CN209345013U - A kind of electrical power distribution apparatus and equipment - Google Patents

Abstract

The utility model discloses a kind of electrical power distribution apparatus and equipment, comprising: control module and at least one distribution group module, each distribution group module include the first distribution module, the second distribution module and bidirectional thyristor；Wherein, control module is separately connected the first end of the first distribution module and the first end of the second distribution module, and the first end of bidirectional thyristor connects the second end of the first distribution module, and the second end of bidirectional thyristor connects the second end of the second distribution module.When the first distribution module or the second distribution module break down, bidirectional thyristor conducting allows the module to break down to continue normal output signal.The technical solution of the utility model solves the problems, such as not restoring in time when the wherein all the way distribution module in the prior art in multi-channel DC output breaks down, and improves the safety and reliability of electrical power distribution apparatus.

Description

A kind of electrical power distribution apparatus and equipment

Technical field

The utility model embodiment is related to power supply control technology field more particularly to a kind of electrical power distribution apparatus and equipment.

Background technique

In a power-supply system, input power is converted to out-put supply required for load by prime modules. In practical applications, many occasions need to use multiple power supplies, and such case just needs to reallocate prime out-put supply, For subsequent load use.

With the development of electronic technology, automobile oneself through more more and more universal.Electrical function on automobile gradually enriches, so that Electrical equipment on automobile is more and more, and it is a Xiang Feichang that safety, which reasonably carries out power distribution to the electrical equipment on automobile again, Important work.Traditional power distribution mode is that power supply is realized by power distribution panel.Such DC power supply distributes mould Block only has simple power switch to go to control the output on each road, and the power distribution also having is that distribution branch and control circuit separate. Then, once control circuit is damaged, entire power distribution system may be influenced, and distribution module breaks down all the way at certain When, it can not restore to work normally in time, reduce the reliability of power distribution.

Utility model content

In view of this, the present invention provides a kind of electrical power distribution apparatus and equipment, to solve in the prior art in multichannel The problem of wherein all the way distribution module in direct current output can not be restored in time when breaking down, improves the peace of electrical power distribution apparatus Full property and reliability.

In a first aspect, the utility model embodiment provides a kind of electrical power distribution apparatus, comprising: control module and at least one A distribution group module, each distribution group module include the first distribution module, the second distribution module and bidirectional thyristor；Wherein, institute It states control module and is separately connected the first end of first distribution module and the first end of second distribution module, it is described two-way The first end of thyristor connects the second end of first distribution module, the second end connection described second of the bidirectional thyristor The second end of distribution module；

When first distribution module breaks down, the bidirectional thyristor conducting, so that first distribution module Second end export the output signal of second distribution module；It is described two-way when second distribution module breaks down Turn on thyristors, so that the second end of second distribution module exports the output signal of first distribution module.

Further, described device further include: DC power supplier and out-put supply interface module；Wherein, DC power supply The output end of module is separately connected the input terminal of first distribution module and the input terminal of second distribution module, described defeated Out the input terminal of power supply interface module be separately connected first distribution module output end and second distribution module it is defeated Outlet.

Further, which is characterized in that the control module includes: control chip, sampling unit and driving unit；It is described The first end of control chip connects the first end of the sampling unit, and the second end of the control chip connects the driving unit First end；The second end of the driving unit is separately connected the first end of first distribution module and described second and distributes mould The first end of block, the third end of the driving unit connect the first end of the sampling unit；Wherein, the control chip according to The sampled signal of sampling unit acquisition generates control signal, and the control signal is exported to the driving unit, with Trigger the driving unit according to the control signal drive the first distribution module at least one described distribution group module and The work of second distribution module.

Further, the control module further include: power conversion unit and output display unit；Wherein, the power supply The first end of converting unit connects the output end of the DC power supplier, described in the second end connection of the power conversion unit The third end of chip is controlled, the 4th end of the control chip connects the output display unit.

Further, first distribution module includes: the first translation circuit and first diode, the second distribution mould Block includes: the second translation circuit and the second diode；Wherein, the input terminal of first translation circuit and the second transformation electricity The input terminal on road is separately connected the output end of the DC power supplier；The first end connection described first of the bidirectional thyristor The output end of translation circuit, the second end of the bidirectional thyristor connect the output end of second translation circuit；Described first The anode of diode connects the output end of first translation circuit, and the cathode of first diode connects the out-put supply interface The input terminal of module；The anode of second diode connects the output end of second translation circuit, the yin of the second diode Pole connects the input terminal of the out-put supply interface module.

Further, the sampling unit includes: first sensor and second sensor；Wherein, the first sensor First end connect the output end of the DC power supplier, the second end connection of the first sensor the first transformation electricity The input terminal on road；The first end of the second sensor connects the output end of the DC power supplier, the second sensor Second end connect the input terminal of first translation circuit.

Further, the translation circuit includes: the first transistor, third diode, the first inductance and first capacitor；Its In, the first end of the first transistor connects the anode of the DC power supplier, the second end point of the first transistor The cathode of the third diode and the first end of first inductance are not connected；The cathode of the third diode is separately connected The first end of the cathode of the DC power supplier and the first capacitor；The second end of first inductance is separately connected described The second end of first capacitor and the bidirectional thyristor；The sampling unit acquires the temperature value of the first transistor, works as institute When stating temperature value greater than preset temperature value, the connection of the driving unit cutting and the control chip, so that the control core Piece stopping exports the control signal to the driving unit.

Further, the driving unit includes: optocoupler subelement and enhancing driven submodule；Wherein, optocoupler The first end of unit is connect with the second end of the control chip, and the second end of the optocoupler subelement connects the enhancing driving The second end of the first end of subelement, the enhancing driving subelement is separately connected first end and the institute of first allocation unit State the first end of the second allocation unit.

Further, the driving unit further include: driving protection subelement；Wherein,

The first end of the driving protection subelement connects the first end of the sampling unit, and subelement is protected in the driving Second end connect the first end of the optocoupler subelement.

Second aspect, the utility model embodiment additionally provide a kind of equipment, and the equipment includes such as above-mentioned first aspect Described in electrical power distribution apparatus.

The electrical power distribution apparatus and equipment provided in above-described embodiment, comprising: control module and at least one distribution module Group, each distribution module group include the first distribution module, the second distribution module and bidirectional thyristor；Control module is separately connected The first end of the first end of the first end of one distribution module and the second distribution module, bidirectional thyristor connects the first distribution module Second end, the second end of bidirectional thyristor connect the second end of the second distribution module.It is double when the first distribution module breaks down To turn on thyristors, so that the second end of the first distribution module exports the output signal of the second distribution module；When the second distribution mould When block breaks down, bidirectional thyristor conducting, so that the second end of the second distribution module exports the output letter of the first distribution module Number.As it can be seen that technical solution provided in this embodiment, when a distribution module breaks down wherein, bidirectional thyristor conducting makes The module of failure can continue normal output signal, solve wherein dividing all the way in multi-channel DC output in the prior art The problem of cannot restoring in time when breaking down with module, improve the safety and reliability of electrical power distribution apparatus.

Detailed description of the invention

Fig. 1 is the functional block diagram of one of the utility model embodiment electrical power distribution apparatus；

Fig. 2 is the functional block diagram of the electrical power distribution apparatus of one of the utility model alternative embodiment；

Fig. 3 is the functional block diagram of one of the utility model alternative embodiment electrical power distribution apparatus；

Fig. 4 is the structural schematic diagram of one of the utility model embodiment distribution group module；

Fig. 5 is the structural schematic diagram of one of the utility model alternative embodiment translation circuit；

Fig. 6 a is the waveform diagram of 50% duty ratio Starting mode output voltage in the utility model embodiment；

Fig. 6 b is the waveform diagram of the two-part soft starting mode output voltage in the utility model embodiment；

Fig. 7 a is the waveform diagram of the 50% duty ratio Starting mode output electric current in the utility model embodiment；

Fig. 7 b is the waveform diagram of the two-part soft starting mode output electric current in the utility model embodiment；

Fig. 8 is the course of work schematic diagram of BUCK translation circuit when opening mode in the utility model embodiment；

The course of work schematic diagram of BUCK translation circuit when Fig. 9 is the shutdown mode in the utility model embodiment；

Figure 10 is the structural schematic diagram of the driving circuit in the utility model embodiment；

Figure 11 is the schematic diagram of the distribution switch in the utility model embodiment.

Specific embodiment

The utility model is described in further detail with reference to the accompanying drawings and examples.It is understood that herein Described specific embodiment is used only for explaining the utility model, rather than the restriction to the utility model.It further needs exist for It is bright, part relevant to the utility model is illustrated only for ease of description, in attached drawing rather than entire infrastructure.

Fig. 1 is the functional block diagram of one of the utility model embodiment electrical power distribution apparatus；The present embodiment is applicable to Power distribution the case where, the electrical power distribution apparatus be arranged in power-supply device.

Specifically, as shown in Figure 1, electrical power distribution apparatus provided in this embodiment mainly includes following module: control module 110 include the first distribution module 121, the second distribution module 122 at least one distribution group module 120, each distribution group module With bidirectional thyristor VT；Wherein, the control module 110 is separately connected the first end of first distribution module 121 and described The first end of second distribution module 122, the first end of the bidirectional thyristor VT connect the second of first distribution module 121 End, the second end of the bidirectional thyristor VT connect the second end of second distribution module 122.

In the present embodiment, control module 110 and the combination of distribution group module 120 are on one piece of circuit board, while controlling mould Block 110 can pass through the communication module phase of controller local area network (Controller Area Network, CAN) bus and upper end Even, it realizes convenient to each distribution module and accurately controls.It is described double when first distribution module 121 breaks down To turn on thyristors VT, so that the second end of the first distribution mould 121 exports the output letter of second distribution module 122 Number；When second distribution module 122 breaks down, VT is connected in the bidirectional thyristor, so that second distribution module 122 second end exports the output signal of first distribution module 121.

As it can be seen that the first distribution module 121 and the second distribution module 122 in the present embodiment are led by a bidirectional thyristor Logical VT is connected, when a distribution module breaks down wherein, bidirectional thyristor VT conducting, so that the distribution module to break down It can continue normal output signal, improve the reliability of electrical power distribution apparatus.

Specifically, VT, the second distribution module is connected in triggering bidirectional thyristor when the first distribution module 121 breaks down 122 second end is connected with the second end of the first distribution module 121, so that the output of the second end of the second distribution module 122 is believed Number VT can be connected by the bidirectional thyristor of conducting flow to the second end of the first distribution module 121, and then make the first distribution mould The second end of block 121 exports the output signal of the second end of the second distribution module 122.When the second distribution module 122 breaks down When, VT is connected in triggering bidirectional thyristor, and the second end of the first distribution module 121 is connected with the second end of the second distribution module 122, Allow the output signal of the second end of the first distribution module 121 that VT is connected by the bidirectional thyristor of conducting and flows to second point Second end with module 122, and then make the second end of second end the first distribution module 121 of output of the second distribution module 121 Output signal.It can be seen that the first distribution module of VT connection 121 and the second distribution is connected by bidirectional thyristor in the present embodiment Module 122, so as to continue normal output by another distribution module when the failure of any one distribution module wherein Signal avoids the occurrence of influence of the distribution module to electrical power distribution apparatus of failure, and the reliability of electrical power distribution apparatus is improved one Times.

It should be noted that only the first distribution module 121 and the second distribution module 122 are illustrated in the present embodiment, And it is non-limiting.Suitable first distribution module 121 and second point can be designed according to the practical application scene of electrical power distribution apparatus With module 122.

Further, the type selecting of the internal topology and device of the first distribution module 121 and the second distribution module 122 Substantially it is consistent, to guarantee the output signal of the second end of the first distribution module 121 and the second end of the second distribution module 122 Output signal it is identical.When distribution module breaks down wherein, the output signal of the distribution module of failure and not Output signal before failure is consistent, and then improves the stability of electrical power distribution apparatus.

In the present embodiment, the information bidirectional transmission between control module 110 and distribution group module 120: control module 110 Generate driving signal and be transferred to distribution group module 120, distribution group module 120 operating status for example: input voltage, electric current, Output voltage, electric current etc. are transferred to control chip by sampling unit and carry out operation.

The electrical power distribution apparatus provided in the present embodiment, comprising: control module and at least one distribution module group, Mei Gefen It include the first distribution module, the second distribution module and bidirectional thyristor with module group；Control module is separately connected the first distribution mould The first end of the first end of block and the second distribution module, the first end of bidirectional thyristor connect the second end of the first distribution module, The second end of bidirectional thyristor connects the second end of the second distribution module.When the first distribution module breaks down, two-way crystalline substance lock Pipe conducting, so that the second end of the first distribution module exports the output signal of the second distribution module；When the second distribution module occurs When failure, bidirectional thyristor conducting, so that the second end of the second distribution module exports the output signal of the first distribution module.It can See, technical solution provided in this embodiment, when a distribution module breaks down wherein, bidirectional thyristor conducting makes to occur The module of failure can continue normal output signal, to solve wherein dividing all the way in multi-channel DC output in the prior art The problem of can not restoring in time when breaking down with module, improve the safety and reliability of electrical power distribution apparatus.

On the basis of the above embodiments, the electrical power distribution apparatus is advanced optimized, Fig. 2 is the utility model embodiment One of electrical power distribution apparatus functional block diagram.

Specifically, as shown in Fig. 2, the electrical power distribution apparatus further include: DC power supplier 130 and out-put supply interface Module 140.It should be noted that electrical power distribution apparatus includes two distribution group modules, respectively the first distribution group module in Fig. 2 120 and the second distribution group module 150.First distribution group module 120 includes the first distribution module 121 and the second distribution module 122, Second distribution group module 150 includes the first distribution module 151 and the second distribution module 152.Not to distribution group mould in the present embodiment The quantity of block is defined, the number for the distribution group module that can be suitble to according to the actual conditions design alternative of electrical power distribution apparatus Amount.

Further, when the electrical power distribution apparatus only includes a distribution group module, DC power supplier 130 it is defeated Outlet is separately connected the input terminal of first distribution module 121 and the input terminal of second distribution module 122, the output The input terminal of power supply interface module 140 be separately connected first distribution module 121 output end and second distribution module 122 output end.

When the electrical power distribution apparatus includes multiple distribution group modules, the output end of DC power supplier 130 connects respectively Connect the input terminal of the first distribution module in each distribution group module and the input terminal of the second distribution module 122, the output electricity The input terminal of source interface module 140 is separately connected output end and the second distribution of the first distribution module in each distribution group module The output end of module.

Further, DC power supplier 130 can be rectification circuit, D.C. regulated power supply, dry cell, battery, straight One of generator etc. is flowed, the form and type of DC power supplier 130 are not defined in the present embodiment.

Further, out-put supply interface module 140 is used for the connection established between distribution group module and electrical equipment.This The model of out-put supply interface module 140 is not defined in embodiment, can select suitably to export according to the actual situation The quantity of interface in the model and out-put supply interface module 140 of power supply interface module 140.

On the basis of the above embodiments, the control module 110 is advanced optimized.Fig. 3 is the optional reality of the utility model Apply the functional block diagram of the electrical power distribution apparatus of one of example.

Specifically, as shown in figure 3, the control module 110 includes: that control chip 111, sampling unit 112 and driving are single Member 113；The first end of the control chip 111 connects the first end of the sampling unit 112, and the of the control chip 111 Two ends connect the first end of the driving unit 113；The second end of the driving unit 112 is separately connected the first distribution mould The third end of the first end of the first end of block and second distribution module, the driving unit 113 connects the sampling unit First end.

Further, the control module 110 further include: power conversion unit 114 and output display unit 115；Wherein, The first end of the power conversion unit 114 connects the output end of the DC power supplier, the power conversion unit 114 Second end connects the third end of the control chip 111, and it is single that the 4th end of the control chip 111 connects the output display Member.The second end of the second end connection of power conversion unit 114 sampling unit 112.The third of power conversion unit 114 End connects the 4th end of the driving unit 113.

In the present embodiment, the sampling unit 112 also with first distribution module 121 and the second distribution module 122 It connects (being not shown in Fig. 3), the sample circuit is used to acquire the operation of the first distribution module 121 and the second distribution module 122 State, such as: input voltage, electric current, output voltage, electric current etc., and the operating status is transmitted to control chip 111 and is driven Moving cell 113.So that control chip 111 and driving unit 113 can realize hardware protection and software under output short-circuit situation Control combines, and realizes the protection of quick and highly reliable rate.

The control chip 111 generates control signal according to the sampled signal that the sampling unit 112 acquires, and will be described Control signal is exported to the driving unit 113, described extremely according to control signal driving to trigger the driving unit 113 The first distribution module 121 and the work of the second distribution module 122 in a few distribution group module.Further, sampled signal packet Input voltage sampled signal, output voltage sampled signal and current sampling signal are included, and corresponding sampled signal is input to control Operation is carried out in coremaking piece 111 generates control signal.

It should be noted that the circuit topological structure of sampling unit 112 is not defined in the present embodiment, it can basis The suitable sampling unit of the different designs of actual conditions and sampled signal.In the present embodiment not to control chip 111 form and Type is defined, can be according to different circuit topologies and the suitable control chip 111 of design requirement selection.

Further, the power conversion unit 114 is used to convert the output voltage values of the DC power supplier 150 For the voltage value for corresponding with control chip 111, sampling unit 112 and driving unit 113, the control chip 111 is given, has adopted Sample unit 112 and driving unit 113 provide power supply, make to control chip 111, sampling unit 112 and driving unit 113 normally Work.

It should be noted that being not especially limited in the present embodiment to the circuit topological structure of power conversion unit 114.? In actual treatment, suitable power conversion unit 114 can be designed according to the actual situation.

Further, the output display unit 115 shows the fortune of electrical power distribution apparatus according to signal in control chip 111 Row state.The circuit topological structure of output display unit 115 is not especially limited in the present embodiment.It, can in actual treatment To design suitable output display unit 115 according to the actual situation.

On the basis of the above embodiments, distribution group module has been advanced optimized.Fig. 4 is in the utility model embodiment A kind of structural schematic diagram of distribution group module.

Specifically, as shown in figure 4, first distribution module 121 includes: the first translation circuit 1211 and first diode D1, second distribution module 122 include: the second translation circuit 1221 and the second diode D2；Wherein, the first transformation electricity The input terminal of the input terminal on road 1211 and second translation circuit 1221 is separately connected the output end of the DC power supplier； The first end of the bidirectional thyristor T connects the output end of first translation circuit 1211, and the second of the bidirectional thyristor T End connects the output end of second translation circuit 1221；The anode of the first diode D1 connects first translation circuit 1211 output end, the cathode of first diode D1 connect the input terminal of the out-put supply interface module 140；Described 2nd 2 The anode of pole pipe D2 connects the output end of second translation circuit 1221, and the cathode of the second diode D2 connects the output electricity The input terminal of source interface module 140.

It should be noted that middle DC power supplier 130 is preferably DC power supply Vdc in this implementation.

In the present embodiment, the first translation circuit 1211 and the second translation circuit 1221 use buck BUCK converter, BUCK converter is the non-isolated DC converter that a kind of output voltage is equal to or less than input voltage.Made using BUCK converter For the main circuit structure of each distribution module, it is ensured that be not in overvoltage condition, distribution module can overheated and overloaded In the state of open soft start state, limit power output, achieve the purpose that current limliting, realize overload protection or overheating protection, and Overload that software controlling strategies enable to each distribution module that may occur for a long time, overheat condition are protected and are unlikely to Damage each distribution module.

It should be noted that Fig. 4 is only a kind of structural schematic diagram of distribution group module, power interface mould is not shown in the figure Block, but directly connected in the output end connection load RL1 of the first distribution module 121 in the output end of the second distribution module 122 Load RL2.In practical applications, the output end of the first distribution module 121 and the output end of the second distribution module 122 needs pass through Power supply interface module connection load.

Further, in the present embodiment, the first translation circuit 1211 loads RL1 by first diode D1 connection, the Two translation circuits 1221 load RL1, first diode D1 and the second diode D2 by the second diode D2 connection and are mainly used for It prevents the electric current of load from reversely flowing into the first translation circuit 1211 or the second translation circuit 1221, electrical power distribution apparatus is provided Safety.

Further, a kind of topological structure of translation circuit is provided in the present embodiment, Fig. 5 is the optional implementation of the utility model A kind of structural schematic diagram for translation circuit that example provides.

Specifically, as shown in figure 5, the translation circuit provided in the present embodiment be BUCK translation circuit, specifically include that The first transistor Q1, third diode D3, the first inductance L1 and first capacitor C1；Wherein, the first of the first transistor Q1 End connects the anode of the DC power supplier, and the second end of the first transistor Q1 is separately connected the third diode D3 Cathode and the first inductance L1 first end；The cathode of the third diode D3 is separately connected the DC power supplier Cathode and the first capacitor C1 first end；The second end of the first inductance L1 is separately connected the first capacitor C1's Second end and the bidirectional thyristor.

In the present embodiment, the first transistor Q1 can be triode, field-effect tube, insulated gate bipolar transistor etc., The type of transistor Q1 is not defined in the present embodiment.The first transistor Q1 is preferably metal oxide semiconductor field-effect Crystal (Metal Oxide Semiconductor, MOS) pipe.First capacitor C1 preferably point solution capacitor.

In the present embodiment, the relationship between the input and output voltage of BUCK translation circuit are as follows: Vo=D × Vin, wherein Vo is the output voltage of BUCK translation circuit, and D is the duty ratio for controlling signal, and Vin is the input voltage of BUCK translation circuit.

The present embodiment simply introduces the working principle of BUCK translation circuit by taking one of BUCK translation circuit as an example.

BUCK translation circuit works in normal operating conditions, and when DC power supplier normally exports, metal-oxide-semiconductor is accounted for 100% Sky is than reaching normally open, and the voltage of DC power supplier output after the first inductance L1 and first diode D1 by exporting. The first inductance L1 and first capacitor C1 forms LC filter circuit, the waveform of optimization output electric current, the three or two pole under normally open Pipe D3 reversely ends, first diode D1 forward conduction, distribution module output rated voltage, the i.e. output voltage values of distribution module Equal to the input voltage of distribution module.

BUCK translation circuit works in starting state.Common soft starting mode is the duty ratio starting with 50%, or It is the method starting stepped up with 0-100% duty ratio.In the utility model case, distribution module uses two on startup MOSFET runs a period of time, voltage stabilization to be output with 50% duty ratio when segmentation soft starting mode, i.e. first segment soft start In the half of input voltage, open second segment soft start, when second segment soft start MOSFET using 50% duty ratio as starting point, by Duty ratio is gradually promoted, is normally exported when duty ratio reaches 100%.Preferably, the present embodiment first segment soft-start time is 300u, second segment soft-start time are 500u, and soft start working frequency is 50kHz.

Fig. 6 a is the waveform diagram of 50% duty ratio Starting mode output voltage in the utility model embodiment, and Fig. 6 b is this The waveform diagram of two-part soft starting mode output voltage in utility model embodiment is opened using two-part is soft as shown in Figure 6 b Flowing mode, output voltage are not in very big overshoot, and overshoot is small, can be to stabilize the output voltage in the shorter time.

Fig. 7 a is the waveform diagram of the 50% duty ratio Starting mode output electric current in the utility model embodiment, and Fig. 7 b is this The waveform diagram of two-part soft starting mode output electric current in utility model embodiment exports the spike of electric current as shown in Figure 7b Can substantially it reduce, the damage of switch tube can be preferably minimized.In addition, digital compensator is added in BUCK translation circuit, use There are the duopoles of LC filter in the control counteracting output function of double zero compensation power stages, preferably move so that output has State property energy.

Section of opening and close when BUCK translation circuit soft start is divided into two operation modes, and Fig. 8 is that the utility model is implemented This course of work schematic diagram of BUCK translation circuit when opening mode of example, as shown in figure 8, when metal-oxide-semiconductor Q1 is opened, input electricity Pressure is added on the first inductance L1 and first capacitor C1 by metal-oxide-semiconductor Q1, and the voltage of third diode D3 cut-off, first capacitor C1 is protected Constant, inductive current linear rise is held, energy storage stage is in.

The course of work schematic diagram of BUCK translation circuit when Fig. 9 is the shutdown mode in the utility model embodiment；Such as Fig. 9 Shown, when metal-oxide-semiconductor Q1 closes section, the electric current on the first inductance L1 declines, and the conducting of third diode D3 positively biased carries out afterflow, the first electricity Sense L1, which is in, releases the energy stage.

Further, on the basis of the above embodiments, the present embodiment has advanced optimized sampling unit, comprising: first Sensor and second sensor；

Wherein, the first end of the first sensor connects the output end of the DC power supplier, first sensing The second end of device connects the input terminal of first translation circuit；The first end of the second sensor connects the DC power supply The output end of module, the second end of the second sensor connect the input terminal of first translation circuit.

Preferably, the first sensor and second sensor are Hall sensor.The output valve of Hall sensor passes through Corresponding voltage value is exported after over-sampling resistance, i.e., equivalent current sampling data samples input terminal electric current to realize to electric current It is limited by week, there is output current protecting function well.Current sampling data is transported to inside the MCU of control circuit all the way and carries out Calculation process is conveyed to the driving protection location of hardware protection circuit all the way.

Current sampling data calculation formula: V_isen=I_in·K·R_s, wherein Iin is input current actual size value, and K is suddenly The current sample proportionality coefficient of your sensor, Rs is current sampling resistor.

Further, in the present embodiment, overheating detection uses a negative tempperature coefficient thermistor (Negative Temperature Coefficient, NTC) thermistor is fixed on the cooling fin of MOSFET, when temperature is raised, temperature-sensitive Resistance reduces.

The sampling unit acquires the temperature value of the first transistor, when the temperature value is greater than preset temperature value, The connection of driving unit cutting and the control chip so that control chip stopping by the control signal export to The driving unit.

On the basis of the above embodiments, driving unit 113 has been advanced optimized, Figure 10 is in the utility model embodiment Driving circuit structural schematic diagram, as shown in Figure 10, the driving unit 113 include: optocoupler subelement 1131 and enhancing drive Mover module 1132；

Wherein, the first end of the optocoupler subelement 1131 is connect with the second end of the control chip, optocoupler The second end of unit 1131 connects the first end of the enhancing driving subelement 1132, and the of the enhancing driving subelement 1132 Two ends are separately connected the first end of first allocation unit and the first end of second allocation unit.Further, described Driving unit 113 further include: driving protection subelement 1133；Wherein, the first end connection of the driving protection subelement 1133 The second end of the first end of the sampling unit, the driving protection subelement 1133 connects the of the optocoupler subelement 1131 One end.

In the present embodiment, hardware protection circuit can do overcurrent, short circuit and overheating protection, hardware package in this case study on implementation Protection circuit only does short-circuit protection and overheating protection.

1131 input terminal of optocoupler subelement is divided into the control signal of Digital Circuit Control chip output, by optocoupler subelement 1131 can solve the problem of driving power is amplified, while the metal-oxide-semiconductor Q1 that can solve BUCK translation circuit needs asking for isolation drive Topic.Enhancing driving subelement 1132 and driving protection subelement 1133 can enhance driving capability, and be capable of providing negative pressure pass It is disconnected, so that this driving circuit can also be used to driving power switching tube Insulated Gate Bipolar transistor (Insulated Gate Bipolar Transistor, IGBT), resistance R5 and diac Z1 can play gate drive voltage over-voltage guarantor Shield.Power supply VCC use+12V voltage, power supply VEE use -12V voltage, GND connect the source electrode of the metal-oxide-semiconductor of BUCK translation circuit.

Further, in enhancing driving subelement 1132, voltage stabilizing chip U5 is TL431 voltage stabilizing chip, in voltage stabilizing chip U5 Voltage reference value with resistance R12 tie point is 2.5V, and voltage reference value is input to the 3 of first comparator U4A by resistance R11 Foot.When the Visen value for being transferred to the 2nd foot of U4A is greater than voltage reference value 2.5V, first comparator U4A overturning exports low electricity Flat, optical coupling isolator U3 is connected at this time, and capacitor C8 electric discharge, the 2 foot voltage of Trigger Angle of monostable flipflop U2 is lower than internal touching When power generation pressure, 3 feet of monostable flipflop U2 export high level, are connected by resistance R6 driving triode Q3, thus will input Driving signal drag down, corresponding branch is forbidden exporting, realize short-circuit protection.Wherein, the Visen value is that sample rate current is equivalent Value.

Further, short-circuit protection a reference value is set in the implementation case as 3 times of output-current rating.Short-circuit protection base Enter short-circuit protection when quasi- value 2.5V, i.e. Visen > 2.5V, is short circuit current protection value according to 3 times of rated current, while suddenly The current sample Proportional coefficient K of your sensor is it is known that according to Formula V_isen=I_in·K·R_sThe size of sampling resistor can be found out.

When metal-oxide-semiconductor Q1 overheat, the NTC thermistor resistance value being mounted on metal-oxide-semiconductor Q1 radiator is reduced, by NTC temperature-sensitive Resistance and R14 constitute divider resistance, and the temperature equivalent voltage of two resistance connecting places will rise.Voltage stabilizing chip U5 and R12 tie point Voltage reference value be 2.5V, voltage reference value is input to 6 feet of the second comparator U4B by R13.R14 resistance value is adjusted, makes to work as The temperature equivalent voltage value of divider resistance connecting place is equal to 2.5V when temperature reaches protection temperature.When temperature continues to rise, temperature When equivalent voltage is more than the voltage reference value 2.5 of reverse input end (foot 6) of the second comparator U4B, the second comparator U4B output Low level, optical coupling isolator U3 conducting, capacitor C8 electric discharge, the 2 foot voltage of Trigger Angle of monostable flipflop U2 is lower than internal touching When power generation pressure, 3 feet of monostable flipflop U2 export high level, are connected by resistance R6 driving triode Q3, thus will input Driving signal drag down, realize overheat protector.

After protecting the protection signal relief of circuit, the output end (foot 3) of monostable flipflop U2 will not be reduced to low immediately Level, but still delay a period of time output high level, export the overall time of high level by resistance R7 and capacitor C7 when Between constant determine.Physical relationship is: Tw=1.11*R7*C2.The purpose of delay output high level is to avoid sequential short circuit or overheat Operation causes MOSFET to damage, while having the regular hour to allow control chip by sampling resistor sampling and outputting voltage, judges electricity Road working condition, and then implement corresponding control measure.Specifically, delay time is 200us or so in the present embodiment.

Further, when control chip by sampling unit to sample output voltage be zero when, can be judged as and trigger At this moment hardware protection circuit controls chip and stops output drive signal, into discontinuous operation state, after certain interval of time again Soft start is opened, interval time is conveniently to be transitioned into the state worked normally next time.The detection output electricity after soft start Pressure and output electric current, if all be rated value if work normally, if voltage value is zero or current value overrate, again into Enter discontinuous operation state.If triggering discontinuous operation state more than three times, can determine distribution module occur cannot and The failure of Shi Xiufu can control chip at this time and forbid work, while this information can be transmitted to monitoring mould by CAN bus Block sounds an alarm, and display module issues red colored lamp.To be again started up, then it can allow by the switch outside control and monitor mould Reset signal is issued by CAN bus fastly, so that whole system is started to work from new.

Since shocking damage of the overcurrent to circuit wants small compared to short circuit, so only using software section to carry out overcurrent guarantor Shield.When overcurrent condition occurs in distribution module, also enters intermittent mode accordingly, be again turned on soft open after certain interval of time It is dynamic, it is transitioned into normal operating conditions next time.After soft start, output voltage and output electric current can detecte；If detection Output voltage and output electric current are all rated value, then can work normally；If voltage value is zero or current value overrate, Then it is again introduced into discontinuous operation state.If triggering discontinuous operation state more than three times, it can determine that distribution module goes out The failure that cannot now repair in time, MCU can forbid work, while this information can be transmitted to monitoring mould by CAN bus Block sounds an alarm, and display module issues red colored lamp.To be again started up monitoring module can only be allowed by the switch outside control Reset signal is issued by CAN bus, whole system is made to start to work from new.

Further, Figure 11 is the schematic diagram of the distribution switch in the utility model embodiment.When its of distribution group module In a distribution module sound an alarm and break down when cannot repair in time, distribute switch by manual control to select work Operation mode will assign concern that is, by the way of artificial and change to branch position, and the distribution module to break down is made to enter closing mould The connection of block and cutting and DC power supplier, while forbidding corresponding control chip operation.Another way distribution module is as branch Road is helped, provides the output of two-way distribution module into backup job mode.The overcurrent protection value for supporting road in the case becomes The rated current summation of associated branch, and bidirectional thyristor is connected.External switch is supervised by transmitting a signal to monitoring module Control module monitors control chip operation by CAN communication again.In addition, assigning concern changes to stop position, entire power supply point It stops working with device.When assigning concern and changing to normal position, electrical power distribution apparatus is worked normally.

The utility model embodiment additionally provides a kind of equipment, and the equipment includes as any in what is provided in above-described embodiment The electrical power distribution apparatus.

Electrical power distribution apparatus provided by the utility model any embodiment can be performed in above-mentioned electronic equipment, has and executes electricity The corresponding functional module of source distributor and beneficial effect.

Note that above are only the preferred embodiment and institute's application technology principle of the utility model.Those skilled in the art's meeting Understand, the utility model is not limited to specific embodiment described here, is able to carry out for a person skilled in the art various bright Aobvious variation, readjustment and substitution is without departing from the protection scope of the utility model.Therefore, although passing through above embodiments The utility model is described in further detail, but the utility model is not limited only to above embodiments, is not departing from It can also include more other equivalent embodiments in the case that the utility model is conceived, and the scope of the utility model is by appended Scope of the claims determine.

Claims (10)

1. a kind of electrical power distribution apparatus characterized by comprising control module and at least one distribution group module, each distribution Group module includes the first distribution module, the second distribution module and bidirectional thyristor；

Wherein, the control module be separately connected first distribution module first end and second distribution module first End, the first end of the bidirectional thyristor connect the second end of first distribution module, the second end of the bidirectional thyristor Connect the second end of second distribution module；

When first distribution module breaks down, bidirectional thyristor conducting, so that the of first distribution module Two ends export the output signal of the second end of second distribution module；

When second distribution module breaks down, bidirectional thyristor conducting, so that the of second distribution module Two ends export the output signal of the second end of first distribution module.

2. the apparatus according to claim 1, which is characterized in that described device further include: DC power supplier and output electricity Source interface module；

Wherein, the output end of DC power supplier is separately connected the input terminal and the second distribution mould of first distribution module The input terminal of block, the input terminal of the out-put supply interface module are separately connected the output end of first distribution module and described The output end of second distribution module.

3. the apparatus of claim 2, which is characterized in that the control module include: control chip, sampling unit and Driving unit；

The first end of the control chip connects the first end of the sampling unit, described in the second end connection of the control chip The first end of driving unit；

The second end of the driving unit is separately connected the first end and second distribution module of first distribution module First end, the third end of the driving unit connect the first end of the sampling unit；

Wherein, the sampled signal that the control chip acquire according to the sampling unit, which generates, controls signal, and by the control Signal is exported to the driving unit, to trigger the driving unit according at least one described distribution of control signal driving The first distribution module and the work of the second distribution module in group module.

4. device according to claim 3, which is characterized in that the control module further include: power conversion unit and defeated Display unit out；

Wherein, the first end of the power conversion unit connects the output end of the DC power supplier, and the power supply conversion is single The second end of member connects the third end of the control chip, and the 4th end of the control chip connects the output display unit.

5. device according to claim 3, which is characterized in that first distribution module include: the first translation circuit and First diode, second distribution module include: the second translation circuit and the second diode；

Wherein, the input terminal of the input terminal of first translation circuit and second translation circuit is separately connected the direct current The output end of source module；

The first end of the bidirectional thyristor connects the output end of first translation circuit, the second end of the bidirectional thyristor Connect the output end of second translation circuit；

The anode of the first diode connects the output end of first translation circuit, described in the cathode connection of first diode The input terminal of out-put supply interface module；

The anode of second diode connects the output end of second translation circuit, described in the cathode connection of the second diode The input terminal of out-put supply interface module.

6. device according to claim 5, which is characterized in that the sampling unit includes: that first sensor and second pass Sensor；

Wherein, the first end of the first sensor connects the output end of the DC power supplier, the first sensor Second end connects the input terminal of first translation circuit；

The first end of the second sensor connects the output end of the DC power supplier, the second end of the second sensor Connect the input terminal of first translation circuit.

7. device according to claim 5, which is characterized in that the translation circuit includes: the first transistor, the three or two pole Pipe, the first inductance and first capacitor；

Wherein, the first end of the first transistor connects the anode of the DC power supplier, and the of the first transistor Two ends are separately connected the cathode of the third diode and the first end of first inductance；

The cathode of the third diode is separately connected the cathode of the DC power supplier and the first end of the first capacitor； The second end of first inductance be separately connected the first capacitor second end and the bidirectional thyristor；

The sampling unit acquires the temperature value of the first transistor, described when the temperature value is greater than preset temperature value The connection of driving unit cutting and the control chip, so that control chip stopping exports the control signal to described Driving unit.

8. device according to claim 3, which is characterized in that the driving unit includes: optocoupler subelement and enhancing Driven submodule；

Wherein, the first end of the optocoupler subelement is connect with the second end of the control chip, and the of the optocoupler subelement Two ends connect the first end of the enhancing driving subelement, and the second end of the enhancing driving subelement is separately connected described first The first end of the first end of allocation unit and second allocation unit.

9. device according to claim 8, which is characterized in that the driving unit further include: driving protection subelement； Wherein,

The first end of the driving protection subelement connects the first end of the sampling unit, and the of the driving protection subelement Two ends connect the first end of the optocoupler subelement.

10. a kind of equipment, which is characterized in that the equipment includes the power distribution dress as described in any in claim 1 to 9 It sets.