Battery pack inner battery connection structure

Abstract

The utility model discloses a battery pack inner battery connecting structure, and the battery pack is by a plurality of battery modules parallel and overlap, and each battery module is by a plurality of battery units side by side combination, and the positive and negative pole of two adjacent battery units all are opposite, and the both ends of each battery unit are equipped with a conducting strip, and the conducting strip electric connection of the same direction end of adjacent battery unit, and the both ends of each battery module are equipped with an insulating sleeve, and the connecting assembly is established between two insulating sleeves. The utility model discloses through setting up two insulating sleeves and fixing the end of a plurality of battery units, and setting up conducting strip in the both ends of each battery unit, and the both ends of each battery unit are opposite and are placed side by side, and the matching connecting assembly is established between two insulating sleeves, can realize the safe and fast series connection of a plurality of battery units together, and the volume is small, and because the middle part of each battery individual is exposed to the outside of two insulating sleeves, the heat dissipation area is larger, and the heat dissipation of battery module is convenient.

Description

Technical Field

[0001] This utility model relates to the field of battery pack technology, and in particular to the battery connection structure within a battery pack. Background Technology

[0002] In some high-power new energy equipment, battery packs formed by connecting multiple batteries in series are typically used as the power source for the circuit. In actual production applications, to avoid external vibrations affecting the stability of battery connections and use, most systems employ an assembly and connection method where each or more batteries are squeezed into a semi-enclosed cavity. While this method effectively secures the batteries within the battery pack and provides relatively stable electrical connections / output, its drawbacks are also obvious: the battery pack is not only inconvenient to disassemble and assemble, but also has poor heat dissipation, posing significant safety hazards. Utility Model Content

[0003] To address the problems existing in the prior art, this utility model provides a battery connection structure within a battery pack, which enables multiple battery units to be safely and quickly connected in series. It is small in size, has a large heat dissipation area, is safer to use, and can connect multiple battery modules in series to form a battery pack as needed, making assembly convenient.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0005] The battery pack includes a battery connection structure comprising one or more battery modules, with several battery modules arranged side-by-side and overlapping along the direction of their internal battery cells. Each battery module has a positive terminal connector at one end and a negative terminal connector at the other end. Each positive terminal connector is electrically connected to the negative terminal connector of another battery module or can serve as the positive output terminal of that battery module. Similarly, each negative terminal connector is electrically connected to the positive terminal connector of another battery module or can serve as the negative output terminal of that battery module.

[0006] Each battery module is composed of several battery cells arranged side by side. One battery cell is connected to the positive electrode connector, and another battery cell is connected to the negative electrode connector. The positive and negative electrodes of two adjacent battery cells are oriented in opposite directions. Each battery cell has a first conductive plate and a second conductive plate at the same oriented end. Except for the conductive plates connected to the positive electrode connector and the negative electrode connector, the first conductive plates or second conductive plates of the other adjacent battery cells are electrically connected.

[0007] All the first conductive sheets on each battery module are embedded in a first insulating sleeve, and all the second conductive sheets are embedded in a second insulating sleeve. The first insulating sleeve and the second insulating sleeve are respectively sleeved on both ends of the battery module and are matched to cover the periphery of one end of each battery cell.

[0008] Each of the battery modules is provided with two or more connecting components, and each of the two ends of the connecting component is respectively connected to a first insulating sleeve and a second insulating sleeve.

[0009] As a further explanation of the above technical solution:

[0010] In the above technical solution, each battery cell is composed of two or more independent battery individuals arranged side by side, and the positive and negative poles of all battery individuals in each battery cell are oriented in the same direction; each of the first conductive sheet and the second conductive sheet is provided with two or more contacts, and each contact abuts against the conductive end of a battery individual.

[0011] In the above technical solution, except for the first conductive sheet / second conductive sheet connected to the positive electrode connector / negative electrode connector, adjacent first conductive sheets and adjacent second conductive sheets can be detachably fixed or integrally formed. In the above technical solution, each first insulating sleeve and second insulating sleeve is provided with a guide portion adapted to the positive electrode connector or negative electrode connector.

[0012] In the above technical solution, each of the connecting components includes a guide rod and a post that match each other and extend in the same direction as the battery cell thereon. The guide rod and the post are respectively disposed on the outer wall of the two insulating sleeves and are detachably fixed to them or integrally formed therewith.

[0013] In the above technical solution, an insulating pad is also provided between two adjacent battery modules.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: by setting two insulating sleeves to fix the ends of multiple battery units, and setting conductive plates at both ends of each battery unit, placing adjacent battery units side by side with opposite polarities, and setting a matching connecting component between the two insulating sleeves, multiple battery units can be safely and quickly connected in series. The size is small, and since the middle of each battery unit is exposed on the outside of the two insulating sleeves, the heat dissipation area is large, which facilitates the heat dissipation of the battery module and makes it safer to use. By setting a guide part on each insulating sleeve of each battery module to guide the positive and negative output terminals of the battery module, it is easy to quickly connect multiple battery modules in series to form a battery pack, and multiple battery modules can be connected in series as needed, making assembly convenient. Attached Figure Description

[0015] Figure 1 This is a structural schematic diagram of this embodiment;

[0016] Figure 2 This is a partially exploded structural diagram of this embodiment;

[0017] Figure 3 This is a schematic diagram of the structure of all the first conductive sheets and second conductive sheets on a battery module in this embodiment;

[0018] Figure 4 This is a schematic diagram of the structure of an insulating sleeve in this embodiment.

[0019] In the diagram: 100, Battery module; 001, Positive output terminal; 002, Negative output terminal; 20, Battery unit; 30, Connecting assembly; 1, Positive connector; 2, Negative connector; 3, First conductive sheet; 4, Second conductive sheet; 5, First insulating sleeve; 6, Second insulating sleeve; 7, Individual battery; 8, Contact; 9, Guide part; 10, Guide rod; 11, Hole post; 12, Insulating gasket; 13, Guide hole groove; 14, Identification structure. Detailed Implementation

[0020] The present invention will now be described in further detail with reference to the accompanying drawings.

[0021] The embodiments described with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application. In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "several" or "more than" means two or more, unless otherwise explicitly specified. In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances. In this application, unless otherwise expressly specified and limited, "above" or "below" a second feature can include direct contact between the first and second features, or it can include contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of a second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" of a second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0022] like Figure 1-2As shown, the battery pack has a battery connection structure. The battery pack consists of one or more battery modules 100, and several battery modules 100 are arranged side-by-side and overlapped along the direction of extension of the internal battery cells 20. Each battery module 100 has a positive terminal connector 1 at one end and a negative terminal connector 2 at the other end. Each positive terminal connector 1 is electrically connected to the negative terminal connector 2 of another battery module 100 or can serve as the positive terminal output 001 of the battery module 100. Each negative terminal connector 2 is electrically connected to the positive terminal connector 1 of another battery module 100 or can serve as the negative terminal output 002 of the battery module 100.

[0023] Each battery module 100 is composed of several battery units 20 arranged side by side. One battery unit 20 is connected to the positive terminal connector 001, and another battery unit 20 is connected to the negative terminal connector 002. The positive and negative terminals of two adjacent battery units 20 are oriented in opposite directions. Each battery unit 20 has a first conductive plate 3 and a second conductive plate 4 at the same oriented end. Except for the conductive plates connected to the positive terminal connector 001 and the negative terminal connector 002, the first conductive plates 3 or the second conductive plates 4 of the other adjacent battery units 20 are electrically connected.

[0024] All first conductive sheets 3 on each battery module 100 are embedded in a first insulating sleeve 5, and all second conductive sheets 4 are embedded in a second insulating sleeve 6. The first insulating sleeve 5 and the second insulating sleeve 6 are respectively sleeved on both ends of a battery module 100 and are matched to cover the periphery of one end of each battery cell 20.

[0025] Each battery module 100 is provided with two or more connecting components 30, and each connecting component 30 is connected to a first insulating sleeve 5 and a second insulating sleeve 6 at both ends.

[0026] like Figure 2-3 As shown, each battery cell 20 is composed of two or more independent battery individuals 7 arranged side by side, and the positive and negative poles of all battery individuals 7 in each battery cell 20 are oriented in the same direction; each first conductive sheet 3 and second conductive sheet 4 is provided with two or more contacts 8, and each contact 8 abuts against the conductive end of a battery individual 7.

[0027] It is understandable that the battery cell 20 formed by multiple battery cells 7 connected in parallel has the same output voltage as each battery cell 7 but has a relatively small resistance and a large current output. This allows the battery module 100 to have a large voltage and current output after multiple battery cells 20 are connected in series, which meets the usage requirements of high-power electrical equipment.

[0028] like Figure 3As shown, except for the first conductive sheet 3 and the second conductive sheet 4 connected to the positive electrode connector 1 / negative electrode connector 2, the two adjacent first conductive sheets 3 and the two adjacent second conductive sheets 4 can be detachably fixed together or integrally formed. In this embodiment, to simplify the assembly process, except for the first conductive sheet 3 connected to the positive electrode connector 1 and the second conductive sheet 4 connected to the negative electrode connector 2, the other two adjacent first conductive sheets 3 and the two adjacent second conductive sheets 4 are integrally formed.

[0029] like Figure 2 As shown, in order to guide and limit the position of the positive electrode connector 1 (positive output terminal 001) and the negative electrode connector 2 (negative output terminal 002) so as to quickly connect multiple battery modules in series, each first insulating sleeve 5 and the second insulating sleeve 6 is provided with a guide portion 9 adapted to the positive electrode connector 1 or the negative electrode connector 2. Each connecting component 30 includes a guide rod 10 and a post 11 that match each other and extend in the same direction as the battery unit 20 on it. The guide rod 10 and the post 11 are respectively provided on the outer wall of the two insulating sleeves and are detachably fixed to them or integrally formed.

[0030] like Figure 2 As shown, in order to avoid short circuits in the battery pack caused by electrical contact between conductive sheets of different polarities on the opposite ends of two adjacent battery modules 100 due to external moisture or foreign objects, an insulating pad 12 is also provided between the two adjacent battery modules 100.

[0031] like Figure 4 As shown in this embodiment, each battery module 100 has a guide hole groove 13 on the first insulating sleeve 5 and the second insulating sleeve 6 that is adapted to one end of each battery individual 7. The end of each guide hole groove 13 is adapted to a first conductive sheet 3 or a second conductive sheet 4. In order to further avoid battery pack short circuits caused by assembly errors, a positive or negative marking structure 14 is provided on the side of each guide hole groove 13.

[0032] This invention secures the ends of multiple battery units 20 with two insulating sleeves, provides conductive plates at both ends of each battery unit 20, places adjacent battery units 20 side by side with opposite polarities, and provides a matching connecting component 30 between the two insulating sleeves. This allows multiple battery units 20 to be safely and quickly connected in series. The design is compact, and because the middle of each battery unit 7 is exposed on the outside of the two insulating sleeves, the heat dissipation area is large, facilitating heat dissipation of the battery module 100 and making it safer to use. By providing a guide part 9 on each insulating sleeve of each battery module 100 to guide the positive output terminal 001 and negative output terminal 002 of the battery module 100, it is easy to quickly connect multiple battery modules 100 in series to form a battery pack. Multiple battery modules 100 can be connected in series as needed, making assembly convenient.

[0033] The above does not limit the technical scope of this utility model. Any modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of this utility model shall still fall within the scope of the technical solution of this utility model.

Claims

1. A battery connection structure within a battery pack, characterized in that, The battery pack comprises one or more battery modules, and several battery modules are arranged side-by-side and overlapped along the direction of their internal battery cells. Each battery module has a positive terminal connector at one end and a negative terminal connector at the other end. Each positive terminal connector is electrically connected to the negative terminal connector of another battery module or can serve as the positive output terminal of that battery module. Each negative terminal connector is electrically connected to the positive terminal connector of another battery module or can serve as the negative output terminal of that battery module. Each battery module is composed of several battery cells arranged side by side. One battery cell is connected to the positive electrode connector, and another battery cell is connected to the negative electrode connector. The positive and negative electrodes of two adjacent battery cells are oriented in opposite directions. Each battery cell has a first conductive plate and a second conductive plate at the same oriented end. Except for the conductive plates connected to the positive electrode connector and the negative electrode connector, the first conductive plates or second conductive plates of the other adjacent battery cells are electrically connected. All the first conductive sheets on each battery module are embedded in a first insulating sleeve, and all the second conductive sheets are embedded in a second insulating sleeve. The first insulating sleeve and the second insulating sleeve are respectively sleeved on both ends of the battery module and are matched to cover the periphery of one end of each battery cell. Each of the battery modules is provided with two or more connecting components, and each of the two ends of the connecting component is respectively connected to a first insulating sleeve and a second insulating sleeve.

2. The battery connection structure within the battery pack according to claim 1, characterized in that, Each battery cell is composed of two or more independent battery individuals arranged side by side, and the positive and negative poles of all battery individuals in each battery cell are oriented in the same direction; each of the first conductive sheet and the second conductive sheet is provided with two or more contacts, and each contact abuts against the conductive end of a battery individual.

3. The battery connection structure within the battery pack according to claim 1, characterized in that, Apart from the first conductive sheet / second conductive sheet connected to the positive electrode connector / negative electrode connector, adjacent first conductive sheets and adjacent second conductive sheets can be detachably fixed or integrally formed.

4. The battery connection structure within the battery pack according to claim 1, characterized in that, Each of the first and second insulating sleeves is provided with a guide portion adapted to the positive or negative electrode connector.

5. The battery connection structure within the battery pack according to claim 1, characterized in that, Each of the connecting components includes a guide rod and a post that match each other and extend in the same direction as the battery cell thereon. The guide rod and the post are respectively disposed on the outer wall of the two insulating sleeves and are detachably fixed to them or integrally formed therewith.

6. The battery connection structure within the battery pack according to any one of claims 1-5, characterized in that, An insulating pad is also provided between two adjacent battery modules.

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