CN209224965U

CN209224965U - A kind of pure electric automobile high and low voltage electric distribution switching device

Info

Publication number: CN209224965U
Application number: CN201821818053.4U
Authority: CN
Inventors: 孟明华
Original assignee: Jiangsu Kawei Auto Industrial Group Co Ltd
Current assignee: Jiangsu Kawei Auto Industrial Group Co Ltd
Priority date: 2018-11-06
Filing date: 2018-11-06
Publication date: 2019-08-09
Anticipated expiration: 2028-11-06

Abstract

The utility model discloses a kind of pure electric automobile high and low voltage electric distribution switching devices, including casing, the casing rectangle shell-like structure, and inclined-plane is respectively set in the upper end two sides of casing, and the one end on two inclined-planes is symmetrical arranged fast charge access column and high pressure picks out column, and the other end on inclined-plane is symmetrical arranged trickle charge access socket and low pressure output socket, this pure electric automobile high and low voltage electric distribution switching device is under the action of DC/DC converter and PDU, realize two kinds of charging modes of fast charge and trickle charge, and the high-voltage electricity of power battery can be converted to low tension, it is used for low-voltage electrical apparatus, and whole process will not influence the work of driving motor, and use suspension type assembly method, effectively reduce the damage shaken to internal element, and the radiator of water cooling is added in lower section, guarantee that the operating temperature of internal element is stablized.

Description

A kind of pure electric automobile high and low voltage electric distribution switching device

Technical field

The utility model relates to electric vehicle engineering field, specially a kind of pure electric automobile high and low voltage electric distribution switching dress It sets.

Background technique

With the enhancing of people's environmental consciousness, it is increasingly recognised that conventional fuel oil automobile brings human ecological environment Harm, China's automobile sales volume ranks the first in the world, and in order to protect environment, China has been selected based on pure electric automobile, and plug-in is mixed Long term growth route supplemented by conjunction power vehicle, fuel-cell vehicle.With gradualling mature for electric motor of automobile technology and battery technology, Pure electric automobile using more and more common, pure electric automobile represents the developing direction of future automobile.

Electric car, for the significant power demand for meeting driving motor, is limited in design by low voltage motor technical specification, High voltage supply is often used, moreover, remaining control electric appliance, such as rain brush, diverter, it is all made of high drive, this is just to these Component technical requirements with higher, and there are some potential safety problemss, and the rain brush of orthodox car and diverter etc. are equal Using low-voltage driving, there is more perfect technology, it is therefore desirable to a kind of high pressure of high and low voltage electric distribution switching device to pure electric vehicle Electricity is converted, and under the premise of not influencing driving motor work, is used for low-voltage electrical apparatus.

Utility model content

The technical problems to be solved in the utility model is to overcome existing defect, provides a kind of pure electric automobile high-low pressure and matches Electric switching device realizes two kinds of charging modes of fast charge and trickle charge, and can incite somebody to action under the action of DC/DC converter and PDU The high-voltage electricity of power battery is converted to low tension, uses for low-voltage electrical apparatus, and whole process will not influence the work of driving motor, And suspension type assembly method is used, the damage shaken to internal element is effectively reduced, and the heat dissipation dress of water cooling is added in lower section It sets, guarantees that the operating temperature of internal element is stablized, can effectively solve the problems in background technique.

To achieve the above object, the utility model provides the following technical solutions: a kind of pure electric automobile high and low voltage electric distribution use Switching device, including casing, the casing rectangle shell-like structure, and inclined-plane, and two are respectively set in the upper end two sides of casing The one end on inclined-plane is symmetrical arranged fast charge access column and high pressure picks out column, and the other end on inclined-plane be symmetrical arranged trickle charge access socket and Low pressure output socket, and the upper surface both ends of casing pass through shock absorbing apparatus respectively and are fixedly mounted with the suspension above set, and casing Radiator is fixedly installed in lower end, and the casing is hard PVC shell, and the inner wall of casing is laid with gauze screen, and the gauze screen is PDU is arranged in metal mesh, the casing internal, and the output end of the trickle charge access socket is electrically connected with the input terminal of OBC unit, institute The output end for stating OBC unit is electrically connected with the input terminal of DC/DC converter, and the output end and low pressure of the DC/DC converter are defeated The input terminal electrical connection of socket out, the OBC unit with PDU is two-way is electrically connected, the PDU with vehicle control syetem is two-way is electrically connected It connects, the PDU picks out that column is two-way to be electrically connected with high pressure, and the output end of fast charge access column is electrically connected with the input terminal of PDU, described OBC unit, DC/DC converter are fixedly mounted on casing internal.

As a kind of optimal technical scheme of the utility model, electric machine controller, the motor is arranged in the casing internal The input terminal of controller is electrically connected with the output end of PDU.

As a kind of optimal technical scheme of the utility model, the PDU and high pressure pick out and service switch are arranged between column, The service switch picks out that column is two-way to be electrically connected with PDU with high pressure respectively.

As a kind of optimal technical scheme of the utility model, the shock absorbing apparatus includes upper snap-gauge and lower snap-gauge, described Lower snap-gauge is fixedly connected with the upper surface of casing, and upper snap-gauge and lower snap-gauge are " C " shape structure, and upper snap-gauge and lower snap-gauge Centre bends inwards along its length, and the bending area coincidence of upper snap-gauge and lower snap-gauge symmetrically assembles.

As a kind of optimal technical scheme of the utility model, the upper surface of the lower snap-gauge is symmetrical arranged two root long spiral shells Column, and long threaded rod is arranged vertically, and upper snap-gauge surface is arranged through-hole, the long threaded rod run through the through-hole on upper snap-gauge surface, and on Pocketed springs outside long threaded rod between snap-gauge and lower snap-gauge.

As a kind of optimal technical scheme of the utility model, gasket is set with outside the long threaded rod above the upper snap-gauge, The gasket is rubber sheet gasket, and the end of long threaded rod is by being threadedly engaged installation locking nut.

As a kind of optimal technical scheme of the utility model, the radiator upper end passes through the bottom of connecting plate and casing Portion is fixedly connected, and the heat sink interior is uniformly arranged heat dissipation grid, and the heat dissipation grid inner transverse runs through heat-dissipating pipe, described to dissipate Heat pipe penetrates casing internal, and coils in casing internal in serpentine.

As a kind of optimal technical scheme of the utility model, circulating pump, the circulating pump are concatenated inside the heat-dissipating pipe Input terminal be electrically connected with the output end of low pressure output socket.

As a kind of optimal technical scheme of the utility model, blower is arranged in the space between the heat dissipation grid and casing, The input terminal of the blower is electrically connected with the output end of low pressure output socket.

Compared with prior art, the utility model has the beneficial effects that this pure electric automobile high and low voltage electric distribution switching dress It sets by low-voltage AC being converted to low-voltage DC, for low tension under the collective effect of OBC unit and DC/DC converter Source charging, and by the effect of PDU, realize the low pressure charging of power battery, but low pressure charging rate is slower, therefore integrated fast Fill access column, directly make high-voltage electricity by PDU effect directly charge for power battery, charging rate is fast, realize fast charge and Two kinds of charging modes of trickle charge；

The high-voltage electricity of power battery can be by this pure electric automobile high and low voltage electric distribution through PDU reverse conversion with switching device Low tension is used for low-voltage electrical apparatus, and can be charged for low-tension supply, and whole process will not influence the work of driving motor, Vehicle uses high voltage supply except driving motor, guarantees output power, and other equipment use low-voltage power supply, guarantee operational safety, The requirement to equipment is reduced, production cost is reduced；

This pure electric automobile high and low voltage electric distribution is fixedly mounted using shock absorbing apparatus with the suspension above set with switching device, is utilized Underslung assembly method, and upper snap-gauge inside shock absorbing apparatus and lower snap-gauge can change opposite under the action of the spring Positional relationship can absorb part vibration energy, to effectively reduce the damage shaken to internal element, prolong the service life, Guarantee traffic safety；

Gauze screen, the effectively electricity outside shielding is arranged in casing internal in this pure electric automobile high and low voltage electric distribution switching device Magnetic disturbance, and the radiator of addition water cooling is led to casing internal heat by the recirculated water inside heat-dissipating pipe below casing It crosses heat dissipation grid to be quickly discharged, guarantees that the operating temperature of internal element is stablized.

Detailed description of the invention

FIG. 1 is a schematic structural view of the utility model；

Fig. 2 is the utility model shock absorbing apparatus and radiator assembling schematic diagram；

Fig. 3 is the utility model casing internal assembling schematic diagram；

Fig. 4 is the utility model electric elements connection schematic diagram.

In figure: 1 casing, 2 fast charges access column, 3 trickle charges access socket, 4 shock absorbing apparatus, 5 springs, 6 gaskets, 7 locking nuts, 8 radiators, 9 heat dissipation grid, 10 heat-dissipating pipes, 11 circulating pumps, 12 blowers, 13 gauze screens, 14 low pressure output sockets, 15 DC/DC become Parallel operation, 16 OBC units, 17 PDU, 18 service switch, 19 high pressures pick out column, 20 electric machine controllers.

Specific embodiment

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work Every other embodiment obtained, fall within the protection scope of the utility model.

Fig. 1-4 is please referred to, the utility model provides a kind of technical solution: a kind of pure electric automobile high and low voltage electric distribution switching Device, including casing 1,1 rectangle shell-like structure of casing, and the upper end two sides of casing 1 are respectively set inclined-plane, and two inclined-planes One end is symmetrical arranged fast charge access column 2 and high pressure picks out column 19, and the other end on inclined-plane is symmetrical arranged trickle charge access socket 3 and low Output socket 14 is pressed, and the upper surface both ends of casing 1 pass through shock absorbing apparatus 4 respectively and are fixedly mounted with the suspension above set, and casing 1 Lower end radiator 8 is fixedly installed, casing 1 is hard PVC shell, reduces by 1 mass of casing, to reduce gross combination weight, is reduced Energy consumption, and the inner wall of casing 1 is laid with gauze screen 13, gauze screen 13 is metal mesh, and PDU 17, trickle charge access are arranged inside casing 1 The output end of socket 3 is electrically connected with the input terminal of OBC unit 16, the input of the output end and DC/DC converter 15 of OBC unit 16 End electrical connection, the output end of DC/DC converter 15 are electrically connected with the input terminal of low pressure output socket 14, OBC unit 16 and PDU 17 two-way electrical connections, PDU 17 with vehicle control syetem is two-way is electrically connected, PDU 17 picks out that column 19 is two-way to be electrically connected with high pressure, and The output end of fast charge access column 2 is electrically connected with the input terminal of PDU 17, and OBC unit 16, DC/DC converter 15 are fixedly mounted on Inside casing 1；

Electric machine controller 20 is set inside casing 1, the input terminal of electric machine controller 20 is electrically connected with the output end of PDU 17, Using high pressure electric drive motor, guarantee output power；

PDU 17 and high pressure pick out between column 19 setting service switch 18, service switch 18 respectively with PDU 17 and high-voltage connecting The two-way electrical connection of column 19 out can make power battery be in disconnected when overhauling to equipment under the action of service switch 18 Electricity condition guarantees the safety of service personnel；

Shock absorbing apparatus 4 includes upper snap-gauge and lower snap-gauge, and lower snap-gauge is fixedly connected with the upper surface of casing 1, and upper snap-gauge with Lower snap-gauge is " C " shape structure, and the centre of upper snap-gauge and lower snap-gauge bends inwards along its length, and upper snap-gauge and lower snap-gauge Bending area coincidence symmetrically assemble；

The upper surface of lower snap-gauge is symmetrical arranged two root long studs, and long threaded rod is arranged vertically, and the setting of upper snap-gauge surface is logical Hole, long threaded rod run through the through-hole on upper snap-gauge surface, and pocketed springs 5 outside the long threaded rod between upper snap-gauge and lower snap-gauge；

Gasket 6 is set with outside long threaded rod above upper snap-gauge, gasket 6 is rubber sheet gasket, and the end of long threaded rod passes through spiral shell Line is coupled locking nut 7；

8 upper end of radiator is fixedly connected by connecting plate with the bottom of casing 1, is uniformly arranged inside radiator 8 scattered Hot grid 9, heat dissipation 9 inner transverse of grid run through heat-dissipating pipe 10, and heat-dissipating pipe 10 penetrates inside casing 1, and are in serpentine inside casing 1 Coiling increases surface area of the heat-dissipating pipe 10 inside casing 1, thus raising heat exchanging efficiency；

Circulating pump 11 is concatenated inside heat-dissipating pipe 10, the output end of the input terminal and low pressure output socket 14 of circulating pump 11 is electrically connected It connects, accelerates medium circulation speed, accelerate heat transfer；

The space radiated between grid 9 and casing 1 is arranged blower 12, and the input terminal of blower 12 is defeated with low pressure output socket 14 Outlet electrical connection accelerates heat dissipation 9 outer gas stream speed of grid, accelerated heat diffusion, to guarantee radiating efficiency.

When in use: when carrying out trickle charge, the alternating current of low pressure, by the electric current of OBC unit 16 and DC/DC converter 15 Conversion, is converted into low-voltage DC, charges for low-tension supply, and is converted to high voltage direct current by PDU 17, for power Battery charging, when carrying out fast charge, high voltage direct current is directly over PDU 17 and charges to power battery, when in driving process In, low-tension supply electric power is insufficient, then the high-voltage electricity of power battery is low pressure by PDU 17 and 15 reverse conversion of DC/DC converter Direct current is used for low-voltage electrical apparatus, guarantees traffic safety, and is charged in driving process, and circulating pump 11 works, and makes in heat-dissipating pipe 10 Medium persistent loop in portion's accelerates heat dissipation grid 9 to 1 internal heat of casing be discharged by the grid 9 that radiate, while blower 12 works The air-flow velocity on surface accelerates heat diffusion, guarantees heat dissipation effect.

The utility model is by the way that under the collective effect of OBC unit 16 and DC/DC converter 15, low-voltage AC is converted to Low-voltage DC charges for low-tension supply, and by the effect of PDU 17, realizes that the low pressure of power battery charges, but low pressure Charging rate is slower, therefore integrated fast charge accesses column 2, acts on high-voltage electricity by PDU 17 and directly carries out for power battery Charging, charging rate is fast, realizes two kinds of charging modes of fast charge and trickle charge；

This pure electric automobile high and low voltage electric distribution switching device can reversely turn the high-voltage electricity of power battery through PDU 17 It is changed to low tension, is used for low-voltage electrical apparatus, and can charge for low-tension supply, and whole process will not influence the work of driving motor To make, vehicle uses high voltage supply except driving motor, guarantee output power, and other equipment use low-voltage power supply, guarantee operation peace Entirely, the requirement to equipment is reduced, production cost is reduced；

This pure electric automobile high and low voltage electric distribution is fixedly mounted using shock absorbing apparatus 4 with the suspension above set with switching device, benefit Upper snap-gauge and lower snap-gauge with underslung assembly method, and inside shock absorbing apparatus 4 can change under the action of spring 5 Relative positional relationship can absorb part vibration energy, to effectively reduce the damage shaken to internal element, extend and use the longevity Life guarantees traffic safety；

Gauze screen 13 is arranged in this pure electric automobile high and low voltage electric distribution switching device inside casing 1, and effectively shielding is external Electromagnetic interference, and below casing 1 be added water cooling radiator 8, by the recirculated water inside heat-dissipating pipe 10, by casing 1 Internal heat is quickly discharged by heat dissipation grid 9, guarantees that the operating temperature of internal element is stablized.

While there has been shown and described that the embodiments of the present invention, for the ordinary skill in the art, It is understood that these embodiments can be carried out with a variety of variations in the case where not departing from the principles of the present invention and spirit, repaired Change, replacement and variant, the scope of the utility model is defined by the appended claims and the equivalents thereof.

Claims

1. a kind of pure electric automobile high and low voltage electric distribution switching device, including casing (1), it is characterised in that: casing (1) square Shape shell-like structure, and inclined-plane is respectively set in the upper end two sides of casing (1), and the one end on two inclined-planes is symmetrical arranged fast charge access Column (2) and high pressure pick out column (19), and the other end on inclined-plane is symmetrical arranged trickle charge access socket (3) and low pressure output socket (14), and the upper surface both ends of casing (1) pass through shock absorbing apparatus (4) respectively and are fixedly mounted with the suspension above set, and casing (1) Radiator (8) are fixedly installed in lower end, and the casing (1) is hard PVC shell, and the inner wall of casing (1) is laid with gauze screen (13), The gauze screen (13) is metal mesh, and PDU (17) are arranged inside the casing (1), the output end of trickle charge access socket (3) It is electrically connected with the input terminal of OBC unit (16), the output end of the OBC unit (16) and the input terminal of DC/DC converter (15) Electrical connection, the output end of the DC/DC converter (15) are electrically connected with the input terminal of low pressure output socket (14), and the OBC is mono- First (16) with PDU (17) is two-way is electrically connected, the PDU (17) with vehicle control syetem is two-way is electrically connected, the PDU (17) and height Column (19) two-way electrical connection is crimped out, and the output end of fast charge access column (2) is electrically connected with the input terminal of PDU (17), the OBC It is internal that unit (16), DC/DC converter (15) are fixedly mounted on casing (1).

2. a kind of pure electric automobile high and low voltage electric distribution switching device according to claim 1, it is characterised in that: the machine Electric machine controller (20) are set inside shell (1), the output end of the input terminal and PDU (17) of the electric machine controller (20) is electrically connected It connects.

3. a kind of pure electric automobile high and low voltage electric distribution switching device according to claim 1, it is characterised in that: described PDU (17) and high pressure pick out between column (19) setting service switch (18), the service switch (18) respectively with it is PDU (17) and high Crimp out column (19) two-way electrical connection.

4. a kind of pure electric automobile high and low voltage electric distribution switching device according to claim 1, it is characterised in that: described to keep away Shaking device (4) includes upper snap-gauge and lower snap-gauge, and the lower snap-gauge is fixedly connected with the upper surface of casing (1), and upper snap-gauge is under Snap-gauge is " C " shape structure, and the centre of upper snap-gauge and lower snap-gauge bends inwards along its length, and upper snap-gauge and lower snap-gauge Bending area coincidence symmetrically assembles.

5. a kind of pure electric automobile high and low voltage electric distribution switching device according to claim 4, it is characterised in that: under described The upper surface of snap-gauge is symmetrical arranged two root long studs, and long threaded rod is arranged vertically, and through-hole, the long spiral shell is arranged in upper snap-gauge surface Column runs through the through-hole on upper snap-gauge surface, and pocketed springs (5) outside the long threaded rod between upper snap-gauge and lower snap-gauge.

6. a kind of pure electric automobile high and low voltage electric distribution switching device according to claim 5, it is characterised in that: on described Gasket (6) are set with outside long threaded rod above snap-gauge, the gasket (6) is rubber sheet gasket, and the end of long threaded rod passes through screw thread It is coupled locking nut (7).

7. a kind of pure electric automobile high and low voltage electric distribution switching device according to claim 1, it is characterised in that: described to dissipate Thermal (8) upper end is fixedly connected by connecting plate with the bottom of casing (1), is uniformly arranged inside the radiator (8) scattered Hot grid (9), heat dissipation grid (9) inner transverse run through heat-dissipating pipe (10), and the heat-dissipating pipe (10) penetrates casing (1) inside, and It is coiled inside casing (1) in serpentine.

8. a kind of pure electric automobile high and low voltage electric distribution switching device according to claim 7, it is characterised in that: described to dissipate Circulating pump (11) are concatenated inside heat pipe (10), the input terminal of the circulating pump (11) and the output end electricity of low pressure output socket (14) Connection.

9. a kind of pure electric automobile high and low voltage electric distribution switching device according to claim 7, it is characterised in that: described to dissipate Blower (12) are arranged in space between hot grid (9) and casing (1), the input terminal of the blower (12) and low pressure output socket (14) Output end electrical connection.