Battery module

Abstract

The utility model relates to the technical field of batteries, in particular to a battery module. The battery module comprises a bracket, the bracket comprises a plurality of side surfaces, the plurality of side surfaces are exposed out of the outer surface of the battery module, a plurality of accommodating grooves are formed in the bracket, and the plurality of accommodating grooves are formed in at least one side surface; the plurality of batteries are arranged in one-to-one correspondence with the plurality of accommodating grooves, each battery is correspondingly accommodated and limited in one accommodating groove, and two adjacent batteries are electrically connected through an electric connecting piece. According to the battery module, the bracket and the plurality of batteries are arranged, the plurality of side surfaces of the bracket are exposed out of the outer surface of the battery module, the bracket is provided with the plurality of accommodating grooves, the plurality of batteries and the plurality of accommodating grooves are arranged in one-to-one correspondence, each battery is correspondingly accommodated and limited in one accommodating groove, and two adjacent batteries are electrically connected through the battery connecting piece; an additional shell is not needed, so that the overall size of the battery module can be reduced, and the use requirement of a relatively small use space environment is met.

Description

Technical Field

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

[0002] A battery module usually includes multiple batteries connected in series or in parallel to meet usage scenarios with higher output voltage or higher output current.

[0003] In the related art, a battery module generally includes an outer shell, an upper cover and a battery holder. Multiple batteries are mounted on the battery holder. The upper cover is welded to the holder. The upper cover and the outer shell are ultrasonically welded to form a sealed space therein. The battery holder and the battery are encapsulated in the sealed space.

[0004] However, the above battery module is relatively large in size and cannot meet the usage requirements in a smaller space environment. Utility Model Content

[0005] The technical problem to be solved by the embodiments of the utility model is to provide a battery module to solve the problem that the battery module in the prior art is large in size and cannot meet the use requirements of a small use space environment.

[0006] The utility model discloses a battery module, comprising:

[0007] A bracket, the bracket comprising a plurality of side surfaces, the plurality of side surfaces being arranged to expose the outer surface of the battery module, the bracket being provided with a plurality of receiving grooves, the plurality of receiving grooves being arranged on at least one of the side surfaces;

[0008] A plurality of batteries are arranged one by one with the plurality of accommodating slots, each battery is correspondingly contained in one accommodating slot, and two adjacent batteries are electrically connected via an electrical connector.

[0009] Optionally, the bracket includes a first side surface and a second side surface arranged opposite to each other along the thickness direction of the bracket, a plurality of the accommodating grooves are arranged on the first side surface and / or the second side surface, one end of the accommodating groove is an open end, and the battery module also includes a hard patch, which is mounted on the side of the shell where the accommodating groove is provided and covers the open end of the accommodating groove, and the sum of the distance between the first side surface and the second side surface and the thickness of the mounted hard patch is equal to a preset standard thickness.

[0010] Optionally, the battery module further includes a positive electrode connector and a negative electrode connector, the positive electrode connector is electrically connected to one of the batteries, and the negative electrode connector is electrically connected to the other battery. The battery module further includes an upper cover detachably connected to the bracket, and the positive electrode connector and the negative electrode connector are both arranged on the upper cover.

[0011] Optionally, one of the upper cover and the bracket is provided with a buckle, and the other is provided with a slot, and the buckle is engaged in the slot.

[0012] Optionally, at least one guiding post is provided on one of the upper cover and the bracket, and at least one guiding groove adapted to the guiding post is provided on the other, and each guiding post can be correspondingly received in a guiding groove.

[0013] Optionally, the battery is in interference fit with the corresponding receiving groove.

[0014] Optionally, a through hole communicating the receiving groove with the outside is provided on the bottom wall of the receiving groove, one end of the electrical connector passes through the open end of the receiving groove and is electrically connected to one battery, and the other end passes through the through hole and is electrically connected to the other battery.

[0015] Optionally, the battery is provided with a first electrode end and a second electrode end, the first electrode end and the second electrode end are respectively provided on opposite side surfaces of the battery, the first electrode end protrudes from the side surface of the battery and is correspondingly received in the through hole, and the second electrode end is arranged towards the open end of the receiving groove.

[0016] Optionally, a limiting groove is further provided on the bracket, the limiting groove correspondingly communicates with a receiving groove and a through hole, and the electrical connector is correspondingly limited in the limiting groove.

[0017] Optionally, the side surface of the bracket is a plane, and the side surface where the receiving groove is provided is recessed inward to form the receiving groove.

[0018] Compared with the prior art, the beneficial effects of the battery module provided by the embodiment of the present invention are as follows: by providing a bracket and a plurality of batteries, the plurality of side surfaces of the bracket are exposed on the outer surface of the battery module, a plurality of receiving grooves are provided on the bracket, the plurality of batteries and the plurality of receiving grooves are arranged in one-to-one correspondence, each battery is correspondingly received and limited in a receiving groove, and adjacent two batteries are electrically connected through a battery connector. Since the plurality of side surfaces of the bracket are exposed as the outer surface of the battery module, there is no need to additionally provide a housing, which can reduce the overall volume of the battery module, reduce the size of the battery module, and meet the use requirements of a smaller use space environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The technical solutions of the present invention will be further described in detail below with reference to the drawings and embodiments. In the drawings:

[0020] Figure 1 is a three-dimensional schematic diagram of the battery module provided by the embodiment of the present invention;

[0021] Figure 2 is Figure 1 A three-dimensional schematic diagram of the battery module from another angle;

[0022] Figure 3 yes Figure 2 An exploded schematic diagram of the battery module shown;

[0023] Figure 4 for Figure 1 Schematic diagram of the cross-sectional structure of the battery module in the thickness direction.

[0024] The reference numerals in the figures are:

[0025] 10. Bracket; 10a. First side surface; 10b. Second side surface; 11. Accommodating groove; 111. Through hole; 12. Slot; 13. Guide groove; 14. Limiting groove; 15. Side plane; 20. Battery; 21. First electrode terminal; 22. Second electrode terminal; 30. Electrical connector; 40. Positive electrode connector; 50. Negative electrode connector; 60. Upper cover; 61. Buckle; 62. Guide column. DETAILED DESCRIPTION

[0026] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. Now, in conjunction with the accompanying drawings, a preferred embodiment of the present utility model is described in detail.

[0027] The utility model embodiment provides a battery module, such as Figures 1 to 4 As shown, the battery module includes a bracket 10 and a plurality of batteries 20.

[0028] The bracket 10 includes a plurality of side surfaces, and the plurality of side surfaces expose the outer surface of the battery module. The bracket 10 is provided with a plurality of receiving grooves 11, and the plurality of receiving grooves 11 are provided on at least one side surface. The plurality of side surfaces of the bracket 10 expose the outer surface of the battery module, that is, the plurality of side surfaces of the bracket 10 serve as the outer surface of the battery module, and no additional outer shell is provided.

[0029] Multiple batteries 20 are arranged in a one-to-one correspondence with multiple receiving slots 11, and each battery 20 is accommodated in a corresponding receiving slot 11, and two adjacent batteries 20 are electrically connected through an electrical connector 30. Multiple batteries 20 can be connected in parallel or in series. In this embodiment, multiple batteries 20 are preferably connected in series. Among them, the number of batteries 20 can be two, three, or more than three. Correspondingly, the number of receiving slots 11 can be two, three, or more than three, and one battery 20 is accommodated in a corresponding receiving slot 11.

[0030] The battery module of the present application is provided with a bracket 10 and a plurality of batteries, and a plurality of side surfaces of the bracket 10 are exposed as the outer surface of the battery module. A plurality of receiving grooves 11 are provided on the bracket 10, and a plurality of batteries and a plurality of receiving grooves 11 are provided in a one-to-one correspondence, and each battery is accommodated in a corresponding receiving groove 11, wherein two adjacent batteries are electrically connected via a battery connector. Since a plurality of side surfaces of the bracket 10 are exposed as the outer surface of the battery module, there is no need to provide an additional shell, thereby reducing the overall volume of the battery module and the size of the battery module to meet the use requirements of a smaller space environment.

[0031] The battery module of the embodiment of the present application can be used in scenarios of civil electrical appliances, such as electrical measuring instruments, medical measuring instruments, geological mining, wireless intercoms, wireless microphones, radios, etc., and can be made smaller in size while meeting the basic requirements of the corresponding battery tension.

[0032] In this embodiment, the battery 20 is interference fit with the corresponding receiving groove 11, and the battery 20 can be accommodated and limited in the corresponding receiving groove 11. The interference fit can ensure the stability of the battery 20 assembled in the receiving groove 11, reduce the shaking and looseness of the battery 20 during the use of the battery 20, improve the stability of the battery module, and the assembly structure is simple.

[0033] In other embodiments, the battery 20 may be limited in the receiving groove 11 by providing a limiting structure on the groove wall of the receiving groove 11 .

[0034] In this embodiment, the electrical connector 30 is a strip-shaped electrical connector sheet. In the strip-shaped electrical connector sheet, the strip-shaped design helps to provide a larger contact area, thereby reducing resistance and improving current transmission efficiency, and the sheet-shaped design makes the thickness of the electrical connector 30 thinner, which is conducive to the miniaturization of the overall volume of the battery module.

[0035] In this embodiment, reference Figure 1 , Figure 3 and Figure 4 The bracket 10 includes a first side surface 10a and a second side surface 10b which are arranged opposite to each other along its thickness direction. A plurality of receiving grooves 11 are arranged on the first side surface 10a and / or the second side surface 10b. One end of the receiving groove 11 is an open end. The battery module also includes a hard patch (not shown). The hard patch is mounted on the side of the housing where the receiving groove 11 is arranged, and covers the open end of the receiving groove 11. The sum of the distance between the first side surface 10a and the second side surface 10b and the thickness of the mounted hard patch is equal to the preset standard thickness. Wherein, the thickness direction is as follows: Figure 1 The X direction shown in .

[0036] By utilizing the hard patch combined with the bracket 10 on the first side 10a and / or the second side 10b, the overall thickness of the battery module reaches the corresponding preset standard thickness, thereby reducing the volume of the battery module while making the thickness of the battery module reach the corresponding standard. The use of hard patch mounting and assembly is more automated, with a simple structure and simple assembly.

[0037] Among them, a hard patch is provided to cover the receiving groove 11 , and the battery 20 can also be hidden, reducing the risk of the battery 20 being exposed and damaged, thereby protecting the battery 20 in the receiving groove 11 .

[0038] The material of the hard patch can be one of PET (Polyethylene terephthalate), PP (polypropylene), PC (Polycarbonate) and PVC (Polyvinyl Chloride). One of PET (Polyethylene terephthalate), PP (polypropylene), PC (Polycarbonate) and PVC (Polyvinyl Chloride) can be used to make a patch with a certain hardness, which can allow a certain impact force and protect the battery 120 in the receiving slot 11.

[0039] In a specific implementation, a glue layer may be provided on the mounting surface of the hard patch, and the hard patch is mounted on the side of the housing 110 provided with the receiving groove 11 through the glue layer. Through the glue layer, the hard patch can be fastened and bonded to the side of the housing 110, and the assembly is more efficient and simple, without complicated assembly steps, and after mounting, the appearance of the battery module is flat, which improves the user experience.

[0040] The plurality of receiving grooves 11 may be arranged on the first side surface 10a, or on the second side surface 10b, or the plurality of receiving grooves 11 may be distributed on the first side surface 10a and the second side surface 10b. In this embodiment, the plurality of receiving grooves 11 are preferably distributed on the first side surface 10a and the second side surface 10b, and correspondingly, the first side surface 10a and the second side surface 10b are both mounted with hard patches, and the sum of the distance between the first side surface 10a and the second side surface 10b and the thickness of the two hard patches is equal to the preset standard thickness.

[0041] Among them, the preset standard thickness can be set according to the relevant thickness standards of the battery module. For example, the battery module needs to comply with the IEC battery size standard, and the IEC battery size standard thickness is 15.5-17.5mm. The preset standard thickness can be set to a value in the range of 15.5-17.5mm.

[0042] In this embodiment, the side of the bracket 10 is a plane, and the side on which the receiving groove 11 is provided is recessed inward to form the receiving groove 11. For example, the receiving groove 11 is provided on the first side 10a of the bracket 10, and the first side 10a is recessed inward to form the receiving groove 11. The side of the bracket 10 is set as a plane, and the plane serves as the outer surface of the battery module, so that the outer surface of the battery module is flat, thereby improving the user experience.

[0043] In this embodiment, reference Figure 3 The battery module also includes a positive electrode connector 40 and a negative electrode connector 50, the positive electrode connector 40 is electrically connected to one of the batteries 20, and the negative electrode connector 50 is electrically connected to the other battery 20. The battery module also includes an upper cover 60 that is detachably connected to the bracket 10, and the positive electrode connector 40 and the negative electrode connector 50 are both arranged on the upper cover 60.

[0044] By setting the upper cover 60, the positive electrode connector 40 and the negative electrode connector 50 of the battery module are both set on the upper cover 60, and the upper cover 60 is connected to the bracket 10 in a detachable manner, which facilitates the assembly of the positive electrode connector 40 and the negative electrode connector 50. Among them, since multiple steps before ultrasonic welding require manual assistance, the degree of automation is low. Compared with the existing upper cover 60 through ultrasonic welding, the upper cover 60 in this embodiment is connected to the bracket 10 in a detachable manner, and more assembly can be achieved through automated equipment, which has a higher degree of automation and is more inclined to automation.

[0045] Furthermore, one of the upper cover 60 and the bracket 10 is provided with a buckle 61, and the other is provided with a slot 12, and the buckle 61 is engaged in the slot 12. The upper cover 60 and the bracket 10 are detachably connected through the cooperation of the buckle 61 and the slot 12, with a simple structure, convenient assembly, and a more automated design.

[0046] Among them, the buckle 61 can be set on the upper cover 60 and the slot 12 can be set on the bracket 10, or the buckle 61 can be set on the bracket 10 and the slot 12 can be set on the upper cover 60, both of which can realize the detachable connection between the upper cover 60 and the bracket 10.

[0047] Preferably, in this embodiment, a buckle 61 is provided on the upper cover 60 and a slot 12 is provided on the bracket 10. The upper cover 60 can achieve reliability of connection between the upper cover 60 and the bracket 10 with a smaller thickness and it is easy to hide the details of the connection between the two.

[0048] Furthermore, at least one guide post 62 is disposed on one of the upper cover 60 and the bracket 10 , and at least one guide slot 13 adapted to the guide post 62 is disposed on the other, and each guide post 62 can be adapted to be accommodated in a guide slot 13 .

[0049] By setting the guide column 62 and the guide groove 13, a guiding role can be played during the assembly process of the upper cover 60 and the bracket 10, so that the upper cover 60 and the bracket 10 can be assembled more accurately. At the same time, the coordinated structure of the guide column 62 and the guide groove 13 can provide additional support and stability, making the connection between the upper cover 60 and the bracket 10 more secure.

[0050] The guide column 62 may be provided on the upper cover 60 , and the guide groove 13 may be provided on the bracket 10 , or the guide column 62 may be provided on the bracket 10 , and the guide groove 13 may be provided on the upper cover 60 .

[0051] Preferably, in this embodiment, a guide column 62 is provided on the upper cover 60 and a guide groove 13 is provided on the bracket 10 to facilitate guiding the upper cover 60 to be assembled on the bracket 10, so as to achieve precise alignment and assembly of the upper cover 60 and the bracket 10.

[0052] In this embodiment, reference Figures 1 to 3 A through hole 111 is provided on the bottom wall of the receiving groove 11 to connect the receiving groove 11 with the outside world. One end of the electrical connector 30 passes through the open end of the receiving groove 11 to be electrically connected to one battery 20, and the other end passes through the through hole 111 to be electrically connected to another battery 20.

[0053] Specifically, on the first side 10a and the second side 10b of the bracket 10, there are accommodating grooves 11 or through holes 111 of other accommodating grooves 11. The two batteries 20 are connected by an electrical connector 30 passing through the open end of the accommodating groove 11 and the through hole 111. While achieving electrical connection between the batteries 20, it can also enhance the stability of the battery 20 installed in the accommodating groove 11, and further prevent the battery 20 from falling out of the accommodating groove 11.

[0054] In specific applications, the electrical connector 30 and the corresponding battery 20 are electrically connected by welding.

[0055] In this embodiment, reference Figures 1 to 3, there are seven receiving grooves 11 provided on the bracket 10, among which three receiving grooves 11 are distributed on the first side 10a, and the other four receiving grooves 11 are distributed on the second side 10b. By distributing and arranging seven receiving grooves 11 on the first side 10a and the second side 10b of the bracket 10, seven batteries 20 can be received to form a battery module having seven batteries 20. In specific applications, the formed battery module can be a 9V battery 20, and this type of battery 20 can be applied to civil electrical appliance usage scenarios, such as electrical measurement instruments, medical measuring instruments, geological mining, wireless intercoms, wireless microphones, radios, etc.

[0056] In this embodiment, referring to Figures 1 to 3 , a limiting groove 14 is further provided on the bracket 10. The limiting groove 14 corresponds to and communicates with a receiving groove 11 and a through hole 111, and the electrical connector 30 is adaptively limited in the limiting groove 14.

[0057] By providing the limiting groove 14 to receive and limit the electrical connector 30, the surface of the bracket 10 is made flat.

[0058] In this embodiment, referring to Figure 3 , the battery 20 is provided with a first electrode end 21 and a second electrode end 22. The first electrode end 21 and the second electrode end 22 are respectively arranged on opposite side surfaces of the battery 20. The first electrode end 21 protrudes from the side surface of the battery 20 and is adaptively received in the through hole 111, and the second electrode end 22 is arranged toward the open end of the receiving groove 11.

[0059] By adaptively receiving the first electrode end 21 protruding from the side surface of the battery 20 in the through hole 111, the battery 20 can be limited to a certain extent.

[0060] In specific applications, the first electrode end 21 can be the positive electrode end of the battery 20, and the second electrode end 22 can be the negative electrode end of the battery 20. Or, the first electrode end 21 can be the negative electrode end of the battery 20, and the second electrode end 22 can be the positive electrode end of the battery 20. Preferably, in this embodiment, the first electrode end 21 is the positive electrode end of the battery 20, and the second electrode end 22 is the negative electrode end of the battery 20.

[0061] It should be understood that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. For those skilled in the art, the technical solutions recorded in the above embodiments can be modified, or some of the technical features can be equivalently replaced; and all such modifications and replacements should fall within the protection scope of the appended claims of the present invention.

Claims

1. A battery module, characterized in that: include: A bracket, the bracket comprising a plurality of side surfaces, the plurality of side surfaces being arranged to expose the outer surface of the battery module, the bracket being provided with a plurality of receiving grooves, the plurality of receiving grooves being arranged on at least one of the side surfaces; A plurality of batteries are arranged one by one with the plurality of accommodating slots, each battery is correspondingly contained in one accommodating slot, and two adjacent batteries are electrically connected via an electrical connector.

2. The battery module according to claim 1, characterized in that: The bracket includes a first side surface and a second side surface which are arranged opposite to each other along the thickness direction of the bracket, and a plurality of the receiving grooves are arranged on the first side surface and / or the second side surface, and one end of the receiving groove is an open end. The battery module also includes a hard patch, and the hard patch is mounted on the side surface of the bracket where the receiving groove is provided and covers the open end of the receiving groove. The sum of the distance between the first side surface and the second side surface and the thickness of the mounted hard patch is equal to a preset standard thickness.

3. The battery module according to claim 1 or 2, characterized in that: The battery module also includes a positive electrode connector and a negative electrode connector, the positive electrode connector is electrically connected to one of the batteries, and the negative electrode connector is electrically connected to the other battery. The battery module also includes an upper cover detachably connected to the bracket, and the positive electrode connector and the negative electrode connector are both arranged on the upper cover.

4. The battery module according to claim 3, characterized in that: One of the upper cover and the bracket is provided with a buckle, and the other is provided with a slot, and the buckle is engaged in the slot.

5. The battery module according to claim 4, characterized in that: At least one guide post is disposed on one of the upper cover and the bracket, and at least one guide groove matched with the guide post is disposed on the other, and each guide post can be correspondingly matched and accommodated in one guide groove.

6. The battery module according to claim 1 or 2, characterized in that: The battery is interference-fitted with the corresponding receiving groove.

7. The battery module according to claim 2, characterized in that: A through hole connecting the accommodating groove with the outside is provided on the bottom wall of the accommodating groove. One end of the electrical connector passes through the opening end of the accommodating groove to be electrically connected to one of the batteries, and the other end passes through the through hole to be electrically connected to another of the batteries.

8. The battery module according to claim 7, characterized in that: The battery is provided with a first electrode terminal and a second electrode terminal, the first electrode terminal and the second electrode terminal are respectively arranged on two opposite side surfaces of the battery, the first electrode terminal protrudes from the side surface of the battery and is adapted to be accommodated in the through hole, and the second electrode terminal is arranged toward the opening end of the accommodating groove.

9. The battery module according to claim 7, characterized in that: The bracket is also provided with a limiting groove, the limiting groove correspondingly connects one of the accommodating grooves and one of the through holes, and the electrical connector is adapted to be limited in the limiting groove.

10. The battery module according to claim 1 or 2, characterized in that: The side surface of the bracket is a plane, and the side surface on which the receiving groove is arranged is recessed inwards to form the receiving groove.

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