CN204243871U - Electric automobile multi-channel DC conversion low tension feed unit - Google Patents
Electric automobile multi-channel DC conversion low tension feed unit Download PDFInfo
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- CN204243871U CN204243871U CN201420663351.6U CN201420663351U CN204243871U CN 204243871 U CN204243871 U CN 204243871U CN 201420663351 U CN201420663351 U CN 201420663351U CN 204243871 U CN204243871 U CN 204243871U
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Abstract
The utility model proposes a kind of electric automobile multi-channel DC conversion low tension feed unit, N number of DC converter, high-pressure power accumulator E1, booster battery E2, high-pressure power accumulator E1 high-voltage positive electrode connects DC converter high-voltage positive electrode input, described DC converter high voltage negative input connects high-pressure power accumulator E1 high voltage negative, described DC converter low pressure negative input connects booster battery E2 low pressure negative pole, described low pressure cathode output end connects load, between described N number of DC converter, high pressure Enable Pin is in parallel, the power control terminal of the control relay J1 of high pressure Enable Pin is connected with BMS power supply input pin, for controlling output LOW voltage, described N >=2.
Description
Technical field
The utility model relates to electric automobile low-voltage power supply field, particularly relates to a kind of electric automobile multi-channel DC conversion low tension feed unit.
Background technology
Electric automobile low pressure 12V load gross power is at present at about 1200W, along with the fast development of Intelligent mobile equipment, as maximum can the carrier of mobile device, the low-voltage load that electric automobile configures can increase further, and present many producers all adopt the DC converter of a configuration KW level and a 12V boosting battery to come together to power to car load low-voltage load.This single low-voltage power supply mode, once DC converter breaks down, boosting battery is shorter to the power-on time of load on car, can affect running time and the safety of vehicle.
Utility model content
The utility model is intended at least solve the technical problem existed in prior art, especially innovatively proposes a kind of electric automobile multi-channel DC conversion low tension feed unit.
In order to realize above-mentioned purpose of the present utility model, the utility model provides a kind of electric automobile multi-channel DC conversion low tension feed unit, and its key is, comprising: N number of DC converter, high-pressure power accumulator E1, booster battery E2,
High-pressure power accumulator E1 high-voltage positive electrode connects DC converter high-voltage positive electrode input, described DC converter high voltage negative input connects high-pressure power accumulator E1 high voltage negative, described DC converter low pressure negative input connects booster battery E2 low pressure negative pole, described low pressure cathode output end connects load, in parallel between described N number of DC converter high pressure Enable Pin, the power control terminal of the control relay J1 of high pressure Enable Pin is connected with BMS power supply input pin, for controlling output LOW voltage, described N >=2.
The beneficial effect of technique scheme is: because each DC converter power output is little, rapid heat dissipation during work, and not fragile useful life extends; Because each is only all independently to a part of load supplying, a certain exactly breaks down, and also reduces, thus improve running time and safety to car load impact.
Described electric automobile multi-channel DC conversion low tension feed unit, preferably, also comprises fuse,
Described fuse one end connects high-pressure power accumulator E1 high-voltage positive electrode, and the described fuse other end connects DC converter high-voltage positive electrode input, is all provided with fuse in described N number of DC converter.
The beneficial effect of technique scheme is: carry out overload protection by fuse to DC converter.
Described electric automobile multi-channel DC conversion low tension feed unit, preferably, also comprises load switch,
Described load switch one end connects booster battery low pressure positive pole, and the described load switch other end connects load.
The beneficial effect of technique scheme is: load switch can effectively control load work.
In sum, owing to have employed technique scheme, the beneficial effects of the utility model are:
Because each DC converter power output is little, rapid heat dissipation during work, not fragile useful life extends;
Because each is only all independently to a part of load supplying, a certain exactly breaks down, and also reduces, thus improve running time and safety to car load impact;
Reduce DC converter cost of manufacture.
Additional aspect of the present utility model and advantage will part provide in the following description, and part will become obvious from the following description, or be recognized by practice of the present utility model.
Accompanying drawing explanation
Above-mentioned and/or additional aspect of the present utility model and advantage will become obvious and easy understand from accompanying drawing below combining to the description of embodiment, wherein:
Fig. 1 is catenation principle schematic diagram of the present utility model.
Embodiment
Be described below in detail embodiment of the present utility model, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Being exemplary below by the embodiment be described with reference to the drawings, only for explaining the utility model, and can not being interpreted as restriction of the present utility model.
In description of the present utility model, it will be appreciated that, term " longitudinal direction ", " transverse direction ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end " " interior ", orientation or the position relationship of the instruction such as " outward " are based on orientation shown in the drawings or position relationship, only the utility model and simplified characterization for convenience of description, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore can not be interpreted as restriction of the present utility model.
In description of the present utility model, unless otherwise prescribed and limit, it should be noted that, term " installation ", " being connected ", " connection " should be interpreted broadly, such as, can be mechanical connection or electrical connection, also can be the connection of two element internals, can be directly be connected, also indirectly can be connected by intermediary, for the ordinary skill in the art, the concrete meaning of above-mentioned term can be understood as the case may be.
The utility model provides a kind of electric automobile multi-channel DC conversion low tension feed unit, and its key is, comprising: N number of DC converter, high-pressure power accumulator E1, booster battery E2,
High-pressure power accumulator E1 high-voltage positive electrode connects DC converter high-voltage positive electrode input, described DC converter high voltage negative input connects high-pressure power accumulator E1 high voltage negative, described DC converter low pressure negative input connects booster battery E2 low pressure negative pole, described low pressure cathode output end connects load, in parallel between described N number of DC converter high pressure Enable Pin, the power control terminal of the control relay J1 of high pressure Enable Pin is connected with BMS power supply input pin, for controlling output LOW voltage, described N >=2.
The beneficial effect of technique scheme is: because each DC converter power output is little, rapid heat dissipation during work, and not fragile useful life extends; Because each is only all independently to a part of load supplying, a certain exactly breaks down, and also reduces, thus improve running time and safety to car load impact.
Described electric automobile multi-channel DC conversion low tension feed unit, preferably, also comprises fuse,
Described fuse one end connects high-pressure power accumulator E1 high-voltage positive electrode, and the described fuse other end connects DC converter high-voltage positive electrode input, is all provided with fuse in described N number of DC converter.
The beneficial effect of technique scheme is: carry out overload protection by fuse to DC converter.
Described electric automobile multi-channel DC conversion low tension feed unit, preferably, also comprises load switch,
Described load switch one end connects booster battery low pressure positive pole, and the described load switch other end connects load.
The beneficial effect of technique scheme is: load switch can effectively control load work.
In Fig. 1, E1 is high-pressure power accumulator group, and E2 is 12V booster battery; In DC converter 1, DC converter 2, DC converter 3 1-be high pressure Enable Pin, after the positive pole of 1 pin and high-pressure power accumulator group is connected, DC converter is just started working, and be the low pressure of the 12V isolated with input by the high pressure conversion of input, 2-be the low pressure cathode output end of 12V, 3-be high-voltage positive electrode input, 4-be high voltage negative input, 5-be low pressure negative input; F1, F2, F3 are safety plate; K1, K2, K3 are respective load switch on car, load 1 comprises the power supply of front and back fog lamp, Brake lamp, reversing lamp, radar for backing car, air blast even load, load 2 comprises the power supply of servo steering system, police warning device even load, and load 3 comprises the power supply of the important loads such as battery manager, electric machine controller, instrument, brake vacuum boost pump, accelerator, direction indicator lamp, headlight.
In order to overcome the problems referred to above, the design adopts 3 small power DC converters to meet the power demands of gross vehicle load, and each DC converter is only to a part of load supplying, and principle as shown in Figure 1.When after opening the key switch on car or after starting charging, the 12V that the power supply input pin of battery manager BMS is sent here powers, arrive relay J 1, relay J 1 line Bao get electricity makes normally opened contact J1-1 close conducting, start working after making the Enable Pin of 3 DC converter obtain high-tension electricity, independently 12V voltage is obtained separately at their output, after the negative pole of the low-voltage output of three DC converter connects electric chassis-body, form common electric voltage negative pole, wherein DC converter 3 starts to charge to boosting battery E2, as closed K1, load 1 obtains the respective switch that electric work K1 is load 1, as closed K2, load 2 obtains the respective switch that electric work K2 is load 2, as closed K3, load 3 obtains the respective switch that electric work K3 is load 3, .
The beneficial effects of the utility model are:
1, because each DC converter power output is little, rapid heat dissipation during work, not fragile useful life extends;
2, because each is only all independently to a part of load supplying, a certain exactly breaks down, and also reduces, thus improve running time and safety to car load impact;
3, reduce DC converter cost of manufacture.
In the description of this specification, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present utility model or example.In this manual, identical embodiment or example are not necessarily referred to the schematic representation of above-mentioned term.And the specific features of description, structure, material or feature can combine in an appropriate manner in any one or more embodiment or example.
Although illustrate and described embodiment of the present utility model, those having ordinary skill in the art will appreciate that: can carry out multiple change, amendment, replacement and modification to these embodiments when not departing from principle of the present utility model and aim, scope of the present utility model is by claim and equivalents thereof.
Claims (3)
1. an electric automobile multi-channel DC conversion low tension feed unit, is characterized in that, comprising: N number of DC converter, high-pressure power accumulator (E1), booster battery (E2),
High-pressure power accumulator (E1) high-voltage positive electrode connects DC converter high-voltage positive electrode input, described DC converter high voltage negative input connects high-pressure power accumulator (E1) high voltage negative, described DC converter low pressure negative input connects booster battery (E2) low pressure negative pole, described low pressure cathode output end connects load, in parallel between described N number of DC converter high pressure Enable Pin, the power control terminal of the control relay J1 of high pressure Enable Pin is connected with BMS power supply input pin, for controlling output LOW voltage, described N >=2.
2. electric automobile multi-channel DC conversion low tension feed unit according to claim 1, is characterized in that, also comprise fuse,
Described fuse one end connects high-pressure power accumulator (E1) high-voltage positive electrode, and the described fuse other end connects DC converter high-voltage positive electrode input, is all provided with fuse in described N number of DC converter.
3. electric automobile multi-channel DC conversion low tension feed unit according to claim 1, is characterized in that, also comprise load switch,
Described load switch one end connects booster battery low pressure positive pole, and the described load switch other end connects load.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420663351.6U CN204243871U (en) | 2014-11-07 | 2014-11-07 | Electric automobile multi-channel DC conversion low tension feed unit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420663351.6U CN204243871U (en) | 2014-11-07 | 2014-11-07 | Electric automobile multi-channel DC conversion low tension feed unit |
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| CN204243871U true CN204243871U (en) | 2015-04-01 |
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| CN201420663351.6U Active CN204243871U (en) | 2014-11-07 | 2014-11-07 | Electric automobile multi-channel DC conversion low tension feed unit |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106059032A (en) * | 2015-04-09 | 2016-10-26 | 奥迪股份公司 | Electric transportation tool with rapid charging function |
| CN108206627A (en) * | 2016-12-16 | 2018-06-26 | 中天海洋系统有限公司 | DC-dc conversion equipment |
-
2014
- 2014-11-07 CN CN201420663351.6U patent/CN204243871U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106059032A (en) * | 2015-04-09 | 2016-10-26 | 奥迪股份公司 | Electric transportation tool with rapid charging function |
| CN108206627A (en) * | 2016-12-16 | 2018-06-26 | 中天海洋系统有限公司 | DC-dc conversion equipment |
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