Circuit board support and battery pack

Abstract

The utility model provides a circuit board support and a battery pack, the circuit board support is provided with a first end face and a second end face which are oppositely arranged along a first direction, the extension direction of the first end face and the second end face is perpendicular to the first direction, and the first end face and the second end face are used for installing a circuit board; a mounting part is also arranged on the circuit board bracket; and the circuit board bracket is fixedly connected with the end plate of the battery module and / or the inner side wall of the battery pack along a first direction. By applying the technical scheme of the utility model, the technical problem of poor heat dissipation efficiency of the circuit board in the related technology can be improved.

Description

Technical Field

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

[0002] The power management system is particularly important in the application field of batteries, especially in electric vehicles, where it is the core part. In order to ensure that the battery is in good working condition and guarantee the battery life, the power management system monitors the battery voltage, current, temperature, battery capacity, health, safety warning and protection through the battery management chip, so as to achieve effective management of lithium batteries, so as to adjust the working state of the entire system, so that the energy consumption of the system matches the capacity that the power battery can currently provide.

[0003] In the related art, a power management system generally includes a housing and a circuit board. The circuit board is disposed in the housing, so that the circuit board cannot quickly exchange heat with the outside world, resulting in the circuit board being unable to dissipate heat in time, thereby reducing the heat dissipation efficiency of the circuit board. Utility Model Content

[0004] The embodiments of the utility model provide a circuit board bracket and a battery pack, which can improve the technical problem of poor heat dissipation efficiency of the circuit board in the related art.

[0005] In a first aspect, an embodiment of the utility model provides a circuit board bracket, the circuit board bracket having a first end face and a second end face arranged opposite to each other along a first direction, the extension direction of the first end face and the second end face being perpendicular to the first direction, and the first end face and the second end face being used for installing the circuit board; the circuit board bracket is fixedly connected to the end plate of the battery module and / or the inner side wall of the battery pack along the first direction.

[0006] In one embodiment, the first end surface and / or the second end surface has a positioning column protruding along the first direction, and at least a portion of the positioning column is connected to the circuit board and engaged with the circuit board to limit the position of the circuit board.

[0007] In one embodiment, the first end surface and / or the second end surface has a hook protruding along the first direction, and at least a portion of the hook abuts against the end surface of the circuit board to limit the position of the circuit board.

[0008] In one embodiment, the hook includes a first extension section and a second extension section connected in sequence and arranged at an angle, the first extension section extends along a first direction, and at least the lower end surface of the second extension section abuts against the end surface of the circuit board away from the circuit board bracket.

[0009] In one embodiment, the circuit board bracket further includes a receiving groove, which is arranged on the first end surface and / or the second end surface, and is used to receive the heat conducting member.

[0010] In one embodiment, an extension length of the accommodating groove in the first direction is L, and 0.5 mm≤L≤10 mm.

[0011] In one embodiment, the circuit board bracket includes: a main body having a first end face and a second end face; a bending portion arranged at both ends of the main body, the bending portion having a mounting hole, the axis of the mounting hole is parallel to the first direction, and the circuit board bracket is fixedly connected to the battery module through the mounting hole.

[0012] In one embodiment, the bending portion includes a first connecting segment and a second connecting segment connected in sequence and arranged at an angle, one end of the first connecting segment is connected to the body at an angle, the other end of the first connecting segment is connected to the second connecting segment, and the mounting hole is arranged on the second connecting segment.

[0013] In one embodiment, a reinforcement portion is provided between the first connecting segment and the second connecting segment, one end of the reinforcement portion is fixedly connected to the first connecting segment, and the other end of the reinforcement portion is fixedly connected to the second connecting segment.

[0014] In a second aspect, an embodiment of the utility model provides a battery pack, the battery pack comprising the above-mentioned circuit board bracket; a battery module, wherein the circuit board bracket is fixedly connected to a side wall of the battery module.

[0015] By applying the technical solution of the utility model, a circuit board is installed on the first end face and the second end face of the circuit board bracket, and the first end face and the second end face are arranged relative to each other along a first direction. At the same time, the circuit boards are fixedly connected to the end plates of the battery module and / or the inner walls of the battery pack along the first direction. In this way, the circuit board is exposed to the outside, which not only facilitates rapid heat exchange between the circuit board and the outside world, allowing the circuit board to dissipate heat in time, thereby improving the heat dissipation efficiency of the circuit board, but also can reasonably utilize the space of the circuit board bracket, install two circuit boards in a limited space, and improve the space utilization rate when installing the circuit board. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 This is a first-view stereoscopic schematic diagram of a circuit board bracket provided by an embodiment of the utility model;

[0018] Figure 2 is a perspective schematic diagram of a circuit board bracket provided by an embodiment of the utility model from a second viewing angle;

[0019] Figure 3 is a three-dimensional schematic diagram of a circuit board bracket provided by an embodiment of the utility model from a third viewing angle;

[0020] Figure 4 is a perspective schematic diagram of a circuit board bracket provided by an embodiment of the utility model from a fourth viewing angle;

[0021] Figure 5 This is a schematic diagram of the installation of a circuit board bracket and a circuit board provided in an embodiment of the utility model;

[0022] Figure 6 It is a schematic installation diagram of a circuit board bracket and a circuit board from another perspective provided by an embodiment of the utility model.

[0023] The above drawings include the following reference numerals:

[0024] 11. first end surface; 12. second end surface;

[0025] 20. Circuit board;

[0026] 30. Positioning column;

[0027] 40. hook; 41. first extension section; 42. second extension section;

[0028] 50. Receiving tank;

[0029] 60. Ontology;

[0030] 70. bending portion; 71. mounting hole; 72. first connecting section; 73. second connecting section;

[0031] 80. Strengthening Department;

[0032] 90. Avoidance slot;

[0033] X, first direction; Y, second direction. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0035] like Figures 1 to 6As shown, in the first aspect, an embodiment of the utility model provides a circuit board bracket, the circuit board bracket has a first end face 11 and a second end face 12 arranged opposite to each other along a first direction, the extension direction of the first end face 11 and the second end face 12 is perpendicular to the first direction, and the first end face 11 and the second end face 12 are used to install the circuit board 20; the circuit board bracket is fixedly connected to the end plate of the battery module and / or the inner side wall of the battery pack along the first direction.

[0036] By applying the technical solution of the present utility model, a circuit board 20 is installed on the first end face 11 and the second end face 12 of the circuit board bracket, and the first end face 11 and the second end face 12 are arranged relative to each other along a first direction, and at the same time, the circuit board 20 is fixedly connected to the end plate of the battery module and / or the inner wall of the battery pack along the first direction. In this way, the circuit board 20 is exposed to the outside, which not only facilitates rapid heat exchange between the circuit board 20 and the outside, so that the circuit board 20 can dissipate heat in time, thereby improving the heat dissipation efficiency of the circuit board 20, but also can reasonably utilize the space of the circuit board bracket, and install two circuit boards 20 in a limited space, thereby improving the space utilization rate when installing the circuit board 20.

[0037] In the present application, the first end face 11 and the second end face 12 extend along the second direction, and the first direction is X, and the second direction is Y. Optionally, the first end face 11 and the second end face 12 can also be arranged to extend along a third direction, as long as the use requirements of the circuit board bracket can be met, which can improve the applicability and scope of application of the circuit board bracket.

[0038] At the same time, the circuit board bracket is set to the above-mentioned structure, which utilizes the space in the battery pack in the second direction to avoid the phenomenon of insufficient space in the battery pack in the first direction, and the interface of the circuit board 20 is facing the side close to the battery module, which also facilitates the electrical connection between the interface of the circuit board 20 and the components of the battery module.

[0039] Further, the first end face 11 and / or the second end face 12 have positioning posts 30 protruding along the first direction, and the positioning posts 30 are at least partially connected to the circuit board 20 and are engaged with the circuit board 20 to limit the position of the circuit board 20. In the present application, the first end face 11 and the second end face 12 both have positioning posts 30 protruding along the first direction, and the positioning posts 30 are arranged at intervals along the circumference of the first end face 11. Such an arrangement can not only meet the fixing requirements for the circuit board 20, but also reduce the possibility of displacement of the circuit board 20 along the cross-sectional direction of the positioning posts 30, thereby ensuring the stability of the circuit board 20 during operation.

[0040] In the present application, the circuit board 20 is provided with a positioning hole, and a portion of the positioning column 30 can be connected with the positioning hole on the circuit board 20, and the portion passing through the positioning hole can be expanded and abutted against the end face of the circuit board 20, so that the positioning column 30 and the circuit board 20 are clamped and fixed. Since the positioning column 30 can maintain high-precision positioning in the direction perpendicular to the axis, the accuracy and stability of the positioning column 30 and the circuit board 20 during assembly and use are ensured. In addition, the bearing capacity of the positioning column 30 is large, so the positioning column 30 can withstand a certain axial load and shear force, which enables the positioning column 30 to maintain stable performance when bearing various loads, and is not easy to deform or damage, thereby helping to extend the service life of the circuit board bracket. At the same time, the installation and adjustment of the positioning column 30 are usually relatively simple and convenient, and the height, angle and other parameters of the positioning column 30 can be adjusted to adapt to different installation requirements, which makes the positioning column 30 more flexible and changeable in actual applications, and can meet the positioning requirements in different scenarios. The above structure is simple and easy to process, which can not only reduce the production cost of the component, but also facilitate the installation and disassembly of the positioning column 30 and the circuit board 20, and improve the disassembly efficiency between the two.

[0041] Specifically, in the present application, both the first end surface 11 and the second end surface 12 have a hook 40 protruding along the first direction, and the hook 40 at least partially abuts against the end surface of the circuit board 20 to limit the position of the circuit board 20 .

[0042] In the present application, the circuit board 20 is fixed by using the positioning column 30 and the hook 40. Compared with the traditional bolt connection, the design of the positioning column 30 and the hook 40 makes the assembly process very simple, without the need for complex tools or techniques, and reduces the complexity and time cost of assembly. At the same time, the above structure is compact, can achieve reliable connection in a limited space, and can also reduce the production cost of the components, thereby facilitating the mass production of the circuit board bracket.

[0043] Further, the hook 40 includes a first extension section 41 and a second extension section 42 which are connected in sequence and arranged at an angle, the first extension section 41 extends along the first direction, and at least the lower end surface of the second extension section 42 abuts against the end surface of the circuit board 20 away from the circuit board bracket. Optionally, in other embodiments of the present application, the inner side wall of the first extension section 41 may abut against the end surface of the circuit board 20, so that the contact area between the hook 40 and the circuit board 20 can be increased, thereby ensuring the stability of the connection between the two as much as possible.

[0044] In the present application, the circuit board bracket further includes a receiving groove 50, which is arranged on the first end face 11 and the second end face 12, and is used to accommodate a heat-conducting member. In the present application, the heat-conducting member is specifically a thermally conductive adhesive, which is arranged between the receiving groove 50 and the circuit board 20. Such an arrangement can improve the thermal conductivity between the circuit boards 20, and quickly conduct the heat of the circuit board 20 in the working state to the outside world, ensuring that the working temperature of the circuit board 20 is within a safe range. At the same time, since the thermally conductive adhesive usually has good adhesion properties and can firmly bond components, it can also improve the stability of the circuit board 20 when in use.

[0045] Further, the extension length of the receiving groove 50 in the first direction is L, 0.5mm≤L≤10mm. When L>10mm, the extension length of the receiving groove 50 in the first direction is too large, which will lead to the groove depth of the receiving groove 50 being too large, thereby increasing the interval between the groove bottom of the receiving groove 50 and the circuit board 20, resulting in the need for more volume of heat-conducting parts to fill the gap, which increases the cost of material use, which is not conducive to the mass production of the circuit boards 20. When L<0.5mm, the extension length of the receiving groove 50 in the first direction is too small, which will lead to the groove depth of the receiving groove 50 being too small, thereby reducing the interval between the groove bottom of the receiving groove 50 and the circuit board 20, resulting in a reduction in the containing volume of the receiving groove 50, so that the heat-conducting parts filled between the circuit board 20 and the receiving groove 50 are less, thereby reducing the thermal conductivity efficiency of the circuit board bracket. Therefore, 0.5mm≤L≤10mm can not only control the cost of material use, which is conducive to the mass production of the circuit boards 20, but also ensure that there are enough heat-conducting parts between the circuit board 20 and the receiving groove 50, thereby ensuring the thermal conductivity efficiency of the circuit board bracket. Optionally, L can be set to 0.5 mm, 5 mm or 10 mm, etc. The specific setting should be selected according to the use environment of the circuit board bracket, which can improve the application range of the circuit board bracket.

[0046] Specifically, the circuit board bracket includes: a body 60, having a first end face 11 and a second end face 12; a bending portion 70, which is arranged at both ends of the body 60, and a mounting hole 71 is provided on the bending portion 70, the axis of the mounting hole 71 is parallel to the first direction, and the circuit board bracket is fixedly connected to the battery module through the mounting hole 71. Such an arrangement can provide an installation space for the circuit board 20 on the first end face 11 to meet the requirements of double-sided installation. At the same time, in the present application, the mounting holes 71 are arranged at intervals along the circumference of the circuit board bracket, and multiple mounting holes 71 are distributed on the same circumference or approximate circumference. Such a layout can ensure that during the fixing or installation process, each mounting hole 71 can be uniformly stressed, avoiding deformation or damage of components caused by uneven stress, thereby helping to extend the service life of the circuit board bracket. At the same time, the circumferentially arranged mounting holes 71 can conveniently use positioning pins, bolts or other fasteners to accurately fix the circuit board bracket, which is conducive to improving the overall installation accuracy of the circuit board bracket.

[0047] Further, the bending portion 70 includes a first connecting section 72 and a second connecting section 73 which are connected in sequence and arranged at an angle, one end of the first connecting section 72 is connected to the body 60 at an angle, the other end of the first connecting section 72 is connected to the second connecting section 73, and the mounting hole 71 is arranged on the second connecting section 73. In the present application, the angle between the first connecting section 72 and the body 60 and the angle between the first connecting section 72 and the second connecting section 73 are both right angles, and the above structure is simple and easy to process, which is conducive to improving the processing efficiency of the circuit board bracket and can further reduce the production cost of the device.

[0048] Specifically, a reinforcing portion 80 is provided between the first connecting section 72 and the second connecting section 73, one end of the reinforcing portion 80 is fixedly connected to the first connecting section 72, and the other end of the reinforcing portion 80 is fixedly connected to the second connecting section 73. By providing the above structure, the reinforcing portion 80 can resist external loads, thereby enhancing the overall strength of the circuit board bracket and preventing the first connecting section 72 and the second connecting section 73 from being deformed or damaged due to excessive force. At the same time, the reinforcing portion 80 can also transfer stress from a high stress area to a low stress area, thereby improving the stress distribution of the bending portion 70, which helps to reduce stress concentration in the bending portion 70 and improve the reliability and durability of the bending portion 70.

[0049] In the present application, the circuit board bracket also includes an avoidance groove 90, which is arranged on the first connecting section 72 and corresponds to the connection port arrangement on the circuit board 20, so as to facilitate the electrical connection between the circuit board 20 and other components, thereby improving the connection efficiency of the circuit board 20 and facilitating user use.

[0050] like Figure 5 and Figure 6As shown, in the second aspect, an embodiment of the utility model provides a battery pack, the battery pack includes the above-mentioned circuit board bracket; a battery module, and the circuit board bracket is fixedly connected to the side wall of the battery module.

[0051] By applying the technical solution of the present utility model, a circuit board 20 is installed on the first end face 11 and the second end face 12 of the circuit board bracket, and the first end face 11 and the second end face 12 are arranged oppositely along the first direction, and the circuit board 20 is fixedly connected to the end plate of the battery module and / or the inner side wall of the battery pack along the first direction. In this way, the circuit board 20 is exposed to the outside, which not only facilitates the rapid heat exchange between the circuit board 20 and the outside, but also enables the circuit board 20 to dissipate heat in time, thereby improving the heat dissipation efficiency of the circuit board 20. At the same time, the space of the circuit board bracket can be reasonably utilized, and two circuit boards 20 can be installed in a limited space, thereby improving the space utilization rate when the circuit board 20 is installed. It should be noted that the terms used here are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "include" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0052] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps described in these embodiments do not limit the scope of the utility model. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be regarded as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once a certain item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0053] In the description of the present utility model, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present utility model; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0054] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0055] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the utility model.

[0056] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A circuit board bracket, characterized in that: The circuit board bracket has a first end face and a second end face arranged opposite to each other along a first direction, the extension direction of the first end face and the second end face is perpendicular to the first direction, and the first end face and the second end face are used for installing the circuit board; the circuit board bracket is fixedly connected to the end plate of the battery module and / or the inner side wall of the battery pack along the first direction.

2. The circuit board bracket according to claim 1, characterized in that: The first end surface and / or the second end surface has a positioning column protruding along the first direction, and the positioning column is at least partially connected to the circuit board and engaged with the circuit board to limit the position of the circuit board.

3. The circuit board bracket according to claim 1, characterized in that: The first end surface and / or the second end surface has a hook protruding along the first direction, and the hook at least partially abuts against the end surface of the circuit board to limit the position of the circuit board.

4. The circuit board bracket according to claim 3, characterized in that: The hook includes a first extension section and a second extension section which are connected in sequence and arranged at an angle, the first extension section extends along the first direction, and at least the lower end surface of the second extension section abuts against the end surface of the circuit board away from the circuit board bracket.

5. The circuit board bracket according to any one of claims 1 to 4, characterized in that: The circuit board bracket further comprises a receiving groove, wherein the receiving groove is arranged on the first end surface and / or the second end surface, and the receiving groove is used to receive a heat conducting member.

6. The circuit board bracket according to claim 5, characterized in that: An extension length of the accommodating groove in the first direction is L, and 0.5 mm ≤ L ≤ 10 mm.

7. The circuit board bracket according to any one of claims 1 to 4, characterized in that: The circuit board bracket comprises: A body having the first end surface and the second end surface; The bending part is arranged at both ends of the main body, and the bending part has a mounting hole, the axis of the mounting hole is parallel to the first direction, and the circuit board bracket is fixedly connected to the battery module through the mounting hole.

8. The circuit board bracket according to claim 7, characterized in that: The bending portion includes a first connecting section and a second connecting section which are connected in sequence and arranged at an angle, one end of the first connecting section is connected to the body at an angle, the other end of the first connecting section is connected to the second connecting section, and the mounting hole is arranged on the second connecting section.

9. The circuit board bracket according to claim 8, characterized in that: A reinforcement portion is provided between the first connecting section and the second connecting section, one end of the reinforcement portion is fixedly connected to the first connecting section, and the other end of the reinforcement portion is fixedly connected to the second connecting section.

10. A battery pack, characterized in that: The battery pack comprises: A circuit board bracket as claimed in any one of claims 1 to 9; The battery module, the circuit board bracket is fixedly connected to the end plate of the battery module and / or the inner side wall of the battery pack along the first direction.

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