CN207801501U - A kind of electronic device with pre-charge circuit - Google Patents
A kind of electronic device with pre-charge circuit Download PDFInfo
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- CN207801501U CN207801501U CN201721747083.6U CN201721747083U CN207801501U CN 207801501 U CN207801501 U CN 207801501U CN 201721747083 U CN201721747083 U CN 201721747083U CN 207801501 U CN207801501 U CN 207801501U
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- charge
- circuit
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- relay circuit
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Abstract
The utility model discloses a kind of electronic device with pre-charge circuit, the pre-charge circuit of the utility model includes：Energy-storage battery group, pre-charge-relay circuit, positive relay circuit, negative relay circuit, battery management unit and load, the pre-charge-relay circuit is connected in parallel with the positive relay circuit, one end of the positive relay circuit connects the output end of the Anode and battery administrative unit of the energy-storage battery group, the other end connects the anode of the load, one end of the negative relay circuit connects the output end of the cathode and battery management unit of the energy-storage battery group, the other end connects the cathode of the load, the input terminal of the battery management unit is connected by CAN bus and the output end of load.The electronic device with pre-charge circuit of the utility model, it is simple in structure, by the high-voltage value of CAN bus feedback detection, reduce the high-voltage detecting circuit of pre-charge circuit, saves cost.
Description
Technical field
The utility model is related to a kind of electronic devices with pre-charge circuit, belong to electric vehicle pre-charging technology neck
Domain.
Background technology
Development with Chinese industrial and people's the accelerating rhythm of life, the automobile of the walking-replacing tool as people is increasingly
The influence of the problems such as more, and orthodox car is to energy crisis and environmental pollution is non-negligible, so energy saving, zero-emission electronic vapour
Vehicle becomes development trend.In order to improve electric vehicle performance and capacity usage ratio, the voltage class of power battery is also higher and higher.
It is higher than 60V less than 35V and electric vehicle voltage according to the safe voltage of human body, preliminary filling should be taken in high-pressure system power up
The method of electricity is come to avoid impacting with high pressure, precharge be the important link that electric vehicle cannot lack.
Electric automobile high-voltage precharge is mainly before high pressure powers on, and power battery is needed to bulky capacitor in electric machine controller
Dash current is reduced, to reduce spark arcing when inside battery contactor is closed to increase the peace of high pressure into line precharge
Quan Xing.The method that electric vehicle realizes precharge at present be largely first closed by power battery management system power battery it is always negative after
Electric appliance recloses pre-charge-relay, and stagnation pressure inside battery management system pre-charge-relay is detected by high-voltage detecting circuit
Whether succeed to judge to be pre-charged with the difference of external stagnation pressure.
Utility model content
The purpose of this utility model is to provide a kind of electronic device with pre-charge circuit, the pre-charge circuit packets
It includes：Energy-storage battery group, positive relay circuit, is born relay circuit, battery management unit and is born pre-charge-relay circuit
Carry, it is simple in structure, by the high-voltage value of CAN bus feedback detection, reduce the high-voltage detecting circuit of pre-charge circuit, save at
This.
It is as follows that the utility model provides technical solution：
On the one hand, the utility model provides a kind of electronic device with pre-charge circuit, the pre-charge circuit packet
It includes：Energy-storage battery group, positive relay circuit, is born relay circuit, battery management unit and is born pre-charge-relay circuit
It carries, the pre-charge-relay circuit is connected in parallel with the positive relay circuit, one end connection of the positive relay circuit
The output end of the Anode and battery administrative unit of the energy-storage battery group, the other end connect the anode of the load, it is described it is negative after
One end of appliance circuit connects the output end of the cathode and battery management unit of the energy-storage battery group, and other end connection is described negative
The input terminal of the cathode of load, the battery management unit is connected by CAN bus and the output end of load,
When the energy-storage battery group high pressure powers on, the negative relay circuit and pre-charge-relay circuit are led successively
Logical, the precharged relay circuit of energy-storage battery group is pre-charged to the load, while the load is passed by CAN bus
Defeated feedback high-voltage value give the battery management unit, when the feedback high-voltage value reaches scheduled voltage, it is described be pre-charged after
Appliance circuit disconnects, and the positive relay circuit conducting, precharge is completed.
An embodiment according to the present utility model, the pre-charge circuit further include A-battery, the A-battery
Anode be separately connected the input terminal of the battery management unit and the output end of load.
Another embodiment according to the present utility model, the pre-charge-relay circuit includes pre-charge resistance and preliminary filling
Electrical relay, the pre-charge resistance and pre-charge-relay are connected in series with, and the pre-charge-relay includes first switch member
Part and first coil, the anode of the first switching element connect the anode of the energy-storage battery group through the pre-charge resistance,
Cathode connects the anode of the load.The anode of the first coil connects the output end of the battery management unit, and cathode connects
Connect the anode of the A-battery.
Another embodiment according to the present utility model, the positive relay circuit include a total positive relay, described total
Positive relay includes second switch element and the second coil, and the anode of the second switch element connects the energy-storage battery group
Anode, cathode connect the cathode of the first switching element, and the anode of second coil connects the battery management unit
Output end, cathode connect the anode of the A-battery.
Another embodiment according to the present utility model, it includes a total negative relay to bear relay circuit, it is described it is total it is negative after
Electric appliance includes third switch element and tertiary coil, and the anode of the third switch element connects the negative of the energy-storage battery group
Pole, cathode connect the cathode of the load, and the anode of the tertiary coil connects the output end of the battery management unit, cathode
Connect the anode of the A-battery.
Another embodiment according to the present utility model, the load are electric machine controller.
Another embodiment according to the present utility model, the scheduled voltage are the 90% of energy-storage battery group high pressure.
Another embodiment according to the present utility model, the A-battery are 12V lead-acid batteries.
The beneficial effects of the utility model are as follows：
The pre-charge circuit of the electronic device with pre-charge circuit of the utility model includes：Energy-storage battery group, preliminary filling
Electrical relay circuit, positive relay circuit, negative relay circuit, battery management unit and load, it is simple in structure, by passing through
CAN bus connects battery management unit and load, and when high pressure powers on, negative relay circuit is first connected in battery management unit, then
Pre-charge-relay circuit is connected, the precharged relay circuit of energy-storage battery group is pre-charged to load, while load detecting is high
Pressure value transmits feedback high-voltage value to battery management unit, when feedback high-voltage value reaches scheduled voltage, in advance by CAN bus
Charge relay circuit disconnects, and positive relay circuit conducting, precharge is completed, and the utility model is fed back by CAN bus to be detected
High-voltage value, reduce the high-voltage detecting circuit of pre-charge circuit, save cost.
Description of the drawings
Fig. 1 is a kind of structural representation of one embodiment of electronic device with pre-charge circuit of the utility model
Figure；
Fig. 2 is that a kind of circuit connection of one embodiment of electronic device with pre-charge circuit of the utility model is shown
It is intended to, wherein solid line indicates that high-pressure connection line, dotted line indicate that low pressure connecting line, chain-dotted line indicate CAN connecting lines.
Specific implementation mode
In order to make the technical problems, technical solutions and advantages to be solved by the utility model clearer, below in conjunction with attached drawing
And specific embodiment is described in detail.
As shown in Figs. 1-2, the utility model embodiment provides a kind of electronics with pre-charge circuit
Device, pre-charge circuit include：Energy-storage battery group 1, pre-charge-relay circuit 2, positive relay circuit 3, it is negative after
Appliance circuit 4, battery management unit 5 and load 6, pre-charge-relay circuit is connected in parallel with positive relay circuit, just after
The output end of the Anode and battery administrative unit of one end connection energy-storage battery group of appliance circuit, other end connection load is just
Pole, bears the output end of the cathode and battery management unit of one end connection energy-storage battery group of relay circuit, and other end connection is negative
The input terminal of the cathode of load, battery management unit is connect by CAN bus 7 with the output end of load,
When energy-storage battery group high pressure powers on, negative relay circuit and pre-charge-relay circuit are led successively
Logical, the precharged relay circuit of energy-storage battery group gives load to be pre-charged, while loading and being transmitted instead by CAN bus
High-voltage value is presented to battery management unit, when feeding back high-voltage value and reaching scheduled voltage, pre-charge-relay circuit disconnects, just after
Appliance circuit is connected, and precharge is completed.
The pre-charge circuit of the electronic device with pre-charge circuit of the utility model embodiment includes：Energy-storage battery
Group, pre-charge-relay circuit, positive relay circuit, negative relay circuit, battery management unit and load, it is simple in structure,
Battery management unit and load are connected by CAN bus, when high pressure powers on, negative relay electricity is first connected in battery management unit
Road, then pre-charge-relay circuit is connected, the precharged relay circuit of energy-storage battery group is pre-charged to load, while loading inspection
High-voltage value is surveyed, feedback high-voltage value is transmitted to battery management unit, when feedback high-voltage value reaches scheduled voltage by CAN bus
When, pre-charge-relay circuit disconnects, and positive relay circuit conducting, precharge is completed, and the utility model embodiment is total by CAN
The high-voltage value of line feedback detection, reduces the high-voltage detecting circuit of pre-charge circuit, saves cost.
As one for example, the pre-charge circuit of the utility model embodiment further includes A-battery 8, A-battery
Anode be separately connected the input terminal of battery management unit and the output end of load.The A-battery master of the utility model embodiment
To be that battery management unit and load etc. provide operating voltage.
As another for example, the pre-charge-relay circuit 2 of the utility model embodiment includes pre-charge resistance
21 and pre-charge-relay 22, pre-charge resistance and pre-charge-relay be connected in series with, pre-charge-relay 22 is opened including first
Element 221 and first coil 222 are closed, the anode of the precharged resistance connection energy-storage battery group of anode of first switching element is born
The anode of pole connection load.The output end of the anode connection battery management unit of first coil, cathode are connecting A-battery just
Pole.
As another for example, the positive relay circuit 3 of the utility model embodiment includes a total positive relay 31,
Total positive relay includes second switch element 311 and the second coil 312, and the anode of second switch element connects energy-storage battery group
Anode, cathode connect the cathode of first switching element, the output end of the anode connection battery management unit of the second coil, and cathode connects
Connect the anode of A-battery.
As another for example, the negative relay circuit 4 of the utility model embodiment includes a total negative relay 41,
Always negative relay includes third switch element 411 and tertiary coil 412, and the anode of third switch element connects energy-storage battery group
Cathode, the cathode of cathode connection load, the output end of the anode connection battery management unit of tertiary coil, cathode connect low tension
The anode in pond.
As another for example, the load 6 of the utility model embodiment is electric machine controller 61.The utility model is real
The load for applying example is electric machine controller, and the high pressure precharge of electric vehicle is mainly energy-storage battery group needs pair before high pressure powers on
Bulky capacitor reduces impact electricity into line precharge to reduce spark arcing when inside battery contactor is closed in electric machine controller
Stream, increases the safety of high pressure.
As another for example, the scheduled voltage of the utility model embodiment is the 90% of energy-storage battery group high pressure.
As another for example, the A-battery 8 of the utility model embodiment is 12V lead-acid batteries.
The above is preferred embodiments of the present invention, it is noted that for the ordinary skill of the art
For personnel, under the premise of not departing from principle described in the utility model, it can also make several improvements and retouch, these improvement
The scope of protection of the utility model is also should be regarded as with retouching.
Claims (9)
1. a kind of electronic device with pre-charge circuit, which is characterized in that the pre-charge circuit includes：Energy-storage battery group,
Pre-charge-relay circuit, positive relay circuit, negative relay circuit, battery management unit and load, the precharge after
Appliance circuit is connected in parallel with the positive relay circuit, and one end of the positive relay circuit connects the energy-storage battery group
The output end of Anode and battery administrative unit, the other end connect the anode of the load, and one end of the negative relay circuit connects
The output end of the cathode and battery management unit of the energy-storage battery group is connect, the other end connects the cathode of the load, the electricity
The input terminal of pond administrative unit is connected by CAN bus and the output end of load,
When the energy-storage battery group high pressure powers on, the negative relay circuit and pre-charge-relay circuit sequentially turn on, institute
It states the precharged relay circuit of energy-storage battery group to be pre-charged to the load, while the load is transmitted instead by CAN bus
High-voltage value is presented to the battery management unit, when the feedback high-voltage value reaches scheduled voltage, the pre-charge-relay
Circuit disconnects, and the positive relay circuit conducting, precharge is completed.
2. a kind of electronic device with pre-charge circuit according to claim 1, which is characterized in that the precharge electricity
Road further includes A-battery, the anode of the A-battery be separately connected the battery management unit input terminal and load it is defeated
Outlet.
3. a kind of electronic device with pre-charge circuit according to claim 2, which is characterized in that it is described precharge after
Appliance circuit includes pre-charge resistance and pre-charge-relay, and the pre-charge resistance and pre-charge-relay are connected in series with, institute
It includes first switching element and first coil to state pre-charge-relay, and the anode of the first switching element is through precharge electricity
Resistance connects the anode of the energy-storage battery group, and cathode connects the anode of the load.
4. a kind of electronic device with pre-charge circuit according to claim 3, which is characterized in that the first coil
Anode connect the output end of the battery management unit, cathode connects the anode of the A-battery.
5. a kind of electronic device with pre-charge circuit according to claim 3, which is characterized in that the positive relay
Circuit includes a total positive relay, and total positive relay includes second switch element and the second coil, the second switch member
The anode of part connects the anode of the energy-storage battery group, and cathode connects the cathode of the first switching element, second coil
Anode connect the output end of the battery management unit, cathode connects the anode of the A-battery.
6. a kind of electronic device with pre-charge circuit according to claim 4, which is characterized in that negative relay circuit
Including a total negative relay, the always negative relay includes third switch element and tertiary coil, the third switch element
Anode connects the cathode of the energy-storage battery group, and cathode connects the cathode of the load, the anode connection institute of the tertiary coil
The output end of battery management unit is stated, cathode connects the anode of the A-battery.
7. according to a kind of any electronic devices with pre-charge circuit of claim 1-6, which is characterized in that described negative
It is electric machine controller to carry.
8. according to a kind of any electronic devices with pre-charge circuit of claim 1-6, which is characterized in that described pre-
Constant voltage value is the 90% of energy-storage battery group high pressure.
9. according to a kind of any electronic devices with pre-charge circuit of claim 2-5, which is characterized in that described low
Piezoelectric battery is 12V lead-acid batteries.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721747083.6U CN207801501U (en) | 2017-12-14 | 2017-12-14 | A kind of electronic device with pre-charge circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721747083.6U CN207801501U (en) | 2017-12-14 | 2017-12-14 | A kind of electronic device with pre-charge circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207801501U true CN207801501U (en) | 2018-08-31 |
Family
ID=63283954
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721747083.6U Expired - Fee Related CN207801501U (en) | 2017-12-14 | 2017-12-14 | A kind of electronic device with pre-charge circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207801501U (en) |
-
2017
- 2017-12-14 CN CN201721747083.6U patent/CN207801501U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180831 Termination date: 20191214 |