CN106450080B

CN106450080B - Power battery pack

Info

Publication number: CN106450080B
Application number: CN201610852909.9A
Authority: CN
Inventors: 李鸿键; 王小龙; 盛力; 赵孟; 单长征; 杨槐; 杨振忠; 赵韬征
Original assignee: Changzhou Pride New Energy Cell Technology Co ltd
Current assignee: Changzhou Pride New Energy Cell Technology Co ltd
Priority date: 2016-09-26
Filing date: 2016-09-26
Publication date: 2023-04-07
Anticipated expiration: 2036-09-26
Also published as: CN106450080A

Abstract

The invention provides a power battery pack, which comprises a box body, a BMU (BMU), L-shaped supporting plates and mounting plates, wherein the L-shaped supporting plates are arranged on two sides of the BMU; an entrance and an exit are formed in one side face of the box body, and the mounting plate is mounted on the outer side of the box body and covers the entrance and the exit; one end of the mounting plate is hinged with the box body, and the other end of the mounting plate is detachably connected with the box body; a sliding seat is arranged on the inner side of the mounting plate, a sliding groove is formed in the sliding seat, and the BMU can slide in from one end of the sliding groove through the L-shaped supporting plate; the BMU can enter or pass out of the access opening along with the rotation of the mounting plate. The BMU in the power battery pack does not need to fasten or detach excessive bolts in the mounting and detaching process, can greatly improve the production efficiency, and has simple structure and easy operation.

Description

Power battery pack

Technical Field

The invention relates to the field of electric automobiles, in particular to a power battery pack.

Background

The current global automotive industry faces significant challenges with energy and environmental issues; pure electric vehicles with high energy utilization rate and no environmental pollution increasingly become the development direction of the automobile industry in the future. In the energy conversion period of vehicles in China at present, new energy vehicles are increasing day by day, in each large enterprise, the production efficiency of battery modules and power battery packs in the new energy vehicles is improved, and the production efficiency is determined, however, most of the existing power battery packs are two layers or three layers, BMUs (battery management units) are arranged in boxes on each layer, when the BMUs need to be installed or overhauled, particularly on the middle and lower two layers, because the whole boxes are dismantled and then the BMUs are dismantled, the trouble is very troublesome, the existing mode is that BMU access ports are specially arranged at the front ends of the boxes on each layer, mounting plates are arranged at the access ports to cover the access ports, simultaneously, BMU installs the inboard at the mounting panel, just so can put into and take out BMU from this access & exit along with the dismantlement of mounting panel, but what present BMU installed the fixed mode of box adopted is that four bolts are fixed in the mounting panel, reuse four bolts are fixed in the box outside with the mounting panel, when needs overhaul BMU, only need dismantle 8 bolts and just can take out BMU, also the same during the installation, need fasten 8 bolts, this kind of mode is to the improvement of productivity improvement to some extent, but owing to the bolt that needs the fastening is more, so still more loaded down with trivial details, the installation, it is not high to dismantle efficiency, still become a problem that influences productivity. In addition, in the traditional installation mode, after the installation plate is detached, the installation plate leaves the box body, when the installation is carried out again, the screw hole position of the installation plate needs to be aligned with the installation hole position on the box body, and the installation plate is thin and the BMU is installed on the inner side of the installation plate, so that the installation plate has certain weight, operators cannot easily hold the installation plate, the installation hole position is difficult to align, the problem of low efficiency is also caused, and the production is influenced.

Disclosure of Invention

In order to solve the technical problems, the invention provides a power battery pack, wherein the BMU in the power battery pack does not need to be fastened or disassembled with excessive bolts in the installation and disassembly processes, the production efficiency can be greatly improved, and the power battery pack is simple in structure and easy to operate.

The technical scheme for solving the technical problems is as follows: a power battery pack comprises a box body, a BMU and a mounting plate, wherein the power battery pack is different from the prior art; an entrance and an exit are formed in one side face of the box body, and the mounting plate is mounted on the outer side of the box body and covers the entrance and the exit; one end of the mounting plate is hinged with the box body, and the other end of the mounting plate is detachably connected with the box body; a sliding seat is arranged on the inner side of the mounting plate, a sliding groove is formed in the sliding seat, L-shaped supporting plates are arranged on two sides of the BMU, and the BMU can slide in from one end of the sliding groove through the L-shaped supporting plates; the BMU can enter or pass out of the access opening along with the rotation of the mounting plate.

The BMU fixing device has the beneficial effects that the BMU can slide in the sliding seat on the inner side of the mounting plate, the mounting plate is fixed on the outer side of the box body in a mode of hinging one end of the mounting plate through one section of detachable connection, and the access is sealed, so that the detachable end of the mounting plate can be detached firstly when the BMU is installed, the mounting plate is rotated to a proper angle by utilizing the rotating connection mode of the hinged part, and the BMU slides into the mounting plate along the sliding chute of the sliding seat, the sliding chute not only can play a role of guiding, but also can play a role of fixing the BMU, and after the BMU completely enters the sliding chute, the mounting plate is rotated towards the direction of the box body and is fixed on the box body; when the BMU needs to be disassembled, the operations are carried out according to the reverse order. The power battery pack provided by the invention has the advantages that when the BMU is installed, excessive bolts do not need to be operated, the working efficiency is greatly improved, meanwhile, the mounting plate can be hinged at one end when being disassembled, so that when the BMU is installed or disassembled, the mounting plate is still connected with the box body, the relative position of the mounting plate and the box body is unchanged, when the bolts are fastened again, the mounting plate is attached to the box body by turning over, the mounting hole positions are naturally aligned, and the holes do not need to be aligned by operators, so that the working efficiency is greatly improved.

On the basis of the technical scheme, the invention can be further improved as follows.

Further, the lower extreme of mounting panel with the box is articulated, the mounting panel can be around articulated department upset from beginning to end.

Adopt above-mentioned further technical scheme's beneficial effect to be articulated the lower extreme and the box of mounting panel to make the mounting panel overturn around articulated department, can make things convenient for operating personnel to carry out the inserting and taking out of direction about to the BMU like this.

Further, the lower extreme fixedly connected with round pin axle of mounting panel, fixedly connected with has the fixing base of pinhole on the box, round pin axle can insert in the pinhole and with pinhole cooperation is connected, round pin axle can rotate in the pinhole.

The hinge joint structure has the advantages that the hinge pin is arranged on the mounting plate, the fixing seat with the pin hole is arranged on the box body, the hinge joint between the mounting plate and the box body can be conveniently realized, the processing and the manufacturing are easy, and the cost is lower; in addition, the pin holes are matched and connected with the pin shafts, so that the relative position between the mounting plate and the box body can be ensured to be unchanged, and the mounting efficiency in mounting and dismounting the mounting plate can be improved.

Further, the mounting plate is detachably connected with the box body through screws or bolts.

Adopt above-mentioned further technical scheme's beneficial effect to be fixed through the mode of screw or bolt, can guarantee joint strength, ensure the stability of mounting panel.

Furthermore, the two sliding seats are vertically arranged in parallel, the two opposite side walls of the two sliding seats are provided with the inwards-recessed sliding grooves, the upper ends of the sliding grooves are open, the lower ends of the sliding grooves are closed, and the L-shaped supporting plates on the two sides of the BMU are respectively installed in the two sliding grooves in a sliding mode.

The beneficial effect of adopting above-mentioned further technical scheme is that, two sliding seat correspond one of the L shape backup pad of BMU both sides respectively to L shape backup pad can be followed open one end and inserted, and L shape backup pad is blocked to the confined one end, ensures BMU's stability.

Further, the width of the groove opening of the sliding groove is adapted to the thickness of the L-shaped supporting plate inserted into the sliding groove.

The BMU fixing device has the advantages that the BMU can be fixed better, and damage to the BMU after severe vibration is avoided.

Furthermore, the sliding seat is of a plate-shaped structure and is fixed on the inner side of the mounting plate in a welding or bolt connection mode.

The technical scheme has the advantages that the plate type structure can better realize the guiding function, and simultaneously can ensure compact structure without occupying the space in the box body; the inner surface of the mounting plate is fixed by welding or bolt connection, so that the relative positions of the two sliding seats can be fixed, and the connection strength of the sliding seats and the mounting plate can be ensured.

Furthermore, the open end of at least one of the two sliding seats is provided with a spring piece, the spring piece can be compressed along with the entering of the L-shaped supporting plate, and the spring piece bounces and clamps the L-shaped supporting plate after the L-shaped supporting plate completely enters the sliding groove.

The beneficial effect of adopting above-mentioned further technical scheme is that, utilize the spring leaf to block L shape backup pad, further guarantee that BMU can not vibrate from top to bottom in the course of the work.

Furthermore, the spring leaf is arranged in the sliding groove, one end of the spring leaf is fixedly connected with the groove bottom at the upper end of the sliding groove, and the other end of the spring leaf extends downwards and inclines towards the direction far away from the groove bottom.

The beneficial effect who adopts above-mentioned further technical scheme is that, one end is connected with the tank bottom, and the other end downwardly extending keeps away from the tank bottom gradually, can be so that L shape backup pad when inserting the spout, can compress the spring leaf to the tank bottom along the groove, simultaneously, only need earlier push down the spring leaf to the tank bottom when taking out, can take out BMU, and manufacturing is simple, convenient and reliable.

Drawings

Fig. 1 is a front view of a power battery pack according to the present invention;

FIG. 2 is a top view of the power battery pack shown in FIG. 1;

fig. 3 is a schematic perspective view of the power battery pack shown in fig. 1;

FIG. 4 is a schematic perspective view of another angle of the power battery pack shown in FIG. 1;

FIG. 5 is a schematic perspective view of another angle of the power battery pack shown in FIG. 1;

FIG. 6 is an enlarged view of a portion of FIG. 5 at A;

FIG. 7 is a schematic view of the mounting of the inner side of the mounting plate;

fig. 8 is a schematic perspective view of the mounting plate.

In the drawings, the reference numbers indicate the following list of parts:

1. the device comprises a box body, 2, BMUs, 3, an L-shaped supporting plate, 4, a mounting plate, 5, an inlet and an outlet, 6, a sliding seat, 7, a pin shaft, 8, a fixed seat, 9, screws, 10, spring pieces, 61, a sliding groove, 62 and a groove bottom.

Detailed Description

The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the invention.

As shown in fig. 1 to 8, fig. 1 is a schematic front view of a power battery pack according to the present invention; FIG. 2 is a top view of the power battery pack shown in FIG. 1; fig. 3 is a schematic perspective view of the power battery pack shown in fig. 1; FIG. 4 is a schematic perspective view of another angle of the power battery pack shown in FIG. 1; FIG. 5 is a schematic perspective view of the power battery pack shown in FIG. 1 at yet another angle; FIG. 6 is a partial enlarged view of the portion A in FIG. 5; FIG. 7 is a schematic view of the mounting of the inner side of the mounting plate; fig. 8 is a schematic perspective view of the mounting plate.

In the specific embodiment of the power battery pack provided by the invention, the power battery pack comprises a box body 1 and a BMU 2, wherein L-shaped support plates 3,L-shaped support plates 3Y are generally angle steels and are detachably arranged on two sides of the BMU 2; also comprises a mounting plate 4; an access 5 is formed in one side surface of the box body 1, and the mounting plate 4 is mounted on the outer side of the box body 1 and covers the access 5; one end of the mounting plate 4 is hinged with the box body 1, and the other end of the mounting plate is detachably connected with the box body 1; a sliding seat 6 is arranged on the inner side of the mounting plate 4, a sliding groove 61 is formed in the sliding seat 6, and the BMU 2 can slide in from one end of the sliding groove 61 through the L-shaped supporting plate 3; the BMU 2 may enter or exit the doorway 5 as the mounting plate 4 rotates.

For better extraction of the BMU, the size of the doorway 5 needs to be larger than the overall dimensions of the BMU, but it should not be too large, otherwise the area of the mounting plate would increase.

In this embodiment, the lower end of the mounting plate 4 is hinged to the box body 1, and the mounting plate 4 can be turned back and forth around the hinged position. The hinged parts can also be arranged at the two sides of the entrance, so that the mounting plate can be turned left and right, and the insertion of the BMU can also be realized.

In this embodiment, the lower end of the mounting plate 4 is fixedly connected with a pin 7, the box body 1 is fixedly connected with a fixing seat 8 with a pin hole, the pin 7 can be inserted into the pin hole and is connected with the pin hole in a matching manner, and the pin 7 can rotate in the pin hole.

As shown in the drawing, the round pin axle can the lug weld in the lower extreme in the outside of mounting panel, and fixing base 8 welds in the outside of box, and the cooperation of pinhole and round pin axle can be clearance fit, guarantees to rotate well but does not preferably the clearance too big, otherwise can make the mounting panel produce and rock. In another embodiment, the pin shaft can be fixed on the box body, and the fixing seat with the pin hole can be fixed on the mounting plate, and the principle is the same.

At the lower extreme of mounting panel, also can use the hinge to be connected with the box, the quantity can be one or more.

The mounting panel 4 through screw 9 or bolt with 1 detachable of box is connected, sets up at four each angles, because the box wall is generally thinner, for better fixed mounting panel, can be at the position weld nut of the inboard mounting hole of box, during the installation directly with screw 9 or bolt twist in the nut can, convenient and reliable.

The two sliding seats 6 are vertically arranged, the two opposite side walls of the two sliding seats 6 are provided with the inwards-recessed sliding grooves 61, the upper ends of the sliding grooves 61 are open, the lower ends of the sliding grooves are closed, and the L-shaped supporting plates 3 on two sides of the BMU 2 are respectively inserted into the two sliding grooves 61.

The width of the slot of the slide slot 61 is adapted to the thickness of the L-shaped support plate 3 inserted into the slide slot 61. In order to better ensure that the BMU is more stable after installation, the width of the slot of the slide slot may be slightly larger than the thickness of the L-shaped support plate 3 inserted into the slide slot 61, or a transition fit connection may be used. The sliding seat 6 is of a plate-shaped structure and is fixed on the inner surface of the mounting plate 4 in a welding or bolt connection mode. The open end of at least one of the two sliding seats 6 is provided with a spring piece 10, in order to better ensure that the spring piece blocks the L-shaped supporting plate, the sliding grooves of the sliding seats at two sides are preferably provided with the spring piece 10, the spring piece 10 can be compressed along with the entering of the L-shaped supporting plate 3, and the spring piece 10 bounces and blocks the L-shaped supporting plate 3 after the L-shaped supporting plate 3 completely enters the sliding groove 61. The spring piece 10 is arranged in the sliding groove 61, one end of the spring piece 10 is fixedly connected with the groove bottom 62 at the upper end of the sliding groove 61, and the other end of the spring piece extends downwards and gradually gets away from the groove bottom 62.

To facilitate removal, a handle or other device protruding out of the slot may be provided on the spring plate to facilitate operator depression of the spring plate.

The spring leaf can all set up in the spout, also can partly be outside at the spout in the spout, nevertheless will guarantee that L shape backup pad can block by the spring leaf and just can play a role after sliding into the spout, need calculate in advance when the design in the aspect of the size, will ensure that BMU gets into the spout after L shape backup pad can block but have not too big clearance. The spring plate can be made of metal or plastic, and the specific shape is not limited to only one plate structure as the case may be, and other structures, such as stacked spring plates, etc., can be added.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. A power battery pack comprises a box body (1) and a BMU (2), and is characterized by also comprising a mounting plate (4);

an access (5) is formed in one side face of the box body (1), and the mounting plate (4) is mounted on the outer side of the box body (1) and covers the access (5); one lower end of the mounting plate (4) is hinged with the box body (1), the other end of the mounting plate is detachably connected with the box body (1), and the mounting plate (4) can turn back and forth around the hinged part;

a sliding seat (6) is arranged on the inner side of the mounting plate (4), a sliding groove (61) is formed in the sliding seat (6), L-shaped support plates (3) are mounted on two sides of the BMU (2), the BMU (2) can be slidably mounted in the sliding groove (61) through the L-shaped support plates (3) and then is arranged on the inner side of the mounting plate, and the L-shaped support plates (3) are angle steels and are detachably mounted on two sides of the BMU (2);

the BMU (2) can enter or pass out of the access opening (5) along with the rotation of the mounting plate (4);

the lower end of the mounting plate (4) is fixedly connected with a pin shaft (7), a fixed seat (8) with a pin hole is fixedly connected to the box body (1), and the pin shaft (7) can be inserted into the pin hole and is matched with the pin hole to be in rotating connection;

the upper end of the mounting plate (4) is detachably connected with the box body (1) through a screw (9) or a bolt;

the two sliding seats (6) are vertically arranged in parallel, the two opposite side walls of the two sliding seats (6) are provided with the inwards-recessed sliding grooves (61), the upper ends of the sliding grooves (61) are open, the lower ends of the sliding grooves are closed, and the L-shaped supporting plates (3) on two sides of the BMU (2) are respectively inserted into the corresponding sliding grooves (61) from the upper ends of the sliding grooves (61) and are installed in the sliding grooves (61) in a sliding mode;

the width of the notch of the sliding groove (61) is adapted to the thickness of the L-shaped supporting plate (3) inserted into the sliding groove (61);

the sliding seat (6) is of a plate-shaped structure and is fixed on the inner side of the mounting plate (4) in a welding or bolt connection mode;

a spring piece (10) is arranged at the open end of at least one of the two sliding seats (6), the spring piece (10) can be compressed along with the entering of the L-shaped supporting plate (3), and the spring piece (10) bounces up and blocks the L-shaped supporting plate (3) after the L-shaped supporting plate (3) completely enters the sliding groove (61);

the spring piece (10) is arranged in the sliding groove (61), one end of the spring piece (10) is fixedly connected with a groove bottom (62) at the upper end of the sliding groove (61), and the other end of the spring piece extends downwards and inclines towards the direction far away from the groove bottom (62).