Outdoor cold-resistant lithium battery pack

Abstract

The utility model belongs to the technical field of outdoor lithium battery packs, and particularly relates to an outdoor cold-resistant lithium battery pack which comprises a protective shell, the lower end of the protective shell is fixedly connected with a shell bottom, the upper end of the shell bottom is in contact with a lithium battery pack body, the lithium battery pack body is located in the protective shell, and the inner wall of the protective shell is slidably connected with a telescopic rod. The end face of the side, away from the lithium battery pack body, of the telescopic rod is fixedly connected with an end rod, the end face of the side, close to the lithium battery pack body, of the end rod is fixedly connected with a connecting piece, and the connecting piece is slidably connected with the shell bottom. The lithium battery pack body is pushed to be inserted into the protective shell, so that the lithium battery pack body is in contact with the shell bottom, and under the deformation action of the elastic piece, the telescopic rod can drive the connecting piece to move, so that the silica gel heating film is in contact with the lithium battery pack body to heat the lithium battery pack body, and a good outdoor cold-resistant effect is ensured.

Description

Technical Field

[0001] This utility model relates to the field of outdoor lithium battery pack technology, specifically an outdoor cold-resistant lithium battery pack. Background Technology

[0002] As is well known, outdoor lithium battery packs are high-efficiency energy solutions designed for outdoor activities, emergency power supply, mobile devices, and other scenarios, featuring high energy density, long lifespan, and portability.

[0003] A utility model patent with patent authorization announcement number CN219458724U discloses an outdoor lithium battery pack, including a main body, an output connection mechanism located at its upper end, a display mechanism located at the upper end of the output connection mechanism, a photovoltaic battery pack body, a lower protective shell installed at the lower end of the photovoltaic battery pack body, a first mounting screw hole set at the lower end of the lower protective shell, the first mounting screw hole corresponding to the photovoltaic battery pack body, a second fixing nut installed at the lower end of the lower protective shell, and an upper protective shell, the upper protective shell being installed at the upper end of the photovoltaic battery pack body, a second mounting screw hole set at the upper end of the upper protective shell, the second mounting screw hole corresponding to the photovoltaic battery pack body, a second mounting nut installed at the upper end of the second mounting screw hole.

[0004] However, existing outdoor lithium battery packs also have certain shortcomings. Most existing outdoor lithium battery packs use their own casing to protect and keep the cells warm. Since the outdoor temperature is low in the cold season and the discharge efficiency of the cells is greatly affected by the temperature, this will seriously affect the performance of the outdoor lithium battery pack. Utility Model Content

[0005] The purpose of this utility model is to provide an outdoor cold-resistant lithium battery pack, which solves the problem that existing outdoor lithium battery packs mostly use their own casing to protect and keep the cells warm. However, due to the low outdoor temperature in the cold season and the fact that the discharge efficiency of the cells is greatly affected by the temperature, the performance of outdoor lithium battery packs is poor.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an outdoor cold-resistant lithium battery pack, including a protective shell, a shell bottom fixedly connected to the lower end of the protective shell, a lithium battery pack body contacting the upper end of the shell bottom, the lithium battery pack body located inside the protective shell, a telescopic rod slidably connected to the inner wall of the protective shell, an end rod fixedly connected to the end face of the telescopic rod away from the lithium battery pack body, a connecting piece fixedly connected to the end face of the end rod near the lithium battery pack body, the connecting piece slidably connected to the shell bottom, a silicone heating film fixedly installed on the end face of the connecting piece near the lithium battery pack body, and a locking mechanism provided on the protective shell.

[0007] Preferably, the end rod has multiple friction grooves on its side, which are evenly distributed on the end rod. The friction grooves facilitate the user to pull the end rod for movement and use.

[0008] Preferably, an elastic element is bonded to the end face of the end rod near the protective shell, and the other end of the elastic element is bonded to the protective shell. The end rod can be connected and used by means of the elastic element.

[0009] Preferably, the silicone heating film is slidably connected to the bottom of the shell, and the silicone heating film is in contact with the lithium battery pack body. By setting the silicone heating film, the lithium battery pack body can be heated.

[0010] Preferably, the locking mechanism includes a limiting block. The limiting block is fixedly connected to the inner wall of the protective shell and contacts the lithium battery pack body. A mounting bracket is fixedly connected to the end face of the protective shell. A screw is rotatably connected to the inner wall of the mounting bracket. A moving block is threadedly connected to the outer side of the screw and slidably connected to the protective shell. A locking plate is fixedly connected to the end face of the moving block near the lithium battery pack body and contacts the lithium battery pack body. A limiting piece is fixedly sleeved on the outer side of the screw and rotatably connected to the mounting bracket. Driven by the screw, the moving block can move the locking plate, thereby locking and limiting the lithium battery pack body, ensuring the lithium battery pack body is in a stable state.

[0011] Preferably, two limiting blocks are provided, and the two limiting blocks are symmetrically distributed on the protective shell. By setting the limiting blocks, the lithium battery pack body can be guided.

[0012] Preferably, a handle is fixedly connected to the end face of the screw. The handle is made of hard rubber. The handle facilitates the rotation of the screw, and the hard rubber material has good skin-friendliness and durability.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] 1. This utility model pushes the lithium battery pack body into the protective shell, so that the lithium battery pack body contacts the bottom of the shell. Under the deformation of the elastic element, the telescopic rod can drive the connecting piece to move, thereby making the silicone heating film contact the lithium battery pack body and heat the lithium battery pack body to ensure good outdoor cold resistance.

[0015] 2. This utility model, through the setting of the limiting block, can guide and limit the lithium battery pack body. With the handle, screw and other structures, the moving block can be driven to move the locking plate to lock the lithium battery pack body, so as to ensure the stability of the lithium battery pack body installation. Attached Figure Description

[0016] Figure 1 This is a perspective view of the overall structure of this utility model;

[0017] Figure 2 For the present utility model Figure 1 Top view;

[0018] Figure 3 For the present utility model Figure 1 A schematic diagram of the internal structure of the protective shell;

[0019] Figure 4 For the present utility model Figure 3 Enlarged view of the locking mechanism.

[0020] In the diagram: 1. Protective shell; 2. Shell bottom; 3. Lithium battery pack body; 4. Telescopic rod; 5. End rod; 6. Elastic element; 7. Connecting piece; 8. Silicone heating film; 9. Locking mechanism; 91. Limiting block; 92. Mounting bracket; 93. Screw; 94. Moving block; 95. Locking plate; 96. Limiting piece; 97. Handle. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 An outdoor cold-resistant lithium battery pack includes a protective shell 1. The lower end of the protective shell 1 is fixedly connected to a shell bottom 2. The upper end of the shell bottom 2 contacts a lithium battery pack body 3. The lithium battery pack body 3 is located inside the protective shell 1. A telescopic rod 4 is slidably connected to the inner wall of the protective shell 1. An end rod 5 is fixedly connected to the end face of the telescopic rod 4 away from the lithium battery pack body 3. A connecting piece 7 is fixedly connected to the end face of the end rod 5 near the lithium battery pack body 3. The connecting piece 7 is slidably connected to the shell bottom 2. A silicone heating film 8 is fixedly installed on the end face of the connecting piece 7 near the lithium battery pack body 3.

[0023] Please see Figure 1 , Figure 2 , Figure 3Multiple friction grooves are provided on the side of the end rod 5. The friction grooves are evenly distributed on the end rod 5. The friction grooves make it easy for the user to pull the end rod 5 for movement. An elastic element 6 is glued to the end face of the end rod 5 near the protective shell 1. The other end of the elastic element 6 is glued to the protective shell 1. The end rod 5 can be connected and used through the setting of the elastic element 6. The silicone heating film 8 is slidably connected to the bottom shell 2. The silicone heating film 8 is in contact with the lithium battery pack body 3. The setting of the silicone heating film 8 can heat the lithium battery pack body 3.

[0024] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 The protective shell 1 is provided with a locking mechanism 9, which includes a limiting block 91. The limiting block 91 is fixedly connected to the inner side wall of the protective shell 1 and contacts the lithium battery pack body 3. The end face of the protective shell 1 is fixedly connected to a mounting bracket 92. The inner wall of the mounting bracket 92 is rotatably connected to a screw 93. The outer side of the screw 93 is threadedly connected to a moving block 94 and is slidably connected to the protective shell 1. The end face of the moving block 94 near the lithium battery pack body 3 is fixedly connected to a locking plate 95 and contacts the lithium battery pack body 3. The outer side of the screw 93 is fixedly sleeved with a limiting piece 96 and is rotatably connected to the mounting bracket 92. Through the driving action of the screw 93, the moving block 94 can drive the locking plate 95 to move, thereby locking and limiting the lithium battery pack body 3 and keeping the lithium battery pack body 3 in a stable state.

[0025] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 There are two limit blocks 91, which are symmetrically distributed on the protective shell 1. The limit blocks 91 can guide the lithium battery pack body 3. The end face of the screw 93 is fixedly connected to a handle 97, which is made of hard rubber. The handle 97 makes it easy to push the screw 93 to rotate, and the hard rubber material has good skin-friendliness and durability.

[0026] The specific implementation process of this utility model is as follows: When in use, by pushing the lithium battery pack body 3 into the protective shell 1, the lithium battery pack body 3 comes into contact with the bottom of the shell 2. During this process, when the lithium battery pack body 3 comes into contact with the connecting piece 7, under the pressure of the force, the telescopic rod 4 can be pushed to slide along the inner wall of the protective shell 1, so as to drive the end rod 5 to move, causing the elastic element 6 to deform, and finally the lithium battery pack body 3 comes into contact with the silicone heating film 8. Under the action of the silicone heating film 8, the lithium battery pack body 3 can be heated for use, so as to improve the subsequent outdoor cold resistance effect of the lithium battery pack body 3.

[0027] By pushing the handle 97 to rotate, the screw 93 is driven to rotate, and the limiting plate 96 rotates along the mounting bracket 92 to ensure the rotation stability of the screw 93. Under the threaded connection, the moving block 94 can be driven to slide stably along the inner wall of the protective shell 1 to ensure the movement stability of the moving block 94. This drives the locking plate 95 to contact the lithium battery pack body 3 and lock the lithium battery pack body 3 to ensure the stable placement of the lithium battery pack body 3.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art 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. An outdoor cold-resistant lithium battery pack comprising a protective shell (1), characterized in that: The lower end of the protection shell (1) is fixedly connected with a shell bottom (2), the upper end of the shell bottom (2) is in contact with a lithium battery pack body (3), the lithium battery pack body (3) is located in the interior of the protection shell (1), the inner wall of the protection shell (1) is slidably connected with an extension rod (4), the end face of the side, away from the lithium battery pack body (3), of the extension rod (4) is fixedly connected with an end rod (5), the end face of the side, close to the lithium battery pack body (3), of the end rod (5) is fixedly connected with a connecting sheet (7), the connecting sheet (7) is slidably connected with the shell bottom (2), the end face of the side, close to the lithium battery pack body (3), of the connecting sheet (7) is fixedly installed with a silica gel heating film (8), and the protection shell (1) is provided with a locking mechanism (9).

2. The outdoor cold-resistant lithium battery pack according to claim 1, characterized in that: A plurality of friction grooves are formed in the side face of the end rod (5), and the plurality of friction grooves are uniformly distributed on the end rod (5).

3. The outdoor cold-resistant lithium battery pack according to claim 1, characterized in that: The end face of the side, close to the protection shell (1), of the end rod (5) is bonded with an elastic piece (6), and the other end of the elastic piece (6) is bonded with the protection shell (1).

4. The outdoor cold-resistant lithium battery pack according to claim 1, characterized in that: The silica gel heating film (8) is slidably connected with the shell bottom (2), and the silica gel heating film (8) is in contact with the lithium battery pack body (3).

5. The outdoor cold-resistant lithium battery pack according to claim 1, characterized in that: The locking mechanism (9) comprises a limiting block (91), the inner side wall of the protection shell (1) is fixedly connected with the limiting block (91), the limiting block (91) is in contact with the lithium battery pack body (3), the end face of the protection shell (1) is fixedly connected with a mounting rack (92), the inner wall of the mounting rack (92) is rotatably connected with a screw rod (93), the outer side of the screw rod (93) is threadedly connected with a moving block (94), the moving block (94) is slidably connected with the protection shell (1), the end face of the side, close to the lithium battery pack body (3), of the moving block (94) is fixedly connected with a locking plate (95), the locking plate (95) is in contact with the lithium battery pack body (3), the outer side of the screw rod (93) is fixedly sleeved with a limiting sheet (96), and the limiting sheet (96) is rotatably connected with the mounting rack (92).

6. An outdoor cold-resistant lithium battery pack according to claim 5, characterized in that: The limiting block (91) is provided with two limiting blocks (91) which are symmetrically distributed on the protection shell (1).

7. The outdoor cold-resistant lithium battery pack according to claim 5, characterized in that: The end face of the screw rod (93) is fixedly connected with a handle (97), and the handle (97) is made of hard rubber.

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