CN219419387U

CN219419387U - Power distribution unit and battery device

Info

Publication number: CN219419387U
Application number: CN202320825134.1U
Authority: CN
Inventors: 王晓洋; 王琼; 李跃峰; 王明凯
Original assignee: China Innovation Aviation Technology Group Co ltd
Current assignee: China Innovation Aviation Technology Group Co ltd
Priority date: 2023-04-13
Filing date: 2023-04-13
Publication date: 2023-07-25
Anticipated expiration: 2033-04-13

Abstract

The utility model relates to the technical field of batteries, in particular to a power distribution unit and a battery device. The power distribution unit provided by the utility model has the advantages that the box body comprises the body part and the reinforcing part, the connector is arranged on the reinforcing part, the thickness of the reinforcing part is larger than that of the body part, and the strength of the reinforcing part is required to be larger than that of the body part, so that the structure strength of the reinforcing part provided with the connector can be improved on one side of the box body of the power distribution unit corresponding to the fixed connector, the vibration and impact resistance of the reinforcing part after the connector is integrated can be ensured, the vibration and impact requirements during repeated plugging and unplugging are met, the fatigue resistance of the box body during plugging and unplugging of the connector is improved, the requirement of frequent plugging and unplugging of the connector is met, and the reliability of equipment is ensured.

Description

Power distribution unit and battery device

Technical Field

The utility model relates to the technical field of batteries, in particular to a power distribution unit and a battery device.

Background

Power cell devices typically include a battery and a Power Distribution Unit (PDU) connected to the battery through which powered devices are electrically connected to the battery. For the power battery device on the commercial vehicle, due to the large power demand and the large number of battery packs, the PDU is not integrated in a single battery pack, but is assembled with a plurality of battery packs through an assembly frame. The PDU is electrically connected with the whole vehicle through a connector on the PDU to realize circuit conduction.

The connector of PDU needs to be installed on the PDU box, and current PDU box is panel beating integrated into one piece, is limited to panel beating bending degree of difficulty of panel beating material, and box thickness can't be made thick, and box intensity is lower.

For the electric equipment adopting the power conversion mode, the connector of the PDU needs to be repeatedly plugged and unplugged; in addition, in order to facilitate the insertion and the extraction, the connector is arranged on the bottom surface of the PDU box body, the wall surface of the box body where the connector is positioned is also subjected to the dead weight of the power distribution device, and the strength of the existing box body cannot meet the requirements.

The problem of the connector frequent plug intensity of PDU when commercial car trades the electricity insufficient is solved.

Disclosure of Invention

Therefore, the technical problem to be solved by the utility model is to overcome the defect that the strength of the PDU box body can not meet the requirement when the connector needs to be frequently plugged in and plugged out in the prior art, thereby providing a power distribution unit and a battery device which meet the requirement of the connector on frequent plugging in and plugging out.

In order to solve the above technical problems, the present utility model provides a power distribution unit, including:

the box body and the connector arranged on the box body;

the box body comprises a body part and a reinforcing part, a through hole for penetrating the connector is formed in the reinforcing part, and the connector is arranged in the through hole;

the thickness of the reinforcing portion is greater than the thickness of the body portion.

The battery device provided by the utility model comprises:

a power distribution unit as described above and at least one battery pack; the battery pack is electrically connected with the power utilization device through the power distribution unit.

The technical scheme of the utility model has the following advantages:

1. the power distribution unit provided by the utility model has the advantages that the box body comprises the body part and the reinforcing part, the connector is arranged on the reinforcing part, the thickness of the reinforcing part is larger than that of the body part, and the strength of the reinforcing part is required to be larger than that of the body part, so that the structure strength of the reinforcing part provided with the connector can be improved on one side of the box body of the power distribution unit corresponding to the fixed connector, the vibration and impact resistance of the reinforcing part after the connector is integrated can be ensured, the vibration and impact requirements during repeated plugging and unplugging are met, the fatigue resistance of the box body during plugging and unplugging of the connector is improved, the requirement of frequent plugging and unplugging of the connector is met, and the reliability of equipment is ensured.

2. The power distribution unit provided by the utility model can realize the sealing of the body part and the reinforcing part by arranging the groove on the reinforcing part and arranging the sealing ring in the groove and sealing the contact position of the body part and the reinforcing part by the sealing ring, further meets the sealing waterproof requirement on the basis of meeting the mechanical vibration impact requirement so as to ensure the waterproof performance of the sealing position,

3. according to the power distribution unit provided by the utility model, the supporting plate is arranged at intervals with the reinforcing part in the plugging direction, and the plurality of supporting pieces are arranged between the supporting plate and the reinforcing part, so that the supporting plate and the reinforcing part can be fixed by the supporting pieces, and the situation that the reinforcing part deforms to squeeze an internal electronic element during plugging of the connector can be avoided by the interval arrangement.

4. According to the power distribution unit provided by the utility model, the supporting plate is arranged as the insulating plate, so that the occurrence of short circuit between the electronic element and the circuit and the box body of the power distribution unit can be avoided, and the safety of the electronic element is ensured.

5. According to the power distribution unit provided by the utility model, the reinforcing part comprises the side plate which is positioned outside the projection range of the body part along the plugging direction, the side plate is provided with a plurality of mounting holes, and the reinforcing part is connected with external equipment through the mounting holes. Through setting up the mounting hole on the sideboard, can the rational utilization enhancement portion, increase the convenience that is connected with external equipment, need not to set up extra mounting structure on the box. And the side plate surrounds the inner plate for a circle, so that the sealing effect of the side plate when the side plate is connected with external equipment can be improved.

6. Because the battery device of this embodiment is installed to the power consumption device from top to bottom, and the connector is in the bottom surface of battery device, and the plug intensity that connector position department received mainly comes from battery device's dead weight, is greater than the intensity of general plug mode, consequently need be greater than the thickness of reinforcing part the thickness of body portion to guarantee that reinforcing part has sufficient intensity, guarantee that reinforcing part vibration resistance, shock resistance's intensity behind integrated connector, vibration, the impact requirement when satisfying the repeated plug, the antifatigue degree of box when improving the connector plug, satisfy the demand of the frequent plug of connector, guarantee equipment reliability.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of a power distribution unit of the present utility model;

fig. 2 is a bottom view of the power distribution unit of the present utility model;

FIG. 3 is a schematic partial cross-sectional view of a power distribution unit of the present utility model in elevation;

FIG. 4 is a schematic illustration of the power distribution unit of the present utility model with the reinforcement removed;

FIG. 5 is a schematic view of a reinforcement portion of the present utility model.

Reference numerals illustrate:

1-a box body, 11-a body part, 12-a reinforcing part, 121-a side plate, 122-a groove, 123-an inner plate, 124-a through hole and 125-a mounting hole;

2-connector, 3-case lid, 4-backup pad, 5-support piece, 6-sealing washer.

Detailed Description

The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements 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 utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In addition, the technical features of the different embodiments of the present utility model described below may be combined with each other as long as they do not collide with each other.

Example 1

As shown in fig. 1 to 5, the power distribution unit provided in this embodiment includes:

a case 1 and a connector 2 provided on the case 1;

the box body 1 comprises a body part 11 and a reinforcing part 12, a through hole 124 for penetrating the connector 2 is formed in the reinforcing part 12, and the connector 2 is arranged in the through hole 124;

the thickness of the reinforcing portion 12 is greater than the thickness of the body portion 11.

Optionally, the inside of the box 1 is suitable for installing electrical components, and a plurality of connectors can be installed on the wall surface of the box 1 to realize the electrical connection between the power distribution unit and the battery pack. The box body 1 is also provided with a connector 2, and the power distribution unit is electrically connected with the power utilization device through the connector 2.

The box 1 includes body portion 11 and reinforcing portion 12, combines the fig. 1 to show, body portion 11 can be for encircling the circumference lateral wall of a week, body portion 11 can be the panel beating box, through integral type panel beating bending, is limited to panel beating bending degree of difficulty of sheet metal material, and thickness should not exceed 5mm, the wall thickness value range of body portion 11 can be 1mm to 5mm, and as the preference, the wall thickness value of body portion 11 can be 1mm, 1.5mm, 2mm, 3mm, 3.5mm, 4mm, 5 mm's arbitrary item.

The reinforcing part 12 is a wall surface provided with the connector 2 on the box body 1, because the connector 2 has the requirement of repeated plugging, the strength of the reinforcing part 12 needs to be greater than that of the body part 11, and the thickness of the reinforcing part 12 is greater than that of the body part 11 through setting, so that the strength of the reinforcing part 12 can be improved, the vibration and impact resistance strength of the reinforcing part 12 after the connector 2 is integrated is ensured, and the vibration and impact requirements during repeated plugging are met.

Optionally, the reinforcing portion 12 may be made of an aluminum alloy, and is molded by die casting, and the wall thickness of the reinforcing portion 12 may range from 8mm to 15mm, and preferably, the wall thickness of the reinforcing portion 12 may be any one of 8mm, 9mm, 10mm, 11mm, 12mm, 13mm, 14mm, and 15 mm. Through testing, when the wall thickness of the reinforcing part 12 is 10mm, after the connector 2 is integrated, the plugging requirement of the whole 10000 times of mechanical life of the power distribution unit can be met, and the reliability of equipment is ensured.

The power distribution unit that this embodiment provided, box 1 include body portion 11 and reinforcing part 12, install connector 2 on the reinforcing part 12 to make the thickness of reinforcing part 12 be greater than the thickness of body portion 11, make the intensity of reinforcing part 12 need be greater than the intensity of body portion 11, thereby strengthen corresponding fixed connector's one side on the box 1 of power distribution unit, can improve the structural strength of reinforcing part 12 that is provided with connector 2, guarantee the intensity of vibration resistance, shock resistance of reinforcing part 12 behind integrated connector 2, satisfy vibration, the shock requirement when repeatedly plug, the antifatigue degree of box when improving the connector plug, satisfy the demand of connector frequent plug, guarantee equipment reliability.

Optionally, the reinforcement portion 12 is provided with a through hole 124 for penetrating the connector 2, and the connector 2 is disposed in the through hole 124; the contact position of the connector 2 and the through hole 124 is provided with a sealing structure to ensure a waterproof sealing effect.

Optionally, the electricity consumption device may be a vehicle, a ship, an aircraft, or the like, and in this embodiment, the electricity consumption device may be preferably a vehicle, and further may be a commercial vehicle.

As an optional application scenario, the power distribution unit provided in this embodiment may be applied to a battery device on a commercial vehicle, and in particular may be applied to a commercial vehicle with a power conversion requirement. Because of the large power demand of commercial vehicles, the large number of battery packs, the power distribution units are not integrated in a single battery pack, but are assembled with a plurality of battery packs through an assembly frame to form a battery device. And then assemble the bracket of commercial car with whole battery device from top to bottom on, the distribution unit is located the bottom of battery device preferably, and the connector is located the bottom surface of distribution unit preferably, at the power conversion in-process, the connector realizes the plug as the connector of whole battery device and the joint of commercial car, in order to cooperate the installation direction, the connector carries out the plug with the joint of commercial car along upper and lower direction, and then is connected with whole car electricity through the connector on the distribution unit and realizes circuit conduction.

Specifically, the body portion 11 and the reinforcing portion 12 are molded separately.

Since the thickness of the reinforcing portion 12 is greater than that of the body portion 11, local reinforcement of the case 1 is achieved. But is difficult to realize integrated into one piece in the technology, this embodiment through make body portion 11 with reinforcing part 12 components of a whole that can function independently shaping to the convenience carries out independent processing according to the intensity demand of different sides, reduces the technology degree of difficulty, and the reinforcing part 12 of convenient different thickness of design as required, and when earlier stage design, reinforcing part 12 of different thickness can be selected as required, and when follow-up maintenance, the possibility that reinforcing part 12 independently replaced has been realized. The reinforcement portion 12 may be a flat plate structure.

Specifically, the reinforcing portion 12 includes a reinforcing plate, the body portion 11 includes an upper case formed by enclosing a plurality of wall surfaces, and the body portion 11 and the reinforcing portion 12 together enclose a receiving chamber.

Referring to fig. 1, the reinforcing portion 12 is a bottom plate, and the main body 11 is a side plate disposed above the bottom plate and surrounding the bottom plate. The body 11 is open toward the reinforcing portion 12 to facilitate the insertion and removal of the connector 2.

Specifically, the contact position between the body 11 and the reinforcing part 12 is sealed by the sealing ring 6, and the reinforcing part 12 is provided with a groove 122 for accommodating the sealing ring 6.

As shown in fig. 5, the groove 122 is formed in the reinforcing portion 12, the sealing ring 6 is disposed in the groove 122, and the contact position between the body portion 11 and the reinforcing portion 12 is sealed by the sealing ring 6, so that the sealing of the body portion 11 and the reinforcing portion 12 can be achieved, the sealing waterproof requirement is further satisfied on the basis of satisfying the mechanical vibration impact requirement, the waterproof performance of the sealing position is ensured, and preferably, the protection level of the body portion 11 and the reinforcing portion 12 can reach the IP67 protection level.

Alternatively, since the body portion 11 is a sheet metal structure, it is difficult to provide a groove, and the reinforcing portion 12 is a metal plate having a thicker thickness, the slotting is easy to be implemented. It may be preferable to provide the recess 122 in the reinforcing portion 12.

The groove 122 is formed around the upper surface of the reinforcing portion 12.

Specifically, as shown in fig. 3 and 4, the power distribution unit further includes a support plate 4 adapted to fix an electrical component, the support plate 4 is disposed at a distance from the reinforcing portion 12 in the insertion and extraction direction, and a plurality of support members 5 are disposed between the support plate 4 and the reinforcing portion 12.

The supporting plate 4 is suitable for fixing electric components, so that the electronic components can be assembled more conveniently, the supporting plate 4 assembled with the electronic components is assembled into the box body 1 integrally, and the installation efficiency is improved.

The power distribution unit that this embodiment provided, backup pad 4 in the plug orientation with reinforcing part 12 interval sets up, backup pad 4 with be equipped with a plurality of support pieces 5 between the reinforcing part 12, and then can realize through support piece 5 that backup pad 4 and reinforcing part 12's installation is fixed, and can avoid the reinforcing part 12 to take place the condition emergence of deformation extrusion inside electronic component when connector 2 plug through the interval setting.

Specifically, the support plate 4 is an insulating plate.

Through setting up the backup pad as the insulation board, can avoid the condition emergence of electronic component and circuit and distribution unit box short circuit, guarantee electronic component's safety.

Specifically, the body 11 and the reinforcing portion 12 are made of the same material.

In this embodiment, the body 11 and the reinforcing portion 12 may be made of aluminum alloy, and the thickness of the reinforcing portion 12 is greater than that of the body 11, so as to improve the strength of the reinforcing portion 12.

Optionally, as shown in fig. 1, the power distribution unit further includes a case cover 3, where the case cover 3 is covered on an upper opening of the case body 1, and optionally, the case cover 3 and the reinforcing portion 12 are respectively disposed on two sides of the body portion 11.

Through seting up the opening on box 1, be suitable for assembling inside electrical components, circuit through the opening to make things convenient for later maintenance, and seal the opening through case lid 3, guarantee the closure of box 1.

Specifically, referring to fig. 5, the reinforcing portion 12 includes a side plate 121 located outside the projection range of the body portion 11 along the insertion direction, a plurality of mounting holes 125 are formed in the side plate 121, and the reinforcing portion 12 is connected to an external device via the mounting holes 125.

The reinforcement portion 12 further includes an inner plate 123 located within a projection range of the body portion 11 in the insertion and extraction direction, and the through hole 124 is located within the range of the inner plate 123.

Optionally, the boundary plate 121 and the inner plate 123 are bordered by the groove 122.

By providing the mounting hole 125 on the side plate 121, the reinforcing portion 12 can be reasonably utilized, the convenience of connection with external equipment can be increased, and an additional mounting structure does not need to be provided on the case 1. And the side plate 121 surrounds the inner plate 123 for one circle, the sealing effect when the side plate 121 is connected with external equipment can be increased.

Example two

The present embodiment provides a battery device including:

the power distribution unit of embodiment one above and at least one battery pack; the battery pack is electrically connected with the power utilization device through the power distribution unit.

Alternatively, the power distribution unit is not integrated within a single battery pack, but is assembled with a plurality of battery packs by an assembly frame to form the battery device. The power distribution unit is preferably located at the bottom of the battery device and the connector is preferably located at the bottom surface of the power distribution unit.

Optionally, the battery device includes a battery box. During the power change, the entire battery device may be assembled from top to bottom to an electrical consumer, which may include a commercial vehicle. In the power exchange process, the connector is used as a connector of the whole battery device to be plugged with a joint of a commercial vehicle, and the connector and the joint of the commercial vehicle are plugged in the vertical direction so as to match the installation direction, so that the connector on the power distribution unit is electrically connected with the whole vehicle to realize circuit conduction.

Specifically, the power distribution unit is located at the opposite lower side of the battery pack, the connector 2 is located at the bottom end of the box 1, and the connector of the power utilization device is plugged into and pulled out from the connector 2 along the up-down direction.

Because the battery device of this embodiment is installed to the power consumption device from top to bottom, the connector 2 is at the bottom surface of the battery device, and the plug strength that the connector 2 position received mainly comes from the dead weight of the battery device, is much greater than the intensity of general plug mode, therefore the thickness of the reinforcing part 12 needs to be greater than the thickness of the body part 11, so as to ensure that the reinforcing part 12 has sufficient strength, ensure that the reinforcing part 12 has vibration and impact resistance after integrating the connector 2, satisfy the vibration and impact requirements during repeated plug, improve the fatigue resistance of the box body during connector plug, satisfy the requirement of frequent plug of the connector, and ensure the reliability of the equipment.

It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. And obvious variations or modifications thereof are contemplated as falling within the scope of the present utility model.

Claims

1. A power distribution unit, comprising:

a box body (1) and a connector (2) arranged on the box body (1);

the box body (1) comprises a body part (11) and a reinforcing part (12), a through hole (124) for penetrating the connector (2) is formed in the reinforcing part (12), and the connector (2) is arranged in the through hole (124);

the thickness of the reinforcing part (12) is greater than the thickness of the body part (11).

2. The power distribution unit according to claim 1, characterized in that the body portion (11) and the reinforcement portion (12) are molded separately.

3. The power distribution unit according to claim 2, wherein the reinforcement portion (12) comprises a reinforcement plate, the body portion (11) comprises an upper case formed by enclosing a plurality of wall surfaces, and the body portion (11) and the reinforcement portion (12) together enclose a receiving cavity.

4. A power distribution unit according to claim 3, characterized in that the contact position of the body part (11) and the reinforcement part (12) is sealed by a sealing ring (6), and the reinforcement part (12) is provided with a groove (122) for accommodating the sealing ring (6).

5. The power distribution unit according to any one of claims 1-4, characterized in that the power distribution unit further comprises a support plate (4) adapted to fix an electrical component, the support plate (4) being arranged at a distance from the reinforcement (12) in the plugging direction, a plurality of support members (5) being arranged between the support plate (4) and the reinforcement (12).

6. The power distribution unit according to claim 5, characterized in that the support plate (4) is an insulating plate.

7. The power distribution unit according to any one of claims 1-4, characterized in that the body portion (11) and the reinforcement portion (12) are made of the same material.

8. The power distribution unit according to any one of claims 1 to 4, wherein the reinforcement portion (12) includes a side plate (121) located outside the projection range of the body portion (11) along the insertion-extraction direction, a plurality of mounting holes (125) are formed in the side plate (121), and the reinforcement portion (12) is connected to an external device via the mounting holes (125).

9. A battery device, characterized by comprising:

the power distribution unit of any of the preceding claims 1-8 and at least one battery pack; the battery pack is electrically connected with the power utilization device through the power distribution unit.

10. The battery device according to claim 9, wherein the power distribution unit is located relatively below the battery pack, and a connector (2) is located at a bottom end of the case (1), and the connector of the power utilization device is inserted and removed in an up-down direction with respect to the connector (2).