Battery

Abstract

The utility model relates to the technical field of batteries, and discloses a battery, which comprises a box body provided with a battery cell group mounting cavity; the battery cell group is arranged in the battery cell group mounting cavity, guide plates are arranged at the two end parts of the battery cell group, and clamping parts are arranged at the bottom ends of the guide plates; the guide limiting part is arranged on the inner wall of the battery cell assembly cavity and corresponds to the position of the guide plate, the farther the guide limiting part is away from the opening of the battery cell assembly mounting cavity, the larger the protruding amplitude is, and a limiting surface is arranged at the bottom, away from the opening of the battery cell assembly mounting cavity, of the guide limiting part; and the clamping part can slide down along the guide limiting part and is clamped into one side of the bottom of the limiting surface. According to the battery disclosed by the utility model, the battery cell group can be better mounted and positioned.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to a battery. Background Art

[0002] With the country's emphasis on the environment and the increasing environmental awareness of people, new energy electric vehicles have attracted more and more attention. The current battery includes a box body and a battery cell group. The battery cell group is installed in the inner cavity of the box body and is pressed and fixed.

[0003] Before the existing battery cell group is installed in the box body, it is necessary to squeeze the battery cells of the battery cell group from opposite sides, so that the overall arrangement length of the battery cell group is less than the total length of the opening of the inner cavity of the box body, and then the battery cells can be put into the inner cavity. During the use of the battery cell group, it is easy to slide out towards the opening direction of the box body due to external vibration, resulting in deviation of the position of the battery cell group.

[0004] In view of this, it is necessary to design a battery to better install and position the battery cell group. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a battery that can better install and position the battery cell group.

[0006] To achieve this purpose, the utility model adopts the following technical solutions:

[0007] A battery, comprising:

[0008] A box body provided with a battery cell group installation cavity;

[0009] A battery cell group disposed in the battery cell group installation cavity, with guide plates provided at both ends of the battery cell group, and clamping portions provided at the bottom ends of the guide plates; and,

[0010] A guiding and limiting portion disposed at the inner wall of the battery cell installation cavity and corresponding to the position of the guide plate. The farther the guiding and limiting portion is from the opening of the battery cell group installation cavity, the greater the protruding amplitude, and a limiting surface is provided at the bottom of the guiding and limiting portion away from the opening of the battery cell group installation cavity. The clamping portion can slide down along the guiding and limiting portion and be clamped into the bottom side of the limiting surface.

[0011] Optionally, a guiding inclined surface is provided at the bottom end of the guide plate;

[0012] The guiding inclined surface is provided on the side of the guide plate close to the first side plate to guide the guide plate into the inner cavity of the box body.

[0013] Optionally, the box body includes a first side plate and a bottom plate for supporting the battery cell group. The bottom plate is fixedly connected to the first side plate. The first side plate constitutes a part of the inner wall of the battery cell group installation cavity, and the guiding and limiting portion is arranged on one side surface of the first side plate close to the battery cell group installation cavity;

[0014] The bottom plate, the first side plate and the limiting surface form a clamping groove for clamping the clamping portion.

[0015] Optionally, the guiding and limiting portion has a guiding surface, and the guiding surface is an inclined plane, a concave arc surface or a convex arc surface.

[0016] Optionally, an avoidance groove is arranged on the guiding plate;

[0017] When the clamping portion is clamped into one side at the bottom of the limiting surface, the guiding and limiting portion is placed in the avoidance groove.

[0018] Optionally, in the direction perpendicular to the side surface of the first side plate, the thickness of the guiding and limiting portion is smaller than the depth of the avoidance groove.

[0019] Optionally, the battery cell group further includes a plurality of battery cells arranged in a row. A large-surface insulation buffer pad is arranged on the large surface of the battery cell, and the guiding plate is parallel to the large-surface insulation buffer pad;

[0020] The battery cell has end side surfaces of adjacent large surfaces, and the end side surfaces are perpendicular to the first side plate; an insulation partition plate is further arranged on the end side surfaces.

[0021] Optionally, it further includes being fixedly connected to the beam body of the bottom plate;

[0022] The beam body, the bottom plate and the first side plate enclose at least one battery cell group installation cavity, and a heat-conducting glue layer is arranged on the bottom plate.

[0023] Optionally, the beam body includes at least two vertical beams and one cross beam. The bottom plate, the two vertical beams, the first side plate and the one cross beam enclose the battery cell group installation cavity

[0024] After the battery cell group is installed into the battery cell group installation cavity, the gap between the vertical beam and the battery cell group is filled with potting glue.

[0025] Optionally, the bottom plate includes a first stamping plate and a second stamping plate. The first stamping plate is installed on the second stamping plate to form a cooling circuit;

[0026] The bottom plate is respectively welded and connected to the beam body and the first side plate.

[0027] Compared with the prior art, the utility model has the following beneficial effects:

[0028] In this embodiment, during the process of installing the battery cell group into the box body, the clamping part slides down along the guiding and limiting part, so as to accurately install the battery cell group at a suitable position in the box body; in addition, the guiding and limiting part can limit the clamping part, so as to effectively prevent the battery cell group from sliding out towards the opening direction of the box body, effectively improving the positioning ability of the battery cell group and enhancing the safety of the battery. Description of the Drawings

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0030] The structures, ratios, sizes, etc. shown in the drawings of this specification are only used to cooperate with the content disclosed in the specification for those who are familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention. Therefore, they do not have technical essence. Any modification of the structure, change of the proportional relationship or adjustment of the size, without affecting the effects that the present invention can produce and the purposes that can be achieved, should still fall within the scope covered by the technical content disclosed in the present invention.

[0031] Figure 1 It is a three-dimensional structure diagram of the battery provided by the embodiment of the present invention;

[0032] Figure 2 It is an exploded structure diagram of the battery provided by the embodiment of the present invention;

[0033] Figure 3 It is a top view of the battery provided by the embodiment of the present invention;

[0034] Figure 4 It is Figure 3 a sectional view of the A-A section in

[0035] Figure 5 It is Figure 4 an enlarged view of position A in

[0036] Figure 6 It is an axonometric sectional view of the A-A section in 3;

[0037] Figure 7 It is Figure 6 an enlarged view of position B in

[0038] Figure 8 It is a three-dimensional structure diagram of the box body provided by the embodiment of the present invention;

[0039] Figure 9 For Figure 8 An enlarged schematic view of position C in it;

[0040] Figure 10 This is a three-dimensional structure schematic diagram of the guide plate provided by the embodiment of the present utility model.

[0041] Illustration description: 1. Box body; 11. First side plate; 12. Bottom plate; 13. Second side plate; 101. Guide and limit part; 102. Limiting surface; 2. Battery cell group; 21. Guide plate; 201. Clamping part; 202. Guide inclined surface; 203. Avoidance groove; 22. Battery cell; 23. Large surface insulation buffer pad; 24. Insulation partition plate. Specific embodiments

[0042] To illustrate in detail the possible application scenarios, technical principles, specific implementable solutions, achievable purposes and effects of this application, etc., the following will be described in detail with reference to the specific examples listed and in conjunction with the accompanying drawings. The embodiments described herein are only used to more clearly illustrate the technical solutions of this application, so they are only examples and cannot be used to limit the protection scope of this application.

[0043] Referring to "embodiment" herein means that the specific features, structures or characteristics described in connection with the embodiment may be included in at least one embodiment of this application. The term "embodiment" that appears in various positions in the specification does not necessarily refer to the same embodiment, nor does it particularly limit its independence or relevance to other embodiments. In principle, in this application, as long as there is no technical contradiction or conflict, the technical features mentioned in each embodiment can be combined in any way to form the corresponding implementable technical solutions.

[0044] Unless otherwise defined, the meanings of the technical terms used herein are the same as those generally understood by those skilled in the technical field to which this application belongs; the use of the relevant terms herein is only for describing specific embodiments and is not intended to limit this application.

[0045] In the description of this application, the term "and / or" is an expression used to describe the logical relationship between objects, indicating that there can be three relationships, for example, A and / or B, which means: there is A, there is B, and there is both A and B at the same time. In addition, the character " / " herein generally represents an "or" logical relationship between the associated objects before and after.

[0046] In this application, terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual quantity, primary or secondary, or order relationship between these entities or operations.

[0047] Without further limitation, in this application, the terms "including", "comprising", "having" or other similar expressions used in a statement are intended to cover non-exclusive inclusion. These expressions do not exclude the possibility that there may be additional elements in a process, method or product that includes the described elements. Thus, a process, method or product that includes a series of elements may include not only those defined elements, but also other elements not explicitly listed, or elements inherent to such a process, method or product.

[0048] Similar to the understanding in the "Examination Guidelines", in this application, expressions such as "greater than", "less than", "exceeding" are understood not to include the number itself; expressions such as "above", "below", "within" are understood to include the number itself. In addition, in the description of the embodiments of this application, the meaning of "a plurality of" is two or more (including two). Similar expressions related to "many", such as "multiple groups", "multiple times", etc., are understood in this way, unless otherwise specifically defined.

[0049] In the description of the embodiments of this application, the spatially related expressions used, such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "perpendicular", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the specific embodiment or the drawing. This is only for the convenience of describing the specific embodiments of this application or for the reader's understanding, and does not indicate or imply that the device or component referred to must have a specific position, a specific orientation, or be constructed or operated in a specific orientation. Therefore, it should not be construed as a limitation on the embodiments of this application.

[0050] Unless otherwise clearly specified or limited, in the description of the embodiments of this application, the terms "installed", "connected", "joined", "fixed", "set", etc. should be understood in a broad sense. For example, the "connection" can be a fixed connection, a detachable connection, or an integral setting; it can be a mechanical connection, an electrical connection, or a communication connection; it can be directly connected, or indirectly connected through an intermediate medium; it can be the communication inside two elements or the interaction relationship between two elements. For those skilled in the art to which this application pertains, the specific meanings of the above terms in the embodiments of this application can be understood according to specific circumstances.

[0051] The embodiment of the present utility model provides a battery, which can more accurately assemble the battery cell group 2 into the box body 1, effectively improves the fixing effect on the battery cell group 2, and can effectively prevent the battery cell group 2 from sliding out of the box body 1.

[0052] Please refer to Figures 1 to 10, the battery includes:

[0053] A box body 1, provided with a battery cell group installation cavity 10; a battery cell group 2, arranged in the battery cell group installation cavity 10, with guide plates 21 arranged at both ends of the battery cell group, and a clamping part 201 arranged at the bottom end of the guide plate 21; and, a guiding and limiting part 101, arranged at the inner wall of the battery cell installation cavity 10 and corresponding to the position of the guide plate 21. The farther the guiding and limiting part 101 is from the opening of the battery cell group installation cavity 10, the greater the protruding amplitude. And a limiting surface 102 is arranged at the bottom of the guiding and limiting part 101 away from the opening of the battery cell group installation cavity 10. The clamping part 201 can slide down along the guiding and limiting part 101 and be clamped into the bottom side of the limiting surface 102. It should be noted here that the guiding and limiting part 101 has a guiding function, enabling the battery cell group 2 to slide down along the guiding and limiting part, so as to accurately install the battery cell group 2 into the correct position of the box body 1. In addition, after the battery cell group 2 is installed in the box body 1, the clamping part 201 is located at the bottom side of the guiding and limiting part 101 and is restricted by the limiting surface 102, so that the battery cell group 2 cannot easily slide out of the battery cell group installation cavity 10 of the box body 1. The structure in this embodiment is not only beneficial to accurately installing the battery cell group 2 into the box body 1, but also beneficial to improving the fixing effect on the battery cell group 2, and can effectively prevent the battery cell group 2 from sliding out of the battery cell group installation cavity 10 of the box body 1.

[0054] Optionally, a guiding inclined surface 202 is arranged at the bottom end of the guide plate 21; the guiding inclined surface 202 is arranged on the side of the guide plate 21 close to the first side plate 11 to guide the guide plate 21 into the battery cell group installation cavity 10 of the box body 1. Specifically, before installing the battery cell group 2, it is necessary to compress the battery cell group 2 to shorten the length of the battery cell group 2. The bottom end of the guide plate 21 is partially inserted into the box body 1, and the guiding inclined surface 202 abuts against the top edge of the first side plate 11; at this time, the battery cell group 2 can be directly pressed down, and under the guiding action of the guiding inclined surface 202, the battery cell group 2 gradually slides into the box body 1. In this embodiment, it is not necessary to compress the length of the battery cell group 2 to be less than the opening length of the box body 1. Instead, through the guiding and sliding action of the guiding inclined surface 202, the possibility of damaging the battery cell 22 during the pressing and compressing process of the battery cell group 2 is effectively reduced, which is beneficial to improving the assembly yield of the battery.

[0055] Optionally, the box body 1 includes a first side plate 11 and a bottom plate 12 for supporting the battery cell group 2. The bottom plate 12 is fixedly connected to the first side plate 11. The first side plate 11 constitutes a part of the inner wall of the battery cell group installation cavity 10. The guiding and limiting part 101 is arranged on the side surface of the first side plate 11 close to the battery cell group installation cavity 10; the bottom plate 12, the first side plate 11 and the limiting surface 102 form a card slot for clamping the clamping part 201. When the battery cell group 2 is installed in the box body 1, the clamping part 201 is located in the card slot, and the card slot can effectively limit the sliding of the clamping part 201 in the direction of the outlet of the box body 1, so as to effectively avoid the situation that the battery cell group 2 slides in the direction of the outlet of the box body 1.

[0056] Optionally, the guiding and limiting portion 101 has a guiding surface. As Figure 9 shown, the guiding surface is an inclined plane. Of course, the guiding surface can also be a concave arc surface or a convex arc surface. In the direction along the box-in direction, the guiding surface gradually moves away from the plate surface of the first side plate 11.

[0057] Optionally, an avoidance groove 203 is provided on the guiding plate 21; when the clamping portion 201 is clamped into the bottom side of the limiting surface 102, the guiding and limiting portion 101 is placed in the avoidance groove 203. The groove wall of the avoidance groove 203 fits the side wall of the guiding and limiting portion 101, so that the guiding and limiting portion 101 has a good guiding effect, that is, the battery pack 2 can only be inserted into the box body 1 along the side wall of the guiding and limiting portion 101.

[0058] Optionally, in the direction perpendicular to the side surface of the first side plate 11, the thickness of the guiding and limiting portion 101 is less than the depth of the avoidance groove 203. The guiding and limiting portion 101 does not apply pressure to the battery cell group 2 after the battery cell group 2 is assembled, but only plays a limiting role, thus avoiding the problem that the battery cells 22 are over-pressed after being assembled.

[0059] Optionally, the battery cell group 2 further includes a plurality of battery cells 22 arranged in a row. A large-surface insulating buffer pad 23 is provided on the large surface of the battery cell 22, and the guiding plate 21 is parallel to the large-surface insulating buffer pad 23. Specifically, the large-surface insulating buffer pad 23 is an elastic pad, so that it can become thinner when pressed, so that the length of the entire battery cell group 2 becomes shorter, making it easier for the battery cell group 2 to be loaded into the box body 1. It should also be noted that the large-surface insulating buffer pad 23 also has an insulating effect.

[0060] Optionally, the battery cell 22 has an end side surface adjacent to the large surface, and the end side surface is perpendicular to the first side plate 11; an insulating partition plate 24 is also provided on the end side surface. Specifically, in the case where the battery cell group 2 has at least two columns of battery cells 22, the insulating partition plate 24 can effectively prevent conduction between different columns of battery cells 22, thereby improving the overall safety of the battery.

[0061] Optionally, the battery further includes being fixedly connected to the beam body 13 of the bottom plate 12; at least one battery cell group installation cavity 10 is formed by enclosing the beam body 13, the bottom plate 12 and the first side plate 11, and a heat-conducting adhesive layer 14 is provided on the bottom plate 12. In this embodiment, the beam body 13 may include a plurality of vertical beams 131 and a plurality of cross beams 132, so as to cooperate with the first side plate 11 to define a larger number of battery cell group installation cavities 10. In this embodiment, the number of battery cell group installation cavities 10 can be 1 or an even number. It should also be added that the setting of the heat-conducting adhesive layer 14 can quickly transfer the heat of the battery cells to the bottom plate 12, thereby improving the cooling efficiency of the battery cells.

[0062] In a specific embodiment, as Figure 8As shown, the beam body 13 includes at least two vertical beams 131 and one cross beam 132. The bottom plate 12, two vertical beams 131, the first side plate 11 and one cross beam 132 enclose to form a battery cell group installation cavity 10. After the battery cell group is installed in the battery cell group installation cavity 10, the gap between the vertical beam 131 and the battery cell group is filled with potting glue. It should be noted that the setting of the potting glue further improves the fixing effect on the battery cell group and is beneficial to improving the heat conduction effect, quickly transferring the heat of the battery cell group to the box body 1.

[0063] Optionally, the bottom plate 12 includes a first stamping plate and a second stamping plate. The first stamping plate is installed on the second stamping plate to form a cooling circuit. The bottom plate 12 is respectively welded to the first side plate 11 and the second side plate 13. The bottom plate 12 is formed by combining the first stamping plate and the second stamping plate, and the water-cooling flow channels can be correspondingly designed according to the specific position of the battery cell group 2 to improve the cooling efficiency. It should also be noted that the bottom plate 12 is welded to the beam body 13, which can effectively improve the load-bearing capacity. Preferably, the bottom plate 12 and the beam body 13 are connected by friction welding process.

[0064] Finally, it should be noted that although the above embodiments have been described in the text and drawings of the specification of the present application, the patent protection scope of the present application cannot be limited thereby. Any technical solution obtained by equivalent structure or equivalent process substitution or modification based on the substantial concept of the present application and using the content recorded in the text and drawings of the specification of the present application, as well as directly or indirectly implementing the technical solutions of the above embodiments in other related technical fields, etc., are all included in the patent protection scope of the present application.

Claims

1. A battery, characterized in that: include: The box body (1) is provided with a cell assembly installation cavity (10); A cell group (2) is arranged in the cell group installation cavity (10), guide plates (21) are arranged at both ends of the cell group, and a clamping portion (201) is arranged at the bottom end of the guide plate (21); and, The guide limit portion (101) is arranged on the inner wall of the cell group installation cavity (10) and corresponds to the position of the guide plate (21); the farther the guide limit portion (101) is from the opening of the cell group installation cavity (10), the greater the protrusion amplitude; and a limit surface (102) is arranged at the bottom of the guide limit portion (101) away from the opening of the cell group installation cavity (10); the clamping portion (201) can slide down along the guide limit portion (101) and be clamped on one side of the bottom of the limit surface (102).

2. The battery according to claim 1, characterized in that The box body (1) comprises a first side plate (11) and a bottom plate (12) for supporting the battery group (2), the bottom plate (12) being fixedly connected to the first side plate (11), the first side plate (11) constituting a part of the inner wall of the battery group installation cavity (10), and the guide limit portion (101) being arranged on a side plate surface of the first side plate (11) close to the battery group installation cavity (10); The bottom plate (12), the first side plate (11) and the limiting surface (102) form a clamping groove for clamping the clamping portion (201).

3. The battery according to claim 2, characterized in that A guiding inclined surface (202) is provided at the bottom end of the guide plate (21); The guide slope (202) is arranged on a side of the guide plate (21) close to the first side plate (11) so as to guide the guide plate (21) into the inner cavity of the box body (1).

4. The battery according to claim 1, characterized in that The guide limiting portion (101) has a guide surface, and the guide surface is an inclined plane, an inner concave arc surface, or an outer convex arc surface.

5. The battery according to claim 2, characterized in that The guide plate (21) is provided with an avoidance groove (203); When the clamping portion (201) is clamped onto one side of the bottom of the limiting surface (102), the guiding limiting portion (101) is placed in the avoiding groove (203).

6. The battery according to claim 5, characterized in that In a direction perpendicular to the side surface of the first side plate (11), the thickness of the guide limiting portion (101) is less than the depth of the avoidance groove (203).

7. The battery according to claim 2, characterized in that The battery cell group (2) further comprises a plurality of battery cells (22) arranged in an array, a large-surface insulating buffer pad (23) being arranged on a large surface of the battery cell (22), and the guide plate (21) is parallel to the large-surface insulating buffer pad (23); The battery core (22) has an end side surface adjacent to the large surface, and the end side surface is perpendicular to the first side plate (11); an insulating partition plate (24) is also provided on the end side surface.

8. The battery according to claim 2, characterized in that It also includes a beam body (13) fixedly connected to the base plate (12); The beam body (13), the bottom plate (12) and the first side plate (11) enclose at least one battery cell assembly installation cavity (10), and a heat-conducting adhesive layer (14) is provided on the bottom plate (12).

9. The battery according to claim 8, characterized in that The beam body (13) comprises at least two vertical beams (131) and one horizontal beam (132); the bottom plate (12), the two vertical beams (131), the first side plate (11) and the horizontal beam (132) together form the battery cell assembly installation cavity (10). After the battery cell group is installed in the battery cell group installation cavity (10), the gap between the vertical beam (131) and the battery cell group is filled with potting glue.

10. The battery according to claim 9, characterized in that The bottom plate (12) comprises a first stamping plate and a second stamping plate, wherein the first stamping plate is mounted on the second stamping plate to form a cooling circuit; The bottom plate (12) is respectively connected to the beam body (13) and the first side plate (11) by welding.

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