CN213124537U

CN213124537U - Portable BDU who trades electric battery package

Info

Publication number: CN213124537U
Application number: CN202021204541.3U
Authority: CN
Inventors: 周道辉; 辛明; 李锵
Original assignee: Dialev New Energy Automobile Co ltd
Current assignee: Dialev New Energy Automobile Co ltd
Priority date: 2020-06-24
Filing date: 2020-06-24
Publication date: 2021-05-04
Anticipated expiration: 2030-06-24

Abstract

The utility model provides a BDU of a portable battery replacing pack, which comprises a box body, wherein a box cover is arranged on the box body, each electrical component forming the BDU is arranged in the box body, and a plurality of anode input branches and a cathode input main circuit are arranged in the box body; the main positive relay is arranged on the high-voltage positive input main circuit which is connected with the positive input branches in series; the pre-charging relay and the pre-charging resistor are connected in series and are arranged on the high-voltage positive electrode input main circuit in parallel with the main positive relay; the main fuse is arranged on the high-voltage positive input main circuit and is arranged between the main positive relay and each positive input branch circuit; the battery management system is arranged in the box body, and an input end low-voltage communication interface and an output end low-voltage communication interface of the battery management system are arranged on the side wall of the box body. The utility model discloses a portable BDU who trades battery package can carry out the work distribution to not leading to the battery package through setting up a plurality of anodal input branch roads, obtains better result of use.

Description

Portable BDU who trades electric battery package

Technical Field

The utility model relates to a BDU technical field, in particular to portable BDU who trades electric battery package.

Background

The existing BDU product in the market at present mainly has the functions of integrating power battery system electric devices, guaranteeing the safety, power distribution, insulation, control and the like of the power battery electric system. However, the existing BDU products are difficult to switch on and off the operation of a single battery pack, and thus lack the ability to distribute the operations of different battery packs.

SUMMERY OF THE UTILITY MODEL

In view of this, the present invention is directed to a BDU for a portable battery pack, which can distribute the work of different battery packs.

In order to achieve the above purpose, the technical scheme of the utility model is realized like this:

a BDU of a portable rechargeable battery pack, comprising:

the BDU comprises a box body, a plurality of BDUs and a plurality of BDUs, wherein the BDUs are arranged in the box body;

the main positive relay is arranged on a high-voltage positive input main circuit which is connected with each positive input branch in series;

the high-voltage positive pole input main circuit comprises a pre-charging relay and a pre-charging resistor, wherein the pre-charging relay and the pre-charging resistor are connected in series and are arranged on the high-voltage positive pole input main circuit in parallel with the main positive relay;

the main fuse is arranged on the high-voltage positive input main circuit and is arranged between the main positive relay and each positive input branch circuit;

the battery management system is arranged in the box body, and an input end low-voltage communication interface and an output end low-voltage communication interface of the battery management system are arranged on the side wall of the box body.

Furthermore, an output end high-voltage interface is arranged on the side wall of the box body, and the high-voltage positive input main circuit and the negative input main circuit are both connected with the output end high-voltage interface.

Furthermore, each positive input branch comprises an input end positive branch high-voltage interface and a branch relay, and each branch relay is connected in parallel and then converges into the high-voltage positive input circuit.

Further, the negative input branch comprises an input end negative general loop high-voltage interface and a shunt.

Furthermore, a lifting lug is arranged on the outer side wall of the box body.

Furthermore, a fixing ring is arranged at the upper end of the box body in a circumferential outward extending mode, a plurality of fixing holes are uniformly formed in the fixing ring, a connecting ring is arranged at the lower end of the box cover in a circumferential outward extending mode, connecting holes matched with the fixing holes are formed in the connecting ring, and a fixing piece penetrates through the fixing holes and is in threaded connection with the connecting holes to form the fixation of the box cover on the box body.

Furthermore, a sealing ring is arranged on the end face of the fixing ring and the end face of the connecting ring.

Compared with the prior art, the utility model discloses following advantage has:

(1) a portable BDU who trades electric battery package, through setting up many anodal input branch roads and battery control system, can carry out on-off control to the work of the independent battery package on the branch road alone to carry out work distribution to different battery packages.

(2) By arranging the output end high-voltage interface, the high-voltage positive input main circuit and the negative input main circuit can form a high-voltage main circuit, and can be output outwards through the output end high-voltage interface.

(3) By arranging the branch relays and connecting the branch relays in parallel, on-off control can be performed on each positive input branch, so that work distribution of different battery packs is realized.

(4) Through setting up the shunt, can measure circuit current, protection battery system prevents to overflow.

(5) Through setting up the lug, can make the box be convenient for install fixed more.

(6) Through setting up connecting ring and retainer plate, can be so that the case lid is more convenient for be fixed in on the box, area of contact when the increase is fixed simultaneously plays certain sealed effect.

(7) Through setting up the sealing washer, can be so that sealed between case lid and the box to prevent that dust and steam etc. from causing the damage to BDU internal elements.

Drawings

The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. In the drawings:

fig. 1 is a schematic diagram of a BDU front side structure of a portable battery replacement pack according to an embodiment of the present invention;

fig. 2 is a schematic diagram of a BDU rear side structure of a portable battery replacement pack according to an embodiment of the present invention;

fig. 3 is a schematic view of an internal structure of the box according to the embodiment of the present invention;

fig. 4 is a circuit diagram of a BDU of a portable battery replacement pack according to an embodiment of the present invention;

description of reference numerals:

1-box body, 11-lifting lug;

2-box cover;

3-input end positive pole branch high-voltage interface, 31-branch relay, 32-main fuse, 33-main positive relay, 34-pre-charging relay, 35-pre-charging resistor and 36-output end high-voltage interface;

4-input end negative pole general loop high voltage interface, 41-shunt;

5-input end low-voltage communication interface, 51-battery management system and 52-output end low-voltage communication interface.

Detailed Description

It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "back", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.

The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

The embodiment relates to a BDU of a portable battery pack, which comprises a box body, a main positive relay pre-charging relay, a pre-charging resistor, a main fuse and a battery management system, wherein a plurality of positive input branches and a negative input main circuit are arranged in the box body. The utility model discloses a portable BDU who trades battery package can carry out the work distribution to not leading to the battery package through setting up a plurality of anodal input branch roads, obtains better result of use.

Based on the above design concept, an exemplary structure of a BDU of a portable rechargeable battery pack according to this embodiment is shown in fig. 1, and includes a case 1, where the case 1 is disposed in a rectangular parallelepiped shape. In order to facilitate the installation and fixation of the box body 1 in the automobile, the two sides of the box body 1 are symmetrically provided with the lifting lugs 11, each lifting lug 11 is uniformly provided with two installation holes, and the box body 1 can be fixed in the automobile by penetrating through the installation holes through bolts and being in threaded connection with corresponding supports of the automobile.

In order to protect various elements in the box body 1, a box cover 2 is arranged on the box body 1. The upper end of the box body 1 is provided with a fixing ring extending outwards along the circumferential horizontal direction of the box body 1, the fixing ring is evenly provided with fixing holes, the lower end of the box cover 2 is provided with a connecting ring outwards along the circumferential horizontal direction of the box cover 2, the connecting ring is provided with a connecting hole matched with the fixing hole, and a bolt penetrates through the connecting hole and is in threaded connection with the fixing hole, so that the box cover 2 is fixed on the box body 1. In order to seal between the box body 1 and the box cover 2 and prevent dust or water vapor from entering the box body 1 and damaging BDU elements in the box body 1, a sealing ring is bonded on the upper surface of the fixing ring. Of course, the shape of the case 1 is not limited to the rectangular parallelepiped shape, and other suitable shapes are also possible. The shape and the installation position of the lifting lug 11 are not limited to those shown in fig. 1, and other suitable shapes and use positions may be adopted.

Meanwhile, as shown in fig. 2, fig. 3 and fig. 4, the four input terminal positive branch high voltage interfaces 3 penetrate through and are fixedly arranged on the side wall of the box body 1, four branch relays 31 are arranged in the box body 1, and each branch relay 31 is respectively connected with one input terminal positive branch high voltage interface 3. Each branch relay 31 is fixed on the bottom surface of the box body 1 in a threaded manner, and four branch relays 31 are arranged in parallel in order to facilitate the branches to converge on the high-voltage positive input main circuit.

In order to prevent the high-voltage positive input main circuit from being burnt, a main fuse 32 is arranged in the high-voltage positive input main circuit, and the four branch relays 31 are connected in parallel and then connected in series with the main fuse 32. Meanwhile, in order to control the disconnection and connection of the high-voltage positive input main circuit, a main positive relay 33 is connected to the other end of the main fuse 32, and an output end high-voltage interface 36 is connected to the other end of the main positive relay 33, opposite to the end connected to the fuse, and the output end high-voltage interface 36 penetrates through and is fixed on the side wall of the box body 1.

In order to measure the current in the circuit, protect the battery system and prevent the occurrence of overcurrent, a shunt 41 is arranged in the high-voltage loop and is connected with the output end high-voltage interface 36 in series, the other end of the shunt 41 is connected with an input end negative electrode main loop high-voltage interface 4 relative to the end connected with the output end high-voltage interface 36, and the input end negative electrode main loop high-voltage interface 4 penetrates through and is fixedly arranged on the side wall of the box body 1 and is fixedly arranged on the same side wall with the input end positive electrode branch high-voltage interface 3. In order to prevent the main relay from being damaged, a pre-charging group and a pre-charging relay 34 are arranged in the box body 1, and the pre-charging resistor 35 and the pre-charging relay 34 are connected in series and then connected in parallel with the main relay.

The four input end positive pole branch high-voltage interfaces 3 and the four branch relays 31 form four positive pole input branches, the four positive pole input branches are connected in parallel and converged into a high-voltage positive pole input circuit provided with a main fuse 32 and a main positive relay 33, and the high-voltage positive pole input circuit is connected in series with a negative pole input main circuit formed by a shunt 41 and an input end negative pole main circuit high-voltage interface 4 through an output end high-voltage interface 36 to form a main circuit of the BDU of the portable battery replacing bag.

In order to distribute the work of each positive input branch, a battery management system 51 is arranged in the box body 1, the battery management system 51 is tightly attached to one side wall of the box body 1 and is screwed on the bottom surface of the box body 1, the side wall, to which the battery management system 51 is tightly attached, is perpendicular to the side wall of the side wall provided with the output end high-voltage interface 36, and an input end low-voltage communication interface 5 and an output end low-voltage communication interface 52 of the battery management system 51 are respectively and fixedly arranged on different side walls of the box body 1. The battery management system 51 can collect data such as the number of battery packs connected to each positive input branch, temperature and the like, and control the on and off of each shunt relay according to actual conditions, so that the purpose of work distribution is achieved.

The utility model discloses a portable BDU who trades electric battery package sets firmly box 1 in electric automobile earlier when using, then is connected battery package and the anodal branch road high voltage interface 3 of input and input negative pole major loop high voltage interface 4, can normal use. The battery management system 51 can automatically configure the corresponding driving mode for the vehicle according to the collected installation number and identification condition of the battery packs. The battery pack only meets the installation number of 1 branch, and under the condition that the battery packs of other branches are empty, the battery control unit of the battery management system 51 in the BDU can automatically configure a corresponding ECO mode with low output power consumption for the vehicle according to the installation number and the identification condition of the battery packs. When the battery pack meets the installation quantity of all the branches, the battery control unit can automatically configure the vehicle with a SPORT mode with higher dynamic property.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A BDU of portable trade battery package for carry out work distribution to the electrified pond package, its characterized in that includes:

the BDU comprises a box body (1), wherein a box cover (2) is arranged on the box body (1), all electrical components forming the BDU are arranged in the box body (1), and a plurality of positive input branches and a negative input main circuit are arranged in the box body (1);

the main positive relay (33), the said main positive relay (33) is set up in the high-pressure positive pole input main circuit that is connected in series with every said positive pole input branch;

the high-voltage positive pole input circuit comprises a pre-charging relay (34) and a pre-charging resistor (35), wherein the pre-charging relay (34) and the pre-charging resistor (35) are connected in series and are arranged on the high-voltage positive pole input main circuit in parallel with the main positive relay (33);

the main fuse (32) is arranged on the high-voltage positive input main circuit, and the main fuse (32) is arranged between the main positive relay (33) and each positive input branch;

the battery management system (51), battery management system (51) are located in box (1), just input low pressure communication interface (5) and output low pressure communication interface (52) of battery management system (51) are located on the lateral wall of box (1).

2. The BDU of a portable battery replacement pack as claimed in claim 1, wherein: an output end high-voltage interface (36) is arranged on the side wall of the box body (1), and the high-voltage positive input main circuit and the negative input main circuit are both connected with the output end high-voltage interface (36).

3. The BDU of a portable battery replacement pack as claimed in claim 2, wherein: each positive input branch comprises an input end positive branch high-voltage interface (3) and a branch relay (31), and each branch relay (31) is connected in parallel and then is converged into a high-voltage positive input circuit.

4. The BDU of a portable battery replacement pack as claimed in claim 3, wherein: the negative input branch comprises an input end negative general loop high-voltage interface (4) and a shunt (41).

5. The BDU of a portable battery replacement pack as claimed in claim 1, wherein: the outer side wall of the box body (1) is provided with a lifting lug (11).

6. The BDU of a portable battery replacement pack as claimed in claim 5, wherein: the upper end of the box body (1) is provided with a fixing ring along the circumferential outward extension, a plurality of fixing holes are uniformly formed in the fixing ring, a connecting ring is arranged at the lower end of the box cover (2) along the circumferential outward extension, the connecting ring is provided with connecting holes matched with the fixing holes, and a fixing part penetrates through the fixing holes and is screwed in the connecting holes to form the fixing of the box cover (2) on the box body (1).

7. The BDU of a portable battery replacement pack as claimed in claim 6, wherein: and a sealing ring is arranged on the end surface of the fixed ring and the connecting ring.