CN206480722U - Integrated BDU for power battery pack and power battery pack with it - Google Patents

Abstract

The utility model discloses an integrated form BDU and power battery package that has it for power battery package, integrated form BDU includes the casing, the PCB circuit board, high-pressure connector, low pressure connector and a plurality of battery termination plug-in components, be equipped with the relay in the casing, sensor and pre-charge resistance, the PCB circuit board is fixed in the upper end of casing and is at least partly coved the casing, be equipped with pencil interface and/or grafting interface on the PCB circuit board, high pressure connector and low pressure connector all set up on the casing, be connected with between low pressure connector and the pencil interface and pencil or low pressure connector and the grafting interface between be connected with the plug connector. According to the utility model discloses integrated form BDU has reduced the tie point of BDU and power battery package interior battery module, has promoted BDU's operational reliability, has promoted the inside space utilization of power battery package simultaneously, has promoted the assembly efficiency of power battery package.

Description

Integrated BDU for power battery pack and power battery pack with it

technical field

The utility model relates to the technical field of batteries, in particular to an integrated BDU for a power battery pack and a power battery pack with the same.

Background technique

In related technologies, the BDU (Battery Disconnect Unit, Chinese full name: battery disconnect unit) of the power battery pack has relays, sensors and other components scattered in the power battery pack, so the assembly of the BDU is complicated and occupies the interior of the power battery pack. More space, at the same time, many devices in the BDU need to be connected to the battery module, and there are more connection points, which increases the risk that the BDU will not work due to an open circuit. In addition, the scattered installation of BDU components cannot standardize the installation and production of power battery packs.

Utility model content

The utility model aims to solve one of the technical problems in the related art at least to a certain extent. For this reason, the first aspect of the utility model proposes an integrated BDU that can improve the space utilization rate inside the power battery pack at least to a certain extent.

The second aspect of the utility model proposes a power battery pack with the above-mentioned integrated BDU.

According to the integrated BDU described in the first aspect of the utility model, it includes a housing, a PCB circuit board, a high-voltage connector, a low-voltage connector, and a plurality of battery terminal connectors, and a relay, a sensor, and a pre-charging resistor are arranged in the housing. , the PCB circuit board is fixed on the upper end of the housing and at least partially covers the housing, the PCB circuit board is provided with a harness interface and/or a plug interface, the high-voltage connector and the low-voltage The connectors are all arranged on the housing, and a wire harness is connected between the low-voltage connector and the wire harness interface or a plug connector is connected between the low-voltage connector and the plug-in interface.

According to the integrated BDU described in the first aspect of the utility model, the connection points between the BDU and the battery module in the power battery pack are reduced, the working reliability of the BDU is improved, and the space utilization rate inside the power battery pack is improved, and the Improve the assembly efficiency of the power battery pack.

In addition, the above-mentioned integrated BDU according to the utility model can also have the following additional technical features:

Preferably, both the high voltage connector and the low voltage connector are arranged on the same side of the housing.

Preferably, the battery terminal connectors include positive and negative pole connectors and battery low-voltage connectors, the battery low-voltage connectors are installed on the PCB circuit board, and the positive and negative pole connectors are installed on the On the housing, the battery terminal connectors are located on the same side of the integrated BDU, and the sockets of the battery terminal connectors all face the same side of the housing.

Further, the integrated BDU further includes waterproof gaskets surrounding the outer peripheries of the high-voltage connector and the low-voltage connector.

Further, the waterproof gasket is provided with a plurality of installation holes at intervals.

Preferably, a plurality of connecting plates extending horizontally outwards from the bottom of the casing are used for connecting the battery box of the power battery pack.

Preferably, an electromagnetic protection upper end cover is provided above the housing, and the electromagnetic protection upper end cover at least partially covers the PCB circuit board and the housing.

Further, the housing is a metal housing, and the electromagnetic shielding upper end cover is a metal piece.

Further, the shell is a metal shell, the electromagnetic protection upper end cover is a plastic part, and the surface of the electromagnetic protection upper end cover is provided with metallic paint.

According to the power battery pack described in the second aspect of the present invention, the integrated BDU described in the first aspect of the present invention is provided.

According to the power battery pack described in the second aspect of the utility model, the utilization rate of space inside the power battery pack is improved, the assembly of the power battery pack is facilitated, and the installation and production of the power battery pack can be standardized.

Description of drawings

Fig. 1 is a schematic structural diagram of an integrated BDU according to an embodiment of the present invention.

Reference signs:

Integrated BDU100, housing 1, connection plate 11, fixing hole 111, PCB circuit board 2, harness interface 21, plug interface 22, high voltage connector 3, low voltage connector 4, positive and negative connectors 51, battery low voltage Connector 52, waterproof gasket 6, mounting hole 61, electromagnetic protection upper end cover 7.

detailed description

Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention, but should not be construed as limiting the present invention.

In the description of the present utility model, it should be understood that the orientations or positional relationships indicated by the terms "top", "bottom", "inner", "outer" and the like are based on the orientations or positional relationships shown in the accompanying drawings, and are only In order to facilitate the description of the present invention and simplify the description, it does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.

In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, a feature defined as "first" and "second" may explicitly or implicitly include one or more of these features. In the description of the present utility model, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

In this utility model, unless otherwise specified and limited, terms such as "installation", "connection", "connection" and "fixation" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connected, or integrated; it can be mechanically connected, or electrically connected, or can communicate with each other; it can be directly connected, or indirectly connected through an intermediary, and it can be the internal communication of two components or the interaction relationship between two components . Those of ordinary skill in the art can understand the specific meanings of the above terms in the present utility model according to specific situations.

In the present invention, unless otherwise clearly specified and limited, a first feature being "on" or "below" a second feature may include direct contact between the first and second features, and may also include the first and second features being in direct contact with each other. The features are not in direct contact but through another feature between them. Moreover, "above", "above" and "above" the first feature on the second feature include that the first feature is directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. "Below", "beneath" and "under" the first feature to the second feature include that the first feature is directly below and obliquely below the second feature, or simply means that the first feature has a lower level than the second feature.

Describe the utility model below in conjunction with accompanying drawing and with reference to specific embodiment.

Firstly, the integrated BDU100 (Battery Disconnect Unit, full name in Chinese: battery disconnect unit) of the embodiment of the present utility model will be described with reference to FIG. 1 .

As shown in Figure 1, the integrated BDU100 of the embodiment of the utility model can be installed in the battery pack casing of the power battery pack, and the integrated BDU100 can include a casing 1, a PCB circuit board 2, a high-voltage connector 3, and a low-voltage connector 4 and multiple battery terminal connectors.

As shown in Figure 1, a relay, a sensor, and a pre-charging resistor can be provided in the housing 1, and the relay, sensor, and pre-charging resistor can be connected to each other, and both the high-voltage connector 3 and the low-voltage connector 4 can be arranged on the housing 1. The high-voltage connector 3 can be connected to the high-voltage electrical appliances outside the power battery pack, and the low-voltage connector 4 can be connected to the low-voltage electrical appliances outside the power battery pack. It can be seen that the battery module can output power through the integrated BDU100.

Therefore, when the voltage of the battery module in the power battery pack is too high or too low, the integrated BDU100 can cut off the relay and stop the battery module from supplying power to the outside, so as to ensure the normal use and performance of the battery module.

As shown in Figure 1, the PCB circuit board 2 can be fixed on the upper end of the housing 1 and at least partially cover the housing 1, so as to ensure that the electrical components such as relays, sensors and pre-charging resistors in the housing 1 have a relatively closed working environment , PCB circuit board 2 can be connected with electrical components such as relays, sensors and pre-charging resistors in the housing 1 .

In some preferred embodiments, a wiring harness interface 21 can be provided on the PCB circuit board 2, and a wiring harness is connected between the low-voltage connector 4 and the wiring harness interface 21, that is, an external low-voltage electrical appliance can be connected to the PCB circuit board 2 through the wiring harness interface 21 , and further connected with electrical components such as relays, sensors and pre-charging resistors in the housing 1 .

It should be noted that the connection relationship between the low-voltage connector 4 and the PCB circuit board 2 can be more than this. In other preferred embodiments, the PCB circuit board 2 can be provided with a plug interface 22, and the low-voltage connector 4 Connectors are connected to the plug interface 22 , that is, external low-voltage electrical appliances can be connected to the PCB circuit board 2 through the plug interface 22 , and then connected to electrical components such as relays, sensors, and pre-charging resistors in the housing 1 .

In some other preferred embodiments, as shown in FIG. 1 , the PCB circuit board 2 can be provided with a wire harness interface 21 and a plug interface 22 at the same time, and a wire harness or a wire harness can be selectively connected between the low-voltage connector 4 and the wire harness interface 21. connector.

The high-voltage connector 3 can be directly connected to electrical components such as relays, sensors, and pre-charging resistors in the housing 1, and the battery module can be connected to electrical components such as relays, sensors, and pre-charging resistors in the housing 1 through the battery terminal connector. .

According to the integrated BDU100 of the embodiment of the utility model, a high-voltage connector 3, a low-voltage connector 4 and a plurality of battery terminal connectors are integrated in the housing 1, and relays, sensors and pre-charging devices are integrated in the housing 1. Electrical components such as resistors, compared with the traditional technical solution, the integrated BDU100 of the utility model embodiment is only connected to the battery module through a plurality of battery terminal connectors, which reduces the connection points between the BDU and the battery module in the power battery pack, and improves The working reliability of BDU is improved.

In addition, the integrated BDU 100 of the embodiment of the utility model has high integration, improves the space utilization rate inside the power battery pack, and improves the assembly efficiency of the power battery pack.

Preferably, as shown in Figure 1, both the high-voltage connector 3 and the low-voltage connector 4 can be arranged on the same side of the housing 1, so that the high-voltage connector 3 and the low-voltage connector 4 can be concentrated in the same functional area, which is convenient for the power battery Including the connection of external high-voltage electrical appliances and low-voltage electrical appliances to the integrated BDU100.

Preferably, as shown in FIG. 1, the battery terminal connector can include a positive and negative pole connector 51 and a battery low-voltage connector 52, and the positive and negative pole connector 51 can have a positive terminal for connecting the positive pole of the battery module And the negative terminal for connecting the negative pole of the battery module, the battery low-voltage connector 52 can connect the voltage sampling module of the battery module and the temperature control module of the battery module.

As shown in FIG. 1, the battery low-voltage connector 52 can be installed on the PCB circuit board 2, the positive and negative connectors 51 can be installed on the housing 1, and the battery terminal connectors can be located on the same side of the integrated BDU100. Moreover, the sockets of the battery terminal connectors can all face the same side of the housing 1 , so that the battery module can be more conveniently connected to the integrated BDU100.

Preferably, as shown in Figure 1, the integrated BDU100 can also include a waterproof gasket 6 surrounding the outer circumference of the high-voltage connector 3 and the low-voltage connector 4, the waterproof gasket 6 can be a flexible pad (such as a rubber pad), and the high-voltage connection When the connector 3 and the low-voltage connector 4 are connected to the battery pack shell, the waterproof gasket 6 can seal the area around the high-voltage connector 3 and the low-voltage connector 4 to prevent liquid or dust from entering the high-voltage connector 3 and the low-voltage connector 4, Ensure that the high-voltage connector 3 and the low-voltage connector 4 have a relatively closed working environment.

Specifically, as shown in FIG. 1 , a plurality of mounting holes 61 may be provided at intervals on the waterproof gasket 6 , and the high-voltage connector 3 and the low-voltage connector 4 may be connected and fixed to the battery pack casing through the mounting holes 61 .

In some preferred embodiments, as shown in Figure 1, the bottom of the housing 1 can extend horizontally outwards with a plurality of connection plates 11 for connecting the battery box of the power battery pack, and the connection plates 11 can be provided with fixing holes 111 , the bottom of the casing 1 can be fixed on the bottom wall of the battery pack casing through the fixing hole 111 .

More specifically, in the embodiment where the high-voltage connector 3 and the low-voltage connector 4 are arranged on the same side of the housing 1, the side of the housing 1 with the high-voltage connector 3 and the low-voltage connector 4 can be connected with the side of the battery pack housing at the same time. The side wall is fixed, so that the connection strength between the integrated BDU100 and the battery pack shell can be fully ensured.

In some preferred embodiments, as shown in FIG. 1, an electromagnetic protection upper end cover 7 may be provided above the housing 1, and the electromagnetic protection upper end cover 7 may at least partially cover the PCB circuit board 2 and the PCB circuit board 2 above the PCB circuit board 2. shell1. In some specific embodiments, the electromagnetic protection upper end cover 7 can completely cover the PCB circuit board 2 and the housing 1 above the PCB circuit board 2, so that the electromagnetic protection upper end cover 7 can protect the wire harness and socket on the PCB circuit board 2. The connectors and the electrical components inside the casing 1 are not affected by external electromagnetic interference.

In some specific embodiments, the housing 1 can be a metal housing 1, and the electromagnetic protection upper end cover 7 can be a metal piece, so that the wiring harness and connectors on the PCB circuit board 2 and the housing 1 can be fully protected. The internal electrical components are not affected by external electromagnetic interference.

It should be noted that the material of the electromagnetic protection upper end cover 7 can be more than this. In other specific embodiments, the housing 1 can be a metal shell 1, the electromagnetic protection upper end cover 7 can be a plastic part, and the electromagnetic protection upper end cover The surface of 7 can be provided with metallic paint, which can not only protect the wiring harness and connectors on the PCB circuit board 2 and the electrical components inside the housing 1 from the influence of external electromagnetic interference, but also reduce the upper end of the electromagnetic protection. The cost of cover 7.

The following describes the power battery pack of the embodiment of the present utility model.

The power battery pack of the embodiment of the utility model is provided with an integrated BDU 100 as in any one of the above-mentioned embodiments of the utility model.

According to the power battery pack of the embodiment of the utility model, by setting the integrated BDU100, the space utilization rate inside the power battery pack is improved, the assembly of the power battery pack is facilitated, and the installation and production of the power battery pack can be standardized at the same time.

In the description of this specification, descriptions referring to the terms "one embodiment", "some embodiments", "example", "specific examples", or "some examples" mean that specific features described in connection with the embodiment or example , structures, materials or features are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the specific features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification.

Although the embodiments of the present invention have been shown and described above, it can be understood that the above-mentioned embodiments are exemplary and should not be construed as limitations of the present invention, and those skilled in the art are within the scope of the present invention. Variations, modifications, substitutions and variations can be made to the above-described embodiments.

Claims (10)

1. a kind of integrated form BDU for electrokinetic cell bag, it is characterised in that including：

Relay, sensor and preliminary filling resistance are provided with housing, the housing；

PCB, the PCB is fixed on the upper end of the housing and covers the housing at least in part, described PCB is provided with wiring harness interface and/or splicing interface；

High-tension connector and low voltage connector, the high-tension connector and the low voltage connector are respectively provided with the housing, It is connected between the low voltage connector and the wiring harness interface between wire harness or the low voltage connector and the splicing interface It is connected with plug connector；And

Multiple battery-end connectors.

2. the integrated form BDU according to claim 1 for electrokinetic cell bag, it is characterised in that the high-tension connector The same side of the housing is arranged at the low voltage connector.

3. the integrated form BDU according to claim 1 for electrokinetic cell bag, it is characterised in that the battery-end is patched Part includes：Both positive and negative polarity plug connector and battery low pressure plug connector, the battery low pressure plug connector are arranged in the PCB, The both positive and negative polarity plug connector is installed on the housing, and the battery-end connector is respectively positioned on the same side of the integrated form BDU, And the socket of the battery-end connector is towards the homonymy of the housing.

4. the integrated form BDU according to claim 2 for electrokinetic cell bag, it is characterised in that also include：It is looped around institute State the waterproof sealing gasket of the periphery of high-tension connector and the low voltage connector.

5. the integrated form BDU according to claim 4 for electrokinetic cell bag, it is characterised in that the waterproof sealing gasket On be interval with multiple mounting holes.

6. the integrated form BDU according to claim 1 for electrokinetic cell bag, it is characterised in that the bottom of the housing Horizontally outward it is extended with multiple connecting plates for being used to connect the battery case of the electrokinetic cell bag.

7. the integrated form BDU according to claim 1 for electrokinetic cell bag, it is characterised in that the top of the housing Provided with electromagnetic protection upper end cover, the electromagnetic protection upper end cover covers the PCB and the housing at least in part.

8. the integrated form BDU according to claim 7 for electrokinetic cell bag, it is characterised in that the housing is metal Housing, the electromagnetic protection upper end cover is metalwork.

9. the integrated form BDU according to claim 7 for electrokinetic cell bag, it is characterised in that the housing is metal Housing, the electromagnetic protection upper end cover is working of plastics, and the surface of the electromagnetic protection upper end cover is provided with metallic paint.

10. a kind of electrokinetic cell bag, it is characterised in that including being used for power electric according to any one of claim 1-9 Chi Bao integrated form BDU.