Cylindrical battery module and battery pack

Abstract

The embodiment of the utility model provides a cylindrical battery module and a battery pack, and relates to the technical field of batteries. The cylindrical battery module can be suitable for a battery pack, the cylindrical battery module comprises a heating plate, a first cylindrical battery and a second cylindrical battery, the heating plate is provided with a first side face and a second side face which are opposite, the bottom of the first cylindrical battery is arranged on the first side face, and the bottom of the second cylindrical battery is arranged on the second side face. Due to the fact that the two opposite sides of the heating plate can heat the cylindrical batteries, namely the first cylindrical batteries and the second cylindrical batteries which are distributed on the two opposite sides of the heating plate can share the same heating plate, the number of the used heating plates in the battery pack is reduced, the number of cylindrical battery modules is also reduced, and the cost of the battery pack is reduced.

Description

Technical Field

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

[0002] The battery pack of the prior art has a large number of cylindrical battery modules, and each cylindrical battery module requires a heating component to heat the cylindrical batteries in the cylindrical battery module. Therefore, many heating components are required in the battery pack, resulting in high cost of the battery pack. Utility Model Content

[0003] The utility model provides a cylindrical battery module and a battery pack, which can reduce the cost of the battery pack.

[0004] The embodiments of the present invention can be implemented as follows:

[0005] In a first aspect, the utility model provides a cylindrical battery module, comprising:

[0006] a heating plate having a first side and a second side facing away from each other;

[0007] a first cylindrical battery, wherein the bottom of the first cylindrical battery is disposed on the first side surface; and

[0008] A second cylindrical battery, wherein the bottom of the second cylindrical battery is arranged on the second side surface.

[0009] In an optional embodiment, the cylindrical battery module further includes a first battery frame, the first battery frame is provided with a first limiting hole, and the first cylindrical battery fits into the first limiting hole.

[0010] In an optional embodiment, the first battery frame is provided with a second limiting hole, the second limiting hole and the first limiting hole are spaced apart, and the first cylindrical battery is simultaneously matched with the first limiting hole and the second limiting hole.

[0011] In an optional embodiment, the first limiting hole and the second limiting hole are both round holes.

[0012] In an optional embodiment, the axis of the first limiting hole and the axis of the second limiting hole are collinear;

[0013] Wherein, the first side surface is a plane, and the axis of the first limiting hole is perpendicular to the first side surface.

[0014] In an optional embodiment, the number of the first limiting holes, the second limiting holes and the first cylindrical batteries are all multiple, and the multiple first limiting holes, the multiple second limiting holes and the multiple first cylindrical batteries correspond one to one.

[0015] In an optional embodiment, the cylindrical battery module further includes a second battery frame, the second battery frame is provided with a third limiting hole, and the second cylindrical battery is matched with the third limiting hole;

[0016] Wherein, the first battery frame and the second battery frame are respectively arranged on the first side surface and the second side surface.

[0017] In an optional embodiment, the cylindrical battery module further includes a connector, which simultaneously connects the first battery frame and the second battery frame.

[0018] In an optional embodiment, the heating plate includes a first plate body, a second plate body and a third plate body connected in sequence, the second plate body having the first side surface and the second side surface opposite to each other, wherein the first plate body and the third plate body are spaced apart and parallel, and the first plate body and the second plate body are connected at a right angle.

[0019] In a second aspect, the utility model provides a battery pack, comprising at least one cylindrical battery module as described in any one of the aforementioned embodiments, wherein the first cylindrical battery and the second cylindrical battery are both in a horizontal state.

[0020] The cylindrical battery module and battery pack of the present utility model have the following beneficial effects, for example:

[0021] The utility model provides a cylindrical battery module, which can be suitable for a battery pack. The cylindrical battery module comprises a heating plate, a first cylindrical battery and a second cylindrical battery. The heating plate has a first side surface and a second side surface opposite to each other. The bottom of the first cylindrical battery is arranged on the first side surface, and the bottom of the second cylindrical battery is arranged on the second side surface. Since the two opposite sides (the first side surface and the second side surface) of the heating plate can heat the cylindrical batteries, that is, the first cylindrical battery and the second cylindrical battery distributed on the two opposite sides of the heating plate can share the same heating plate, thereby reducing the number of heating plates used in the battery pack, reducing the number of cylindrical battery modules, and reducing the cost of the battery pack.

[0022] The utility model provides a battery pack, which includes at least one cylindrical battery module as mentioned above, wherein the first cylindrical battery and the second cylindrical battery are both in a horizontal state, and the battery pack has all the functions of the cylindrical battery module as mentioned above. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 A schematic diagram of a cylindrical battery module provided in an embodiment of the present utility model;

[0025] Figure 2 An exploded view of a cylindrical battery module provided in an embodiment of the present utility model;

[0026] Figure 3 It is a schematic diagram of a heating plate provided in an embodiment of the utility model.

[0027] Icon: 100-heating plate; 110-first plate body; 120-second plate body; 121-first side; 130-third plate body; 200-first cylindrical battery; 300-second cylindrical battery; 400-first battery frame; 401-first limiting hole; 402-second limiting hole; 500-second battery frame; 501-third limiting hole; 502-fourth limiting hole; 600-connecting piece. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0029] 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 present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] 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, further definition and explanation thereof is not required in subsequent drawings.

[0031] In the description of the present utility model, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the accompanying drawings, or is the orientation or position relationship in which the utility model product is usually placed when used. It is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present utility model.

[0032] In addition, the terms “first”, “second”, etc., if used, are merely used to distinguish between the descriptions and should not be understood as indicating or implying relative importance.

[0033] It should be noted that, in the absence of conflict, the features in the embodiments of the present invention may be combined with each other.

[0034] As mentioned in the background technology, the battery pack of the prior art has a large number of cylindrical battery modules, and each cylindrical battery module requires a heating component to heat the cylindrical batteries in the cylindrical battery module. Therefore, many heating components are required in the battery pack, resulting in high cost of the battery pack.

[0035] In view of this, please refer to Figure 1-Figure 3 The cylindrical battery module and battery pack provided in the embodiments of the present invention can solve this problem, which will be described in detail below.

[0036] The utility model provides a battery pack, which includes at least one cylindrical battery module. In the present embodiment, the number of the cylindrical battery modules may be multiple, and in some embodiments, the battery pack may also contain one cylindrical battery module.

[0037] Among them, the first cylindrical battery 200 and the second cylindrical battery 300 in the cylindrical battery module are both in a horizontal state. The horizontal state here can be understood as that when the battery pack is placed normally, the axis of the first cylindrical battery 200 and the axis of the second cylindrical battery 300 are in a horizontal state.

[0038] The utility model provides a cylindrical battery module, which can be applied to a battery pack. The cylindrical battery module includes a heating plate 100, a first cylindrical battery 200 and a second cylindrical battery 300. The heating plate 100 has a function of heating the first cylindrical battery 200 and the second cylindrical battery 300. For example, the heating plate 100 has a heating wire, and the heating plate 100 has a first side surface 121 and a second side surface opposite to each other. The bottom of the first cylindrical battery 200 is arranged on the first side surface 121, and the bottom of the second cylindrical battery 300 is arranged on the second side surface.

[0039] Since both opposite sides of the heating plate 100 (the first side 121 and the second side) can heat the cylindrical batteries, that is, the first cylindrical batteries 200 and the second cylindrical batteries 300 distributed on the opposite sides of the heating plate 100 can share the same heating plate 100, the number of heating plates 100 used in the battery pack is reduced, the number of cylindrical battery modules is reduced, and the cost of the battery pack is reduced.

[0040] For the convenience of description, in the present application, the first cylindrical battery 200 and the second cylindrical battery 300 may be collectively referred to as cylindrical batteries.

[0041] That is to say, since both opposite sides of the heating plate 100 (the first side 121 and the second side) can heat the cylindrical batteries, the cylindrical battery module in this embodiment can have more cylindrical cells, reducing the number of cylindrical battery modules in the battery pack and reducing the cost of the battery pack.

[0042] In order to improve the structural strength of the cylindrical battery module, in the present embodiment, the cylindrical battery module further includes a first battery frame 400 , the first battery frame 400 is provided with a first limiting hole 401 , and the first cylindrical battery 200 is matched with the first limiting hole 401 .

[0043] Among them, the first battery frame 400 is also provided with a second limiting hole 402, the first limiting hole 401 and the second limiting hole 402 are both round holes, the second limiting hole 402 and the first limiting hole 401 are spaced apart, and the first cylindrical battery 200 is simultaneously matched with the first limiting hole 401 and the second limiting hole 402, that is, the first cylindrical battery 200 is simultaneously passed through the first limiting hole 401 and the second limiting hole 402 to achieve the fixation of the first cylindrical battery 200.

[0044] At the same time, the axis of the first limiting hole 401 and the axis of the second limiting hole 402 are collinear, wherein the first side surface 121 is a plane, and the axis of the first limiting hole 401 is perpendicular to the first side surface 121 .

[0045] In this embodiment, the number of the first limiting holes 401, the second limiting holes 402 and the first cylindrical batteries 200 are all multiple, and the multiple first limiting holes 401, the multiple second limiting holes 402 and the multiple first cylindrical batteries 200 correspond one to one, that is, the first battery frame 400 can install multiple first cylindrical batteries 200, and at the same time has a certain protective effect on the first cylindrical batteries 200, thereby improving the structural strength of the entire cylindrical battery module.

[0046] Specifically, two rows of first cylindrical batteries 200 are distributed on the first side surface 121 , with ten first cylindrical batteries 200 in each row.

[0047] In addition, the cylindrical battery module also includes a second battery frame 500. In the present embodiment, the structure of the second battery frame 500 is the same as that of the first battery frame 400, wherein the first battery frame 400 and the second battery frame 500 are respectively arranged on the first side surface 121 and the second side surface, and a plurality of second cylindrical batteries 300 are also distributed on the second side surface.

[0048] Specifically, the second battery frame 500 is provided with a plurality of third limiting holes 501 and a plurality of fourth limiting holes 502. The plurality of third limiting holes 501, the plurality of fourth limiting holes 502 and the plurality of second cylindrical batteries 300 correspond one to one. The second cylindrical batteries 300 are simultaneously matched with the third limiting holes 501 and the fourth limiting holes 502, that is, the second cylindrical batteries 300 are simultaneously passed through the third limiting holes 501 and the fourth limiting holes 502 to fix the second cylindrical batteries 300.

[0049] Two rows of second cylindrical batteries 300 are distributed on the second side surface, with ten second cylindrical batteries 300 in each row. In addition, it should be noted that in this embodiment, the first battery frame 400 and the second battery frame 500 are both plastic frames.

[0050] In addition, in the present embodiment, the cylindrical battery module further includes two connectors 600 , each of which is connected to the first battery frame 400 and the second battery frame 500 at the same time. The connectors 600 here can be understood as sheet metal parts.

[0051] The entire cylindrical battery module can be installed in the battery pack by passing a fastener (such as a long stainless steel screw) through the connector 600 and connecting it to the battery pack housing.

[0052] In order to improve the structural strength of the entire cylindrical battery module, the heating plate 100 includes a first plate body 110, a second plate body 120 and a third plate body 130 connected in sequence, and the second plate body 120 has a first side surface 121 and a second side surface opposite to each other, wherein the first plate body 110 and the third plate body 130 are spaced apart and parallel, and the first plate body 110 and the second plate body 120 are connected at a right angle, for example, the second plate body 120 has a heating wire.

[0053] That is to say, the first cylindrical battery 200 and the second cylindrical battery 300 are placed back to back, and the heating plate 100 has an I-shaped plate structure, which can enhance the structural strength of the cylindrical battery module and reduce the possibility of deformation of the cylindrical battery module. For example, when the first plate 110 of the heating plate 100 is subjected to force, the heating plate 100 increases the overall rigidity of the cylindrical battery module, ensuring that the mechanical structure strength of the cylindrical battery module is stable and reliable when the vehicle is in relatively harsh working conditions, and improving the vibration resistance of the cylindrical battery module, thereby increasing the safety and reliability of the product.

[0054] In summary, the cylindrical battery module can be suitable for a battery pack. The cylindrical battery module includes a heating plate 100, a first cylindrical battery 200 and a second cylindrical battery 300. The heating plate 100 has a first side surface 121 and a second side surface opposite to each other. The bottom of the first cylindrical battery 200 is arranged on the first side surface 121, and the bottom of the second cylindrical battery 300 is arranged on the second side surface.

[0055] Since both opposite sides of the heating plate 100 can heat the cylindrical batteries, that is, the first cylindrical battery 200 and the second cylindrical battery 300 distributed on the opposite sides of the heating plate 100 can share the same heating plate 100, the number of heating plates 100 used in the battery pack is reduced, the number of cylindrical battery modules is reduced, and the cost of the battery pack is reduced.

[0056] In other words, the first cylindrical battery 200 and the second cylindrical battery 300 are placed back to back, and the heating plate 100 with an I-shaped plate structure is used to fix the first cylindrical battery 200 and the second cylindrical battery 300 and to heat the bottom of the first cylindrical battery 200 and the bottom of the second cylindrical battery 300, thereby increasing the rigidity of the cylindrical battery module in the battery system and meeting and improving the mechanical performance requirements and safety of the product.

[0057] The battery pack includes at least one of the above cylindrical battery modules, wherein the first cylindrical battery 200 and the second cylindrical battery 300 are both in a horizontal state, and the battery pack has all the functions of the above cylindrical battery module.

[0058] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the utility model should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A cylindrical battery module, characterized in that: include: A heating plate (100), the heating plate (100) having a first side surface (121) and a second side surface opposite to each other; a first cylindrical battery (200), wherein the bottom of the first cylindrical battery (200) is arranged on the first side surface (121); and A second cylindrical battery (300), wherein the bottom of the second cylindrical battery (300) is arranged on the second side surface.

2. The cylindrical battery module according to claim 1, characterized in that: The cylindrical battery module further comprises a first battery frame (400), the first battery frame (400) being provided with a first limiting hole (401), and the first cylindrical battery (200) being matched with the first limiting hole (401).

3. The cylindrical battery module according to claim 2, characterized in that: The first battery frame (400) is also provided with a second limiting hole (402), the second limiting hole (402) and the first limiting hole (401) are spaced apart, and the first cylindrical battery (200) is simultaneously matched with the first limiting hole (401) and the second limiting hole (402).

4. The cylindrical battery module according to claim 3, characterized in that: The first limiting hole (401) and the second limiting hole (402) are both circular holes.

5. The cylindrical battery module according to claim 4, characterized in that: The axis of the first limiting hole (401) and the axis of the second limiting hole (402) are collinear; Wherein, the first side surface (121) is a plane, and the axis of the first limiting hole (401) is perpendicular to the first side surface (121).

6. The cylindrical battery module according to claim 3, characterized in that: The number of the first limiting holes (401), the second limiting holes (402) and the first cylindrical batteries (200) are all multiple, and the multiple first limiting holes (401), the multiple second limiting holes (402) and the multiple first cylindrical batteries (200) correspond one to one.

7. The cylindrical battery module according to claim 2, characterized in that: The cylindrical battery module further comprises a second battery frame (500), the second battery frame (500) being provided with a third limiting hole (501), and the second cylindrical battery (300) being matched with the third limiting hole (501); Wherein, the first battery frame (400) and the second battery frame (500) are respectively arranged on the first side surface (121) and the second side surface.

8. The cylindrical battery module according to claim 7, characterized in that: The cylindrical battery module further comprises a connecting member (600), wherein the connecting member (600) simultaneously connects the first battery frame (400) and the second battery frame (500).

9. The cylindrical battery module according to claim 1, characterized in that: The heating plate (100) comprises a first plate body (110), a second plate body (120) and a third plate body (130) which are connected in sequence, wherein the second plate body (120) has the first side surface (121) and the second side surface which are opposite to each other, wherein the first plate body (110) and the third plate body (130) are spaced apart and parallel, and the first plate body (110) and the second plate body (120) are connected at a right angle.

10. A battery pack, characterized in that: Comprising at least one cylindrical battery module according to any one of claims 1 to 9, wherein the first cylindrical battery (200) and the second cylindrical battery (300) are both in a horizontal state.

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