CN220043046U

CN220043046U - Feed control device and change electric cabinet based on storehouse battery charges

Info

Publication number: CN220043046U
Application number: CN202320562355.4U
Authority: CN
Inventors: 张华清; 陈军
Original assignee: Shenzhen Tuobang Automation Technology Co ltd
Current assignee: Shenzhen Tuobang Automation Technology Co ltd
Priority date: 2023-03-21
Filing date: 2023-03-21
Publication date: 2023-11-17
Anticipated expiration: 2033-03-21

Abstract

The utility model relates to a feed control device and a battery changing cabinet based on a battery in a charging bin, which comprises the following components: the device comprises a control module, an external power input detection module, a battery input module, a battery switch module and a power supply output module; the battery input module is connected with the power supply electric energy output by the battery in the charging bin; the external power input detection module detects external input voltage; the power supply output module is connected with a power supply end of the power conversion cabinet; and the control module controls the battery switch module to be conducted when the input detection signal is a low-level signal, and outputs power supply electric energy to the power conversion cabinet through the power supply output module for supplying power. The utility model is connected with the battery and the power supply interface of the power conversion cabinet, so that the power supply of the power conversion cabinet can be directly switched to the power supply of the power conversion cabinet by the battery when the commercial power of the power conversion cabinet is cut off, the standby battery is not required to be additionally increased, the bidirectional DCDC control method is not required to be adopted, the circuit architecture is simplified, the development and maintenance cost is reduced, and the standby power supply time is prolonged.

Description

Feed control device and change electric cabinet based on storehouse battery charges

Technical Field

The utility model relates to the technical field of battery changing cabinets, in particular to a charging bin battery-based feed control device and a battery changing cabinet.

Background

2. The three-wheeled battery car charging and changing cabinet (hereinafter referred to as a battery changing cabinet) is a sharing system with great market civil demands at present for users to directly replace undervoltage batteries with full-charge batteries. The system has the function of simultaneously charging a plurality of large-capacity batteries, and each battery is generally placed in an independent battery compartment. Each bin body is provided with a bin door, and the bin door is provided with an electronic lock to prevent the battery from being stolen.

The battery changing cabinet system is an unattended automatic system, when the system cannot normally supply power, a series of error operations can be caused, even the fire protection detection control unit is disabled, the battery fails, and a warning cannot be sent out timely to urgently process the failed battery, so that serious consequences occur. Therefore, the normal power supply of the power conversion cabinet system needs to be ensured.

In order to ensure the normal power supply of the power conversion cabinet system, two common methods exist at present:

first kind: through at the battery replacement cabinet internally mounted spare battery, switch to the inside spare battery of battery replacement cabinet when unable normal power supply, supply power by the spare battery.

Second kind: and the bidirectional DCDC control system is used for charging the battery during normal power supply, and the battery is used for supplying power to the battery-changing cabinet instead after sudden power failure.

For the first scheme, because the internal space of the battery changing cabinet is limited, a large-capacity battery cannot be used, and the manufacturing cost of the battery changing cabinet can be increased as the battery capacity is larger, the standby power supply time of the scheme is shorter, and a set of standby power control circuit is additionally arranged for the newly added standby battery, so that the equipment cost is further increased.

For the second scheme, the power supply of the power supply bidirectional DCDC control system is complex, so that the development and maintenance cost is high.

Disclosure of Invention

The utility model aims to solve the technical problem of providing a charging bin battery-based feed control device and a battery changing cabinet.

The technical scheme adopted for solving the technical problems is as follows: a feed control device based on a charging bin battery is constructed, comprising: the device comprises a control module, an external power input detection module, a battery input module, a battery switch module and a power supply output module;

the battery input module is connected with the battery in the charging bin and is used for accessing the power supply electric energy output by the battery in the charging bin; the external power input detection module is connected with the input detection end of the control module and is used for detecting external input voltage; the power supply output module is connected with a power supply end of the power conversion cabinet; the control module is respectively connected with the battery detection module, the battery switch module and the power supply output module;

the control module detects an input detection signal of the external power input detection module, controls the battery switch module to be conducted when the input detection signal is a low-level signal, and outputs the power supply electric energy to the power conversion cabinet through the power supply output module. In the charging bin battery-based power feeding control device of the present utility model, the battery input module includes: a plurality of sets of battery input terminals; each group of battery input terminals is connected with the battery in the charging bin and is used for accessing the power supply electric energy output by the battery.

In the charging bin battery-based power feeding control device of the present utility model, the battery switch module includes: a plurality of switch circuits provided corresponding to the plurality of sets of battery input terminals;

each switch circuit is connected with the control module, and each switch circuit is turned on or turned off according to a switch signal of the control module.

In the charging bin battery-based feed control device of the present utility model, each switching circuit includes: a battery enabling circuit;

the input end of the battery enabling circuit is connected with the enabling end of the control module, and the output end of the battery enabling circuit is connected with the anode of the battery in the charging bin through the battery input terminal;

and the battery enabling circuit controls the electric energy output of the battery connected with the battery enabling circuit according to the enabling signal output by the enabling end of the control module.

In the charging bin battery-based feeding control device of the present utility model, each of the switch circuits includes: the current limiting resistor, the voltage stabilizing tube, the switching tube and the diode;

the first end of the current-limiting resistor is connected with the control module, the second end of the current-limiting resistor is connected with the anode of the voltage-stabilizing tube, and the cathode of the voltage-stabilizing tube is connected with the battery input terminal; the first end of the switching tube is connected with the second end of the current-limiting resistor and the anode of the voltage stabilizing tube, the second end of the switching tube is connected with the battery, the third end of the switching tube is connected with the anode of the diode, and the cathode of the diode outputs the power supply electric energy.

In the charging bin battery-based feed control device of the present utility model, the control module includes: a control chip and a driving module; the driving module includes: a plurality of driving circuits provided corresponding to the switching circuits;

each driving circuit is connected with the control chip, and outputs a switching signal according to the driving signal output by the control chip so as to control the switching circuit correspondingly arranged to be switched on or switched off.

In the charging bin battery-based power feeding control device of the present utility model, each of the driving circuits includes: a driving resistor, a filter capacitor, a pull-down resistor and a driving tube;

the first end of the driving resistor is connected with the enabling output end of the control chip, the second end of the driving resistor is connected with the first end of the filter capacitor, the first end of the pull-down resistor and the first end of the driving tube, the second end of the filter capacitor is grounded, the second end of the pull-down resistor is grounded, and the third end of the driving tube is connected with a switching circuit correspondingly arranged.

The feeding control device based on the charging bin battery of the utility model further comprises: a buck module;

the voltage reducing module is respectively connected with the battery switch module and the power supply output module, and is used for outputting the power supplied to the power conversion cabinet through the power supply output module after the voltage reducing module is used for reducing the power supply energy.

In the feed control device based on the rechargeable cabin battery, the voltage reducing module is a unidirectional DCDC voltage reducing circuit.

In the charging bin battery-based feed control device of the present utility model, the unidirectional DCDC voltage reducing circuit includes: a buck chip, a fifteenth diode, a fifty-first resistor, a first MOS transistor, a fifty-third resistor, a third MOS transistor, a forty-eighth resistor, a forty-ninth resistor, a fifty-fourth resistor, a fifty-fifth resistor, a second inductor, and a twenty-second diode;

the grid electrode of the first MOS tube is connected with a sixth pin of the buck chip through the fifty resistor, the drain electrode of the first MOS tube is connected with the battery switch module, the source electrode of the first MOS tube is connected with the source electrode of the third MOS tube and is connected to the first end of the fifty-fourth resistor, the fifty-first resistor is connected between the grid electrode and the source electrode of the first MOS tube, the fifty-third resistor is connected between the grid electrode and the source electrode of the third MOS tube, the drain electrode of the third MOS tube is connected with the battery switch module, the grid electrode of the third MOS tube is also connected with the sixth pin of the buck chip through the fifteenth diode, and the grid electrode of the first MOS tube is connected with the sixth pin of the buck chip through the fifteenth diode;

an eighth pin of the buck chip is connected with a first end of the fifty-fourth resistor through the forty-eighth resistor and the forty-ninth resistor in sequence, a second end of the fifty-fourth resistor is grounded, and the fifty-fifth resistor is connected with the fifty-fourth resistor in parallel; the fourth end of the second inductor is connected with the second end of the fifty-fourth resistor, the third end of the second inductor is connected with the third end of the twenty-second diode, and the second end of the twenty-second diode is connected with the power supply output module.

The utility model also provides a battery changing cabinet which comprises the charging bin battery-based feed control device.

The charging bin battery-based feed control device and the battery changing cabinet have the following beneficial effects: comprising the following steps: the device comprises a control module, an external power input detection module, a battery input module, a battery switch module and a power supply output module; the battery input module is connected with the power supply electric energy output by the battery in the charging bin; the external power input detection module detects external input voltage; the power supply output module is connected with a power supply end of the power conversion cabinet; and the control module controls the battery switch module to be conducted when the input detection signal is a low-level signal, and outputs power supply electric energy to the power conversion cabinet through the power supply output module for supplying power. The utility model is connected with the battery and the power supply interface of the power conversion cabinet, so that the power supply of the power conversion cabinet can be directly switched to the power supply of the power conversion cabinet by the battery when the commercial power of the power conversion cabinet is cut off, the standby battery is not required to be additionally increased, the bidirectional DCDC control method is not required to be adopted, the circuit architecture is simplified, the development and maintenance cost is reduced, and the standby power supply time is prolonged.

Drawings

The utility model will be further described with reference to the accompanying drawings and examples, in which:

fig. 1 is a schematic block diagram of a charging bin battery-based feed control device provided by an embodiment of the present utility model;

FIG. 2 is a circuit diagram of a control chip provided by an embodiment of the present utility model;

FIG. 3 is a circuit diagram of a voltage conversion circuit according to an embodiment of the present utility model;

fig. 4 and 5 are circuit diagrams of a driving circuit according to an embodiment of the present utility model;

FIG. 6 is a circuit diagram of a switching circuit provided by an embodiment of the present utility model;

FIG. 7 is a circuit diagram of a battery interface provided by an embodiment of the present utility model;

FIG. 8 is a circuit diagram of an input switching circuit provided by an embodiment of the present utility model;

fig. 9 and 10 are circuit diagrams of a unidirectional DCDC voltage reduction circuit provided by an embodiment of the present utility model;

fig. 11 and 12 are circuit diagrams of a 485 interface module according to an embodiment of the utility model;

fig. 13 and 14 are circuit diagrams of a CAN interface module provided in an embodiment of the present utility model.

Detailed Description

For a clearer understanding of technical features, objects and effects of the present utility model, a detailed description of embodiments of the present utility model will be made with reference to the accompanying drawings.

Referring to fig. 1, fig. 1 is a schematic block diagram of an alternative embodiment of a charging bin battery-based power supply control device provided by the present utility model.

Specifically, as shown in fig. 1, the feeding control device based on the charging bin battery comprises: the device comprises a control module 10, an external power input detection module 11, a battery input module 12, a battery switch module 13 and a power supply output module 16.

The battery input module 12 is connected with the battery in the charging bin and is used for accessing the power supply electric energy output by the battery in the charging bin; the external power input detection module 11 is connected with an input detection end of the control module 10 and is used for detecting external input voltage; the power supply output module 16 is connected with a power supply end of the power conversion cabinet; the control module 10 is respectively connected with the battery detection module 14, the battery switch module 13 and the power supply output module 16; the control module 10 detects an input detection signal of the external power input detection module 11, controls the battery switch module 13 to be turned on when the input detection signal is a low-level signal, and outputs power supply electric energy to the power conversion cabinet through the power supply output module 16.

The external power input detection module 11 is configured to detect an external input voltage (i.e., a mains input voltage) of the power conversion cabinet, and the control module 10 determines whether the power conversion cabinet is powered off according to an input detection signal generated by the external power input detection module 11, so that when the power conversion cabinet is powered off, the power supply electric energy output by the battery is connected through the battery input module 12 and is output to the power conversion cabinet through the power supply output module 16 to supply power to the power conversion cabinet. When the input detection signal of the external power input detection module 11 is at a low level, the control module 10 controls the battery switch module 13 to be turned on, so that the power supply electric energy output by the battery is transmitted to the power supply output module 16 through the battery switch module 13 after being connected through the battery input module 12, and is output to the power conversion cabinet by the power supply output module 16. In the embodiment of the utility model, the battery input module 12 is used for being connected with each battery in the charging bin, so that when the power supply cabinet is powered off, the output voltage of the battery in the charging bin is connected through the battery input module 12, and then the power supply cabinet is powered on through the battery in the charging bin. Wherein the battery input module 12 includes: a plurality of sets of battery input terminals; each group of battery input terminals is connected with the battery in the charging bin and is used for accessing the power supply electric energy output by the battery.

In the embodiment of the present utility model, the battery switch module 13 includes: a plurality of switch circuits provided corresponding to the plurality of sets of battery input terminals; each switch circuit is connected with the control module 10, and is turned on or turned off according to a switch signal of the control module 10.

In an embodiment of the present utility model, each switching circuit includes: a battery enabling circuit.

The input end of the battery enabling circuit is connected with the enabling end of the control module, and the output end of the battery enabling circuit is connected with the anode of the battery in the charging bin through the battery input terminal; and the battery enabling circuit controls the electric energy output of the battery connected with the battery enabling circuit according to the enabling signal output by the enabling end of the control module.

Specifically, when the control module 10 outputs a high level signal to enable the enabling circuit to be at a high level, the battery in the charging bin can feed the battery to the battery-changing cabinet, and when the control module 10 outputs a low level signal to enable the enabling circuit to be at a low level, the battery in the charging bin can not feed the battery-changing cabinet. By arranging the enabling circuit, safety protection can be added to the feed control device, and even if the feed control device is connected with the current output end of the battery in the charging bin, the battery can not discharge under the condition of no enabling.

Optionally, in some embodiments, each of the switching circuits includes: current limiting resistor, voltage stabilizing tube, switch tube and diode. The first end of the current-limiting resistor is connected with the control module 10, the second end of the current-limiting resistor is connected with the anode of the voltage-stabilizing tube, and the cathode of the voltage-stabilizing tube is connected with the battery input terminal; the first end of the switching tube is connected with the second end of the current-limiting resistor and the anode of the voltage stabilizing tube, the second end of the switching tube is connected with the battery, the third end of the switching tube is connected with the anode of the diode, and the cathode of the diode outputs power supply electric energy.

Optionally, in an embodiment of the present utility model, the control module 10 includes: a control chip and a driving module; the driving module includes: and a plurality of driving circuits provided corresponding to the switching circuits.

Wherein each driving circuit includes: a driving resistor, a filter capacitor, a pull-down resistor and a driving tube. The first end of the driving resistor is connected with the enabling output end of the control chip, the second end of the driving resistor is connected with the first end of the filter capacitor, the first end of the pull-down resistor and the first end of the driving tube, the second end of the filter capacitor is grounded, the second end of the pull-down resistor is grounded, and the third end of the driving tube is connected with a switch circuit which is correspondingly arranged.

Further, in an embodiment of the present utility model, the feeding control device based on the charging bin battery further includes: a step-down module 15; the voltage reducing module 15 is respectively connected with the battery switch module 13 and the power supply output module 16, and the voltage reducing module 15 is used for outputting power to the power conversion cabinet through the power supply output module 16 after performing voltage reducing treatment on power supply electric energy.

Alternatively, in the embodiment of the present utility model, the step-down module 15 is a unidirectional DCDC step-down circuit.

Further, in an embodiment of the present utility model, the feeding control device based on the charging bin battery further includes: a battery detection module 14. The battery detection module 14 is configured to detect electrical quantity information of a battery in the charging bin, and send the detected electrical quantity information to the control chip, so that the control chip selects one or more suitable batteries in the charging bin according to the electrical quantity information of the battery to supply power to the battery replacement cabinet. Optionally, in the embodiment of the present utility model, the battery detection module 14 may perform information acquisition in a CAN communication manner, or may also perform information acquisition in a 485 communication manner.

The charging bin battery-based feed control device provided by the utility model only needs a one-way DCDC voltage reduction circuit, can realize detection of the mains supply condition of the battery and the electric quantity state of the battery through connection with the power supply input port of the battery in the charging bin, the power supply input port of the battery replacement cabinet and the communication interface of the battery, and can directly switch to the battery in the charging bin to supply power to the battery replacement cabinet when the mains supply of the battery replacement cabinet is abnormal (such as power failure), thereby ensuring normal power supply of the battery replacement cabinet.

Furthermore, as the unidirectional DCDC is adopted, compared with bidirectional DCDC control, the power supply structure is simple, the development and maintenance cost is greatly reduced, and meanwhile, the feed control device is independent of a power conversion cabinet control system, and has stable operation and high reliability.

Furthermore, when the mains supply is normal, the unidirectional DCDC step-down circuit does not work, and only continuously detects the mains supply condition of the power conversion cabinet, so that the loss can be further reduced.

In addition, if when the current power conversion cabinet is in connection communication with other power conversion cabinets, when the mains supply is abnormal, the battery in the charging bin supplies power to the current power conversion cabinet and simultaneously supplies power to other power conversion cabinets in communication with the current power conversion cabinet.

In one embodiment, as shown in fig. 2-14, a circuit diagram of one embodiment is provided for the present utility model.

Specifically, as shown in fig. 2, U6 is a control chip, where B1-EN, … …, and B16-EN of the control chip respectively output driving signals for driving the corresponding driving circuits. Alternatively, in this embodiment, the control chip may be a control chip of GD32F 103. The utility model can directly use the existing functions of the existing GD32F103 chip to realize the related functions without any program improvement on the control chip.

As shown in fig. 3, U1 is a voltage conversion chip. The U1 is mainly configured to convert 12V output by the buck module 15 into 3.3V, where the 3.3V is used to supply power to the U6, so as to ensure normal operation of the U6.

As shown in fig. 4 and 5, are circuit diagrams of the driving circuit, wherein fig. 4 and 5 show circuit diagrams of a 16-way driving circuit, which is identical to fig. 4 and 5 when there are more ways. The number of the driving circuits can be determined according to the number of the batteries in the charging bin.

Specifically, as shown in fig. 4 and 5, an example of any one of the driving circuits in fig. 4 will be described. As shown in fig. 4, the driving circuits B1 to EN are described. Wherein, B1-EN is connected to pin 21 of the control chip, resistor R97 is the driving resistor, resistor R98 is the pull-down resistor, capacitor C38 is the filter capacitor, and triode Q80 is the driving tube. As shown in fig. 4, when B1-EN is at a high potential, the transistor Q80 is turned on, at this time, the M1 signal output from the collector of the transistor Q80 is at a high level, and the M1 signal is sent to a switching circuit correspondingly arranged to the transistor Q80 for controlling the switching circuit correspondingly arranged to be turned on, where the emitter of the transistor Q80 is connected to the eighth pin of the control chip. As shown in fig. 4, the control chip drives the driving circuit by controlling the on-off state of the transistor Q80, and then drives the switching circuit correspondingly arranged to be turned on or off by the driving circuit. It will be appreciated that the driving principle of the other driving circuits in fig. 4 and 5 is the same as that described above, and will not be repeated here.

As shown in fig. 6, a circuit schematic of 8 switching circuits and a circuit schematic of 8 enabling circuits are given. Of course, it is understood that the circuit configuration of the other switching circuits is the same as that of any one of the switching circuits in fig. 6. Likewise, the circuit configuration of the other enable circuit is the same as that of any one of the enable circuits in fig. 6.

Specifically, as shown in fig. 6, each of the switching circuits includes: current limiting resistor, voltage stabilizing tube, switch tube and diode. The following describes any one of the switching circuits in fig. 6 (the switching circuit of Q40 is described). As shown in fig. 6, the resistor R174 is a current limiting resistor, the D156 is a voltage regulator, the MOS transistor Q40 is a switching transistor, and the D147 is a diode, and further, as shown in fig. 6, each switching circuit further includes a series resistor (R161 and a diode D66). The first end of the resistor R174 receives the M1 signal (i.e., connects with the collector of the triode Q80), the second end of the resistor R174 connects with the anode of the voltage stabilizing tube D156 and the gate of the MOS tube Q40, the source of the MOS tube Q40 connects with the anode of the battery B1 in the charging bin, the drain of the MOS tube Q40 connects with the anode of the diode D147, the cathode of the diode D147 outputs 72V (the 72V is the power supply energy output by the battery), and the drain of the MOS tube Q40 is also connected to the BC1 end of the battery B1 through the resistor R161 and the diode D66.

As shown in fig. 6, when M1 is a high level signal, the MOS transistor Q40 is turned on, at this time, the positive electrode of the battery B1 outputs a voltage, which is output to the step-down module 15 after passing through the MOS transistor Q40 and the diode D147, and the voltage output by the battery B1 returns to the BC1 end of the battery B1 after passing through the MOS transistor Q40, through the resistor R161 and the diode D66 in sequence. It will be appreciated that the operation principle of the other switch circuits in fig. 6 is the same as that described above, and will not be repeated here. As shown in fig. 7, a schematic circuit diagram of the battery interface is shown. Taking battery B1 as an example, the positive electrode (first pin) of battery B1 is connected to the first end of resistor R174, and the BC1 end (second pin) of battery B1 is connected to the cathode of diode D66.

Specifically, each enable circuit includes an enable resistor. The description will be given with reference to any one of the enable circuits shown in fig. 6, and the description will be given with reference to an enable circuit connected to the battery B1, in which the enable resistor is the resistor R175, as shown in fig. 6. The input end of the resistor R175 is connected to the M1 signal (the M1 signal is an enable signal output by the control module), and the output end of the resistor R175 is connected to the positive electrode of the resistor B1 (i.e., the seventh pin of B1 in fig. 7). As shown in fig. 6 and fig. 7, when M1 is at a high level, the high-level signal is transmitted to the positive electrode of the battery B1 through the resistor R175, so that the battery B1 is enabled to discharge the battery B1, and meanwhile, the high-level signal is also transmitted to the gate of the MOS transistor Q40 through the resistor R174, so that the MOS transistor Q40 is turned on, and the power supply power output by the battery B1 can supply power to the power conversion cabinet through the MOS transistor Q40 and the diode D174.

It can be appreciated that by setting the enabling circuit, the battery can be discharged only when M1 is at a high level, namely, when the positive electrode of the battery is at a high level, so that the safety protection of the system is improved.

As shown in fig. 8, a circuit diagram of the input switch circuit is shown. The input switch circuit is used for controlling the on-off of the voltage reducing module 15, namely when the input switch circuit is conducted, the voltage reducing module 15 works; when the input switching circuit is turned off, the step-down module 15 does not operate. In the embodiment of the utility model, the input switch circuit is equivalent to a two-stage switch, namely, the utility model is provided with the two-stage switch, the first-stage switch is the switch circuit shown in fig. 6, and the second-stage switch is the input switch circuit, so that the safety of the system can be further improved by arranging the two-stage switch. Of course, it will be appreciated that in other embodiments, further layers of switches may be provided, this embodiment being merely illustrative.

Specifically, as shown in fig. 8, the input switch circuit includes: resistor R170, resistor R171, transistor Q79, resistor R172, resistor R173, regulator D155, MOS Q52, diode D17, and fuse F2.

The input terminal of the fuse F2 is connected to the output terminal of each switching circuit (e.g., the cathode of the diode D147 in fig. 6. It is to be noted that the output terminals of the other switching circuits in fig. 6 (e.g., the cathode of the diode D158, the cathode of the diode D161, etc.)) are all connected to the fuse F2. The output end of the fuse tube F2 is connected with the anode of the diode D17, the cathode of the diode D17 is connected with the first end of the resistor R173 and the cathode of the voltage stabilizing tube D155, the source of the MOS tube Q52 is connected with the cathode of the diode D17, and the drain of the MOS tube Q52 outputs 72V of power supply electric energy. The input end of the resistor R170 is connected with a 53 rd pin (BM-EN) of the control chip, the output end of the resistor R170 is connected with the base electrode of the triode Q79 and the first end of the resistor R171, the second end of the resistor R171 is grounded, the emitter electrode of the triode Q79 is grounded, the collector electrode of the triode Q79 is connected with the second end of the resistor R173 and the first end of the resistor R172, and the second end of the resistor R172 is connected with the anode electrode of the voltage stabilizing tube D155 and the grid electrode of the MOS tube Q52.

As shown in fig. 8, when the BM-EN signal output from the 53 rd pin of the control chip is at a high level, the transistor Q79 is turned on, and at this time, the MOS transistor Q52 is turned on, so that 72VIN output from the battery can be input into the buck module 15.

As shown in fig. 9 and 10, the unidirectional DCDC buck circuit includes: the voltage-dropping chip U10, the fifteenth diode D15, the fifty resistor R50, the fifty-first resistor R51, the first MOS transistor Q1, the fifty-third resistor R53, the third MOS transistor Q3, the forty-eighth resistor R48, the forty-ninth resistor R49, the fifty-fourth resistor R54, the fifty-fifth resistor R55, the second inductor L2 and the twenty-second diode D22.

The grid electrode of the first MOS tube Q1 is connected with a sixth pin of the buck chip U10 through a fifty-first resistor R50, the drain electrode of the first MOS tube Q1 is connected with the battery switch module 13, the source electrode of the first MOS tube Q1 is connected with the source electrode of the third MOS tube Q3 and is connected to the first end of a fifty-fourth resistor R54, the fifty-first resistor R51 is connected between the grid electrode and the source electrode of the first MOS tube Q1, the fifty-third resistor R53 is connected between the grid electrode and the source electrode of the third MOS tube Q3, the drain electrode of the third MOS tube Q3 is connected with the battery switch module 13, the grid electrode of the third MOS tube Q3 is also connected with the sixth pin of the buck chip U10 through a fifteenth diode D15, and the grid electrode of the first MOS tube Q1 is connected with the sixth pin of the buck chip U10 through a fifteenth diode D15; the eighth pin of the buck chip U10 is connected with the first end of a fifty-fourth resistor R54 sequentially through a forty-eight resistor R48 and a forty-nine resistor R49, the second end of the fifty-fourth resistor R54 is grounded, and a fifty-fifth resistor R55 is connected with the fifty-fourth resistor R54 in parallel; the fourth end of the second inductor L2 is connected to the second end of the fifty-fourth resistor R54, the third end of the second inductor L2 is connected to the third end of the twenty-second diode D22, and the second end of the twenty-second diode D22 is connected to the power supply output module 16.

As shown in fig. 11 and 12, a circuit diagram of a 485 interface module is shown, and the 485 interface module can collect electric quantity information of a battery in a charging bin. Namely, when the battery in the charging bin is 485 communication, the 485 interface module can be used for collecting the electric quantity information of the battery.

Specifically, as shown in fig. 11 and 12, U2 is an isolated power supply for providing an electrical signal to the 485 interface module. U6 is a signal isolation chip, and is used for isolating serial port output signals (UART1_RX and UART1_TX) of the control chip from 485 output signals (RS485_B and RS485_A). U7 is the signal conversion chip for converting serial port signal into 485 signal. Namely, serial port signals output by UART1_RX and UART1_TX of the control chip are converted into 485 signals.

Fig. 13 and 14 are schematic circuit diagrams of a CAN interface module, through which collection of electric quantity information of a battery in a charging bin CAN be achieved. Namely, when the battery in the charging bin is in CAN communication, the collection of the electric quantity information of the battery CAN be realized through the CAN interface module.

Specifically, as shown in fig. 13 and 14, U3 is an isolated power supply for providing an electrical signal to the CAN interface module. U8 is a signal isolation chip for isolating serial port output signals (CANRX and CANTX) of the control chip from CAN output signals (CANL and CANH). U9 is a signal conversion chip for converting serial port signals into CAN signals. Namely, serial port signals output by CANRX and CANTX of the control chip are converted into CAN signals.

Further, the utility model also provides a battery changing cabinet, which comprises the charging bin battery-based feed control device disclosed by the embodiment of the utility model.

In the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant points refer to the description of the method section.

Those of skill would further appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both, and that the various illustrative elements and steps are described above generally in terms of functionality in order to clearly illustrate the interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present utility model.

The steps of a method or algorithm described in connection with the embodiments disclosed herein may be embodied directly in hardware, in a software module executed by a processor, or in a combination of the two. The software modules may be disposed in Random Access Memory (RAM), memory, read Only Memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art.

The above embodiments are provided to illustrate the technical concept and features of the present utility model and are intended to enable those skilled in the art to understand the content of the present utility model and implement the same according to the content of the present utility model, and not to limit the scope of the present utility model. All equivalent changes and modifications made with the scope of the claims should be covered by the claims.

Claims

1. A charging bin battery-based feed control device, comprising: the device comprises a control module, an external power input detection module, a battery input module, a battery switch module and a power supply output module;

the battery input module is connected with the battery in the charging bin and is used for accessing the power supply electric energy output by the battery in the charging bin; the external power input detection module is connected with the input detection end of the control module and is used for detecting external input voltage; the power supply output module is connected with a power supply end of the power conversion cabinet; the control module is respectively connected with the battery switch module and the power supply output module;

the control module detects an input detection signal of the external power input detection module, controls the battery switch module to be conducted and enables a battery connected with the battery input module to discharge when the input detection signal is a low-level signal, and outputs the power supply electric energy to the power conversion cabinet through the power supply output module.

2. The charging bin battery-based feed control device according to claim 1, wherein the battery input module comprises: a plurality of sets of battery input terminals; each group of battery input terminals is connected with the battery in the charging bin and is used for accessing the power supply electric energy output by the battery.

3. The charging bin battery-based feed control device according to claim 2, wherein the battery switch module comprises: a plurality of switch circuits provided corresponding to the plurality of sets of battery input terminals;

4. A charging-bin-battery-based feed control device according to claim 3, wherein each switching circuit comprises: a battery enabling circuit;

5. A charging-bin-battery-based feed control device according to claim 3, wherein each of the switch circuits includes: the current limiting resistor, the voltage stabilizing tube, the switching tube and the diode;

6. The charging bin battery-based feed control device according to claim 5, wherein the control module comprises: a control chip and a driving module; the driving module includes: a plurality of driving circuits provided corresponding to the switching circuits;

7. The charging bin battery-based feed control device according to claim 6, wherein each of the driving circuits includes: a driving resistor, a filter capacitor, a pull-down resistor and a driving tube;

8. The charging bin battery-based power feeding control device according to claim 1, further comprising: a buck module;

9. The charging bin battery-based feed control device according to claim 8, wherein the step-down module is a unidirectional DCDC step-down circuit.

10. The charging-bin-battery-based power feeding control device according to claim 9, wherein the unidirectional DCDC voltage reducing circuit comprises: a buck chip, a fifteenth diode, a fifty-first resistor, a first MOS transistor, a fifty-third resistor, a third MOS transistor, a forty-eighth resistor, a forty-ninth resistor, a fifty-fourth resistor, a fifty-fifth resistor, a second inductor, and a twenty-second diode;

11. A battery-changing cabinet, characterized by comprising the charging-bin-battery-based feed control device according to any one of claims 1-10.