CN115243531A - Liquid cooling BDU structure and vehicle - Google Patents
Liquid cooling BDU structure and vehicle Download PDFInfo
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- CN115243531A CN115243531A CN202211047870.5A CN202211047870A CN115243531A CN 115243531 A CN115243531 A CN 115243531A CN 202211047870 A CN202211047870 A CN 202211047870A CN 115243531 A CN115243531 A CN 115243531A
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- 238000001816 cooling Methods 0.000 title claims abstract description 62
- 239000007788 liquid Substances 0.000 title claims abstract description 58
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 149
- 229910052802 copper Inorganic materials 0.000 claims abstract description 149
- 239000010949 copper Substances 0.000 claims abstract description 149
- 230000007246 mechanism Effects 0.000 claims abstract description 68
- 238000001514 detection method Methods 0.000 claims description 24
- 239000012212 insulator Substances 0.000 claims 2
- 230000005540 biological transmission Effects 0.000 abstract description 3
- 238000009413 insulation Methods 0.000 description 13
- 238000000034 method Methods 0.000 description 13
- 230000000694 effects Effects 0.000 description 12
- 230000008569 process Effects 0.000 description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 230000017525 heat dissipation Effects 0.000 description 5
- 239000000243 solution Substances 0.000 description 5
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 4
- 230000009194 climbing Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000004088 simulation Methods 0.000 description 3
- 239000002826 coolant Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
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- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
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- 239000003063 flame retardant Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 208000010125 myocardial infarction Diseases 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/20218—Modifications to facilitate cooling, ventilating, or heating using a liquid coolant without phase change in electronic enclosures
- H05K7/20254—Cold plates transferring heat from heat source to coolant
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
- B60L3/04—Cutting off the power supply under fault conditions
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R25/00—Coupling parts adapted for simultaneous co-operation with two or more identical counterparts, e.g. for distributing energy to two or more circuits
- H01R25/16—Rails or bus-bars provided with a plurality of discrete connecting locations for counterparts
- H01R25/161—Details
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/2039—Modifications to facilitate cooling, ventilating, or heating characterised by the heat transfer by conduction from the heat generating element to a dissipating body
- H05K7/20509—Multiple-component heat spreaders; Multi-component heat-conducting support plates; Multi-component non-closed heat-conducting structures
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The application provides a liquid cooling BDU structure and vehicle relates to power battery technical field. The liquid-cooled BDU structure includes: the BDU mechanism is provided with a copper bar assembly, the copper bar assembly 11 is provided with a first connecting end and a second connecting end, and the second connecting end is configured to be a negative electrode output end and/or a positive electrode output end; and the liquid cooling mechanism is arranged on one side of the BDU mechanism and is in insulated contact with the first connecting end so as to cool the copper bar assembly. The BDU mechanism has the copper bar subassembly, and the first link of copper bar subassembly carries out insulating contact with liquid cooling mechanism, can provide even, high heat capacity's heat transmission route for the copper bar subassembly, can reduce the temperature of copper bar subassembly effectively, increases the same ability of overflowing of copper bar subassembly under the cross-sectional area that overflows.
Description
Technical Field
The application relates to the technical field of power batteries, in particular to a liquid cooling BDU structure and a vehicle.
Background
With the continuous development of science and technology, people have higher and higher requirements on life quality, new energy automobiles with the advantages of energy conservation and emission reduction are paid more and more attention in recent years, and electric automobiles have higher requirements on safety as a great main force in the new energy automobiles.
A Battery pack disconnection Unit (Battery disconnection Unit) is called a BDU Unit for short, and plays an important role as a distribution box specially designed for an electric automobile power Battery, and can cut off internal current to ensure the safety of the system when the power Battery system in the electric automobile reports errors. The BDU unit mainly includes several relays, connector sensors, and a housing.
In the related technology, the existing BDU structure mainly adopts air cooling for heat dissipation, the structure is limited by the structural layout and the air cooling heat dissipation mode, the overcurrent capacity of a copper bar is also influenced, the temperature control performance is poor, and if the BDU structure meets the superposition working conditions of high-speed climbing, high-power quick charging and the like, the temperature rise is very fast, so that the dynamic performance and the endurance mileage of the whole vehicle are influenced.
Disclosure of Invention
An object of this application provides a liquid cooling BDU structure and vehicle can carry out accurate control to the copper bar temperature, improves its ability of overflowing.
In order to achieve the purpose, the following technical scheme is adopted in the application:
in a first aspect, the present application provides a liquid-cooled BDU structure, comprising: a BDU mechanism having a copper bar assembly with a first connection end and a second connection end configured as a negative output end and/or a positive output end; and the liquid cooling mechanism is arranged on one side of the BDU mechanism and is in insulated contact with the first connecting end so as to cool the copper bar assembly.
In the in-process of above-mentioned realization, BDU mechanism has the copper bar subassembly, and the first link of copper bar subassembly carries out insulating contact with liquid cooling mechanism, can provide even, high heat capacity's heat transmission route for the copper bar subassembly, can reduce the temperature of copper bar subassembly effectively, increases the same overcurrent capacity who overflows the sectional area under the copper bar subassembly.
In some embodiments, the liquid-cooled BDU structure further includes a thermal pad disposed between the first connection end and the liquid-cooled mechanism. Can form insulating between liquid cooling mechanism and the copper bar subassembly, when avoiding the phenomenon such as short circuit to appear in the liquid cooling BDU structure, also can pass to the liquid cooling mechanism with the heat of copper bar subassembly, reduce the temperature of copper bar subassembly tie point, improve the ability of overflowing, also can realize reduce cost's purpose simultaneously.
In some embodiments, the liquid-cooled BDU structure further includes an insulating film connected to the first connection end, the insulating film in contact with the thermal pad. Can wrap up the first link of copper bar subassembly, realize the insulation to the copper bar subassembly, improve the security performance of product.
In some embodiments, the copper bar assembly includes a first copper bar member, the first copper bar member is connected with a main positive relay, one end of the first copper bar member is connected with the liquid cooling mechanism in an insulating manner, and the other end of the first copper bar member is used for forming a total positive external total output end and a positive current detection end.
In the realization process of above-mentioned realization, first copper bar spare carries out insulating connection with liquid cooling mechanism for when connecting the main positive relay on the first copper bar spare, can effectively reduce the junction department temperature on the first copper bar spare, improve the ability of overflowing, ensure that liquid cooling BDU structure work realizes driving safety's effect in reasonable temperature range.
In some embodiments, the liquid-cooled BDU structure further comprises a positive current detection sensor connected to the positive current detection terminal. Be connected with the positive current sense terminal through positive current detection sensor, can detect the electric current of first copper bar spare, guarantee the work security of first copper bar spare.
In some embodiments, the copper bar assembly further comprises a second copper bar, one end of the second copper bar is configured as a positive total output end, the other end of the second copper bar is connected with a fuse, the fuse is connected with the positive current detection end, and the second copper bar is in insulated contact with the liquid cooling mechanism.
At the in-process of above-mentioned realization, second copper bar spare carries out insulating connection with liquid cooling mechanism for when connecting the fuse on the first copper bar spare, can effectively reduce the junction point department temperature on the second copper bar spare, improve the ability of overflowing, ensure that liquid cooling BDU structure work realizes driving safety's effect at reasonable temperature range.
In some embodiments, the copper bar assembly further comprises a third copper bar piece, the third copper bar piece is respectively connected with the quick charge high-voltage relay and the positive current detection end, at least one part of the third copper bar piece is used for forming a quick charge positive output end, and the third copper bar piece is in insulation contact with the liquid cooling mechanism.
At the in-process of above-mentioned realization, third copper bar spare and liquid cooling mechanism carry out insulating connection for when connecting on the first copper bar spare and fill high voltage relay soon, can effectively reduce the junction point department temperature on the third copper bar spare, improve the ability of overflowing, ensure that liquid cooling BDU structure work realizes driving safety's effect at reasonable temperature range.
In some embodiments, the copper bar assembly further comprises a fourth copper bar, the fourth copper bar is connected with a main negative relay, at least one part of the fourth copper bar is structured to form a total negative external total output end, a quick negative charge output end and a negative electrode total output end, and the fourth copper bar is in insulation contact with the liquid cooling mechanism.
At the in-process of above-mentioned realization, fourth copper bar spare carries out insulating connection with liquid cooling mechanism for when connecting the main negative relay on the first copper bar spare, can effectively reduce the junction point department temperature on the fourth copper bar spare, improve the ability of overflowing, ensure that liquid cooling BDU structure work realizes driving safety's effect at reasonable temperature range.
In some embodiments, the liquid-cooled BDU structure further comprises a negative current detection sensor corresponding in structure to at least a portion of the fourth copper bar for current detection of the fourth copper bar.
In a second aspect, the present application further provides a vehicle comprising a liquid-cooled BDU structure as in any one of the previous claims.
The vehicle provided in the embodiment of the second aspect of the present application includes the liquid-cooled BDU structure described in the technical solution of the first aspect, so that all technical effects of the above-described embodiment are achieved, and details are not described herein.
Additional features and advantages of the present application will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the embodiments of the present application. The objectives and other advantages of the application may be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for a user of ordinary skill in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic structural diagram of a liquid-cooled BDU structure disclosed in an embodiment of the present application.
Fig. 2 is a schematic structural diagram of a BDU mechanism of a liquid-cooled BDU structure disclosed in an embodiment of the present application.
Reference numerals
100. A BDU mechanism; 101. a first copper bar member; 1011. a main positive relay; 1012. a total positive external total output end; 1013. a positive current detection terminal; 1014. a positive current detection sensor; 102. a second copper bar member; 1021. a positive total output end; 1022. a fuse; 103. a third copper bar member; 1031. a fast charging high voltage relay; 1032. a fast charging positive output end; 104. a fourth copper bar member; 1041. a main negative relay; 1042. a total negative external total output end; 1043. a quick charge negative output end; 1044. a negative total output end; 1045. a negative current detection sensor; 200. a liquid cooling mechanism; 300. a thermally conductive pad; 301. an insulating film.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present application, as presented in the figures, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments obtained by a user of ordinary skill in the art based on the embodiments in the present application without any creative effort belong to the protection scope of the present application.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present application, it is noted that the terms "first", "second", "third", and the like are used merely for distinguishing between descriptions and are not intended to indicate or imply relative importance.
In the description of the present application, it is further noted that, unless expressly stated or limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case to a user of ordinary skill in the art.
Examples
At present, based on the consideration of technology, process maturity and processing cost, the mainstream new energy automobile at home and abroad selects an air-cooled BDU structure scheme, and the air-cooled BDU structure scheme has the advantages of simple structure, low cost and the like, and specifically comprises the following steps: (1) In the aspect of the shell structure, the BDU shell adopts an injection molding integrated forming scheme, all parts are fixed in the BDU shell, the fastening process is relatively mature, the structure is simple, and the production is convenient; (2) On the aspect of shell reliability, the technical scheme is mature, the problems of shell cracking and the like rarely occur, and the reliability is high.
The inventor finds that the existing BDU schemes all adopt an air cooling heat dissipation mode in the design process, and the BDU has two defects: (1) under some harsh working conditions, the temperature of copper bars such as a high-voltage relay, a fuse, a high-voltage connector and the like is high, and the service life of the relay is influenced if the temperature is serious; (2) the copper bar is limited by a structural layout and an air-cooled heat dissipation mode, the overcurrent capacity of the copper bar is also limited, the 4C/6C high-current operation working condition cannot be met, and if the copper bar meets the superposition working conditions of high-speed climbing, high-power quick charging and the like, over-temperature alarm can be caused, so that the power performance and the endurance mileage of the whole vehicle are influenced, and the competitiveness of the product is reduced.
In view of this, as shown in fig. 1, in a first aspect, the present application provides a liquid-cooled BDU structure comprising: BDU mechanism 100 and liquid cooling mechanism 200, BDU mechanism 100 set up in the top of liquid cooling mechanism 200, just BDU mechanism 100 with carry out insulation treatment between the liquid cooling mechanism 200, make BDU mechanism 100 carries out the during operation, can pass through liquid cooling mechanism 200 is right the copper bar subassembly of BDU mechanism 100 cools down to the realization is to the accurate control of copper bar subassembly temperature, improves its ability of overflowing.
Specifically, the BDU mechanism 100 has a copper bar assembly having a first connection end and a second connection end configured as a negative output end and/or a positive output end; and the liquid cooling mechanism 200 is configured at one side of the BDU mechanism 100 and is in insulated contact with the first connecting end so as to cool the copper bar assembly.
Illustratively, the liquid cooling mechanism 200 includes, but is not limited to, a liquid cooling plate, the liquid cooling mechanism 200 has a water inlet and a water outlet, and the opening mode thereof may be a normal open mode and a relative open mode (i.e., the opening degree of the water inlet and the water outlet is flexibly set according to actual conditions), and may be combined with actual driving conditions, such as high-speed climbing, high-power quick charging and the like, and adaptively adjust the opening degree of the water inlet and the water outlet according to the temperature degree of the copper bar assembly, and implement an optimal thermal management control strategy, so that the temperature difference of the copper bar assembly is controlled within a reasonable range, thereby ensuring driving safety.
It can be understood that, known by whole car test data and simulation result, with the copper bar subassembly that high-voltage relay (if main positive relay 1011, main negative relay 1041 etc.), high-voltage connector etc. link to each other, its tie point temperature is all higher, adopts the extension with its tie point department now the copper bar subassembly is perhaps changed methods such as the molding of copper bar subassembly make the copper bar subassembly with liquid cooling mechanism 200 carries out insulation contact (indirect contact promptly), in time conducts the heat to in the coolant liquid in the liquid cooling mechanism 200, its radiating path is: the copper bar assembly-insulation material (thermal pad 300 and insulating film 301) -the liquid cooling mechanism 200-coolant, which is typically water and glycol, for example, in a volume ratio of water to glycol: 50%:50%, wherein the liquid cooling mechanism 200 indirectly contacts the copper bar assembly, so as to provide a heat transfer path with uniform and high heat capacity, reduce the thermal contact resistance of the original air cooling scheme, and greatly ensure the temperature transfer efficiency and temperature control performance, for example, after the liquid cooling mechanism 200 is adopted for cooling, the temperature of the copper bar assembly can be accurately controlled to 40 ℃ from the original maximum temperature of 95 ℃, so that under the condition of realizing the same overcurrent capacity, the overcurrent cutoff area of the copper bar assembly is reduced by 10% -20%, the volume of the copper bar is equivalently reduced by 10% -20%, the technical cost reduction purpose is achieved, meanwhile, the service lives of high-voltage components such as a high-voltage relay 1022, a high-voltage connector, a fuse 1022 and the like can be prolonged (by 3% -10%), the service lives of the high-voltage components are protected to the greatest extent, and the safety of a battery pack is improved.
It should be noted that the first connection end of the copper bar assembly can be directly in insulation contact with the liquid cooling mechanism 200 along the up-down direction, and can also be in insulation contact with the liquid cooling mechanism 200 in a bending manner or the like, and no special limitation is made here, and the first connection end can be set according to the situation of things.
In the process of the above realization, the BDU mechanism 100 has the copper bar assembly, and the first connection end of the copper bar assembly is in insulation contact with the liquid cooling mechanism 200, so that an even and high heat capacity heat transmission path can be provided for the copper bar assembly, the temperature of the copper bar assembly can be effectively reduced, and the overcurrent capacity of the copper bar assembly under the same overcurrent sectional area is increased.
As shown in fig. 1, the liquid-cooled BDU structure further includes a thermal pad 300, and the thermal pad 300 is disposed between the first connection end and the liquid-cooled mechanism 200. Can form insulating between liquid cooling mechanism 200 and the copper bar subassembly, when avoiding the phenomenon such as short circuit to appear in the liquid cooling BDU structure, also can pass to the heat of copper bar subassembly to liquid cooling mechanism 200, reduce the temperature of copper bar subassembly tie point, improve the ability of overflowing, also can realize reduce cost's purpose simultaneously.
Illustratively, the thermal pad 300 includes, but is not limited to, an insulating thermal pad 300, and its main performance parameters are: (1) density: g/cm3 is not more than 2.5; (2) flame retardant rating: v0; (3) coefficient of thermal conductivity: more than or equal to 3W/(m.K) @ compressed by 30% +/-5% and the standard ASTM D5470; the thickness and the size and the area of the thermal pad 300 can be optimized and matched by combining the assembly and the heat dissipation simulation, which is not described in detail herein.
In some embodiments, the liquid-cooled BDU structure further comprises an insulating film 301, the insulating film 301 is connected to the first connection end, and the insulating film 301 is in contact with the thermal pad 300. Can wrap up the first link of copper bar subassembly, realize the insulation to the copper bar subassembly, improve the security performance of product.
For example, the material of the insulating film 301 may be polyurethane mixture, polyimide film, or the like, and the main performance parameters of the insulating film 301 are: (1) the insulating strength is more than or equal to 5.5KV/mil; (2) the tensile strength is more than or equal to 140MPa; (3) coefficient of thermal conductivity: not less than 3W/(m.K); wherein the thickness and depth of the insulating film 301 can be optimally matched with the actual assembly effect and the electrical myocardial infarction simulation effect.
As shown in fig. 2, the copper bar assembly includes a first copper bar 101, a main positive relay 1011 is connected to the first copper bar 101, one end of the first copper bar 101 is connected to the liquid cooling mechanism 200 in an insulating manner, and the other end of the first copper bar is used to form a total positive external total output end 1012 and a positive current detection end 1013.
In the realization process of above-mentioned realization, first copper bar 101 carries out insulating connection with liquid cooling mechanism 200 for when connecting main positive relay 1011 on first copper bar 101, can effectively reduce the junction point department temperature on first copper bar 101, improve the ability of overflowing, ensure that liquid cooling BDU structure work realizes driving safety's effect in reasonable temperature range.
In some embodiments, the liquid-cooled BDU structure further includes a positive current detection sensor 1014, the positive current detection sensor 1014 connected to the positive current detection terminal 1013. The positive current detection sensor 1014 is connected with the positive current detection end 1013, so that the current of the first copper bar 101 can be detected, and the working safety of the first copper bar 101 is ensured.
In some embodiments, the copper bar assembly further comprises a second copper bar 102, one end of the second copper bar 102 is configured as a positive total output end 1021, the other end of the second copper bar 102 is connected to a fuse 1022, the fuse 1022 is connected to the positive current detection end 1013, and the second copper bar 102 is in insulated contact with the liquid cooling mechanism 200.
In the process of the realization, the second copper bar piece 102 is in insulation connection with the liquid cooling mechanism 200, so that when the fuse 1022 is connected to the first copper bar piece 101, the temperature of the connecting point on the second copper bar piece 102 can be effectively reduced, the overcurrent capacity is improved, the liquid cooling BDU structure is ensured to work in a reasonable temperature range, and the driving safety effect is realized.
In some embodiments, the copper bar assembly further comprises a third copper bar 103, the third copper bar 103 is respectively connected to the fast charging high voltage relay 1031 and the positive current detection end 1013, at least a portion of the third copper bar 103 is configured to form a fast charging positive output end 1032, and the third copper bar 103 is in insulation contact with the liquid cooling mechanism 200.
In the process of the realization, the third copper bar piece 103 is in insulation connection with the liquid cooling mechanism 200, so that when the quick-charging high-voltage relay 1031 is connected to the first copper bar piece 101, the temperature of the connecting point on the third copper bar piece 103 can be effectively reduced, the overcurrent capacity is improved, the liquid cooling BDU structure is ensured to work in a reasonable temperature range, and the driving safety effect is realized.
In some embodiments, the copper bar assembly further includes a fourth copper bar 104, the main negative relay 1041 is connected to the fourth copper bar 104, at least a portion of the fourth copper bar 104 is configured to form a total negative external total output terminal 1042, a quick charge negative output terminal 1043, and a negative total output terminal 1044, and the fourth copper bar 104 is in insulation contact with the liquid cooling mechanism 200.
In the process of realizing, fourth copper bar piece 104 carries out insulating connection with liquid cooling mechanism 200 for when connecting on first copper bar piece 101 main negative relay 1041, can effectively reduce the junction point department temperature on fourth copper bar piece 104, improve the ability of overflowing, ensure that liquid cooling BDU structure work realizes driving safety's effect at reasonable temperature range.
In some embodiments, the liquid-cooled BDU structure further includes a negative current detection sensor 1045 corresponding in structure to at least a portion of the fourth copper bar 104 for current detection of the fourth copper bar 104.
In a second aspect, the present application further provides a vehicle comprising a liquid-cooled BDU structure as described in any one of the above. It can be understood that the BDU mechanism 100 in the liquid-cooled BDU structure is cooled by the liquid-cooled mechanism 200, so that the integration level of the whole structure is improved, the structural design is simplified, the complexity of the whole structure is reduced, and the operation is convenient.
The vehicle provided by the embodiment of the second aspect of the present application includes the liquid-cooled BDU structure described in the technical solution of the first aspect, so that all technical effects of the embodiments described above are achieved, and details are not described herein.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (10)
1. A liquid-cooled BDU structure comprising:
the BDU mechanism is provided with a copper bar assembly, the copper bar assembly is provided with a first connecting end and a second connecting end, and the second connecting end is configured to be a negative electrode output end and/or a positive electrode output end;
and the liquid cooling mechanism is arranged on one side of the BDU mechanism and is in insulated contact with the first connecting end so as to cool the copper bar assembly.
2. The liquid-cooled BDU structure of claim 1, further comprising a thermal pad disposed between the first connection end and the liquid-cooled mechanism.
3. The liquid-cooled BDU structure of claim 2, further comprising an insulator film coupled to the first connection end, the insulator film in contact with the thermal pad.
4. The liquid-cooled BDU structure of claim 1, wherein the copper bar assembly includes a first copper bar member having a main positive relay connected thereto, and wherein one end of the first copper bar member is in insulated connection with the liquid-cooled mechanism and the other end thereof is configured to form a total positive-to-external total output terminal and a positive current detection terminal.
5. The liquid-cooled BDU structure of claim 4, further comprising a positive current sense sensor connected to the positive current sense terminal.
6. The liquid-cooled BDU structure of claim 4, wherein the copper bar assembly further includes a second copper bar piece, one end of the second copper bar piece is configured as a positive bus output and the other end is connected to a fuse, the fuse is connected to the positive current sensing terminal, and the second copper bar piece is in insulated contact with the liquid-cooled mechanism.
7. The liquid-cooled BDU structure of claim 4, wherein the copper bar assembly further includes a third copper bar piece, the third copper bar piece being connected to the fast charge high voltage relay and the positive current sense terminal, respectively, at least a portion of the third copper bar piece being structured to form a fast charge positive output, and the third copper bar piece being in insulating contact with the liquid-cooled mechanism.
8. The liquid-cooled BDU structure of claim 4, wherein the copper bar assembly further comprises a fourth copper bar having a main negative relay connected thereto, at least a portion of the fourth copper bar configured to form a total negative external total output, a quick charge negative output, and a negative total output, and the fourth copper bar in insulated contact with the liquid-cooled mechanism.
9. The liquid-cooled BDU structure of claim 8, further comprising a negative current detection sensor corresponding in structure to at least a portion of the fourth copper bar for current detection by the fourth copper bar.
10. A vehicle comprising a liquid-cooled BDU structure as claimed in any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211047870.5A CN115243531A (en) | 2022-08-30 | 2022-08-30 | Liquid cooling BDU structure and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211047870.5A CN115243531A (en) | 2022-08-30 | 2022-08-30 | Liquid cooling BDU structure and vehicle |
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| Publication Number | Publication Date |
|---|---|
| CN115243531A true CN115243531A (en) | 2022-10-25 |
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ID=83680366
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211047870.5A Pending CN115243531A (en) | 2022-08-30 | 2022-08-30 | Liquid cooling BDU structure and vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115243531A (en) |
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2022
- 2022-08-30 CN CN202211047870.5A patent/CN115243531A/en active Pending
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Country or region after: China Address after: No. 36 Longying Road, Shilou Town, Panyu District, Guangzhou City, Guangdong Province Applicant after: GAC AION NEW ENERGY AUTOMOBILE Co.,Ltd. Address before: No. 36 Longying Road, Shilou Town, Panyu District, Guangzhou City, Guangdong Province Applicant before: GAC AION New Energy Vehicle Co.,Ltd. Country or region before: China |
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