WO2019062968A1

WO2019062968A1 - Heat sink of charging connector, charging system and vehicle

Info

Publication number: WO2019062968A1
Application number: PCT/CN2018/108802
Authority: WO
Inventors: 邢骁; 徐斌; 刘美忠; 马爱国; 王洪军
Original assignee: 比亚迪股份有限公司
Priority date: 2017-09-30
Filing date: 2018-09-29
Publication date: 2019-04-04
Also published as: TWI684397B; TW201916787A; CN110014948A

Abstract

Provided are a heat sink (10) of a charging connector (5), a charging system (20) and a vehicle (1000). The heat sink (10) of the charging connector (5) comprises: a mounting frame (1); a semiconductor refrigerating sheet (2), the semiconductor refrigerating sheet (2) being fixed on the mounting frame (1); the inner circumferential surface of the semiconductor refrigerating sheet (2) is a refrigerating surface (22) and the outer circumferential surface thereof is a heating surface (23); an air supply member (3), the air supply member (3) being fixed on the mounting frame (1) and arranged opposite the outer face of the heating surface (23).

Description

Radiator, charging system and vehicle for charging connector

Cross-reference to related applications

The present application claims the priority of the Chinese Patent Application No. "201710919598.8", which is filed on Sep. 30, 2017, the disclosure of which is incorporated herein by reference.

Technical field

The present disclosure relates to the field of vehicle technologies, and in particular, to a heat sink, a charging system, and a vehicle of a charging connector.

Background technique

In the related art, the existing semiconductor cooling is mainly used for heat dissipation of electronic components, and is not applied to heat dissipation of an electric vehicle charging port. At present, electric vehicles are developing rapidly, which restricts the two major factors in the development of electric vehicles: cruising range and charging time. On the basis of the equivalent battery capacity and input voltage, in order to obtain a shortened charging time, it is necessary to increase the charging current. However, the larger current means greater temperature rise, and is limited by the narrow space of the charging interface, which may cause the insulation performance of the charging interface insulation material to be lowered at high temperature and the life is reduced, which may affect the charging safety of the electric vehicle.

Summary of the invention

The present disclosure aims to solve at least one of the technical problems in the related art to some extent. To this end, the present disclosure proposes a heat sink for a charging connector that can improve the heat dissipation performance of the charging interface.

The present disclosure further proposes a charging system.

The present disclosure further proposes a vehicle.

A heat sink of a charging connector according to the present disclosure includes: a mounting bracket; a semiconductor refrigerating sheet, the semiconductor refrigerating sheet is fixed on the mounting bracket, an inner circumferential surface of the semiconductor refrigerating sheet is a cooling surface, and an outer peripheral surface is heating a blowing member, the air blowing member is fixed on the mounting bracket and correspondingly disposed outside the heating surface.

According to the heat sink of the charging connector of the present disclosure, the heat dissipation performance of the charging interface can be improved by the cooperation of the mounting bracket, the semiconductor cooling sheet and the air blowing member, and the charging connector can be cooled, thereby avoiding a thermal runaway. A series of safety issues can further improve the charging safety of electric vehicles.

In some examples of the present disclosure, an inner circumference of the semiconductor refrigerating sheet defines a receiving hole for accommodating the charging connector.

In some examples of the present disclosure, the semiconductor refrigerating sheet includes: an arc segment and a straight segment, the arc segment corresponding to a central angle greater than 180°, the straight segment being connected at both ends of the arc segment .

In some examples of the present disclosure, the air blowing member is plural and disposed around the heating surface.

In some examples of the present disclosure, the outer circumference of the mounting bracket is rectangular, the air blowing members are four, and each of the air blowing members is correspondingly mounted on one side of the mounting bracket.

According to the charging system of the present disclosure, an inner circumference of the semiconductor refrigerating sheet defines a receiving hole for accommodating the charging connector, and the charging system includes: a heat sink of the charging connector; a charging connector The charging connector is received in the receiving hole.

In some examples of the present disclosure, the charging system further includes: a controller, a first temperature sensor disposed at the cooling surface, and a second temperature sensor disposed at the heating surface, the controller respectively The first temperature sensor and the second temperature sensor are electrically connected to control an operating state of the semiconductor refrigerating sheet and the air blowing member according to temperature values of the cooling surface and the heating surface.

In some examples of the present disclosure, the controller controls a cooling surface operation of the semiconductor refrigerating sheet when the first temperature sensor detects that a temperature value of the refrigerating surface is greater than a first set value.

In some examples of the present disclosure, the controller controls the blower to operate with the first blower when the second temperature sensor detects that the temperature value of the heating surface is greater than a second set value.

In some examples of the present disclosure, the controller controls the air blower to operate with the second air blower when the second temperature sensor detects that the temperature value of the heating surface is greater than a third set value. The third set value is greater than the second set value, and the wind force of the first air blower is smaller than the wind force of the second air blower.

In some examples of the present disclosure, the controller controls the blower to stop operating when the first temperature sensor detects that the temperature value of the cooling surface is less than a fourth set value.

In some examples of the present disclosure, the controller controls the semiconductor cooling fin to stop operating when the first temperature sensor detects that the temperature value of the cooling surface is less than a fifth set value.

In some examples of the present disclosure, the charging system further includes: a charging state detecting module electrically connected to the controller, the controller detecting that charging is completed or the charging state detecting module The semiconductor cooling fin and the blower are stopped from operating when a charging failure occurs.

In some examples of the present disclosure, the controller detects that the temperature of the cooling surface is greater than a sixth predetermined value or the second temperature sensor detects a temperature of the heating surface when the first temperature sensor detects that the temperature value of the cooling surface is greater than a sixth predetermined value When the value is greater than the seventh predetermined value, the stop charging signal is sent to the vehicle controller of the vehicle.

A vehicle according to the present disclosure includes: the charging system.

DRAWINGS

1 is a schematic diagram of a charging system in accordance with an embodiment of the present disclosure;

2 is a schematic view of a heat sink in accordance with an embodiment of the present disclosure;

3 is an assembled view of a mounting bracket, a semiconductor refrigerating sheet, and a charging connector in accordance with an embodiment of the present disclosure;

4 is an assembled view of a mounting bracket and a semiconductor refrigerating sheet in accordance with an embodiment of the present disclosure;

FIG. 5 is a schematic view of a blower according to an embodiment of the present disclosure; FIG.

6 is a schematic illustration of a charging connector in accordance with an embodiment of the present disclosure;

7 is a charging schematic diagram of a charging system and a heat sink according to an embodiment of the present disclosure;

8 is a flowchart showing the operation of a charging system and a heat sink according to an embodiment of the present disclosure;

9 is a flowchart of failure detection of a charging system and a heat sink according to an embodiment of the present disclosure;

10 is a schematic structural view of a vehicle according to an implementation of the present disclosure.

Reference mark:

Vehicle 1000,

Heat sink 10;

Mounting bracket 1; semiconductor refrigerating sheet 2; receiving hole 21; cooling surface 22; heating surface 23; curved section 24; straight section 25;

Air supply member 3; fixing hole 4; first temperature sensor 41; second temperature sensor 42;

Charging system 20;

Charging connector 5; tail outer wall 51; controller 6; first relay 61; second relay 62.

Detailed ways

Embodiments of the present disclosure are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the drawings are illustrative, and are not intended to be construed as limiting.

The heat sink 10 of the charging connector 5 of the embodiment of the present disclosure will be described in detail below with reference to Figs.

As shown in FIG. 1 to FIG. 6, the heat sink 10 according to the embodiment of the present disclosure includes: a mounting bracket 1, a semiconductor refrigerating sheet 2, and a blower 3, and the semiconductor refrigerating sheet 2 is fixed on the mounting bracket 1, and the mounting bracket 1 can be The semiconductor refrigerating sheet 2 is positionally fixed, and the inner circumference of the semiconductor refrigerating sheet 2 defines a receiving hole 21 for accommodating the charging connecting member 5, and the charging connecting member 5 can be accommodated in the receiving hole 21, and the semiconductor refrigerating sheet 2 The inner peripheral surface is the cooling surface 22 and the outer peripheral surface is the heating surface 23. The charging connector 5 includes a terminal block, which may include a positive terminal and a negative terminal that transmit current. This terminal block is suitable for DC charging port.

Similarly, the charging port of the AC charging port is also in pairs, and may be multiple. The principle is the same as above, and the application can still be implemented.

As shown in Fig. 4, the semiconductor refrigerating sheet 2 may include an arcuate section 24 and a straight section 25, the arcuate section 24 corresponding to a central angle greater than 180, and the straight section 25 being joined at both ends of the arcuate section 24. By using the curved segments 24 and the straight segments 25, the semiconductor refrigerating sheet 2 can be better matched to the charging connector 5, and can at least play a role in pre-installation positioning.

When the semiconductor refrigerating sheet 2 is energized, the refrigerating surface 22 is in a state of being kept at a low temperature, and the refrigerating surface 22 can be thermally transferred to an object in contact with each other, so that the objects in contact with each other can be cooled. After the charging connector 5 is installed in the receiving hole 21, the cooling surface 22 is in contact with the outer wall 51 of the charging interface. When the electric vehicle is charged, the temperature of the cooling surface 22 is low, and the temperature of the outer wall 51 of the charging port is high. The surface 22 can be heat-transferred with the outer wall 51 of the tail portion, and the heat of the charging interface can be absorbed and dissipated, thereby reducing the temperature of the charging interface, thereby improving the heat dissipation performance of the charging interface.

The air supply member 3 is fixedly disposed on the mounting bracket 1, and the air blowing member 3 is disposed on the outer side of the heating surface 23. During the charging process, the heat generated by the charging connector 5 passes through the cooling surface 22 and the heating surface in sequence. 23 is transmitted to the outside of the semiconductor refrigerating sheet 2, when the air blowing member 3 is in operation, the air blowing member 3 can blow the heating surface 23, and the heat dissipation on the heating surface 23 can be accelerated, so that the charging connector 5 can be operated. The heat is quickly dissipated, which in turn cools the charging connector 5. At the same time, it can also avoid the temperature of the electric vehicle during the charging process is too high, so that a series of safety problems caused by thermal runaway can be avoided, and the charging safety of the electric vehicle can be improved.

The manufacturing material inside the tail outer wall 51 of the charging interface uses a metal having good thermal conductivity, such as silver, aluminum, or copper, to better achieve heat transfer. However, the present disclosure is not limited thereto, and the material for manufacturing the tail outer wall 51 of the charging interface may also select a metal that functions in the same manner as silver, aluminum, and copper. In addition, the outer surface of the outer wall 51 of the charging interface is provided with an insulating material, which can ensure a good heat conduction effect at the charging interface, and also does not leak electricity, thereby improving charging safety performance. At the same time, the service life of the charging connector 5 can also be increased.

According to an embodiment of the present disclosure, the air blowing members 3 may be provided in plurality, and a plurality of air blowing members 3 are disposed around the heating surface 23, so that the air blowing area of the air blowing members 3 to the heating surface 23 can be increased. Thereby, the heat generating surface 23 can be better dissipated.

According to an embodiment of the present disclosure, as shown in FIG. 1, the outer circumference of the mounting bracket 1 may be disposed in a rectangular shape, the air blowing members 3 may be disposed in four, and each of the air blowing members 3 is correspondingly mounted on one of the mounting brackets 1. On the side, that is, each side of the mounting bracket 1 is provided with a blowing member 3, so that the air blowing member 3 can blow air to the heating surface 23, thereby speeding up heat dissipation efficiency, and rectangular The structural strength is high, and the structural strength of the heat sink 10 can be improved.

As shown in FIG. 2 and FIG. 5, each side of the mounting bracket 1 is provided with a flange, and each of the air blowing members 3 is provided with a fixing hole 4 corresponding to the flange, and the fixing hole 4 is coupled with the flange, for example, The fastener is fixedly connected to the flange through the fixing hole 4, so that the air blowing member 3 can be mounted on the mounting bracket 1. The structure of the fixing hole 4 and the flange is reliable and stable, and the fixing hole 4 can be well It is mounted on the mounting bracket 1 so that the structural stability of the heat sink 10 can be improved.

According to an embodiment of the present disclosure, as shown in FIG. 1, FIG. 2 and FIG. 5, the air blowing member 3 may be provided as a fan, the rotation speed of the fan is fast, the heat dissipation surface 23 can be quickly dissipated, and the structure of the fan Simple, easy to install and disassemble, and at the same time, the price of the fan is cheap, which can save manufacturing costs.

As shown in FIG. 1, the charging system 20 according to an embodiment of the present disclosure may include a heat sink 10 and a charging connector 5, and the charging connector 5 is mounted in the receiving hole 21, and the heat sink 10 can be connected to the charging during charging. The piece 5 is effectively dissipated, so that the temperature of the charging connector 5 can be lowered, and the safe operation of the charging connector 5 can be ensured.

According to an embodiment of the present disclosure, as shown in FIG. 3 and FIG. 6, the charging system 20 may further include: a controller 6 having a first temperature sensor 41 disposed at the cooling surface 22, and a heating surface 23 provided with a first The temperature sensor 42 is electrically connected to the first temperature sensor 41 and the second temperature sensor 42 respectively, and the first temperature sensor 41 and the second temperature sensor 42 are capable of transmitting the cooling surface 22 to the controller 6. And the temperature information of the heating surface 23, the controller 6 can control the operating states of the semiconductor refrigerating sheet 2 and the blower 3 based on the temperature values of the cooling surface 22 and the heating surface 23.

The controller 6 can adjust the rotation speed of the air blowing member 3 and the temperature of the semiconductor refrigerating sheet 2 according to the temperature values of the cooling surface 22 and the heating surface 23, and the rotation speed of the air blowing member 3 and the temperature of the semiconductor refrigerating sheet 2 only need to meet the working requirements. It is possible to adjust the operating state of the semiconductor refrigerating sheet 2 and the air blowing member 3 at any time, thereby avoiding unnecessary energy waste, and also making the charging system 20 and the heat sink 10 more intelligent.

According to an embodiment of the present disclosure, as shown in FIGS. 6 and 7, the controller 6 may employ a relay to control the operating voltages of the semiconductor refrigerating sheet 2 and the blower 3, and the relay may be provided as the first relay 61 and the second relay 62. When the first temperature sensor 41 detects that the temperature value of the cooling surface 22 is greater than the first set value, the controller 6 pulls down the first relay 61 to supply power to the semiconductor refrigerating sheet 2, so that the cooling surface 22 operates, so that the cooling function can be turned on. .

According to an embodiment of the present disclosure, as shown in FIG. 6 and FIG. 7, when the second temperature sensor 42 detects that the temperature value of the heating surface 23 is greater than the second set value, the controller 6 pulls down the second relay. 62 supplies power to the air supply member 3, and controls the air supply member 3 to operate with the first air supply member, so that the heat dissipation function of the heating surface 23 can be turned on.

According to an embodiment of the present disclosure, as shown in FIGS. 6 and 7, when the second temperature sensor 42 detects that the temperature value of the heating surface 23 is greater than the third set value, the controller 6 controls the blower 3 Working with the second air blower, the third set value is greater than the second set value, the wind force of the first air blower is smaller than the wind force of the second air blower, so that the wind blown by the air blower 3 to the heating surface 23 is increased, thereby The heat dissipation requirement for the heating surface 23 can be ensured, and the temperature of the heating surface 23 can be prevented from being excessively high.

According to an embodiment of the present disclosure, as shown in FIG. 6 and FIG. 7, when the first temperature sensor 41 detects that the temperature value of the cooling surface 22 is less than the fourth set value, the controller 6 turns off the second relay 62, The second relay 62 controls the blower 3 to stop working, and the heat dissipation function of the heating surface 23 is turned off, thereby saving resources. The fourth predetermined value is greater than the first predetermined value, and the fourth predetermined value is less than the second predetermined value and the third predetermined value.

According to an embodiment of the present disclosure, as shown in FIG. 6 and FIG. 7, when the first temperature sensor 41 detects that the temperature value of the cooling surface 22 is less than the fifth set value, the controller 6 turns off the first relay 61, A relay 61 controls the semiconductor refrigerating sheet 2 to stop working, and the cooling function can be turned off, thereby further avoiding waste of energy. The fifth predetermined value is smaller than the first predetermined value, the second predetermined value, the third predetermined value, and the fourth predetermined value.

According to an embodiment of the present disclosure, the charging system 20 may further include: a charging state detecting module electrically connected to the controller 6, and the controller 6 when the charging state detecting module detects the charging completion or the charging failure, the controller 6 The first relay 61 and the second relay 62 are disconnected, and the semiconductor refrigerating sheet 2 and the air blowing member 3 are controlled to stop working, which can improve customer satisfaction.

As shown in FIG. 8, after the semiconductor cooling sheet 2 and the blower 3 are powered normally, when the first temperature sensor 41 detects that the temperature value of the cooling surface 22 is greater than a sixth predetermined value, the controller 6 goes to the vehicle. The controller 6 sends a stop charging signal, stops charging, and records the fault. After the semiconductor cooling sheet 2 and the air blowing member 3 are powered normally, when the second temperature sensor 42 detects that the temperature value of the heating surface 23 is greater than the seventh predetermined value, the controller 6 goes to the vehicle controller 6 of the vehicle. Send a stop charging signal, stop charging, and record the fault. The sixth predetermined value and the seventh predetermined value are both greater than the third predetermined value, and the specific value is set according to actual conditions.

A vehicle according to an embodiment of the present disclosure includes a charging system 20 that can ensure that the vehicle is safe and reliable during charging.

In the description of the present specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" and the like means a specific feature described in connection with the embodiment or example. A structure, material, or feature is included in at least one embodiment or example of the present disclosure. In the present specification, the schematic representation of the above terms is not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. In addition, various embodiments or examples described in the specification and features of various embodiments or examples may be combined and combined without departing from the scope of the invention.

While the embodiments of the present disclosure have been shown and described above, it is understood that the foregoing embodiments are illustrative and are not to be construed as limiting the scope of the disclosure The embodiments are subject to variations, modifications, substitutions and variations.

Claims

A heat sink for charging a connector, comprising:

Mounting brackets;

a semiconductor refrigerating sheet, the semiconductor refrigerating sheet is fixed on the mounting bracket, an inner circumferential surface of the semiconductor refrigerating sheet is a cooling surface, and an outer circumferential surface is a heating surface;

a blower that is fixed to the mounting bracket and correspondingly disposed outside the heating surface.
A heat sink for a charging connector according to claim 1, wherein an inner circumference of said semiconductor cooling sheet defines a receiving hole for accommodating said charging connector.
The heat sink of the charging connector according to claim 1 or 2, wherein the semiconductor refrigerating sheet comprises: an arc segment and a straight segment, wherein the arc segment corresponds to a central angle greater than 180°, Straight segments are connected at both ends of the arc segment.
A heat sink for a charging connector according to any one of claims 1 to 3, wherein the air blowing member is plural and disposed around the heating surface.
The heat sink of the charging connector according to claim 4, wherein the outer circumference of the mounting bracket is rectangular, the air blowing members are four, and each of the air blowing members is correspondingly mounted on the mounting bracket. On one side of the side.
A charging system, comprising:

The heat sink of the charging connector according to any one of claims 1 to 5, wherein an inner circumference of the semiconductor cooling sheet defines a receiving hole for accommodating the charging connector;

A charging connector is received in the receiving hole.
The charging system according to claim 6, further comprising: a controller, wherein the cooling surface is provided with a first temperature sensor and the heating surface is provided with a second temperature sensor, the controller respectively And electrically connecting the first temperature sensor and the second temperature sensor to control an operating state of the semiconductor refrigerating sheet and the air blowing member according to temperature values of the cooling surface and the heating surface.
The charging system according to claim 7, wherein said controller controls cooling of said semiconductor refrigerating sheet when said first temperature sensor detects that said temperature value of said refrigerating surface is greater than a first set value Working face to face.
The charging system according to claim 7 or 8, wherein the controller controls the air supply when the second temperature sensor detects that the temperature value of the heating surface is greater than a second set value The piece works with the first blower.
The charging system according to claim 9, wherein when the second temperature sensor detects that the temperature value of the heating surface is greater than a third set value, the controller controls the air blowing member to The second air blower works, the third set value is greater than the second set value, and the wind force of the first air blower is smaller than the wind force of the second air blower.
The charging system according to any one of claims 8 to 10, wherein the controller controls the control unit when the first temperature sensor detects that the temperature value of the cooling surface is less than a fourth set value The air supply member stops working.
The charging system according to claim 11, wherein said controller controls said semiconductor refrigeration chip to stop operating when said first temperature sensor detects that said temperature value of said cooling surface is less than a fifth set value .
The charging system according to any one of claims 7 to 12, further comprising: a charging state detecting module, wherein the charging state detecting module is electrically connected to the controller, and detecting at the charging state detecting module The controller controls the semiconductor cooling fin and the blower to stop operating until charging is completed or a charging failure occurs.
The charging system according to any one of claims 7 to 12, wherein when the first temperature sensor detects that the temperature value of the cooling surface is greater than a sixth predetermined value or the second temperature sensor detects The controller sends a stop charging signal to the vehicle controller of the vehicle when the temperature value to the heating surface is greater than a seventh predetermined value.
A vehicle, comprising: the charging system according to any one of claims 6-14.