Lithium battery shell convenient for BMS (Battery Management System) maintenance

Abstract

The utility model discloses a lithium battery shell convenient for BMS maintenance, which comprises a plastic lower shell, a plastic upper cover is tightly arranged at the top of the plastic lower shell, an upper cover plate is laid on the plastic upper cover, an insertion rod is fixedly mounted on the lower surface of the upper cover plate, the insertion rod is inserted into an embedded connecting frame, and the embedded connecting frame is fixedly connected with the plastic upper cover. The embedded connecting frame is fixedly arranged in a rectangular groove in the top of the plastic upper cover, and a connecting plate is fixedly arranged in the embedded connecting frame. According to the utility model, the battery pack sealing glue can be fixed in the plastic lower shell, the BMS is fixedly arranged in the mounting groove on the plastic upper cover, and the cover plate of the subsequent upper cover is tightly and fixedly arranged on the plastic upper cover through the fixing screws, so that the structure can be applied, and when the BMS needs to be maintained, only the fixing screws need to be unscrewed, and the BMS can be maintained. When the BMS is installed, the upper cover plate can be taken down from the plastic upper cover, so that the BMS can be replaced and maintained and can be installed and restored subsequently, and the outside of the structure cannot be damaged.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium battery cases, in particular to a lithium battery case facilitating BMS maintenance. Background Technique

[0002] As a key component of the battery system, the battery case plays a role in fixing and fully sealing the internal electrochemical system. The structural strength, heat dissipation and other performance of the case are important indicators for measuring the working ability of the battery. With the needs of practical applications, higher requirements are put forward for the energy density, safety and cycle life of the battery.

[0003] At present, due to the advantages of large energy density and low environmental pollution compared with lead-acid batteries, lithium batteries are gradually replacing lead-acid batteries with the advantage of intelligent management and control of equipment information interaction. However, since the original equipment used lead-acid batteries and the lead-acid case cannot be opened without damage after capping, when using a lead-acid case for a lithium battery, it is very inconvenient for personnel to maintain the BMS of the lithium battery without damaging the case. Therefore, we propose a lithium battery case facilitating BMS maintenance to solve the above problems. Content of the Utility Model

[0004] The purpose of the utility model is to provide a lithium battery case facilitating BMS maintenance to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A lithium battery case facilitating BMS maintenance, including a plastic lower case, a plastic upper cover is tightly arranged on the top of the plastic lower case, an upper cover plate is laid on the plastic upper cover, a plug rod is fixedly installed on the lower surface of the upper cover plate, the plug rod is inserted into an embedded connecting frame, the embedded connecting frame is fixedly arranged in a rectangular groove on the top of the plastic upper cover, a connecting plate is fixedly arranged in the embedded connecting frame, a fixing screw is meshed and connected in the connecting plate and is inside the embedded connecting frame, the fixing screw is close to the upper surface of the upper cover plate, a power quantity light bar is fixedly arranged on the upper cover plate, and a charging and discharging electrode pile and a communication connector are respectively arranged on the top and the outside of the plastic upper cover.

[0006] As a further preference of the above technical solution, a cover plate sealing ring abuts against the lower surface of the upper cover plate, the cover plate sealing ring is arranged at the top position of the embedded connecting frame, and the cover plate sealing ring is fixedly arranged on the top of the embedded connecting frame by glue.

[0007] As a further preference of the above technical solution, the power quantity light bar is meshed and connected to the upper surface position of the upper cover plate by a fastening bolt, and the plastic lower case and the plastic upper cover are fixedly connected by sealing glue.

[0008] As a further preference of the present technical solution, the top of the plastic lower case and the bottom of the plastic upper cover are of a concave-convex structure.

[0009] As a further preference of the present technical solution, there are two compartments between the plastic lower case and the plastic upper cover, namely the battery pack compartment and the BMS compartment. The battery pack compartment is located inside the plastic lower case, and the BMS is located inside the plastic upper cover.

[0010] As a further preference of the present technical solution, triangular grooves and T-shaped grooves are respectively formed on the outer side of the plastic upper cover. The triangular grooves and the T-shaped grooves are connected to each other. A bottom plate abuts against the triangular grooves, and a vertical plate is inserted into the T-shaped grooves. The vertical plate is fixedly installed on the top of the bottom plate, and the top end of the vertical plate is rotatably connected to a handle member, and the handle member is located above the plastic upper cover.

[0011] As a further preference of the present technical solution, the handle member is arc-shaped and is made of polyurethane material.

[0012] The utility model provides a lithium battery shell convenient for BMS maintenance, having the following beneficial effects:

[0013] The battery pack of the utility model can be fixed in the plastic lower case by sealing glue, and the BMS is fixedly installed in the installation groove on the plastic upper cover. Subsequently, the upper cover plate is tightly fixed on the plastic upper cover by fixing screws, and then this structure can be applied. When the BMS needs to be repaired, only the fixing screws need to be unscrewed, and the upper cover plate can be removed from the plastic upper cover, so as to replace and maintain the BMS. After that, it can be installed and restored, and the outside of this structure will not be damaged.

[0014] By setting this structure, when the structure needs to be carried by personnel, the vertical plate is rotated and toggled. Thus, the bottom plate and the vertical plate can be respectively placed inside the triangular grooves and the T-shaped grooves. Subsequently, the bottom plate is rotated, and the handle member can be restricted above the plastic upper cover, so as to facilitate the personnel to carry this structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a front view schematic diagram of the structure in the separated state of the utility model;

[0016] Figure 2 For the utility model Figure 1 The enlarged schematic diagram of the structure of A in;

[0017] Figure 3 It is the enlarged schematic diagram of the structure of the bottom plate and the vertical plate of the utility model.

[0018] In the figure: 1. Plastic lower shell; 2. Plastic upper cover; 3. Upper cover plate; 4. Plug rod; 5. Embedded connecting frame; 6. Connecting plate; 7. Fixing screw; 8. Cover plate sealing ring; 9. Battery level light bar; 10. Charge and discharge electrode pile; 11. Communication connector; 12. Triangular groove; 13. T-shaped groove; 14. Bottom plate; 15. Vertical plate; 16. Handle part. Specific implementation manner

[0019] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention.

[0020] The present invention provides a technical solution: As Figure 1 and Figure 2As shown in the figure, in this embodiment, a lithium battery case facilitating BMS maintenance includes a plastic lower case 1. A plastic upper cover 2 is tightly arranged on the top of the plastic lower case 1. An upper cover plate 3 is laid on the plastic upper cover 2. A plug rod 4 is fixedly installed on the lower surface of the upper cover plate 3. The plug rod 4 is inserted into an embedded connecting frame 5. The embedded connecting frame 5 is fixedly arranged in a rectangular groove on the top of the plastic upper cover 2. A connecting plate 6 is fixedly arranged in the embedded connecting frame 5. A fixing screw 7 is meshed and connected in the connecting plate 6, and the fixing screw 7 is inside the embedded connecting frame 5. The fixing screw 7 is close to the upper surface of the upper cover plate 3. A power quantity light bar 9 is fixedly arranged on the upper cover plate 3. Charging and discharging electrode terminals 10 and communication connectors 11 are respectively arranged on the top and the outside of the plastic upper cover 2. The battery pack can be sealed and fixed inside the plastic lower case 1, and the BMS is fixedly installed in an installation groove on the plastic upper cover 2. Subsequently, the upper cover plate 3 is tightly fixed on the plastic upper cover 2 through the fixing screw 7, and then this structure can be applied. When the BMS needs to be repaired, only the fixing screw 7 needs to be unscrewed, and then the upper cover plate 3 can be taken off from the plastic upper cover 2, so as to replace and maintain the BMS. After that, it can be installed and restored, and the outside of this structure will not be damaged. A cover plate sealing ring 8 abuts against the lower surface of the upper cover plate 3. The cover plate sealing ring 8 is arranged at the top position of the embedded connecting frame 5. The cover plate sealing ring 8 is fixedly arranged on the top of the embedded connecting frame 5 through glue. By arranging the cover plate sealing ring 8, it can play a role in waterproofing and dustproofing between the plastic upper cover 2 and the upper cover plate 3. The power quantity light bar 9 is meshed and connected to the upper surface position of the upper cover plate 3 by fastening bolts. The plastic lower case 1 and the plastic upper cover 2 are fixedly connected by glue for sealing, which is convenient for personnel to overhaul and replace the power quantity light bar 9 under long-term use, and is also easy for personnel to disassemble the plastic lower case 1 and the plastic upper cover 2 without damage. The top of the plastic lower case 1 and the bottom of the plastic upper cover 2 are of a concave-convex structure, which is not only convenient for personnel to apply glue, but also beneficial for the plastic upper cover 2 to be sleeved on the top of the plastic lower case 1 at one time. There are two compartments between the plastic lower case 1 and the plastic upper cover 2, namely the battery pack compartment and the BMS compartment. The battery pack compartment is inside the plastic lower case 1, and the BMS is inside the plastic upper cover 2, which helps to fix the position of the battery pack compartment and achieve the purpose of a lithium battery case facilitating BMS maintenance.

[0021] As Figure 1 and Figure 3As shown, triangular grooves 12 and T-shaped grooves 13 are respectively formed on the outer side of the plastic upper cover 2. The triangular groove 12 and the T-shaped groove 13 are communicated with each other. A bottom plate 14 abuts against the triangular groove 12. A vertical plate 15 is inserted into the T-shaped groove 13. The vertical plate 15 is fixedly installed at the top of the bottom plate 14. The top end of the vertical plate 15 is rotatably connected with a handle member 16. The handle member 16 is located above the plastic upper cover 2. The handle member 16 is arc-shaped in appearance and is made of polyurethane material. By providing this structure, when personnel need to carry this structure, the vertical plate 15 is rotated and toggled, so that the bottom plate 14 and the vertical plate 15 can be respectively placed inside the triangular groove 12 and the T-shaped groove 13. Then, the bottom plate 14 is rotated, so that the handle member 16 can be restricted above the plastic upper cover 2, thereby facilitating personnel to carry this structure.

[0022] The present invention provides a lithium battery case facilitating BMS maintenance, and the specific working principle is as follows:

[0023] During the use of the device, the battery pack is placed inside the plastic lower case 1 and sealed with glue. Then, the BMS is fixedly installed in the installation groove on the plastic upper cover 2. Then, glue is applied to the top of the plastic lower case 1, and the plastic upper cover 2 can be sealed on the top of the plastic lower case 1. During a subsequent period, when the BMS needs to be repaired, only the fixing screw 7 needs to be unscrewed, and the upper cover plate 3 can be removed from the plastic upper cover 2, so as to replace and maintain the BMS. Then, it can be installed and restored, without causing damage to the outside of this structure. When this mechanism needs to be carried, the vertical plate 15 is rotated and toggled, so that the bottom plate 14 and the vertical plate 15 can be respectively placed inside the triangular groove 12 and the T-shaped groove 13. Then, the bottom plate 14 is rotated, so that the handle member 16 can be restricted above the plastic upper cover 2, thereby facilitating carrying this structure.

[0024] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A lithium battery housing that facilitates BMS maintenance, characterized in that: The invention comprises a plastic lower shell (1), the top of which is tightly provided with a plastic upper cover (2), the upper cover (2) is provided with an upper cover plate (3), the lower surface of which is fixedly provided with an insertion rod (4), the insertion rod (4) is inserted into an inner part of an embedded connecting frame (5), the embedded connecting frame (5) is fixedly provided in a rectangular groove at the top of the plastic upper cover (2), a connecting plate (6) is fixedly provided in the embedded connecting frame (5), a fixing screw (7) is meshedly connected in the connecting plate (6), and the fixing screw (7) is located in the inner part of the embedded connecting frame (5), the fixing screw (7) is tightly attached to the upper surface of the upper cover plate (3), a power light bar (9) is fixedly provided on the upper cover plate (3), and a charging and discharging electrode pile (10) and a communication connector (11) are respectively provided on the top and the outer side of the plastic upper cover (2).

2. A lithium battery housing that is convenient for BMS maintenance according to claim 1, characterized in that: The lower surface of the upper cover plate (3) is in contact with a cover plate sealing ring (8), and the cover plate sealing ring (8) is arranged at the top position of the embedded connecting frame (5). The cover plate sealing ring (8) is fixed on the top of the embedded connecting frame (5) by glue.

3. A lithium battery housing that is convenient for BMS maintenance according to claim 1, characterized in that: The power light bar (9) is arranged on the upper surface of the upper cover plate (3) by means of a fastening bolt engagement connection, and the plastic lower shell (1) and the plastic upper cover (2) are sealed and fixedly connected by means of glue.

4. A lithium battery housing that facilitates BMS maintenance according to claim 1, characterized in that: There is a concave-convex structure between the top of the plastic lower shell (1) and the bottom of the plastic upper cover (2).

5. A lithium battery housing that is convenient for BMS maintenance according to claim 1, characterized in that: Two compartments are provided between the plastic lower shell (1) and the plastic upper cover (2), the two compartments being a battery pack compartment and a BMS compartment respectively. The battery pack compartment is located in the plastic lower shell (1), and the BMS is located in the plastic upper cover (2).

6. A lithium battery housing that facilitates BMS maintenance according to claim 1, characterized in that: The outer side of the plastic upper cover (2) is respectively provided with a triangular groove (12) and a T-shaped groove (13), the triangular groove (12) and the T-shaped groove (13) are connected, the triangular groove (12) is in contact with a bottom plate (14), a vertical plate (15) is inserted into the T-shaped groove (13), the vertical plate (15) is fixedly mounted on the top of the bottom plate (14), the top of the vertical plate (15) is rotatably connected with a handle (16), and the handle (16) is located above the plastic upper cover (2).

7. A lithium battery housing that facilitates BMS maintenance according to claim 6, characterized in that: The handle (16) is arranged to be in an arc shape, and the handle (16) is made of polyurethane material.

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