CTP battery pack frame structure

Abstract

The utility model discloses a CTP (computer to plate) battery pack frame structure, which belongs to the technical field of battery structures and comprises a beam component with a first convex rib structure and an end plate component with a second convex rib structure. Through the first convex rib structure on the beam component and the second convex rib structure on the end plate component, the beam component and the end plate component can be completely embedded after the grouped battery cells of the CTP battery pack enter the box, so that a new limiting mode is added between the box body of the CTP battery pack and the grouped battery cells, and the risk of bonding failure caused by single bonding can be avoided.

Description

TECHNICAL FIELD

[0001] The utility model belongs to battery structure technical field, concretely relates to a CTP battery package frame structure. BACKGROUND

[0002] CTP (Cell To Pack) is a module-free battery package, and after the battery package is formed by the battery cells and is put into a box, the battery cells are only connected to the box through the bottom of the battery cells by gluing, and no other way is used to fix or limit the battery cells, so that the battery cells are prone to delamination when the battery package is subjected to vibration, impact and other working conditions. UTILITY MODEL CONTENTS

[0003] The utility model discloses a CTP battery package frame structure, which solves the problem of the existing battery package that the battery cells are prone to delamination when subjected to vibration, impact and other working conditions.

[0004] To achieve the above object, the utility model provides the following technical scheme: a CTP battery package frame structure, comprising:

[0005] The beam member has a first end face and a second end face in the first direction, the first end face has a first part and a second part in the third direction, the second part of the first end face is formed with a first rib structure extending in the first direction, and the first rib structure and the first part jointly define a limiting interval;

[0006] The end plate member has a first assembly face and a second assembly face in the first direction, the first assembly face has a first face and a second face in the third direction, and the first face of the first assembly face is formed with a second rib structure that can be embedded in the limiting interval.

[0007] The first rib structure on the beam member and the second rib structure of the end plate member enable the beam member and the end plate member to be completely embedded after the battery cells are put into the box of the CTP battery package, thereby increasing a new limiting mode between the box of the CTP battery package and the battery cells, and avoiding the risk of adhesion failure caused by single adhesion.

[0008] Further, in the first direction, the lengths of the first rib structure and the second rib structure are equal.

[0009] The lengths of the first rib structure and the second rib structure in the first direction can limit the better embedding of the beam member and the end plate member.

[0010] Further, the lower end face of the first rib structure and the upper end face of the second rib structure are both planar structures.

[0011] Based on the planar design of the lower end face of the first protruding rib structure and the upper end face of the second protruding rib structure, the battery cell group with the end plate member is fixed in the height direction of the beam member first protruding rib structure to achieve the limiting of the battery cell.

[0012] Further, at least one of the upper end face of the first protruding rib structure and the lower end face of the second protruding rib structure is a bevel structure.

[0013] Through the design of the bevel structure, the CTP battery pack battery cell group can be guided when being put into the box, so that it is more convenient to put into the box

[0014] Further, the inclination angle of the bevel structure is 40°-50°.

[0015] Further, in the third direction, the first part of the first end face and the first face part of the first assembly surface are equal in length.

[0016] Further, the second end face has a third part and a fourth part in the third direction, and the third part of the second end face is formed with a third protruding rib structure extending in the first direction.

[0017] Further, the beam member is provided with a cavity.

[0018] Further, the second assembly surface is configured as a mounting surface of the battery cell.

[0019] Further, the battery cell is fixed on the second assembly surface by bonding. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a schematic view of the separated state of the beam member and the end plate member;

[0021] Figure 2 It is a side view of the frame structure;

[0022] Figure 3 It is a schematic view of the combined state of the beam member and the end plate member.

[0023] In the figure:

[0024] 100, beam member; 101, first end face; 101a, first part; 101b, second part; 102, second end face; 102a, third part; 102b, fourth part; 103, first protruding rib structure; 104, third protruding rib structure;

[0025] 200, end plate member; 201, first assembly surface; 201a, first face part; 201b, second face part; 202, second assembly surface; 203, second protruding rib structure. DETAILED DESCRIPTION

[0026] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0027] A CTP battery pack frame structure, referring to Figure 1 , comprises a beam member 100 and at least one end plate member 200. In the subsequent description, the length, thickness and height of the end plate member 200 are used as the direction reference, and the thickness direction of the end plate member 200 is recorded as the first direction, the length direction is recorded as the second direction, and the height direction is recorded as the third direction,

[0028] Referring to Figure 1 , the beam member 100 has a first end face 101 and a second end face 102 in the first direction. The first end face 101 includes a first portion 101a and a second portion 101b in the third direction. Correspondingly, the second portion 101b of the first end face 101 extends outwardly along the third direction to form a first rib structure 103, and a limiting interval is defined by the first portion 101a of the first end face 101 and the first rib structure 103. In some embodiments, referring to Figure 2 , the second end face 102 has a third portion 102a and a fourth portion 102b in the third direction. The third portion 102a of the second end face 102 extends to form a third rib structure 104 along the third direction. In some embodiments, the third rib structure 104 and the first rib structure 103 have the same size specification, i.e. the first rib structure 103 and the third rib structure 104 are symmetrically arranged. At this time, the beam member 100 is integrally formed as an axially symmetric component. The first rib structure 103 and the third rib structure 104 can be used in cooperation with the end plate member 200, i.e. the staff can select the first rib structure 103 and the third rib structure 104 for use based on actual needs. In other embodiments, the first rib structure 103 and the third rib structure 104 can be designed to have different specifications to be used in cooperation with end plate members 200 of different specifications.

[0029] In some embodiments, the beam member 100 is a solid structure, and in other embodiments, the beam member 100 has a cavity inside.

[0030] Referring to Figure 1The end plate member 200 has a first assembly surface 201 and a second assembly surface 202 in the first direction, wherein the second assembly surface 202 of the end plate member 200 is configured as a mounting surface of the battery cell, i.e. the battery cell is fixed on the second assembly surface 202 of the end plate member 200 by bonding or the like, and the first assembly surface 201 of the end plate member 200 includes a first surface portion 201a and a second surface portion 201b in the third direction, and in some embodiments, in the third direction, the first surface portion 201a of the first assembly surface 201 has the same length as the first portion 101a of the first end surface 101, and the first surface portion 201a extends in the first direction and is formed with a second protruding rib structure 203 that can be embedded in a limiting interval, i.e. the size of the second protruding rib structure 203 in the third direction is adapted to the size of the limiting interval, and the size of the subsequent first protruding rib structure 103 and the second protruding rib structure 203 in the first direction is limited, so that the second protruding rib structure 203 can be completely embedded in the limiting interval, and when the beam member 100 and the end plate member 200 are assembled, the first protruding rib structure 103 and the second protruding rib structure 203 can form a limiting structure, and the beam member 100 and the end plate member 200 can be completely embedded after the group battery cells of the CTP battery pack are boxed, thereby increasing a new limiting mode between the CTP battery pack box and the group battery cells, which can avoid the risk of bonding failure caused by single bonding.

[0031] In some embodiments, the number of the end plate member 200 is determined based on the number of groups of battery cells, and when the end plate member 200 is provided with a plurality of end plate members, in the second direction, the length of the beam member 100 is adapted to the total length of the plurality of end plate members 200, so as to realize the assembly of the plurality of end plate members 200 and the beam member 100, so that the frame structure in the present application can be adapted to the battery with multiple groups of battery cells, thereby increasing the application range of the frame structure in the present application.

[0032] In some embodiments, the lengths of the first and second protruding rib structures 103 and 203 in the first direction are equal, and based on this design, when the grouped battery cells of the CTP battery pack are put into the box, the first end surface 101 of the beam member 100 and the second protruding rib structure 203 of the end plate member 200 in the first direction can be embedded and compressed under the expansion force of the grouped battery cells, and in some embodiments, the lower end surface (in the following description, up and down are based on the third direction) of the first protruding rib structure 103 and the upper end surface of the second protruding rib structure 203 are both planar structures, which can make the contact position of the first and second protruding rib structures 103 and 203 in the third direction better fit, thereby ensuring the limiting effect, and at this time, after the beam member 100 and the end plate member 200 are embedded, the battery cells installed on the second assembly surface 202 of the end plate member 200 are fixed by the first protruding rib structure 103 of the beam member 100, that is, a new limiting mode is added between the CTP battery pack box and the grouped battery cells, which can avoid the risk of adhesive failure caused by single adhesive connection.

[0033] In some embodiments, at least one of the upper end surface of the first protruding rib structure 103 and the lower end surface of the second protruding rib structure 203 is a beveled surface structure, and for example, the upper end surface of the first protruding rib structure 103 and the lower end surface of the second protruding rib structure 203 are both beveled surface structures, and the inclination angle of the upper end surface of the first protruding rib structure 103 and the lower end surface of the second protruding rib structure 203 is between 40° and 50° (i.e., the included angle between the upper end surface of the first protruding rib structure 103 and the lower end surface of the second protruding rib structure 203 and the horizontal plane), and based on the inclination design of the upper end surface of the first protruding rib structure 103 and / or the lower end surface of the second protruding rib structure 203, it can play a guiding role during the process of the grouped battery cells of the CTP battery pack entering the box, thereby facilitating the grouping of the CTP battery pack, and increasing the convenience of the assembly of the CTP battery pack.

[0034] In the description of the present application, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0035] Although the embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A CTP battery pack frame structure, characterized by, The application relates to a beam component (100) and an end plate component (200) for a battery cell. The beam component (100) has a first end face (101) and a second end face (102) in a first direction, the first end face (101) has a first part (101a) and a second part (101b) in a third direction, the second part (101b) of the first end face (101) is formed with a first convex rib structure (103) extending in the first direction, and the second part (101b) of the first end face (101) and the first part (101a) jointly define a limiting interval. The end plate component (200) has a first assembly face (201) and a second assembly face (202) in the first direction, the first assembly face (201) has a first face (201a) and a second face (201b) in the third direction, and the first face (201a) of the first assembly face (201) is formed with a second convex rib structure (203) which can be embedded in the limiting interval.

2. The CTP battery pack frame structure of claim 1, wherein: In the first direction, the lengths of the first convex rib structure (103) and the second convex rib structure (203) are equal.

3. The CTP battery pack frame structure according to claim 1 or 2, characterized in that: The lower end face of the first convex rib structure (103) and the upper end face of the second convex rib structure (203) are both planar structures.

4. The CTP battery pack frame structure of claim 1, wherein: At least one of the upper end face of the first convex rib structure (103) and the lower end face of the second convex rib structure (203) is a bevel structure.

5. The CTP battery pack frame structure of claim 4, wherein: The inclination angle of the bevel structure is 40-50 degrees.

6. The CTP battery pack frame structure of claim 1, wherein: In the third direction, the lengths of the first part (101a) of the first end face (101) and the first face (201a) of the first assembly face (201) are equal.

7. The CTP battery pack frame structure of claim 1, wherein: The second end face (102) has a third part (102a) and a fourth part (102b) in the third direction, and the fourth part (102b) of the second end face (102) is formed with a third convex rib structure (104) extending in the first direction.

8. The CTP battery pack frame structure of claim 1, wherein: The beam component (100) is provided with a cavity.

9. The CTP battery pack frame structure of claim 1, wherein: The second assembly face (202) is used as a mounting face of a battery cell.

10. The CTP battery pack frame structure of claim 9, wherein: The battery cell is fixed on the second assembly face by means of adhesion.

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