CN220189838U

CN220189838U - Lithium battery BMS protection board

Info

Publication number: CN220189838U
Application number: CN202321766978.XU
Authority: CN
Inventors: 崔中强; 吴鹏; 钟灿
Original assignee: Hefei Guosheng Battery Technology Co ltd
Current assignee: Hefei Guosheng Battery Technology Co ltd
Priority date: 2023-07-06
Filing date: 2023-07-06
Publication date: 2023-12-15
Anticipated expiration: 2033-07-06

Abstract

The utility model discloses a lithium battery BMS protection plate, which relates to the field of BMS protection plates and comprises a BMS protection plate, wherein a pair of bearing plates contacted with a lithium battery are detachably arranged at the top of the BMS protection plate, a pair of rotatable positioning arms are arranged at two sides of the bearing plates, a compression bar capable of synchronously rotating with the positioning arms is detachably connected at the top of the positioning arms, and when the positioning arms rotate to two sides of the lithium battery, the compression bar is abutted against the upper surface of the lithium battery. According to the utility model, the positioning arm, the pressing rod, the first limiting strip and the second limiting strip are in contact with the lithium battery, so that the clamping operation is implemented on the lithium battery from multiple directions, the compact state of the lithium battery when the lithium battery is used for installing the BMS protection board is improved, and the stable butt joint of the lithium battery and the BMS protection board is ensured. In the installation of lithium battery, through operating the positioning arm, can implement synchronous operation to depression bar, spacing one and spacing two, have the effect to lithium battery quick positioning, improved the installation effectiveness of lithium battery and BMS protection shield.

Description

Lithium battery BMS protection board

Technical Field

The utility model relates to the field of BMS protection plates, in particular to a lithium battery BMS protection plate.

Background

The lithium battery management system is mainly used for protecting the overshoot, over-discharge, over-current, short circuit and other functions of the lithium battery.

The current BMS protection shield that is applied to lithium cell lacks the structure of implementing the location to the lithium cell at the in-process of installing with the lithium cell wiring, and the lithium cell is at the course of the work, and the lithium cell installs and rocks the skew phenomenon easily on the BMS protection shield, influences its two butt joints, the accuracy and the compactness in the installation, leads to the connection stability of two to receive the phenomenon, and then influences the normal operating of lithium cell and BMS protection shield easily.

Disclosure of Invention

In view of the above problems, the present utility model provides a lithium battery BMS protection plate.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a lithium cell BMS protection shield, includes the BMS protection shield, a pair of loading board that contacts with the lithium cell is installed to the top dismantlement formula of BMS protection shield, the both sides of loading board are provided with a pair of rotatable positioning arm, the top dismantlement formula of positioning arm is connected with can rather than synchronous pivoted depression bar, works as when the positioning arm rotates to the lithium cell both sides, the depression bar butt is in the upper surface of lithium cell.

The lithium battery positioning device is characterized by further comprising a first limiting strip and a second limiting strip which are connected through a rotating shaft, wherein the first limiting strip and the second limiting strip are positioned on the inner side of an included angle generated at the supporting leg of the positioning arm and the pressing rod, and the first limiting strip and the second limiting strip can be attached to the surface of the lithium battery along with the rotation of the positioning arm.

Furthermore, the ends of the first limit bar and the second limit bar are respectively connected with a first clamping ring and a second clamping ring through a rotating shaft, grooves in which the first clamping ring and the second clamping ring are arranged are respectively contained in the surfaces of the supporting legs of the positioning arm and the pressing rod, and the first limit bar and the second limit bar are distributed in a V shape in a natural state.

Further, the bottom of the positioning arm at one side is provided with the same positioning rotating shaft in a penetrating way, the side surfaces of the pair of bearing plates are fixedly connected with the extending convex blocks, and the positioning rotating shaft is arranged at the opposite sides of the pair of extending convex blocks through screws.

Further, through holes are formed in the surfaces of the positioning arms, locking rods capable of penetrating through the through holes in a sliding mode are arranged on the inner sides of the through holes, and when the positioning arms rotate to the two sides of the lithium battery, the locking rods and the through holes are located on the same central axis.

Further, the one end that the through-hole was kept away from to the locking pole all is provided with the swinging arms, one side fixedly connected with guide bar that the swinging arms is close to the locking pole, the axis position of locking pole runs through and has offered the passageway that holds the tip of guide bar and put into, the opposite side of locking pole, swinging arms all is dismantled and is connected with the counterpoint ring, two the opposite side fixedly connected with compression spring of counterpoint ring.

Further, one end of the swinging rod far away from the locking rod is connected with a positioning frame through a rotating shaft, the positioning frame is of a U-shaped structure, and the positioning frame is installed on the side face of the bearing plate through screws.

In summary, the utility model has the technical effects and advantages that:

according to the utility model, the positioning arm, the pressing rod, the first limiting strip and the second limiting strip are in contact with the lithium battery, so that the clamping operation is implemented on the lithium battery from multiple directions, the compact state of the lithium battery when the lithium battery is used for installing the BMS protection board is improved, and the stable butt joint of the lithium battery and the BMS protection board is ensured. In the installation of lithium cell, through the operation positioning arm, can implement synchronous operation to depression bar, spacing one and spacing two, reduced the required time of adjusting different position location structures one by one, have the effect to lithium cell quick location, improved the installation effectiveness of lithium cell and BMS protection shield.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic perspective view of the present utility model.

Fig. 2 is a schematic view of a connection structure of a bearing plate, a positioning arm and a compression bar according to the present utility model.

Fig. 3 is an enlarged schematic view of the structure of fig. 3 a according to the present utility model.

FIG. 4 is a schematic view of the connection structure of the locking lever, the positioning frame, the swinging lever and the guide lever of the present utility model.

Fig. 5 is a schematic diagram of the connection structure of the first clamping ring, the first limiting strip, the second clamping ring and the second limiting strip according to the present utility model.

In the figure: 1. BMS protection board; 2. a carrying plate; 3. a positioning arm; 4. a compression bar; 5. positioning a rotating shaft; 6. an extension bump; 7. the clamping ring I is clamped; 8. a first limit bar; 9. a clamping ring II; 10. a second limit bar; 11. a locking lever; 12. a positioning frame; 13. a swinging rod; 14. a guide rod; 15. an alignment ring; 16. and a pressure spring.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. 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.

Examples: referring to fig. 1, a lithium battery BMS protection board that fig. 2 shows, including BMS protection board 1, a pair of loading board 2 that contacts with the lithium battery is installed to the top dismantlement formula of BMS protection board 1, and the both sides of loading board 2 are provided with a pair of rotatable positioning arm 3, and the top dismantlement formula of positioning arm 3 is connected with can rather than synchronous pivoted depression bar 4, and when positioning arm 3 rotated to the lithium battery both sides, depression bar 4 butt was in the upper surface of lithium battery. The positioning arm 3 can prevent the lithium battery on the bearing plate 2 from traversing left and right, the compression bar 4 can keep the tightness of the connection between the lithium battery and the bearing plate 2, compress the lithium battery, avoid the loose phenomenon of the connection between the lithium battery and the BMS protection plate 1,

the lithium battery positioning device further comprises a first limiting strip 8 and a second limiting strip 10 which are connected through a rotating shaft, wherein the first limiting strip 8 and the second limiting strip 10 are located on the inner side of an included angle formed by the positioning arm 3 and the supporting leg of the pressing rod 4, and the first limiting strip 8 and the second limiting strip 10 can be attached to the surface of the lithium battery along with the rotation of the positioning arm 3, so that the phenomenon that the lithium battery slides forwards and backwards can be avoided.

After the positioning arm 3 can enable the compression bar 4, the first limit bar 8 and the second limit bar 10 to be in contact with the lithium battery, clamping operation is carried out on the lithium battery from a plurality of directions, so that the tight state of the lithium battery when the lithium battery is used for installing the BMS protection board 1 can be improved, and stable butt joint of the lithium battery and the BMS protection board 1 is ensured.

Through operation positioning arm 3, can make depression bar 4, spacing first 8 and spacing second 10 and lithium cell contact, have the effect to the quick location of lithium cell, reduced the required time of adjusting different position location structures one by one, improved the installation effectiveness of lithium cell and BMS protection shield 1.

As shown in fig. 2 and 5, the ends of the first limit bar 8 and the second limit bar 10 are respectively connected with a first clamping ring 7 and a second clamping ring 9 through rotating shafts, the surfaces of the support legs of the positioning arm 3 and the pressing rod 4 are respectively provided with grooves in which the first clamping ring 7 and the second clamping ring 9 are arranged, and the first limit bar 8 and the second limit bar 10 are distributed in a V shape in a natural state. If the positioning arm 3 and the compression bar 4 need to be replaced, the first limit bar 8 and the second limit bar 10 can be used for disassembling the compression bar 4 from the positioning arm 3, and the first clamping ring 7 and the second clamping ring 9 can be disassembled from the surface of the support bar of the positioning arm 3 and the compression bar 4, so that the purpose of replacement is achieved, and the portable operation is achieved.

As shown in fig. 2, the bottom of the positioning arm 3 at one side is provided with the same positioning shaft 5 in a penetrating manner, the side surfaces of the pair of bearing plates 2 are fixedly connected with the extending lugs 6, and the positioning shaft 5 is mounted at the opposite sides of the pair of extending lugs 6 through screws. The positioning arm 3 can rotate along the axis of the positioning rotating shaft 5 so as to achieve the purpose of approaching and separating from the lithium battery.

As shown in fig. 3, through holes are formed in the surface of the positioning arm 3, and a locking rod 11 capable of penetrating through the through holes in a sliding manner is arranged on the inner side of each through hole, and when the positioning arm 3 rotates to two sides of the lithium battery, the locking rod 11 and the through holes are located on the same central axis. When the positioning arm 3 rotates to two sides of the lithium battery, the locking rod 11 can slide into the inner side of the through hole formed in the positioning arm 3, so that the positioning arm 3 can be prevented from being deviated. The falling-off phenomenon ensures the stability of the positioning arm 3.

As shown in fig. 3 and 4, one end of the locking rod 11 far away from the through hole is provided with a swinging rod 13, one side of the swinging rod 13 close to the locking rod 11 is fixedly connected with a guide rod 14, a channel for accommodating the end of the guide rod 14 is arranged at the center axis position of the locking rod 11 in a penetrating manner, opposite sides of the locking rod 11 and the swinging rod 13 are detachably connected with alignment rings 15, and opposite sides of the two alignment rings 15 are fixedly connected with pressure springs 16.

The purpose of the pressure spring 16 is to maintain the tightness of the locking bar 11 when it is connected to the through hole, and further, in the process of installing and operating the lithium battery and the BMS protection plate 1, the locking bar 11 is prevented from being separated from the through hole, and the positioning arm 3 and the compression bar 4 are tightly connected to the lithium battery. If the lithium battery needs to be disassembled, the locking rod 11 needs to be pulled to be separated from the through hole, and the positioning arm 3 and the compression rod 4 can be smoothly rotated, so that the purpose of smoothly disassembling the lithium battery is achieved.

As shown in fig. 2 and 3, one end of the swinging rod 13, which is far away from the locking rod 11, is connected with a positioning frame 12 through a rotating shaft, the positioning frame 12 is in a U-shaped structure, and the positioning frame 12 is mounted on the side surface of the bearing plate 2 through screws.

In order to facilitate manual operation of the locking rod 11 at different positions by a worker, after the locking rod 11 is separated from the through hole, the locking rod 11, the guide rod 14 and the swinging rod 13 can be controlled to rotate along the direction of the positioning frame 12, so that the locking rod is far away from the positioning arm 3, and the locking rod 11 separated from the through hole is prevented from sliding into the through hole again under the action of the pressure spring 16. The setting of locating frame 12 ensures that swinging rod 13 and locking rod 11 rotate along the pivot is stable, has further ensured locking rod 11 and through-hole can accurate butt joint when rotating to corresponding with the through-hole.

Finally, it should be noted that: the foregoing description of the preferred embodiments of the present utility model is not intended to be limiting, but rather, although the present utility model has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements or changes may be made without departing from the spirit and principles of the present utility model.

Claims

1. The utility model provides a lithium battery BMS protection shield, includes BMS protection shield (1), its characterized in that: the top of the BMS protection plate (1) is detachably provided with a pair of bearing plates (2) which are in contact with a lithium battery, two sides of the bearing plates (2) are provided with a pair of rotatable positioning arms (3), the top of each positioning arm (3) is detachably connected with a pressing rod (4) which can synchronously rotate with the positioning arms, and when the positioning arms (3) rotate to two sides of the lithium battery, the pressing rods (4) are abutted to the upper surface of the lithium battery;

the lithium battery positioning device is characterized by further comprising a first limiting strip (8) and a second limiting strip (10) which are connected through a rotating shaft, wherein the first limiting strip (8) and the second limiting strip (10) are located on the inner side of an included angle formed by the position of the positioning arm (3) and the support leg of the compression rod (4), and the first limiting strip (8) and the second limiting strip (10) can be attached to the surface of the lithium battery along with the rotation of the positioning arm (3).

2. The lithium battery BMS protection plate according to claim 1, wherein: the end parts of the first limiting strip (8) and the second limiting strip (10) are respectively connected with a first clamping ring (7) and a second clamping ring (9) through rotating shafts, grooves in which the first clamping ring (7) and the second clamping ring (9) are arranged are respectively contained in the surfaces of the supporting legs of the positioning arm (3) and the pressing rod (4), and the first limiting strip (8) and the second limiting strip (10) are distributed in a V shape in a natural state.

3. The lithium battery BMS protection plate according to claim 1, wherein: the bottom of the positioning arm (3) located at one side is provided with the same positioning rotating shaft (5) in a penetrating mode, the side faces of the pair of bearing plates (2) are fixedly connected with the extending protruding blocks (6), and the positioning rotating shaft (5) is installed on the opposite sides of the pair of extending protruding blocks (6) through screws.

4. The lithium battery BMS protection plate according to claim 1, wherein: through holes are formed in the surfaces of the positioning arms (3), locking rods (11) capable of penetrating through the through holes in a sliding mode are arranged on the inner sides of the through holes, and when the positioning arms (3) rotate to two sides of a lithium battery, the locking rods (11) and the through holes are located on the same central axis.

5. The lithium battery BMS protection plate according to claim 4, wherein: the one end that through-hole was kept away from to locking pole (11) all is provided with swinging arms (13), one side fixedly connected with guide bar (14) that swinging arms (13) are close to locking pole (11), the axis position of locking pole (11) runs through and has offered the passageway that holds the tip of guide bar (14) to put into, the opposite side of locking pole (11), swinging arms (13) is all dismantled and is connected with counterpoint ring (15), two opposite side fixedly connected with compression spring (16) of counterpoint ring (15).

6. The lithium battery BMS protection plate according to claim 5, wherein: one end of the swinging rod (13) far away from the locking rod (11) is connected with a positioning frame (12) through a rotating shaft, the positioning frame (12) is of a U-shaped structure, and the positioning frame (12) is arranged on the side face of the bearing plate (2) through a screw.