CN210337589U - High-voltage interlocking detection system and pure electric vehicle provided with same - Google Patents
High-voltage interlocking detection system and pure electric vehicle provided with same Download PDFInfo
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- CN210337589U CN210337589U CN201921128636.9U CN201921128636U CN210337589U CN 210337589 U CN210337589 U CN 210337589U CN 201921128636 U CN201921128636 U CN 201921128636U CN 210337589 U CN210337589 U CN 210337589U
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Abstract
The utility model discloses a pure electric vehicle with a high-voltage interlocking detection system installed thereon, which comprises a first relay, a second relay and a plurality of high-voltage interlocking connectors, wherein the first relay and the second relay both comprise a coil and a plurality of contacts; the first relay is electrified through a coil, a normally closed contact in the first relay is controlled to be switched to a normally open contact to be closed, and the normally open contact or the normally closed contact is respectively connected with the coil in the second relay and the high-voltage interlocking connector in series to form a detection branch circuit; whether the detection branch circuit is electrified according to the coil in the relay II controls the normally open contact or the normally closed contact in the relay II to be switched, and detection of the BMS master control high-voltage interlocking fault is achieved. The utility model discloses an add two relays, can realize the accurate detection of high-pressure interlocking in longer return circuit, realize that high-pressure interlocking detects through A + signal and normal electric signal, ON signal of telecommunication respectively, realize that comprehensive, systematization detect the integrality of putting in order car high-pressure electrical connection, improved the fail safe nature of putting in order the car.
Description
Technical Field
The utility model relates to a high pressure interlocking detecting system and install its pure electric vehicles belongs to the electrical system field.
Background
At present, the high-voltage interlocking principle of the new-energy pure electric vehicle is that a BMS main control high-voltage interlocking output pin sends a 5V signal, and the signal enters a BMS main control high-voltage interlocking input pin after passing through a whole vehicle high-voltage interlocking loop. When the whole vehicle high-voltage interlocking loop is long, the signal attenuation is large, and after a BMS main control high-voltage interlocking output pin sends a signal, the BMS main control high-voltage interlocking input pin cannot receive the signal, so that the system has a fault of misrepresentation of high-voltage interlocking, the power-on and charging strategies of the whole vehicle can be misjudged, and the whole vehicle cannot be normally used.
Disclosure of Invention
To the problem that above-mentioned prior art exists, the utility model provides a high pressure interlocking detecting system and install its pure electric vehicles realizes the accurate detection in longer high pressure interlocking return circuit, improves the suitability and the reliability of system.
In order to achieve the above object, the present invention provides a high-voltage interlock detection system, which comprises a first relay, a second relay and a plurality of high-voltage interlock connectors, wherein the first relay and the second relay both comprise a coil and a plurality of contacts;
the first relay is electrified through a coil, a normally closed contact in the first relay is controlled to be switched to a normally open contact to be closed, and the normally open contact or the normally closed contact is respectively connected with the coil in the second relay and the high-voltage interlocking connector in series to form a detection branch circuit;
and the detection branch circuit controls the switching of the normally open contact or the normally closed contact in the relay II according to whether the coil in the relay II is electrified or not, so that the detection of the BMS master control high-voltage interlocking fault is realized.
As an improvement, the first relay comprises a first coil, a first contact, a second contact and a third contact; the relay II comprises a coil II, a contact IV, a contact V and a contact VI;
the first contact and the third contact are connected to form a normally closed contact, and the second contact and the third contact form a normally open contact; and the contact five and the contact six are connected to form a normally closed contact, and the contact four and the contact six form a normally open contact.
As an improvement, one end of the first coil is connected with an A + signal output by the charging gun, and the other end of the first coil is grounded; the first contact is connected with an ON electric signal, the second contact is connected with a normal electric signal, and the third contact is connected with a second coil in the relay;
the other end of the second coil is connected with the high-voltage interlocking connector and then grounded, the fourth contact is connected with the BMS main control high-voltage interlocking input end, and the sixth contact is connected with the BMS main control high-voltage interlocking output end.
As an improvement, the type of the relay I and the relay II is HFV 4/024.
Additionally, the utility model also provides a pure electric vehicles, it installs high pressure interlocking detecting system.
Compared with the prior art, the utility model discloses a reasonable electric principle design has improved high-pressure interlocking detecting system's reliability, can effectively satisfy the longer detection demand in high-pressure interlocking return circuit. The utility model discloses a high-pressure interlocking detecting system can realize comprehensive, the systematization integrality that detects whole car high voltage electrical connection, has improved the security of whole car.
Drawings
FIG. 1 is a schematic view of the structure principle of the present invention;
in the figure: 1. the high-voltage interlocking connector comprises a first relay, 11, a first contact, 12, a second contact, 13, a third contact, 2, a second relay, 21, a fourth contact, 22, a fifth contact, 23, a sixth contact, 3, a high-voltage interlocking connector, 4, a coil connecting end, 5 and a second coil connecting end.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clear, the present invention is further described in detail below. It should be understood, however, that the description herein of specific embodiments is only intended to illustrate the invention and not to limit the scope of the invention.
As shown in fig. 1, a high-voltage interlock detection system comprises a first relay 1, a second relay 2 and a plurality of high-voltage interlock connectors 3, wherein the first relay 1 and the second relay 2 both comprise a coil and a plurality of contacts;
the relay I1 is electrified through a coil, a normally closed contact is switched to a normally open contact in the relay I1 to be closed, and the normally open contact or the normally closed contact is respectively connected with the coil in the relay II 2 and the high-voltage interlocking connector assembly 3 in series to form a detection branch circuit;
and the detection branch circuit controls the switching of the normally open contact or the normally closed contact in the relay II 2 according to whether the coil in the relay II 2 is electrified or not, so that the detection of the BMS master control high-voltage interlocking fault is realized.
As a modification of the embodiment, the relay 1 includes a coil one, a contact 11, a contact 12 and a contact 13; the relay II 2 comprises a coil II, a contact IV 21, a contact V22 and a contact VI 23;
the first contact 11 and the third contact 13 are connected to form a normally closed contact, and the second contact 12 and the third contact 13 form a normally open contact; the contact five 22 and the contact six 23 are connected to form a normally closed contact, and the contact four 21 and the contact six 23 form a normally open contact.
As an improvement of the embodiment, one end of the first coil is connected with an A + signal output by the charging gun, and the other end of the first coil is grounded; the contact I11 is connected with an ON electric signal, the contact II 12 is connected with a normal electric (24V) signal, and the contact III 13 is connected with a coil II in the relay II 2;
the other end of the second coil is connected with the high-voltage interlocking connector 3 and then grounded, the fourth contact 21 is connected with the BMS main control high-voltage interlocking input end, and the sixth contact 23 is connected with the BMS main control high-voltage interlocking output end.
The type of the relay I1 and the type of the relay II 2 are HFV 4/024.
Additionally, the utility model also provides an install high pressure interlocking detecting system's pure electric vehicles.
The high-voltage interlocking detection system is mainly applied to the conditions of upper high voltage and charging:
1) in the case of charging:
when charging, output A + signal on the rifle charges, coil one in the coil one 1 is got electric through coil connecting end 4, contact two 12 and contact three 13 connect the closure, will put the normal signal of telecommunication of whole car end by coil two link 5 insert the coil two in the relay two 2, if the high-pressure interlocking connector 3 of whole car all connects completely this moment, coil two in the relay two 2 gets electric, contact four 21, contact six 23 connect the closure, the signal that the stitch of BMS master control high-pressure interlocking input sent can be received by BMS master control high-pressure interlocking output end stitch, accomplish whole car high-pressure electric high-pressure interlocking and detect. Otherwise, the BMS master controller reports the high-voltage interlocking fault.
2) In the case of high voltage:
when going up the high pressure, the whole car key is beaten the ON shelves, the signal of the ON electricity of output, because relay 1 internal contact 11, contact three 13 is closed, the 24V ON signal of telecommunication is through the coil two in 5 access relays two 2 of link, if the high-pressure interlocking connector 3 of whole car all connects completely this moment, coil two in the relay two 2 gets electricity, contact four 21, contact six 23 connect the closure, the signal that BMS master control high-pressure interlocking input stitch sent can be received by BMS master control high-pressure interlocking output stitch, accomplish whole car high-pressure electric high-voltage interlocking and detect. Otherwise, the BMS master controller reports the high-voltage interlocking fault.
The utility model discloses an add two relays of relay one and relay, can realize the accurate detection of the high-pressure interlocking in longer return circuit, have higher reliability, improved whole car high-pressure system's suitability. This high-voltage interlocking detecting system can distinguish and charge and go up two kinds of conditions of high pressure, realizes high-voltage interlocking through A + signal and ordinary electric signal, ON signal of telecommunication respectively and detects, realizes the integrality of comprehensive, the systematized detection whole car high voltage electrical connection, has improved the fail safe nature of whole car.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modification, equivalent replacement or improvement made within the spirit and principle of the present invention should be included in the present invention.
Claims (5)
1. The high-voltage interlocking detection system is characterized by comprising a first relay (1), a second relay (2) and a plurality of high-voltage interlocking connectors (3), wherein the first relay (1) and the second relay (2) respectively comprise a coil and a plurality of contacts;
the relay I (1) is electrified through a coil, a normally closed contact is switched to a normally open contact in the relay I (1) to be closed, and the normally open contact or the normally closed contact is respectively connected with the coil in the relay II (2) and the high-voltage interlocking connector assembly (3) in series to form a detection branch circuit;
and the detection branch circuit controls the switching of the normally open contact or the normally closed contact in the relay II (2) according to whether the coil in the relay II (2) is electrified or not, so that the detection of the BMS master control high-voltage interlocking fault is realized.
2. A high voltage interlock detection system according to claim 1, wherein said relay one (1) comprises a coil one, a contact one (11), a contact two (12) and a contact three (13); the relay II (2) comprises a coil II, a contact IV (21), a contact V (22) and a contact VI (23);
the contact I (11) and the contact III (13) are connected to form a normally closed contact, and the contact II (12) and the contact III (13) form a normally open contact; and the contact five (22) and the contact six (23) are connected to form a normally closed contact, and the contact four (21) and the contact six (23) form a normally open contact.
3. The high-voltage interlock detection system according to claim 2, wherein one end of the first coil is connected to an a + signal output from the charging gun, and the other end of the first coil is grounded; the contact I (11) is connected with an ON electric signal, the contact II (12) is connected with a normal electric signal, and the contact III (13) is connected with a coil II in the relay II (2);
the other end of the second coil is connected with a high-voltage interlocking connector (3) and then grounded, the fourth contact (21) is connected with a BMS master control high-voltage interlocking input end, and the sixth contact (23) is connected with a BMS master control high-voltage interlocking output end.
4. A high voltage interlock detection system according to any of claims 1 to 3 wherein said first relay (1) and said second relay (2) are of the type HFV 4/024.
5. A pure electric vehicle, characterized in that it is equipped with a high-voltage interlock detection system according to any one of claims 1 to 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921128636.9U CN210337589U (en) | 2019-07-18 | 2019-07-18 | High-voltage interlocking detection system and pure electric vehicle provided with same |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921128636.9U CN210337589U (en) | 2019-07-18 | 2019-07-18 | High-voltage interlocking detection system and pure electric vehicle provided with same |
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| CN210337589U true CN210337589U (en) | 2020-04-17 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021232883A1 (en) * | 2020-05-22 | 2021-11-25 | 宁德时代新能源科技股份有限公司 | High-voltage interlock circuit and detection method therefor |
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2019
- 2019-07-18 CN CN201921128636.9U patent/CN210337589U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021232883A1 (en) * | 2020-05-22 | 2021-11-25 | 宁德时代新能源科技股份有限公司 | High-voltage interlock circuit and detection method therefor |
| US11413965B2 (en) | 2020-05-22 | 2022-08-16 | Contemporary Amperex Technology Co., Limited | High voltage interlock circuit and detection method thereof |
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Effective date of registration: 20211215 Address after: 221000 No.19 Zhujiang East Road, Xuzhou high tech Industrial Development Zone, Jiangsu Province Patentee after: Xuzhou XCMG New Energy Vehicle Co.,Ltd. Address before: 221000 No.19 Zhujiang East Road, Xuzhou high tech Industrial Development Zone, Jiangsu Province Patentee before: XUZHOU XUGONG AUTOMOBILE MANUFACTURING Co.,Ltd. |