CN114566309A - Cable, electric energy transmission system and vehicle - Google Patents

Cable, electric energy transmission system and vehicle Download PDF

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Publication number
CN114566309A
CN114566309A CN202210217385.1A CN202210217385A CN114566309A CN 114566309 A CN114566309 A CN 114566309A CN 202210217385 A CN202210217385 A CN 202210217385A CN 114566309 A CN114566309 A CN 114566309A
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CN
China
Prior art keywords
rigid conductor
conductor segment
cable
vehicle
segment
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202210217385.1A
Other languages
Chinese (zh)
Inventor
徐海清
王敏
高俊哲
钟华龙
闻伟力
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guangzhou Xiaopeng Motors Technology Co Ltd
Original Assignee
Guangzhou Xiaopeng Motors Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Guangzhou Xiaopeng Motors Technology Co Ltd filed Critical Guangzhou Xiaopeng Motors Technology Co Ltd
Priority to CN202210217385.1A priority Critical patent/CN114566309A/en
Publication of CN114566309A publication Critical patent/CN114566309A/en
Priority to PCT/CN2023/079935 priority patent/WO2023169383A1/en
Pending legal-status Critical Current

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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01BCABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00Insulated conductors or cables characterised by their form
    • H01B7/0045Cable-harnesses
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60LPROPULSION 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
    • B60L53/00Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
    • B60L53/10Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles characterised by the energy transfer between the charging station and the vehicle
    • B60L53/14Conductive energy transfer
    • B60L53/18Cables specially adapted for charging electric vehicles
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01BCABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00Insulated conductors or cables characterised by their form
    • H01B7/0009Details relating to the conductive cores
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01BCABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00Insulated conductors or cables characterised by their form
    • H01B7/009Cables with built-in connecting points or with predetermined areas for making deviations
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01BCABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00Insulated conductors or cables characterised by their form
    • H01B7/04Flexible cables, conductors, or cords, e.g. trailing cables
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01BCABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00Insulated conductors or cables characterised by their form
    • H01B7/08Flat or ribbon cables
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01BCABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00Insulated conductors or cables characterised by their form
    • H01B7/32Insulated conductors or cables characterised by their form with arrangements for indicating defects, e.g. breaks or leaks
    • H01B7/324Insulated conductors or cables characterised by their form with arrangements for indicating defects, e.g. breaks or leaks comprising temperature sensing means
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01BCABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B9/00Power cables
    • H01B9/006Constructional features relating to the conductors
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01BCABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B9/00Power cables
    • H01B9/02Power cables with screens or conductive layers, e.g. for avoiding large potential gradients
    • H01B9/021Features relating to screening tape per se
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R31/00Coupling parts supported only by co-operation with counterpart
    • H01R31/06Intermediate parts for linking two coupling parts, e.g. adapter
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/58Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation characterised by the form or material of the contacting members
    • H01R4/62Connections between conductors of different materials; Connections between or with aluminium or steel-core aluminium conductors
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/58Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation characterised by the form or material of the contacting members
    • H01R4/62Connections between conductors of different materials; Connections between or with aluminium or steel-core aluminium conductors
    • H01R4/625Soldered or welded connections
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R2201/00Connectors or connections adapted for particular applications
    • H01R2201/26Connectors or connections adapted for particular applications for vehicles
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/60Other road transportation technologies with climate change mitigation effect
    • Y02T10/70Energy storage systems for electromobility, e.g. batteries
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/60Other road transportation technologies with climate change mitigation effect
    • Y02T10/7072Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10Technologies relating to charging of electric vehicles
    • Y02T90/14Plug-in electric vehicles

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

Embodiments of the present invention provide a cable. The cable is suitable for connecting the charging seat and the connector. The cable comprises a rigid conductor section and a flexible cable section, wherein the rigid conductor section is in a preformed shape structure, the flexible cable section is electrically connected to the rigid conductor section, the rigid conductor section is beneficial to bending arrangement in a space-limited vehicle body environment, and the flexible cable section can absorb vehicle body manufacturing tolerance and manufacturing tolerance of the rigid conductor section and ensure assembly feasibility. In addition, the embodiment of the invention also provides an electric energy transmission system and a vehicle.

Description

Cable, electric energy transmission system and vehicle
Technical Field
The invention relates to the technical field of electric vehicles, in particular to a cable, an electric energy transmission system and a vehicle.
Background
Along with the continuous increase of electric automobile charging power, current ordinary transposition high-voltage cable external diameter continuously increases, in limited whole car space, hardly carries out the cable and arranges, and adopts the solid conductor material to arrange the environment again and can't solve the assembly difficulty or unable assembly problem that leads to because of vehicle manufacturing tolerance and solid conductor machining tolerance under the long distance.
Disclosure of Invention
Embodiments of the present invention propose a cable, a power transmission system or a vehicle to improve at least one of the technical problems described above.
In a first aspect, embodiments of the present invention provide a cable adapted to connect a charging dock and a connector, the cable including a rigid conductor section having a pre-formed shape configuration and a flexible cable section electrically connected to the rigid conductor section.
In a second aspect, another embodiment of the present invention provides a power transmission system, which includes a charging cradle, a connector, and the cable of the above embodiment.
In a third aspect, another embodiment of the invention provides a vehicle that includes the electrical energy transmission system of the above embodiment and a battery pack electrically connected to the connector.
In the above embodiments of the present invention, the rigid conductor segment of the cable has a preformed shape structure, and the flexible cable segment of the cable is electrically connected to the rigid conductor segment, so that in the process of connecting the cable to the charging seat and the connector, the rigid conductor segment can be preformed into a shape adapted to the installation space, which is beneficial to bending and arranging the rigid conductor segment in a space-limited vehicle body environment, and the flexible cable segment can absorb the vehicle body manufacturing tolerance and the manufacturing tolerance of the rigid conductor segment, thereby ensuring the assembly feasibility.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 shows a schematic structural diagram of a vehicle according to an embodiment of the present invention.
Fig. 2 shows a schematic configuration of the electric power transmission system of the vehicle of fig. 1.
Fig. 3 shows a schematic partial structural view of a rigid conductor segment of the power transfer system of fig. 2.
Fig. 4 shows a cut-away schematic view of a female connection terminal of a charging stand of the power transmission system of fig. 2.
Fig. 5 is a partial structural view showing the female connection terminal of fig. 4 before being plugged with the male connection terminal.
Fig. 6 is a partial schematic structural view of the female connection terminal and the male connection terminal of fig. 4 after being plugged.
Fig. 7 illustrates a cut-away schematic view of a connector of the power transfer system of fig. 2.
Fig. 8 shows a schematic view of a part of the structure of the vehicle of fig. 1.
Fig. 9 shows a cut-away schematic view of another part of the vehicle of fig. 1.
Fig. 10 shows a further partial structural representation of the vehicle of fig. 1.
Detailed Description
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
In the cable that current vehicle arranged connection charging seat and connector, for example cable and terminal mainstream adopt copper material, cause whole pencil with high costs, the quality is heavy, and is not light. For example, the cable adopts solid conductor material such as aluminium bar, and solid conductor material can't solve the assembly difficulty or unable assembly problem that leads to because of vehicle manufacturing tolerance and solid conductor machining tolerance again under the long distance arrangement environment, causes the terminal overlap joint to have big stress easily, probably arouses in the later stage use that contact surface contact resistance rises, influences the experience of charging to rigid connection leads to whole cable vibrations problem easily.
In view of the above background, referring to fig. 1, an embodiment of the present invention provides a vehicle 100, wherein cables arranged in the vehicle 100 can effectively improve tolerance and vibration problems.
The vehicle 100 may be a new energy vehicle such as a hybrid electric vehicle and a pure electric vehicle. The vehicle 100 includes an electric power transmission system 10 and a battery pack 20, and both the electric power transmission system 10 and the battery pack 20 are mounted to a vehicle body 30 of the vehicle 100. The battery pack 20 is electrically connected to the power transmission system 10, and the battery pack 20 can receive the power transmitted from the charging gun through the power transmission system 10. The battery pack 20 may be directly electrically connected to the power transmission system 10, or may be electrically connected to the power transmission system 10 through a battery distribution box.
Specifically, referring to fig. 2, the power transmission system 10 includes a charging dock 11, a connector 12, and a cable 13. The charging base 11 may be a fast charging base or a slow charging base. The charging seat 11 may be installed in the vehicle 100 near the rear of the vehicle, for example, the charging seat 11 may be located above the right rear wheel or above the left rear wheel. The connector 12 may be electrically connected to the battery pack 20 or the battery distribution box. The cable 13 is electrically connected between the charging stand 11 and the connector 12, and can transmit the electric power of the charging stand 11 to the connector 12.
The cable 13 includes a rigid conductor section 131 and a flexible cable section 132, the flexible cable section 132 being electrically connected to the rigid conductor section 131. One of the rigid conductor segment 131 and the flexible cable segment 132 may be electrically connected to the charging dock 11, and the other may be electrically connected to the connector 12, and the specific connection situation may be configured according to the actual environment in the vehicle 100. In the illustrated embodiment, the rigid conductor segment 131 is electrically connected to the connector 12 and the flexible cable segment 132 is electrically connected to the charging dock 11.
The rigid conductor segment 131 has a pre-formed shape configuration. For example, the rigid conductor segments 131 may be mounted at the hub sheet metal, and the rigid conductor segments 131 may be preformed in an arc shape to match the hub. Also for example, the rigid conductor segments 131 may be preformed into a multi-bend plate-like structure. In other embodiments, the rigid conductor segment 131 may also be formed in other shapes. Since the rigid conductor segment 131 can be preformed into a shape adapted according to the installation space in which it is installed, accommodation of the rigid conductor segment 131 in the environment of the vehicle body 30 where the space is limited by the bent arrangement is facilitated, and since the bending radius of the rigid conductor segment 131 is small, it can be arranged in a narrow space, contributing to improvement of the space utilization efficiency of the vehicle body 30.
The rigid conductor segment 131 may be a metal conductor segment. For example, the rigid conductor segment 131 may be an aluminum row, which has a light weight compared to copper, and thus, when the length is constant, it is helpful to reduce the weight of the rigid conductor segment 131, thereby satisfying the light weight design of the vehicle 100. Further, the price of the aluminum busbar is cheaper than that of the copper wire, which is convenient for reducing the production cost of the rigid conductor segment 131; the bending radius of the aluminum row can reach three times of the material thickness and three times of the width, the flexibility is good, the aluminum row can be arranged in a narrow environment, and the space occupied by the automobile body 30 can be effectively reduced; meanwhile, the aluminum bar has excellent heat dissipation property. In other embodiments, the rigid conductor segment 131 may also be a conductor segment of other materials.
The rigid conductor segment 131 may be generally rectangular in cross-section, which may help to simplify the manufacturing costs and difficulty of the rigid conductor segment 131, such that the outer surface of the rigid conductor segment 131 is planar, which may help to more stably conform the rigid conductor segment 131 to the vehicle body 30 than an arcuate outer surface. In other embodiments, the cross-section of the rigid conductor segment 131 may take other shapes.
The rigid conductor segments 131 can be adjusted to different requirements by adjusting the size parameters.
For example, referring to fig. 3, the rigid conductor segment 131 has a width w, wherein 25mm w is less than 50 mm. For example, w may be 25mm, 26mm, 27mm, 28mm, 29mm, 30mm, 35mm, 40mm, 45mm, 50mm, or any value between two adjacent values. Thus, the width of the rigid conductor segment 131 is not so small as to lower the overcurrent capability of the rigid conductor segment 131, and the width of the rigid conductor segment 131 is not so large as to increase the weight and cost of the rigid conductor segment 131.
In one embodiment, the width of the rigid conductor segment 131 is 35mm ± 1mm, so that the width of the rigid conductor segment 131 is suitable for facilitating the rigid conductor segment 131 to have better current capacity so that the charging base 11 can be used as a fast charging base, and also for facilitating the reduction of the weight and cost of the rigid conductor segment 131.
Also for example, the rigid conductor segment 131 has a thickness d, wherein d is 3mm < 7 mm. For example, d can be 3mm, 3.1mm, 3.2mm, 3.3mm, 3.4mm, 3.5mm, 3.6mm, 3.7mm, 3.8mm, 3.9mm, 4mm, 4.2mm, 4.4mm, 4.6mm, 4.8mm, 5mm, 5.2mm, 5.4mm, 5.6mm, 5.8mm, 6mm, or any value between any two of the foregoing. Thus, the thickness of the rigid conductor segment 131 is not too thin, which results in insufficient strength of the rigid conductor segment 131, and the thickness of the rigid conductor segment 131 is not too thick, which results in poor bending characteristics.
In one embodiment, the thickness of the rigid conductor segment 131 is 5.3mm ± 1mm, so that the thickness of the rigid conductor segment 131 is suitable to facilitate the rigid conductor segment 131 to have high strength and good bending characteristics.
The flexible cable segment 132 is soft and has better flexibility than the rigid conductor segment 131. The flexible cable segment 132 can absorb the manufacturing tolerance of the vehicle body 30 and the manufacturing tolerance of the rigid conductor segment 131, ensuring assembly feasibility. For example, when the manufacturing tolerance of the vehicle body 30 is large, the deviation between the actual distance between the charging seat 11 and the connector 12 and the preset distance is easily large, and the flexible cable 13 can adapt to the manufacturing tolerance by adjusting the bending degree or the deflection direction of the flexible cable, so that the cable 13 can be stably connected between the charging seat 11 and the connector 12, and the vibration resistance effect of the cable 13 can be improved.
The flexible cable segment 132 may be a copper wire, which helps to reduce the cost of the flexible cable segment 132. The flexible cable segment 132 may also be a soft copper bar, a soft copper foil, a soft braid, or the like. In other embodiments, the flexible cable segment 132 may also be other flexible conductive structures.
The flexible cable segment 132 and the rigid conductor segment 131 may be welded in one piece. For example, the flexible cable segment 132 and the rigid conductor segment 131 may be welded together by ultrasonic welding, so that two structures with large differences in physical properties, such as the flexible cable segment 132 and the rigid conductor segment 131, are welded together effectively, and the welding point has high strength and good stability. Wherein one end of the flexible cable segment 132 may be welded to one end of the rigid conductor segment 131. In other embodiments, the flexible cable segment 132 and the rigid conductor segment 131 may be welded by other welding methods.
The flexible cable segment 132 and the rigid conductor segment 131 may also be crimped together. For example, the flexible cable segment 132 and the rigid conductor segment 131 can be connected together by screwing, and the connection is simple and low in cost. Wherein, one end of the flexible cable segment 132 and one end of the rigid conductor segment 131 can be connected by a bolt. In other embodiments, the flexible cable segment 132 and the rigid conductor segment 131 may be crimped in other manners.
The cable 13 may also be insulated and shielded where the flexible cable segment 132 meets the rigid conductor segment 131. For example, the cable 13 may also include a transition 133, and the transition 133 may be located at the junction of the flexible cable section 132 and the rigid conductor section 131. The adaptor 133 may be injection molded, encapsulated, cold-shrink tubing, sealed box, or the like. In other embodiments, the adapter 133 may have other structures.
The transition portion 133 may be fixed to the vehicle body 30 to reduce the impact of vibration on the junction of the flexible cable section 132 and the rigid conductor section 131. The adapter 133 may be fixed to the vehicle body 30 by a snap-fit structure. In other embodiments, the adapter 133 may be fixed to the vehicle body 30 in other manners.
The cable 13 may further include a temperature sensor 134, and the temperature sensor 134 may be disposed at the junction of the flexible cable segment 132 and the rigid conductor segment 131, for example, the temperature sensor 134 may be disposed at the transition portion 133. Because the flexible cable segment 132 and the rigid conductor segment 131 have two different structures, the consistency of the cable 13 at the joint of the flexible cable segment 132 and the rigid conductor segment 131 is poor, and the joint generates heat obviously in the process of transmitting electric energy by the cable 13. The temperature sensor 134 may detect the temperature of the junction, and the domain controller of the vehicle 100 may adjust the power consumption by acquiring the temperature data detected by the temperature sensor 134, which helps to ensure that the junction is not over-temperature.
The temperature sensor 134 may be, among other things, a thermocouple sensor, a thermistor sensor, a resistance temperature sensor 134, an analog output sensor, a digital output sensor, or other type of sensor.
The cable 13 may also be provided with a protective structure to protect the rigid conductor section 131. For example, cable 13 may further include a first protective sheath, which may be the same shape as rigid conductor segment 131, and which may be larger in size than rigid conductor segment 131, and rigid conductor segment 131 may be encased within the first protective sheath to provide integral shielding of rigid conductor segment 131. The first protective shell may be a metal shell, for example, the first protective shell may be an aluminum shell. In other embodiments, the first protective shell may be made of other materials.
The cable 13 may also be provided with a protective structure to protect the flexible cable segment 132. For example, the cable 13 may also include a second protective sheath that may encase the flexible cable segment 132. Wherein, the second protective shell can be an injection molding rubber coating or a woven sleeve. In other embodiments, the second protective shell may be made of other materials.
The number of the cables 13 may be two, one of the cables 13 is electrically connected to the positive electrodes of the charging dock 11 and the connector 12, and the other cable 13 is electrically connected to the negative electrodes of the charging dock 11 and the connector 12.
Referring to fig. 4, the female connection terminal of the charging stand 11 may be a cage spring structure. The charging base 11 may include a terminal cylinder 111, a bushing ring 112 and a plurality of cage springs 113, the bushing ring 112 is located in the terminal cylinder 111 and sequentially penetrates through the plurality of cage springs 113, and the plurality of cage springs 113 are annularly distributed along a circumferential direction of the bushing ring 112 and jointly enclose a terminal plugging space. Thus, in the charging stand 11, the axis offset fault tolerance can reach 0.5mm by using the female connection terminal designed by the cage spring, for example, fig. 5 is a schematic diagram before the male connection terminal is inserted into the female connection terminal, and fig. 6 is a schematic diagram after the male connection terminal is inserted into the female connection terminal, so that the male connection terminal and the female connection terminal are in redundant parallel contact. The female connecting terminal has the advantages of being strong in axis deviation fault-tolerant capability, strong in power-on capability, soft in insertion and extraction force and the like, and can be replaced after sale.
The charging base 11 may further include a limiting ring 114, the limiting ring 114 may be mounted at the opening of the terminal cylinder 111, and the limiting ring 114 may be located between the cylinder opening of the terminal cylinder 111 and the bushing ring 112 and used for limiting the bushing ring 112 from being detached from the terminal cylinder 111.
The retainer ring 114 may be snapped into the terminal barrel 111. For example, the outer circumferential surface of the limiting ring 114 may be provided with an annular clamping block, the terminal barrel 111 may be provided with an annular groove, the annular groove may be located at a position close to the opening of the barrel, and the annular clamping block of the limiting ring 114 may be clamped in the annular groove.
The charging base 11 can be welded to the flexible cable segment 132, for example, the copper bar terminal of the charging base 11 can be welded to the flexible cable segment 132 by using ultrasonic welding technology.
The connector 12 and the rigid conductor segment 131 may be connected by a solid-phase rolling composite technique, for example, the conductor of the connector 12 may be a copper ring, the end of the rigid conductor segment 131 may be an aluminum ring, the copper ring and the aluminum ring may be connected by a solid-phase rolling composite technique, and they may be further fixed by bolts, which helps to ensure a sufficient contact area and a small contact resistance between the connector 12 and the rigid conductor segment 131.
Referring to fig. 7, the connector 12 may include a male cylinder 121 and a male terminal 122, the male terminal 122 is located in the male cylinder 121, and an outer circumference of the male terminal 122 is provided with an external thread adapted to be connected with an internal thread of the female terminal 123. So, male end terminal 122 can realize stable connection with female end terminal 123 through the helicitic texture, and is comparatively simple and convenient, and threaded connection's mode helps male end terminal 122 to be connected more compactly with female end terminal 123, and intensity is high, collision resistance, shock resistance, temperature resistant sudden change, guarantees abundant area of contact and less contact resistance, helps keeping connector 12 high current-carrying, little electrical contact resistance and low calorific capacity, has improved traditional connector 12 effectively and has installed inconvenient, current-carrying intensity is not high and compatible not good problem.
The connector 12 may also employ a woven mesh as the shielding layer. The woven mesh may be an aluminium woven mesh, for example. The mesh grid may be substantially square. The woven mesh may be attached to the housing of the connector 12 by a metal clip for shielding.
The Connector 12 may also adopt a temperature sensor to realize a High Voltage Interlock (HVIL) and a Connector secondary locking structure (CPA) function, so as to realize a locking detection function.
Furthermore, the connector 12 may also be provided with a waterproof design. For example, the connection of the connector 12 to the rigid conductor may be provided with a protective waterproof locking ring and waterproof cable ties, which may effectively improve the waterproofing of the connection of the connector 12 to the rigid conductor.
Referring to fig. 8, the vehicle 100 may further include an elastic fixing member 40, and the elastic fixing member 40 may be fixed to the vehicle body 30. For example, the elastic fixing member 40 may be substantially a plate-shaped structure, the edge of the elastic fixing member 40 may be provided with a buckle, and the elastic fixing member 40 may be pre-mounted on a hub metal plate of the vehicle body 30 through the buckle, and may also play a role in clamping the waterproof skirt to meet the requirement of waterproof grade. After the elastic fixing frame is pre-installed on the wheel hub metal plate, the elastic fixing member 40 may be fixed on the wheel hub metal plate through fasteners such as screws, bolts, and the like.
The charging seat 11 and the connector 12 may be respectively located at two sides of the elastic fixing member 40, and the rigid conductor segment 131 may penetrate through the elastic fixing member 40. Thus, the elastic fixing member 40 can absorb the manufacturing tolerance of the vehicle body 30 and the manufacturing tolerance of the rigid conductor segment 131, and contribute to further stable connection of the cable 13 between the charging stand 11 and the connector 12, thereby improving the anti-vibration effect of the cable 13.
The elastic fixing member 40 may be a rubber member made of natural rubber, isoprene rubber, butadiene rubber, styrene butadiene rubber, or the like, or a plastic member made of polyvinyl chloride, polypropylene, polyethylene terephthalate, or the like. The elastic fixing member 40 made of the above material has good elasticity and large deformation amount, and can effectively absorb the manufacturing tolerance of the vehicle body 30 and the manufacturing tolerance of the rigid conductor segment 131. In other embodiments, the elastic fixing member 40 may be made of other materials.
Referring to fig. 9, the elastic fixing member 40 may be provided with a through hole 41 and a groove 42, and the rigid conductor segment 131 may be inserted through the through hole 41. The groove 42 can surround the through hole 41, and the groove 42 helps to increase the deformation degree of the elastic fixing member 40, so that the elastic fixing member 40 can more easily absorb the manufacturing tolerance of the vehicle body 30 and the manufacturing tolerance of the rigid conductor segment 131, and further improve the stability of the cable 13 connecting the charging seat 11 and the connector 12.
The elastic fixing member 40 may include an elastic bellows 43, and the elastic bellows 43 may be sleeved on the rigid conductor segment 131. In this way, the elastic bellows 43 can absorb the variation in the bending direction, the variation in the length, and the mounting tolerance of the rigid conductor segment 131, and effectively improve the stability of the cable 13 connecting the charging stand 11 and the connector 12.
Referring to fig. 10, the vehicle 100 may further include a plurality of fixing brackets 50, the fixing brackets 50 are fixed on the vehicle body 30, and the fixing brackets 50 are sequentially sleeved on the rigid conductor segment 131 along the extending direction of the rigid conductor segment 131. The rigid conductor segment 131 can be fixed to the vehicle body 30 by the plurality of fixing brackets 50, so that the rigid conductor segment 131 is less likely to generate a large sway due to the bumping of the vehicle 100, which helps to ensure the stability of the electrical connection between the rigid conductor segment 131 and the connector 12.
In addition, a shock absorbing structure such as foam or rubber ring may be disposed in the fixing bracket 50, so that the shock between the fixing bracket 50 and the rigid conductor segment 131 may be absorbed by the shock absorbing structure.
Each fixing bracket 50 may include a sleeve portion 51 and a hanging portion 52 connected to each other, the sleeve portion 51 is sleeved on the rigid conductor segment 131, and the hanging portion 52 is suspended outside the sleeve portion 51 of the rigid conductor segment 131. The hanging part 52 is provided with a through hole 521 and a rib 522, and the rib 522 is arranged in the through hole 521 in a protruding mode. The fixing bracket 50 can play a role of pre-hanging other structures of the vehicle 100 through the hanging part 52, which is helpful for improving the use function of the fixing bracket 50 and can better meet the process installation requirement.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present invention, and are intended to be included within the scope of the present invention.

Claims (14)

1. A cable adapted to connect a charging dock and a connector, the cable comprising:
a rigid conductor segment having a preformed shape configuration; and
a flexible cable segment electrically connected to the rigid conductor segment.
2. The cable according to claim 1, wherein said rigid conductor segment is rectangular in cross-section;
the rigid conductor segment has a width w, wherein 25mm < w > 50 mm;
the width of the rigid conductor section is 35mm +/-1 mm;
the rigid conductor segment has a thickness d, wherein d is 3mm < 7 mm;
the thickness of the rigid conductor segment is 5.3mm + -1 mm.
3. The cable of claim 1, further comprising a temperature sensor disposed on the flexible cable segment at the junction with the rigid conductor segment.
4. The cable of claim 1, wherein the rigid conductor segment and the flexible cable segment are ultrasonically welded or bolted together.
5. The cable according to any one of claims 1-4, wherein said rigid conductor segment is an aluminum row and said flexible cable segment is a annealed copper wire.
6. An electrical energy transfer system, comprising:
a charging seat;
a connector; and
a cable according to any one of claims 1 to 5.
7. The electric energy transmission system of claim 6, wherein the charging seat comprises a terminal cylinder, a bushing ring and a plurality of cage springs, the bushing ring is located in the terminal cylinder and sequentially penetrates through the plurality of cage springs, and the plurality of cage springs are annularly distributed along the circumferential direction of the bushing ring and jointly enclose a terminal plugging space.
8. The power transfer system of claim 6, wherein the connector comprises a male end cylinder and a male end terminal, the male end terminal being located within the male end cylinder, an outer peripheral surface of the male end terminal being provided with an external thread adapted to be connected with an internal thread of a female end terminal.
9. A vehicle, characterized by comprising:
a power transfer system according to any one of claims 6 to 8; and
and the battery pack is electrically connected to the connector.
10. The vehicle of claim 9, wherein the vehicle comprises a vehicle body and an elastic fixing member, the elastic fixing member is fixed on the vehicle body, the charging seat and the connector are respectively located on two sides of the elastic fixing member, and the rigid conductor segment is arranged on the elastic fixing member in a penetrating manner.
11. The vehicle of claim 10, wherein the resilient mount is provided with a groove surrounding the through hole and a through hole through which the rigid conductor segment is disposed.
12. The vehicle of claim 10, wherein the resilient mount comprises a resilient bellows that is sleeved over the rigid conductor segment.
13. The vehicle according to claim 9, characterized in that the vehicle further comprises a vehicle body and a plurality of fixing brackets, the plurality of fixing brackets are fixed to the vehicle body, and the plurality of fixing brackets are sequentially sleeved on the rigid conductor section in an extending direction of the rigid conductor section.
14. The vehicle of claim 13, wherein each of the fixing brackets comprises a sleeve portion and a hanging portion connected to each other, the sleeve portion is sleeved on the rigid conductor segment, the hanging portion is suspended outside the sleeve portion of the rigid conductor segment, and the hanging portion has a through hole and a rib protruding from the through hole.
CN202210217385.1A 2022-03-07 2022-03-07 Cable, electric energy transmission system and vehicle Pending CN114566309A (en)

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CN202210217385.1A CN114566309A (en) 2022-03-07 2022-03-07 Cable, electric energy transmission system and vehicle
PCT/CN2023/079935 WO2023169383A1 (en) 2022-03-07 2023-03-06 Cable, electric energy transmission system, and vehicle

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EP4321389A1 (en) * 2022-08-11 2024-02-14 Aptiv Electric Systems Co., Ltd. Automotive wire harness with a flexible connection section

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JP2004224156A (en) * 2003-01-22 2004-08-12 Honda Motor Co Ltd Structure for holding power cable for vehicle
JP5740146B2 (en) * 2010-12-10 2015-06-24 矢崎総業株式会社 Wire harness
CN107202642A (en) * 2017-05-16 2017-09-26 国网浙江省电力公司温州市洞头区供电公司 A kind of temperature of cable junction on-Line Monitor Device
CN208797260U (en) * 2018-09-25 2019-04-26 深圳乔合里科技股份有限公司 Detachable cradle
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CN114566309A (en) * 2022-03-07 2022-05-31 广州小鹏汽车科技有限公司 Cable, electric energy transmission system and vehicle
CN217214182U (en) * 2022-03-07 2022-08-16 广州小鹏汽车科技有限公司 Cable, electric energy transmission system and vehicle
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Publication number Priority date Publication date Assignee Title
WO2023169383A1 (en) * 2022-03-07 2023-09-14 广州小鹏汽车科技有限公司 Cable, electric energy transmission system, and vehicle
EP4321389A1 (en) * 2022-08-11 2024-02-14 Aptiv Electric Systems Co., Ltd. Automotive wire harness with a flexible connection section

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