Battery modules and electric equipment

Abstract

This product provides a battery module that simplifies the assembly process and improves production efficiency and appearance quality. [Solution] A battery module in which a lower case 21 and an upper case 22 are fitted together. The upper and lower walls of both cases are locked together via engaging parts 7 and 8 on the case opening side. A marking area is provided on the outer surface of the case, and positioning ribs 3 or positioning grooves are formed on its outer circumference, and the marking area is covered with a display layer. The card-type locking connection allows for quick assembly without the use of screws or adhesives, improving assembly efficiency. The marking area and positioning structure improve consistency in appearance and label application accuracy.

Description

Technical Field

[0001] This utility model relates to the field of battery modules, and particularly to a kind of battery module and electric equipment.

Background Art

[0002] The application of batteries is becoming more and more extensive. Especially with the application of lithium-ion batteries, the equipment using lithium-ion batteries is also increasing, and the usage environment is becoming more complex and diverse. Lithium-ion battery modules have increasingly strict requirements for appearance and dimensional space during the use process, and the requirements for assembly convenience and production efficiency are also increasing.

Summary of the Invention

Problems to be Solved by the Invention

[0003] One of the purposes of the embodiments of this utility model is to provide a kind of battery module and electric equipment. Applying this technical configuration is beneficial to improving the assembly efficiency of the battery module.

Means for Solving the Problems

[0004] On the first aspect, the battery module provided by the embodiments of this utility model comprises the following. The case includes a lower case and an upper case which are fitted to each other oppositely. The case openings of the upper case and the lower case face each other, the upper surface and the lower surface face each other, and the upper side wall and the lower side wall are locked and connected to each other through an engaging part. Further, a marking area is provided on the outer surface of the case, and a positioning rib protruding from the outer surface and / or a positioning groove recessed into the outer surface is provided on the outer periphery of the marking area. The outer surface of the marking area is covered by a display layer. Also, the battery body is enclosed in the case.

[0005] In one embodiment, an electrode port for connection to the outside is further provided on the upper or lower surface, an electrode terminal tube is provided inside the electrode port, and each of the electrode terminal tubes is electrically connected to an electrode of the battery body.

[0006] In one embodiment, a voltage detection port for voltage detection is further provided on the upper or lower surface, a voltage detection terminal tube is provided inside the voltage detection port, and the voltage detection terminal tube is electrically connected to an electrical node between two predetermined single cells in the battery body.

[0007] In one embodiment, a plurality of protective members are fixed to the inner surface of the lower and / or upper surface, and each of the electrode terminal tubes and voltage detection terminal tubes is further tightly fitted into each of the protective members.

[0008] In one embodiment, each of the electrode terminal tubes and / or voltage detection terminal tubes is a copper tube.

[0009] In one embodiment, a groove is provided on one end face of either the upper wall or the lower wall, and a ridge is provided on the other end face that fits into the groove. When the upper case and the lower case are fitted together, the ridge enters the groove and is positioned, and the end faces of the upper wall and the lower wall on the inside and outside of the ridge and groove come into contact with each other.

[0010] In one embodiment, a plurality of through holes or recesses are provided in either the groove wall or the ridge of the groove, and a protrusion is provided on the other side, and these constitute the engagement portion, and the upper wall and the lower wall are locked and connected to each other via the engagement portion, which means that each of the protrusions fits into each of the through holes or recesses and engages.

[0011] In one embodiment, the case further comprises two label sheets, each of which is attached to the opposite sides of the case, the middle portion of which covers the outer surfaces of the upper and lower walls, the upper edge of which extends from the lower edge of the upper wall and is attached in close contact to the upper surface, and the lower edge of which extends from the lower edge of the lower wall and is attached in close contact to the lower surface.

[0012] In one embodiment, the surface of the positioning rib and / or positioning groove is further provided with a silk screen printing layer.

[0013] As a second aspect, the electric device provided by the embodiment of this utility model comprises the following, wherein the power input terminal of the drive circuit is electrically connected to the electrode terminal of the battery module described in any one of the above items. [Effects of the Invention]

[0014] As can be seen from the above, in this embodiment, multiple engaging parts are installed on the upper wall and multiple engaging parts are installed on the lower wall. When the upper case and the lower case are connected to each other, the engaging parts lock into each other, fixing the upper case and the lower case in place. This eliminates the need for connections using screws or adhesives, which is advantageous in improving the convenience of assembling the battery module and improving the production efficiency of the battery module.

[0015] Furthermore, by employing a case structure in which the upper and lower cases of this embodiment correspond to each other, either of them can be used as a common case. For example, the lower case can be selected as the common case (but is not limited to this), and based on this, a product series of battery module structures can be introduced. By sharing the lower case and combining it with upper cases of different thicknesses, battery modules of different thicknesses can be assembled, and battery module cases of different specifications can be obtained. This configuration leads to an effective reduction in mold costs, and consequently, a reduction in product costs and an improvement in competitiveness. [Brief explanation of the drawing]

[0016] The drawings described herein are provided to enhance the understanding of this utility model, constitute part of this application, and do not unduly limit this utility model.

[0017] Figure 1 is an exploded view of a battery module provided by an embodiment of this utility model. Figure 2 is a three-dimensional diagram of the upper case provided by the embodiment of this utility model. Figure 3 is a three-dimensional diagram of the upper case provided by the embodiment of this utility model. Figure 4 is a three-dimensional diagram of the lower case provided by the embodiment of this utility model. Figure 5 is a three-dimensional diagram of the lower case provided in the embodiment of this utility model. Figure 6 is an assembly diagram of the battery body and lower case provided in the embodiment of this utility model. Figure 7 is a three-dimensional diagram showing the battery body provided by the embodiment of this utility model after it has been housed in a case. Figure 8 is a three-dimensional diagram showing the battery body provided by this utility model after it has been housed in a case. [Modes for carrying out the invention]

[0018] The utility model will be described in detail below with reference to drawings and specific examples. The illustrative examples and explanations of the utility model described herein are for illustrative purposes only and do not limit the utility model.

[0019] Examples of embodiments of the present invention, described in detail below, are shown in the drawings, where the same or similar reference numerals from beginning to end indicate the same or similar elements or elements having the same or similar function.

[0020] The embodiments described below with reference to the drawings of this specification are exemplary and are for the purpose of explaining this utility model, and should not be construed as limiting this utility model. In the description of this utility model, terms such as "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. These are for facilitating the description of this utility model and simplifying the explanation, and do not imply or suggest that the device or element has a specific orientation and is configured and operates in a specific orientation. Therefore, these should not be construed as limitations to this utility model.

[0021] Also, the terms "first" and "second" are used only for the purpose of explanation and should not be understood as suggesting or implying relative importance or implicitly designating the number of such technical features. Thus, the features limited by "first" and "second" shall include one or more of such features explicitly or implicitly. In the description of this utility model, the meaning of "plurality" shall be two or more unless otherwise specified.

[0022] In this utility model, unless there are specific and clear regulations and limitations, terms such as "mounting", "connecting", "connecting", "fixing", etc. should be interpreted in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrally formed. It may be a mechanical connection or an electrical connection, may be directly connected, or may be indirectly connected through an intermediate medium. It may also refer to the communication inside two elements or the interaction relationship between two elements. A person skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific situation.

[0023] Refer to FIGS. 1-8.

[0024] This embodiment provides a kind of battery module, and its main components include a case and a battery body enclosed in the case.

[0025] The battery body is composed of a series connection, a parallel connection, or a combination of series and parallel connections of a plurality of single battery cells 1 (the single battery cell 1 mentioned here is a name used for the battery modules to be composed. The single battery cell 1 may be a battery cell, or may be a battery module composed of a plurality of battery cells). In addition, the electrical connection between each single battery cell 1 may be connected via a circuit board or an interposer board on which a circuit is installed, or may be electrically connected by a conducting wire such as a copper wire, for example. Further, the total positive electrode “+” and the total negative electrode “-” of the battery body are used as discharge output terminals to output current to the outside.

[0026] The case of the present embodiment includes a lower case 21 and an upper case 22 whose openings are fitted to face each other. Further, the upper case 22 includes an upper surface and an upper side wall surrounding the upper surface, and the open case opening faces the upper surface. Further, the lower case 21 includes a lower surface and a lower side wall surrounding the lower surface, and the open case opening faces the lower surface.

[0027] When the case openings of the upper case 22 and the lower case 21 face each other, the upper surface and the lower surface face each other, and the end faces on the case opening sides of the upper side wall and the lower side wall face each other and are connected to form a single sealed case, the battery body is enclosed in the case.

[0028] A plurality of engaging portions are provided on the upper side wall and the lower side wall, respectively. Thereby, when the upper case 22 and the lower case 21 are fitted, the corresponding engaging portions are locked to each other, and the two cases can be fixed and connected without using screws or adhesives. Therefore, the assembly of the battery module is simplified and the production efficiency is improved.

[0029] Furthermore, since the upper case 22 and the lower case 21 according to the present embodiment have corresponding structures to each other, either of them can be used as a common case. For example, by using the lower case 21 as a common case and combining it with a plurality of upper cases 22 having different thicknesses, a series of product series can be constructed. Thereby, the mold cost can be effectively reduced, and the product cost can be reduced and the competitiveness can be improved.

[0030] The outer surface of the case in this embodiment is further provided with a marking area, and the outer surface of the marking area is covered with a display layer. Furthermore, adopting this design is advantageous in enhancing the protection of the case and increasing the visibility and aesthetic appeal of the battery module's external shape. In addition, the outer periphery of the marking area is further provided with positioning ribs 3 (preferably) protruding from the outer surface and / or positioning grooves recessed into the outer surface, which are advantageous for precise positioning of the label, and the protrusion or recess also facilitates the user's gripping and transport of the battery module and increases the rigidity of the case.

[0031] As an example of this embodiment, the marking areas and positioning ribs 3 or positioning grooves described above can be installed on the outer surfaces of the top and / or bottom surfaces. Furthermore, marking areas and positioning ribs 3 or positioning grooves can also be installed on the side walls, so that the marking areas on both sides are continuous with the marking areas on the top and / or bottom surfaces, thereby increasing the overall consistency of the product's external shape and improving the visual impact effect.

[0032] As an example of this embodiment, two label sheets 4 (for example, film sheets, but not limited to these) having good toughness can be used and attached to the opposite sides of the case. The middle portion of each label sheet 4 is attached to the outer surfaces of the upper and lower side walls, the upper edge of the label sheet 4 extends from the top of the upper side wall and is tightly attached to the upper surface, and the lower edge of the label sheet 4 extends from the bottom of the lower side wall and is tightly attached to the lower surface. Furthermore, adopting this design is advantageous in that it further strengthens the tightness and reliability of the connection between the upper case 22 and the lower case 21, on the one hand, and enhances the sense of unity in the external shape of the product and improves the visual effect. In addition, for example, product or manufacturer identification marks, other patterns or colors can be placed on the label sheets 4 (not limited to these) to enhance the aesthetic appearance of the battery's external shape.

[0033] As an example of this embodiment, the appearance of the product can be further improved by performing a silkscreen printing process using pigment on the surface of the positioning ribs 3 and / or positioning grooves on the surface of the case, thereby forming a silkscreen printed layer having color and / or a pattern thereon.

[0034] As an example of this embodiment, the end face of the upper side wall of the upper case 22 at the case opening is further provided with a groove that runs around the side wall, and the end face of the lower side wall of the lower case 21 at the case opening is provided with a ridge whose position and protruding height correspond to the groove. Furthermore, when the case openings of the upper case 22 and the lower case 21 are fitted together, the end faces face each other, the ridge enters the groove, and the ridge and the end faces on the inside and outside of the groove face each other and make contact, so that the upper case 22 and the lower case 21 are tightly fitted and connected, improving the moisture-proof and dustproof capabilities of the cases.

[0035] Furthermore, multiple through holes or recesses 8 (or protrusions) are provided in the groove wall of the groove to serve as engaging parts, and multiple protrusions 7 (or multiple through holes or recesses 8 corresponding to the protrusions 7) are provided on the ridge to serve as engaging parts, so that when the case openings of the upper case 22 and the lower case 21 are fitted together and the ridge enters the groove, each protrusion between them elastically deforms and slides into each through hole or recess 8, thereby achieving locking and positioning.

[0036] As an example of this embodiment, a plurality of additional ports are provided in either the upper case 22 or the lower case 21 of the case, and electrode terminal tubes 11 are installed in two of these ports. For example, copper tubes can be used (but are not limited to this). The two electrode terminal tubes 11 are electrically connected to the total positive electrode "+" and total negative electrode "-" of the battery body via copper wires capable of carrying large currents, and these two copper tubes are connected to external electrical equipment or a charging power source as a discharge port and a charging port.

[0037] As an example of this embodiment, in order to enhance the visibility of the electrodes, identification marks "+" and "-" can be placed on the surface of the case, next to the electrode terminal tube 11. These identification marks may be made of sticker paper, or may be formed by laser silkscreen printing (but are not limited to these), or they may be formed as raised or recessed identification marks during the injection molding process of the upper or lower case.

[0038] Although this embodiment shows an example where the electrode terminal tube 11 is installed in the case, it is not limited to this in practice. In reality, a conductor can be pulled out and a power plug or socket can be connected to the end of the conductor.

[0039] The battery module of this embodiment can be applied to electric model cars, electric racing karts, etc., and the power terminals of the drive circuit of the electric device are electrically connected to the electrode terminals of the battery module of this embodiment.

[0040] Similarly, as an example of this embodiment, the case is further provided for fixing a voltage detection port 24, and a copper tube with a smaller diameter than the electrode terminal tube 11 can be used as the voltage detection terminal tube 12 (but is not limited to this) to save on material costs and facilitate identification. In addition, adding this voltage detection port 24 is advantageous for controlling charging based on the voltage status inside the battery during the charging process, achieving equal charging and avoiding overcharging, thereby enhancing charging safety. Furthermore, for example, the voltage detection port 24 can be installed between the two electrode ports 23 (but is not limited to this).

[0041] As an example of this embodiment, the electrode port 23 and the voltage detection port 24 can be installed at one end of the top surface near the top. Alternatively, one end of the top surface can be installed as a recessed portion 25 lower than the surface level of the top surface (but not limited to this), and the electrode port 23 and the voltage detection port 24 can be installed on this recessed portion 25. Furthermore, adopting this installation makes it easier for the user to insert and remove the battery, and on the other hand, it ensures that the electrode port 23 does not come into contact with the surface when the battery is placed flat, thereby ensuring the electrical safety of the electrode port 23 and improving moisture resistance.

[0042] As an example of this embodiment, a protective member perpendicular to the lower surface is provided on the inner wall of the lower surface of the upper case 22, which will be referred to as the first protective member 26. This member is used to support the copper pipes that are the electrode terminal pipe 11 and the voltage detection terminal pipe 12, and to insulate, protect, and fix them, and to tightly position the lower end of the copper pipe within the enclosure of the first protective member 26.

[0043] The inner wall of the upper surface of the upper case 22 is further provided with multiple protective members perpendicular to the upper surface, which will be referred to as second protective members 27. Each second protective member 27 surrounds the outside of each port, and the upper end of each copper pipe is tightly fitted into each second protective member 27, entering each port from each second protective member 27 and connecting to the outside.

[0044] The embodiments described above do not limit the technical scope of this application. Any modifications, substitutions with equivalents, or improvements based on the above embodiments are included within the technical scope of this application. Reference numerals in the drawings.

[0045] 1: Single cell 11: Electrode terminal tube 12: Terminal tube for voltage detection 21: Lower case 22: Upper case 23: Electrode port 24: Voltage detection port 25: Recessed area 26: First protective member 27: Second protective member 3: Positioning rib 4: Label sheet 5: Groove 6: Ridge 7: Convex part 8: Through hole or recess

Claims

1. It is a battery module, The case and, The case comprises a battery unit enclosed within it. The aforementioned case includes a lower case and an upper case that are fitted together facing each other, The upper case and the lower case each have an upper side wall and a lower side wall, the tips of the upper side wall and the lower side wall face each other to form a case opening, and the upper surface and the lower surface of the upper case and the lower case face each other. The upper wall and the lower wall are locked and connected to each other via an engaging portion. A marking area is provided on the outer surface of the case. The outer circumference of the marking area is provided with positioning ribs protruding from the outer surface and / or positioning grooves recessed into the outer surface. A battery module characterized in that the outer surface of the marking area is covered with a display layer.

2. The upper or lower surface is further provided with electrode ports for connection to the outside, An electrode terminal tube is provided inside the electrode port. The battery module according to claim 1, wherein each electrode terminal tube is electrically connected to an electrode of the battery body.

3. The upper or lower surface is further provided with a voltage detection port for voltage detection. A voltage detection terminal tube is provided inside the voltage detection port. The battery module according to claim 2, wherein the voltage detection terminal tube is electrically connected to an electrical node between two predetermined single cells in the battery body.

4. Multiple protective members are fixed to the inner surfaces of the lower and / or upper surfaces. The battery module according to claim 3, wherein each of the electrode terminal tubes and voltage detection terminal tubes is further tightly fitted within each of the protective members.

5. The battery module according to claim 3 or 4, wherein each of the electrode terminal tubes and / or voltage detection terminal tubes is a copper tube.

6. A groove is provided on one end face of either the upper or lower wall, and a ridge that engages with the groove is provided on the other end face. The battery module according to any one of claims 1 to 5, wherein when the upper case and the lower case are fitted together, the ridge enters the groove and is positioned, and the end faces of the upper and lower walls on the inside and outside of the ridge and groove are in contact with each other.

7. Multiple through holes or recesses are provided on either the groove wall or the ridge of the groove, and a protrusion is provided on the other side, and these constitute the engagement portion. The battery module according to claim 6, wherein the upper wall and the lower wall are locked and connected to each other via the engaging portion, and each of the protrusions is fitted into and engaged with each of the through holes or recesses.

8. It also comes with two more label sheets, Each of the label sheets is attached to the opposite sides of the case. The battery module according to any one of claims 1 to 7, wherein the middle portion of each label sheet covers the outer surfaces of the upper and lower walls, its upper edge extends from the lower edge of the upper wall and is attached in close contact with the upper surface, and its lower edge extends from the lower edge of the lower wall and is attached in close contact with the lower surface.

9. The battery module according to any one of claims 1 to 8, wherein the surface of the positioning rib and / or positioning groove is further provided with a silk screen printing layer.

10. The drive circuit and An electric device characterized in that the power input terminal of the drive circuit is electrically connected to the electrode terminal of the battery module described in any one of claims 1 to 9.

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