Battery pack

Abstract

The utility model provides a battery pack. The battery pack comprises: a housing assembly having an accommodating cavity; the at least one battery pack is arranged in the accommodating cavity; each battery pack is correspondingly provided with at least one power generation assembly, or each power generation assembly is correspondingly arranged with at least one battery pack, each power generation assembly comprises a cold end part and a hot end part which are connected with each other, and one end, far away from the cold end part, of the hot end part is an output end; and the heat dissipation assembly is arranged on the shell assembly corresponding to the cold end part. According to the utility model, the problem of resource waste caused by charging the sensor in the battery pack by the battery management system in the prior art is solved.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, and more specifically, to a battery pack. Background Technology

[0002] With the development of the battery industry and the increasing sophistication of relevant regulations, the requirements for battery pack safety and the accuracy of operational information sampling are gradually increasing. To meet this demand, there are generally two technical approaches: one is to improve sensor accuracy and storage capacity, and the other is to increase the number and types of sensors. However, since the cost of improving sensor accuracy often exceeds the cost of adding more sensors, the current industry practice is to add various sensors to the battery pack to improve sampling performance. However, due to differences in function, sensors may have different specifications and rated power. If all sensors are powered by the Battery Management System (BMS), it will significantly increase the BMS's output power regulation requirements, resulting in resource waste. Therefore, how to solve the power supply problem for low-power sensors is one of the urgent issues to be addressed in the industry.

[0003] Therefore, existing technologies suffer from resource waste due to the battery management system charging the sensors within the battery pack. Utility Model Content

[0004] The main objective of this invention is to provide a battery pack that solves the problem of resource waste caused by the battery management system charging the sensors inside the battery pack in the prior art.

[0005] To achieve the above objectives, according to one aspect of the present invention, a battery pack is provided, comprising: a housing assembly having a receiving cavity; at least one battery pack disposed within the receiving cavity; at least one power generation component, wherein each battery pack is provided with at least one power generation component, or each power generation component is provided with at least one battery pack, the power generation component comprising a cold end portion and a hot end portion connected to each other, and the end of the hot end portion away from the cold end portion being the output end; and a heat dissipation component disposed on the housing assembly corresponding to the cold end portion.

[0006] Furthermore, the hot end portion includes at least two power generation cell bodies, which are disposed on the outer surface of the battery pack, with one end of the power generation cell body connected to the cold end portion and the other end of the power generation cell body serving as the output end.

[0007] Furthermore, the two main bodies of the power generation cells are respectively mounted on two side walls along the length of the same battery pack.

[0008] Furthermore, the two main bodies of the power generation cells are parallel to each other.

[0009] Furthermore, thermally conductive adhesive is provided between the main body of the power generation unit and the battery pack.

[0010] Furthermore, the cold end portion has multiple heat dissipation fins, and the cold end portion is spaced apart from the battery pack.

[0011] Furthermore, the number of battery packs is equal to and corresponds one-to-one with the number of power generation components, and the cold end of all power generation components is located at the same end of the battery pack.

[0012] Furthermore, the housing assembly has an air inlet and an air outlet communicating with the receiving cavity. Both the air inlet and the air outlet are provided corresponding to the cold end portion, and the heat dissipation component is provided in the air inlet.

[0013] Furthermore, the air vents are equipped with louvers.

[0014] Furthermore, the battery pack also includes an energy storage unit, and the output terminal is electrically connected to the energy storage unit.

[0015] Applying the technical solution of this utility model, the battery pack in this application includes a housing assembly, at least one battery pack, at least one power generation component, and a heat dissipation component. The housing assembly has a receiving cavity; the battery pack is disposed within the receiving cavity; each battery pack is correspondingly provided with at least one power generation component, or each power generation component is correspondingly provided with at least one battery pack, the power generation component includes a cold end portion and a hot end portion connected to each other, and the end of the hot end portion away from the cold end portion is the output end; the heat dissipation component is disposed on the housing assembly corresponding to the cold end portion.

[0016] When using the battery pack of this application, since a power generation component is installed inside the battery pack's housing assembly, and this component has a cold end and a hot end, the power generation component can directly convert heat energy into electrical energy under the Seebeck effect to generate electricity and provide power to the sensor through the output terminal. Therefore, compared with the prior art of using a battery management system to power the sensor, this application can effectively reduce resource waste. Simultaneously, the hot end portion of this application can also absorb heat from the battery pack, thus the battery pack can effectively improve the cooling performance of the battery pack, thereby improving its overall performance. Furthermore, the heat dissipation component installed on the housing assembly not only effectively cools the battery pack, but also, because the heat dissipation component is positioned corresponding to the cold end portion, it ensures a temperature difference between the cold and hot ends, thereby guaranteeing the stable operation of the power generation component. Therefore, the battery pack of this application effectively solves the problem of resource waste caused by the prior art of charging the sensor inside the battery pack through a battery management system. Attached Figure Description

[0017] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0018] Figure 1 A schematic diagram of the structure of a battery pack according to a specific embodiment of the present invention is shown;

[0019] Figure 2 It shows Figure 1 A schematic diagram of the internal structure of the battery pack in the diagram;

[0020] Figure 3 It shows Figure 1 A schematic diagram showing the positional relationship between the battery pack and the power generation components in the battery pack.

[0021] Figure 4 It shows Figure 1 A schematic diagram of the power generation components of the battery pack.

[0022] The above figures include the following reference numerals:

[0023] 10. Housing assembly; 11. Receiving cavity; 12. Air inlet; 13. Air outlet; 131. Louver; 20. Battery pack; 30. Power generation assembly; 31. Cold end section; 311. Heat dissipation fins; 32. Hot end section; 321. Power generation unit body; 33. Output end; 40. Heat dissipation assembly. Detailed Implementation

[0024] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0025] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0026] In this utility model, unless otherwise stated, directional terms such as "upper," "lower," "top," and "bottom" are generally used in relation to the direction shown in the accompanying drawings, or in relation to the vertical, perpendicular, or gravitational direction of the component itself; similarly, for ease of understanding and description, "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0027] To address the problem of resource waste caused by the charging of sensors within the battery pack by the battery management system in the prior art, this application provides a battery pack.

[0028] like Figures 1 to 4As shown, the battery pack in this application includes a housing assembly 10, at least one battery pack 20, at least one power generation component 30, and a heat dissipation component 40. The housing assembly 10 has a receiving cavity 11; the battery pack 20 is disposed within the receiving cavity 11; each battery pack 20 is correspondingly provided with at least one power generation component 30, or each power generation component 30 is correspondingly provided with at least one battery pack 20, the power generation component 30 includes a cold end portion 31 and a hot end portion 32 connected to each other, and the end of the hot end portion 32 away from the cold end portion 31 is the output terminal 33; the heat dissipation component 40 is disposed on the housing assembly 10 corresponding to the cold end portion 31.

[0029] When using the battery pack of this application, since the battery pack housing assembly 10 contains a power generation component 30, and the power generation component 30 has a cold end portion 31 and a hot end portion 32, the power generation component 30 can directly convert heat energy into electrical energy under the Seebeck effect to generate electricity, and provide power to the sensor through the output terminal 33. Therefore, compared with the prior art of using a battery management system to power the sensor, this application can effectively reduce resource waste. At the same time, the hot end portion 32 in this application can also absorb the heat of the battery pack 20, so the battery pack of this application can also effectively improve the cooling performance of the battery pack 20, thereby improving the performance of the battery pack. Furthermore, the heat dissipation component 40 provided on the housing assembly 10 can not only effectively cool the battery pack 20, but also, since the heat dissipation component 40 is provided corresponding to the cold end portion 31, it can ensure that there is a temperature difference between the cold end portion 31 and the hot end portion 32, thereby ensuring the stable operation of the power generation component 30. Therefore, the battery pack of this application effectively solves the problem of resource waste caused by the battery management system charging the sensor in the battery pack in the prior art.

[0030] Furthermore, in this application, the power generation component 30 can be a semiconductor power generation structure. That is to say, in this application, during the process of converting heat energy into electrical energy by the power generation component 30, the battery pack does not need to move mechanical parts. It only needs a certain temperature difference between the cold end portion 31 and the hot end portion 32 of the semiconductor PN junction to generate electricity. It has the advantages of simple structure and no noise.

[0031] In one specific embodiment of this application, such as Figures 2 to 4As shown, the power generation component 30 is a semiconductor power generation structure, and the hot end portion 32 of the semiconductor power generation structure includes at least two power generation chip bodies 321. The power generation chip bodies 321 are disposed on the outer surface of the battery pack 20, and one end of the power generation chip body 321 is connected to the cold end portion 31, while the other end of the power generation chip body 321 is the output terminal 33. The cold end portion 31 of the semiconductor power generation structure has multiple heat dissipation fins 311, and the cold end portion 31 is spaced apart from the battery pack 20. By setting the heat dissipation fins 311, the heat dissipation effect of the cold end portion 31 can be effectively guaranteed, thereby ensuring that a stable temperature difference exists between the cold end portion 31 and the hot end portion 32, and thus ensuring the stable operation of the power generation component 30.

[0032] Preferably, such as Figure 2 As shown, the two power generation units 321 are respectively disposed on two side walls along the length of the same battery pack 20. This arrangement ensures that the power generation units 321 absorb heat from the battery pack 20 more evenly, and also ensures that the temperature difference between different positions within the same battery pack 20 is smaller, thereby guaranteeing the performance of the battery pack 20.

[0033] Optionally, such as Figure 4 As shown, the two main bodies 321 of the power generation cells are parallel to each other. Of course, the arrangement of the main bodies 321 of the power generation cells in this application can be adapted to the actual use.

[0034] Optionally, thermally conductive adhesive is provided between the generator body 321 and the battery pack 20. This arrangement can effectively improve the thermal conductivity between the generator body 321 and the battery pack 20.

[0035] Furthermore, regarding the quantity and correspondence of battery packs 20 and power generation components 30 within the battery pack, two power generation plate bodies 321 of the same power generation component 30 can contact the surfaces of different battery packs 20 and absorb heat from different battery packs 20 to generate electricity. Alternatively, two power generation plate bodies 321 of the same power generation component 30 can contact the surface of the same battery pack 20 and absorb heat from the corresponding battery pack 20 to generate electricity. Of course, the same battery pack 20 can also contact the power generation plate bodies 321 of multiple power generation components 30. The specific arrangement can be adjusted according to actual use and design requirements.

[0036] In one specific embodiment of this application, the number of battery packs 20 is equal to and corresponds one-to-one with the number of power generation components 30, and the cold end portion 31 of all power generation components 30 is located at the same end of the battery pack 20. This arrangement not only effectively utilizes the heat of each battery pack 20 but also ensures effective cooling of each battery pack 20, keeping the temperature of each battery pack 20 similar and avoiding large temperature differences between different battery packs 20, thereby guaranteeing the performance of the battery pack.

[0037] Specifically, the housing assembly 10 has an air inlet 12 and an air outlet 13 communicating with the receiving cavity 11. Both the air inlet 12 and the air outlet 13 are positioned corresponding to the cold end portion 31, and a heat dissipation assembly 40 is disposed at the air inlet 12. In one specific embodiment of this application, the housing assembly 10 includes a housing body and a housing top cover. The housing top cover is disposed on the housing body and forms the receiving cavity 11 with the housing body. Meanwhile, the bottom surface of the housing body has an air outlet 13 communicating with the receiving cavity 11, while the housing top cover has an air inlet 12.

[0038] Preferably, such as Figure 1 As shown, the heat dissipation assembly 40 includes multiple sets of fans. These multiple sets of fans can be configured to correspond to the cold end portions 31 of multiple power generation components 30. By configuring the fans, the air intake effect of the air inlet 12 can be improved, allowing the battery pack to circulate air within the housing 11 and the outside environment through the interaction of the air inlet 12, air outlet 13, and fans. Alternatively, in this application, a liquid cooling structure can be configured to regulate the temperature of the battery pack 20, thereby achieving a combination of air cooling and liquid cooling to cool the battery pack 20 within the battery pack, ensuring that the battery pack 20 remains within a suitable operating temperature range. Simultaneously, the liquid cooling structure can also heat the battery pack 20 in extremely cold operating environments. Furthermore, when the liquid cooling structure is located on the bottom surface of the housing assembly 10, the battery pack 20 can be fixed to the bottom surface of the housing assembly 10 using thermally conductive adhesive.

[0039] Optionally, the vent 13 is provided with louvers 131. By providing louvers 131, the airflow effect between the housing cavity 11 and the outside can be adaptively adjusted, thereby ensuring more flexible air conditioning between the battery pack and the outside.

[0040] Preferably, the battery pack further includes an energy storage unit, and the output terminal 33 is electrically connected to the energy storage unit. In a specific embodiment of this application, the energy storage unit is a battery. That is, in this embodiment, the semiconductor power generation structure does not directly power the sensor. Since the electricity generated by the semiconductor power generation is affected by the temperature difference between the cold end portion 31 and the hot end portion 32, the output power may be unstable. Therefore, in environments with high output power requirements, it is advisable to add a battery to the output terminal 33, connect the output terminal 33 to the battery for energy storage, and then let the battery provide constant power to power-consuming components such as the sensor. Therefore, by setting an energy storage unit in this application, the operation of the sensor can be made more stable.

[0041] As can be seen from the above description, the embodiments of this utility model achieve the following technical effects:

[0042] 1. Effectively solves the problem of resource waste caused by the battery management system charging the sensors in the battery pack in the existing technology;

[0043] 2. Simple structure and stable performance.

[0044] Obviously, the embodiments described above are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0045] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0046] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0047] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A battery pack, characterized in that, include: A housing assembly (10) having a receiving cavity (11); At least one battery pack (20) is disposed within the receiving cavity (11); At least one power generation component (30), each of the battery packs (20) is provided with at least one power generation component (30), or each of the power generation components (30) is provided with at least one of the battery packs (20), the power generation component (30) includes a cold end portion (31) and a hot end portion (32) connected to each other, and the end of the hot end portion (32) away from the cold end portion (31) is the output end (33); A heat dissipation assembly (40) is disposed on the housing assembly (10) corresponding to the cold end portion (31).

2. The battery pack according to claim 1, characterized in that, The hot end portion (32) includes at least two power generation sheet bodies (321), which are disposed on the outer surface of the battery pack (20). One end of the power generation sheet body (321) is connected to the cold end portion (31), and the other end of the power generation sheet body (321) is the output end (33).

3. The battery pack according to claim 2, characterized in that, The two power generation cell bodies (321) are respectively disposed on two side walls along the length of the same battery pack (20).

4. The battery pack according to claim 2, characterized in that, The two main bodies of the power generation cells (321) are parallel to each other.

5. The battery pack according to claim 2, characterized in that, Thermally conductive adhesive is provided between the main body of the power generation cell (321) and the battery pack (20).

6. The battery pack according to claim 1, characterized in that, The cold end portion (31) has multiple heat dissipation fins (311), and the cold end portion (31) is spaced apart from the battery pack (20).

7. The battery pack according to any one of claims 1 to 6, characterized in that, The number of battery packs (20) is equal to the number of power generation components (30) and corresponds one-to-one, and the cold end portion (31) of all the power generation components (30) is located at the same end of the battery packs (20).

8. The battery pack according to any one of claims 1 to 6, characterized in that, The housing assembly (10) has an air inlet (12) and an air outlet (13) communicating with the receiving cavity (11). The air inlet (12) and the air outlet (13) are both provided corresponding to the cold end portion (31), and the heat dissipation assembly (40) is provided in the air inlet (12).

9. The battery pack according to claim 8, characterized in that, The vent (13) is provided with louvers (131).

10. The battery pack according to any one of claims 1 to 6, characterized in that, The battery pack also includes an energy storage unit, and the output terminal (33) is electrically connected to the energy storage unit.

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