Battery cell module, battery pack and electric equipment

Abstract

The utility model discloses a battery cell module, a battery pack and electric equipment, and relates to the technical field of batteries. The battery cell module comprises a mounting plate and a plurality of battery cells, a plurality of threaded mounting holes are formed in the mounting plate in the thickness direction in a penetrating manner, threaded connecting parts are arranged on the outer side walls of the plurality of battery cells, and the plurality of battery cells are in threaded fit with the plurality of threaded mounting holes through the threaded connecting parts respectively. According to the battery cell module provided by the utility model, the battery cells can be independently replaced, the maintenance is convenient, and the cost is saved.

Description

Technical Field

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

[0002] At present, the battery cell modules on the market are generally of an integral structure, that is, multiple battery cells are integrated into a whole.

[0003] For this type of battery module, if one of the batteries fails, the entire battery module must be scrapped because the battery cells cannot be replaced individually, resulting in extremely high cost waste. Utility Model Content

[0004] The purpose of the utility model is to provide a battery cell module, which can replace battery cells individually, facilitates maintenance and saves costs.

[0005] Another object of the present invention is to provide a battery pack, which can replace battery cells individually, making maintenance convenient and cost-saving.

[0006] Another object of the present invention is to provide an electrical device that has the characteristics of lower cost and convenient maintenance.

[0007] The embodiment of the present utility model provides a technical solution:

[0008] A battery cell module includes a mounting plate and multiple battery cells. The mounting plate is provided with multiple threaded mounting holes penetrating in the thickness direction. Threaded connection parts are provided on the outer side walls of the multiple battery cells. The multiple battery cells are respectively threadedly engaged with the multiple threaded mounting holes through the threaded connection parts.

[0009] In an optional embodiment, the battery core is cylindrical, the threaded connection portion is located at one end of the battery core in the axial direction, and the length of the threaded connection portion is between 1 / 3 and 1 / 2 of the length of the battery core, and / or,

[0010] The length of the threaded mounting hole is greater than or equal to the length of the threaded connection portion.

[0011] In an optional embodiment, the battery cell is provided with a first electrode terminal at one axial end, and the first electrode terminals of the plurality of battery cells are located at the same end of the module, and the battery cell is provided with a second electrode terminal at the other axial end, and the second electrode terminals of the plurality of battery cells are located at the same end of the module;

[0012] The battery cell module further includes a first current collector and a second current collector. A plurality of the first electrode terminals are connected to the first current collector, and a plurality of the second electrode terminals are connected to the second current collector.

[0013] In an optional embodiment, a plurality of elastic abutting members are provided on the first collector body, and the plurality of first electrode terminals abut against the plurality of elastic abutting members accordingly.

[0014] In an optional embodiment, an insulating isolation layer is provided between the first body conduit and the mounting plate.

[0015] In an optional embodiment, a plurality of safety connectors are detachably provided on the second body collector, and the second body collector is connected to the plurality of second electrode terminals respectively through the plurality of safety connectors.

[0016] In an optional embodiment, a protruding pin is provided on the surface of the second conduit body, a matching hole is provided on the safety connector, and the protruding pin is embedded in the matching hole and transitionally matched with the matching hole.

[0017] In an optional embodiment, an auxiliary bracket is vertically provided on a side of the mounting plate facing away from the first conduit body, and the second conduit body is disposed on the auxiliary bracket.

[0018] An embodiment of the present invention also provides a battery pack, including the aforementioned battery cell module, wherein the battery cell module includes a mounting plate and a plurality of battery cells, wherein the mounting plate is provided with a plurality of threaded mounting holes penetrating in the thickness direction, and a threaded connection portion is provided on the outer side walls of the plurality of battery cells, and the plurality of battery cells are respectively threadedly engaged with the plurality of threaded mounting holes through the threaded connection portions.

[0019] An embodiment of the present invention also provides an electrical device, including the aforementioned battery pack, the battery pack including a battery cell module, the battery cell module including a mounting plate and a plurality of battery cells, the mounting plate being provided with a plurality of threaded mounting holes penetrating in the thickness direction, the outer side walls of the plurality of battery cells being provided with threaded connection parts, the plurality of battery cells being threadedly engaged with the plurality of threaded mounting holes respectively through the threaded connection parts.

[0020] Compared to the existing technology, the battery cell module provided by the present invention has a mounting plate provided with multiple threaded mounting holes, and the outer walls of the multiple battery cells are provided with threaded connecting portions. The threaded connecting portions cooperate with the threads of the threaded mounting holes to achieve detachable mounting of the multiple battery cells on the mounting plate. The battery cell module provided by the present invention has the following advantages: the battery cells can be replaced individually, which facilitates maintenance and saves costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] To more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and should not be considered as limiting the scope of the present invention. Those skilled in the art can also derive other relevant drawings based on these drawings without inventive effort.

[0022] Figure 1 A schematic structural diagram of a battery cell module provided by an embodiment of the present utility model at a first viewing angle;

[0023] Figure 2 A schematic structural diagram of a battery cell module provided by an embodiment of the present utility model at a second viewing angle;

[0024] Figure 3 A schematic diagram of the exploded structure of the battery module provided in an embodiment of the present utility model;

[0025] Figure 4 for Figure 1 Schematic diagram of the structure of the battery cell from a third-person perspective;

[0026] Figure 5 for Figure 1 Schematic diagram of the structure of the battery cell from the fourth perspective;

[0027] Figure 6 for Figure 1 Schematic diagram of the structure of the first confluence body;

[0028] Figure 7 for Figure 1 A magnified schematic diagram of area A in the middle.

[0029] Icons: 100-battery cell module; 110-mounting plate; 111-threaded mounting hole; 112-auxiliary bracket; 120-battery cell; 121-threaded connection part; 122-first electrode terminal; 123-second electrode terminal; 130-first collector; 131-elastic abutment; 140-second collector; 141-safety connector; 142-protruding pin. DETAILED DESCRIPTION

[0030] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more apparent, the technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings of the embodiments of the present invention. It should be understood that the described embodiments are only a portion of the embodiments of the present invention, not all of them. Generally, the components of the embodiments of the present invention described and illustrated in the drawings herein may be arranged and designed in a variety of different configurations.

[0031] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are also within the scope of protection of the present invention.

[0032] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0033] In the description of the present utility model, it should be understood that the terms "upper", "lower", "inside", "outside", "left", "right", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, or are directions or positional relationships in which the utility model product is usually placed when in use, or are directions or positional relationships commonly understood by those skilled in the art. These directions or positional relationships are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present utility model.

[0034] Furthermore, the terms “first”, “second”, etc. are merely used for distinguishing descriptions and should not be understood as indicating or implying relative importance.

[0035] It should also be noted that, in the description of this utility model, unless otherwise expressly specified or limited, terms such as "disposed" and "connected" should be understood in a broad sense. For example, "connected" can mean 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 an indirect connection through an intermediate medium, or it can be the internal communication between two components. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0036] The specific implementation of the present invention is described in detail below with reference to the accompanying drawings.

[0037] Example

[0038] Please refer to Figure 1 、 Figure 2 and Figure 3 , Figure 1 FIG. 1 is a schematic structural diagram of the battery cell module 100 provided in this embodiment at a first viewing angle. Figure 2 FIG. 1 is a schematic structural diagram of the battery cell module 100 provided in this embodiment at a second viewing angle. Figure 3 FIG. 1 is a schematic diagram of the exploded structure of the battery cell module 100 .

[0039] The battery cell module 100 provided in this embodiment includes a mounting plate 110 and a plurality of battery cells 120. The mounting plate 110 is provided with a plurality of threaded mounting holes 111, each threaded mounting hole 111 penetrating the mounting plate 110 in the thickness direction. Threaded connection portions 121 are provided on the outer side walls of the plurality of battery cells 120, and the plurality of battery cells 120 are threadedly engaged with the plurality of threaded mounting holes 111 through the threaded connection portions 121.

[0040] It is understood that when assembling the battery cell module 100 provided in this embodiment, the multiple battery cells 120 are screwed into the multiple threaded mounting holes 111 respectively to complete the installation of the multiple battery cells 120 on the mounting plate 110. When any battery cell 120 needs to be replaced, it only needs to be screwed out of the corresponding threaded mounting hole 111. This operation is convenient and quick, and the installation structure of the remaining battery cells 120 is not affected.

[0041] Therefore, the battery cell module 100 provided in this embodiment has a quick and easy assembly and disassembly process, and any battery cell 120 can be replaced, which facilitates maintenance and saves costs.

[0042] Mounting plate 110 serves as a medium connecting multiple battery cells 120 into a single module, primarily providing secure support. Therefore, it should be constructed from a material that is strong, lightweight, and provides good heat dissipation. Furthermore, the space between adjacent threaded mounting holes 111 on mounting plate 110 should be minimized to maximize energy density while ensuring adequate mounting strength.

[0043] Furthermore, in another embodiment, to further enhance the heat dissipation effect of the battery cells 120, thermal conductive adhesive may be poured into the gaps between the battery cells 120. After the thermal conductive adhesive is poured, it can enhance the buffering effect and fixation, and also achieve better heat dissipation effect.

[0044] In practice, mounting plate 110 can be installed within the battery pack using bolts. The number of threaded mounting holes 111 on mounting plate 110 can be adjusted based on the actual application, as can the number of battery cells 120 mounted on mounting plate 110. Furthermore, the shape of mounting plate 110 can be adapted to the shape of the battery pack while ensuring the required number of battery cells 120 is met, facilitating assembly.

[0045] In this embodiment, the battery cell 120 is cylindrical, and the threaded connection portion 121 is located at one axial end of the battery cell 120. The steel shell of the battery cell 120 can be thickened to a thickness that allows for the threaded structure to be machined, thereby directly machining the threaded connection portion 121 on the outer wall of the steel shell. Alternatively, the threaded connection portion 121 can be machined onto the outer surface of a tube of corresponding size, which can then be fitted over the outer surface of the battery cell 120 and welded to the steel shell of the battery cell 120.

[0046] It is understood that when selecting a tubing material for processing, the tubing should have good thermal conductivity. Furthermore, to ensure heat dissipation of the battery cell 120, the threaded connection portion 121 should not occupy too much of the axial dimension of the battery cell 120. Preferably, in this embodiment, the length of the threaded connection portion 121 is between 1 / 3 and 1 / 2 of the length of the battery cell 120. It is understood that the length of the threaded connection portion 121 is the axial dimension of the threaded connection portion 121 in the battery cell 120.

[0047] Please refer to Figure 4 and Figure 5 , Figure 4 FIG. 1 is a schematic structural diagram of the battery cell 120 at a third viewing angle. Figure 5 FIG. 1 is a schematic structural diagram of the battery cell 120 at a fourth viewing angle.

[0048] In this embodiment, a first electrode terminal 122 is provided at one axial end of the battery cell 120, and the first electrode terminals 122 of the multiple battery cells 120 are located at the same end of the module, and a second electrode terminal 123 is provided at the other axial end of the battery cell 120, and the second electrode terminals 123 of the multiple battery cells 120 are located at the same end of the module.

[0049] It is understood that the battery cell 120 is electrically connected to the outside through the first electrode terminal 122 and the second electrode terminal 123. The polarity of the first electrode terminal 122 and the second electrode terminal 123 are opposite. If the first electrode terminal 122 is a positive terminal, the second electrode terminal 123 is a negative terminal. Conversely, if the first electrode terminal 122 is a negative terminal, the second electrode terminal 123 is a positive terminal.

[0050] In order to facilitate the adjustment of the electrode terminals at the same end of the battery cell 120 to the same horizontal plane, the thickness of the mounting plate 110 in this embodiment is greater than the length of the threaded connection part 121. In other words, the length of the threaded mounting hole 111 is greater than or equal to the length of the threaded connection part 121.

[0051] Furthermore, to enable the multiple battery cells 120 in the battery cell module 100 to form a single circuit, the battery cell module 100 provided in this embodiment further includes a first busbar 130 and a second busbar 140. Multiple first electrode terminals 122 are connected to the first busbar 130, and multiple second electrode terminals 123 are connected to the second busbar 140. This means that the multiple battery cells 120 are connected in parallel between the first busbar 130 and the second busbar 140, and the battery cell module 100 is electrically connected to the outside world via the first busbar 130 and the second busbar 140.

[0052] Please refer to Figure 6 and Figure 7 , Figure 6FIG. 1 is a schematic structural diagram of the first confluence body 130. Figure 7 Shown Figure 1 A magnified schematic diagram of area A in the middle.

[0053] In order to achieve reliable electrical connection with the first electrode terminals 122 of the plurality of battery cells 120 , in this embodiment, a plurality of elastic abutting members 131 are provided on the first busbar 130 , and the plurality of first electrode terminals 122 abut against the plurality of elastic abutting members 131 accordingly.

[0054] It can be understood that due to the constraint of the threaded fit between the threaded connection part 121 and the threaded mounting hole 111, the axial movement of the battery cell 120 relative to the mounting plate 110 is restricted, ensuring the tight abutment between the first electrode terminal 122 and the elastic abutment 131 on the first collector body 130, thereby achieving a stable and reliable electrical connection.

[0055] Specifically, the first fluid collector 130 is generally located on one side of the mounting plate 110, and the multiple elastic abutment members 131 arranged on the first fluid collector 130 correspond to the corresponding ends of the multiple threaded mounting holes 111 on the mounting plate 110, and the threaded connection part 121 and the first electrode terminal 122 are at the same end of the battery cell 120.

[0056] When the threaded connection portion 121 of the battery cell 120 is gradually screwed into the threaded mounting hole 111 , the first electrode terminal 122 of the battery cell 120 gradually approaches the corresponding elastic abutment 131 until the elastic abutment 131 is elastically deformed, thereby achieving close abutment between the two.

[0057] In order to prevent a short circuit fault, in this embodiment, an insulating isolation layer is provided between the first collector body 130 and the mounting plate 110 .

[0058] The second collector body 140 is generally located on the other side of the mounting plate 110 . A plurality of safety connectors 141 are detachably provided on the second collector body 140 . The second collector body 140 is connected to the plurality of second electrode terminals 123 through the plurality of safety connectors 141 .

[0059] In this embodiment, the safety connector 141 is fixed to the corresponding second electrode terminal 123 by laser welding. It is understood that the safety connector 141 is made of a material that can melt when the current is overloaded. When the current of the battery cell 120 increases abnormally, the safety connector 141 melts, thereby disconnecting the corresponding battery cell 120 and providing protection.

[0060] It can be understood that after the fuse connector 141 is blown, it can be removed from the second busbar 140. After the fault of abnormal current increase is eliminated, a new fuse connector 141 is installed to the corresponding position on the second busbar 140 and connected to the second electrode terminal 123 of the corresponding battery cell 120 again, and the corresponding battery cell 120 can be reconnected to the circuit.

[0061] Regarding the detachable connection structure between the safety connector 141 and the second manifold body 140, in this embodiment, a protruding pin 142 is provided on the surface of the second manifold body 140. The safety connector 141 has a mating hole, into which the protruding pin 142 engages and fits seamlessly. In other embodiments, other detachable connection methods can be used between the safety connector 141 and the second manifold body 140 depending on the actual application conditions.

[0062] It can be understood that since the parts of the side walls of the battery cell 120 except the threaded connection part 121 are all protruding from the surface of the mounting plate 110 and have a certain height, in order to facilitate the installation and fixation of the second fluid collector 140, in this embodiment, an auxiliary bracket 112 is erected on the side of the mounting plate 110 away from the first fluid collector 130, and the second fluid collector 140 is arranged on the auxiliary bracket 112.

[0063] In summary, the battery cell module 100 provided in this embodiment has a plurality of threaded mounting holes 111 provided on its mounting plate 110, and a threaded connection portion 121 provided on the outer wall of the plurality of battery cells 120. The threaded connection portion 121 cooperates with the threaded mounting holes 111 to realize the detachable installation of the plurality of battery cells 120 on the mounting plate 110.

[0064] Therefore, the battery cell module 100 provided by the present invention can replace the battery cells 120 individually, which is convenient for maintenance and saves costs.

[0065] This embodiment further provides a battery pack, which includes the aforementioned battery cell module 100. The number of battery cell modules 100 can be one or more. Benefiting from the beneficial effects of the battery cell module 100, the battery pack provided by this embodiment also has the characteristics of convenient maintenance and lower cost.

[0066] In addition, this embodiment also provides an electrical device, which is equipped with the aforementioned battery pack. Benefiting from the beneficial effects of the battery pack, the electrical device provided by this embodiment also has the characteristics of convenient maintenance and lower cost.

[0067] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A battery cell module, characterized in that: The invention comprises a mounting plate (110) and a plurality of battery cells (120), wherein the mounting plate (110) is provided with a plurality of threaded mounting holes (111) penetrating in the thickness direction, and threaded connection parts (121) are provided on the outer side walls of the plurality of battery cells (120), and the plurality of battery cells (120) are respectively threadedly engaged with the plurality of threaded mounting holes (111) through the threaded connection parts (121).

2. The battery cell module according to claim 1, characterized in that: The battery core is cylindrical, the threaded connection portion (121) is located at one end of the battery core (120) in the axial direction, and the length of the threaded connection portion (121) is between 1 / 3 and 1 / 2 of the length of the battery core (120), and / or, The length of the threaded mounting hole (111) is greater than or equal to the length of the threaded connection portion (121).

3. The battery cell module according to claim 2, characterized in that: The battery cell (120) is provided with a first electrode terminal (122) at one end in the axial direction, and the first electrode terminals (122) of the plurality of battery cells are located at the same end of the module; the battery cell (120) is provided with a second electrode terminal (123) at the other end in the axial direction, and the second electrode terminals (123) of the plurality of battery cells are located at the same end of the module; The battery cell module (100) further comprises a first collector body (130) and a second collector body (140), a plurality of the first electrode terminals (122) are connected to the first collector body (130), and a plurality of the second electrode terminals (123) are connected to the second collector body (140).

4. The battery cell module according to claim 3, characterized in that: The battery cell module (100) further comprises a first collector body (130), a plurality of elastic abutting members (131) being provided on the first collector body (130), and a plurality of the first electrode terminals (122) correspondingly abutting against the plurality of elastic abutting members (131).

5. The battery cell module according to claim 4, characterized in that: An insulating isolation layer is provided between the first concentrator (130) and the mounting plate (110).

6. The battery cell module according to claim 3, characterized in that: The second collector body (140) is detachably provided with a plurality of safety connectors (141), and the second collector body (140) is respectively connected to a plurality of second electrode terminals (123) via the plurality of safety connectors (141).

7. The battery cell module according to claim 6, characterized in that: A convex pin (142) is protruded from the surface of the second confluence body (140), a matching hole is opened on the safety connecting piece (141), and the convex pin (142) is embedded in the matching hole and transitionally matched with the matching hole.

8. The battery cell module according to claim 6, characterized in that: An auxiliary bracket (112) is vertically provided on a side of the mounting plate (110) facing away from the first confluence body (130), and the second confluence body (140) is arranged on the auxiliary bracket (112).

9. A battery pack, characterized in that: It comprises the battery cell module (100) according to any one of claims 1 to 8.

10. An electrical device, characterized in that: Comprising the battery pack as claimed in claim 9.

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