CN209870125U

CN209870125U - Terminal box and new energy automobile for new energy automobile

Info

Publication number: CN209870125U
Application number: CN201920248070.7U
Authority: CN
Inventors: 高万兵; 王坤; 徐浩然; 张奎星
Original assignee: Zhengzhou Yutong Bus Co Ltd
Current assignee: Yutong Bus Co Ltd
Priority date: 2019-02-27
Filing date: 2019-02-27
Publication date: 2019-12-31
Anticipated expiration: 2029-02-27

Abstract

The utility model relates to a new energy vehicle field, especially a terminal box and new energy automobile for new energy automobile. The junction box comprises a shell, a power port area is arranged on a first side face of the shell in a scribing mode, the first side face is a left side face, a right side face, a front side face or a rear side face of the shell, a battery port, an electric energy output port and a charging port are arranged in the power port area, the axial direction of each port in the power port area is parallel to the plane where the first side face is located, and the axial direction of each port in the power port area is perpendicular to the plane where the lower side face of the shell is located or the plane where the upper side face is located, so that a cable is connected with each port in a vertical direction, the cable cannot generate horizontal stress on a connector at the power port after the cable is connected with the power port, the phenomenon that the connector is loosened due to long-term use is avoided, the protection grade of the connector is improved, the high-voltage insulation performance is further improved, and the reliability.

Description

Terminal box and new energy automobile for new energy automobile

Technical Field

The utility model relates to a new energy vehicle field, especially a terminal box and new energy automobile for new energy automobile.

Background

Along with the continuous promotion of new forms of energy technique, [ electric ] motor coach battery system's configuration electric quantity is bigger and bigger, and the configuration of product is more and more various. Based on the requirement of driving range, the electric bus is configured with electric quantity from 85kWh to 500kWh, the configuration capacity is large, the coverage range is wide, based on the power requirement of the whole bus, the output interface is divided into single-loop output and double-loop output, and the charging mode is divided into single-charging gun charging, double-charging gun charging and pantograph charging. Meanwhile, in order to improve market competitiveness, parts of the whole vehicle are arranged more and more compactly, the size of each part is required to be smaller and smaller, and the requirement on the attractiveness of pipeline lines is higher and higher.

The chinese utility model patent document with the publication number CN205523719U discloses a distribution box, also called a junction box, which comprises a junction box body, a high voltage power supply part and a low voltage power supply part, wherein the high voltage power supply part comprises a high voltage port, the low voltage power supply part comprises a low voltage port, and the high voltage port and the low voltage port are arranged on different sides. The arrangement mode of each port on the junction box is as follows: running in a direction of extension perpendicular to the side to which it is fixed. Firstly, when the wiring, high-voltage line is more, and the voltage class is higher, when being connected the circuit with the port that corresponds, the circuit also sets up along the extension direction of arranging that corresponds the port, and occupation space is great, moreover, can produce certain horizontal stress to the connector of each port department, and long-term the use can reduce the protection level of connector, and then reduces high-voltage insulation performance, produces certain potential safety hazard.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a terminal box and new energy automobile for the new energy automobile for solve the power port on the terminal box and adopt the mode of laying along the extending direction of the fixed side of perpendicular to can reduce the problem of the protection level of port department connector when using for a long time.

In order to realize the integration of the distribution line, the problem that the protection level of a connector at a port is reduced when the power port on the junction box is used for a long time in a mode of being arranged along the extending direction vertical to the fixed side face is solved. The utility model provides a terminal box for new energy automobile, including the casing, draw on the first side of casing and be equipped with power port region, the first side is the left surface, the right flank, leading flank or the trailing flank of casing, be provided with in the power port region and be used for connecting power battery's battery port, be used for the power supply to connect relevant power equipment's electric energy output port and be used for the port of charging, the axial direction of each port in the power port region is on a parallel with first side place plane arrangement, just the axial direction perpendicular to casing's in the power port region downside place plane or the side place plane arrangement of going up.

The connector has the advantages that the power port area, namely the fixing plane of the power port, is the left side, the right side, the front side or the rear side of the junction box shell, the axial direction of each port is parallel to the plane of the side where the port is located, and the axial direction of each port is perpendicular to the plane of the lower side of the shell or the plane where the upper side of the shell is located, namely the ports are arranged in the vertical direction, so that the cable is connected with the ports in the vertical direction, horizontal stress generated by the cable after the cable is connected with the power port to the connector at the power port is avoided, the phenomenon that the connector is loosened due to long-term use is avoided, the protection grade of the connector is improved, the high-voltage insulation performance is further improved, and the.

Furthermore, the first side is the front side, each port in the power port area is arranged downwards, and because the whole vehicle high-voltage wiring is generally arranged on a vehicle chassis, each port is favorable for the wiring of cables and each port on the chassis downwards, the whole vehicle pipeline design is facilitated, and the difficulty in harness arrangement is reduced.

Further, the battery port includes positive pole battery port and negative pole battery port, the electric energy output port includes positive pole electric energy output port and negative pole electric energy output port, the port that charges includes anodal charging port and negative pole charging port, each port in the power port area arranges in proper order along the casing left and right sides direction, just the axis of each port in the power port area is in the coplanar. Seen from the front side, the ports are arranged along the left and right directions of the shell, the regularity of the ports is improved, the axes of the ports are located on the same plane, the thickness of the junction box, namely the distance between the front side and the rear side, is effectively reduced, the front and rear occupied spaces of the junction box are reduced, the space for passengers in a passenger car is increased, the installation space of a row of seats is increased, and meanwhile, the height space of the rear cabin of the whole car is effectively utilized.

Furthermore, the negative electrode battery port, the negative electrode electric energy output port, the negative electrode charging port, the positive electrode electric energy output port and the positive electrode battery port are sequentially arranged along the left and right directions of the shell, and the reverse connection of the positive electrode and the negative electrode caused by operation during installation is prevented according to a positive electrode and negative electrode centralized symmetrical design mode, and meanwhile, the attractiveness of the design of the wiring harness is improved.

Furthermore, in order to reasonably utilize the areas on the two sides of the power port area, the left side and the right side of the power port area are respectively provided with a heating port area and a cooling port area, the heating port area is provided with a heating port for supplying power and connecting external heating equipment, the cooling port area is provided with a cooling port for supplying power and connecting external cooling equipment, and the smaller heating port and the smaller cooling port are arranged in the cooling port area, so that the space can be effectively utilized.

Furtherly, for the convenience of high voltage transmission line maintenance, improve the circuit and overhaul the security, laid in the casing and be used for connecting the anodal electric energy transmission line of power battery and be used for connecting the negative pole electric energy transmission line of power battery negative pole, be provided with on the first side and be used for inserting and be in anodal manual maintenance switch on the anodal electric energy transmission line is in with being used for inserting the manual maintenance switch of negative pole on the negative pole electric energy transmission line.

Furthermore, in order to realize high-low pressure separation and reduce electromagnetic interference, a low-pressure port area is arranged on the second side face of the shell in a marking mode, a communication interface used for realizing communication signal transmission is arranged in the low-pressure port area, a side-mounted structural design is adopted, the front-back size of the box junction box is reduced, the space of passengers in a passenger car is increased, the mounting space of a row of seats is increased, and meanwhile the height space of the rear cabin of the whole car is effectively utilized.

Furthermore, in order to realize the functions of temperature detection, switch control and the like of each key electrical node in the high-voltage connection box, a positive charging line for connecting a positive charging port and a positive electric energy transmission line and a negative charging line for connecting a negative charging port and a negative electric energy transmission line are arranged in the shell, a positive charging contactor is arranged on the positive charging line in series, a negative charging contactor is arranged on the negative charging line in series, and control signals of the positive charging contactor and the negative charging contactor are transmitted by the communication interface; a current sensor is serially arranged on the positive electric energy transmission line, a temperature sensor is arranged at the position, close to the shell, of the positive manual maintenance switch, and collected signals of the current sensor and the temperature sensor are transmitted by the communication interface; heating contactor is equipped with on the heating line that is used for connecting the heating port in the casing in a string way, fuse and cooling contactor are equipped with on the cooling line that is used for connecting the cooling port in the casing in a string way, heating contactor and cooling contactor's control signal by communication interface transmits. The temperature sensors are designed near the positive and negative manual maintenance switches, so that the state of the manual maintenance switches can be monitored in real time, early warning can be performed in advance once faults occur, and the safety of drivers and passengers is improved. In addition, various electrical configurations are compatible in the single junction box, the diversified configuration requirements of the electric motor coach are met, the compatibility of products with single specifications is improved, the specification number of the junction box of the electric motor coach is reduced, the repeated design workload is reduced, the using amount of products with single specifications is increased, and the cost is reduced.

Further, in order to improve the fixing degree of the junction box, fixing mechanisms for fixedly mounting the junction box are arranged on the rear side and the lower side of the shell.

The utility model provides a new energy automobile, including automobile body and a terminal box, the terminal box includes the casing, draws on the first side of casing and is equipped with power port region, the first side is the left surface, the right flank, leading flank or the trailing flank of casing, be provided with in the power port region and be used for connecting power battery's battery port, be used for the power supply to connect the electric energy output port of relevant power equipment and be used for the port that charges, the axial direction of each port in the power port region is on a parallel with first side place plane is arranged, just the axial direction perpendicular to casing's in the power port region downside place plane or the side place plane is arranged on. Because the power port area, namely the fixing plane of the power port, is the left side, the right side, the front side or the rear side of the junction box shell, the axial direction of each port is parallel to the plane of the side where the port is located, and is perpendicular to the plane of the lower side of the shell or the plane of the upper side, when the cable is connected with each port, the cable can not generate horizontal stress on the connector at the power port after being connected with the power port, the phenomenon that the connector is loosened due to long-term use is avoided, the protection grade of the connector is improved, the high-voltage insulation performance is further improved, and the reliability is higher.

Furthermore, the first side face is a front side face, the ports in the area of the power port are arranged downwards, the front side face is a face observed from a current visual angle and is not limited to a specific face, and the whole vehicle high-voltage wiring is generally arranged on a vehicle chassis, so that the downward facing of the ports is beneficial to wiring of cables and the ports on the chassis, the design of a whole vehicle pipeline is facilitated, and the difficulty in arranging wiring harnesses is reduced.

Drawings

Fig. 1 is a front view of a junction box for a new energy automobile according to the present invention;

fig. 2 is a right side view of the junction box for a new energy automobile of the present invention;

fig. 3 is a schematic diagram of the internal circuit connection of the junction box for a new energy automobile according to the present invention;

in the figure, 1, power port; 2. a power port region; 3. a heating port; 4. a cooling port; 5. a first MSD; 6. a second MSD; 7. a communication interface; 8. a positive charging contact; 9. a negative charging contactor; 10. a current sensor; 11. heating the contactor; 12. cooling the contactor; 13. a DC/DC converter; 14. a fixed point.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Terminal box embodiments

The utility model provides a terminal box for new energy automobile, including the casing, the casing is hexahedron structure, and the casing includes front surface, trailing flank, left surface, right flank, top surface and downside, wherein, regard the face that observes at the present visual angle as the front surface, certainly, do not restrict that the front surface is a specific face; the power battery charging device comprises a shell, and is characterized in that a power port area is arranged on a first side face of the shell in a scribing mode, the first side face is a left side face, a right side face, a front side face or a rear side face of the shell, a battery port for connecting a power battery, an electric energy output port for supplying power to connect related power equipment and a charging port for charging are arranged in the power port area, the axial direction of each port in the power port area is parallel to the plane where the first side face is located, and the axial direction of each port in the power port area is perpendicular to the plane where the lower side face or the upper side face of the shell is located.

The power port area may be on the left, right, front or rear side, i.e. on any non-horizontal plane, i.e. the plane on which the upper or lower side lies. In the working process of the junction box, the plane where the upper side face or the lower side face is located is parallel to the horizontal plane in a normal state, and the other planes are non-horizontal planes. The axial direction of each port in the power port area is parallel to the plane of the side face and is perpendicular to the plane of the lower side face or the upper side face of the shell, namely, each port is in a vertical state.

The orientation of each port only has two kinds of circumstances, one is vertical up, one is vertical down, because whole car power cable generally walks the line in the chassis, and the terminal box generally sets up in the chassis top, consequently for the convenience of being connected of cable and each port, the utility model discloses use each port to describe for example down the arrangement.

As shown in fig. 1, a front view of a junction box for a new energy vehicle is shown, a surface directly viewed from a front view is a front side surface of a housing, and the first side surface is a front side surface. The utility model provides a battery port, electric energy output port and charging port are power port 1, and power port 1 constitutes power port region 2 in the region on the leading flank.

The battery ports include a positive battery port and a negative battery port, the power output ports include a positive power output port and a negative power output port, the charging ports include a positive charging port and a negative charging port, as shown in fig. 1, the positive battery port corresponds to the total positive of the battery in fig. 1, the negative battery port corresponds to the total negative of the battery in fig. 1, the positive power output port corresponds to the positive of the main loop in fig. 1, the negative power output port corresponds to the negative of the main loop in fig. 1, the positive charging port corresponds to the positive of the charge in fig. 1, and the negative charging port corresponds to the negative of the charge in fig. 1.

The ports in the power port area 2 are sequentially arranged along the left-right direction of the housing, and the axes of the ports in the power port area 2 are on the same plane, as shown in fig. 2, which is a right view of the junction box for the new energy automobile.

As shown in fig. 1, the utility model adopts the mode that the negative electrode battery port is the battery total negative, the negative electrode electric energy output port is the main loop negative, the negative electrode charging port is the charging negative, the positive electrode charging port is the charging positive, the positive electrode electric energy output port is the main loop positive and the positive electrode battery port is the battery total positive, which are arranged in sequence along the left and right direction of the shell; the number of the negative electrode battery ports is two, the number of the negative electrode electric energy output ports is one, the number of the negative electrode charging ports is two, the number of the positive electrode electric energy output ports is one, and the number of the positive electrode battery ports is two. According to the design mode of the positive electrode and the negative electrode in a centralized and symmetrical mode, the reverse connection of the positive electrode and the negative electrode caused by operation during installation is prevented, and meanwhile, the attractiveness of the wire harness design is improved. Each port in the power port 1 adopts a metal flange head with a 360-degree shielding function, an electric connection point adopts a bolt connection mode, and the gap between the two metal flange heads is smaller than 20 mm.

As shown in fig. 2, the height of the lowermost end of each port in the power port region 2 is not lower than the height of the lower side of the housing. As shown in fig. 2, it can be seen that each port in the power port region 2 is disposed proud of the front side, which does not occupy space within the housing and facilitates connection of cables to each port.

A heating port area and a cooling port area are respectively arranged on the left side and the right side of the power port area 2 on the front side surface, the heating port area is provided with a heating port formed by a heating positive electrode and a heating negative electrode which are electrically connected with external heating equipment, and the cooling port is provided with a cooling port formed by a cooling positive electrode and a cooling negative electrode which are electrically connected with external cooling equipment; the heating port area can be a positive electrode or a negative electrode, and the cooling port area can be a negative electrode or a positive electrode; as shown in fig. 1, a heating port 3 for supplying power to connect with an external heating device may be provided in the heating port region, a cooling port 4 for supplying power to connect with an external cooling device may be provided in the cooling port region, and a plurality of ports are vertically arranged, so that a smaller heating port 3 and cooling port 4 are provided therein, which may effectively utilize space, and may also heat the positive electrode and cool the positive electrode at one side of the power port region 2, and heat the negative electrode and cool the negative electrode at the other side of the power port region 2. An external heating device, such as a heating plate, for heating the power battery, the battery pack, and the like; and the external cooling equipment, such as a cooling unit, is used for cooling the power battery, the battery pack and the like. The heating port 3 and the cooling port 4 adopt multi-core 360-degree shielding functional connectors to respectively supply power to a heating plate of the battery system and an independent water cooling unit of the battery system.

As shown in fig. 1, the utility model discloses a laid the anodal positive pole electric energy transmission line that is used for connecting the power battery positive pole in the casing and be used for connecting the negative pole electric energy transmission line of power battery negative pole, be provided with on the leading flank and be used for inserting first MSD 5 of anodal manual maintenance switch on anodal electric energy transmission line promptly and be used for inserting second MSD 6 of negative pole manual maintenance switch on negative pole electric energy transmission line. The MSD is mainly used for short-circuit protection, rapid replacement of a fuse after short-circuit protection, disconnection of a main loop during detection and maintenance of a battery system, and the MSD is provided with a high-voltage interlocking loop and a temperature detection point, so that the connection reliability of the MSD is effectively ensured. A first MSD 5 and a second MSD 6 are arranged above the power port 1, and are designed in a bilateral symmetry mode by taking the central line of the front side face of the junction box as a reference, the two MSDs are compatible with configuration states of positive electrodes in parallel connection, negative electrodes in parallel connection, one positive electrode and one negative electrode respectively, and configuration requirements of a whole vehicle battery system are met; the MSD two sides design enterprise LOGO, warning identification and labels and the like according to needs.

As shown in fig. 2, a low-voltage port area is scribed on the second side surface, i.e., the right side surface, of the housing, and a communication interface 7 for realizing communication signal transmission is arranged in the low-voltage port area. It can be seen that the low-pressure port area is partitioned from the high-pressure parts such as the power port 1, the heating port 3 and the cooling port 4, and the safety during installation and maintenance can be improved due to the design of the partitioned areas.

As shown in fig. 3, the internal line of terminal box for the new energy automobile connects the sketch map, the utility model discloses a laid in the casing and be used for connecting anodal charging line of anodal port and the anodal electric energy transmission line of charging and be used for connecting the negative pole charging line of negative pole port and negative pole electric energy transmission line, the cluster is equipped with anodal charging contactor 8 on the anodal charging line, and the cluster is equipped with negative pole charging contactor 9 on the negative pole charging line, and the control signal of anodal charging contactor 8 and negative pole charging contactor 9 is transmitted by communication interface 7.

The positive electric energy transmission line is provided with the current sensor 10 in series, the positive manual maintenance switch, namely the position of the first MSD 5 close to the shell is provided with the temperature sensor, the collected signals of the current sensor 10 and the temperature sensor are transmitted by the communication interface 7, wherein the temperature sensor is used for carrying out temperature detection on the manual maintenance switch MSD, the detected signals are transmitted to the main controller, the state of the MSD can be monitored in real time, and once a fault occurs, a fault alarm can be sent out through the whole vehicle controller in advance, so that the safety of drivers and passengers is improved.

As shown in fig. 3, a FUSE (FUSE) and a heating contactor 11 are connected in series to a heating line for connecting the heating port 3 in the housing, and the FUSE and the heating contactor 11 constitute a heating control unit. A FUSE (FUSE) and a cooling contactor 12 are connected in series to a cooling line for connecting the cooling port 4 in the housing, and the FUSE and the cooling contactor 12 constitute a cooling unit control unit. Control signals of the heating contactor 11 and the cooling contactor 12 are transmitted by the communication interface 7, and communication and control with the heating control unit and the cooling unit control unit are realized.

In summary, as shown in fig. 3, the junction box includes related wiring ports, a high voltage detection, a DC/DC converter 13, manual maintenance switches, i.e., a first MSD 5 and a second MSD 6, a current sensor 10, a heating control unit, a charging control unit, a water chiller unit control unit, and the like; the related wiring ports comprise a power port, a water cooling unit power supply port, namely a cooling port 4, a heating port 3, a communication port 7, a control interface and a low-voltage power supply port of a DC/DC converter 13. As shown in fig. 3, the DC/DC converter 13 is provided on the upper side surface of the terminal box case, but may alternatively be built in the terminal box.

The high-voltage detection is mainly used for main loop voltage detection, current detection, insulation detection and contactor adhesion fault detection; the DC/DC converter 13 is mainly used for supplying power to a high-voltage detection system, a main controller, a contactor and other low-voltage systems of a battery system; the current sensor 10 is used for detecting the current of each branch circuit of the battery system, and each battery branch circuit is configured with one current sensor; the water cooling unit control unit and the heating control unit are controlled by the main controller; the charging control unit comprises a positive charging contactor 8, a negative charging contactor 9, a first MSD 5 and a second MSD 6, the positive electrode and the negative electrode of each charging loop are respectively provided with a contactor, and the control is realized by the main controller.

As shown in fig. 3, a battery port in the power port 1 is used for connecting with a battery pack, and according to the design of three battery pack branches, a branch, two branches and three branches can be selectively configured according to the requirement of the electric quantity of the whole vehicle; the motor controller interface is used for being connected with a motor controller, and one branch and two branches can be selectively configured according to the design of the two branches and the power consumption requirement of the electric control system of the whole vehicle; the charging port is used for being connected with charging equipment, and according to the design of the two branches, a single charging gun charging mode, a double charging gun charging mode and a single charging gun + pantograph charging mode can be selected according to the requirements of the charging power and the charging mode of the whole vehicle.

The rear side and the lower side of the housing are provided with fixing means for fixedly mounting the junction box, and, as shown in fig. 1, fixing points 14 are provided on the left and right sides of the housing, respectively.

The utility model discloses an entire system adopts compatible design structure, 10 power ports of preferred design, every port rated current 250 ~ 300A, two ports of every electric circuit configuration can satisfy the user demand in 5 electric circuit, and main compatible configuration is as follows:

configuring a first step: a branch battery pack and a power output single gun are charged;

configuring a second step: a branch battery pack and a power output double-gun charging;

the configuration is three: a branch battery pack, a power output single gun charging and pantograph charging;

and (4) configuration four: two branch battery packs and a power output single gun are charged;

and configuration five: two-branch battery pack and one power output double-gun charging;

configuration six: two branch battery packs, one power output single gun charging and pantograph charging;

the configuration is seven: charging the battery pack with two branches and the single gun with two power outputs;

eight configurations: three branch batteries, a power output single gun charge.

Meanwhile, the requirements of various local standards can be met, for example, a manual maintenance switch is respectively arranged on the anode and the cathode of the main circuit, and other configurations are expanded according to requirements.

The power port 1 is designed according to the concentrated zoning of the positive electrode and the negative electrode, the negative electrode on the left side and the positive electrode on the right side, the arrangement order is preferably selected from the group consisting of total negative (3) of the battery, total negative (2) of the battery, total negative (1) of the battery, negative (2) of the main loop, negative (1) of the main loop, negative (3) of the charging, negative (1) of the charging, positive (2) of the charging, positive (1) of the main loop, positive (2) of the battery, total positive (3) of the battery, total negative (2) of the battery, total negative (1) of the battery, negative (3) of the charging, negative (2) of the charging, negative (1) of the main loop, positive (2) of the main loop, positive (1) of the charging, positive (2) of the charging, Charging is positive (3), the battery is always positive (1), the battery is always positive (2), the battery is always positive (3) two kinds of modes, select for use corresponding interface according to actual demand. The preferred power interface arrangement order of the different configurations, the first way, as shown in table 1, and the second way, as shown in table 2.

TABLE 1

TABLE 2

Vehicle embodiment

The utility model provides a new energy automobile, including car body and a terminal box, this terminal box has specifically explained in above-mentioned terminal box embodiment, and no longer the repeated description in this vehicle embodiment.

The present invention has been described with reference to specific embodiments, but the present invention is not limited to the described embodiments. The technical means in the above embodiments are changed, replaced, modified in a manner that is easily imaginable to those skilled in the art, and the functions of the technical means are basically the same as those of the present invention, and the purpose of the present invention is also basically the same, so that the technical solution formed by fine tuning the above embodiments still falls into the protection scope of the present invention.

Claims

1. The utility model provides a terminal box for new energy automobile, includes the casing, scribes on the first side of casing and is equipped with power port area, first side is the left surface of casing, right flank, front flank or trailing flank, be provided with the battery port that is used for connecting power battery in the power port area, be used for supplying power to connect the electric energy output port of relevant power equipment and be used for the charging port who charges, its characterized in that, the axial direction of each port in the power port area is on a parallel with first side place plane arrangement, just the axial direction of each port in the power port area is perpendicular to the plane of the downside place of casing or the plane arrangement of side place on.

2. The junction box for a new energy automobile as claimed in claim 1, wherein the first side face is a front side face, and each port in the power port region is arranged downward.

3. The junction box for the new energy automobile as claimed in claim 2, wherein the battery ports include a positive battery port and a negative battery port, the power output port includes a positive power output port and a negative power output port, the charging port includes a positive charging port and a negative charging port, the ports in the power port region are sequentially arranged in a left-right direction of the housing, and axes of the ports in the power port region are on the same plane.

4. The junction box for the new energy automobile as claimed in claim 3, wherein the negative battery port, the negative power output port, the negative charging port, the positive power output port, and the positive battery port are arranged in this order along a left-right direction of the case.

5. The junction box for the new energy automobile as claimed in claim 1 or 2, wherein a heating port area and a cooling port area are respectively provided on left and right sides of the power port area, a heating port for electrically connecting an external heating device is provided in the heating port area, and a cooling port for electrically connecting an external cooling device is provided in the cooling port area.

6. The junction box for the new energy automobile as claimed in claim 5, wherein a positive power transmission line for connecting a positive electrode of the power battery and a negative power transmission line for connecting a negative electrode of the power battery are arranged in the housing, and a positive manual maintenance switch for connecting to the positive power transmission line and a negative manual maintenance switch for connecting to the negative power transmission line are arranged on the first side surface.

7. The junction box for the new energy automobile as claimed in claim 6, wherein a low voltage port area is scribed on the second side surface of the housing, and a communication interface for realizing communication signal transmission is arranged in the low voltage port area.

8. The junction box for the new energy automobile as claimed in claim 7, wherein a positive charging line for connecting a positive charging port and a positive electric energy transmission line and a negative charging line for connecting a negative charging port and a negative electric energy transmission line are arranged in the housing, a positive charging contactor is arranged on the positive charging line in series, a negative charging contactor is arranged on the negative charging line in series, and control signals of the positive charging contactor and the negative charging contactor are transmitted by the communication interface; a current sensor is serially arranged on the positive electric energy transmission line, a temperature sensor is arranged at the position, close to the shell, of the positive manual maintenance switch, and collected signals of the current sensor and the temperature sensor are transmitted by the communication interface; heating contactor is equipped with on the heating line that is used for connecting the heating port in the casing in a string way, fuse and cooling contactor are equipped with on the cooling line that is used for connecting the cooling port in the casing in a string way, heating contactor and cooling contactor's control signal by communication interface transmits.

9. The junction box for a new energy automobile as claimed in claim 2, wherein fixing mechanisms for fixedly mounting the junction box are provided on the rear side and the lower side of the housing.

10. A new energy automobile, which comprises an automobile body and a junction box, and is characterized in that the junction box is the junction box for the new energy automobile in any one of claims 1-9.