Electric connector and battery pack

Abstract

The utility model provides an electric connector and a battery pack. The electric connecting piece comprises at least two conductive plates, all the conductive plates are arranged at intervals in the first direction, and a containing space is formed between every two adjacent conductive plates; and at least one spacing piece is arranged between any two adjacent conductive plates, and the spacing pieces are respectively connected with the two conductive plates so as to separate the accommodating space. According to the utility model, the problems that the electric connecting piece of the battery module in the prior art is poor in heat dissipation effect and cannot meet the high current-carrying requirement are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery technology field, specifically, relate to a kind of electric connector and battery pack. BACKGROUND

[0002] Current battery pack is generally realized by the welding of electric connector and cell pole post The series-parallel connection of multiple cells, so the electric connector carries the current transport of the entire battery system. For different single charging and discharging conditions, the current-carrying capacity of the electric connector needs to be selected according to the current size. With the increase of single capacity and charge-discharge rate in the current industry, the current-carrying capacity required by the electric connector is getting higher and higher, and the conventional scheme cannot meet the demand for high heat dissipation performance or high current-carrying capacity within the limited length and width of the electric connector.

[0003] Therefore, there is a problem of poor heat dissipation effect of the electric connector of the battery pack in the prior art, which cannot meet the high current demand. UTILITY MODEL CONTENTS

[0004] The main purpose of the utility model is to provide an electric connector and a battery pack to solve the problem of poor heat dissipation effect of the electric connector of the battery module in the prior art, which cannot meet the high current demand.

[0005] In order to achieve the above-mentioned purpose, according to one aspect of the utility model, an electric connector is provided, which comprises: at least two conductive plates, all the conductive plates are arranged at intervals along a first direction, and there is a containing space between any two adjacent conductive plates; a spacer is arranged between any two adjacent conductive plates, and the spacer is connected with the two conductive plates to separate the containing space.

[0006] Further, the spacer is a flat plate, an arc-shaped plate or a bent plate. When the spacer is a flat plate, the thickness direction of the conductive plate is parallel to the first direction, and the thickness direction of the conductive plate is perpendicular to the thickness direction of the spacer; and / or the included angle between the thickness direction of the spacer and the second direction is greater than or equal to 0 degrees and less than or equal to 90 degrees, and the first direction and the second direction are perpendicular to each other.

[0007] Further, the thickness of the conductive plate is greater than or equal to the thickness of the spacer.

[0008] Further, when there are multiple spacers between the two adjacent conductive plates, the multiple spacers are arranged at intervals along the second direction; or the multiple spacers are arranged at intervals along the third direction; or at least a part of the spacers are arranged at intervals along the second direction, and at least another part of the spacers are arranged at intervals along the third direction.

[0009] Further, the conductive plate has at least two pole post connecting holes, and the two pole post connecting holes are arranged at intervals along the second direction.

[0010] Further, the pole connecting holes of the two adjacent conductive plates are correspondingly arranged along the first direction.

[0011] Further, the conductive plate comprises a buffer section and at least two horizontal sections, the buffer section has a convex formed by an arc surface or a bent surface, the horizontal sections are arranged at intervals along the second direction, and there is at least one buffer section between any two adjacent horizontal sections; and / or the spacer is arranged between the two horizontal sections of the two conductive plates; and / or the convex directions of the two opposite buffer sections of the two adjacent conductive plates are the same; and / or in the second direction, the two horizontal sections at both ends have pole connecting holes.

[0012] Further, the spacer corresponding to the pole connecting hole is provided with a avoiding notch corresponding to the pole connecting hole.

[0013] Further, the conductive plate and the spacer are an integral structure; and / or the side surface of the spacer in the thickness direction has at least one heat dissipation convex.

[0014] According to another aspect of the utility model, a battery pack is provided, comprising the above-mentioned electric connector.

[0015] The technical scheme of the utility model is applied, the electric connector in the application comprises at least two conductive plates and a spacer. All the conductive plates are arranged at intervals along the first direction, and there is a containing space between the two adjacent conductive plates; at least one spacer is arranged between any two adjacent conductive plates, and the spacer is connected with the two conductive plates respectively to separate the containing space.

[0016] When the electric connector in the application is used, since the conductive plates are arranged at intervals and the spacer is arranged between the conductive plates, the containing space between the two conductive plates can be separated into multiple cavities by the spacer. Therefore, compared with the existing electric connector, the electric connector in the application has more heat exchange area with air under the condition of the same length and width of the electric connector, so that the electric connector in the application has better heat dissipation performance, and further has higher current carrying capacity. Therefore, the electric connector in the application effectively solves the problem of poor heat dissipation effect of the electric connector of the battery module in the prior art and the problem that the high current carrying demand cannot be met. BRIEF DESCRIPTION OF DRAWINGS

[0017] The drawings accompanying the specification of the application form part of the application and are used to provide a further understanding of the application, the illustrative embodiments of the application and their descriptions serve to explain the application, and do not constitute an improper limitation on the application. In the drawings:

[0018] Figure 1 The structure of the electric connector according to one specific embodiment of the utility model is shown in the structure schematic view;

[0019] Figure 2 A front view of the electrical connector in the present application is shown.

[0020] Wherein, the above figures include the following reference signs:

[0021] 10, conductive plate; 11, pole post connecting hole; 12, buffer section; 13, horizontal section; 20, spacer. DETAILED DESCRIPTION

[0022] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0023] It should be noted that, unless otherwise specified, all technical and scientific terms used in the present application have the same meaning as generally understood by those skilled in the art to which the present application belongs.

[0024] In the present application, unless otherwise specified, the orientation words such as "upper, lower, top, bottom" are generally directed to the direction shown in the drawings, or are directed to the vertical, perpendicular or gravity direction of the components themselves; similarly, for the convenience of understanding and description, "inner, outer" refers to the inner and outer relative to the contour of each component itself, but the above orientation words are not used to limit the present application.

[0025] In order to solve the problem of poor heat dissipation effect of the electrical connector of the battery module in the prior art and the inability to meet the high current demand, the present application provides an electrical connector and a battery pack.

[0026] Furthermore, the battery cells of the battery pack in the present application are connected in series and parallel through a plurality of the following electrical connectors to form a battery module.

[0027] As shown in Figure 1 and Figure 2 The electrical connector in the present application includes at least two conductive plates 10 and a spacer 20. All the conductive plates 10 are arranged at intervals along a first direction, and have an accommodation space between any two adjacent conductive plates 10; at least one spacer 20 is arranged between any two adjacent conductive plates 10, and the spacer 20 is connected with the two conductive plates 10 respectively to separate the accommodation space.

[0028] When the electric connector in the application is used, because the electrically conductive plates 10 are arranged at intervals and the spacers 20 are arranged between the electrically conductive plates 10, the accommodation space between the two electrically conductive plates 10 can be divided into multiple cavities by the spacers 20. Therefore, compared with the existing electric connector, the electric connector in the application has more heat exchange area with air under the condition of the same length and width of the electric connector, so that the electric connector in the application has better heat dissipation performance and can have higher current carrying capacity. Therefore, the electric connector in the application effectively solves the problem that the heat dissipation effect of the electric connector of the battery module in the prior art is poor and cannot meet the high current carrying requirement.

[0029] In the application, the first direction can be the thickness direction of the electrically conductive plate 10, the second direction can be the current transmission direction of the electric connector or the length direction of the electrically conductive plate 10, and the third direction is the width direction of the electrically conductive plate 10, so the first direction, the second direction and the third direction are perpendicular to each other. In addition, as shown in Figure 1 and Figure 2 The first direction can be the Z-axis direction, the second direction can be the X-axis direction, and the third direction can be the Y-axis direction.

[0030] The spacer 20 and the electrically conductive plate 10 can be made of the same material. In the application, the spacer 20 can be plate-shaped, for example, the spacer 20 can be flat, arc-shaped or bent, and is arranged between adjacent electrically conductive plates 10. In other possible embodiments, the spacer 20 can also be columnar, and the application does not specifically limit the arrangement mode of the spacer 20. In the following embodiments, the spacer 20 is taken as an example for illustration.

[0031] Optionally, the thickness direction of the electrically conductive plate 10 is perpendicular to the thickness direction of the spacer 20. Of course, the angle relationship between the thickness direction of the electrically conductive plate 10 and the thickness direction of the spacer 20 can also be adaptively adjusted according to actual design requirements.

[0032] Optionally, the included angle between the thickness direction of the spacer 20 and the second direction is greater than or equal to 0 degrees and less than or equal to 90 degrees, and the first direction and the second direction are perpendicular to each other. That is, in the application, the thickness direction of the spacer 20 can be parallel or perpendicular to the length direction of the electrically conductive plate 10, or the thickness direction of the spacer 20 is arranged obliquely relative to the length direction of the electrically conductive plate 10. In one specific embodiment of the application, the thickness direction of the spacer 20 is parallel to the current transmission direction of the electric connector.

[0033] In the application, as shown in Figure 1As shown, the thickness direction of the spacer 20 and the current transmission direction of the electric connection member can be parallel to the horizontal direction, and the thickness direction of the conductive plate 10 can be parallel to the vertical direction.

[0034] In the embodiment shown in FIG. 1, the spacer 20 is vertically arranged between the two conductive plates 10, and the length direction of the spacer 20 is the Y-axis direction, or the angle between the length direction of the spacer 20 and the length direction of the conductive plate 10 is 90 degrees. Of course, in the present application, the angle between the length direction of the spacer 20 and the length direction of the conductive plate 10 can be adjusted, or the angle between the thickness direction of the spacer 20 and the horizontal direction can be adjusted, so as to adjust the heat exchange area of the cavity surrounded by the spacer 20 and the conductive plate 10. Figure 1 Figure 2 In the embodiment shown in FIG. 1, the thickness of the conductive plate 10 is greater than or equal to the thickness of the spacer 20. By such arrangement, not only the flatness of the surface of the conductive plate 10 can be ensured, but also the strength of the whole electric connection member can be effectively ensured, so as to prevent the electric connection member from being deformed during use.

[0035] Optionally, when there are multiple spacers 20 between the two adjacent conductive plates 10, the multiple spacers 20 are arranged in the current transmission direction of the electric connection member.

[0036] Optionally, when there are multiple spacers 20 between the two adjacent conductive plates 10, the multiple spacers 20 are arranged in the width direction of the conductive plate.

[0037] Optionally, when there are multiple spacers 20 between the two adjacent conductive plates 10, at least part of the multiple spacers 20 are arranged in the current transmission direction of the electric connection member, and at least another part of the multiple spacers 20 are arranged in the width direction of the conductive plate.

[0038] Of course, in the present application, the multiple spacers 20 can also be arranged in an irregular form between the two conductive plates 10. In the present application, the positional relationship between the spacer 20 and the current transmission direction of the electric connection member can also be adaptively adjusted.

[0039] Of course, in the present application, the multiple spacers 20 can also be arranged in an irregular form between the two conductive plates 10. In the present application, the positional relationship between the spacer 20 and the current transmission direction of the electric connection member can also be adaptively adjusted.

[0040] ​Optionally, the conductive plate 10 has at least two pole connecting holes 11, and the two pole connecting holes 11 are arranged at intervals along the length direction of the conductive plate 10. In one specific embodiment of the present application, the conductive plate 10 has two pole connecting holes 11, and each conductive plate 10 has the same structure, and the two pole connecting holes 11 of the two adjacent conductive plates 10 are arranged opposite to each other. Specifically, the pole connecting holes 11 of the two adjacent conductive plates 10 are arranged opposite to each other along the thickness direction of the conductive plate 10. Thus, the pole of the battery cell can be more easily inserted into the pole connecting holes 11 of different conductive plates 10, and the pole and the electrical connector can be electrically connected.

[0041] Optionally, the conductive plate 10 comprises a buffer section 12 and at least two horizontal sections 13, the buffer section 12 has a convex formed by an arc surface or a bent surface, and the horizontal sections 13 are arranged at intervals along the current transmission direction of the electrical connector. In the present application, the length direction of the horizontal section 13 is parallel to the horizontal direction, and the electrical connector can be more easily connected to the pole by arranging the horizontal section 13, and the heat exchange area between the electrical connector and the external environment can be further increased by arranging the buffer section 12 under the condition that the overall length of the electrical connector is determined. In the present application, the convex direction of the buffer section 12 is the vertical direction or perpendicular to the length direction of the horizontal section 13 and the length direction of the spacer 20.

[0042] Optionally, there is at least one buffer section 12 between any two adjacent horizontal sections 13.

[0043] Optionally, the spacer 20 is arranged between the two horizontal sections 13 of the two conductive plates 10.

[0044] Optionally, the convex directions of the two opposite buffer sections 12 of the two adjacent conductive plates 10 are the same.

[0045] Optionally, in the current transmission direction of the electrical connector, the two horizontal sections 13 at both ends have pole connecting holes 11.

[0046] Optionally, the spacer 20 corresponding to the pole connecting hole 11 is provided with a avoiding gap corresponding to the pole connecting hole 11. And by arranging the avoiding gap, the spacer 20 can form a two-section structure, thereby avoiding the avoiding gap and the pole.

[0047] In one specific embodiment of the present application, the electrical connector has a plurality of spacers 20 and two conductive plates 10 which are spaced apart along the current transmission direction of the electrical connector and have the same structure, the conductive plate 10 has two horizontal sections 13, each of which has a pole connecting hole 11. And the two horizontal sections 13 are connected by a buffer section 12 with an arc-shaped protrusion, and the protrusion directions of the two opposite buffer sections 12 of the two adjacent conductive plates 10 are the same. And a plurality of spacers 20 are arranged in the corresponding area of the horizontal section 13 of the two conductive plates 10, and at this time in order to ensure that the spacer 20 does not affect the pole passing through the pole mounting hole of the two conductive plates 10, it is necessary to set a avoiding gap at the corresponding position of the spacer 20 corresponding to the pole mounting hole, that is, not all spacers 20 have avoiding gaps. And by setting the avoiding gap, the spacer 20 corresponding to the pole mounting hole can be in contact with the pole, thereby increasing the contact area of the electrical connector and the pole, and further improving the current carrying capacity of the electrical connector.

[0048] Optionally, between the two pole connecting holes 11 corresponding to the adjacent conductive plates 10, a columnar spacer 20 is arranged, so that when the pole of the battery cell passes through the opposite two pole connecting holes 11, the peripheral side is fitted with the columnar spacer 20, further improving the contact area of the electrical connector and the pole.

[0049] It should be noted that the number of conductive plates 10 in the present application can be more than two, at this time the electrical connector can form a multi-layer structure. And in order to adapt to the connection between a plurality of battery cells, the number of pole connecting holes 11 and horizontal sections 13 on the conductive plate 10 can also be more than two, which can be set according to actual needs.

[0050] Preferably, within the area formed by the horizontal section 13, the plurality of spacers 20 can be arranged at equal intervals.

[0051] Preferably, the conductive plate 10 and the spacer 20 are an integral structure. By such arrangement, the overall strength of the electrical connector can be effectively ensured.

[0052] And in the present application, in order to further improve the heat exchange area of the electrical connector, at least one heat dissipation protrusion can be arranged on the side surface in the thickness direction of the spacer 20, thereby increasing the heat exchange area of the electrical connector by increasing the surface area of the spacer 20. And the heat dissipation protrusion can be a hemispherical structure or a cylindrical structure. Of course, the heat dissipation protrusion can also be other polyhedral structures.

[0053] From the above description, it can be seen that the above-mentioned embodiments of the present application achieve the following technical effects:

[0054] 1. Effectively solve the problem that the electrical connector of the battery module in the prior art cannot meet the high current demand;

[0055] 2. Simple structure and stable performance.

[0056] Obviously, the above-described embodiments are only a 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 should belong to the protection scope of the present application.

[0057] It is to be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and / or "comprising," when used in this specification, specify the presence of stated features, steps, operations, devices, components and / or combinations thereof, but do not preclude the presence or addition of one or more other features, steps, operations, devices, components and / or combinations thereof.

[0058] It should be noted that the terms "first", "second", and the like, used in the specification and the claims of the application and the above-described accompanying drawings are used to distinguish similar objects, and do not necessarily have to be used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of the application described herein can be implemented in an order other than those illustrated or described herein.

[0059] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. An electrical connector, characterized in that, include: At least two conductive plates (10) are provided, all of which are spaced apart along a first direction, and there is an accommodating space between two adjacent conductive plates (10); A spacer (20) is provided between any two adjacent conductive plates (10), and the spacer (20) is connected to the two conductive plates (10) respectively to separate the accommodating space.

2. The electrical connector according to claim 1, characterized in that, The spacer (20) is a flat plate, an arc-shaped plate, or a bent plate. When the spacer (20) is a flat plate, The thickness direction of the conductive plate (10) is parallel to the first direction, and the thickness direction of the conductive plate (10) is perpendicular to the thickness direction of the spacer (20); and / or The angle between the thickness direction of the spacer (20) and the second direction is greater than or equal to 0 degrees and less than or equal to 90 degrees, and the first direction and the second direction are perpendicular to each other.

3. The electrical connector according to claim 1, characterized in that, The thickness of the conductive plate (10) is greater than or equal to the thickness of the spacer (20).

4. The electrical connector according to claim 1, characterized in that, When there are multiple spacers (20) between two adjacent conductive plates (10), The plurality of spacers (20) are spaced apart along the second direction; or The plurality of spacers (20) are spaced apart along a third direction; or At least a portion of the spacers (20) are spaced apart along a second direction, and at least another portion of the spacers (20) are spaced apart along a third direction.

5. The electrical connector according to any one of claims 1 to 4, characterized in that, The conductive plate (10) has at least two pole connection holes (11), which are spaced apart along a second direction.

6. The electrical connector according to claim 5, characterized in that, The pole connection holes (11) of two adjacent conductive plates (10) are respectively arranged along the first direction.

7. The electrical connector according to claim 5, characterized in that, The conductive plate (10) includes a buffer section (12) and at least two horizontal sections (13). The buffer section (12) has a protrusion formed by an arcuate surface or a bent surface. The horizontal sections (13) are spaced apart along the second direction. There is at least one buffer segment (12) between any two adjacent horizontal segments (13); and / or The spacer (20) is disposed between the two horizontal segments (13) of the two conductive plates (10); and / or The two opposing buffer segments (12) of two adjacent conductive plates (10) have the same convex direction; and / or In the second direction, the two horizontal segments (13) located at both ends have the pole connection holes (11).

8. The electrical connector according to claim 5, characterized in that, The spacer (20) corresponding to the pole connection hole (11) is provided with an avoidance notch.

9. The electrical connector according to any one of claims 1 to 4, characterized in that, The conductive plate (10) and the spacer (20) are integrally formed; and / or The spacer (20) has at least one heat dissipation protrusion on its side in the thickness direction.

10. A battery pack, characterized in that, Includes the electrical connector as described in any one of claims 1 to 9.

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