CN220009468U - Distribution box and new energy vehicle - Google Patents

Abstract

The utility model discloses a block terminal and new energy vehicle, block terminal include the block terminal body, and the block terminal body includes low voltage isolation control district and high voltage isolation distribution district, and low voltage isolation control district is provided with low voltage control board, low voltage control pencil and high voltage monitoring pencil, and high voltage isolation distribution district is provided with relay, copper bar and high voltage connector interface, copper bar connection high voltage connector interface and relay constitute high voltage power supply circuit, and low voltage control board passes through low voltage control pencil and is connected with the relay, low voltage control board pass through high voltage monitoring pencil with high voltage power supply circuit is connected, and low voltage control board is configured to control according to the voltage value of the high voltage power supply circuit that obtains via high voltage monitoring pencil the switch-on and the closure of relay. According to the distribution box, the high voltage and the low voltage are isolated, so that the mutual interference between the high voltage and the low voltage is reduced, and the safety of the whole vehicle is improved; and the control relay is directly communicated with the high-voltage power supply loop, so that the structural design of the high-voltage loop is simplified.

Description

Distribution box and new energy vehicle

Technical Field

The present disclosure relates to the field of automotive electronic circuits, and more particularly, to a power distribution box and a new energy vehicle.

Background

The novel energy automobile distribution box has the main function of being used as a control and monitoring node of a high-voltage electric framework to exist in an entire automobile electric system. All high-voltage power utilization components can be connected in a complete electrical system through connection of a high-voltage distribution box, and the high-voltage power utilization components are reasonably distributed to all high-voltage power utilization devices according to the use requirement of a whole vehicle power supply. The high-voltage distribution box mainly has the functions of high-voltage distribution, low-voltage control and the like, and the distribution box with more application in the market at present is integrated in the same unit space for high voltage and low voltage, so that the high-voltage distribution box possibly has potential electrical safety hazards and mutual interference between high voltage and low voltage, thereby influencing the safety of the whole vehicle.

Disclosure of Invention

The first aspect provides a block terminal for quick-charging distribution system of new energy vehicle, its characterized in that includes the block terminal body, the block terminal body includes low voltage isolation control district and high voltage isolation distribution district, low voltage isolation control district is provided with low voltage control board, low voltage control pencil and high voltage monitoring pencil, high voltage isolation distribution district is provided with relay, copper bar and high voltage connector interface, the copper bar is connected high voltage connector interface with the relay constitutes high voltage power supply loop, low voltage control board passes through low voltage control pencil with the relay is connected, low voltage control board passes through high voltage monitoring pencil with high voltage power supply loop is connected, low voltage control board is configured to control opening and closing of relay according to the voltage value of the high voltage power supply loop that obtains through high voltage monitoring pencil.

Preferably, the low-voltage isolation control area further comprises a CAN communication interface, and the low-voltage control board is configured to be in communication connection with a vehicle end through the CAN communication interface.

Preferably, the high-voltage power supply circuit is configured to supply direct current to a vehicle-end whole vehicle controller and a vehicle-end battery via the high-voltage connector interface.

Preferably, the high-voltage isolation power distribution area is further provided with a temperature sensor, and the low-voltage control board is further configured to control the opening and closing of the relay according to a temperature signal acquired by the temperature sensor.

Preferably, a partition plate is arranged in the distribution box body, the partition plate divides the distribution box body into a low-voltage isolation control area and a high-voltage isolation distribution area which are independent, and a wiring groove for the low-voltage control wiring harness and the high-voltage monitoring wiring harness to pass through is arranged on the partition plate.

Preferably, the outer surface of the distribution box body corresponding to the low-voltage isolation control area is provided with a heat dissipation rib.

Preferably, the distribution box body is provided with an upper cover and a lower shell which are detachably connected, and a sealing structure is arranged between the upper cover and the lower shell.

Preferably, the upper cover is further provided with a ventilation valve.

Preferably, the high voltage connector interface at least comprises a battery interface, an MCU interface, a fast charge interface, a slow charge interface and a DCDC interface.

Another aspect provides a new energy vehicle comprising a power distribution box as in any one of the embodiments above.

According to the distribution box and the new energy vehicle, the distribution box separates high voltage from low voltage, so that mutual interference between the high voltage and the low voltage is reduced, and the safety of the whole vehicle is improved; and the relay is controlled by the low-voltage control board to be directly communicated with the high-voltage power supply loop, so that the structural design of the high-voltage loop is simplified.

Other features of the present utility model and its advantages will become apparent from the following detailed description of exemplary embodiments of the utility model, which proceeds with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description, serve to explain the principles of the utility model.

Fig. 1 is an exploded perspective view of a distribution box according to a preferred embodiment of the present utility model;

fig. 2 is a schematic view of the internal structure of the distribution box of fig. 1;

FIG. 3 is a schematic diagram of a block terminal body of the block terminal of FIG. 1;

fig. 4 is a perspective view of the distribution box of fig. 1.

The figures are marked as follows:

100-a distribution box; 10-a distribution box body; 101-a spacer plate; 102-wiring grooves; 103-heat dissipating ribs; 104-upper cover; 105-a lower housing; 106-sealing structure; 107-ventilation valve; 11-a low voltage isolation control zone; 111-a low voltage control board; 112-low voltage control harness; 113-high voltage monitoring harness; 114-CAN communication interface; 12-high voltage isolation distribution area; 121-a relay; 122-copper bars; 123-high voltage connector interface.

Detailed Description

Various exemplary embodiments of the present utility model will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present utility model unless it is specifically stated otherwise.

The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the utility model, its application, or uses.

Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate.

In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of exemplary embodiments may have different values.

As shown in fig. 1 to 4, there is provided a distribution box 100 for a quick-charging distribution system of a new energy vehicle, including a distribution box body 10, the distribution box body 10 including a low-voltage isolation control area 11 and a high-voltage isolation distribution area 12, the low-voltage isolation control area 11 being provided with a low-voltage control board 111, a low-voltage control harness 112 and a high-voltage monitoring harness 113, the high-voltage isolation distribution area 12 being provided with a relay 121, a copper bar 122 and a high-voltage connector interface 123, the copper bar 122 connecting the high-voltage connector interface 123 and the relay 121 to form a high-voltage power supply loop, the low-voltage control board 111 being connected with the relay 121 through the low-voltage control harness 112, the low-voltage control board 111 being connected with the high-voltage power supply loop through the high-voltage monitoring harness 113, the low-voltage control board 111 being configured to control opening and closing of the relay 121 according to a voltage value of the high-voltage power supply loop acquired via the high-voltage monitoring harness 113.

Specifically, the low-voltage control board 111 is composed of a main control chip, a power conversion chip, a CAN communication chip and peripheral circuits (electronic devices such as resistors and capacitors), the signal acquisition CAN be achieved through sensors or acquisition circuits arranged at each acquisition point, the signals are transmitted to the main control chip through the peripheral circuits, the main control chip performs corresponding execution actions according to the acquired information, the main control chip CAN transmit the acquired information and fault information which is judged to be generated according to abnormal acquired information to other controllers such as a vehicle-end vehicle controller, an instrument and the like through a bus, and the signals transmitted by the vehicle-end vehicle controller or other external switches CAN be received to perform corresponding execution actions.

Therefore, the distribution box 100 is provided with the low-voltage isolation control area 11 and the high-voltage isolation distribution area 12, so that high and low voltages are isolated, mutual interference between the high and low voltages is reduced, and the safety of the whole vehicle is improved; and the control relay 121 is directly communicated with the high-voltage power supply loop, so that the structural design of the high-voltage loop is simplified.

In some embodiments, as shown in fig. 2, the low-voltage isolation control area 11 further includes a CAN communication interface 114, and the low-voltage control board 111 is configured to be communicatively connected to a vehicle end through the CAN communication interface 114. In practice, the distribution box 100 may receive or feed back related control instructions through the CAN communication interface 114.

The low-voltage control board 111 communicates with the vehicle-end whole vehicle controller through the CAN communication interface 114 and the CAN bus, so that the on-off of the relay 121 CAN be directly controlled, and the CAN bus has good anti-interference performance, good stability and high transmission rate.

In some embodiments, the high voltage power circuit is configured to supply direct current to the vehicle-side vehicle controller and the vehicle-side battery via the high voltage connector interface 123. It will be appreciated that the high voltage isolated power distribution section 12 is configured to receive external direct current (power from the dc charging post) via the high voltage connector interface 123 and supply the direct current to the vehicle-side battery and the vehicle-side vehicle controller. Thus, the high-voltage power supply can be reasonably distributed to the respective power utilization units. Specifically, in some embodiments, the high voltage connector interface 123 includes at least a battery interface, an MCU interface, a fast charge interface, a slow charge interface, and a DCDC interface. It can be understood that the high-voltage power supply circuit can realize functions of slow charging, fast charging, supplying power to the low-voltage control panel 111 or the vehicle-end whole vehicle controller, transmitting detection signals and the like through different interfaces.

In some embodiments, the high-voltage isolation power distribution area 12 is further provided with a temperature sensor (not shown in the figure), and the low-voltage control board 111 is further configured to control the opening and closing of the relay 121 according to a temperature signal collected by the temperature sensor. In practical applications, the temperature sensor may be configured to collect the space temperature of the high-voltage isolated power distribution area 12, or may be configured to collect the temperature of the cable or the copper bar 122 in the high-voltage power supply circuit, so that when the temperature is higher than a set threshold, the low-voltage control board 111 may control the relay 121 to be turned off, so as to control the high-voltage power to stop supplying power to the vehicle-side battery or the like at the later stage.

In some embodiments, each power supply branch of the high-voltage power supply loop may be connected with a fuse, and the fusing current of the fuse is matched with that of the external device; if the current caused by the equipment fault is too large and exceeds the safety current of the external equipment, the fuse on the corresponding loop will burn out, the current will not flow into the external equipment, and the external equipment is prevented from being burned out.

It will be appreciated that the main circuit of the distribution box 100 may be provided with a current sensor (not shown) accordingly; the current sensor is used for detecting charge and discharge current, so as to control and manage the distribution box 100 conveniently and perform multiple safety protection.

In some embodiments, as shown in fig. 1 and 3, a partition board 101 is disposed in the distribution box body 10, the partition board 101 partitions the distribution box body 10 into the low voltage isolation control area 11 and the high voltage isolation distribution area 12, and a wiring groove 102 through which the low voltage control harness 112 and the high voltage monitoring harness 113 pass is disposed on the partition board 101. From this, the block terminal 100 has set up high low voltage subregion to high low voltage pencil can be arranged through wiring groove 102, has standardized the wiring in the block terminal 100, has saved the installation space in the block terminal 100.

In some embodiments, the outer surface of the distribution box body 10 corresponding to the low voltage isolation control zone 11 is provided with heat dissipating ribs 103. Thereby, the low-voltage isolation control region 11 is facilitated to radiate heat through the heat radiation ribs 103, thereby avoiding the low-voltage control panel 111 in the low-voltage isolation control region 11 from being damaged due to high temperature. Specifically, as shown in fig. 4, the heat dissipation rib 103 may be configured to directly open a formed through groove on the outer surface of the distribution box body 10.

In some embodiments, as shown in fig. 1, the distribution box body 10 has an upper cover 104 and a lower housing 105 that are detachably connected, and a sealing structure 106 is disposed between the upper cover 104 and the lower housing 105. The sealing structure 106 may be specifically configured as a sealing ring as shown in fig. 1. Therefore, the distribution box 100 has the functions of dust prevention and water prevention, and the service life of the distribution box 100 is prolonged.

In some embodiments, as shown in fig. 1, the upper cover 104 is further provided with a breather valve 107. Thus, the distribution box 100 has the functions of heat dissipation and pressure difference balancing. In some embodiments, the power distribution box 100 may also be provided with a maintenance window to facilitate an operator in detecting and maintaining a power distribution box fault.

Another aspect herein provides a new energy vehicle comprising the electrical box 100 of any of the above embodiments.

According to the distribution box 100 and the new energy vehicle, the high voltage and the low voltage are isolated by the partition design of the distribution box 100, so that the mutual interference between the high voltage and the low voltage is reduced, and the safety of the whole vehicle is improved; and the control relay 121 is directly communicated with the high-voltage power supply loop, so that the structural design of the high-voltage loop is simplified.

While certain specific embodiments of the utility model have been described in detail by way of example, it will be appreciated by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the utility model. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the utility model. The scope of the utility model is defined by the appended claims.

Claims (10)

1. The utility model provides a block terminal for quick charge distribution system of new energy vehicle, its characterized in that, includes the block terminal body, the block terminal body includes low pressure isolation control district and high voltage isolation distribution district, low pressure isolation control district is provided with low pressure control board, low pressure control pencil and high pressure monitoring pencil, high pressure isolation distribution district is provided with relay, copper bar and high voltage connector interface, the copper bar is connected high voltage connector interface with the relay constitutes high voltage power supply loop, low pressure control board passes through low pressure control pencil with the relay is connected, low pressure control board passes through high pressure monitoring pencil with high voltage power supply loop is connected, low pressure control board is configured to control according to the voltage value of the high voltage power supply loop that obtains via high pressure monitoring pencil the opening and closure of relay.

2. The electrical box of claim 1, wherein the low voltage isolation control zone further comprises a CAN communication interface, the low voltage controller being configured to communicatively connect with a vehicle end through the CAN communication interface.

3. The electrical box of claim 1, wherein the high voltage power supply loop is configured to supply direct current to a vehicle-side vehicle controller and a vehicle-side battery via the high voltage connector interface.

4. The electrical box of claim 1, wherein the high voltage isolated power distribution area is further provided with a temperature sensor, and the low voltage controller is further configured to control opening and closing of the relay according to a temperature signal collected by the temperature sensor.

5. The electrical box of claim 1, wherein a spacer plate is disposed in the electrical box body, the spacer plate dividing the electrical box body into the low voltage isolation control area and the high voltage isolation distribution area, the spacer plate being provided with a wiring groove for the low voltage control harness and the high voltage monitoring harness to pass through.

6. The electrical box of claim 1, wherein an outer surface of the electrical box body corresponding to the low voltage isolation control zone is provided with heat dissipating ribs.

7. The electrical box of claim 1, wherein the electrical box body has a removably connected upper cover and lower housing, and a sealing structure is provided between the upper cover and the lower housing.

8. The electrical box of claim 7, wherein the upper cover is further provided with a ventilation valve.

9. The electrical box of claim 1, wherein the high voltage connector interface comprises at least a battery interface, an MCU interface, a fast charge interface, a slow charge interface, and a DCDC interface.

10. A new energy vehicle characterized by comprising the power distribution box according to any one of claims 1 to 9.