Battery pack and power device

Abstract

The utility model discloses a battery pack and a power device, and the battery pack comprises a frame which is provided with an accommodating cavity; the battery module is arranged in the accommodating cavity; the first heat insulation assembly is arranged on the outer side of the frame; and the second heat insulation assembly is arranged on the outer side of the battery module. According to the battery pack disclosed by the utility model, the first heat insulation assembly is arranged on the outer side of the frame, and the second heat insulation assembly is arranged on the outer side of the battery module, so that the temperature difference of the battery pack during working is relatively small, the temperature balance in the battery pack is ensured, and the possibility of thermal runaway is reduced; and safety risk and performance degradation caused by overheating of the battery pack are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of battery manufacturing, in particular to a battery pack and a power device. Background Art

[0002] The relevant technology points out that the main purpose of designing the thermal insulation scheme of the power battery system is to ensure that the internal temperature of the battery is maintained within the appropriate working range under various working conditions, such as charging, discharging, or when affected by the external ambient temperature, to avoid safety risks and performance degradation caused by overheating. There will be a large temperature difference when the power battery system is working. If there is no reasonable thermal insulation design, the temperature balance in the battery pack cannot be guaranteed, which is easy to cause thermal runaway. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides a battery pack with a simple internal structure and ingenious design, which can keep the internal temperature within a suitable working range.

[0004] The utility model also provides a power device having the battery pack.

[0005] The battery pack according to the first aspect of the utility model includes: a frame, the frame forming a accommodating cavity; a battery module, the battery module is arranged in the accommodating cavity; a first thermal insulation component, the first thermal insulation component is arranged on the outside of the frame; and a second thermal insulation component, the second thermal insulation component is arranged on the outside of the battery module.

[0006] According to the battery pack of the utility model, by disposing a first thermal insulation component on the outside of the frame and a second thermal insulation component on the outside of the battery module, the temperature difference of the battery pack during operation is small, the temperature balance inside the battery pack is ensured, the possibility of thermal runaway is reduced, and the safety risks and performance degradation caused by overheating of the battery pack are avoided.

[0007] In some embodiments, the frame includes a front side beam, a rear side beam and a right side beam, and the first heat insulation assembly includes: a first heat insulation board, which extends along the length direction of the right side beam and is arranged on the outer side of the right side beam; a second heat insulation board, which is respectively arranged on the outer sides of the front side beam and the rear side beam.

[0008] In some embodiments, the first heat insulation board includes a first plate body, a second plate body, and a third plate body connected in sequence, and the first plate body and the third plate body are vertically connected to both sides of the second plate body in the width direction.

[0009] In some embodiments, the second heat insulation board is formed with an avoidance groove and a plurality of connection holes, and the plurality of connection holes all penetrate the second heat insulation board in the thickness direction of the second heat insulation board, and the second heat insulation board is respectively connected to the front side beam and the rear side beam by fasteners passing through the connection holes.

[0010] In some embodiments, the battery pack further includes: a lower box body, and the first thermal insulation component and the second thermal insulation component are both connected to the lower box body.

[0011] In some embodiments, the second thermal insulation assembly includes a first thermal insulation sheet and a second thermal insulation sheet, the battery module has a side plate, the first thermal insulation sheet is arranged on one side of the battery module in the width direction and connected to the side plate, and the second thermal insulation sheet is arranged on the other side of the battery module in the width direction and connected to the side plate.

[0012] In some embodiments, the first heat insulation sheet and the second heat insulation sheet are connected to the side plate via adhesives.

[0013] In some embodiments, the battery pack further includes: a thermal insulation pad disposed between the battery module and the lower box.

[0014] In some embodiments, the first thermal insulation component is formed as an aluminum plate and a silica-glass fiber composite material piece, and / or the second thermal insulation component is formed as a ceramic silicone rubber piece.

[0015] The power device according to the second aspect of the utility model comprises the battery pack according to the first aspect of the utility model.

[0016] According to the power device of the utility model, by providing the battery pack of the first aspect mentioned above, the overall performance of the power device is improved, the safety performance of the power device is enhanced, the possibility of thermal runaway is reduced, and the safety risk and performance degradation of the power device caused by overheating of the battery pack are avoided.

[0017] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic diagram of a battery pack according to an embodiment of the utility model;

[0019] Figure 2 yes Figure 1 A schematic diagram of another perspective of the battery pack shown in ;

[0020] Figure 3 It is a schematic diagram of the battery module;

[0021] Figure 4 It is the assembly diagram of the thermal insulation pad.

[0022] Reference numerals:

[0023] 100. Battery pack;

[0024] 1. Frame; 11. Front side beam; 12. Rear side beam; 13. Right side beam; 14. Mounting beam;

[0025] 2. Battery module; 21. Side panel;

[0026] 3. First heat insulation board; 4. Second heat insulation board; 41. Avoidance groove;

[0027] 5. First thermal insulation sheet; 6. Second thermal insulation sheet; 7. Thermal insulation pad. DETAILED DESCRIPTION

[0028] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0029] Reference below Figure 1-Figure 4 A battery pack 100 according to an embodiment of the first aspect of the present invention is described.

[0030] like Figure 1 As shown, the battery pack 100 according to the first embodiment of the utility model includes: a frame 1, a battery module 2, a first thermal insulation component and a second thermal insulation component.

[0031] Specifically, the frame 1 is formed with a receiving cavity, the battery module 2 is arranged in the receiving cavity, the first heat insulation component is arranged outside the frame 1, and the second heat insulation component is arranged outside the battery module 2. In other words, the first heat insulation component is located outside the receiving cavity, and the second heat insulation component is located inside the receiving cavity and outside the battery module 2. As a result, the internal structure of the battery pack 100 is simple and the design is ingenious, which can keep the internal temperature within a suitable working range.

[0032] According to the battery pack 100 of the embodiment of the utility model, a first thermal insulation component is arranged on the outside of the frame 1, and a second thermal insulation component is arranged on the outside of the battery module 2, so that the temperature difference of the battery pack 100 during operation is small, thereby ensuring the temperature balance inside the battery pack 100, reducing the possibility of thermal runaway, and avoiding safety risks and performance degradation caused by overheating of the battery pack 100.

[0033] In some embodiments of the present invention, the frame 1 includes a front side beam 11, a rear side beam 12 and a right side beam 13, and the first heat insulation assembly includes: a first heat insulation board 3, which extends along the length direction of the right side beam 13 and is arranged on the outer side of the right side beam 13; a second heat insulation board 4, which is respectively arranged on the outer sides of the front side beam 11 and the rear side beam 12. Figure 1 As shown, the second heat insulation board 4 includes two, and a second heat insulation board 4 is provided on the outer side of the front side beam 11 and the outer side of the rear side beam 12. Therefore, the arrangement of the first heat insulation component is ingenious, and heat insulation can be performed well.

[0034] In some embodiments of the utility model, the first heat insulation board 3 includes a first plate body, a second plate body and a third plate body connected in sequence, and the first plate body and the third plate body are vertically connected to both sides of the width direction of the second plate body. That is to say, the first plate body and the third plate body extend in the up-down direction, the second plate body extends in the front-back direction, the first plate body is connected to the right side of the second plate body, and the third plate body is connected to the left side of the second plate body. As a result, the structure of the first heat insulation board 3 is simple, and the structural strength of the first heat insulation board 3 is improved while ensuring the heat insulation effect.

[0035] In some embodiments of the utility model, the second heat insulation board 4 is formed with an avoidance groove 41 and a plurality of connection holes, and the plurality of connection holes all penetrate the second heat insulation board 4 in the thickness direction of the second heat insulation board 4, and the second heat insulation board 4 is respectively connected to the front side beam 11 and the rear side beam 12 through fasteners passing through the connection holes. Thus, the connection stability between the second heat insulation board 4 and the frame 1 is improved, and the second heat insulation board 4 is prevented from falling off and causing failure during transportation or use.

[0036] In some embodiments of the present invention, the battery pack 100 further includes: a lower box, and the first insulation component and the second insulation component are both connected to the lower box. Thus, the connection stability of the first insulation component and the second insulation component is further improved, the overall structural integrity of the battery pack 100 is ensured, and the connection method is simple.

[0037] In some embodiments of the present invention, the second heat insulation assembly includes a first heat insulation sheet 5 and a second heat insulation sheet 6, the battery module 2 has a side plate 21, the first heat insulation sheet 5 is arranged on one side of the battery module 2 in the width direction and connected to the side plate 21, and the second heat insulation sheet 6 is arranged on the other side of the battery module 2 in the width direction and connected to the side plate 21. Figure 3 As shown, the first heat insulating sheet 5 is arranged on the left side of the battery module 2, and the second heat insulating sheet 6 is arranged on the right side of the battery module 2. Therefore, the second heat insulating assembly is cleverly designed and has a simple connection structure.

[0038] Preferably, the first thermal insulation sheet 5 and the second thermal insulation sheet 6 are connected to the side plate 21 by adhesives, which reduces the production difficulty and cost, can directly control the temperature emitted by the battery module 2, ensure the temperature balance inside the battery pack 100, and thus reduce the safety risks caused by overheating.

[0039] In some embodiments of the utility model, the battery pack 100 further includes: a thermal insulation pad 7, which is disposed between the battery module 2 and the lower box. As shown in the figure, the thermal insulation pad 7 is disposed at the position of the mounting hole of the frame 1 and is fixed to the frame 1 with an adhesive. Preferably, the thermal insulation pad 7 is made of EPGC (epoxy glass cloth laminate) material. Thus, the thermal insulation pad 7 added to the mounting point of the battery module 2 can prevent the end plate of the battery module 2 from directly contacting the mounting beam 14, thereby isolating the conduction of temperature.

[0040] Preferably, the first thermal insulation component is formed as an aluminum plate and a silica glass fiber composite material part. Specifically, the inner layer is silica glass fiber, which is bonded to the outer surface of the side beam of the battery pack 100 to ensure the thermal insulation effect. The outer layer is a single-layer aluminum plate, which is used to protect the inner layer of silica glass fiber and ensure the stability of the rigid connection. The second thermal insulation component is formed as a ceramic silicone rubber part.

[0041] The power device according to the embodiment of the second aspect of the utility model includes the battery pack 100 according to the embodiment of the first aspect of the utility model.

[0042] According to the power device of the embodiment of the utility model, by setting the battery pack 100 of the first embodiment, the overall performance of the power device is improved, the safety performance of the power device is enhanced, the possibility of thermal runaway is reduced, and the safety risks and performance degradation of the power device caused by overheating of the battery pack 100 are avoided.

[0043] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element 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 invention.

[0044] In addition, 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. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0045] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like 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, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0046] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0047] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A battery pack, characterized in that: include: A frame, wherein the frame is formed with a receiving cavity; A battery module, wherein the battery module is disposed in the accommodating cavity; A first heat insulation component, wherein the first heat insulation component is arranged outside the frame; A second thermal insulation component is arranged on the outside of the battery module.

2. The battery pack according to claim 1, characterized in that: The frame includes a front side beam, a rear side beam and a right side beam, and the first heat insulation assembly includes: A first heat insulation board, the first heat insulation board extends along the length direction of the right beam and is arranged on the outer side of the right beam; The second heat insulation board is respectively arranged on the outer sides of the front side beam and the rear side beam.

3. The battery pack according to claim 2, characterized in that: The first heat insulation board includes a first plate body, a second plate body and a third plate body which are connected in sequence, and the first plate body and the third plate body are vertically connected to both sides of the second plate body in a width direction.

4. The battery pack according to claim 3, characterized in that: The second heat insulation board is formed with an avoidance groove and a plurality of connection holes, and the plurality of connection holes all penetrate the second heat insulation board in the thickness direction of the second heat insulation board. The second heat insulation board is respectively connected to the front side beam and the rear side beam by fasteners passing through the connection holes.

5. The battery pack according to claim 1, characterized in that: Also includes: A lower box body, wherein the first heat insulation component and the second heat insulation component are both connected to the lower box body.

6. The battery pack according to claim 1, characterized in that: The second thermal insulation assembly includes a first thermal insulation sheet and a second thermal insulation sheet. The battery module has a side plate. The first thermal insulation sheet is arranged on one side of the battery module in the width direction and is connected to the side plate. The second thermal insulation sheet is arranged on the other side of the battery module in the width direction and is connected to the side plate.

7. The battery pack according to claim 6, characterized in that: The first heat insulation sheet and the second heat insulation sheet are connected to the side plate via adhesive members.

8. The battery pack according to claim 5, characterized in that: Also includes: A thermal insulation pad is arranged between the battery module and the lower box.

9. The battery pack according to any one of claims 1 to 8, characterized in that: The first thermal insulation component includes an aluminum plate and silica glass fiber, the silica glass fiber is bonded to the side beam of the battery pack, the aluminum plate is arranged on the side of the silica glass fiber away from the side beam of the battery pack, and / or the second thermal insulation component is formed as a ceramic silicone rubber part.

10. A power device, characterized in that: A battery pack comprising any one of claims 1-9.

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