CTP battery pack

Abstract

The utility model provides a CTP battery pack, including box body, battery core, push plate and push assembly, battery core array is provided in the box body, the box body is provided with the side opening, the push plate is provided in the side opening of the box body, the push assembly includes threaded push rod and support seat, the threaded push rod is fixed on the support seat, the support seat is fixed on the threaded push rod, and the support seat is fixed on the threaded push rod. The threaded push rod is in threaded connection with the supporting seat, the threaded push rod is connected with the push plate, and the threaded push rod rotates to drive the push plate to move towards the interior of the box body so as to press the battery cell, or the threaded push rod rotates to drive the push plate to be separated from the battery cell. According to the utility model, through the arrangement of the pushing assembly, the pushing assembly is utilized to continuously provide pressure for the battery cells, so that the pushing plate is kept in a state of pressing the battery cells, and further the pre-tightening force between the battery cells is kept.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery pack production equipment technical field, concretely relates to a CTP battery pack. BACKGROUND

[0002] CTP technology refers to the battery technology that through reducing the redundant structure, the battery core and the chassis are integrated designed, the battery core is directly installed in the battery pack, compared with the traditional battery, the CTP battery effectively reduces the number of parts, improves the space utilization of the battery pack and improves the specific energy of the battery system.

[0003] In the production process of the battery pack, the pre-tightening force needs to be applied to the internal battery core in advance to ensure that the battery core is tightly attached to each other, thereby improving the overall performance and safety of the battery pack. In the prior art, the battery core is tightly installed in the battery pack, but as the battery pack is used, the pre-tightening force between the battery core will gradually fail, thereby causing the overall performance of the battery pack to decrease and posing a safety risk. UTILITY MODEL CONTENTS

[0004] The utility model discloses a kind of CTP battery packs, and the pre-tightening force between the battery core is kept by setting push pressure subassembly, using push pressure subassembly persistently to provide pressure to battery core, so that push plate keeps the state of tightly attaching to battery core, and then.

[0005] The utility model discloses a kind of CTP battery packs, including box, battery core, push plate and push pressure subassembly, the battery core is arranged in the box, the box is provided with side edge opening, the push plate is set at the side edge opening of the box, the push pressure subassembly includes threaded push rod and support seat, the threaded push rod is connected with the support seat, the threaded push rod is connected with the push plate, the threaded push rod rotation drives the push plate to move to the box to tightly attach to the battery core, or the threaded push rod rotation drives the push plate to separate from the battery core.

[0006] The utility model more preferably technical scheme: the push pressure subassembly side is provided with locking piece, the locking piece includes support, limit pin and locking head, the locking head is set to the limit pin end, the limit pin is movably inserted on the support, the limit pin moves and makes the locking head abut on the threaded push rod, or the locking head is separated from the threaded push rod.

[0007] The utility model more preferably technical scheme: tooth structure is set on the locking head, limit gear is set on the threaded push rod, when the locking head abut on the threaded push rod, the tooth structure is inserted between two adjacent teeth of the limit gear.

[0008] The utility model discloses a better technical scheme: the support inside is provided with a limiting cavity, a limiting pin is movably inserted into the limiting cavity, a spring is sleeved outside the limiting pin, and the both ends of the spring abut against the limiting cavity.

[0009] The utility model discloses a better technical scheme: the limiting pin is rotatably arranged in the limiting cavity, a positioning rod is fixedly arranged on the limiting pin, a positioning groove for accommodating the positioning rod is arranged on the side wall of the limiting cavity, and the positioning groove extends from the end of the limiting cavity to the direction of the locking head.

[0010] The utility model discloses a better technical scheme: a sliding bearing is arranged on the limiting pin, and the limiting pin is arranged in the limiting cavity through the sliding bearing.

[0011] The utility model discloses a better technical scheme: the bottom of the box is provided with an extension plate extending outward from the opening of the side edge, and the support and the supporting seat are fixedly arranged on the extension plate.

[0012] The utility model discloses a better technical scheme: further include measurement subassembly, measurement subassembly includes slide rail and slide that sets up on slide rail, fixedly set up with the scale on slide rail, set up with vernier on slide, and the end of slide is fixedly connected with push plate.

[0013] The utility model discloses a better technical scheme: the slide rail is a linear guide rail, and the slide rail extends along the axis direction of the threaded push rod.

[0014] The utility model discloses a better technical scheme: two measurement subassemblies are symmetrically arranged on the two sides of the push assembly.

[0015] The utility model discloses a CTP battery pack has the following beneficial effects:

[0016] 1. The box side edge is provided with an opening, a push assembly and a push plate are arranged at the opening, the push assembly is used to press the battery cell tightly in the box, so that the battery cell is in a pressed state, and a pre-tightening force is applied to the battery cell.

[0017] 2. A locking member is arranged beside the push assembly, the locking head and the threaded push rod are abutted, the threaded push rod is positioned, the position of the threaded push rod is kept fixed, the position of the pressing plate is fixed, the pressing of the battery cell is kept, and the pre-tightening force of the battery cell is kept.

[0018] 3. The limiting pin is movably inserted into the support and is driven to extend out by the spring, so that the tooth structure abuts on the threaded push rod. During the operation of rotating the threaded push rod, the limiting pin can be manually moved, the tooth structure is separated from the threaded push rod, the overall structure of the locking member is simple, and the operation is convenient.

[0019] 4、The measuring assembly is arranged beside the pushing assembly, and the moving distance of the pressing plate is indicated by the cooperation of the scale and the cursor, so that the displacement of the pressing plate is accurately controlled, and then the pre-tightening force of the battery cell is accurately controlled;

[0020] 5、The sliding block is connected with the pressing plate, the sliding rail is consistent with the axis direction of the threaded push rod, the sliding rail provides a guide for the movement of the sliding block, so that the stability of the movement of the pressing plate is maintained, the inclination of the pressing plate is avoided, and the pressing plate uniformly presses the battery cell. BRIEF DESCRIPTION OF DRAWINGS

[0021] The accompanying drawings, which are incorporated into and form a part of the specification, illustrate an embodiment of the present application and, together with the description, serve to explain the principles of the present application. In these drawings, similar reference numerals are used to represent similar elements. The drawings in the following description are some embodiments of the present application, not all embodiments. For those skilled in the art, other drawings can be obtained from these drawings without creative labor.

[0022] Figure 1 It is a schematic view of the mounting structure of the embodiment of the present application.

[0023] Figure 2 It is a top view of the pushing assembly in the embodiment of the present application.

[0024] Figure 3 It is a sectional view of the locking member in the embodiment of the present application.

[0025] Figure 4 It is a schematic view of the measuring assembly structure in the embodiment of the present application.

[0026] In the figure: 10, pushing plate; 11, box body; 12, extension plate; 13, battery cell; 20, pushing assembly; 21, support seat; 22, threaded push rod; 23, operation handle; 24, limit gear; 25, connecting plate; 30, locking member; 31, support; 311, limit cavity; 312, ring table; 313, positioning groove; 32, limit pin; 33, locking head; 331, tooth structure; 34, spring; 35, sliding bearing; 36, positioning rod; 40, measuring assembly; 41, sliding rail; 42, sliding block; 43, scale; 44, cursor. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be described clearly and completely in combination with the drawings in the embodiments of the utility model below. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the ordinary skilled in the art without making creative labor belong to the protection scope of the utility model. It should be noted that the embodiments in the application and the features in the embodiments can be combined with each other at will without conflict.

[0028] Please refer to 1 to 4. A CTP battery pack, box 11, cell 13, push plate 10 and push assembly 20, cell 13 is arranged in the box 11, the box 11 side is provided with opening, push plate 10 is arranged in the opening of box 11, push assembly 20 includes support seat 21 and threaded push rod 22, threaded push rod 22 is threadedly connected with support seat 21, the end of threaded push rod 22 is connected with push plate 10, threaded push rod 22 rotates and drives push plate 10 to move into the box 11 and press cell 13 tightly in the box 11, or threaded push reversely rotates and makes push plate 10 separate from cell 13.

[0029] Cell 13 is arranged in the box 11, the box 11 circumferential side wall is provided with opening, the opening size is same with the size of the side wall of box 11, push plate 10 is arranged in the opening of box 11, and the size of push plate 10 is same with the size of the side wall of box 11, so that the area of push plate 10 can cover all cell 13, push plate 10 pushes all cell 13, and cell 13 is pressed tightly in the box 11.

[0030] Push assembly 20 is arranged outside the box 11, threaded push rod 22 penetrates support seat 21, and both ends thereof are located outside the support seat 21. Push plate 10 is a flat plate, one end thereof faces the inside of the battery pack, and the other end thereof is rotatably connected with the end of the threaded push rod 22. By rotating the threaded push rod 22, the push plate 10 is driven to move linearly.

[0031] Preferably, the end of the threaded push rod 22 is provided with a connecting plate 25, the connecting plate 25 is provided with a bearing, the threaded push rod 22 is rotatably connected with the connecting plate 25 through the bearing, and the push plate 10 is detachably connected with the connecting plate 25, so that different sizes of push plate 10 can be replaced according to the size of the battery pack, the size of the push plate 10 can transversely cover the size of the cell 13, the push plate 10 can simultaneously push all the cells 13 to move, and the cells 13 arranged in order are pressed into the battery pack.

[0032] The operation handle 23 is disc-shaped and fixedly arranged at the end of the threaded push rod 22, and has a radial dimension greater than that of the threaded push rod 22, so as to increase the force arm, facilitate the staff to drive the threaded push rod 22 to rotate through the operation of the operation handle 23, and then drive the push plate 10 to move linearly, and press the battery cell 13.

[0033] In order to ensure that the threaded push rod 22 remains stable after rotating, and then makes the push plate 10 remain at the moving position, keeps the state of continuously pressing the battery cell 13, and keeps the pre-tightening force in the battery cell 13 stable, the side of the push assembly 20 is further provided with a locking piece 30. The locking piece 30 includes a bracket 31, a limiting pin 32 and a locking head 33, and the bracket 31 is fixedly arranged at the side of the push assembly 20. The bracket 31 is internally provided with a limiting cavity 311, which is cylindrically arranged through the bracket 31, and the axis of the limiting cavity 311 is perpendicular to the axis of the threaded push rod 22. The limiting pin 32 is movably inserted into the limiting cavity 311, and the locking head 33 is arranged at the end of the limiting pin 32. When the locking head 33 abuts against the threaded push rod 22, the rotation of the threaded push rod 22 is limited, and the linear displacement of the push plate 10 is also limited synchronously. The push plate 10 keeps the state of pressing the battery cell 13, so that the battery is continuously pressed and pushed, so as to keep the installation pre-tightening force of the battery cell 13 and ensure the installation quality of the battery pack. Preferably, the bracket 31 is fixedly connected with the fixed seat.

[0034] The bottom of the box body 11 is provided with an extension plate 12, which extends outward from the opening of the box body 11. The locking piece 30 and the push assembly 20 are fixedly arranged on the extension plate 12. It should be noted that the structure of the box body 11 in the present application includes the top cover plate, but the cover plate is not shown in order to show the internal structure of the box body 11.

[0035] Specifically, the threaded push rod 22 is provided with a limiting gear 24, and the locking head 33 is provided with a tooth structure 331. When the limiting pin 32 moves to the gap between the two teeth of the limiting gear 24 and is inserted into the gap, the tooth structure 331 abuts against the limiting gear 24, the limiting gear 24 and the threaded push rod 22 are limited to rotate, the displacement of the push plate 10 is limited, and the positioning of the push plate 10 is realized. In the embodiment, the tooth structure 331 is a pawl, the limiting gear 24 is a common involute gear, and the pawl is clamped between the two teeth of the involute gear to realize limiting.

[0036] As another embodiment, the tooth structure 331 is a square body, and the limiting gear 24 is a rectangular gear. The square body is inserted between the two teeth of the rectangular gear to realize limiting.

[0037] Preferably, the limiting pin 32 is provided with a spring 34, and the two ends of the spring 34 abut against the limiting cavity 311. Under the elastic force of the spring 34, the limiting pin 32 keeps the locking head 33 abutting against the threaded push rod 22, so as to prevent the limiting pin 32 from moving and causing the limiting failure of the threaded push rod 22.

[0038] Specifically, the inner wall of the limiting cavity 311 is provided with a ring table 312, the locking head 33 is fixedly arranged at the end of the limiting pin 32, and the axial section of the locking head 33 is larger than that of the limiting pin 32. The two ends of the spring 34 abut against the end face of the ring table 312 and the locking head 33 respectively; under the action of the spring 34, the locking head 33 is pushed towards the direction of the threaded push rod 22 and abuts against the limiting gear 24.

[0039] Further, a positioning groove 313 is formed on the limiting cavity 311, the positioning groove 313 and the locking head 33 are located at the two ends of the limiting cavity 311 respectively, the positioning groove 313 extends from the end of the limiting cavity 311 to the direction of the locking head 33, and the limiting pin 32 is fixedly provided with a positioning rod 36 which can be inserted into the positioning groove 313, so as to limit the locking head 33 and prevent the locking head 33 from being separated from the limiting cavity 311 under the action of the spring 34. The length of the positioning groove 313 should meet the following condition: when the positioning rod 36 is located in the positioning groove 313 and abuts against the inner wall of the positioning groove 313, the locking head 33 is located outside the limiting cavity 311 and abuts against the space between the teeth of the limiting gear 24, so as to limit the threaded push rod 22.

[0040] Preferably, the two ends of the limiting pin 32 are provided with sliding bearings 35, and the limiting pin 32 is rotatably arranged in the limiting cavity 311 through the sliding bearings 35, so as to facilitate the rotation of the limiting pin 32 and limit the limiting pin 32. When it is necessary to rotate the threaded push rod 22 and move the push plate 10, the limiting pin 32 is moved reversely, so that the locking head 33 moves towards the direction of the limiting cavity 311, the locking head 33 is separated from the limiting gear 24, and after the positioning rod 36 is separated from the positioning groove 313 and located outside the limiting cavity 311, the limiting cavity 311 is rotated, the positioning rod 36 abuts against the end face of the limiting section, the spring 34 is compressed, the locking head 33 is limited, and the separation state of the locking head 33 and the limiting gear 24 is maintained, so that the worker can rotate the threaded push rod 22 and move the push plate 10.

[0041] Specific operation is as follows: when the battery cell 13 is installed, the threaded push rod 22 is rotated by operating the handle 23, so that the push plate 10 is moved and the battery cell 13 is pressed into the battery pack, and after being pressed to a certain depth, the limiting pin 32 is rotated, the positioning rod 36 corresponds to the positioning groove 313, the limiting pin 32 is loosened, the positioning rod 36 is inserted into the positioning groove 313, the locking head 33 is inserted into the limiting gear 24 under the action of the spring 34, the threaded push rod 22 is positioned, and the push plate 10 keeps pressing the battery cell 13, so as to stabilize the internal pre-tightening force of the battery pack. When the battery pack needs to be disassembled, the limiting pin 32 is reversely moved, so that the locking head 33 is separated from the limiting gear 24, and after the positioning rod 36 is located outside the limiting cavity 311, the limiting pin 32 is rotated, so that the positioning rod 36 abuts against the outer end face of the limiting cavity 311, the spring 34 is compressed, the locking head 33 is limited, and at this time, the threaded push rod 22 can be reversely rotated, so that the push plate 10 is separated from the battery cell 13 and the battery pack is disassembled.

[0042] As shown in FIG. 1 and FIG. 4, preferably, the pushing assembly 20 is provided with a measuring assembly 40, which comprises a slide rail 41 and a slide block 42. The slide rail 41 is fixedly arranged along the axis direction of the threaded push rod 22, and the slide block 42 is slidably arranged in the slide rail 41. The end of the slide block 42 is fixedly connected with the pushing plate 10, and the slide block 42 linearly slides in the slide rail 41 along with the pushing plate 10. Two measuring assemblies 40 are symmetrically arranged on both sides of the pushing assembly 20, so as to provide a guide for the movement of the pushing plate 10, to ensure the linear movement of the pushing plate 10, prevent the pushing plate 10 from tilting during the movement, and ensure the uniform contact between the pushing plate 10 and the battery cell 13.

[0043] The slide rail 41 is provided with a scale 43, and the slide block 42 is provided with a vernier 44. The vernier 44 cooperates with the scale 43 to control the movement distance of the pushing plate 10, and accurately control the pressure of the pushing plate 10 on the battery cell 13.

[0044] In the present application, the pushing plate 10 applies pressure to the battery cell 13 through the movement of the threaded push rod 22. The threaded push rod 22 is limited in movement by the stop of the locking member 30, and the pushing plate 10 is limited in position, so as to keep the battery cell 13 pressed. It should be noted that the structure of the locking member 30 and the pushing assembly 20 is enlarged in the drawing for the purpose of model representation. In actual use, the height of the locking member 30 and the push rod assembly is only half of the height of the battery pack, and the size of the locking member 30 and the pushing assembly 20 should not be considered as a factor affecting the novelty and practicality of the present application.

[0045] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacements to some technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A CTP battery pack characterized by, The utility model provides a battery pack, including box (11), electric core (13), push plate (10) and push assembly (20), electric core (13) is arranged in the box (11), the box (11) is provided with side edge opening, push plate (10) is arranged at the side edge opening of the box (11), push assembly (20) includes threaded push rod (22) and support seat (21), threaded push rod (22) is threadedly connected support seat (21), threaded push rod (22) is connected push plate (10), threaded push rod (22) rotation drive push plate (10) moves to the box (11) inwards to compact electric core (13), or threaded push rod (22) rotation drive push plate (10) is separated from electric core (13).

2. The CTP battery pack of claim 1, wherein, The push assembly (20) is provided with a locking member (30) on the side, the locking member (30) includes a bracket (31), a limiting pin (32) and a locking head (33), the locking head (33) is arranged at the end of the limiting pin (32), the limiting pin (32) is movably inserted into the bracket (31), and the limiting pin (32) is moved to abut against the threaded push rod (22) or separate from the threaded push rod (22).

3. The CTP battery pack of claim 2, wherein, The locking head (33) is provided with a tooth structure (331), the threaded push rod (22) is provided with a limiting gear (24), when the locking head (33) abuts against the threaded push rod (22), the tooth structure (331) is inserted between two adjacent teeth of the limiting gear (24).

4. The CTP battery pack of claim 2, wherein, The bracket (31) is internally provided with a limiting cavity (311), the limiting pin (32) is movably inserted into the limiting cavity (311), the limiting pin (32) is externally sleeved with a spring (34), and the spring (34) is abutted at both ends in the limiting cavity (311).

5. The CTP battery pack of claim 4, wherein, The limiting pin (32) is rotatably arranged in the limiting cavity (311), a positioning rod (36) is fixedly arranged on the limiting pin (32), a positioning groove (313) for accommodating the positioning rod (36) is arranged on the side wall of the limiting cavity (311), and the positioning groove (313) extends from the end of the limiting cavity (311) to the locking head (33).

6. The CTP battery pack of claim 5, wherein, The limiting pin (32) is provided with a sliding bearing (35), and the limiting pin (32) is arranged in the limiting cavity (311) through the sliding bearing (35).

7. The CTP battery pack of claim 2, wherein, The box (11) is provided with an extension plate (12) extending outward from the side opening, and the bracket (31) and the support seat (21) are fixedly arranged on the extension plate (12).

8. The CTP battery pack of claim 1, wherein, Further comprising a measuring assembly (40), the measuring assembly (40) comprises a slide rail (41) and a sliding block (42) slidingly arranged on the slide rail (41), a scale (43) is fixedly arranged on the slide rail (41), a vernier (44) is arranged on the sliding block (42), and the end of the sliding block (42) is fixedly connected with the push plate (10).

9. The CTP battery pack of claim 8, wherein, The slide rail (41) is a linear guide rail, and extends along the axis direction of the threaded push rod (22).

10. The CTP battery pack of claim 8, wherein, The two measurement assemblies (40) are symmetrically arranged on two sides of the push assembly (20).

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