CN219350603U - BDU shell and battery pack - Google Patents

Abstract

The utility model provides a BDU shell and a battery pack. The BDU shell comprises an upper shell and a bottom shell which are detachably connected, wherein a plurality of profiling grooves for accommodating electrical elements are formed in the bottom of the bottom shell, anti-reflection columns are arranged at the bottom of the bottom shell, and the anti-reflection columns are arranged on the sides of the profiling grooves. The utility model optimizes the internal space structure of the BDU shell, is convenient to mount and dismount and saves time.

Description

A BDU shell and battery pack

technical field

The utility model relates to the technical field of battery packs, in particular to a BDU casing and a battery pack.

Background technique

BDU (Battery Disconnect Unit), battery pack disconnect unit, is an important accessory in the high-voltage circuit of new energy vehicles, and is used to control the charging and discharging process of electric vehicles. It integrates multiple electrical components such as Hall sensors, relays, pre-charging resistors, pre-charging relays, and insurance. The BDU housing has limited internal space and compact structure. When multiple electrical components are arranged in the housing, it is messy and inconvenient. Operator installation and subsequent maintenance, disassembly efficiency is low, and when the electrical components are replaced, the housing is difficult to be compatible with different models. Therefore, it is necessary to improve the BDU shell and its internal space, make full use of the internal space of the shell, and make it universal and compatible with different types of electrical components.

Utility model content

The purpose of this utility model is to propose a BDU shell and a battery pack, which optimizes the internal space structure of the BDU shell, facilitates installation and disassembly, and saves time.

The utility model proposes a BDU shell, which includes a detachably connected upper shell and a bottom shell. The bottom of the bottom shell is provided with a number of profiling grooves for accommodating electrical components, and the bottom of the bottom shell is provided with anti-reverse columns. , the anti-reverse column is arranged on the side of the profiling groove.

The anti-reversal column is used to mark the positive and negative directions or the left and right directions of the profiling groove, so that the electrical components can be directly installed in the profiling groove, avoiding reverse installation of electrical components, thereby saving installation time.

The preferred technical solution of the utility model: the bottom shell is provided with a beam port, and two of the beam ports are arranged on the bottom shell at intervals.

The harness port is used to collect the harnesses connected to multiple electrical component interfaces, so that the harnesses are fixed in the BDU shell

The preferred technical solution of the utility model: a plurality of harness seats are arranged at the bottom of the bottom shell.

The wire harness seat is used to collect the wire harnesses extending from the interface of a single electrical component, and to organize the wire harnesses between different electrical components. Cooperating with the wire harness ports can avoid the problems of chaotic wiring inside the BDU shell and knotted wire harnesses.

The preferred technical solution of the utility model: the harness seat is made of elastic plastic.

Utilize the elasticity of the wire harness seat to snap the wire harness into it to realize the regular storage of the wire harness.

The preferred technical solution of the utility model: a locking tongue is provided on the outer side of the bottom case, a buckle is arranged on the outer side of the upper case, and the locking tongue can be snapped into the buckle.

The class and the bottom shell are connected by a lock tongue and a buckle, which is convenient for disassembly and assembly, and avoids the cumbersome operation of screw connection.

The preferred technical solution of the utility model: guide strips are arranged on the bottom shell to limit the displacement of the buckle, and the two guide strips are symmetrically arranged on both sides of the lock tongue.

The lock tongue and the snap fit limit the vertical displacement between the upper case and the bottom case, and the guide bar forms a stop on the side of the lock tongue to limit the lateral displacement between the upper case and the bottom case.

The preferred technical solution of the utility model: the upper shell is rotatably provided with several protective covers, the upper shell is provided with a rotating shaft, and the protective cover is clamped and arranged on the rotating shaft.

The preferred technical solution of the utility model: the number of the protective covers is the same as the number of the profiling grooves.

The protective cover is convenient for independent operation of a single electrical component, avoiding opening the upper case during maintenance, exposing multiple electrical components, and causing electric shock accidents; it improves the product safety and reliability of the BDU structure.

The preferred technical solution of the utility model: the upper shell and the bottom shell are integrally formed of plastic. Plastic insulation to improve the safety of BDU during use.

The utility model provides a battery pack, which includes a DU shell and several electrical components arranged in the BDU shell.

A BDU shell and battery pack of the utility model has the following beneficial effects: in the scheme provided by the utility model, several profiling grooves for accommodating electrical components are arranged in the bottom shell, and the inner space of the bottom shell is planned; Anti-reverse columns are set beside the profiling groove to mark the positive and negative directions of electrical components during installation, which is convenient for quick installation; the wiring harnesses connected between electrical components are neatly connected through the harness ports and harness holders to avoid knotting of the harnesses and to organize the housing The internal space of the body; and corresponding to the number of profiling grooves, a protective cover is installed at the corresponding position of the upper shell, and a single electrical component is operated by opening and closing the protective cover to avoid electric shock accidents, thereby improving the safety and reliability of the BDU structure.

Description of drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principle of the invention. In the drawings, like reference numerals are used to denote like elements. The accompanying drawings in the following description are some embodiments of the present utility model, but not all embodiments. Those skilled in the art can obtain other drawings based on these drawings without creative efforts.

Fig. 1 is an exploded view of the battery pack of the embodiment of the present invention.

Fig. 2 is a schematic diagram of a BDU housing according to an embodiment of the present invention.

Fig. 3 is an exploded view of the upper case in the embodiment of the present invention.

Fig. 4 is a schematic diagram of the bottom case in the embodiment of the present invention.

In the figure: 1. Insurance; 2. Pre-charging resistance; 3. Main relay; 4. Pre-charging relay; 5. Hall sensor; 11. Protective cover; 111. Connecting seat; 20. Bottom shell; 201. Lock tongue; 202. Guide bar; 21. Profiling groove; 211. Connecting hole; 22. Anti-reverse column; Harness port; 25, pole; 30, copper row; 40, wire harness.

Detailed ways

In order to make the purpose, technical solutions and advantages of the embodiments of the utility model more clear, the technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the utility model. Obviously, the described The embodiments are some embodiments of the present utility model, but not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined arbitrarily with each other.

See Figures 1 through 4. A BDU housing, including a detachably connected upper case 10 and a bottom case 20, the bottom of the bottom case 20 is provided with a number of profiling grooves 21 for accommodating electrical components, and the sides of the profiling grooves 21 are provided with anti-reverse columns 22, in order to mark the installation direction of electrical components and prevent reverse installation of electrical components.

Bottom shell 20 comprises bottom plate and the side plate that is arranged around bottom plate, profiling groove 21 and anti-reversal column 22 are all arranged on bottom plate, and side plate is provided with deadbolt 201, and upper shell 10 is provided with to cooperate with deadbolt 201. The buckle 101 and the lock tongue 201 can be snapped into the buckle 101 to connect the upper shell 10 and the bottom shell 20 .

It should be noted that the number and size of the profiling slots 21 should be determined according to the number and specifications of electrical components required in actual use. As shown in Fig. 1 and Fig. 4, in this embodiment, there are seven profiling grooves 21 for accommodating three main relays 3, one pre-charging relay 4, one Hall sensor 5, one insurance 1, and a precharge resistor 2.

Among them, an anti-reverse column 22 is vertically set up on the side of the profiling groove 21 for accommodating the main relay 3, which can limit the installation direction of the main relay 3 and avoid the installation of the main relay 3 in the opposite direction, thereby planning the connection between electrical components. , making the connection between the main relays 3 consistent.

Wherein, the bottom of the profiling groove 21 for accommodating the Hall sensor 5 is provided with a bracket connection hole 211, and a support rod 25 for supporting the copper bar 30 is provided on the side of the profiling groove 21, so that the Hall sensor 5 can pass through The bracket is installed in the profiling groove 21, or installed in the profiling groove 21 through the copper bar 30, so that the bottom case 20 can be compatible with the installation of different Hall sensors 5, increasing the versatility of the BDU shell. When the required Hall sensor 5 needs to be installed through the bracket, the bracket can be connected to the connection hole 211; The copper bar 30 enables the Hall sensor 5 to be disposed in the bottom case 20 in different ways. When there is a shortage of Hall sensors 5 at the work site, Hall sensors 5 of different specifications and brands can be used to replace them, so as to smoothly advance the work process and save time and cost.

The bottom plate of the bottom case 20 is also provided with a number of wire harness seats 23, the wire harness seats 23 are U-shaped structures made of elastic plastics, used to gather and store the wire harnesses 40 connected between the electrical components, and prevent the wire harnesses 40 from being scattered; The wire harness 40 can be directly snapped into the wire harness seat 23 to avoid excessive occupation of the inner space of the bottom case 20 . It should be noted that the number of wire harness seats 23 and the installation direction of the wire harness seats 23 should be determined according to actual use scenarios.

Two harness ports 24 are provided on the side plate of the bottom case 20, respectively used to bundle the high-voltage sampling harness and the low-voltage control harness, so that they can be integrated inside the BDU shell to avoid confusion of the harness 40 and affect installation and maintenance.

The bottom shell 20 and the upper shell 10 are respectively provided with a lock tongue 201 and a buckle 101 , and the lock tongue 201 can be snapped into the buckle 101 to connect the upper shell 10 and the bottom shell 20 . The cross section of the lock tongue 201 is trapezoidal, and the buckle 101 is provided with a bayonet. When the upper shell 10 is covered on the bottom shell 20, the lock tongue 201 can be snapped into the buckle 101, and the corner end of the lock tongue 201 abuts against the buckle. The inner wall of the bayonet socket of the buckle 101 limits the vertical displacement between the upper case 10 and the bottom case 20 .

Preferably, the two guide strips 202 are symmetrically arranged on both sides of the lock tongue 201, and the distance between the two guide strips 202 is equal to the width of the buckle 101. When the lock tongue 201 is engaged with the buckle 101, the guide strips 202 are located The two sides of the buckle 101 form stoppers on both sides of the buckle 101 to limit the lateral displacement between the upper case 10 and the bottom case 20 , so as to stably connect the upper case 10 and the bottom case 20 .

The upper shell 10 is also provided with a number of protective covers 11 movably, the number of the protective covers 11 is the same as the number of the profiling grooves 21, and the position of the protective covers 11 on the upper shell 10 is the same as the position of the profiling grooves 21 on the bottom shell 20. Correspondingly; when the upper shell 10 and the bottom shell 20 are snapped together, it should be satisfied that the protective cover 11 is set on the electrical component. The upper shell 10 is provided with a rotating shaft 102 , and the side of the protective cover 11 is provided with a C-shaped connecting seat 111 . When checking a single electrical component, the protective cover 11 of the corresponding electrical component can be directly opened, and the electrical component can be operated independently, so as to avoid taking off the entire upper case 10 to expose all electrical components and increase the risk of electric shock.

Preferably, the upper case 10 and the bottom case 20 are integrally formed of insulating plastic to avoid electric shock; the upper case 10 is provided with a heat dissipation port 103 for heat dissipation.

Please refer to FIG. 1 again. A battery pack includes a detachably connected upper case 10 and a bottom case 20 . The bottom case 20 is provided with a number of electrical components, as well as wire harnesses 40 and copper bars 30 for connecting the electrical components. The battery pack has a compact structure and effectively utilizes the limited space inside the BDU housing.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: it can still modify the technical solutions described in the aforementioned embodiments, or perform equivalent replacements for some of the technical features; and These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims (10)

1. A BDU shell, characterized in that it includes a detachably connected upper shell (10) and a bottom shell (20), and the bottom of the bottom shell (20) is provided with several profiling grooves for accommodating electrical components (21), the bottom of the bottom shell (20) is provided with an anti-reverse column (22), and the anti-reverse column (22) is provided on the side of the profiling groove (21). 2. A BDU housing according to claim 1, characterized in that, the bottom case (20) is provided with a wire harness port (24), and two of the wire harness ports (24) are arranged at intervals between the above the bottom case (20). 3 . The BDU housing according to claim 2 , characterized in that, several harness seats ( 23 ) are arranged on the bottom of the bottom case ( 20 ). 4 . 4. A BDU housing according to claim 3, characterized in that the harness seat (23) is made of elastic plastic. 5. A BDU housing according to claim 1, characterized in that a lock tongue (201) is provided on the outer side of the bottom case (20), and a buckle (201) is provided on the outer side of the upper case (10) 101), the lock tongue (201) can be clamped and arranged in the buckle (101). 6. A BDU housing according to claim 5, characterized in that, the bottom case (20) is provided with a guide bar (202) for limiting the displacement of the buckle (101), and the two guide bars The bars (202) are arranged symmetrically on both sides of the lock tongue (201). 7. A BDU casing according to claim 5, characterized in that, several protective covers (11) are rotatably provided on the upper case (10), and a rotating cover (11) is provided on the upper case (10). shaft (102), and the protective cover (11) is clamped and arranged on the rotation shaft (102). 8. The BDU casing according to claim 7, characterized in that, the number of the protective covers (11) is the same as the number of the profiling grooves (21). 9. The BDU casing according to claim 1, characterized in that, the upper casing (10) and the bottom casing (20) are integrally formed of plastic. 10. A battery pack, characterized by comprising a BDU casing according to any one of claims 1 to 8, and several electrical components arranged in the BDU casing.

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