Battery module and electric device

Abstract

The utility model relates to the technical field of energy storage devices, and discloses a battery module and a power utilization device, the battery module comprises a first battery cell support, the first battery cell support is provided with an insertion fixing hole for a cylindrical battery cell to be inserted, the first battery cell support is provided with a mounting side part parallel to the center line of the insertion fixing hole, and the first battery cell support is provided with a second battery cell support. A detection circuit board is detachably mounted on the mounting side part, and the detection circuit board is connected with an electric connecting sheet for collecting the voltage of the cylindrical battery cell. According to the battery module and the electric device provided by the utility model, the volume of the battery module can be reduced.

Description

Technical Field

[0001] This utility model relates to the field of energy storage device technology, and in particular to a battery module and an electrical device. Background Technology

[0002] A battery module is an energy storage component composed of multiple individual battery cells connected in series, parallel, or series-parallel configurations. Battery modules are widely used in electric vehicles, energy storage systems, and portable electronic devices.

[0003] Existing battery modules include a cell support, a testing circuit board, and a mounting bracket. The cell support holds the cylindrical cells, and the mounting bracket is mounted on the cell support to support and hold the testing circuit board. The testing circuit board is used to detect data such as the output voltage and temperature of the cylindrical cells. Currently, the testing circuit board needs to be mounted on the mounting bracket, which is typically located on the top side of the cell support. This not only makes the battery module larger but also makes the assembly of the testing circuit board more complicated.

[0004] Therefore, it is necessary to design a battery module and power supply device that can help reduce the size of the battery module.

[0005] The above information is provided as background information only to aid in understanding this disclosure and does not constitute an assertion or admission that any of the above content can be used as prior art relative to this disclosure. Utility Model Content

[0006] This utility model provides a battery module and an electrical device that can help reduce the size of the battery module.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A battery module includes a first cell support, the first cell support having an insertion fixing hole for inserting a cylindrical cell; the first cell support has a mounting side parallel to the center line of the insertion fixing hole, a detection circuit board is detachably mounted on the mounting side, and the detection circuit board is connected to an electrical connection piece for collecting the voltage of the cylindrical cell.

[0009] Optionally, the battery module also includes clamping screws;

[0010] A fixing post is formed on the mounting side, and a connecting threaded hole is provided on the fixing post; the detection circuit board has a voltage sampling electrode lug sleeved on the fixing post, and the electrical connection piece has a connecting part sleeved on the fixing post;

[0011] The clamping screw is screwed into the connecting threaded hole so that the pressure electrode lug and the electrical connection piece abut and conduct electricity.

[0012] Optionally, the top and bottom surfaces of the sampling electrode lugs are provided with copper cladding.

[0013] Optionally, the first cell support has a mounting end face perpendicular to the insertion fixing hole, the electrical connecting piece is laid on the mounting end face, and the electrical connecting piece is connected to the cylindrical cell in the insertion fixing hole through a welding through hole.

[0014] Optionally, the mounting end face has several rows of protrusions, each protrusion group including at least two first protrusions spaced apart, and the electrical connecting piece abuts against two rows of protrusions respectively.

[0015] Optionally, the battery module also includes a pressure plate;

[0016] The pressure plate is positioned below the top of the electrical connector to press down on the electrical connector, and the pressure plate has a positioning hole that is sleeved on the first protrusion.

[0017] Optionally, the battery module further includes an insulating plate that presses against the pressure plate;

[0018] A second protrusion is provided on the top surface of the first protrusion, and the diameter of the second protrusion is smaller than the diameter of the first protrusion, and the insulating plate has a fixing through hole that matches the second protrusion.

[0019] Optionally, the battery module further includes a second cell bracket, and the second cell bracket has the insertion fixing hole;

[0020] The first cell bracket and the second cell bracket are arranged opposite to each other. One end of the cylindrical cell is inserted into the insertion and fixing hole of the first cell bracket, and the other end of the cylindrical cell is inserted into the insertion and fixing hole of the second cell bracket.

[0021] Optionally, the battery module further includes a second cell bracket that connects to the first cell bracket to completely secure the cylindrical cell;

[0022] The first cell support and the second cell support are arranged opposite to each other, and the two opposite sides of the detection circuit board are respectively connected to the first cell support and the second cell support.

[0023] An electrical device includes a battery module as described in any of the preceding claims.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] The battery module and power supply device provided by this utility model optimize the structure of the first cell support, allowing a detection circuit board to be directly mounted on the mounting side of the first cell support. The detection circuit board can connect to each cylindrical cell via electrical connectors, enabling the detection circuit board to detect the voltage data of each cylindrical cell. In this embodiment, the battery module does not require a mounting bracket, effectively reducing the overall size of the battery module.

[0026] This invention has other features and advantages that will be apparent from or will be set forth in detail in the accompanying drawings and the following detailed description, which together serve to explain the particular principles of this invention. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a three-dimensional schematic diagram of the battery module provided in an embodiment of the present utility model;

[0029] Figure 2 This is a side view schematic diagram of the battery module provided in an embodiment of the present utility model;

[0030] Figure 3 yes Figure 2 A schematic diagram of the AA cross-sectional structure of the battery module;

[0031] Figure 4 yes Figure 3 An enlarged view of the battery module at position A;

[0032] Figure 5 yes Figure 4 An enlarged schematic diagram of the battery module at position B;

[0033] Figure 6 This is a three-dimensional structural diagram of the battery module provided in this embodiment of the present invention when the insulating plate is hidden;

[0034] Figure 7 This is an installation diagram of the first and second battery cell brackets provided in this embodiment of the utility model.

[0035] Reference numerals: 1. First cell bracket; 101. Mounting side; 102. Fixing post; 2. Detection circuit board; 21. Voltage sampling electrode lug; 3. Electrical connection piece; 31. Connecting part; 4. Clamping screw; 5. First protrusion; 6. Pressure plate; 7. Insulating plate; 8. Second cell bracket; 100. Insertion fixing hole; 200. Welding through hole. Detailed Implementation

[0036] To illustrate the possible application scenarios, technical principles, implementable specific solutions, and achievable objectives and effects of this application in detail, the following description, in conjunction with the listed specific embodiments and accompanying drawings, provides a detailed explanation. The embodiments described herein are merely illustrative of the technical solutions of this application and are therefore intended to limit the scope of protection of this application.

[0037] In this document, the term "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The term "embodiment" appearing in various places throughout the specification does not necessarily refer to the same embodiment, nor does it specifically limit its independence or connection with other embodiments. In principle, in this application, as long as there are no technical contradictions or conflicts, the technical features mentioned in each embodiment can be combined in any way to form corresponding implementable technical solutions.

[0038] Unless otherwise defined, the technical terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the use of related terms herein is merely for the purpose of describing particular embodiments and is not intended to limit this application.

[0039] In the description of this application, the term "and / or" is used to describe the logical relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A exists, B exists, and A and B exist simultaneously. Additionally, the character " / " in this document generally indicates that the preceding and following objects have an "or" logical relationship.

[0040] In this application, terms such as “first” and “second” are used only to distinguish one entity or operation from another, and do not necessarily require or imply any actual quantity, hierarchy or order relationship between these entities or operations.

[0041] Unless otherwise specified, the use of terms such as “comprising,” “including,” “having,” or other similar expressions in this application is intended to cover non-exclusive inclusion, which does not exclude the presence of additional elements in a process, method, or product that includes the stated elements, such that a process, method, or product that includes a list of elements may include not only those defined elements but also other elements not expressly listed, or elements inherent to such a process, method, or product.

[0042] Similar to the understanding in the Examination Guidelines, in this application, expressions such as "greater than," "less than," and "exceeding" are understood to exclude the stated number; expressions such as "above," "below," and "within" are understood to include the stated number. Furthermore, in the description of the embodiments in this application, "multiple" means two or more (including two), and similar expressions related to "multiple" are also understood in this way, such as "multiple groups" and "multiple times," unless otherwise explicitly specified.

[0043] In the description of the embodiments of this application, the space-related expressions used, such as "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "vertical," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," indicate the orientation or positional relationship based on the orientation or positional relationship shown in the specific embodiments or drawings. They are only for the purpose of describing the specific embodiments of this application or for the reader's understanding, and do 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, they should not be construed as limitations on the embodiments of this application.

[0044] Unless otherwise expressly specified or limited, the terms "installation," "connection," "linking," "fixing," and "setting," as used in the description of the embodiments of this application, should be interpreted broadly. For example, "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 a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two components or the interaction between two components. For those skilled in the art to which this application pertains, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0045] Example 1

[0046] In view of the aforementioned defects in existing battery modules, the applicant, based on years of extensive practical experience and professional knowledge in the design and manufacture of such products, and in conjunction with the application of theoretical principles, actively conducted research and innovation in order to create a technology that could solve the defects in the existing technology and make the battery module more practical. After continuous research, design, and repeated prototype production and improvement, this utility model with real practical value was finally created.

[0047] Please refer to Figures 1 to 7 This utility model provides a battery module, characterized in that it includes a first cell support 1, which has an insertion fixing hole 100 for inserting a cylindrical cell. The specific location of the insertion fixing hole 100 can be found in [reference needed]. Figure 7 The end of the cylindrical battery cell is inserted into the first battery cell bracket 1 to achieve fixation.

[0048] The first cell support 1 has a mounting side 101 parallel to the center line of the insertion fixing hole 100. A detection circuit board 2 is detachably mounted on the mounting side 101, and the detection circuit board 2 is connected to an electrical connection piece 3 for collecting the voltage of the cylindrical cell.

[0049] In this embodiment, compared to existing battery modules, no mounting bracket is required, effectively reducing the overall size of the battery module. The power module in this embodiment optimizes the structure of the first cell support 1, allowing the detection circuit board 2 to be directly mounted on the mounting side 101. The electrical connector 3 connects the cylindrical cell and the detection circuit board 2, enabling the detection circuit board 2 to detect key data of the cylindrical cell, such as voltage and temperature data. Furthermore, the detection circuit board 2 is detachably mounted on the mounting side 101, facilitating assembly and disassembly.

[0050] Optionally, the first cell support 1 has a mounting end face perpendicular to the insertion fixing hole 100. An electrical connecting piece 3 is laid on the mounting end face and connected to the cylindrical cell in the insertion fixing hole 100 via a welding through hole 200. The electrical connecting piece 3 is welded and fixed to the end of the cylindrical cell. Specifically, the mounting end face and the mounting side 101 are perpendicular to each other, which prevents the extended laying of the electrical connecting piece 3 from interfering with the detection circuit board 2, further simplifying the assembly of the battery module.

[0051] Optionally, the battery module also includes a clamping screw 4; a fixing post 102 is formed on the mounting side 101, and the fixing post 102 is provided with a connecting threaded hole; the detection circuit board 2 has a sampling electrode ear 21 sleeved on the fixing post 102, and the electrical connecting piece 3 has a connecting part 31 sleeved on the fixing post 102; the clamping screw 4 is screwed into the connecting threaded hole so that the sampling electrode ear 21 and the electrical connecting piece 3 abut and conduct.

[0052] It should be noted that the clamping screws 4 not only serve to fix the detection circuit board 2, but also to maintain the conductive connection between the detection circuit board 2 and the electrical connection piece. Generally, at least two clamping screws 4 are provided on one side of the detection circuit board 2 to better fix the detection circuit board 2.

[0053] Optionally, a copper plating layer is provided on both the top and bottom surfaces of the voltage tap 21, which can improve the conductivity between the detection circuit board 2 and the electrical connection piece.

[0054] Optionally, the mounting end face has several rows of protrusions, each row including at least two first protrusions 5 spaced apart, and the electrical connecting piece 3 abuts against two rows of protrusions respectively, so that the electrical connecting piece 3 will not slide along the mounting end face. For example, the electrical connecting piece 3 may have two rows of sleeve holes, each row of sleeve holes fitting onto one row of protrusions. Alternatively, the opposite sides of the electrical connecting piece abut against two rows of protrusions respectively.

[0055] Optionally, the battery module also includes a pressure plate 6; the pressure plate 6 is disposed below the top of the electrical connecting piece 3 to press the electrical connecting piece 3, and the pressure plate 6 has a positioning sleeve hole fitted on the first protrusion 5. The pressure plate 6 presses down on the electrical connecting piece 3, thereby making the electrical connecting piece 3 fit against the mounting end face, improving the installation accuracy of the electrical connecting piece 3.

[0056] Optionally, the battery module further includes an insulating plate 7, which presses against the pressure plate 6. A second protrusion 51 is provided on the top surface of the first protrusion 5, and the diameter of the second protrusion 51 is smaller than the diameter of the first protrusion 5. The insulating plate 7 has a fixing through hole that matches the second protrusion 51. The insulating plate 7 is used to insulatingly separate two adjacent battery modules. In addition, the top surface of the first protrusion 5 can support the insulating plate 7, and the second protrusion 51 can accurately position the insulating plate 7.

[0057] Optionally, the battery module further includes a second cell bracket 8, and the second cell bracket 8 has an insertion fixing hole 100; the first cell bracket 1 and the second cell bracket 8 are arranged opposite to each other, one end of the cylindrical cell is inserted into the insertion fixing hole 100 of the first cell bracket 1, and the other end of the cylindrical cell is inserted into the insertion fixing hole 100 of the second cell bracket 8.

[0058] Optionally, the battery module further includes a second cell bracket 8 connected to the first cell bracket 1 to completely fix the cylindrical cell; the first cell bracket 1 and the second cell bracket 8 are arranged opposite to each other, and the opposite two sides of the detection circuit board 2 are respectively connected to the first cell bracket 1 and the second cell bracket 8.

[0059] Example 2

[0060] This embodiment discloses an electrical device, including a battery module as described in Embodiment 1. The electrical device can be an electric bicycle, an electric motorcycle, a new energy vehicle, or other electrically driven equipment that requires a battery module for power.

[0061] Finally, it should be noted that although the above embodiments have been described in the text and drawings of this application, this should not limit the scope of patent protection of this application. Any technical solutions that are based on the essential concept of this application and utilize the content described in the text and drawings of this application, resulting in equivalent structural or procedural substitutions or modifications, as well as the direct or indirect application of the technical solutions of the above embodiments to other related technical fields, are all included within the scope of patent protection of this application.

Claims

1. A battery module, characterized in that, Includes a first cell support (1), which is provided with an insertion fixing hole (100) for inserting a cylindrical cell. The first cell support (1) has a mounting side (101) parallel to the center line of the insertion fixing hole (100), and a detection circuit board (2) is detachably mounted on the mounting side (101), and the detection circuit board (2) is connected to an electrical connection piece (3) for collecting the voltage of the cylindrical cell.

2. The battery module according to claim 1, characterized in that, It also includes clamping screws (4); A fixing post (102) is formed on the mounting side (101), and a connecting thread hole is provided on the fixing post (102); the detection circuit board (2) has a sampling electrode ear (21) sleeved on the fixing post (102), and the electrical connection piece (3) has a connecting part (31) sleeved on the fixing post (102). The clamping screw (4) is screwed into the connecting threaded hole so that the pressure electrode lug (21) and the electrical connection piece (3) come into contact and conduct.

3. The battery module according to claim 2, characterized in that, The top and bottom surfaces of the pressure tap ear (21) are both provided with copper cladding.

4. The battery module according to claim 1, characterized in that, The first cell support (1) has a mounting end face perpendicular to the insertion fixing hole (100), the electrical connecting piece (3) is laid on the mounting end face, and the electrical connecting piece (3) is connected to the cylindrical cell in the insertion fixing hole (100) through the welding through hole (200).

5. The battery module according to claim 4, characterized in that, The mounting end face has several rows of protrusions, each protrusion group including at least two first protrusions (5) spaced apart, and the electrical connecting piece (3) abuts against two rows of protrusions respectively.

6. The battery module according to claim 5, characterized in that, It also includes a pressure plate (6); The pressure plate (6) is disposed on the top of the electrical connector (3) and presses the electrical connector (3) down, and the pressure plate (6) has a positioning sleeve hole sleeved on the first protrusion (5).

7. The battery module according to claim 6, characterized in that, It also includes an insulating plate (7) that presses against the pressure plate (6); The top surface of the first protrusion (5) is provided with a second protrusion (51), and the diameter of the second protrusion (51) is smaller than the diameter of the first protrusion (5), and the insulating plate (7) has a fixing through hole that matches the second protrusion (51).

8. The battery module according to claim 1, characterized in that, It also includes a second cell support (8), and the second cell support (8) has the insertion fixing hole (100). The first cell support (1) and the second cell support (8) are arranged opposite to each other. One end of the cylindrical cell is inserted into the insertion fixing hole (100) of the first cell support (1), and the other end of the cylindrical cell is inserted into the insertion fixing hole (100) of the second cell support (8).

9. The battery module according to claim 1, characterized in that, It also includes a second cell bracket (8) that connects to the first cell bracket (1) to completely fix the cylindrical cell; The first cell support (1) and the second cell support (8) are arranged opposite to each other, and the two opposite sides of the detection circuit board (2) are respectively connected to the first cell support (1) and the second cell support (8).

10. An electrical appliance, characterized in that, It includes a battery module as described in any one of claims 1 to 9.

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