CN216053915U - Combined wire harness - Google Patents

Abstract

The application discloses combination pencil belongs to integrated pencil technical field, and the combination pencil includes: the first main wiring harness comprises a first power connector connected with external communication equipment; the first control board connector is connected with the battery electronic control unit; a first interface connected with the second main harness; the sub-wire harness connector is connected with the sub-wire harness and used for receiving the acquired data of the sub-wire harness; the second main wire harness comprises a second power connector connected with a power supply; the second interface is connected with the first interface and used for establishing a voltage transmission path between the first main wiring harness and the second main wiring harness; the second control board connector is connected with the battery electronic control unit; and a plurality of power distribution connectors for distributing the supply voltage to different electrical devices.

Description

Combined wire harness

Technical Field

The application belongs to the technical field of integrated wiring harnesses, and particularly relates to a combined wiring harness.

Background

With the rapid development of the energy storage industry, the functions of a Battery Management System (BMS) control box as a core component are more and more, the layout is more compact while the number of internal devices is increased, and the requirement for the connection of an internal wire harness is also more stringent.

In the correlation technique, BMS control box internal connection mainly has two kinds of modes, one kind is the point-to-point connection of single line in traditional regulator cubicle, utilizes terminal row branch line, lays wire casing, cover protective casing and walks line and protection. The method relies on the terminal strip for wire distribution and relies on the wire groove for wiring, so that the occupied space is large, the wiring is complex, and the wiring efficiency is low.

The other type is an integrated combined wire harness in an automobile control box, a trunk wiring path is planned in a three-dimensional digital-analog mode in advance according to specific device layout and circuit connection, and then the three-dimensional combined wire harness is drawn to integrate all the wire harnesses together to form the integrated combined wire harness. Although the method has high assembly efficiency, the development cost and difficulty are high, the method cannot be used universally, when a device needs to be changed, redesign is needed, the adaptability is not high, and lines with different voltages in the wiring harness are mixed in one wiring harness, so that electromagnetic interference exists.

SUMMERY OF THE UTILITY MODEL

This application aims at providing a combination pencil, solves one of the big, not high and the low problem of assembly efficiency of current BMS control box pencil design degree of difficulty at least.

In order to solve the technical problem, the present application is implemented as follows:

the embodiment of the application provides a combined wiring harness, which comprises a first main wiring harness and a second main wiring harness, wherein the first main wiring harness comprises a first power connector connected with external communication equipment, and the first power connector is used for supplying power to the external communication equipment; the first control board connector is connected with the battery electronic control unit and used for transmitting a control signal of the battery electronic control unit; a first interface connected to the second main harness, the first interface being configured to establish a voltage transmission path between the first main harness and the second main harness; the sub-wire harness connector is connected with the sub-wire harness and used for receiving the acquired data of the sub-wire harness; the second main wire harness comprises a second power connector connected with a power supply, and the second power connector is used for introducing power supply voltage; a second interface connected to the first interface, the second interface being configured to establish a voltage transmission path between the first main harness and the second main harness; the second control board connector is connected with the battery electronic control unit and used for supplying power to the battery electronic control unit; and the power distribution connector is used for distributing the power supply voltage to different electric devices so as to provide working voltages corresponding to the electric devices.

Further, the first main harness further comprises a load control connector, the load control connector comprises a load driving connector connected in series with the first control board connector and the first interface, and the load driving connector is used for driving a load.

Further, the load control connector further comprises a contactor connector connected with a contactor of a load, the contactor connector is connected with the first control board connector and the first interface in series, and the contactor connector is used for controlling connection or disconnection of the contactor connected with the load; wherein the contactor connector comprises a positive contactor connector and a negative contactor connector.

Further, the first main wire harness further comprises a communication connector connected with an external controller, the communication connector is electrically connected with the first control board connector, and the communication connector is used for sending data of the battery electronic control unit to the external controller.

Further, the first main wire harness further comprises a pre-charging connector electrically connected with the first interface and the first control board connector, the pre-charging connector is used for controlling the load circuit to be in a pre-charging mode, and the pre-charging connector comprises a positive pre-charging connector and a negative pre-charging connector.

Further, the first main harness further comprises an I/O signal connector for receiving an I/O signal, the I/O signal connector being electrically connected to the first control board connector.

Further, first main pencil still includes the module of examining again, examine the module including the fuse and examine the terminal and the circuit breaker returns and examines the terminal again, return examine the module with first control board connector electricity is connected.

Further, the power distribution connector includes a first distribution connector and a second distribution connector, a first end of the first distribution connector and a first end of the second distribution connector are used for outputting a first preset voltage, and a second end of the first distribution connector and a second end of the second distribution connector are used for outputting a second preset voltage.

Further, the second main harness further includes a switch connector for connecting a switch, an indicator lamp connector for connecting an indicator lamp, and a sensor connector for connecting a sensor, the switch connector, the indicator lamp connector, and the sensor connector being electrically connected to the second power supply connector.

Further, the power supply voltage includes a first voltage and a second voltage, the first voltage being less than the second voltage, wherein the first voltage corresponds to an operating voltage of the first main harness; the second main wire harness further comprises a third interface, the first main wire harness further comprises a fourth interface, a voltage converter is arranged between the third interface and the fourth interface, and the voltage converter is used for converting the second voltage into the first voltage under the condition that the voltage of the power supply is the second voltage.

Further, the sub-harness comprises a sampling harness, the sampling harness comprises a sampling connector and a plurality of sampling probes, the sampling probes are connected with the sampling connector, the sampling probes are used for acquiring sampling data, the sampling connector is connected with the sub-harness connector, and the sampling connector is used for transmitting the sampling data to the first main harness.

Furthermore, the sub-harness comprises an expansion harness, the expansion harness comprises an expansion connector and a plurality of expansion probes, the expansion probes are connected to one contact of the expansion connector through conducting wires, and the expansion connector is connected to a load driving connector or an I/O signal connector.

In the embodiment of this application, according to BMS control box's different demands, carry out classification design according to high-low voltage and function difference with the pencil, wherein, first pencil is the low-voltage pencil for realize control and communication function, the second pencil is the high-voltage pencil, be used for realizing the distribution of power, can realize the expansion of different functions through expanding sub-pencil, have very strong suitability, adopt the design of line to line, can solve current BMS control box pencil design degree of difficulty big, adaptability is not high and the problem that assembly efficiency is low.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a schematic combination diagram of a combined wire harness according to an embodiment of the utility model;

fig. 2 is a schematic structural view of a first main harness of the embodiment of the utility model;

fig. 3 is a schematic structural view of a second main harness of the embodiment of the utility model;

fig. 4 is another structural schematic diagram of the second main harness of the embodiment of the utility model.

FIG. 5 is a schematic diagram of the structure of a current sampling sub-harness in accordance with an embodiment of the present invention;

FIG. 6 is a schematic diagram of a voltage sampling sub-harness according to an embodiment of the present invention;

FIG. 7 is a schematic structural diagram of a temperature sampling sub-harness in accordance with an embodiment of the present invention;

FIG. 8 is a schematic structural diagram of a fan power expansion harness according to an embodiment of the present invention;

FIG. 9 is a schematic structural diagram of an I/O control expansion harness according to an embodiment of the present invention;

reference numerals:

the system comprises A first main wire harness 01, A second main wire harness 02, A sub-wire harness 03, A first POWER connector BMU-1, A first control board connector BECU-P2, A first interface ZJ1, A voltage connector CY-V1, A current connector CY-I1, A temperature connector CY-T1, A load drive connector FAN-A, A positive contactor connector KM1, A negative contactor connector KM2, A communication connector COMM, A positive pre-charging connector K1, A negative pre-charging connector K2, an I/O signal connector I/O, A first fuse recheck terminal X-FU, A second fuse recheck terminal G-FU, A first breaker recheck terminal X-QL, A second breaker recheck terminal G-QL, A second POWER connector POWER, A second interface ZJ2, A second control BECU-P1, A first end V1+ of A first distribution connector, The first end V1 "of the second distribution connector, the second end L1 of the first distribution connector, the second end N1 of the second distribution connector, the sensor connector VT1, the first switch terminal SW1, the second switch terminal SW2, the third interface U2-IN, the fourth interface U2-OUT.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The features of the terms first and second in the description and in the claims of the present application may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality" means two or more unless otherwise specified. In addition, "and/or" in the specification and claims means at least one of connected objects, a character "/" generally means that a preceding and succeeding related objects are in an "or" relationship.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the utility model and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the utility model.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "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 meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The technical idea of the combined wire harness of the embodiment of the utility model is that the connecting wire harness inside the BMS control box is improved in a wire-to-wire combination mode, the connecting wire harness inside the BMS control box is divided into a plurality of wire harness parts according to different functions and different circuit requirements, and the divided wire harnesses are combined when in use, so that the combined wire harness can be conveniently and quickly combined to adapt to different working conditions.

A combined wire harness according to some embodiments of the present invention is described below with reference to fig. 1-9.

As shown in fig. 1, a combined wire harness according to the present embodiment includes: the system comprises a first main wire harness 01, a second main wire harness 02 and a sub-wire harness 03, wherein the first main wire harness 01 is used for realizing internal and external communication and signal control, the second main wire harness 02 is used for supplying power to each internal device according to an external power supply, and the sub-wire harness 03 is used for transmitting sampling data and signals through the first main wire harness 01.

In this embodiment, referring to fig. 2, the first main harness 01 includes a first power connector BMU-1 connected to an external communication device, a first Control board connector BECU-P2 connected to a Battery Electronic Control Unit (BECU), a first interface ZJ1 connected to the second main harness, and a sub harness connector connected to the sub harness.

In a feasible example, the first power connector BMU-1 is used to supply power to an external communication device, the external communication device connected to the first power connector BMU-1 may be a Battery Management Unit (BMU) of a Battery module, and the BMU may implement single cell voltage sampling, module temperature sampling, cell voltage balancing, external communication, and the like.

It should be noted that the first main harness 01 in the present embodiment functions as internal and external communication and signal control, and therefore, the first voltage is preferably a low-voltage signal of 24V or less and the current is small. Therefore, the connectors in the first main beam also need to be selected to be 24V small current, the wires in the first main beam are selected to be 300V small wires, and the wires in the loop with the communication sampling function need to be prevented from interference by using multi-core shielding wires.

In the embodiment, the first control board connector BECU-P2 is connected with the BECU and used for transmitting control signals of the battery electronic control unit, and the first control board connector BECU-P2 can realize the control of the equipment connected with the first main wiring harness 01 by the BECU by establishing the connection between the first main wiring harness 01 and the BECU.

For example, when the circuit formed by the battery management unit BMU, the first power connector BMU-1, the first board connector BECU-P2, and the battery electronic control unit BECU is turned on, the BMU transmits the collected battery data to the BECU, and the BECU may transmit a control signal to the BMU, and the BMU configures the battery according to the control signal.

In this embodiment, the first interface ZJ1 is used to establish a voltage transmission path between the first main harness and the second main harness, that is, the first main harness 01 is connected to the second main harness 02 through the first interface ZJ1, so as to realize the connection between the first main harness 01 and the second main harness 02, wherein the voltage transmitted through the first interface ZJ1 is 24V.

In this embodiment, the sub-harness connectors are used for receiving the acquired data of the sub-harnesses, the number of the sub-harness connectors is multiple, and each sub-harness connector is connected with one sub-harness, so that transmission of signals acquired by each sub-harness is achieved. For example, referring to FIG. 2, there are three sub-harness connectors, voltage connector CY-V1, current connector CY-I1, temperature connector CY-T1, CY-V1, CY-I1, and CY-T1, which connect the voltage acquisition sub-harness, the current acquisition sub-harness, and the temperature acquisition sub-harness, respectively.

In this embodiment, the first main harness 01 further includes A load control connector, which includes A load driving connector FAN-A, which is connected in series with the first control board connector BECU-P2 and the first interface ZJ1, thereby establishing A load driving control path to drive the load to operate.

In this embodiment, the load control connector further includes a positive contactor connector KM1 and a negative contactor connector KM2, and the positive contactor connector KM1 and the negative contactor connector KM2 are used for connecting a contactor of a load. The positive contactor connector KM1 is connected in series with the first control board connector BECU-P2 and the first interface ZJ1, and the negative contactor connector KM2 is connected in series with the first control board connector BECU-P2 and the first interface ZJ1, so that a control path of the load connector is formed, and the load contactor can perform corresponding on or off actions according to a control signal of the BECU. In one possible example, the load having the load contactor may be a fan, a blower, an on-board air conditioner, or the like.

In this embodiment, the first main harness 01 further includes a communication connector COMM electrically connected to the first control board connector BECU-P2, the communication connector COMM is used for connecting to a controller, and the controller is an external system controller. For example, the controller is a network controller in a vehicle. The communication connector COMM is also connected in series with the positive contactor connector KM1, the first control board connector BECU-P2 and the first interface ZJ1, and the communication connector COMM is connected in series with the negative contactor connector KM2, the first control board connector BECU-P2 and the first interface ZJ1, so that the contactor switch states, BECU data, BMU data and the like of the load are uploaded to the external system controller through the communication connector COMM.

In the present embodiment, the first main harness 01 further includes a positive pre-charge connector K1 and a negative pre-charge connector K2, the positive pre-charge connector K1 is electrically connected to the first interface ZJ1 and the first control board connector BECU-P2, and the negative pre-charge connector K2 is electrically connected to the first interface ZJ1 and the first control board connector BECU-P2. The positive pre-charge connector K1 and the negative pre-charge connector K2 are used to pre-charge the load capacitance of the circuit when the main switch of the BMS control box is closed. The positive electrode pre-charging connector K1 and the negative electrode pre-charging connector K2 are electrically connected with the first interface to form a power supply path, and the positive electrode pre-charging connector and the negative electrode pre-charging connector are electrically connected with the first control board connector to form a control path to pre-charge a load capacitor of a circuit when a main switch of the BMS control box is closed according to a control signal of the BECU.

In this embodiment, the first main harness 01 further includes an I/O signal connector for receiving an I/O signal, the I/O signal connector electrically connected to the first control board connector BECU-P2 to form a control path.

In this embodiment, the first main harness 01 further includes a return inspection module, the return inspection module includes a fuse return inspection terminal and a breaker return inspection terminal, and the return inspection module is electrically connected to the first control board connector to return inspect the circuit according to the control signal of the BECU. It is understood that the fuse return terminal is used to connect the fuse and the circuit breaker return terminal is used to connect the circuit breaker. The fuse rechecking terminal comprises a first fuse rechecking terminal X-FU and a second fuse rechecking terminal G-FU, and the first fuse rechecking terminal X-FU and the second fuse rechecking terminal G-FU are connected with a first control board connector BECU-P2 in series to form a loop through wires. The circuit breaker return inspection terminal comprises a first circuit breaker return inspection terminal X-QL and a second circuit breaker return inspection terminal G-QL, and the first circuit breaker return inspection terminal X-QL and the second circuit breaker return inspection terminal G-QL are connected with the first control board connector BECU-P2 in series to form a loop through wires.

Because the inside pencil of BMS control box is communication, signal control and power distribution. Because the power pencil generally is greater than 110V, and voltage is higher, according to the wiring standard, high-voltage and low-voltage electric wire need separately walk the line, therefore this embodiment will be applicable to the communication and the signal control setting of low-voltage at first main pencil, will be applicable to highly compressed power distribution setting at second main pencil, and the reducible high-voltage power of high-low pressure beam splitting wiring is to the electromagnetic interference of communication signal and when making things convenient for troubleshooting, avoids high pressure, prevents to electrocute.

In the present embodiment, referring to fig. 3 and 4, the second main harness 02 includes a second POWER supply connector POWER connected to a POWER supply, a second interface ZJ2 connected to the first interface ZJ1, a second control board connector BECU-P1 connected to the battery electronic control unit, and a plurality of POWER distribution connectors.

In this embodiment, the second power connector is used to introduce a power supply voltage, which includes voltages of 24VDC and 220VAC with different values, so as to meet different power supply requirements.

In this embodiment, the second interface ZJ2 is used to establish a voltage transmission path between the first main harness and the second main harness, and when the power supply voltage is 24VDC, the voltage signal transmission between the first main harness and the second main harness can be directly realized through the second interface ZJ2 and the first interface ZJ 1.

In this embodiment, the second control board connector is used to supply power to the battery electronic control unit BECU, so that the BECU operates normally; the power distribution connector is used for distributing the power supply voltage to different electric devices so as to provide working voltages corresponding to the electric devices.

Referring to fig. 4, the power distribution connector includes a first distribution connector and a second distribution connector, a first terminal V1+ of the first distribution connector and a first terminal V1-of the second distribution connector for outputting a voltage of a first value, and a second terminal L1 of the first distribution connector and a second terminal N1 of the second distribution connector for outputting a voltage of a second value. For example, when the first value is 24, the first end V1+ of the first distribution connector is the 24V + connection end, and the first end V1-of the second distribution connector is the 24V-connection end. For another example, when the second value is 220, the second terminal L1 of the first distribution connector is a 220V power input, and the second terminal N1 of the second distribution connector is a 220V output.

In this embodiment, referring to fig. 3 and 4, the second main harness 02 further includes a switch connector for connecting a switch, an indicator lamp connector for connecting an indicator lamp, and a sensor connector VT1 for connecting a sensor, and the sensor connector VT1 is electrically connected to the second power connector. Wherein the switch connector includes a first switch terminal SW1 and a second switch terminal SW2, the indicator light connector includes a first indicator light terminal HY + and a second indicator light terminal HY-, and the sensor connector VT1 may connect a current hall sensor or a voltage hall sensor to receive current or voltage data detected by the sensor.

It can be understood that the operating voltage of the above switch connector, indicator lamp connector, sensor connector is 24V, and thus, when the power supply voltage is 24V, 24V + is connected to the connectors ZJ1, HY +, U2-IN, BECU-P1, VT1 through the wire harness from the first end V1+ of the first distribution connector; the 24V-from the first end V1-of the second distribution connector is connected by wire splits to the connectors ZJ1, HY-, U2-IN, BECU-P1, VT 1.

When the POWER supply voltage is 220V, the external 220V-L POWER input is connected from the second POWER connector POWER to the first switch terminal SW1 through a wire, and then from the second switch terminal SW2 to the second terminal L1 of the first distribution connector through a wire; the external 220V-N POWER input is connected by wires from the second POWER connector POWER to the second terminal N1 of the second distribution connector. As a result, the first switch terminal SW1 and the second switch terminal SW2 in the present embodiment are connected to an electric device, such as a motor, having a high voltage.

The power supply voltage of the embodiment comprises a first voltage and a second voltage, wherein the first voltage is less than the second voltage, and the first voltage corresponds to the working voltage of the first main wire harness; for example, the first voltage is 24V and the second voltage is 220V. In order to adapt to different situations, the second wire harness in the embodiment may have two structures, referring to fig. 3, when the power supply voltage is 24V, the second wire harness may directly output the voltage of 24V, that is, the power distribution connector is not needed to distribute the voltages with different values, so that the manufacturing cost of the second wire harness can be saved; however, referring to fig. 4, when the power supply voltage is 220V, the second wire harness includes a power distribution connector to connect different electric devices, so as to realize the targeted output of different numerical voltages.

In this embodiment, the second main harness is used for supplying power by transmitting an external power to each device in the BMS through the second power connector, the external power is 220VAC, 24VDC, and the like, and the current is large, so the connector in the second main harness is selected to be a connector capable of bearing a large current of more than 250V, and the main wire of the second main harness is selected to be 600V/2.5mm²The above electric wire.

In this embodiment, because the voltage of the second main harness is relatively large and the voltage of the first main harness is relatively small, when the power supply voltage is the second voltage, the second voltage needs to be converted by the voltage converter and then output to the outside through the first main harness. Correspondingly, the second main harness of the embodiment further includes a third interface U2-IN, the first main harness further includes a fourth interface U2-OUT, and a voltage converter is arranged between the third interface U2-IN and the fourth interface U2-OUT, and the voltage converter is configured to convert the second voltage into the first voltage required by the first harness when the power supply voltage is the second voltage.

In this embodiment, the sub-line bundle includes a sampling harness, and the sampling harness includes a sampling connector and a plurality of sampling probes, and the sampling connector is connected with the sub-line bundle connector, and the sampling probe is used for obtaining sampling data.

Further, the sub-harness may be a current sampling sub-harness, referring to fig. 5, the current sampling sub-harness includes a sampling connector CY-I2, a sampling probe TA1 and a sampling probe TA2, and the sampling probe TA1 and the sampling probe TA2 are respectively connected to two contacts of the sampling connector CY-I2 to form two sampling channels. The sampling probe TA1 and the sampling probe TA2 are used for sampling currents at the input end and the output end, and are low-current and low-voltage, so that the sampling connector CY-I2 adopts 24V low-current, and the electric wire adopts a 300V multi-core shielding wire to prevent interference.

Further, the sub-harness may be a voltage sampling sub-harness, referring to fig. 6, the voltage sampling sub-harness includes sampling connectors CY-V2 and sampling probes TV1 and TV2, and the sampling probes TV1 and TV2 are respectively connected to two contacts of the sampling connectors CY-V2 to form two sampling channels. The sampling probe TV1 and the sampling probe TV2 are used for sampling voltages at input and output ends, and are low-current and low-voltage, so that the sampling connector CY-V2 is used for sampling voltages at the input and output ends, 24V low-current is used, and a 300V multi-core shielded wire is used for preventing interference.

Further, the sub-wire bundle may be a temperature sampling sub-wire bundle, referring to fig. 7, the voltage sampling sub-wire bundle includes a sampling connector CY-T2, a sampling probe NTC1, a sampling probe NTC2 and a sampling probe NTC3, and the sampling probe NTC1, the sampling probe NTC2 and the sampling probe NTC3 are respectively connected to three contacts of the sampling connector CY-T2 to form three sampling channels. The sampling probe NTC1, the sampling probe NTC2 and the sampling probe NTC3 are used for sampling temperature in the control box and sampling resistance signals, and are low-current and low-voltage, so that the sampling connector CY-T2 selects 24V low-current.

In this embodiment, in order to implement the harness expansion function of this embodiment, the sub-harness further includes an expansion harness, the expansion harness includes an expansion connector and a plurality of expansion probes, and the plurality of expansion probes are connected to a contact of the expansion connector through a wire.

Specifically, referring to fig. 8, the expansion harness may include a FAN power supply expansion harness, that is, an expansion connector is a FAN connector FAN-B, and the expansion probe includes a first FAN probe FAN1, a second FAN probe FAN2, and a third FAN probe FAN 3. The FAN power supply expansion wiring harness is connected to one contact of the FAN connector FAN by the first FAN probe FAN1, the second FAN probe FAN2 and the third FAN probe FAN3, namely the first FAN probe FAN1, the second FAN probe FAN2 and the third FAN probe FAN3 are short-circuited at one end connected with the FAN connector FAN.

Referring to fig. 9, the expanded wiring harness further includes an I/O control expanded wiring harness, the I/O control expanded wiring harness includes an I/O connector I/O-A, and the expanded terminals include arc discharge detection signal terminals Y1+, Y1-, and high-voltage interlock signal terminals Y2+, Y2-, arc discharge detection signal terminals Y1+, Y1-, and high-voltage interlock signal terminals Y2+, Y2-which are respectively connected to the I/O connector I/O-A through wires.

The multifunctional expansion is realized by expanding the sub-wire bundles, the working condition can be adapted, the universality is strong, and the later-stage equipment function is convenient to upgrade.

It should be noted that, in this embodiment, the first interface ZJ1 and the second interface ZJ2, the load connector FAN-A and the FAN connector FAN-B, the voltage connector CY-V1 and the sampling connector CY-V2, the current connector CY-I1 and the sampling connector CY-I2, and the temperature connector CY-T1 and the sampling connector CY-T2 may be fittingly plugged, for example, the first interface ZJ1 is A male connector end, and the second interface ZJ2 is A female connector end.

The installation position of any connector of the combined wire harness in this embodiment is not limited to the installation positions shown in fig. 1 to 9, and can be set and expanded according to the actual situation, which is not described herein.

The following describes a combination manner of the combined wire harness according to the present embodiment, with reference to a specific application of the present embodiment in an actual scene.

In one possible embodiment, it is assumed that the requirements of the BMS control box include the use of a 24V auxiliary power supply, two current sampling, one voltage sampling, and a built-in fan heat sink. Then, referring to fig. 1, the corresponding combined wiring harness includes a first main wiring harness, a second main wiring harness, a current sampling wiring harness, and a voltage sampling wiring harness, wherein the second main wiring harness is connected with a power supply of 24VDC, and the wiring harness adopted by the second main wiring harness is a 24VDC power supply wiring harness.

In another possible embodiment, it is assumed that the requirements of the BMS control box include 220V power supply, two current sampling, one voltage sampling, three temperature sampling, one I/O control expansion line, and three fan cooling fans built therein. Then, the corresponding combined wiring harness comprises a first main wiring harness, a second main wiring harness, a current sampling wiring harness, a voltage sampling wiring harness, a temperature sampling wiring harness and an I/O control expansion wiring harness, similar to the BMS control box adopting 24V auxiliary power supply, and the sub-wiring harnesses are mutually inserted into connectors corresponding to the first main wiring harness, so that the combined wiring harness capable of realizing the functions can be combined. The power supply connected with the second main wiring harness is a 220VAC power supply, and the wiring harness adopted by the second main wiring harness is a 220VAC power supply wiring harness. Therefore, when the power supply voltage or the circuit requirement of the circuit is changed, the circuit can be changed only by changing the structure of the second wire harness or changing the number and the expansion type of the sub-wire harnesses, the design difficulty is greatly reduced, and the product upgrading can be completed quickly.

According to the combined wire harness provided by the embodiment of the utility model, the wire harnesses are classified and designed according to different high and low voltages and different functions according to different requirements of the BMS control box, wherein the first wire harness is a low-voltage wire harness and is used for realizing control and communication functions, the second wire harness is a high-voltage wire harness and is used for realizing power distribution, and the problems of high design difficulty, low adaptability and low assembly efficiency of the wire harness of the conventional BMS control box can be solved by adopting a wire-to-wire design mode. This embodiment adopts the mode of high-low pressure beam splitting wiring, can reduce high voltage power supply electromagnetic interference to communication signal on the one hand, and on the other hand when making things convenient for the troubleshooting, avoids high pressure, prevents to electrocute. Besides, the expansion of different functions can be realized by expanding the sub-wire bundles, and the adaptability is very strong.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the utility model have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the utility model, the scope of which is defined by the claims and their equivalents.

Claims (12)

1. A combined wire harness, characterized in that the combined wire harness includes a first main wire harness and a second main wire harness,

the first main wire harness comprises a first power connector connected with external communication equipment, and the first power connector is used for supplying power to the external communication equipment;

the first control board connector is connected with the battery electronic control unit and used for transmitting a control signal of the battery electronic control unit;

a first interface connected to the second main harness, the first interface being configured to establish a voltage transmission path between the first main harness and the second main harness; and

the sub-wire harness connector is connected with the sub-wire harness and is used for receiving the acquired data of the sub-wire harness;

the second main wire harness comprises a second power connector connected with a power supply, and the second power connector is used for introducing power supply voltage;

a second interface connected to the first interface, the second interface being configured to establish a voltage transmission path between the first main harness and the second main harness;

the second control board connector is connected with the battery electronic control unit and used for supplying power to the battery electronic control unit; and

the power distribution connectors are used for distributing the power supply voltage to different electric devices so as to provide working voltages corresponding to the electric devices.

2. The combination harness of claim 1, wherein the first main harness further comprises a load control connector,

the load control connector comprises a load driving connector connected in series with the first control board connector and the first interface, and the load driving connector is used for driving a load.

3. The combination harness of claim 2, wherein the load control connector further comprises a contactor connector connected to a contactor of the load, and the contactor connector is connected in series with the first control board connector and the first interface, the contactor connector for controlling the connection or disconnection of the load contactor;

wherein the contactor connector comprises a positive contactor connector and a negative contactor connector.

4. The combination harness of claim 1, wherein the first main harness further comprises a communication connector for connecting to an external controller, the communication connector being electrically connected to the first control board connector, the communication connector for transmitting data of the battery electronic control unit to the external controller.

5. The combination harness of claim 1, wherein the first main harness further comprises a pre-charge connector electrically connected to the first interface and the first control board connector, the pre-charge connector for controlling the load circuit in a pre-charge mode, wherein the pre-charge connector comprises a positive pre-charge connector and a negative pre-charge connector.

6. The combination harness of claim 1, wherein the first main harness further comprises an I/O signal connector for receiving an I/O signal, the I/O signal connector electrically connected with the first control board connector.

7. The combination harness of claim 1, wherein the first main harness further comprises a return test module, the return test module comprising a fuse return test terminal and a circuit breaker return test terminal, the return test module being electrically connected to the first control board connector.

8. The combination harness of claim 1, wherein the power distribution connector comprises a first distribution connector and a second distribution connector, a first end of the first distribution connector and a first end of the second distribution connector for outputting a first predetermined voltage, and a second end of the first distribution connector and a second end of the second distribution connector for outputting a second predetermined voltage.

9. The combination harness of claim 1, wherein the second main harness further comprises a switch connector for connecting a switch, an indicator light connector for connecting an indicator light, and a sensor connector for connecting a sensor, the switch connector, the indicator light connector, and the sensor connector being electrically connected with the second power connector.

10. The combination harness of claim 1, wherein the power supply voltage comprises a first voltage and a second voltage, the first voltage being less than the second voltage, wherein the first voltage corresponds to an operating voltage of the first main harness;

the second main wire harness further comprises a third interface, the first main wire harness further comprises a fourth interface, a voltage converter is arranged between the third interface and the fourth interface, and the voltage converter is used for converting the second voltage into the first voltage under the condition that the voltage of the power supply is the second voltage.

11. The combined beam of claim 1, wherein the sub-beams comprise sampling beams,

the sampling wire harness comprises a sampling connector and a plurality of sampling probes, the sampling probes are connected with the sampling connector, the sampling probes are used for acquiring sampling data, the sampling connector is connected with the sub-wire harness connector, and the sampling connector is used for transmitting the sampling data to the first main wire harness.

12. The combination harness of claim 1, wherein the sub-harness comprises an expansion harness,

the expansion wiring harness comprises an expansion connector and a plurality of expansion probes, the expansion probes are connected to one contact of the expansion connector through a lead, and the expansion connector is connected to a load driving connector or an I/O signal connector.

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