively, and an anode of the second diode D2 is connected to a second end of the secondary side of the transformer T1.
In the present embodiment, the first diode D1 and the second diode D2 are preferably, but not limited to, schottky diodes.
In a preferred embodiment, the low pass filter unit includes a first inductor L1 and a first capacitor C1, a first terminal of the first inductor L1 is connected to a cathode of the first diode D1 and a cathode of the second diode D2, respectively, a second terminal of the first inductor L1 is connected to a first terminal of the first capacitor C1 and a positive electrode of the battery module, respectively, and a second terminal of the first capacitor C1 is connected to a second terminal of the secondary side of the transformer T1 and a negative electrode of the battery module, respectively.
In a preferred embodiment, the rectifier further comprises a second rectifying unit, as shown in fig. 5, the second rectifying unit comprises a diode a, a diode B, a diode C and a diode D; the anode of the diode A is respectively connected with the positive output end of the input terminal and the cathode of the diode D, the cathode of the diode A is respectively connected with the cathode of the diode B and the input end of each charging channel charging adjusting unit, the anode of the diode B is respectively connected with the cathode of the diode C and the negative output end of the input terminal, and the anode of the diode C is respectively connected with the anode of the diode D and the common end of each charging channel charging adjusting unit; and the cathode of the diode A or the cathode of the diode B is used as the output end of the second rectifying unit, and the anode of the diode C or the anode of the diode D is used as the common end of the second rectifying unit.
In the present embodiment, the external power source is preferably, but not limited to, an ac power source such as a commercial power outlet. The diodes a, B, C and D preferably, but not limited to, schottky diodes constitute a full-wave rectifier circuit, or alternatively, existing full-wave rectifier chips.
The utility model also discloses a charging system, in a preferred embodiment, the system block diagram is as shown in figure 1, including the above-mentioned automatic charging distributor with the equalization repairing function and a plurality of battery modules, a charging channel is connected with at least one battery module; the battery modules are connected or disconnected through a first change-over switch of the automatic charging distributor with the balance repairing function.
In a preferred embodiment, the battery module internally comprises a plurality of battery cells connected in series;
and/or further includes a protection plate connected between the charging terminal of each battery module and the charging channel.
In the present embodiment, as shown in fig. 4 and 1, the battery module is a battery pack. The protective plate is preferably, but not limited to, a 14-string 48V lithium battery protective plate from xuanyuan power company, and is disposed in front of the charging end of the battery module.
In this embodiment, preferably, also be provided with in battery module the utility model discloses an automatic distributor of charging with balanced restoration function utilizes series connection power supply or parallelly connected independent charging between the electric core of concatenating in distributor of charging's first change-over switch control battery module, and the difference problem of further improvement battery technology, balanced electric core charges.
In a preferred embodiment, the battery module is a cell.
In this embodiment, the battery cell is a single battery.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. An automatic charging distributor with an equalization repairing function is characterized by comprising an input terminal, a first detection sensor for detecting whether the input terminal is connected with an external power supply, a control module and a first change-over switch connected between battery modules; when all the first change-over switches are switched on, all the battery modules are connected in series, and when all the first change-over switches are switched off, the battery modules are independent; the system also comprises a plurality of parallel charging channels, and one charging channel is connected with at least one battery module;
each charging channel is provided with a charging adjusting unit and a second change-over switch; the input end of the charging adjusting unit is connected with the output end of the input terminal, and the output end of the charging adjusting unit is connected with the charging input end of the battery module; when the second change-over switch is switched on, the charging adjusting unit charges the battery module, and when the second change-over switch is switched off, the charging adjusting unit does not charge the battery module;
the output end of the first detection sensor is connected with the power supply detection end of the control module, the first signal output end of the control module is connected with the control end of the first change-over switch, the second signal output end of the control module is connected with the control end of the second change-over switch, and the third signal output end of the control module is connected with the starting end of the charging regulation unit.
2. The automatic charging distributor with equalization repairing function as claimed in claim 1, further comprising one or more filter capacitors disposed in parallel with each other at the input end of the charging adjusting unit; the first end of the filter capacitor is connected with the input end of the charging adjusting unit, and the second end of the filter capacitor is connected with the negative output end of the input terminal;
and/or one or more free-wheeling diodes which are arranged at the input end of the charging regulating unit and are connected in parallel with each other; and the cathode of the freewheeling diode is connected with the input end of the charging regulation unit, and the anode of the freewheeling diode is connected with the negative output end of the input terminal.
3. The automatic charging distributor with equalization repairing function according to claim 1, wherein the charging adjusting module comprises an alternating signal generating unit, a transformer, a first rectifying unit, a switching tube and a low-pass filtering unit;
the first end of the primary side of the transformer is connected with the positive output end of the input terminal, the second end of the primary side of the transformer is connected with the drain electrode of the switching tube, the source electrode of the switching tube is connected with the negative output end of the input terminal, the grid electrode of the switching tube is connected with the output end of the alternating signal generating unit, and the starting end of the alternating signal generating unit is connected with the third signal output end of the control module;
the first end of the secondary side of the transformer is connected with the positive input end of the first rectifying unit, the second end of the secondary side of the transformer is connected with the negative input end of the first rectifying unit, the output end of the first rectifying unit is connected with the input end of the low-pass filtering unit, and the output end of the low-pass filtering unit is connected with the charging input end of the battery module.
4. The automated charge distributor with equalization repairing function as claimed in claim 3, wherein said switch tube is used as the second switch.
5. The automated charge distributor with equalization restoration function according to claim 3, wherein the first rectifying unit includes a first diode and a second diode; the anode of the first diode is connected with the first end of the secondary side of the transformer, the cathode of the first diode is respectively connected with the input end of the low-pass filtering unit and the cathode of the second diode, and the anode of the second diode is connected with the second end of the secondary side of the transformer.
6. The automatic charging distributor with equalization repairing function as claimed in claim 5, wherein the low-pass filtering unit comprises a first inductor and a first capacitor, a first end of the first inductor is connected to a cathode of the first diode and a cathode of the second diode respectively, a second end of the first inductor is connected to a first end of the first capacitor and a positive electrode of the battery module respectively, and a second end of the first capacitor is connected to a second end of the secondary side of the transformer and a negative electrode of the battery module respectively.
7. The automated charge distributor with equalization repairing function according to claim 1, wherein a second detecting sensor for detecting the voltage of the positive electrode of the battery module is further provided on each charging channel, and the output end of the second detecting sensor is connected with the battery detecting end of the control module.
8. The automated charging distributor with equalization restoration function according to claim 1, further comprising a second rectifying unit, wherein the second rectifying unit comprises a diode a, a diode B, a diode C and a diode D; the anode of the diode A is respectively connected with the positive output end of the input terminal and the cathode of the diode D, the cathode of the diode A is respectively connected with the cathode of the diode B and the input end of each charging channel charging adjusting unit, the anode of the diode B is respectively connected with the cathode of the diode C and the negative output end of the input terminal, and the anode of the diode C is respectively connected with the anode of the diode D and the common end of each charging channel charging adjusting unit;
and the cathode of the diode A or the cathode of the diode B is used as the output end of the second rectifying unit, and the anode of the diode C or the anode of the diode D is used as the common end of the second rectifying unit.
9. A charging system comprising an automated charge distributor with equalization repair function according to any of claims 1-8 and a plurality of battery modules, at least one battery module being connected to a charging channel; the battery modules are connected or disconnected through a first change-over switch of the automatic charging distributor with the balance repairing function.
10. The charging system of claim 9, wherein the battery module comprises a plurality of cells connected in series;
and/or further includes a protection plate connected between the charging terminal of each battery module and the charging channel.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112744101A (en) * | 2020-12-25 | 2021-05-04 | 中国第一汽车股份有限公司 | Charging and discharging control system and method and vehicle |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112744101A (en) * | 2020-12-25 | 2021-05-04 | 中国第一汽车股份有限公司 | Charging and discharging control system and method and vehicle |
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