CN216389523U - BDU heat radiation structure of automobile battery pack - Google Patents
BDU heat radiation structure of automobile battery pack Download PDFInfo
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- CN216389523U CN216389523U CN202123209042.0U CN202123209042U CN216389523U CN 216389523 U CN216389523 U CN 216389523U CN 202123209042 U CN202123209042 U CN 202123209042U CN 216389523 U CN216389523 U CN 216389523U
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- bdu
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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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Abstract
The utility model provides a BDU heat dissipation structure of an automobile battery pack, and particularly relates to the technical field of electric vehicles, which comprises the following components: overflowing the row and the heat dissipation box, overflow the row with the inside components and parts of BDU are connected, the heat dissipation box is installed overflow on the upper surface of row, be equipped with the radiating groove in the heat dissipation box, be equipped with a plurality of radiating fin in the radiating groove, the radiating medium is equipped with in the radiating groove, the radiating groove outside be equipped with a plurality of louvres on the heat dissipation box. The heat dissipation box is used for absorbing the heat transferred by the overflowing row, the heat dissipation medium is light in weight compared with a copper bar, more heat can be absorbed, the heat dissipation capacity of the BDU can be effectively improved, the heat dissipation requirement of the BDU under severe working conditions is met, the safety of the BDU is guaranteed, and the service life of the BDU is prolonged.
Description
Technical Field
The utility model relates to the technical field of electric vehicles, in particular to a BDU heat dissipation structure of an automobile battery pack.
Background
The Battery Disconnection Unit (BDU) is a device for disconnecting and connecting high-voltage power batteries of the new energy automobile, is located inside a Battery pack, is a working Unit for high-voltage distribution, disconnection and short-circuit protection of a Battery system, plays a vital role in the safety of the Battery pack, and is a more key part on the new energy automobile. The BDU integrates components such as a relay, a pre-charging resistor, a current sensor, a fuse, a high-voltage copper bar, a low-voltage connector, a high-voltage sampling connector and a wiring harness assembly, the service life and the safety of the BDU directly influence the service life and the safety of a battery pack, and therefore the safety and the performance of a new energy automobile are influenced.
With the rapid development of new energy vehicles, the use experience of users is directly influenced by the speed of charging, most of the new energy vehicles sold at the present stage can charge the battery to 80% SOC (state of charge) within 30 minutes, in the rapid charging process, a high-voltage part inside the battery needs to bear very large current, a part through which large current passes can generate a large amount of electrothermal reaction, and especially high-voltage electric connection, a relay and a fuse inside a BDU (brain-based data unit) have relatively large internal resistance and generate very large heat. At present BDU's heat dissipation mainly relies on the copper bar to dispel the heat, promptly at the relay, install the heat dissipation copper bar additional on components and parts such as fuse, can satisfy the heat dissipation demand under the normal charge-discharge operating mode, but fill soon, under heavy current operating modes such as continuous acceleration and deceleration, the relay, the temperature of components and parts such as fuse can sharply rise, because the heat-sinking capability of copper bar is limited, whole BDU's temperature also can consequently sharply rise, influence BDU's life and safety, and be subject to the copper bar technology, cost, spatial arrangement, electric safety distance, requirements such as lightweight, the heat-sinking capability of copper bar has can't be promoted.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a BDU heat dissipation structure of an automobile battery pack, which can improve the heat dissipation capability of the BDU, ensure the safety of the BDU and prolong the service life of the BDU.
To achieve the above and other related objects, the present invention provides a BDU heat dissipation structure for a vehicle battery pack, including:
the overcurrent bar is connected with the components inside the BDU;
the heat dissipation box is installed on the upper surface of the overflowing row, a heat dissipation groove is formed in the heat dissipation box, a plurality of radiating fins are arranged in the heat dissipation groove, a radiating medium is arranged in the heat dissipation groove, and a plurality of radiating holes are formed in the heat dissipation box and outside the heat dissipation groove.
In an example of the BDU heat dissipation structure of the automobile battery pack according to the present invention, the heat dissipation box includes a housing, a heat dissipation groove, and a cover plate, the bottom of the housing is connected to the overflow row, the heat dissipation groove is disposed in the housing, an opening of the heat dissipation groove faces upward, the cover plate is installed at the opening of the heat dissipation groove, and the cover plate is matched with the opening of the heat dissipation groove.
In an example of the BDU heat dissipation structure of the automobile battery pack according to the present invention, the cover plate is hermetically connected to the heat dissipation groove.
In an example of the BDU heat dissipation structure of the vehicle battery pack according to the present invention, the bottom of the housing is provided with a flow bar fixing groove, and the flow bar is installed in the flow bar fixing groove.
In an example of the BDU heat dissipation structure of the vehicle battery pack according to the present invention, the width of the over-current bar fixing groove is equal to the width of the over-current bar, and the depth of the over-current bar fixing groove is equal to the thickness of the over-current bar.
In an example of the BDU heat dissipation structure of the automobile battery pack according to the present invention, a connection portion between the overflow row and the overflow row fixing groove is coated with a heat conductive structure adhesive.
In an example of the BDU heat dissipation structure of the vehicle battery pack according to the present invention, the width of the heat dissipation groove is equal to the width of the overflow bar.
In an example of the BDU heat dissipation structure of the vehicle battery pack according to the present invention, the heat dissipation fins are uniformly distributed on the bottom surface of the heat dissipation groove, and the height of the heat dissipation fins is greater than or equal to 0.5 times the height of the heat dissipation groove and less than or equal to 0.75 times the height of the heat dissipation groove.
In an example of the BDU heat dissipation structure of the automobile battery pack according to the present invention, the heat dissipation fins are straight teeth, cylinders, twill, or honeycombs.
In an example of the BDU heat dissipation structure of the automobile battery pack according to the present invention, the heat dissipation medium is a phase change material or a high specific heat capacity material.
In an example of the BDU heat dissipation structure of the automobile battery pack according to the present invention, the enthalpy of phase change material is greater than or equal to 140J/g.
In an example of the BDU heat dissipation structure of the automobile battery pack according to the present invention, the specific heat capacity of the high specific heat capacity material is greater than or equal to 1.2J/(g · K).
In an example of the BDU heat dissipation structure of the vehicle battery pack according to the present invention, the heat dissipation box is made of a thermally conductive and insulating plastic material.
In an example of the BDU heat dissipation structure of the automobile battery pack according to the present invention, the thermal conductivity of the thermally conductive and insulating plastic material is greater than or equal to 0.8W/(m · K), and the specific heat capacity thereof is greater than or equal to 1.2J/(g · K).
In an example of the BDU heat dissipation structure of the vehicle battery pack according to the present invention, the heat dissipation hole is vertical, and the heat dissipation hole is a hole penetrating through upper and lower surfaces of the heat dissipation box, and is connected to an outer surface of the heat dissipation groove.
In an example of the BDU heat dissipation structure of the automobile battery pack, the overcurrent bar is a copper bar or an aluminum bar, the overcurrent bar is provided with a bolt hole, and the overcurrent bar is connected with components inside the BDU through bolts.
The BDU heat dissipation structure of the automobile battery pack absorbs heat transferred by the over-current bars by using the heat dissipation box, and the heat dissipation medium is light in weight compared with a copper bar and can absorb more heat, so that the heat dissipation capacity of the BDU can be effectively improved, the heat dissipation requirement of the BDU under severe working conditions can be met, the safety of the BDU can be ensured, and the service life of the BDU can be prolonged.
Drawings
Fig. 1 is a schematic structural diagram of a BDU heat dissipation structure of an automotive battery pack according to the present invention;
fig. 2 is a sectional view of a BDU heat dissipation structure of an automotive battery pack according to the present invention.
Element number description:
100 flow-through bar
110 bolt hole
200 heat radiation box
210 outer casing
211 heat dissipation hole
212 flow row fixing groove
220 heat sink
221 radiating fin
222 heat dissipation medium
230 cover plate
300 Relay
Detailed Description
The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The utility model is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict. It is also to be understood that the terminology used in the examples is for the purpose of describing particular embodiments only, and is not intended to limit the scope of the present invention. Test methods in which specific conditions are not specified in the following examples are generally carried out under conventional conditions or under conditions recommended by the respective manufacturers.
When numerical ranges are given in the examples, it is understood that both endpoints of each of the numerical ranges and any value therebetween can be selected unless the utility model otherwise indicated. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs and the description of the present invention, and any methods, apparatuses, and materials similar or equivalent to those in the embodiments of the present invention may be used to practice the present invention.
Referring to fig. 1 and 2, fig. 1 is a schematic structural diagram of a BDU heat dissipation structure of an automobile battery pack according to the present invention, and fig. 2 is a cross-sectional view of the BDU heat dissipation structure of the automobile battery pack according to the present invention. The utility model provides a BDU heat radiation structure of an automobile battery pack, which comprises: overcurrent row 100 and heat dissipation box 200, overcurrent row 100 with the inside components and parts of BDU are connected, heat dissipation box 200 is installed on the upper surface of overcurrent row 100, be equipped with radiating groove 220 in the heat dissipation box 200, be equipped with a plurality of radiating fin 221 in the radiating groove 220, heat dissipation medium 222 is equipped with in the radiating groove 220, the radiating groove 220 outside be equipped with a plurality of louvres 211 on the heat dissipation box 200.
As shown in fig. 1, the overcurrent bar 100 is installed on the relay 300 inside the BDU, and can absorb heat generated by the relay 300, the heat dissipation box 200 is disposed on the overcurrent bar 100 and is used for absorbing heat transmitted by the overcurrent bar 100, and the heat dissipation box 200 rapidly transmits the absorbed heat to the heat dissipation medium 222 through the heat dissipation fins 221. Of course, the current bar 100 may also be mounted on other components inside the BDU to enhance the heat dissipation capability of the BDU.
Referring to fig. 1 and 2, in an example of the heat dissipation structure of the BDU for the vehicle battery pack according to the present invention, the heat dissipation box 200 includes a housing 210, a heat dissipation groove 220, and a cover plate 230, wherein the bottom of the housing 210 is connected to the overflow row 100, the heat dissipation groove 220 is disposed in the housing 210, an opening of the heat dissipation groove 220 is upward, the cover plate 230 is installed at an opening of the heat dissipation groove 220, and the cover plate 230 is matched with the opening of the heat dissipation groove 220. The cover plate 230 is hermetically connected with the heat sink 220. The cover plate 230 is hermetically connected to the heat sink 220 to prevent the heat dissipation medium 222 from flowing out and contaminating or damaging components inside the BDU.
Referring to fig. 1, in an example of the heat dissipation structure of the BDU for the vehicle battery pack according to the present invention, the bottom of the housing 210 is provided with a flow bar fixing groove 212, and the flow bar 100 is installed in the flow bar fixing groove 212. The width of the flow-passing bar fixing groove 212 is equal to the width of the flow-passing bar 100, and the depth of the flow-passing bar fixing groove 212 is equal to the thickness of the flow-passing bar 100. The flow-passing bar fixing slots 212 can more stably fix the housing 210 on the flow-passing bar 100.
In an example of the BDU heat dissipation structure of the automobile battery pack according to the present invention, a heat conductive adhesive is coated at a connection portion between the flow bar 100 and the flow bar fixing groove 212. The heat conducting structural adhesive can stably adhere the housing 210 to the flow-passing bar 100, and can reduce the thermal resistance between the flow-passing bar 100 and the housing 210, so that the heat transfer is faster.
In an example of the heat dissipation structure of the BDU for the vehicle battery pack according to the present invention, the width of the heat dissipation groove 220 is equal to the width of the overflow drain 100. The length of the heat sink 220 can be set according to the length of the housing 210, and the larger the volume of the heat sink 220 is, the more heat dissipation media are loaded in the heat sink 220, and the better the heat dissipation effect is.
Referring to fig. 2, in an example of the heat dissipation structure of the BDU for the vehicle battery pack according to the present invention, the heat dissipation fins 221 are uniformly distributed on the bottom surface of the heat dissipation groove 220, and the height of the heat dissipation fins 221 is greater than or equal to 0.5 times the height of the heat dissipation groove 220 and less than or equal to 0.75 times the height of the heat dissipation groove 220. The heat dissipation fins 221 are straight teeth, cylindrical, twill or honeycomb. The heat dissipation fins 221 can rapidly transfer the heat absorbed by the heat dissipation grooves 220 to the heat dissipation medium 222, thereby enhancing the heat dissipation capability of the BDU.
In an example of the BDU heat dissipation structure of the automobile battery pack according to the present invention, the heat dissipation medium 222 is a phase change material or a high specific heat capacity material. The phase change enthalpy value of the phase change material is greater than or equal to 140J/g. The high specific heat capacity material has a specific heat capacity greater than or equal to 1.2J/(g.K). The density of the heat dissipation medium 222 is much lower than that of copper, the heat dissipation medium 222 with the same volume is lighter in weight and can absorb more heat, the heat dissipation capacity of the BDU can be improved as much as possible on the premise of light weight, and the cost is lower.
In an example of the BDU heat dissipation structure of the vehicle battery pack according to the present invention, the heat dissipation case 200 is made of a thermally conductive and insulating plastic material. The heat conductivity coefficient of the heat-conducting insulating plastic material is greater than or equal to 0.8W/(m.K), and the specific heat capacity of the heat-conducting insulating plastic material is greater than or equal to 1.2J/(g.K). The heat dissipation box 200 is made of the heat conduction and insulation plastic material, so that heat can be well conducted, the heat dissipation box 200 has insulation performance, the installation design of the heat dissipation box 200 is more flexible, the heat dissipation box is not limited by a copper bar process, and the requirement of electrical safety can be met more easily.
Referring to fig. 1, in an example of the BDU heat dissipation structure of the vehicle battery pack according to the present invention, the heat dissipation hole 211 is a hole penetrating through the upper and lower surfaces of the heat dissipation box 200, and the heat dissipation hole 211 is connected to the outer surface of the heat dissipation groove 220. The heat dissipation hole 211 can effectively increase the heat dissipation area of the heat dissipation box 200, and is advantageous to the flow of air, increasing the heat dissipation rate of the heat dissipation box 200.
Referring to fig. 1, in an example of the heat dissipation structure of the BDU of the automobile battery pack according to the present invention, the over-current bar 100 is a copper bar or an aluminum bar, the over-current bar 100 is provided with bolt holes 110, and the over-current bar 100 is connected to components inside the BDU through bolts.
The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the utility model. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (10)
1. The utility model provides an automobile battery package BDU heat radiation structure which characterized in that includes:
the overcurrent bar is connected with the components inside the BDU;
the heat dissipation box is installed on the upper surface of the overflowing row, a heat dissipation groove is formed in the heat dissipation box, a plurality of radiating fins are arranged in the heat dissipation groove, a radiating medium is arranged in the heat dissipation groove, and a plurality of radiating holes are formed in the heat dissipation box and outside the heat dissipation groove.
2. The BDU heat dissipation structure of automobile battery pack as claimed in claim 1, wherein the heat dissipation box comprises a housing, a heat dissipation groove and a cover plate, the bottom of the housing is connected with the overflow row, the heat dissipation groove is arranged in the housing, the opening of the heat dissipation groove faces upwards, the cover plate is arranged at the opening of the heat dissipation groove, and the cover plate is matched with the opening of the heat dissipation groove.
3. The BDU heat dissipation structure for vehicle battery packs as claimed in claim 2, wherein the cover plate is hermetically connected to the heat dissipation groove.
4. The BDU heat dissipation structure for vehicle battery pack according to claim 2, wherein the bottom of the housing is formed with a flow bar fixing groove, the flow bar is installed in the flow bar fixing groove, and the width of the heat dissipation groove is equal to the width of the flow bar.
5. The BDU heat dissipation structure of an automobile battery pack is characterized in that the joint of the overflowing row and the overflowing row fixing groove is coated with heat conduction structural adhesive.
6. The BDU heat dissipation structure for vehicle battery packs as claimed in claim 1, wherein the heat dissipation fins are uniformly distributed on the bottom surface of the heat dissipation groove.
7. The BDU heat dissipation structure of automobile battery pack as claimed in claim 1, wherein the heat dissipation medium is a phase change material or a high specific heat capacity material, the enthalpy of phase change of the phase change material is greater than or equal to 140J/g, and the specific heat capacity of the high specific heat capacity material is greater than or equal to 1.2J/(g-K).
8. The BDU heat dissipation structure of an automobile battery pack according to claim 1, wherein the heat dissipation box is made of a heat conductive and insulating plastic material, the heat conductivity of the heat conductive and insulating plastic material is greater than or equal to 0.8W/(m-K), and the specific heat capacity of the heat conductive and insulating material is greater than or equal to 1.2J/(g-K).
9. The BDU heat dissipation structure of vehicle battery pack as claimed in claim 1, wherein the heat dissipation holes are holes penetrating the upper and lower surfaces of the heat dissipation box, and the heat dissipation holes are connected to the outer surface of the heat dissipation groove.
10. The BDU heat dissipation structure of automobile battery pack is characterized in that the overflow row is a copper row or an aluminum row, bolt holes are formed in the overflow row, and the overflow row is connected with components inside the BDU through bolts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123209042.0U CN216389523U (en) | 2021-12-20 | 2021-12-20 | BDU heat radiation structure of automobile battery pack |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123209042.0U CN216389523U (en) | 2021-12-20 | 2021-12-20 | BDU heat radiation structure of automobile battery pack |
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| CN216389523U true CN216389523U (en) | 2022-04-26 |
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| CN202123209042.0U Active CN216389523U (en) | 2021-12-20 | 2021-12-20 | BDU heat radiation structure of automobile battery pack |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115734589A (en) * | 2022-12-02 | 2023-03-03 | 武汉嘉晨电子技术有限公司 | BDU heat radiation structure |
| CN115996552A (en) * | 2023-03-22 | 2023-04-21 | 武汉嘉晨电子技术有限公司 | Automobile BDU heat dissipation structure and manufacturing method thereof |
-
2021
- 2021-12-20 CN CN202123209042.0U patent/CN216389523U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115734589A (en) * | 2022-12-02 | 2023-03-03 | 武汉嘉晨电子技术有限公司 | BDU heat radiation structure |
| CN115734589B (en) * | 2022-12-02 | 2023-11-14 | 武汉嘉晨电子技术有限公司 | BDU heat radiation structure |
| CN115996552A (en) * | 2023-03-22 | 2023-04-21 | 武汉嘉晨电子技术有限公司 | Automobile BDU heat dissipation structure and manufacturing method thereof |
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