Utility model content
In order to overcome defect of the prior art, the purpose of this utility model is that proposing one is applied to new-energy automobile and has
The high voltage distribution box of multiple protective.Described high voltage distribution box can enable signal by low pressure and control energising and the power-off of high pressure, keeps away
Exempt from human body and directly control the break-make of high pressure, it is possible to electric machine controller and annex are carried out preliminary filling, can quick-break soon when electric current is excessive
Open fuse, protect external equipment, it is possible to disconnect high pressure by service switch, enable a person to safe use high pressure, rationally control
The break-make of high pressure processed, through multiple protective, strengthens human body and the safety of equipment.
For solving above-mentioned technical problem, the utility model is achieved through the following technical solutions:
A kind of high voltage distribution box being applied to new-energy automobile and having multiple protective, including high voltage power distribution box body, high voltage supply
Part and low pressure control section；
Described high voltage power distribution box body is made up of high voltage distribution box housing and insulated terminal；
Described high voltage supply part by high-tension connector socket, copper bar, contactor, preliminary filling resistance, fuse, service switch and
High voltage interface forms；
Described low pressure control section is made up of relay, low voltage wiring harness, low voltage wiring harness keyset, low-voltage interface.
Further, described copper bar is connected with the positive pole of battery, and a service switch of connecting on copper bar.To high voltage distribution box
Disconnect high-tension electricity when keeping in repair, prevent from human body is damaged；Work as battery failure, when charging and discharging currents is excessive, maintenance
Switch off, it is to avoid high-voltage board and external equipment are caused damage；High tension loop does not all use wire through copper bar, it is possible to
Bear bigger electric current and voltage.
Further, the discharge loop of described battery is provided with current sensor.Described current sensor is used for detecting discharge and recharge electricity
Flow valuve, it is simple to described high voltage distribution box is controlled and management, carry out multiple safeguard protection.
Further, described low-voltage interface includes annex preliminary filling relay interface, annex relay interface, master control preliminary filling relay
Interface, master relay interface, charge relay interface, AIR COND RLY Air Conditioner Relay interface, defrosting relay interface, steering pump relay
Device interface, air compressor machine relay interface, DC/DC relay interface；
Wherein, described low-voltage interface is for controlling the enable signal of relay, and low-voltage control signal is direct to relay by lead-in wire
It is controlled, external voltage control signal low voltage wiring harness keyset in connector connects into high voltage distribution box, then by low pressure
The low voltage wiring harness drawn on wire harness keyset is respectively connecting to each contactor and relay coil two ends, described relay and its
Corresponding contactor coupling.
When there being enable signal, the meeting adhesive of high voltage distribution box corresponding relay, power on for its contactor coil controlled so that it is
Normally opened contact adhesive, anode is conducted with the positive pole of corresponding high voltage interface, through fuse, thus to external equipment for height
Piezoelectricity, when also receiving feedback signal after accessory contact device or master control contactor adhesive.
Further, described low voltage wiring harness keyset includes fly-wheel diode, it is to avoid the counter electromotive force pair produced when disconnecting contactor
Equipment causes damage.
Described enable signal is Low level effective (if high level the most then enables voltage and selects according to relay coil voltage),
Relay is directly controlled by low-voltage control signal by lead-in wire, and then external voltage control signal connects into height through connector
Keyset in pressure block terminal, then it is respectively connecting to each contactor and relay coil two ends by the wire harness drawn on keyset；
It addition, also with fly-wheel diode on keyset, it is to avoid equipment is caused damage by the counter electromotive force produced when disconnecting contactor.When
When having enable signal, the meeting adhesive of corresponding relay, power on for its contactor coil controlled so that it is normally opened contact adhesive, electricity
Pond positive pole is conducted with the positive pole of corresponding high voltage interface, through fuse, thus to external equipment for high-tension electricity, works as accessory contact
Also can receive feedback signal after device or master control contactor adhesive, defrosting contactor is directly controlled by the switch that defrosts.If as
The electric current that equipment fault causes is excessive, beyond the safe current of external equipment, then the fuse on corresponding circuit will burn out,
Electric current will not flow into external equipment, thus avoids the damage to other equipment such as annexes.
Further, described high voltage interface include battery interface, motor interface, air-conditioning interface, defrosting interface, steering pump interface,
Air compressor machine interface, DC/DC interface, and each interface is divided into positive pole and two parts of negative pole.
Further, described contactor includes master control contactor, accessory contact device, and master control contactor, accessory contact device are all provided with
There are preliminary filling and main body circuit, precharging circuit have preliminary filling resistance carry out current limliting, it is to avoid starting current is excessive to electric machine controller or attached
Part causes damage.It addition, be connected with wire from battery plus-negative plate respectively, it is used for carrying out Insulation monitoring.
When powering on, annex preliminary filling relay drives annex preliminary filling contactor adhesive, and preliminary filling completes rear attachment relay and drives annex to connect
Tentaculum adhesive, is then turned off annex preliminary filling relay and contactor, and master control preliminary filling relay drives master control preliminary filling contactor to inhale afterwards
Close, after preliminary filling, judge whether voltage reaches requirement, if voltage is not, the relay of annex and master control preliminary filling can be disconnected and contact
Device, and report the fault of the failure that powers on.
Further, each high voltage interface is at least provided with a fuse, and its blowout current matches with external equipment.When
Breaking down when causing electric current excessive, fuse can blow, thus disconnects the high pressure of relevant device, it is to avoid causes external equipment
Further, all there is feedback signal in master control contactor, the loop of accessory contact device.When master control contactor or accessory contact device
After adhesive, adhesive understood equally by feddback relay device, sends feedback signal by low voltage wiring harness, is used for judging accessory contact device, master control
The loop of contactor the most normally works, it is to avoid because high voltage distribution box internal relay, contactor fault cause wagon control to go out
Compared with prior art, superior effect of the present utility model is:
(1) high voltage distribution box described in the utility model have under-voltage protection, overcurrent protection, limiting starting current, Insulation monitoring,
Function, effective support vehicles and the safety of human body such as relay adhesive feedback, service switch, it is ensured that the normal traveling of vehicle.
(2) high voltage distribution box described in the utility model by low pressure go control high pressure (low pressure enable signal according to relay with contact
Device coil voltage selects), controller send enable signal, control corresponding relay adhesive, then sent control letter by relay
Number, control corresponding contactor adhesive, to high pressure on electric machine controller or annex.Control contactor is all removed by relay in each road,
Avoiding directly being controlled contactor, the multilayer through relay and contactor is isolated, and human body will not directly contact high pressure,
(3) when controlling voltage and being setting value, the action current of relay is smaller, and the output of normal controller can directly be driven
Motor type relay, it is to avoid it is inadequate that controller is likely to occur load capacity, it is impossible to drive the problem that contactor etc. causes, other high pressure
Block terminal is directly controlled by rigid line, it is only necessary to controller can export low and high level and can be controlled high voltage distribution box,
So high voltage distribution box of the present utility model is lower to the requirement of peripheral control unit, applicability and security are the highest, use model
(4) there are annex feddback relay device and master control feddback relay device in a road of accessory contact device and master control contactor, when master control or attached
During part contactor adhesive, feedback signal can be sent, it is simple to feedback signal is acquired by controller, it is possible to high voltage distribution box
Fault judges.Feedback signal is conducive to abort situation and the reason of location high voltage distribution box, it is simple to maintenance test, event occurs
Controller can be made during barrier to be fed back in time, improve the security of high voltage distribution box.
(5) high voltage distribution box described in the utility model is with master control and annex precharging circuit, is carried out by preliminary filling resistance when powering on
Current limliting, it is to avoid because starting current is excessive, electric machine controller or annex are burnt out.
(6) can first carry out annex preliminary filling when high voltage distribution box described in the utility model powers on, preliminary filling disconnects preliminary filling and company after terminating
Attachment, then carries out master control preliminary filling, if voltage is inadequate after certain time, then judges to power on unsuccessfully, disconnects all relays
And contactor, successful then continue to power on to master control.When voltage is inadequate, it is possible to disconnect other loads, it is to avoid affect when under-voltage
Electric machine controller and vehicle properly functioning, it is possible to provide under-voltage protection function to vehicle, it is provided that the security of traveling.
(7) high voltage distribution box described in the utility model at each road high voltage interface all at least provided with a fuse, when electric current is excessive
Time fuse can quickly disconnect, it is to avoid burn out external equipment.The model of fuse is selected according to electric current and the voltage range of external equipment
Select, it is impossible to the biggest or the least, otherwise do not have protective effect, or have influence on the normal use of equipment.Thered is provided by fuse
The function of stream protection, it is ensured that the use that equipment and vehicle can be normal, safe.
(8) high voltage distribution box described in the utility model is drawn two wires on battery plus-negative plate respectively and is connected to Insulation monitoring and connects
Mouthful, it is simple to other equipment or controller carry out Insulation monitoring to high-voltage board, it is to avoid when wet weather or the class of insulation are inadequate, electricity
The safety of driver and passenger is worked the mischief by pond electric leakage.
(9) in high voltage distribution box described in the utility model, all of high-voltage great-current loop all can pass through copper inside high voltage distribution box
Row, it is possible to bear the biggest electric current, and heat conductivility is good, it is to avoid wire exposes wire because heating makes crust come off
The safety problem caused.
(10) high voltage distribution box described in the utility model is connected a service switch on the copper bar of anode, when battery occurs
During fault, service switch can fuse, when additionally keeping in repair high voltage distribution box, it is possible to pulls up service switch and disconnects high voltage distribution box
Internal high pressure, it is simple to inspection and the maintenance to high voltage distribution box afterwards, ensures the safety of attendant.
Detailed description of the invention
Below in conjunction with the accompanying drawings and the utility model is described in further detail by detailed description of the invention.
As shown in Fig. 2, Fig. 4, Fig. 5, a kind of height being applied to new-energy automobile and there is multiple protective described in the utility model
Pressure block terminal, including high voltage power distribution box body, high voltage supply part and low pressure control section；Described high voltage power distribution box body by
High voltage distribution box housing, insulated terminal form；Described high voltage supply part by high-tension connector socket, copper bar 1, contactor 8,
Preliminary filling resistance 2, fuse 9, service switch 3 and high voltage interface composition；Described low pressure control section is by relay, low-voltage line
Bundle, low voltage wiring harness keyset, low-voltage interface 5 form.Wherein, described low voltage wiring harness keyset includes fly-wheel diode, uses
Come for contactor 8 afterflow, it is to avoid equipment is caused damage by the counter electromotive force produced when disconnecting contactor 8；Low-voltage interface described in 6
5, as the input interface of low-voltage control signal, are used for connecting the low-voltage control signal of outside, are connected internally to low voltage wiring harness switching
As depicted in figs. 1 and 2, electric machine controller 18 and annex 19 are divided into control and two circuit of preliminary filling, use two groups respectively
Relay and contactor 8 are controlled, a preliminary filling resistance 2 of having connected in precharging circuit.Described contactor 8 contacts for master control
Device 16, preliminary filling contactor 17, described relay is master relay 4, preliminary filling relay 20.Preliminary filling relay 20 when powering on
Adhesive, then drives preliminary filling contactor 17 adhesive, due to the metering function of preliminary filling resistance 2, it is to avoid starting current crosses senior general's electricity
Machine controller 18 or annex 19 burn out.Preliminary filling disconnects preliminary filling relay 20 after terminating, and makes master relay 4 adhesive, and then
Driving master control contactor 16 adhesive, high voltage distribution box is operated in normal operating condition.
As shown in Fig. 2, Fig. 5, low-voltage control signal is connected to relay by keyset, and keyset is connected to fly-wheel diode,
Avoid that reverse electromotive force is excessive causes contactor to damage.All low voltage wiring harness are incorporated on low voltage wiring harness keyset, the most attractive in appearance,
The most safe and reliable, it is simple to the later stage maintenance test to wire harness.Wherein, Fig. 5 is provided with low pressure connector stand near left side,
Being provided with plug-in unit stand near right edge, described plug-in unit stand is respectively equipped with heating cathode and adds antilogous pole.
As in figure 2 it is shown, the contact of contactor 8 is connected to the high voltage interface of external equipment by copper bar 1 and fuse 9.Protect
The model of danger silk 9 selects according to electric current and the voltage range of external equipment, it is impossible to too big, does not otherwise have protective effect, also
Can not select the least, otherwise influence whether the normal use of equipment.
Wherein, described copper bar 1 lower end uses insulated terminal to be fixed, and volume is little, light weight, and insulating capacity is strong, it is possible to
High pressure is isolated with housing, just the high pressure of different circuit can be separated by choosing the insulated terminal of differing heights, improve
As it is shown on figure 3, high voltage interface includes battery interface 6, motor interface 7, air-conditioning interface 11, defrosting interface 12, turns
To pump interface 13, inflating pump interface 14, DC/DC interface 15, each interface is divided into positive pole and two parts of negative pole.In reality
During use, the most suitable interpolation or deletion part of interface.
As shown in Figure 4, the positive pole of the battery of described high voltage distribution box is connected to service switch 3 by copper bar 1, is then passed through one
Individual current sensor 10, is connected to a normally opened contact of contactor 8 by copper bar 1.The heat conduction of copper bar 1 and conductive capability
Extremely strong, compared with using wire, make high voltage distribution box described in the utility model the most attractive in appearance after using copper bar 1, pacify again
Complete practical, it is possible to the most simply to install, and the biggest space will not be taken.Contactor 8 contact can be born bigger
Electric current and voltage, use safe enough.Wherein, the right side of service switch 3 described in Fig. 4 is provided with two core aviation plugs, institute
State two core aviation plugs and be provided with Insulation monitoring positive pole and Insulation monitoring negative pole.
When control signal is connected to relay coil, control voltage and coil voltage matches, if be used for by high voltage distribution box
The system of different voltages, the coil voltage of relay and contactor 8 is also required to change.The action current of relay is less, control
Device processed can directly be driven, and without external power supply, range is more extensive.Contacted by Control motor
Device 18, by multiple isolation, safer.
Use the utility model to have the new-energy automobile of high voltage distribution box of multiple protective, it is possible to automatic or manual to automobile
The high-pressure section of each external equipment upper carries out powering on or power-off, controls high pressure by low pressure, by human body and high-pressure section every
From, and feedback signal can be received after powering on, disconnect high pressure when equipment fault by the protection of fuse, it is possible to safety
Reliably the high voltage electric equipment on car is controlled, and the use safety of high pressure can be ensured in great degree.
The utility model is not limited to above-mentioned embodiment, in the case of without departing substantially from flesh and blood of the present utility model, and ability
Field technique personnel it is contemplated that any deformation, improve, replace and each fall within scope of the present utility model.