Battery cell assembly light blocking structure and battery cell module

Abstract

The invention discloses a battery cell assembly light blocking structure and a battery cell module, and relates to the technical field of battery cell assembly welding, the battery cell assembly light blocking structure comprises a shell, two end portion light shielding plates and a middle plate, the shell is provided with a containing cavity for installing a battery cell assembly, the two end portion light shielding plates are arranged in the containing cavity in a spaced mode in the longitudinal direction and both extend in the transverse direction, and the middle plate is arranged between the two end portion light shielding plates. A guide opening penetrating downwards is formed in the longitudinal end face of each end shading plate, the two end shading plates are used for being arranged at the two ends of the battery cell assembly in the longitudinal direction respectively, the middle plate comprises a middle baffle and two first light blocking parts, the middle baffle extends in the longitudinal direction and is inserted into the guide opening, and the two first light blocking parts are arranged in the middle baffle. The two first light blocking parts are arranged on the transverse end face of the middle baffle in the longitudinal direction in a spaced mode and protrude out of the side end of the middle baffle in the longitudinal direction so as to be welded to the shell. Therefore, the light leakage amount can be reduced, the risk of poor welding is reduced, and the welding efficiency and the welding quality are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of battery core assembly welding, and in particular to a battery core assembly light shielding structure and a battery core module. Background Art

[0002] The double-row large module design in the power battery pack has a middle plate and end plate welding structure. Because the matching gap always exists, there is a risk of light leakage and burning through the cell insulation film during the laser welding process between the end plate and the middle plate, resulting in the risk of cell insulation withstand voltage and even thermal runaway. The common module middle plate and end plate welding structure is to stick a light shielding strip or a rubber sleeve on the middle plate, and at the same time, use welding tools to press the welding position of the middle plate and the end plate to make the welding gap as small as possible, reduce the amount of light leakage, and ensure the quality of the weld.

[0003] However, the existing solutions for preventing laser welding from penetrating the insulating film not only increase the cost due to the additional parts, but also have high requirements on the flatness of the middle plate. If the flatness of the middle plate is poor, there is still a risk of light leakage. Summary of the invention

[0004] The main purpose of the present invention is to propose a light-blocking structure for a battery cell assembly and a battery cell module, aiming to solve the problem that the existing solution for preventing laser welding from penetrating the insulating film not only increases costs due to the addition of additional parts, but also has high requirements on the flatness of the middle plate. If the flatness of the middle plate is poor, there is still a risk of light leakage.

[0005] To achieve the above-mentioned purpose, the light shielding structure of the battery cell assembly proposed in the present invention comprises:

[0006] The housing has a receiving cavity for installing the power core assembly;

[0007] Two end shading plates are arranged in the accommodating cavity at intervals along the longitudinal direction, each of the end shading plates extends in the transverse direction, and each of the end shading plates has a guide opening extending downwardly through the end surface along the longitudinal direction, and the two end shading plates are used to be arranged at both ends of the battery cell assembly in the longitudinal direction;

[0008] The middle plate includes a middle baffle and two first light-blocking parts. The middle baffle is extended in the longitudinal direction, inserted into the guide port, and both ends in the longitudinal direction protrude from the guide port. The two first light-blocking parts are longitudinally spaced apart on one end face of the middle baffle in the transverse direction, and protrude from the side ends of the middle baffle in the longitudinal direction. The first light-blocking parts are welded to the shell.

[0009] In one embodiment, the middle baffle has two adjacent side surfaces, and one of the side surfaces is located at one end of the middle baffle along the longitudinal direction, and a notch penetrating the two side surfaces is provided on the middle baffle.

[0010] In one embodiment, each of the middle baffles is provided with guide portions at both ends in the transverse direction, and each of the guide portions abuts against a wall surface of the guide opening.

[0011] In one embodiment, the end shading plate is made of an elastic material.

[0012] In one embodiment, the lateral thickness of each of the middle baffles is not less than the distance between the two lateral walls of the corresponding guide opening, so that the end light shielding plate is deformed by force to form a second light shielding portion exposed on the side of the corresponding guide opening facing away from the other end light shielding plate.

[0013] In one embodiment, the housing includes two end plates, which are disposed on one side of the corresponding end shading plate facing away from the other end shading plate, and each end plate is provided with a limiting hole in the longitudinal direction;

[0014] Each of the first light blocking portions is inserted into the corresponding limiting hole.

[0015] In one embodiment, both side ends of the first light shielding portion in the lateral direction are provided with structural adhesive extending in the up-down direction, and the structural adhesive is located between the end plate and the end light shielding plate.

[0016] In one embodiment, each of the end plates is provided with a plurality of stoppers at intervals in the vertical direction;

[0017] A plurality of matching parts are provided at intervals in the up-down direction at one end of the middle plate along the longitudinal direction, and the plurality of matching parts correspond to the plurality of limiting parts, and each matching part abuts against the corresponding limiting part to limit the relative angle between the end plate and the middle plate.

[0018] In one embodiment, one end of the first light shielding portion along the longitudinal direction is recessed with a matching groove extending through the first light shielding portion along the transverse direction;

[0019] One of the limiting parts is disposed in the limiting hole, and the limiting part can extend into the matching groove to abut against the groove bottom of the matching groove;

[0020] The plurality of mating portions include the mating groove.

[0021] The present invention also provides a battery cell module, comprising the above-mentioned battery cell assembly light shielding structure.

[0022] In the technical solution of the present invention, when the middle baffle plate and the shell need to be welded together, since two first light shielding parts spaced in the longitudinal direction are provided on one end face of the middle baffle plate in the transverse direction and protrude from the side ends of the middle baffle plate in the longitudinal direction, the first light shielding part and the middle baffle plate are staggered in the transverse direction. Therefore, during the welding process of the first light shielding part and the shell, the welding laser will be blocked by the staggered first light shielding part and the middle baffle plate and cannot penetrate to the battery cell assembly. In addition, since the middle baffle plate is inserted into the guide port, the two end faces of the middle baffle plate in the transverse direction first contact and cooperate with the two wall surfaces of the notch of the end light shielding plate, which can further play a light shielding role. With such a configuration, the amount of light leakage can be reduced through the structural design of multiple laser blocking, the risk of poor welding can be reduced, and the welding efficiency and welding quality can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0024] Figure 1 A structural schematic diagram of an embodiment of a light shielding structure of a battery cell assembly provided by the present invention;

[0025] Figure 2 for Figure 1 A schematic diagram of the structure of the end shading plate in FIG.

[0026] Figure 3 for Figure 1 Schematic diagram of the structure of the middle plate in FIG.

[0027] Figure 4 for Figure 1 A schematic diagram of the structure after the end shading plate and the middle plate are assembled;

[0028] Figure 5 for Figure 4 An enlarged schematic diagram of the assembly of the end shading plate and the middle plate;

[0029] Figure 6 for Figure 1 Schematic diagram of the structure of the end plate.

[0030] Description of Figure Numbers:

[0031] 100. Cell assembly light shielding structure; 1. Shell; 11. End plate; 12. Limiting portion; 2. End light shielding plate; 21. Guide port; 22. Second light shielding portion; 3. Middle plate; 31. Middle baffle; 32. First light shielding portion; 33. Structural adhesive; 34. Fitting portion.

[0032] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0035] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0036] The present invention proposes a light shielding structure for a cell assembly, which aims to solve the problem that the existing solution for preventing laser welding from penetrating an insulating film not only increases the cost due to the additional parts, but also has high requirements for the flatness of the middle plate. If the flatness of the middle plate is poor, there is still a risk of light leakage.

[0037] See also Figures 1 to 4In one embodiment of the present invention, the cell assembly light shielding structure 100 includes a shell 1, two end light shielding plates 2 and a middle plate 3, the shell 1 has a accommodating cavity for installing the cell assembly, the two end light shielding plates 2 are arranged in the accommodating cavity at intervals along the longitudinal direction, each of the end light shielding plates 2 extends in the transverse direction, and each of the end light shielding plates 2 is provided with a guide port 21 that is set to penetrate downward on the end surface along the longitudinal direction, and the two end light shielding plates 2 are used to be arranged at both ends of the cell assembly in the longitudinal direction, the middle plate 3 includes a middle baffle 31 and two first light shielding parts 32, the middle baffle 31 extends in the longitudinal direction, the middle baffle 31 is inserted in the guide port 21, and both ends in the longitudinal direction protrude from the guide port 21, the two first light shielding parts 32 are arranged on one end surface of the middle baffle 31 in the transverse direction at intervals along the longitudinal direction, and protrude from the side end of the middle baffle 31 in the longitudinal direction, and the first light shielding part 32 is welded to the shell 1.

[0038] In the technical solution of the present invention, when the middle baffle plate 31 and the shell 1 need to be welded together, since two first light shielding parts 32 spaced in the longitudinal direction are provided on one end face of the middle baffle plate 31 in the transverse direction and protrude from the side ends of the middle baffle plate 31 in the longitudinal direction, the first light shielding parts 32 and the middle baffle plate 31 are staggered in the transverse direction, so during the welding process of the first light shielding parts 32 and the shell 1, the welding laser will be blocked by the staggered first light shielding parts 32 and the middle baffle plate 31 and cannot penetrate to the battery cell assembly, and since the middle baffle plate 31 is inserted into the guide opening 21, the two end faces of the middle baffle plate 31 in the transverse direction first contact and cooperate with the two wall surfaces of the guide opening 21 of the end light shielding plate 2, which can further play a light shielding role. With such a configuration, the amount of light leakage can be reduced through the structural design of multiple laser blocking, the risk of poor welding can be reduced, and the welding efficiency and welding quality can be improved.

[0039] It is understandable that the present invention does not limit the location of the first light shielding portion 32 . For example, in one embodiment of the present invention, two first light shielding portions 32 are longitudinally spaced apart and disposed on the same side of the middle baffle plate 31 in the transverse direction.

[0040] In another embodiment of the present invention, the two first light shielding portions 32 are respectively disposed on two side surfaces of the middle baffle plate 31 in the longitudinal direction, and the two first light shielding portions 32 are spaced apart in the longitudinal direction.

[0041] Similarly, the present invention does not limit the specific number of the first light blocking portions 32. In another embodiment of the present invention, the first light blocking portions 32 can also be set to 4, and the two first light blocking portions 32 corresponding to each other in the longitudinal direction form a first light blocking group. The two first light blocking groups are spaced apart in the longitudinal direction, and the two first light blocking portions 32 in each first light blocking group are disposed on the two side surfaces of the middle baffle plate 31 in the longitudinal direction. In this way, the requirement for the staggered setting of the first light blocking portions 32 and the middle baffle plate 31 can also be ensured.

[0042] In other embodiments of the present invention, the number and position of the first light blocking portions 32 may also be set to other forms. In actual settings, they can be selected according to needs, and the present invention does not impose any limitation on this.

[0043] It should be noted that, in any embodiment, the first light blocking portion 32 is arranged on the two ends of the middle baffle 31 protruding longitudinally from the guide opening 21, so as to ensure the contact between the first light blocking portion 32 and the shell 1, and to ensure that the first light blocking portion 32 can be welded to the shell 1 as a whole.

[0044] It should also be noted that, in order to ensure the abutting effect between the guide opening 21 and the middle baffle 31, and thus ensure the shading effect at the abutting point between the end shading plate 2 and the middle baffle 31, in the present invention, the material of the end shading plate 2 is set to be an elastic material. With such a setting, when the middle baffle 31 is inserted into the guide opening 21, the middle baffle 31 can press the two transverse walls of the guide opening 21, so that the two transverse walls of the guide opening 21 can press against the two end surfaces of the middle baffle 31 in the transverse direction, so as to ensure the close contact between the end shading plate 2 and the middle baffle 31, and thus ensure the shading effect at the abutting point between the end shading plate 2 and the middle baffle 31.

[0045] Of course, the present invention does not limit the specific material of the end shading plate 2. For example, in one embodiment of the present invention, the material of the end shading plate 2 can be set to rubber; in another embodiment of the present invention, the material of the end shading plate 2 can also be set to plastic.

[0046] In other embodiments of the present invention, the material of the end shading plate 2 can also be set to other elastic materials, which can be selected according to needs during actual setting.

[0047] It should be noted that, in order to ensure that the middle baffle 31 can squeeze the two lateral walls of the guide opening 21, in one embodiment of the present invention, the lateral thickness of each middle baffle 31 is not less than the spacing between the two lateral walls of the corresponding guide opening 21, so that the end shading plate 2 is deformed by force, thereby ensuring the interference fit between the middle baffle 31 and the end shading plate 2.

[0048] To further improve the shading effect of the junction between the end shading plate 2 and the middle baffle plate 31, please refer to Figure 5 In another embodiment of the present invention, the end light shielding plate 2 is deformed by force to form a second light shielding portion 22 exposed on the side of the corresponding guide port 21 facing away from the other end light shielding plate 2. In this way, the second light shielding portion 22 protrudes from the corresponding end light shielding plate 2 in the direction facing away from the other end light shielding plate 2, forming a flip-over structure, so as to further shield the welding laser, thereby reducing the amount of light leakage again, reducing the risk of poor welding, and thus improving welding efficiency and welding quality.

[0049] It is understandable that, in another embodiment of the present invention, the second light blocking portion 22 may also be exposed on the corresponding guide opening 21 and disposed on one side facing the other shading plate. Specifically, it may be selected according to demand, and the present invention does not impose any limitation on this.

[0050] Similarly, the present invention does not limit the specific structural form of the second light shielding portion 22. In other embodiments of the present invention, the second light shielding portion 22 and the end light shielding plate 2 can also be set as a split type, so that the second light shielding portion 22 set as an elastic material is provided on both side walls of the guide opening 21 in the horizontal direction, and a portion of the light shielding portion is exposed on the side of the corresponding guide opening 21 facing away from the other end light shielding plate 2; or, the second light shielding portion 22 set as an elastic material is provided on both side walls of the guide opening 21 in the horizontal direction, and a portion of the light shielding portion is exposed on the side of the corresponding guide opening 21 facing the other end light shielding plate 2. The specific setting form can be selected according to the needs.

[0051] In addition, when the second light blocking portion 22 and the end light blocking plate 2 are arranged in a split type, the specific materials of the second light blocking portion 22 and the end light blocking plate 2 can be set to different materials. For example, in one embodiment of the present invention, the material of the end light blocking plate 2 is set to rubber material, and the material of the second light blocking portion 22 is set to plastic material; and in another embodiment of the present invention, the material of the end light blocking plate 2 can also be set to plastic material, and the material of the second light blocking portion 22 can be set to rubber material. In this way, the end light blocking plate 2 can provide sufficient supporting force, and the second light blocking portion 22 can have sufficient deformation ability.

[0052] Specifically, in the present embodiment, the end light shielding plate 2 and the second light shielding portion 22 are integrally formed, and the end light shielding plate 2 and the second light shielding portion 22 are both made of plastic.

[0053] Furthermore, after the middle baffle 31 is inserted into the guide opening 21, it is also necessary to ensure the matching of the middle baffle 31 and the guide opening 21. For example, in one embodiment of the present invention, the middle baffle 31 has two adjacent side surfaces, and one of the side surfaces is located at one end of the middle baffle 31 in the longitudinal direction, and a notch penetrating the two side surfaces is provided on the middle baffle 31. The notch and the guide opening 21 match each other, and one wall surface of the notch abuts against a section of the corresponding end shading plate 2 facing the other end shading plate 2. In this way, the matching of the relative positions of the middle baffle 31 and the guide opening 21 can be ensured, thereby further improving the matching accuracy of the middle baffle 31 and the end shading plate 2.

[0054] In another embodiment of the present invention, the middle baffle plate 31 may be provided with a mating opening extending upward along a section of its transverse surface. In this way, the guide opening 21 can also cooperate with the mating opening to ensure the coordination of the relative positions of the middle baffle plate 31 and the guide opening 21, thereby further improving the coordination accuracy of the middle baffle plate 31 and the end shading plate 2.

[0055] It can be understood that, in the present invention, two notches are provided, and the two notches are respectively provided corresponding to the two side surfaces of the middle baffle 31 along the longitudinal direction.

[0056] It should also be noted that the present invention does not limit the specific position of the notch. In one embodiment of the present invention, the notch may penetrate the upper end surface and one end surface along the longitudinal direction of the middle baffle 31; and in another embodiment of the present invention, the notch may also penetrate the lower section and one end surface along the longitudinal direction of the middle baffle 31.

[0057] In addition, it is also necessary to ensure the matching angle between the middle baffle 31 and the end shading plate 2. In one embodiment of the present invention, each of the middle baffles 31 is provided with a guide portion at both ends in the transverse direction, and each of the guide portions abuts against a wall surface of the guide opening 21. The guide portion can abut against the guide opening 21 to determine the direction of the guide opening 21, thereby ensuring the matching angle between the middle baffle 31 and the end shading plate 2.

[0058] Of course, the present invention does not limit the specific setting form of the guide portion. For example, in one embodiment of the present invention, the guide portion can be set as a guide groove extending in the up and down directions. In this way, the two side walls of the guide opening 21 can extend into the guide groove and abut against the bottom wall of the guide groove, thereby limiting the relative angle between the guide groove and the guide opening 21, and further ensuring the matching angle between the middle baffle 31 and the end shading plate 2.

[0059] In another embodiment of the present invention, the guide portion can also be configured as a guide boss or other structural forms capable of limiting the relative angle between the guide portion and the guide opening 21. In actual configuration, it can be selected according to the needs, and the present invention does not impose any limitation on this.

[0060] It should also be noted that when the middle baffle 31 and the shell 1 are welded together, the relative position of the middle baffle 31 and the shell 1 needs to be determined. Figure 6 In the present invention, the housing 1 includes two end plates 11, which are disposed on the side of the corresponding end light shielding plate 2 facing away from the other end light shielding plate 2, and each end plate 11 is provided with a limiting hole in the longitudinal direction, and each first light shielding portion 32 is inserted into the corresponding limiting hole. In this way, the limiting hole can limit the relative position of the corresponding first light shielding portion 32 and the end plate 11, and further limit the relative position of the middle baffle 31 and the two end plates 11, thereby ensuring the welding quality.

[0061] It should also be noted that, in order to further ensure the relative position between the middle baffle plate 31 and the end plate 11, in the present invention, each end plate 11 is provided with a plurality of limit portions 12 at intervals in the vertical direction, and a plurality of matching portions 34 are provided at intervals in the vertical direction at one end of the middle plate 3, and the plurality of matching portions 34 correspond to the plurality of limit portions 12, and each matching portion 34 abuts against the corresponding limit portion 12 to limit the relative angle between the end plate 11 and the middle plate 3.

[0062] It can be understood that the present invention does not limit the specific structural form of the limiting portion 12 and the matching portion 34. In one embodiment of the present invention, the limiting portion 12 includes an end surface of the end plate 11 facing the corresponding end shading plate 2, and the matching portion 34 includes the notch. In this way, the notch can cooperate with a section of the end plate 11 facing the corresponding end shading plate 2, thereby limiting the relative angle between the end plate 11 and the middle baffle 31.

[0063] In another embodiment of the present invention, the matching portion 34 includes a matching groove that is recessed at one end of the first light shielding portion 32 in the longitudinal direction and is arranged to penetrate in the transverse direction, wherein one of the limiting portions 12 is arranged in the limiting hole, and the limiting portion 12 can extend into the matching groove to abut against the bottom of the matching groove. In this way, after the first light shielding portion 32 is inserted into the limiting hole, the limiting portion 12 arranged in the limiting hole can extend into the matching groove, and the matching grooves cooperate with each other and abut against the bottom of the matching groove, thereby limiting the relative angle between the end plate 11 and the middle baffle plate 31.

[0064] In order to further ensure the light shielding performance of the cell assembly as a light shielding structure, in one embodiment of the present invention, both ends of the first light shielding portion 32 in the lateral direction are provided with structural adhesive 33 extending in the up-down direction, and the structural adhesive 33 is located between the end plate 11 and the end light shielding plate 2. The arrangement of the structural adhesive 33 can further block the welding laser, thereby reducing the amount of light leakage, reducing the risk of poor welding, and thus improving welding efficiency and welding quality.

[0065] It should be noted that, in order to ensure the integrity of the structural adhesive 33 during the process of inserting the middle baffle 31 into the guide opening 21 , in this embodiment, the middle baffle 31 is inserted into the guide opening 21 from the lower end of the guide opening 21 which is open.

[0066] The present invention also proposes a battery cell module, which includes a battery cell assembly light-blocking structure 100. The specific structure of the battery cell assembly light-blocking structure 100 refers to the above-mentioned embodiment. Since the battery cell module adopts all the technical solutions of all the above-mentioned embodiments, it has at least all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be described one by one here.

[0067] The above description is only an exemplary embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the technical concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A light shielding structure for a battery cell assembly, characterized in that: include: The housing has a receiving cavity for installing the power core assembly; Two end shading plates are arranged in the accommodating cavity at intervals along the longitudinal direction, each of the end shading plates extends in the transverse direction, and each of the end shading plates has a guide opening extending downwardly through the end surface along the longitudinal direction, and the two end shading plates are used to be arranged at both ends of the battery cell assembly in the longitudinal direction; The middle plate includes a middle baffle and two first light-blocking parts. The middle baffle is extended in the longitudinal direction, inserted into the guide port, and both ends in the longitudinal direction protrude from the guide port. The two first light-blocking parts are longitudinally spaced apart on one end face of the middle baffle in the transverse direction, and protrude from the side ends of the middle baffle in the longitudinal direction. The first light-blocking parts are welded to the shell.

2. The light shielding structure of the battery cell assembly according to claim 1, characterized in that: The middle baffle has two adjacent side surfaces, and one of the side surfaces is located at one end of the middle baffle along the longitudinal direction. The middle baffle is provided with a notch penetrating the two side surfaces.

3. The light shielding structure of the battery cell assembly according to claim 1, characterized in that: Both ends of each of the middle baffles in the transverse direction are provided with guide parts, and each of the guide parts abuts against a wall surface of the guide opening.

4. The light shielding structure of the battery cell assembly according to claim 1, characterized in that: The material of the end shading plate is set to be elastic material.

5. The light shielding structure of the battery cell assembly according to claim 4, characterized in that: The transverse thickness of each middle baffle is not less than the distance between the two transverse walls of the corresponding guide opening, so that the end shading plate is deformed by force to form a second light blocking portion exposed on the side of the corresponding guide opening facing away from the other end shading plate.

6. The light shielding structure of the battery cell assembly according to claim 1, characterized in that: The housing comprises two end plates, which are arranged on one side of the corresponding end shading plate facing away from the other end shading plate, and each end plate is provided with a limiting hole in the longitudinal direction; Each of the first light blocking portions is inserted into the corresponding limiting hole.

7. The light shielding structure of the battery cell assembly according to claim 6, characterized in that: Both side ends of the first light shielding portion in the transverse direction are provided with structural adhesive extending in the up-down direction, and the structural adhesive is located between the end plate and the end light shielding plate.

8. The light shielding structure of the battery cell assembly according to claim 6, characterized in that: Each of the end plates is provided with a plurality of limit parts at intervals in the vertical direction; A plurality of matching parts are provided at intervals in the up-down direction at one end of the middle plate along the longitudinal direction, and the plurality of matching parts correspond to the plurality of limiting parts, and each matching part abuts against the corresponding limiting part to limit the relative angle between the end plate and the middle plate.

9. The light shielding structure of the battery cell assembly according to claim 8, characterized in that: A matching groove is concavely provided at one end of the first light shielding portion in the longitudinal direction and is arranged to penetrate in the transverse direction; One of the limiting parts is disposed in the limiting hole, and the limiting part can extend into the matching groove to abut against the groove bottom of the matching groove; The plurality of mating portions include the mating groove.

10. A battery cell module, characterized in that: It comprises a light-shielding structure for a battery cell assembly as described in any one of claims 1 to 9.

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