Automobile central electric appliance junction box

Abstract

The utility model relates to an automobile central electric appliance junction box, which is characterized in that a constant electric safety branch, a starting safety branch, a switching time-delay relay, a load safety circuit and a power supply safety branch are arranged on a centralized control board, a 12V storage battery is respectively connected with the constant electric safety branch and the starting safety branch through the switching time-delay relay, and the load safety circuit is connected with the power supply safety branch through the load safety circuit. The output end of the constant electric safety branch and the output end of the starting safety branch are both connected with a load safety circuit, and a 400 / 800 V power battery is connected with a 12 V storage battery preceding-stage charger through a charging safety branch. The input end of the switching time-delay relay is connected with the 12V storage battery, the normally-closed output end and the normally-open output end of the switching time-delay relay are connected with the constant electric safety branch and the starting safety branch, and the coil end of the switching time-delay relay is connected with an automobile ignition lock. The automobile central electric appliance junction box is additionally provided with a charging device between a charging insurance protection power supply and a constant power supply, and provides different insurance paths for a starting stage and normal operation so as to ensure the safe operation of each load.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of automobile accessories, in particular to an automobile central electric appliance junction box. BACKGROUND

[0002] With the popularity of pure electric, hybrid and other new energy vehicles, and the development of Internet of Things and automatic control technology in the automotive field, the number of vehicle electric control function components increases, and the original gasoline vehicle central junction box control panel part has gradually failed to meet the development needs of new vehicle models. Therefore, future vehicle models need to have larger capacity, more subdivided fuse positions, and more number and specification of control relays in order to facilitate the smooth start and safe operation of vehicle function loads. SUMMARY

[0003] The technical problem to be solved by the utility model is to provide an automobile central electric appliance junction box which adds a charging device between the power supply of the power supply of the new energy vehicle and the normal power supply, and provides different insurance paths during the starting stage and normal operation. On the basis of subdividing the fuse level, the insurance position is switched as needed to control the power supply capacity, ensure the accommodation of excess surge current required for the smooth start of vehicle function loads, and switch the capacity to ensure the safe operation of each load during normal operation.

[0004] The automobile central electric appliance junction box comprises a box body and a control panel arranged in the box body, the control panel is provided with a normal power insurance branch for connecting a 12V storage battery of an automobile, a starting insurance branch and a switching delay relay, a load insurance circuit for connecting a load, and a power supply insurance branch for connecting a 400 / 800V power battery of the automobile, wherein the 12V storage battery is connected to the normal power insurance branch and the starting insurance branch through the switching delay relay, the output ends of the normal power insurance branch and the starting insurance branch are connected to the load insurance circuit, and the 400 / 800V power battery is connected to a pre-stage charger of the 12V storage battery through the power supply insurance branch; the input end of the switching delay relay is connected to the 12V storage battery, the normally closed and normally open output ends of the switching delay relay are connected to the normal power insurance branch and the starting insurance branch, and the coil end of the switching delay relay is connected to an automobile ignition lock.

[0005] Further, the normal power insurance branch comprises a control insurance, an instrument insurance and a communication insurance, the load insurance circuit comprises a plurality of control relay branches for connecting vehicle-mounted device terminals, and the output end of the control insurance is connected to each control relay branch; the output end of the instrument insurance is connected to each automobile instrument; and the output end of the communication insurance is connected to a vehicle-mounted ECU and a central control screen.

[0006] Further, the control fuse adopts a 15A fuse, the instrument fuse adopts a 20A fuse, the communication fuse adopts a 5A fuse, the starting fuse branch adopts an 80A fuse, and the power compensation fuse branch adopts a 100A fuse.

[0007] Further, the control relay branches are connected in parallel to form a control circuit, the input end of the control circuit is connected with the output end of the control fuse and the starting fuse branch, and the output end of the control circuit is grounded.

[0008] Further, the control circuit comprises an air conditioner relay module, a car light relay module, a car window relay module, a wiper relay module, a horn relay, and a door lock relay, each relay / relay module is connected in parallel with a fuse branch to form a corresponding control relay branch.

[0009] Further, the air conditioner relay module adopts a 20A fuse in parallel, the car light relay module adopts a 15A fuse in parallel, and the car window relay module, the wiper relay module, the horn relay and the door lock relay adopt a 10A fuse in parallel.

[0010] The utility model discloses a kind of automobile central electrical wiring box, it adds power compensation fuse protection charging equipment between power and normal power supply for new energy automobile power form, simultaneously provides different fuse path in starting stage and normal operation, on the basis of subdividing fuse grade, supply capacity is switched as needed, ensure the required accommodation excess surge current for the smooth start of vehicle function load, and when normal operation, switching contraction capacity is ensured to guarantee the safe operation of each load. BRIEF DESCRIPTION OF DRAWINGS

[0011] The utility model discloses a kind of automobile central electrical wiring box, it adds power compensation fuse protection charging equipment between power and normal power supply for new energy automobile power form, simultaneously provides different fuse path in starting stage and normal operation, on the basis of subdividing fuse grade, supply capacity is switched as needed, ensure the required accommodation excess surge current for the smooth start of vehicle function load, and when normal operation, switching contraction capacity is ensured to guarantee the safe operation of each load.

[0012] Figure 1 It is the logic structure and device connection principle line frame diagram of the control panel of the automobile central electrical wiring box described in the utility model;

[0013] Figure 2 It is the use state operation connection principle line frame diagram of the automobile central electrical wiring box and vehicle-mounted equipment.

[0014] In the drawing:

[0015] 1-normal power fuse branch, 2-starting fuse branch, 3-switching delay relay, 4-load fuse circuit, 5-power compensation fuse branch;

[0016] 11-control fuse, 12-instrument fuse, 13-communication fuse, 41-control relay branch. DETAILED DESCRIPTION

[0017] In the utility model, unless another definite provision and limitation, the terms "mount", "link", "connect", "fix" and so on should be broad sense understanding, for example, can be fixed connection, also can be detachable connection, or be integrated; can be direct connection, also can be indirect connection through intermediate medium, can be two element internal communication or two element mutual action relation. For ordinary skilled person in the art, can understand the specific meaning of above-mentioned terms in the utility model according to specific circumstances.

[0018] In the description of the utility model, it is understood that the orientation or position relation indicated by the terms "left", "right", "front", "back", "top", "bottom", "inner", "outer" and so on are all based on the orientation or position relation shown in the drawing, and are only for the convenience of describing the utility model and simplifying the description, and not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, therefore, cannot be understood as the limitation of the utility model.

[0019] The technical scheme of the utility model is further described below with specific embodiments, but the protection scope of the utility model is not limited to the following embodiments.

[0020] Embodiment 1: as shown in Figure 1 , 2 The automobile central electric appliance junction box includes a box body and a control panel arranged in the box body, the control panel is provided with a normal power fuse branch 1 for connecting a 12V storage battery of an automobile, a starting fuse branch 2 and a switching delay relay 3, a load fuse circuit 4 for connecting a load, and a power supply fuse branch 5 for connecting a 400 / 800V power battery of the automobile, wherein the 12V storage battery is connected with the normal power fuse branch 1 and the starting fuse branch 2 through the switching delay relay 3, the output ends of the normal power fuse branch 1 and the starting fuse branch 2 are connected with the load fuse circuit 4, and the 400 / 800V power battery is connected with a pre-stage charger of the 12V storage battery through the power supply fuse branch 5; the input end of the switching delay relay 3 is connected with the 12V storage battery, the normally closed and normally open output ends of the switching delay relay 3 are connected with the normal power fuse branch 1 and the starting fuse branch 2, and the coil end of the switching delay relay 3 is connected with an automobile ignition lock.

[0021] Embodiment 2: the constant power insurance branch 1 of the automobile central electrical appliance junction box comprises a control insurance 11, an instrument insurance 12 and a communication insurance 13, the load insurance circuit 4 comprises a plurality of control relay branches 41 for connecting terminals of various vehicle-mounted devices, the output end of the control insurance 11 is connected to each control relay branch 41, the output end of the instrument insurance 12 is connected to each automobile instrument, and the output end of the communication insurance 13 is connected to a vehicle-mounted ECU and a central control screen. The control insurance 11 adopts a 15A fuse, the instrument insurance 12 adopts a 20A fuse, the communication insurance 13 adopts a 5A fuse, the insurance of the starting insurance branch 2 adopts an 80A fuse, and the supplementary power insurance branch 5 adopts a 100A fuse. The remaining structures and components are as described in Embodiment 1 and will not be repeatedly described.

[0022] Embodiment 3: the control relay branches 41 of the automobile central electrical appliance junction box are connected in parallel to form a control circuit, the input end of the control circuit is connected to the control insurance 11 and the output end of the starting insurance branch 2, and the output end of the control circuit is connected to the ground. The remaining structures and components are as described in Embodiment 1 and will not be repeatedly described.

[0023] Embodiment 4: the control circuit of the automobile central electrical appliance junction box comprises an air conditioner relay module, a vehicle lamp relay module, a vehicle window relay module, a wiper relay module, a horn relay and a door lock relay, each relay / relay module is connected in parallel with a branch insurance to form a corresponding control relay branch 41. The air conditioner relay module adopts a 20A insurance in parallel, the vehicle lamp relay module adopts a 15A insurance in parallel, and the vehicle window relay module, the wiper relay module, the horn relay and the door lock relay adopt a 10A insurance in parallel. The remaining structures and components are as described in Embodiment 1 and will not be repeatedly described.

[0024] The automobile central electrical appliance junction box adds a supplementary power insurance protection power between a charging device and a constant power source, simultaneously provides different insurance paths in a starting stage and a normal operation, switches an insurance gear according to needs on the basis of subdividing a fuse level to control a power supply capacity, ensures that an excess surge current required for smooth starting of a whole vehicle function load is accommodated, and switches a contraction capacity in a normal operation to ensure safe operation of each load.

[0025] The above description shows the main features, basic principles, and advantages of the present application. For those skilled in the art, it is obvious that the present application is not limited to the details of the above exemplary embodiments or examples, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present application. Therefore, the above embodiments or examples should be regarded as exemplary and non-limiting. The scope of the present application is defined by the appended claims rather than the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application. Any reference signs in the claims should not be considered as limiting the claims involved.

[0026] In addition, it should be understood that, although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description manner of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that those skilled in the art can understand.

Claims

1. A central electrical junction box for automobiles, comprising a box body and a central control board disposed within the box body, characterized in that: The control panel is provided with a normal power insurance branch (1) for connecting a 12V automobile battery, a starting insurance branch (2) and a switching delay relay (3), a load insurance circuit (4) for connecting a load, a power supply insurance branch (5) for connecting a 400 / 800V automobile power battery, wherein, The 12V battery is connected with the normal power insurance branch (1) and the starting insurance branch (2) through the switching delay relay (3), the output ends of the normal power insurance branch (1) and the starting insurance branch (2) are connected with the load insurance circuit (4), the 400 / 800V automobile power battery is connected with a 12V battery pre-charger through the power supply insurance branch (5), the input end of the switching delay relay (3) is connected with the 12V battery, the normally closed and normally open output ends of the switching delay relay (3) are connected with the normal power insurance branch (1) and the starting insurance branch (2), and the coil end of the switching delay relay (3) is connected with an automobile ignition lock.

2. The automotive center electrical junction block of claim 1, wherein: The normal power insurance branch (1) comprises a control insurance (11), an instrument insurance (12) and a communication insurance (13), the load insurance circuit (4) comprises a plurality of control relay branches (41) for being connected with terminals of various vehicle-mounted devices, the output end of the control insurance (11) is connected with each control relay branch (41), the output end of the instrument insurance (12) is connected with each automobile instrument, and the output end of the communication insurance (13) is connected with a vehicle-mounted ECU and a central control screen.

3. The automotive center electrical junction block of claim 2, wherein: The control insurance (11) adopts a 15A fuse, the instrument insurance (12) adopts a 20A fuse, the communication insurance (13) adopts a 5A fuse, the insurance of the starting insurance branch (2) adopts an 80A fuse, and the power supply insurance branch (5) adopts a 100A fuse.

4. The automotive center electrical junction block of claim 3, wherein: Each control relay branch (41) is connected in parallel to form a control circuit, the input end of the control circuit is connected with the output ends of the control insurance (11) and the starting insurance branch (2), and the output end of the control circuit is grounded.

5. The automotive center electrical junction block of claim 4, wherein: The control circuit comprises an air conditioner relay module, a vehicle lamp relay module, a vehicle window relay module, a wiper relay module, a horn relay and a door lock relay, each relay / relay module is connected in parallel with a branch insurance to form a corresponding control relay branch (41).

6. The automotive center electrical junction block of claim 5, wherein: The air conditioner relay module adopts a 20A insurance in parallel, each vehicle lamp relay module adopts a 15A insurance in parallel, and the vehicle window relay module, the wiper relay module, the horn relay and the door lock relay adopt a 10A insurance in parallel.

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