CN212555841U - Voltage-dividing type high-voltage contactor system - Google Patents
Voltage-dividing type high-voltage contactor system Download PDFInfo
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- CN212555841U CN212555841U CN202021415991.7U CN202021415991U CN212555841U CN 212555841 U CN212555841 U CN 212555841U CN 202021415991 U CN202021415991 U CN 202021415991U CN 212555841 U CN212555841 U CN 212555841U
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- battery
- voltage
- bms
- battery pack
- switch
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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Abstract
The utility model discloses a voltage-dividing high-voltage contactor system, which comprises at least two battery loops; each of the battery circuits includes a switch, a BMS, and a battery pack, and the switch is connected to the battery pack through the BMS. The utility model discloses a form the group battery with a plurality of battery packages and connect in parallel to by BMS control output voltage, make every group battery independently work, improve security performance and efficiency. When the battery fault is detected, the corresponding direct-current high-voltage contactor can be disconnected according to the fault grade and the fault area, and the battery packs of other groups can still ensure the normal use of the electric vehicle; under the environment of battery maintenance, replacement and the like, the on-off of the corresponding direct current high-voltage contactors is respectively controlled by opening and closing the switches, so that the safety performance of workers can be improved.
Description
Technical Field
The utility model relates to the field of electrical technology, in particular to pressure-dividing type high-voltage contactor system.
Background
With the advancement of society, electric energy has been widely used, for example, in electric aircraft tractors. As the volume of the application object is increased, more electric energy is consumed, and the capacity of a single battery pack is limited, so that a plurality of battery packs are often arranged on the electric aircraft tractor to form a battery pack, and the electric vehicle can be driven to operate.
In the prior art, a plurality of battery packs are generally connected in series, so that the output voltage of the battery pack can be increased. However, as long as one of the battery packs has a problem, the whole battery pack is disconnected for safety so as to prevent high voltage leakage, and therefore, the vehicle cannot continue to run, and the working efficiency and the personal safety are affected.
Disclosure of Invention
To the lower problem of group battery security among the prior art, the utility model provides a partial pressure formula high voltage contactor system through carrying out multiunit battery package and in parallel and by BMS control output voltage to direct current high voltage contactor switch concatenates respectively on every group battery package connecting wire, makes every group battery package independently work, improves security performance and efficiency.
In order to achieve the above object, the present invention provides the following technical solutions:
a voltage division type high voltage contactor system comprises at least two battery loops; each of the battery circuits includes a switch, a BMS, and a battery pack, and the switch is connected to the battery pack through the BMS.
Preferably, the specific connection mode of the battery loop is as follows:
the switch S1 is connected with a first input end of the BMS, a first output end of the BMS is connected with an input end of the first battery pack, and an output end of the first battery pack is connected with a load;
switch S2 is connected to the second input of the BMS, the second output of the BMS is connected to the input of the second battery pack, and the output of the second battery pack is connected to the load.
Preferably, the battery pack comprises at least 2 battery packs connected in series, and a high-voltage direct current contactor is connected between every two adjacent battery packs.
Preferably, the high-voltage direct current contactor is SEV10A24 ANA.
To sum up, owing to adopted above-mentioned technical scheme, compare with prior art, the utility model discloses following beneficial effect has at least:
the utility model discloses a group battery with a plurality of battery package formation is parallelly connected to by BMS control output voltage, make every group battery independently work, improve security performance and efficiency.
And each battery pack is connected with a direct-current high-voltage contactor, when a battery fault is detected, the corresponding direct-current high-voltage contactor can be disconnected according to the fault grade and the fault area, and other battery packs can still ensure the normal use of the electric vehicle; under the environment of battery maintenance, replacement and the like, the on-off of the corresponding direct-current high-voltage contactors is respectively controlled through the on-off switches, so that the safety performance of workers can be improved.
Description of the drawings:
fig. 1 is a schematic diagram of a voltage division type high voltage contactor system according to an exemplary embodiment of the present invention.
Fig. 2 is a schematic diagram of a battery pack structure according to an exemplary embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to examples and specific embodiments. However, it should not be understood that the scope of the above-mentioned subject matter is limited to the following embodiments, and all the technologies realized based on the present invention are within the scope of the present invention.
In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
As shown in fig. 1, the utility model provides a partial pressure formula high voltage contactor system can be applied to electric aircraft tractor, including two at least battery return circuits: each of the battery circuits includes a switch, BMSBATTERY MANAGEMENT SYSTEM), and a battery pack, the switch being connected to the battery pack through a BMS.
In this embodiment, the number of battery packs is at least 2.
In this embodiment, the switch S1 is connected to a first input terminal (I1 port) of the BMS, a first output terminal (O1 port) of the BMS is connected to an input terminal of the first battery pack, and an output terminal of the first battery pack is connected to a load; the switch S2 is connected to a second input terminal (I2 port) of the BMS, a second output terminal (O2 port) of the BMS is connected to an input terminal of the second battery pack, and an output terminal of the second battery pack is connected to a load; switch S1 and switch S2 are both connected to the power bus.
In this embodiment, as shown in fig. 2, each battery pack includes at least 2 (preferably 4) battery packs connected in series, and a high-voltage dc contactor is connected between adjacent battery packs, so that the voltage of a battery can be reduced to about 125V for a single battery, thereby improving safety performance. For example, the first battery pack comprises 2 battery packs connected in series, and a high-voltage direct-current contactor K1 is connected between the battery packs; there are 2 battery packages of establishing ties in the second group battery, and is connected with high voltage direct current contactor K2 between the battery package.
In this embodiment, the high voltage dc contactor may be of the type SEV10a24ANA, NF200A, or the like.
In this embodiment, the system operates as follows:
1. the BMS automatically controls the high-voltage direct-current contactor and the switch to be turned on and off under normal conditions (namely, the battery fault is not detected);
2. when a battery fault is detected, the BMS can disconnect the high-voltage direct-current contactor in the corresponding battery pack according to the fault grade and the fault area, so that the battery pack stops working, and other battery packs continue to supply power to ensure the normal use of the electric vehicle;
3. when the battery is in environments such as maintenance and replacement, the corresponding battery packs can be controlled to be disconnected through the switches S1 and S2, and the safety performance can be improved.
It will be understood by those skilled in the art that the foregoing embodiments are specific examples of the invention, and that various changes in form and details may be made therein without departing from the spirit and scope of the invention in its practical application.
Claims (4)
1. A voltage division high voltage contactor system, comprising at least two battery circuits; each of the battery circuits includes a switch, a BMS, and a battery pack, and the switch is connected to the battery pack through the BMS.
2. The voltage division high voltage contactor system according to claim 1, wherein the battery circuit is connected in a specific manner:
the switch S1 is connected with a first input end of the BMS, a first output end of the BMS is connected with an input end of the first battery pack, and an output end of the first battery pack is connected with a load;
switch S2 is connected to the second input of the BMS, the second output of the BMS is connected to the input of the second battery pack, and the output of the second battery pack is connected to the load.
3. The voltage division high voltage contactor system according to claim 1, wherein said battery pack comprises at least 2 battery packs connected in series, and a high voltage direct current contactor is connected between adjacent battery packs.
4. A voltage division high voltage contactor system according to claim 3, wherein said high voltage dc contactor is of the type SEV10a24 ANA.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021415991.7U CN212555841U (en) | 2020-07-17 | 2020-07-17 | Voltage-dividing type high-voltage contactor system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021415991.7U CN212555841U (en) | 2020-07-17 | 2020-07-17 | Voltage-dividing type high-voltage contactor system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212555841U true CN212555841U (en) | 2021-02-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021415991.7U Active CN212555841U (en) | 2020-07-17 | 2020-07-17 | Voltage-dividing type high-voltage contactor system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212555841U (en) |
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2020
- 2020-07-17 CN CN202021415991.7U patent/CN212555841U/en active Active
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