CN216424094U - High-voltage electrical system of electric automobile - Google Patents
High-voltage electrical system of electric automobile Download PDFInfo
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- CN216424094U CN216424094U CN202122653221.7U CN202122653221U CN216424094U CN 216424094 U CN216424094 U CN 216424094U CN 202122653221 U CN202122653221 U CN 202122653221U CN 216424094 U CN216424094 U CN 216424094U
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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
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- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
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- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/72—Electric energy management in electromobility
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Abstract
The utility model discloses a high-voltage electrical system of an electric automobile, which comprises a battery pack, a motor controller, a three-phase motor, a first high-voltage shielding cable, a second high-voltage shielding cable, a first high-voltage shielding connector, a second high-voltage shielding connector, a third high-voltage shielding connector and a fourth high-voltage shielding connector; the first high-voltage shielding connector is connected with the second high-voltage shielding connector through a first high-voltage shielding cable, and the third high-voltage shielding connector is connected with the fourth high-voltage shielding connector through a second high-voltage shielding cable; the length of the shielding layer in the first high-voltage shielding cable is smaller than the distance between the first high-voltage shielding connector and the second high-voltage shielding connector, and the length of the shielding layer in the second high-voltage shielding cable is smaller than the distance between the third high-voltage shielding connector and the fourth high-voltage shielding connector. The utility model discloses can effectively restrain the induction high frequency current that high frequency pulse current produced at the shielding layer, avoid appearing the thermal ablation problem.
Description
Technical Field
The utility model belongs to the electric automobile field, concretely relates to electric automobile's high-voltage electrical system.
Background
The electric automobile uses a power battery (battery pack) as a power source, and the charge and discharge performance of the electric automobile is directly related to the performance of the electric automobile. The lithium ion battery has the characteristics of high energy density, wide working temperature range and long service life, and is widely applied to power batteries of electric automobiles. However, in a low-temperature environment, the input and output capacities of the lithium ion battery are greatly reduced. In order to improve the performance of the electric automobile at low temperature, a high-voltage electrical system consisting of a battery pack, a motor controller, a three-phase motor, a high-voltage shielding connector and a high-voltage shielding cable for connecting the components can generate high-frequency pulse alternating current, the battery pack is heated by using the internal resistance of the battery, and the aim of quickly heating the battery is fulfilled. When a high-voltage shielding cable connected with a high-voltage shielding connector passes through high-frequency pulse alternating current, a shielding layer (which is a metal layer) of the high-voltage shielding cable generates induced current with the same frequency due to the principle of electromagnetic induction, the induced current generally exceeds the designed maximum value of the shielding layer flowing current, and the problem of thermal ablation of the shielding layer in the high-voltage shielding connector can be caused due to the large overlap resistance between the high-voltage shielding connector and the high-voltage shielding cable.
Disclosure of Invention
The utility model aims at providing an electric automobile's high-voltage electrical system to effectively restrain the induction high frequency current that high frequency pulse current produced at the shielding layer, avoid appearing the thermal ablation problem.
The utility model discloses a high-voltage electrical system of electric automobile, including battery package, first high-voltage shielded connector, first high-voltage shielded cable, second high-voltage shielded connector, motor controller, third high-voltage shielded connector, second high-voltage shielded cable, fourth high-voltage shielded connector and three-phase motor; the battery pack is connected with the first high-voltage shielding connector, one end of the motor controller is connected with the second high-voltage shielding connector, the other end of the motor controller is connected with the third high-voltage shielding connector, the three-phase motor is connected with the fourth high-voltage shielding connector, the first high-voltage shielding connector is connected with the second high-voltage shielding connector through the first high-voltage shielding cable, and the third high-voltage shielding connector is connected with the fourth high-voltage shielding connector through the second high-voltage shielding cable; the length of the shielding layer in the first high-voltage shielding cable is smaller than the distance between the first high-voltage shielding connector and the second high-voltage shielding connector (equivalent to the fact that the shielding layer in the first high-voltage shielding cable is cut away by one section), and the length of the shielding layer in the second high-voltage shielding cable is smaller than the distance between the third high-voltage shielding connector and the fourth high-voltage shielding connector (equivalent to the fact that the shielding layer in the second high-voltage shielding cable is cut away by one section).
Preferably, one end of a shielding layer in the first high-voltage shielding cable is in contact connection with the first high-voltage shielding connector, and a gap of 1 cm-3 cm is formed between the other end of the shielding layer in the first high-voltage shielding cable and the second high-voltage shielding connector; and a gap of 1-3 cm is formed between one end of the shielding layer in the second high-voltage shielding cable and the third high-voltage shielding connector, and the other end of the shielding layer in the second high-voltage shielding cable is in contact connection with the fourth high-voltage shielding connector. The length of the cut shielding layer is 1 cm-3 cm, and the cut parts are positioned at the end part close to the second high-voltage shielding connector and the end part close to the third high-voltage shielding connector, so that the current of the shielding layer is cut off, and simultaneously, most of the length of the first high-voltage shielding cable and the second high-voltage shielding cable is still wrapped by the shielding layer, and the electromagnetic interference shielding function of the shielding layer is kept.
Preferably, one end of a shielding layer in the first high-voltage shielding cable is in contact connection with the first high-voltage shielding connector, and a gap of 1 cm-3 cm is formed between the other end of the shielding layer in the first high-voltage shielding cable and the second high-voltage shielding connector; one end of a shielding layer in the second high-voltage shielding cable is in contact connection with the third high-voltage shielding connector, and a gap of 1 cm-3 cm is formed between the other end of the shielding layer in the second high-voltage shielding cable and the fourth high-voltage shielding connector. The length of the cut shielding layer is 1 cm-3 cm, and the cut parts are arranged at the end part close to the second high-voltage shielding connector and the end part close to the fourth high-voltage shielding connector, so that the current of the shielding layer is cut off, and meanwhile, most of the length of the first high-voltage shielding cable and the second high-voltage shielding cable is still wrapped by the shielding layer, and the electromagnetic interference shielding function of the shielding layer is kept.
Preferably, a gap of 1 cm-3 cm is formed between one end of the shielding layer in the first high-voltage shielding cable and the first high-voltage shielding connector, and the other end of the shielding layer in the first high-voltage shielding cable is in contact connection with the second high-voltage shielding connector; and a gap of 1-3 cm is formed between one end of the shielding layer in the second high-voltage shielding cable and the third high-voltage shielding connector, and the other end of the shielding layer in the second high-voltage shielding cable is in contact connection with the fourth high-voltage shielding connector. The length of the cut shielding layer is 1 cm-3 cm, and the cut parts are positioned at the end part close to the first high-voltage shielding connector and the end part close to the third high-voltage shielding connector, so that the current of the shielding layer is cut off, and simultaneously, most of the length of the first high-voltage shielding cable and the second high-voltage shielding cable is still wrapped by the shielding layer, and the electromagnetic interference shielding function of the shielding layer is kept.
Preferably, a gap of 1 cm-3 cm is formed between one end of the shielding layer in the first high-voltage shielding cable and the first high-voltage shielding connector, and the other end of the shielding layer in the first high-voltage shielding cable is in contact connection with the second high-voltage shielding connector; one end of a shielding layer in the second high-voltage shielding cable is in contact connection with the third high-voltage shielding connector, and a gap of 1 cm-3 cm is formed between the other end of the shielding layer in the second high-voltage shielding cable and the fourth high-voltage shielding connector. The length of the cut shielding layer is 1 cm-3 cm, and the cut parts are positioned at the end part close to the first high-voltage shielding connector and the end part close to the fourth high-voltage shielding connector, so that the current of the shielding layer is cut off, and simultaneously, most of the length of the first high-voltage shielding cable and the second high-voltage shielding cable is still wrapped by the shielding layer, and the electromagnetic interference shielding function of the shielding layer is kept.
Adopt the utility model discloses eliminated the induced-current of shielding layer, avoided because of the relevant problem of ablating of each high-voltage shielded connector that the high-frequency pulse heating function leads to, furthest's shielding layer in first, the second high-voltage shielded cable to electromagnetic interference's shielding effect simultaneously.
Drawings
Fig. 1 is a schematic block diagram of a high-voltage electrical system of an electric vehicle according to embodiment 1.
Detailed Description
Example 1: as shown in fig. 1, the high-voltage electrical system of the electric vehicle in the present embodiment includes a battery pack 1, a first high-voltage shielding connector 2, a first high-voltage shielding cable 3, a second high-voltage shielding connector 4, a motor controller 5, a third high-voltage shielding connector 6, a second high-voltage shielding cable 7, a fourth high-voltage shielding connector 8, and a three-phase motor 9. The battery pack 1 is connected with the first high-voltage shielding connector 2, one end of the motor controller 5 is connected with the second high-voltage shielding connector 4, the other end of the motor controller 5 is connected with the third high-voltage shielding connector 6, the three-phase motor 9 is connected with the fourth high-voltage shielding connector 8, the first high-voltage shielding connector 2 is connected with the second high-voltage shielding connector 4 through the first high-voltage shielding cable 3, and the third high-voltage shielding connector 6 is connected with the fourth high-voltage shielding connector 8 through the second high-voltage shielding cable 7. One end of the shielding layer in the first high-voltage shielding cable 3 is in contact connection with the first high-voltage shielding connector 2, and a gap of 3cm is formed between the other end of the shielding layer in the first high-voltage shielding cable 3 and the second high-voltage shielding connector 4. A gap of 3cm is formed between one end of the shielding layer in the second high-voltage shielding cable 7 and the third high-voltage shielding connector 6, and the other end of the shielding layer in the second high-voltage shielding cable 7 is in contact connection with the fourth high-voltage shielding connector 8.
Example 2: most of the structures of the high-voltage electrical system of the electric vehicle in this embodiment are the same as those in embodiment 1, except that: one end of the shielding layer in the first high-voltage shielding cable 3 is in contact connection with the first high-voltage shielding connector 2, and a gap of 3cm is formed between the other end of the shielding layer in the first high-voltage shielding cable 3 and the second high-voltage shielding connector 4. One end of the shielding layer in the second high-voltage shielding cable 7 is in contact connection with the third high-voltage shielding connector 6, and a gap of 3cm is formed between the other end of the shielding layer in the second high-voltage shielding cable 7 and the fourth high-voltage shielding connector 8.
Example 3: most of the structures of the high-voltage electrical system of the electric vehicle in this embodiment are the same as those in embodiment 1, except that: a gap of 3cm is formed between one end of the shielding layer in the first high-voltage shielding cable 3 and the first high-voltage shielding connector 2, and the other end of the shielding layer in the first high-voltage shielding cable 3 is in contact connection with the second high-voltage shielding connector 4. A gap of 3cm is formed between one end of the shielding layer in the second high-voltage shielding cable 7 and the third high-voltage shielding connector 6, and the other end of the shielding layer in the second high-voltage shielding cable 7 is in contact connection with the fourth high-voltage shielding connector 8.
Example 4: most of the structures of the high-voltage electrical system of the electric vehicle in this embodiment are the same as those in embodiment 1, except that: a gap of 3cm is formed between one end of the shielding layer in the first high-voltage shielding cable 3 and the first high-voltage shielding connector 2, and the other end of the shielding layer in the first high-voltage shielding cable 3 is in contact connection with the second high-voltage shielding connector 4. One end of the shielding layer in the second high-voltage shielding cable 7 is in contact connection with the third high-voltage shielding connector 6, and a gap of 3cm is formed between the other end of the shielding layer in the second high-voltage shielding cable 7 and the fourth high-voltage shielding connector 8.
Claims (5)
1. A high-voltage electrical system of an electric automobile comprises a battery pack (1), a first high-voltage shielding connector (2), a first high-voltage shielding cable (3), a second high-voltage shielding connector (4), a motor controller (5), a third high-voltage shielding connector (6), a second high-voltage shielding cable (7), a fourth high-voltage shielding connector (8) and a three-phase motor (9); the battery pack (1) is connected with the first high-voltage shielding connector (2), one end of the motor controller (5) is connected with the second high-voltage shielding connector (4), the other end of the motor controller is connected with the third high-voltage shielding connector (6), the three-phase motor (9) is connected with the fourth high-voltage shielding connector (8), the first high-voltage shielding connector (2) is connected with the second high-voltage shielding connector (4) through the first high-voltage shielding cable (3), and the third high-voltage shielding connector (6) is connected with the fourth high-voltage shielding connector (8) through the second high-voltage shielding cable (7); the method is characterized in that: the length of the shielding layer in the first high-voltage shielding cable (3) is smaller than the distance between the first high-voltage shielding connector (2) and the second high-voltage shielding connector (4), and the length of the shielding layer in the second high-voltage shielding cable (7) is smaller than the distance between the third high-voltage shielding connector (6) and the fourth high-voltage shielding connector (8).
2. The high-voltage electrical system of an electric vehicle according to claim 1, characterized in that: one end of a shielding layer in the first high-voltage shielding cable (3) is in contact connection with the first high-voltage shielding connector (2), and a gap of 1-3 cm is formed between the other end of the shielding layer in the first high-voltage shielding cable (3) and the second high-voltage shielding connector (4); a gap of 1-3 cm is formed between one end of a shielding layer in the second high-voltage shielding cable (7) and the third high-voltage shielding connector (6), and the other end of the shielding layer in the second high-voltage shielding cable (7) is in contact connection with the fourth high-voltage shielding connector (8).
3. The high-voltage electrical system of an electric vehicle according to claim 1, characterized in that: one end of a shielding layer in the first high-voltage shielding cable (3) is in contact connection with the first high-voltage shielding connector (2), and a gap of 1-3 cm is formed between the other end of the shielding layer in the first high-voltage shielding cable (3) and the second high-voltage shielding connector (4); one end of a shielding layer in the second high-voltage shielding cable (7) is in contact connection with the third high-voltage shielding connector (6), and a gap of 1-3 cm is formed between the other end of the shielding layer in the second high-voltage shielding cable (7) and the fourth high-voltage shielding connector (8).
4. The high-voltage electrical system of an electric vehicle according to claim 1, characterized in that: a gap of 1 cm-3 cm is formed between one end of a shielding layer in the first high-voltage shielding cable (3) and the first high-voltage shielding connector (2), and the other end of the shielding layer in the first high-voltage shielding cable (3) is in contact connection with the second high-voltage shielding connector (4); a gap of 1-3 cm is formed between one end of a shielding layer in the second high-voltage shielding cable (7) and the third high-voltage shielding connector (6), and the other end of the shielding layer in the second high-voltage shielding cable (7) is in contact connection with the fourth high-voltage shielding connector (8).
5. The high-voltage electrical system of an electric vehicle according to claim 1, characterized in that: a gap of 1 cm-3 cm is formed between one end of a shielding layer in the first high-voltage shielding cable (3) and the first high-voltage shielding connector (2), and the other end of the shielding layer in the first high-voltage shielding cable (3) is in contact connection with the second high-voltage shielding connector (4); one end of a shielding layer in the second high-voltage shielding cable (7) is in contact connection with the third high-voltage shielding connector (6), and a gap of 1-3 cm is formed between the other end of the shielding layer in the second high-voltage shielding cable (7) and the fourth high-voltage shielding connector (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122653221.7U CN216424094U (en) | 2021-10-30 | 2021-10-30 | High-voltage electrical system of electric automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122653221.7U CN216424094U (en) | 2021-10-30 | 2021-10-30 | High-voltage electrical system of electric automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216424094U true CN216424094U (en) | 2022-05-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122653221.7U Active CN216424094U (en) | 2021-10-30 | 2021-10-30 | High-voltage electrical system of electric automobile |
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| Country | Link |
|---|---|
| CN (1) | CN216424094U (en) |
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2021
- 2021-10-30 CN CN202122653221.7U patent/CN216424094U/en active Active
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Address after: 401133 room 208, 2 house, 39 Yonghe Road, Yu Zui Town, Jiangbei District, Chongqing Patentee after: Deep Blue Automotive Technology Co.,Ltd. Address before: 401133 room 208, 2 house, 39 Yonghe Road, Yu Zui Town, Jiangbei District, Chongqing Patentee before: CHONGQING CHANGAN NEW ENERGY AUTOMOBILE TECHNOLOGY Co.,Ltd. |
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