Half-piece assembly without head and tail bus bars

Abstract

The invention discloses a half-piece assembly without head and tail bus bars. The half-piece assembly comprises a battery screen plate and a battery body, wherein the battery mesh plate is of a mesh grid line structure, a plurality of mounting areas are arranged on the battery mesh plate, the battery bodies are adjacently and sequentially arranged on the battery mesh plate, the adjacent battery bodies are electrically connected, and the battery bodies are fixedly connected with the battery mesh plate. After the bus bars at the head and the tail are omitted, the overall size can be reduced by 20 mm, and the production cost is reduced; head and tail bus bars are omitted, so that the use amount of the bus bars is reduced by 60%, and the use cost of the bus bars is reduced by 60%; after head and tail bus bars are cancelled, the module series resistance can be reduced, and the module power is improved; the overall assembly is more compact in design and arrangement, and the assembly conversion efficiency can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of photovoltaic modules, and more particularly to a half-cell module without head and tail bus bars. Background Art

[0002] At present, traditional solar photovoltaic half-cell modules usually have busbars at the head and tail to collect current and transmit it to the junction box. However, this design has some shortcomings. First, the use of busbars increases the cost and weight of the module. Secondly, the welding process of the busbar is relatively complicated, and it is easy to have problems such as poor welding, which affects the reliability and performance of the module. In addition, the existence of the busbar will also take up a certain amount of space, which is not conducive to the miniaturization and lightweight design of the module. At the same time, the busbar position area is only a circuit series effect, collecting current, not generating electricity, affecting the efficiency of the module; secondary problems: the busbar will have resistance, resulting in electrical loss, affecting the efficiency of the module; the busbar involves cost, which affects the cost. Summary of the invention

[0003] In view of this, the present invention provides a half-chip component that eliminates the head and tail bus bars without affecting the component efficiency and with low power loss.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions, including: a battery grid plate and a battery body; wherein the battery grid plate is a mesh grid structure on which a plurality of installation areas are provided, and the battery bodies are adjacently arranged on the battery grid plate in sequence, and the adjacent battery bodies are electrically connected, and the battery bodies and the battery grid plate are fixedly connected.

[0005] Preferably, in the above-mentioned half-cell assembly that eliminates the head and tail bus bars, the first battery body includes a first assembly and a second assembly, wherein the first assembly is provided with a plurality of first connecting wires arranged in a longitudinal array on the front side, and a plurality of second connecting wires arranged in a transverse array on the back side, wherein the first connecting wires are arranged vertically to the second connecting wires, and the second assembly is provided with a plurality of third connecting wires arranged in a transverse array on the front side, and a plurality of fourth connecting wires arranged in a longitudinal array on the back side, wherein the third connecting wires are arranged vertically to the fourth connecting wires; wherein the first connecting wires are connected to the third connecting wires, and the second connecting wires are connected to the fourth connecting wires.

[0006] Preferably, in the above-mentioned half-cell assembly that eliminates the head and tail bus bars, the four sides of the battery grid are respectively provided with a first connection end, a second connection end, a third connection end and a fourth connection end; wherein the first connection end is connected to the first connection line of the battery body, the third connection end is connected to the third connection line of the battery body, the second connection end is connected to the second connection line of the battery body, and the fourth connection end is connected to the fourth connection end of the battery body.

[0007] Preferably, in the above-mentioned half-chip assembly without head and tail bus bars,

[0008] It can be seen from the above technical solution that, compared with the prior art, the present invention discloses a half-chip component that eliminates the head and tail bus bars. By eliminating the head and tail bus bars, the overall size can be reduced by 20 mm, thereby reducing the production cost; by eliminating the head and tail bus bars, the bus bar usage is reduced by 60%, thereby reducing the bus bar usage cost by 60%; after eliminating the head and tail bus bars, the component series resistance can be reduced and the component power can be increased; the overall component design and arrangement is more compact, thereby improving the component conversion efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0010] Figure 1 The accompanying drawing is a schematic diagram of the overall installation structure of the present invention.

[0011] Figure 2 The accompanying drawing is a schematic diagram of the battery body installation structure of the present invention.

[0012] Figure 3 The accompanying drawing is a schematic diagram of the front structure of the first component and the second component of the present invention.

[0013] Figure 4 The attached drawing is a schematic diagram of the back structure of the first component and the second component of the present invention.

[0014] Figure 5 The accompanying drawing is a schematic diagram of the overall circuit structure of the present invention. DETAILED DESCRIPTION

[0015] The specific implementation of the present invention is further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0016] In the description of the present application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0017] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0018] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0019] In order to better understand the purpose, structure and function of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings.

[0020] Please refer to the attached Figure 1-5 , which is a half-chip component disclosed by the present invention that eliminates the head and tail bus bars.

[0021] The present invention comprises: a battery grid plate 1 (the battery grid plate 1 adopts a mesh grid structure to ensure that the battery can transmit current in both the longitudinal and transverse directions), and a battery body 2; wherein the battery grid plate 1 is a mesh grid structure, on which a plurality of installation areas are provided, and the battery bodies 2 are adjacently arranged on the battery grid plate 1 in sequence, and adjacent battery bodies 2 are electrically connected, and the battery bodies 2 and the battery grid plate 1 are fixedly connected.

[0022] In order to further optimize the above technical solution, the first battery body 2 includes a first component 201 and a second component 202, wherein the first component 201 has a plurality of first connecting wires 2011 arranged in a longitudinal array on the front side, and a plurality of second connecting wires 2012 arranged in a transverse array on the back side, wherein the first connecting wires 2011 and the second connecting wires 2012 are arranged vertically, and the second component 202 has a plurality of third connecting wires 2021 arranged in a transverse array on the front side, and a plurality of fourth connecting wires 2022 arranged in a longitudinal array on the back side, wherein the third connecting wires 2021 and the fourth connecting wires 2022 are arranged vertically; wherein the first connecting wires 2011 are connected to the third connecting wires 2021, and the second connecting wires 2012 are connected to the fourth connecting wires 2022.

[0023] In order to further optimize the above technical solution, the four sides of the battery grid plate 1 are respectively provided with a first connection end 101, a second connection end 102, a third connection end 103 and a fourth connection end 104; wherein the first connection end 101 is connected to the first connection line 2011 of the battery body 2, the third connection end 103 is connected to the third connection line 2021 of the battery body 2, the second connection end 102 is connected to the second connection line 2012 of the battery body 2, and the fourth connection end 104 is connected to the fourth connection end 104 of the battery body 2.

[0024] The first component 201 and the second component 202 are connected in series to form four different circuits, and cooperate with the battery grid plate 1 to facilitate the use of multiple circuits and realize current transmission in different horizontal and vertical directions.

[0025] Through the above technical solution, the technical effects produced in this embodiment are:

[0026] 1. After removing the head and tail busbars, the overall size can be reduced by 20mm. The overall length design of the module with a conventional length of 2278mm in the industry can be reduced by 1%, so that the non-silicon cost of the module is reduced by about 1%;

[0027] 2. Eliminate the head and tail bus bars, reduce the bus bar usage by 60%, and reduce the bus bar usage cost by 60%;

[0028] 3. After the head and tail bus bars are removed, the series resistance of the components can be reduced and the power of the components can be increased;

[0029] 4. The overall component design and arrangement are more compact, which can improve the component conversion efficiency;

[0030] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part.

[0031] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A half-chip assembly without head and tail bus bars, characterized in that: include: A battery grid plate and a battery body; wherein the battery grid plate is a mesh grid structure with a plurality of mounting areas provided thereon, the battery bodies are adjacently arranged on the battery grid plate in sequence, the adjacent battery bodies are electrically connected, and the battery bodies and the battery grid plate are fixedly connected.

2. A half-chip assembly without head and tail bus bars according to claim 1, characterized in that: The first battery body includes a first component and a second component, wherein the first component has a plurality of first connecting wires arranged in a longitudinal array on the front side, and a plurality of second connecting wires arranged in a transverse array on the back side, wherein the first connecting wires are arranged vertically to the second connecting wires, and the second component has a plurality of third connecting wires arranged in a transverse array on the front side, and a plurality of fourth connecting wires arranged in a longitudinal array on the back side, wherein the third connecting wires are arranged vertically to the fourth connecting wires; wherein the first connecting wires are connected to the third connecting wires, and the second connecting wires are connected to the fourth connecting wires.

3. A half-chip assembly without head and tail bus bars according to claim 1, characterized in that: The four sides of the battery grid are respectively provided with a first connection end, a second connection end, a third connection end and a fourth connection end; wherein the first connection end is connected to the first connection line of the battery body, the third connection end is connected to the third connection line of the battery body, the second connection end is connected to the second connection line of the battery body, and the fourth connection end is connected to the fourth connection end of the battery body.

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