CN206922441U - A kind of high-tension distribution box for electric vehicle - Google Patents

A kind of high-tension distribution box for electric vehicle Download PDF

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Publication number
CN206922441U
CN206922441U CN201720310240.0U CN201720310240U CN206922441U CN 206922441 U CN206922441 U CN 206922441U CN 201720310240 U CN201720310240 U CN 201720310240U CN 206922441 U CN206922441 U CN 206922441U
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China
Prior art keywords
branch road
relay
charging
electric energy
distribution box
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CN201720310240.0U
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Chinese (zh)
Inventor
张毅
申大鹏
吴红
梁慧升
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Jasmin International Auto Research and Development Beijing Co Ltd
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Jasmin International Auto Research and Development Beijing Co Ltd
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Abstract

A kind of high-tension distribution box for electric vehicle is the utility model is related to, including:Basic circuit and multiple electric energy transmission branches;Basic circuit is connected with one end of each electric energy transmission branch;The electric energy that electrokinetic cell conveys is assigned to each electric energy transmission branch by basic circuit;The electric energy that basic circuit distributes is exported the electrical equipment connected to the electric energy transmission branch other end and charging equipment by electric energy transmission branch;Electric energy transmission branch includes main distribution branch road, charging paths and electricity consumption annex branch road;Basic circuit includes the positive relay of master in parallel and the positive relay that charges;Master in parallel bears relay and the negative relay of charging;The main positive relay of main distribution branch road connection and main negative relay;The positive relay of charging paths connection charging and the negative relay of charging.Technical scheme provided by the utility model, it is not in high-voltage safety hidden danger that can ensure direct-current charge port, solves prior art charging and discharging loop and shares main negative relay, the direct-current charge port negative pole Issues on Static Electrification in discharge process.

Description

A kind of high-tension distribution box for electric vehicle
Technical field
It the utility model is related to electric vehicle engineering field, more particularly to a kind of high-tension distribution box for electric vehicle.
Background technology
To solve increasingly serious environment and energy crisis, the development and popularization of new-energy automobile are imperative.But It is that the high-voltage safety accident to take place frequently has beaten alarm bell for the safe design of new-energy automobile.
At present, most of high-tension distribution box case material is generally metal plate or cast aluminium, and internal components are arranged using a laminar, Each device is connected by copper bar or stack bus bar and wire harness, wherein internal components are mainly by high-voltage relay, fusing Device, conductive bar, high-low pressure wire harness, preliminary filling resistance, current sensor, high-low pressure connector composition.
Wherein, discharge loop device mainly includes:Main positive relay, main negative relay, preliminary filling relay, fuse and pre- Charging resistance, by battery management system or the positive relay of vehicle control unit controls master, lead closing for negative relay and preliminary filling relay Close with disconnecting to complete vehicle power-on and power-off;Charge circuit mainly includes:Charge positive relay, main negative relay, fuse;Filling When establishing the beginning by cable, the main negative relay of battery management system control, the positive relay of charging are closed, and loop conducting, charging is carried out, fuse Can ensure loop will not by security implications such as excessively stream and short circuits, at the end of charging, then by battery management system control it is main it is negative, The positive relay that charges disconnects, so as to complete to charge;
But current high-tension distribution box overall dimensions are larger, and internal components arrange more loose, whole inner space utilization rate Relatively low, internal high-low pressure harness excess-length, vehicle high tension loop integrated level is relatively low, is unfavorable for the high-voltage safety control of vehicle.In addition Charging and discharging circuit shares main negative relay, and in discharge process, direct-current charge port negative pole is powered, potential safety hazard be present.Further , PDU (power distribution unit) can not accomplish maintenance and the in particular cases timely disconnection of power supply, increase without service switch The security risk of vehicle and personnel.
Utility model content
Technical problem to be solved in the utility model is to provide one kind can be powered to solve direct-current charge port negative pole The high-tension distribution box for electric vehicle of problem.
For this purpose, the utility model proposes a kind of high-tension distribution box for electric vehicle, including:
Basic circuit and multiple electric energy transmission branches;The basic circuit is connected with one end of each electric energy transmission branch;
Basic circuit, the electric energy for electrokinetic cell to be conveyed are assigned to each electric energy transmission branch;
Electric energy transmission branch, the electric energy for the basic circuit to be distributed, which is exported to the electric energy transmission branch other end, to be connected The electrical equipment and charging equipment connect;
The electric energy transmission branch includes main distribution branch road, charging paths and electricity consumption annex branch road;
The basic circuit includes the positive relay of master in parallel and the positive relay that charges;Master in parallel bears relay and charging Negative relay;
The main positive relay of main distribution branch road connection and main negative relay;
The negative relay of the positive relay of the charging paths connection charging and charging.
Preferably, the basic circuit also includes the precharging circuit in parallel with the positive relay of the master;
The precharging circuit includes the preliminary filling relay and preliminary filling resistance of series connection.
Preferably, the main distribution branch road includes:Electric machine controller interface branch road, preceding PTC thermistor interface branch road, in PTC interfaces branch road, rear PTC interfaces branch road and power steering interface branch road.
Preferably, the preceding PTC interfaces branch road, middle PTC interfaces branch road and rear PTC interfaces branch road include the first of series connection Relay and first fuse.
Preferably, the electricity consumption annex branch road includes DC-DC converter interface branch road, PTC heating interface branch roads and air-conditioning pressure Contracting machine interface branch road.
Preferably, the DC-DC converter interface branch road, PTC heating interface branch roads and compressor of air conditioner interface branch road wrap Include the second relay and second fuse of series connection.
Preferably, the charging paths include DC charging branch road and AC charging machine branch road;The DC charging branch road Including the 3rd fuse.
Preferably, the basic circuit also includes the service switch of series connection;One end connection of the service switch is described dynamic The positive pole of power battery, the other end pass through the Hall sensor, and connect respectively the electricity consumption annex branch road, main positive relay and Charge positive relay.
Preferably, the basic circuit also includes:Connect the positive pole of the electrokinetic cell and the insulation monitoring module of negative pole; The insulation monitoring module connects the data output end of the Hall sensor;The insulation monitoring module passes through low pressure connector Communicated with battery management system, the battery management system connects the coil of each relay by the low pressure connector End, control disconnection and the closure of each relay.
Preferably, the distribution box is bilayer, and the second layer is to be integrated with the basic circuit and multiple electric energy transmission branches Pcb board, first layer be bi-layer stack mother row connector part basic circuit;The bi-layer stack mother row connector part connects institute State pcb board;All low-voltage signal lines of the distribution box are connected by the pcb board with the low pressure connector, the low pressure Connector is connected with the signal wire of outside.
The high-tension distribution box for electric vehicle that the utility model embodiment provides, high-tension distribution box integrated level is of a relatively high, just In the control and replacing of high tension apparatus safety, discharge loop individually separates with charge circuit, discharge loop by lead positive relay and Main negative Control break-make, charge circuit is then by the negative Control break-make of positive relay and charging that charges, so as to protect Therefore barrier direct-current charge port problem will not cause high-voltage safety hidden danger and insulation fault, solve prior art charging and discharging and return Road shares main negative relay, and direct-current charge port negative pole is powered in discharge process, the problem of potential safety hazard be present.
Brief description of the drawings
Feature and advantage of the present utility model can be more clearly understood by reference to accompanying drawing, accompanying drawing be schematically without It is interpreted as carrying out any restrictions to the utility model, in the accompanying drawings:
Fig. 1 is the principle schematic for the high-tension distribution box for electric vehicle that the utility model embodiment provides;
Fig. 2 is the principle schematic for the high-tension distribution box for electric vehicle that another embodiment of the utility model provides.
Embodiment
Embodiment of the present utility model is described in detail below in conjunction with accompanying drawing.
As shown in figure 1, the utility model embodiment provides a kind of high-tension distribution box for electric vehicle, including:
Basic circuit and multiple electric energy transmission branches;The basic circuit is connected with one end of each electric energy transmission branch;
Basic circuit, the electric energy for electrokinetic cell to be conveyed are assigned to each electric energy transmission branch;
Electric energy transmission branch, the electric energy for the basic circuit to be distributed, which is exported to the electric energy transmission branch other end, to be connected The electrical equipment and charging equipment connect;
The electric energy transmission branch includes main distribution branch road 15, charging paths 16 and electricity consumption annex branch road 17;
The basic circuit includes the positive relay 11 of master in parallel and relay is born in the positive relay 13 that charges, charging in parallel 14 bear relay 12 with main;
The main positive relay 11 of the connection of main distribution branch road 15 and main negative relay 12;
The negative relay 14 of the positive relay 13 of the connection of charging paths 16 charging and charging.
Specifically, electrokinetic cell is without direct supply object, electrokinetic cell connection high-tension distribution box, by high-tension distribution box After high tension loop carries out electric current distribution, then powered to different electrical equipments and charging equipment.Due in the prior art, discharging Loop and charge circuit share main negative relay 12, and in discharge process, direct-current charge port negative pole is powered, potential safety hazard be present, So the utility model embodiment provide high-tension distribution box, discharge loop be above-mentioned main distribution branch road 15 and charge circuit i.e. Above-mentioned charging paths 16 individually separate, and discharge loop controls break-make, charge circuit by leading positive relay 11 with main negative relay 12 Break-make is then controlled by the negative relay 14 of positive relay 13 and charging that charges, wherein, relay is born in charge positive relay 13 and charging 14 can be controlled by battery management system, and thus, direct-current charge port negative pole Issues on Static Electrification is addressed during automotive discharge.Need It is noted that the electricity consumption annex branch road 17 refers to low current duplexure, can be used for connecting the low currents such as compressor of air conditioner Electrical equipment, the electricity consumption annex branch road 17 can not be by the positive relays 11 of master and main negative relay 12, directly and electrokinetic cell Both positive and negative polarity connection.Wherein preferably, in order to be protected to electrical equipment, can connect relay on electricity consumption annex branch road 17 Device and fuse, when loop current is more than its fusing scope, fuse blows, so as to form protection.
The high-tension distribution box for electric vehicle that the utility model embodiment provides, high-tension distribution box integrated level is of a relatively high, just In the control and replacing of high tension apparatus safety, discharge loop individually separates with charge circuit, discharge loop by lead positive relay and Main negative Control break-make, charge circuit is then by the negative Control break-make of positive relay and charging that charges, so as to protect It is not in high-voltage safety hidden danger and insulation fault to hinder direct-current charge port, solves prior art charging and discharging loop and shares master Negative relay, direct-current charge port negative pole is powered in discharge process, the problem of potential safety hazard be present.
As shown in Fig. 2 on the basis of above-described embodiment, the basic circuit also includes relay 11 positive with the master simultaneously The precharging circuit of connection;The precharging circuit includes the preliminary filling relay 18 and preliminary filling resistance 19 of series connection.It should be noted that when pre- After filling the adhesive of relay 18, electric current is pre- so as to proceed by with electric machine controller formation RC oscillating circuits by preliminary filling resistance 19 Fill, after electric machine controller both end voltage reaches required pre-charge pressure, when entire car controller detects that preliminary filling completes signal, to master Positive relay 11 sends closure signal, and after the main positive adhesive of relay 11, electrokinetic cell exports high-tension electricity by main distribution branch road 15 Source, to drive electrical equipment.
Wherein, as shown in Fig. 2 the main distribution branch road 15 includes:Electric machine controller interface branch road, preceding PTC (temperature-sensitive electricity Resistance) interface branch road, middle PTC interfaces branch road, rear PTC interfaces branch road and power steering interface branch road.It is wherein preferable, for independence Ground controls preceding PTC interfaces branch road, middle PTC interfaces branch road and rear PTC interfaces branch road, the preceding PTC interfaces branch road, middle PTC interfaces Branch road and rear PTC interfaces branch road include the first relay 20 and first fuse 21 of series connection.Preceding PTC interfaces branch road, in Increase first fuse 21 on PTC interfaces branch road and rear PTC interfaces branch road to melt when branch current is more than its fusing scope Disconnected device fusing, so as to be protected to the electrical equipment connected on these branch roads.
Further, as shown in Fig. 2 the electricity consumption annex branch road 17 includes DCDC (DC-to-dc) switching device interface branch Road, PTC heating interface branch roads and compressor of air conditioner interface branch road.It should be noted that the electricity consumption annex branch road 17 is low current Branch road, for connecting DC/DC converters, ptc heater part and compressor of air conditioner etc..Wherein, preferably, the DCDC conversions Device interface branch road, PTC heating interface branch roads and compressor of air conditioner interface branch road include the second relay 22 and second of series connection Fuse 23.It should be noted that conducting and the closure of the second relay 22 on branch road are corresponded to, can be with control interface branch road Current switching, and the effect of second fuse 23 is identical with the effect of first fuse 21, when electric current is excessive, plays fusing and protects The effect of shield.
Further, as shown in Fig. 2 the charging paths 16 include DC charging branch road 16 and AC charging machine branch Road;The DC charging branch road 16 includes the 3rd fuse 24.Wherein, the 3rd fuse 24 and above-mentioned second fuse 23rd, the effect all same of first fuse 21, when the electric current of branch road where fuse is excessive, fuse blows, charging is set It is standby to play protection.
As shown in Fig. 2 in order to realize protection under maintenance and special status, the basic circuit also includes the maintenance of series connection Switch 25;One end of the service switch 25 connects the positive pole of the electrokinetic cell, and the other end passes through the Hall sensor 26, And connect the electricity consumption annex branch road 17, main positive relay 11 and the positive relay 13 of charging.It should be noted that in high voltage power distribution When case needs repairing, the service switch 25 of high-tension distribution box can be pulled out in the case of high pressure lower electricity, export electrokinetic cell To high-tension distribution box power supply disconnect, with this come ensure maintenance personal safety, under special circumstances, such as inside high-tension distribution box Generation short circuit, can pull out service switch 25, play a part of protecting distribution box.Wherein, the effect of Hall sensor 26 It is then the situation for detecting electrokinetic cell input current, the break-make with closed control loop is then disconnected by control relay, On the basis of fuse, protection is further formed.
Wherein, the basic circuit also includes:Connect the positive pole of the electrokinetic cell and the insulation monitoring module of negative pole;Institute State the data output end that insulation monitoring module 27 connects the Hall sensor 26;The insulation monitoring module 27 is connect by low pressure Plug-in unit 28 is communicated with battery management system, and the battery management system connects each relay by the low pressure connector 28 The coil-end of device, control disconnection and the closure of each relay.It should be noted that the effect of insulation monitoring module 27 is detection The voltage of electrokinetic cell both ends input, it is different to battery management system transmission voltage by low pressure connector 28 in electric voltage exception Regular signal, then the break-make of each relay is controlled by battery management system by low pressure connector 28.Hall sensor 26 detects To electrokinetic cell input current conditions can also be transmitted by low pressure connector 28 to battery management system, by battery management System controls disconnection and the closure of each relay by low pressure connector 28.So as to it make the high-tension distribution box of the electric automobile Security it is higher.
Specifically, when vehicle enters charged state, then battery management system sends message, controls and is filled in high-tension distribution box Electric positive relay 13 and the negative relay 14 of charging close, and are charged, when charging is broken down, according to battery management system to Charge positive relay 13 and the negative transmission of relay 14 open command of charging, forms first layer protection;If charge the positive He of relay 13 When the negative relay 14 of charging can not disconnect or battery management system breaks down, charge circuit fuse blows then form the second layer Protection.
In discharge process, closed first by the main negative relay 12 of battery management system control, while by full-vehicle control Device control preliminary filling relay 18 closes, and carries out preliminary filling, to protect electrical equipment and main positive relay 11, it is specified that after the time, by The positive relay 11 of vehicle control unit controls master closes, and is then turned off preliminary filling relay 18, and further, every discharge loop has Corresponding fuse is protected, and prevents its excessively stream or short circuit.
Wherein preferably, arranged for internal components, take Dual-layer to arrange inside the distribution box, the second layer is (i.e. Upper strata) to be integrated with the basic circuit and the pcb board of multiple electric energy transmission branches, first layer (i.e. lower floor) is that bi-layer stack is female Arrange the basic circuit of interface unit;The bi-layer stack mother row connector part connects the pcb board;The distribution box it is all low Pressure signal wire is connected by the pcb board with described low pressure connector, and the low pressure connector is connected with the signal wire of outside. It should be noted that lower floor sets bi-layer stack mother row connector part to be advantageous to improve insulating protection, and such a arrangement can improve High-tension distribution box integrated level and security performance, reduce its overall dimensions, make its internal arrangement safe and attractive in appearance, be more convenient for tieing up Repair.
, it is necessary to the orientation or position relationship of the instruction such as explanation, term " on ", " under " in description of the present utility model Based on orientation shown in the drawings or position relationship, to be for only for ease of description the utility model and simplifying description, without referring to Show or imply that the device of meaning or element there must be specific orientation, with specific azimuth configuration and operation, therefore can not manage Solve as to limitation of the present utility model.Unless otherwise clearly defined and limited, term " installation ", " connected ", " connection " should be done It broadly understood, for example, it may be being fixedly connected or being detachably connected, or be integrally connected;Can mechanically connect, It can also be electrical connection;Can be joined directly together, can also be indirectly connected by intermediary, can be two element internals Connection.For the ordinary skill in the art, it can understand above-mentioned term in the utility model as the case may be Concrete meaning.
It should also be noted that, herein, such as first and second or the like relational terms are used merely to one Entity or operation make a distinction with another entity or operation, and not necessarily require or imply between these entities or operation Any this actual relation or order be present.Moreover, term " comprising ", "comprising" or its any other variant are intended to contain Lid nonexcludability includes, so that process, method, article or equipment including a series of elements not only will including those Element, but also the other element including being not expressly set out, or it is this process, method, article or equipment also to include Intrinsic key element.In the absence of more restrictions, the key element limited by sentence "including a ...", it is not excluded that Other identical element also be present in process, method, article or equipment including the key element.
Although being described in conjunction with the accompanying embodiment of the present utility model, those skilled in the art can not depart from Various modifications and variations are made in the case of spirit and scope of the present utility model, such modifications and variations are each fallen within by appended Within claim limited range.

Claims (10)

  1. A kind of 1. high-tension distribution box for electric vehicle, it is characterised in that including:
    Basic circuit and multiple electric energy transmission branches;The basic circuit is connected with one end of each electric energy transmission branch;
    Basic circuit, the electric energy for electrokinetic cell to be conveyed are assigned to each electric energy transmission branch;
    Electric energy transmission branch, the electric energy for the basic circuit to be distributed export what is connected to the electric energy transmission branch other end Electrical equipment and charging equipment;
    The electric energy transmission branch includes main distribution branch road, charging paths and electricity consumption annex branch road;
    The basic circuit includes the positive relay of master in parallel and the positive relay that charges;Master in parallel bear relay and charging it is negative after Electrical equipment;
    The main positive relay of main distribution branch road connection and main negative relay;
    The negative relay of the positive relay of the charging paths connection charging and charging.
  2. 2. a kind of high-tension distribution box for electric vehicle according to claim 1, it is characterised in that the basic circuit also includes The precharging circuit in parallel with the positive relay of the master;
    The precharging circuit includes the preliminary filling relay and preliminary filling resistance of series connection.
  3. A kind of 3. high-tension distribution box for electric vehicle according to claim 1, it is characterised in that the main distribution branch road bag Include:Electric machine controller interface branch road, preceding PTC thermistor interface branch road, middle PTC interfaces branch road, rear PTC interfaces branch road and steering Power-assisted interface branch road.
  4. A kind of 4. high-tension distribution box for electric vehicle according to claim 3, it is characterised in that the preceding PTC interfaces branch road, Middle PTC interfaces branch road and rear PTC interfaces branch road include the first relay and first fuse of series connection.
  5. A kind of 5. high-tension distribution box for electric vehicle according to claim 1, it is characterised in that the electricity consumption annex branch road bag Include DC-DC converter interface branch road, PTC heating interface branch roads and compressor of air conditioner interface branch road.
  6. A kind of 6. high-tension distribution box for electric vehicle according to claim 5, it is characterised in that the DC-DC converter interface Branch road, PTC heating interface branch roads and compressor of air conditioner interface branch road include the second relay and second fuse of series connection.
  7. 7. a kind of high-tension distribution box for electric vehicle according to claim 1, it is characterised in that the charging paths include straight Current charge branch road and AC charging machine branch road;The DC charging branch road includes the 3rd fuse.
  8. 8. a kind of high-tension distribution box for electric vehicle according to claim 1, it is characterised in that the basic circuit also includes The service switch of series connection;One end of the service switch connects the positive pole input of the electrokinetic cell, and the other end passes through Hall Sensor, then connect the electricity consumption annex branch road, main positive relay and the positive relay of charging.
  9. 9. a kind of high-tension distribution box for electric vehicle according to claim 8, it is characterised in that the basic circuit also wraps Include:Connect the positive pole of the electrokinetic cell and the insulation monitoring module of negative pole;The insulation monitoring module connects the Hall and passed The data output end of sensor;The insulation monitoring module is communicated by low pressure connector with battery management system, the electricity Pond management system connects the coil-end of each relay by the low pressure connector, controls the disconnection of each relay with closing Close.
  10. A kind of 10. high-tension distribution box for electric vehicle according to claim 1, it is characterised in that the distribution box is bilayer, The second layer is the pcb board for being integrated with the basic circuit and multiple electric energy transmission branches, and first layer connects for bi-layer stack busbar The basic circuit of device;The bi-layer stack mother row connector part connects the pcb board;All low-voltage signals of the distribution box Line is connected by the pcb board with the low pressure connector, and the low pressure connector is connected with the signal wire of outside.
CN201720310240.0U 2017-03-27 2017-03-27 A kind of high-tension distribution box for electric vehicle Active CN206922441U (en)

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CN201720310240.0U CN206922441U (en) 2017-03-27 2017-03-27 A kind of high-tension distribution box for electric vehicle

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Application Number Priority Date Filing Date Title
CN201720310240.0U CN206922441U (en) 2017-03-27 2017-03-27 A kind of high-tension distribution box for electric vehicle

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109263475A (en) * 2018-09-29 2019-01-25 北京长城华冠汽车科技股份有限公司 Vehicle high-voltage electricity system, powering method and vehicle with it
CN110920391A (en) * 2018-09-18 2020-03-27 比亚迪股份有限公司 Vehicle-mounted high-voltage distribution box and electric automobile
CN111361415A (en) * 2018-12-07 2020-07-03 湖南中车时代电动汽车股份有限公司 Electric automobile energy management method, energy storage management controller and energy management unit
CN112744074A (en) * 2019-10-29 2021-05-04 中车时代电动汽车股份有限公司 Distribution box for double-source trackless trolley bus

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110920391A (en) * 2018-09-18 2020-03-27 比亚迪股份有限公司 Vehicle-mounted high-voltage distribution box and electric automobile
CN109263475A (en) * 2018-09-29 2019-01-25 北京长城华冠汽车科技股份有限公司 Vehicle high-voltage electricity system, powering method and vehicle with it
CN111361415A (en) * 2018-12-07 2020-07-03 湖南中车时代电动汽车股份有限公司 Electric automobile energy management method, energy storage management controller and energy management unit
CN112744074A (en) * 2019-10-29 2021-05-04 中车时代电动汽车股份有限公司 Distribution box for double-source trackless trolley bus

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