Electric device, electric driving system and vehicle
By using a clamp in an electrical device to press the electronic device close to or against the heat dissipation assembly, the problem of difficult heat transfer in the prior art is solved, and the effect of simplifying assembly and improving heat dissipation efficiency is achieved.
Patent Information
- Application Number
- CN202421932842.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-09
- Publication Date
- 2025-07-11
- Estimated Expiration
- 2034-08-09
AI Technical Summary
In the prior art, heat transfer between electronic devices and heat dissipation components is not easy to achieve, and the assembly is complicated, making it difficult to meet the heat dissipation needs of electrical devices.
A clamp, including at least three clamping arms, respectively, bring the heating electronics close to or press against the heat dissipation assembly, and provides force toward the heat dissipation assembly through the clamp to achieve good heat transfer. The fixture can include a clamping arm, elastic retaining member, reinforcement rib and other structures to ensure stable connection and buffering.
Effective heat dissipation of multiple heating electronic devices is achieved, the assembly process is simplified, and the heat dissipation efficiency and the stability of the device are improved.
Smart Images
Figure CN223094080U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to an electrical device, an electric drive system and a vehicle, and more specifically, to an electrical device with heat dissipation requirements in an electric drive system, and a vehicle including the above electric drive system. Background Art
[0002] For an electrical device with heat-generating electronic devices, the heat dissipation of the electronic devices is crucial for the performance of the electrical device. For this reason, the electronic devices can be pressed against a heat dissipation component. In the prior art, especially when the electrical device is configured to be placed on a vehicle with, for example, electric or hybrid propulsion, it includes a circuit board and a heat dissipation component. The heat dissipation component is used to dissipate the heat emitted by the electronic devices soldered to the circuit board. The electronic devices are orthogonal to the circuit board and pressed against the heat dissipation component. However, this arrangement makes the assembly more complex. At the same time, it is not easy to achieve good heat transfer between the electronic devices and the heat dissipation component.
[0003] Therefore, it is desirable to propose an electrical device to improve the deficiencies of the above prior art. Summary of the Utility Model
[0004] According to a first aspect of the present utility model, there is provided an electrical device, comprising: a circuit board; at least three electronic devices disposed on a first side of the circuit board; a heat dissipation component in thermal contact with the electronic devices, the electronic devices being located between the circuit board and the heat dissipation component, the heat dissipation component being configured to transfer the heat generated by the electronic devices outward through the heat dissipation component; a fixture disposed on a second side of the circuit board opposite to the first side, the fixture including at least three clamping arms, there being through holes in the circuit board area between the clamping arms and the corresponding electronic devices, and the clamping arms pressing against the corresponding electronic devices towards the heat dissipation component.
[0005] According to the above embodiment of the present disclosure, since the fixture includes at least three clamping arms, for the case where there are three or more heat-generating electronic devices arranged on the electrical device, the corresponding heat-generating electronic devices can be brought close to or even pressed against the heat dissipation component by at least three clamping arms respectively to achieve good heat dissipation performance.
[0006] The electrical device according to the present disclosure may also have one or more of the following features individually or in combination.
[0007] In some embodiments of the present disclosure, the fixture may further include a main body substantially parallel to the circuit board, and the clamping arms extend from one end of the main body.
[0008] In some embodiments of the present disclosure, mounting holes may be provided on the main body.
[0009] According to an embodiment of the present disclosure, the fixture can be fixed to the circuit board through the mounting holes.
[0010] In some embodiments of the present disclosure, a positioning pin may be provided on the main body, and the positioning pin is formed by folding a part of the main body.
[0011] According to the above embodiments of the present disclosure, the fixture can be pre-positioned with the circuit board through the positioning pin and then fixed to the circuit board through the mounting holes.
[0012] In some embodiments of the present disclosure, the main body may have reinforcing ribs. The reinforcing ribs include a transverse portion that extends substantially perpendicular to the clamping arm at the end of the main body, and a longitudinal portion that is substantially perpendicular to the transverse portion and extends from the main body to the clamping arm.
[0013] According to the above embodiments of the present disclosure, the strength of the main body can be improved through the reinforcing ribs. Especially for the fixture of the present utility model, the extension range of its main body is relatively large, so it is necessary to enhance its strength.
[0014] In some embodiments of the present disclosure, an elastic retainer may be provided at the end of the clamping arm of the fixture.
[0015] According to the above embodiments of the present disclosure, the elastic retainer can play a buffering role and reduce the possibility of damage to the electrical device under the impact.
[0016] In some embodiments of the present disclosure, a through hole may be provided on one of the end of the clamping arm and the elastic retainer, and a protrusion cooperating with the through hole may be provided on the other.
[0017] According to the embodiments of the present disclosure, the end of the clamping arm and the elastic retainer can be cooperatively connected together.
[0018] In some embodiments of the present disclosure, the elastic retainer may have a claw to snap the elastic retainer onto the end of the corresponding clamping arm.
[0019] In some embodiments of the present disclosure, the heat dissipation component may include a heat dissipation main body and a thermally conductive insulating sheet, and the thermally conductive insulating sheet is disposed between the heat dissipation main body and the electronic device.
[0020] According to the second aspect of the present utility model, an electric drive system is provided, including the electrical device according to the first aspect of the present utility model.
[0021] According to the third aspect of the present utility model, a vehicle is provided, including the electric drive system according to the second aspect of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] Figure 1 A schematic diagram showing the first side of a circuit board according to an embodiment of the present utility model;
[0023] Figure 2Shows a schematic diagram of the second side of a circuit board according to an embodiment of the present utility model;
[0024] Figure 3 Shows a partial schematic cross-sectional view of an electrical device according to an embodiment of the present utility model;
[0025] Figure 4 Shows Figure 3 a partial enlarged view of;
[0026] Figure 5 Shows a schematic diagram of a fixture according to an embodiment of the present utility model.
[0027] Reference numerals
[0028] 100 Electrical device
[0029] 110 Circuit board
[0030] 122 First electronic device
[0031] 124 Second electronic device
[0032] 126 Third electronic device
[0033] 130 Heat dissipation component
[0034] 140 Fixture
[0035] 141 Body
[0036] 142-1 First clamping arm
[0037] 142-2 Second clamping arm
[0038] 142-3 Third clamping arm
[0039] 143 Mounting hole
[0040] 144 Positioning pin
[0041] 145 Reinforcing rib
[0042] 145-1 Transverse part
[0043] 145-2 Longitudinal part
[0044] 146 Elastic retaining member
[0045] 148 Protrusion
[0046] 149 Claw Detailed implementation manners
[0047] To make the objectives, solutions, and advantages of the technical solution of the present utility model clearer, the following will clearly and completely describe the technical solution of the embodiments of the present utility model with reference to the accompanying drawings of specific embodiments of the present utility model. Unless otherwise specified, the terms used herein have the ordinary meanings in the art. The same reference numerals in the drawings represent the same components.
[0048] Figure 1-2 FIG. 4 shows a schematic diagram of an electrical device 100 according to an embodiment of the present utility model. The electrical device 100 includes a circuit board 110, a first electronic component 122, a second electronic component 124, and a third electronic component 126. The first electronic component 122, the second electronic component 124, and the third electronic component 126 are arranged on a first side (e.g., the lower side as shown) of the circuit board 110. Figure 3 The first electronic component 122, the second electronic component 124, and the third electronic component 126 are heat-generating components, and it is necessary to dissipate the heat generated by them in a timely manner. Therefore, as shown in FIG. Figure 3 5, the electrical device 100 further includes a heat dissipation assembly 130, which is also arranged on the first side of the circuit board 110. The first electronic component 122, the second electronic component 124, and the third electronic component 126 are located between the circuit board 110 and the heat dissipation assembly 130. The heat dissipation assembly 130 is used to cool the first electronic component 122, the second electronic component 124, and the third electronic component 126.
[0049] To achieve a better heat dissipation effect, the first electronic component 122, the second electronic component 124, and the third electronic component 126 should be as close as possible to the heat dissipation assembly 130 or even directly in contact with the heat dissipation assembly 130. For this purpose, a fixture 140 is required to provide a force towards the heat dissipation assembly 130 to the first electronic component 122, the second electronic component 124, and the third electronic component 126. The fixture 140 is arranged on a second side (e.g., the upper side as shown in FIG. Figure 3 6) of the circuit board 110 opposite to the first side. The fixture 140 includes a first clamping arm 142-1, a second clamping arm 142-2, and a third clamping arm 142-3 (hereinafter, for convenience of description, the first clamping arm 142-1, the second clamping arm 142-2, and the third clamping arm 142-3 can be collectively referred to as the clamping arm 142) to respectively provide a force towards the heat dissipation assembly 130 to the first electronic component 122, the second electronic component 124, and the third electronic component 126, so that the first electronic component 122, the second electronic component 124, and the third electronic component 126 are close to or in contact with the heat dissipation assembly 130, thereby achieving a good heat dissipation effect.
[0050] Optionally, the heat dissipation component 130 may include a heat dissipation body and a thermally conductive insulating sheet, and the thermally conductive insulating sheet is disposed between the heat dissipation body and the first electronic device 122, the second electronic device 124, and the third electronic device 126. The heat dissipation body may be, for example, a coolant pipeline extending inside the electrical device 100, and the heat generated by the first electronic device 122, the second electronic device 124, and the third electronic device 126 can be dissipated through the coolant pipeline. The thermally conductive insulating sheet enables the heat dissipation component 130 to dissipate heat while not electrically connecting the first electronic device 122, the second electronic device 124, and the third electronic device 126 to external devices, preventing operational failures or even damage to the electronic devices. The thermally conductive insulating sheet may be a thermally conductive silicone insulating sheet. More specifically, the thermally conductive insulating sheet may be, for example, a TC-2000 high-performance glass fiber thermally conductive insulating sheet.
[0051] Optionally, an elastic holding member 146 may be provided at the end of the clamping arm 142 of the fixture 140. The elastic holding member 146 is located on the second side of the circuit board 110 and fixed to the clamping arm 142. Figure 4 shows Figure 3 a partial enlarged view of the position shown by the dashed circle in. The second clamping arm 142-2 applies a force towards the heat dissipation component 130 to the elastic holding member 146 (e.g., the elastic force generated by the elastic deformation of the second clamping arm 142-2), such that the elastic holding member 146 applies a force towards the heat dissipation component 130 to the second electronic device 124, so that the second electronic device 124 is close to or even in contact with the heat dissipation component 130, thereby cooling the second electronic device 124. For the sake of brevity, only the second electronic device 124 is described above as an example of its specific structure clamped by the fixture 140, but the above description of the second electronic device 124 also applies equally to the first electronic device 122 and the third electronic device 126.
[0052] Optionally, as Figure 5 shown, the elastic holding member 146 may be provided with a protrusion 148, and the end of the clamping arm 142 may be provided with a corresponding through hole (not shown in Figure 5 because it is blocked by the protrusion 148). The protrusion 148 is inserted into the corresponding through hole to fix the elastic holding member 146 to the clamping arm 142. The present utility model is not intended to limit the specific form of fixing the elastic holding member 146 to the clamping arm 142. For example, protrusions may also be provided on the clamping arm 142 and corresponding through holes may be provided on the elastic holding member 146. The elastic holding member 146 can play a buffering role to prevent the clamping effect of the fixture 140 on the first electronic device 122, the second electronic device 124, and the third electronic device 126 from deteriorating when the electrical device 100 is impacted. In addition, the elastic holding member 146 may have two opposite claws 149, and the claws 149 at least partially surround the end of the clamping arm 142 to snap the elastic holding member 146 to the end of the corresponding clamping arm 142.
[0053] Optionally, the fixture 140 may include a main body 141 that is substantially parallel to the circuit board 110, and a first clamping arm 142-1, a second clamping arm 142-2, and a third clamping arm 142-3 respectively extend from one end of the main body 141.
[0054] Optionally, mounting holes 143 may be provided on the main body 141 of the fixture 140, and the fixture 140 is fixed to the circuit board 110 through the mounting holes 143. For example, the fixture 140 may be fixed to the circuit board 110 by screws passing through the threaded holes 143. It should be understood that although Figure 5 two mounting holes 143 are shown, the present invention is not intended to limit the number of the mounting holes 143, and other numbers of mounting holes 143 may also be designed according to specific application requirements.
[0055] Optionally, a positioning pin 144 may be provided on the main body 141 of the fixture 140, and the positioning pin 144 is formed by folding a part of the main body 141. Specifically, the main body 141 is folded away from the circuit board to form a flange, and the positioning pin 144 is formed on the flange. Before installing the fixture 140, the positioning pin 144 may be inserted into the corresponding positioning hole of the circuit board 110 first to ensure that the fixture 140 is in the correct position, and then the fixture 140 is fixed to the circuit board 110 through the mounting holes 143. It should be understood that although Figure 5 two positioning pins 144 are shown, the present invention is not intended to limit the number of the positioning pins 144, and other numbers of positioning pins 144 may also be designed according to specific application requirements.
[0056] Optionally, the main body 141 of the fixture 140 may have a reinforcing rib 145, and the reinforcing rib 145 projects from the main body 141 in a direction perpendicular to the plane where the main body 141 is located, so as to correspondingly increase the thickness of the main body 141 and thus improve the strength of the main body 141. The reinforcing rib 145 includes a transverse portion 145-1 that is substantially perpendicular to the clamping arm 142 at the end of the main body 141 and a longitudinal portion 145-2 that is substantially perpendicular to the transverse portion 145-1 and extends from the main body 141 to the clamping arm 142. By providing the reinforcing rib 145, the strength of the main body 141 can be improved. Especially for the fixture 140 of the present invention, the extension range of its main body 141 is relatively large, so it is more necessary to enhance its strength.
[0057] It should be understood that although three heating electronic devices 122, 124, 126 and three corresponding clamping arms 142-1, 142-2, 142-3 are described above, the number of heating electronic devices of the present invention may also be more than three, and the number of corresponding clamping arms may also be more than three. In addition, although the three heating electronic devices 122, 124, 126 and the three corresponding clamping arms 142-1, 142-2, 142-3 described above are basically arranged in a straight line, the heating electronic devices and the corresponding clamping arms of the present invention may also not be arranged in a straight line, for example, arranged in the form of a triangle.
[0058] The electrical device 100 can be used in the electric drive system of a vehicle. The electrical device 100 can be, for example, a DC-DC converter, which is configured to convert the voltage between a high-voltage (e.g., between 220V and 1500V) power battery and a low-voltage (e.g., between 5V and 50V) power battery. The electrical device 100 can also be, for example, a charger, which is configured to convert the voltage between the power grid outside the vehicle and the power battery of the vehicle. The electrical device 100 can also be an inverter, which is configured to supply power from the power battery to an electric motor for driving the vehicle. The inverter is configured to convert the direct current provided by the power battery into alternating current (e.g., single-phase or three-phase alternating current) for supplying power to the electric motor, and vice versa. The electrical device 100 forming the inverter can be installed in a rotating electric machine including a rotor and a stator. Advantageously, the rotating electric machine can form an alternator, a starter-alternator, a reversible machine, or an electric motor.
[0059] The heating electronic device can be, for example, a diode or a transistor, etc., but the present invention is not intended to limit the specific type of the heating electronic device.
[0060] According to another aspect of the present invention, a vehicle is also provided. The vehicle can include the electrical components, electrical equipment, or electric drive system as described above. The vehicle can be an electrified vehicle, such as a battery electric vehicle (BEV), a hybrid electric vehicle (HEV), a plug-in hybrid electric vehicle (PHEV), a range extended electric vehicle, a fuel cell electric vehicle (FCEV). The vehicle can also be a hydrogen energy vehicle.
[0061] The present invention describes in detail a plurality of exemplary embodiments of the present utility model with reference to preferred embodiments. However, those skilled in the art can understand that without departing from the concept of the present utility model, various modifications and variations can be made to the above specific embodiments, and various technical features and structures proposed by the present utility model can also be combined, without exceeding the protection scope of the present utility model. The protection scope of the present utility model is determined by the appended claims.
Claims
1. An electrical device (100), characterized in that, Comprising: A circuit board (110); At least three electronic devices (122, 124, 126), the electronic devices (122, 124, 126) being disposed on a first side of the circuit board (110); A heat dissipation component (130) in thermal contact with the electronic devices (122, 124, 126), the electronic devices (122, 124, 126) being located between the circuit board (110) and the heat dissipation component (130), the heat dissipation component (130) being configured to transfer heat generated by the electronic devices (122, 124, 126) outward via the heat dissipation component (130); A fixture (140), the fixture (140) being disposed on a second side of the circuit board (110) opposite to the first side, the fixture (140) including at least three clamping arms (142-1, 142-2, 142-3), the circuit board area between the clamping arms (142-1, 142-2, 142-3) and the corresponding electronic devices (122, 124, 126) having through holes, the clamping arms (142-1, 142-2, 142-3) pressing against the corresponding electronic devices (122, 124, 126) toward the heat dissipation component (130).
2. The electrical device (100) according to claim 1, characterized in that, The fixture (140) further includes a main body (141) substantially parallel to the circuit board (110), the clamping arms (142-1, 142-2, 142-3) extending from one end of the main body (141).
3. The electrical device (100) according to claim 2, characterized in that, Mounting holes (143) are provided on the main body (141).
4. The electrical device (100) according to claim 2, characterized in that A positioning pin (144) is provided on the main body (141), the positioning pin (144) being formed by folding a part of the main body (141).
5. The electrical device (100) according to claim 2, characterized in that, The main body (141) has reinforcing ribs (145), the reinforcing ribs (145) including a transverse portion (145-1) extending substantially perpendicular to the clamping arms (142-1, 142-2, 142-3) at the end of the main body (141), and a longitudinal portion (145-2) substantially perpendicular to the transverse portion (145-1) and extending from the main body (141) to the clamping arms (142-1, 142-2, 142-3).
6. The electrical device (100) according to claim 1, characterized in that, Elastic holding members (146) are provided at the ends of the clamping arms (142-1, 142-2, 142-3) of the fixture (140).
7. The electrical device (100) according to claim 6, characterized in that, Through holes are provided on one of the ends of the clamping arms (142-1, 142-2, 142-3) and the elastic holding members (146), and protrusions (148) mating with the through holes are provided on the other.
8. The electrical device (100) according to claim 7, characterized in that, The elastic holding members (146) have clamping claws (149) to snap the elastic holding members (146) onto the ends of the corresponding clamping arms (142-1, 142-2, 142-3).
9. The electrical device (100) according to any one of claims 1 to 8, characterized in that, The heat dissipation component (130) includes a heat dissipation main body and a thermally conductive insulating sheet, the thermally conductive insulating sheet being disposed between the heat dissipation main body and the electronic devices (122, 124, 126).
10. An electric drive system, characterized in that, Including the electrical device (100) according to any one of claims 1 to 9.
11. A vehicle, characterized in that, Comprising the electric drive system according to claim 10.