Lithium battery pack

Abstract

The utility model relates to the technical field of battery pack installation, in particular to a lithium battery pack which comprises a battery pack placing frame, a placing cavity is arranged in the middle of the battery pack placing frame, a plurality of battery installing plates are placed in the placing cavity, the upper ends of the battery installing plates are fixedly connected with a front end plate, and the front end plate is fixedly connected with a conducting strip. A plurality of positioning grooves are formed in the upper end of the battery pack placing frame, a battery mounting cavity is formed in the middle of the battery mounting plate, a fixing frame is fixedly connected to the inner wall of the battery mounting cavity, the fixing frame is of a square structure, and a fixing groove is formed in the side wall of the battery mounting cavity; an auxiliary plate is arranged in the fixing groove, the auxiliary plate is composed of a fixing part, a deformation part and a connecting part, the upper end of the battery mounting plate is connected with a lifting part in an inserted mode, and the lower end of the lifting part is fixedly connected with a traction plate, the heat dissipation effect of the battery pack can be improved, and meanwhile damaged battery blocks can be conveniently taken out for maintenance.

Description

Technical Field

[0001] This utility model relates to the field of battery pack installation technology, specifically a lithium battery pack. Background Technology

[0002] Currently, new energy vehicle batteries are divided into three structures: prismatic, cylindrical, and pouch. Each structure has significant advantages in different aspects, so different battery structures are adopted when designing a vehicle due to different design concepts. Existing prismatic batteries are placed inside modules, but adjacent modules are pressed against each other, preventing the heat generated during battery operation from being dissipated in time. Furthermore, when the battery pack malfunctions, the faulty battery cell cannot be removed, making maintenance time-consuming and labor-intensive. Utility Model Content

[0003] The purpose of this invention is to provide a lithium battery pack to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a lithium battery pack, including a battery pack placement frame, a placement cavity in the middle of the battery pack placement frame, multiple battery mounting plates placed in the placement cavity, a front end plate fixedly connected to the upper end of the battery mounting plate, a conductive sheet fixedly connected to the front end plate, a conductive strip on the battery pack placement frame, the conductive sheet and the conductive strip connected, multiple positioning grooves at the upper end of the battery pack placement frame, a battery mounting cavity in the middle of the battery mounting plate, a fixing frame fixedly connected to the inner wall of the battery mounting cavity, the fixing frame having a U-shaped structure, a fixing groove on the side wall of the battery mounting cavity, an auxiliary plate in the fixing groove, the auxiliary plate consisting of a fixing part, a deformable part and a connecting part, a lifting member inserted into the upper end of the battery mounting plate, and a traction plate fixedly connected to the lower end of the lifting member.

[0005] Preferably, one end of the auxiliary plate is located inside the fixed frame, and the other end of the auxiliary plate is located inside the fixed groove, and the fixed part is fixedly connected to the fixed groove by bolts.

[0006] Preferably, the deformable part is formed by stamping, the deformable part has an inclined structure, the auxiliary plate is an elastic iron plate, the side end of the fixing frame is provided with a slot, and when the battery mounting plate is inserted into the placement cavity, the connecting part abuts against the slot.

[0007] Preferably, the lower end of the lifting member is located in the fixing groove, and the lower end of the traction plate has a U-shaped structure.

[0008] Preferably, a guide plate is fixedly connected to the side end of the connecting part. The guide plate has an arc-shaped structure, and the lower end of the traction plate is engaged with the guide plate.

[0009] Preferably, the lower end of the front-end plate has a stepped structure, and the lower end of the front-end plate is engaged with the positioning groove.

[0010] Compared with the prior art, the beneficial effects of this utility model are: the deformable part creates a certain gap between the battery mounting plates, ensuring the heat dissipation of the battery pack during operation; when the battery pack is impacted, the deformable part can buffer the impact, increasing the safety of the battery pack; the auxiliary plate can connect the battery mounting plates into a whole, increasing the stability of the battery pack. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the lithium battery pack connection.

[0012] Figure 2 This is a schematic diagram of the connection of a single battery block.

[0013] In the figure: 1 Battery pack placement frame, 2 Placement cavity, 3 Positioning groove, 4 Battery mounting plate, 5 Conductive sheet, 6 Conductive strip, 7 Fixing frame, 8 Battery mounting cavity, 9 Auxiliary plate, 91 Fixing part, 92 Deformable part, 93 Connecting part, 10 Fixing groove, 11 Guide plate, 12 Traction plate, 13 Lifting piece, 14 Front end plate. Detailed Implementation

[0014] To enhance understanding of this utility model, the technical solutions in the embodiments of this utility model will be clearly and completely described and introduced below with reference to the accompanying drawings. Obviously, the described embodiments are merely some embodiments of this utility model, not all embodiments, and are not intended to limit the embodiments in any way. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0015] Please see Figure 1-2This utility model provides a technical solution: a lithium battery pack, including a battery pack placement frame 1, a placement cavity 2 in the middle of the battery pack placement frame 1, multiple battery mounting plates 4 placed in the placement cavity 2, a front end plate 14 fixedly connected to the upper end of the battery mounting plate 4, a conductive sheet 5 fixedly connected to the front end plate 14, a conductive strip 6 on the battery pack placement frame 1, the conductive sheet 5 and the conductive strip 6 connected, multiple positioning grooves 3 at the upper end of the battery pack placement frame 1, a battery mounting cavity 8 in the middle of the battery mounting plate 4, a fixing frame 7 fixedly connected to the inner wall of the battery mounting cavity 8, the fixing frame 7 having a U-shaped structure, and the battery mounting cavity 8... A fixing groove 10 is provided on the side wall, and an auxiliary plate 9 is provided in the fixing groove 10. The auxiliary plate 9 is composed of a fixing part 91, a deformable part 92 and a connecting part 93. A lifting member 13 is inserted into the upper end of the battery mounting plate 4, and a traction plate 12 is fixedly connected to the lower end of the lifting member 13. The lower end of the front plate 14 has a stepped structure, and the lower end of the front plate 14 is snapped into the positioning groove 3. When installing the battery block, the battery mounting plate 4 is inserted into the placement cavity 2, and the front plate 14 is positioned and connected to the positioning groove 3. The front plate 14 is connected to the positioning groove 3 by bolts or buckles. The battery mounting plates 4 are independent of each other, which facilitates subsequent maintenance.

[0016] One end of the auxiliary plate 9 is located inside the fixed frame 7, and the other end of the auxiliary plate 9 is located inside the fixed groove 10. The fixed part 91 is fixedly connected to the fixed groove 10 by bolts. The battery block is snapped into the battery mounting cavity 8, and then the auxiliary plate 9 is connected to the fixed groove 10. The battery block is fixed by the cooperation of the auxiliary plate 9 and the fixed frame 7.

[0017] The deformable part 92 is formed by stamping and has an inclined structure. The auxiliary plate 9 is an elastic iron plate. The side end of the fixing frame 7 is provided with a slot. When the battery mounting plate 4 is inserted into the placement cavity 2, the connecting part 93 abuts against the slot, thereby connecting the battery mounting plates 4 into a whole, increasing the stability of the battery pack. During installation, the deformable part 92 can assist in guiding the battery mounting plates. At the same time, the deformable part 92 creates a certain gap between the battery mounting plates 4 to ensure the heat dissipation of the battery pack during operation. In addition, when the battery pack is impacted, the deformable part 92 can cushion the impact and increase the safety of the battery pack.

[0018] The lower end of the lifting member 13 is located within the fixing groove 10. The lower end of the traction plate 12 has a U-shaped structure. A guide plate 11 is fixedly connected to the side end of the connecting part 93. The guide plate 11 has an arc-shaped structure. The lower end of the traction plate 12 is engaged with the guide plate 11. When it is necessary to remove the damaged battery block, the lifting member 13 is pulled. The lifting member 13 drives the traction plate 12 to move upward. The traction plate 12 drives the deformation part 93 to deform through the guide plate 11, thereby removing the connecting part 93 from the groove and removing the battery mounting plate 4 containing the damaged battery block.

[0019] Although embodiments of the present invention have been shown and described, it should be emphasized that the above description is merely an introduction and description of the usage of the embodiments of the present invention, and is not intended to limit the present invention in any way. Those skilled in the art will understand that various changes, modifications, substitutions, and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A lithium battery pack, comprising a battery pack placement frame (1), characterized in that: The battery pack placement frame (1) has a placement cavity (2) in the middle, and multiple battery mounting plates (4) are placed in the placement cavity (2). A front end plate (14) is fixedly connected to the upper end of the battery mounting plate (4), and a conductive sheet (5) is fixedly connected to the front end plate (14). A conductive strip (6) is provided on the battery pack placement frame (1), and the conductive sheet (5) and the conductive strip (6) are connected. The upper end of the battery pack placement frame (1) has multiple positioning grooves (3), and the battery is placed in the middle of the battery mounting plate (4). The battery mounting cavity (8) has a fixed frame (7) fixedly connected to its inner wall. The fixed frame (7) has a U-shaped structure. The side wall of the battery mounting cavity (8) is provided with a fixed groove (10). The fixed groove (10) is provided with an auxiliary plate (9). The auxiliary plate (9) is composed of a fixed part (91), a deformable part (92), and a connecting part (93). The upper end of the battery mounting plate (4) is inserted with a lifting member (13). The lower end of the lifting member (13) is fixedly connected with a traction plate (12).

2. A lithium battery pack according to claim 1, characterized in that: One end of the auxiliary plate (9) is located inside the fixed frame (7), and the other end of the auxiliary plate (9) is located inside the fixed groove (10). The fixed part (91) is fixedly connected to the fixed groove (10) by bolts.

3. A lithium battery pack according to claim 1, characterized in that: The deformable part (92) is formed by stamping and has an inclined structure. The auxiliary plate (9) is an elastic iron plate. The side end of the fixed frame (7) is provided with a slot. When the battery mounting plate (4) is inserted into the placement cavity (2), the connecting part (93) abuts against the slot.

4. A lithium battery pack according to claim 1, characterized in that: The lower end of the lifting member (13) is located in the fixing groove (10), and the lower end of the traction plate (12) has a U-shaped structure.

5. A lithium battery pack according to claim 1, characterized in that: The side end of the connecting part (93) is fixedly connected to a guide plate (11), which has an arc-shaped structure, and the lower end of the traction plate (12) is engaged with the guide plate (11).

6. A lithium battery pack according to claim 1, characterized in that: The lower end of the front end plate (14) has a stepped structure, and the lower end of the front end plate (14) is engaged with the positioning groove (3).

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