Battery pack shell and battery pack

Abstract

The utility model relates to the technical field of power batteries, and provides a battery pack shell and a battery pack. The battery pack shell comprises a shell body and a heat exchange structure arranged on the outer side of the shell body, the air inlet piece and the air outlet piece are arranged on the opposite sides of the shell body, the cover body is connected between the air inlet piece and the air outlet piece, an air inlet channel is formed in the air inlet piece, an air outlet channel is formed in the air outlet piece, and a heat exchange cavity communicating with the air inlet channel and the air outlet channel is defined between the cover body and the shell body; gas entering the heat exchange cavity from the air inlet channel can exchange heat with the shell body and flow out from the air outlet channel. According to the battery pack shell disclosed by the utility model, heat exchange can be carried out on the shell body through the heat exchange structure arranged on the outer side of the shell body, so that heat exchange can be carried out on the battery module outside the shell body, and the problems of condensation or dust accumulation and the like of a battery cell caused by the cleanliness, the humidity and the like of air can be avoided.

Description

Technical Field

[0001] This utility model relates to the field of power battery technology, and in particular to a battery pack housing. This utility model also relates to a battery pack having the aforementioned battery pack housing. Background Technology

[0002] Current trends in power battery design prioritize lightweighting. Power batteries typically generate significant heat during high-energy-density, high-power discharge, necessitating cooling structures. Common cooling methods include natural cooling, air cooling, liquid cooling, and direct cooling.

[0003] For battery packs with lower cooling requirements, natural cooling or air cooling is generally used. For battery packs with high energy density, large capacity, and high cooling requirements, liquid cooling or direct cooling is generally used. Some mild hybrid vehicles typically have a small, lower-capacity battery pack. This battery pack provides rapid starting or recovers energy during deceleration, improving the overall energy efficiency of the vehicle. Because this battery pack is small and usually not used continuously, its heating or cooling requirements are not high, so air cooling is generally used.

[0004] However, in existing technologies, most air-cooled battery packs are designed so that external air can directly contact the cells and electrical components. In other words, the battery pack is not completely sealed from the outside air. This allows humid air to enter the battery pack, causing insulation or corrosion problems, thus affecting the battery pack's lifespan and safety. Utility Model Content

[0005] In view of this, the present invention aims to provide a battery pack housing that enables heat exchange of the battery module outside the housing body.

[0006] To achieve the above objectives, the technical solution of this utility model is implemented as follows:

[0007] A battery pack housing includes a housing body and a heat exchange structure disposed on the outside of the housing body; the heat exchange structure includes an air inlet and an air outlet disposed on opposite sides of the housing body, and a cover connecting the air inlet and the air outlet; a heat exchange cavity is defined between the cover and the housing body, the air inlet has an air inlet channel communicating with the heat exchange cavity, and the air outlet has an air outlet channel communicating with the heat exchange cavity; gas entering the heat exchange cavity from the air inlet channel can exchange heat with the housing body and flow out through the air outlet channel.

[0008] Furthermore, the heat exchange chamber is provided with heat exchange fins, and multiple heat exchange fins are arranged at intervals, with branch channels formed between two adjacent heat exchange fins; the two ends of each branch channel are respectively connected to the air inlet channel and the air outlet channel.

[0009] Furthermore, each of the heat exchange fins extends along the direction from the air inlet channel to the air outlet channel, and each of the heat exchange fins has a plurality of arched portions arranged at intervals, with each arched portion arching out toward the same side of the heat exchange fin.

[0010] Furthermore, each of the heat exchange fins is connected to the outside of the housing body; and / or, each of the heat exchange fins is disposed on a connecting plate, and each of the heat exchange fins is connected to the outside of the housing body through the connecting plate.

[0011] Furthermore, both the air inlet and the air outlet are U-shaped and have accommodating grooves; the opposite sides of the housing body are respectively accommodated in the corresponding accommodating grooves.

[0012] Furthermore, there are two covers respectively disposed at the top and bottom of the housing body, and both covers are connected to the air inlet and the air outlet; the heat exchange chamber is defined between the corresponding cover and the top of the housing body, and between the corresponding cover and the bottom of the housing body.

[0013] Furthermore, each of the covers includes a first plate and a second plate extending along the opposite edge of the first plate toward the side where the housing body is located; a sealing element is provided between each second plate and the housing body, the sealing element being used to seal the gap between the second plate and the housing body.

[0014] Furthermore, a first positioning structure is provided between the air inlet component and the housing body, the first positioning structure being used to position the air inlet component on the housing body; and / or, a second positioning structure is provided between the air outlet component and the housing body, the second positioning structure being used to position the air inlet component on the housing body.

[0015] Furthermore, the first positioning structure includes a first positioning post disposed on one of the air inlet and the housing body, and a first positioning hole disposed on the other of the air inlet and the housing body, wherein the first positioning post is positioned in the first positioning hole; and / or, the second positioning structure includes a second positioning post disposed on one of the air outlet and the housing body, and a second positioning hole disposed on the other of the air outlet and the housing body, wherein the second positioning post is positioned in the second positioning hole.

[0016] Compared with the prior art, this utility model has the following advantages:

[0017] The battery pack described in this utility model utilizes a heat exchange structure located on the outside of the housing body. This structure includes an air inlet channel on the air inlet component, an air outlet channel on the air outlet component, and a heat exchange cavity connecting the air inlet and outlet channels. This allows heat exchange airflow to pass through the air inlet channel, heat exchange cavity, and air outlet channel. The gas flowing through the heat exchange cavity heats the housing body, achieving heat exchange for the battery module outside the housing body. Especially when the heat exchange cavity corresponds to the area where the battery module is located, it enables better heat exchange for the battery module outside the housing body, ensuring the battery pack operates in an optimal environment. Furthermore, it effectively prevents condensation or dust accumulation on the battery cells due to air cleanliness and humidity, thereby improving the battery pack's lifespan and safety, and providing excellent performance.

[0018] Furthermore, the multiple heat exchange fins installed within the heat exchange cavity increase the contact area between the projected area of ​​the battery module on the housing body and the air, thereby improving heat exchange efficiency. The fact that each heat exchange fin is a long, plate-like structure, and that multiple arches are formed on each fin, further increases the contact area between the projected area of ​​the battery module on the housing body and the air, thus further improving heat exchange efficiency.

[0019] Secondly, each heat exchange fin is connected to the outside of the housing body, so that each heat exchange fin is in direct contact with the housing body, which makes the overall structure of the battery pack more compact, reduces contact thermal resistance, and can transfer the heat generated by the battery module to the heat exchange fins more quickly.

[0020] Each heat exchange fin is mounted on a connecting plate and connected to the outside of the housing body via the connecting plate. In this case, the connecting plate, as an intermediate component, facilitates the integrated design of multiple heat exchange fins and allows the installation position and angle of multiple heat exchange fins to be flexibly adjusted according to actual needs. This makes it easier to adapt to housing bodies of different shapes and sizes. Moreover, when a heat exchange fin is damaged or needs to be replaced, only the corresponding heat exchange fin needs to be removed without operating the housing body, thereby reducing maintenance difficulty and shortening maintenance time.

[0021] Furthermore, both the air inlet and outlet components are U-shaped and have accommodating grooves. This structural design facilitates the connection of the air inlet and outlet components to the housing body, and also simplifies the arrangement of the air inlet and outlet channels. Two covers are located at the top and bottom of the housing body, each defining a heat exchange chamber. This allows for heat exchange at both the top and bottom of the battery module, further improving heat exchange efficiency.

[0022] Each cover includes a first plate and a second plate extending along the opposite edge of the first plate toward the side closer to the shell body. Its structure is relatively simple, easy to process and manufacture, and has a low manufacturing cost. At the same time, a sealing element is provided between each second plate and the shell body, which helps to ensure the sealing effect of the heat exchange cavity, thereby helping to ensure the reliability of heat exchange.

[0023] In addition, the first positioning structure ensures the positional accuracy of the air inlet component on the housing body and, to a certain extent, limits the movement and swaying of the air inlet component on the housing body, thus enhancing the stability of the entire battery pack structure. The second positioning structure ensures the positional accuracy of the air outlet component on the housing body and, to a certain extent, limits the movement and swaying of the air outlet component on the housing body, also enhancing the stability of the entire battery pack structure.

[0024] In addition, the first positioning structure adopts the positioning fit of the first positioning post and the first positioning hole, and the second positioning structure adopts the positioning fit of the second positioning post and the second positioning hole. This structural form can facilitate the positioning and installation of the air inlet component on the housing body, as well as the positioning and installation of the air outlet component on the housing body.

[0025] Another objective of this utility model is to provide an electrical device, which includes a battery pack as described above and an air source; the air source is connected to the air inlet channel.

[0026] The battery pack of this utility model, by adopting the above-mentioned battery pack shell, can realize heat exchange of the battery module outside the shell body, ensuring that the battery pack is in the optimal working environment, and can effectively avoid problems such as condensation or dust accumulation in the battery cells due to air cleanliness, humidity, etc., which is conducive to improving the service life and safety of the battery pack. Attached Figure Description

[0027] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:

[0028] Figure 1 This is a schematic diagram of the structure of the battery pack housing according to an embodiment of the present invention;

[0029] Figure 2 This is a cross-sectional view of the battery pack housing in its application state according to an embodiment of the present utility model;

[0030] Figure 3 This is an exploded view of the battery pack housing in its application state according to an embodiment of the present invention;

[0031] Figure 4This is a perspective view of the air inlet and air outlet components described in the embodiments of this utility model;

[0032] Figure 5 This is a top view of the air inlet and air outlet components described in this embodiment of the utility model;

[0033] Figure 6 for Figure 5 AA-view sectional view;

[0034] Figure 7 for Figure 5 BB-oriented sectional view in the middle;

[0035] Figure 8 This is a schematic diagram of the structure of the cover described in an embodiment of the present utility model;

[0036] Figure 9 This is a first-view structural schematic diagram of the heat exchange fins described in an embodiment of the present invention;

[0037] Figure 10 This is a second-view structural schematic diagram of the heat exchange fins described in an embodiment of the present invention;

[0038] Explanation of reference numerals in the attached figures:

[0039] 1. Casing body; 2. Air inlet; 3. Air outlet; 4. Cover; 5. Heat exchange fins; 6. Colloid;

[0040] 101. Lower housing; 102. Upper cover plate; 103. Battery module; 104. BDU; 105. BMS; 1011. First positioning hole; 201. First outer plate; 202. First inner plate; 203. First end plate; 204. Second end plate; 205. Receiving groove; 206. First connecting port; 207. First mounting hole; 208. Bolt; 301. Second outer plate; 302. Second inner plate; 303. Third end plate; 304. Fourth end plate; 305. Second mounting hole; 306. Second connecting port; 401. First plate; 402. Second plate; 501. Arched portion;

[0041] 10. Air inlet duct; 20. Air outlet duct; 200. Inlet; 300. Outlet. Detailed Implementation

[0042] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0043] In the following description, specific details such as particular system architectures and techniques are set forth for illustrative purposes and not for limitation, in order to provide a thorough understanding of the embodiments of this application. However, those skilled in the art will understand that this application may also be implemented in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, apparatuses, circuits, and methods have been omitted so as not to obscure the description of this application with unnecessary detail.

[0044] In the description of this utility model, it should be noted that if terms such as "upper," "lower," "inner," or "outer" appear, indicating orientation or positional relationship, they are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, if terms such as "first" or "second" appear, they are also used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0045] Furthermore, in the description of this utility model, unless otherwise explicitly defined, the terms "installation," "connection," "joining," and "connector" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model in light of the specific circumstances.

[0046] The present invention will now be described in detail with reference to the accompanying drawings and embodiments. Example

[0047] This embodiment relates to a battery pack housing that can exchange heat with the battery module 103 outside the housing body 1, thereby improving the battery pack's service life and safety.

[0048] In terms of overall structure, such as Figures 1 to 3 As shown, the battery pack housing in this embodiment includes a housing body 1 and a heat exchange structure disposed on the outside of the housing body 1. The heat exchange structure includes an air inlet 2 and an air outlet 3 disposed on opposite sides of the housing body 1, and a cover 4 connecting the air inlet 2 and the air outlet 3. The air inlet 2 has an air inlet channel 10, and the air outlet 3 has an air outlet channel 20. A heat exchange cavity is defined between the cover 4 and the housing body 1, connecting the air inlet channel 10 and the air outlet channel 20. Gas entering the heat exchange cavity from the air inlet channel 10 can exchange heat with the housing body and then flow out through the air outlet channel 20.

[0049] At this time, in the above structure, a heat exchange structure is set on the outside of the housing body 1, and the air inlet channel 10 set on the air inlet component 2, the air outlet channel 20 set on the air outlet component 3, and the heat exchange cavity connecting the air inlet channel 10 and the air outlet channel 20 are used to make the gas (e.g., cold air or hot air) flow through the air inlet channel 10, the heat exchange cavity and the air outlet channel 20 in sequence to exchange heat with the housing body 1, thereby realizing heat exchange of the battery module 103 on the outside of the housing body 1. Moreover, when the heat exchange cavity is set in the area where the battery module 103 is located, the heat exchange of the battery module 103 on the outside of the housing body 1 can be better achieved.

[0050] In other words, the heat exchange structure in this embodiment can both insulate and heat the battery pack in extremely cold conditions, and cool it when the battery module 103 generates a large amount of heat, thus ensuring the battery pack operates in an optimal environment. Furthermore, it effectively prevents condensation or dust accumulation in the battery cells due to factors such as air cleanliness and humidity, thereby improving the battery pack's lifespan and safety.

[0051] Based on the above overview, for more details, please refer to [link / reference]. Figures 1 to 3 As shown, the battery pack housing in this embodiment firstly includes a housing body 1, which includes a lower housing 101 and an upper cover plate 102 connected to the lower housing 101. A sealed receiving cavity is formed between the upper cover plate 102 and the lower housing 101. This receiving cavity is used to accommodate components such as the battery module 103, BDU 104 (Battery Disconnect Unit), and BMS 105 (Battery Management System).

[0052] The heat exchange structure is located on the outside of the housing body 1, that is, on the outside of the lower housing 101 and the upper cover 102. The air inlet 2 and the air outlet 3 are located on opposite sides of the housing body 1. The air inlet 2 has an air inlet channel 10, and the air outlet 3 has an air outlet channel 20. The two ends of the cover 4 are fixedly connected to the air inlet 2 and the air outlet 3, respectively. A heat exchange cavity is defined between the cover 4 and the housing body 1, connecting the air inlet channel 10 and the air outlet channel 20. This heat exchange cavity is correspondingly arranged with the battery module and can exchange heat in the projected area of ​​the battery module 103 on the housing body 1.

[0053] It should be noted that the projection area of ​​the battery module 103 on the housing body 1 can be either the portion of the corresponding battery module 103 projected onto the upper cover 102, or the portion of the corresponding battery module 103 projected onto the bottom of the lower housing 101. It should also be noted that the cover 4 can be fixed to the air inlet 2 and the air outlet 3, for example, by welding, to ensure the reliability of the connection between the cover 4 and the air inlet 2 and the air outlet 3.

[0054] In a preferred embodiment of this invention, a plurality of heat exchange fins 5 are arranged at intervals within the heat exchange cavity, and branch channels are formed between adjacent heat exchange fins 5. Each branch channel is connected at both ends to an air inlet channel 10 and an air outlet channel 20, respectively. In this configuration, the plurality of heat exchange fins 5 within the heat exchange cavity increases the area of ​​contact between the projected region of the housing body 1 corresponding to the battery module 103 and the air, thereby improving heat exchange efficiency.

[0055] In some feasible implementations, multiple heat exchange fins 5 are connected to the outside of the housing body 1. In this way, each heat exchange fin 5 is in direct contact with the housing body 1, which makes the overall structure of the battery pack more compact, reduces contact thermal resistance, and enables the heat generated by the battery module 103 to be transferred to the heat exchange fins 5 more quickly.

[0056] In practice, multiple heat exchange fins 5 can be integrally formed on the upper cover plate 102, or integrally formed on the bottom or side of the lower shell 101. Alternatively, multiple heat exchange fins 5 can be bonded to the upper cover plate 102, the bottom of the lower shell 101, or the side of the lower shell 101 using adhesive 6. The key is to ensure that the multiple heat exchange fins 5 can be reliably and directly connected to the shell body 1.

[0057] In some feasible implementations, each heat exchange fin 5 is disposed on a connecting plate, and each heat exchange fin 5 is connected to the outside of the housing body 1 through the connecting plate. This structural form, with the connecting plate as an intermediate component, facilitates the integrated design of multiple heat exchange fins 5, and allows the installation position and angle of multiple heat exchange fins 5 to be flexibly adjusted according to actual needs. It is easier to adapt to housing bodies 1 of different shapes and sizes. Moreover, when a heat exchange fin 5 is damaged or needs to be replaced, only the corresponding heat exchange fin 5 needs to be removed, without operating the housing body 1, thereby reducing maintenance difficulty and shortening maintenance time.

[0058] It should be noted that the connection between the multiple heat exchange fins 5 and the connecting plate can be integrally formed on the connecting plate, or it can be fixed to the connecting plate by adhesive bonding. The connection between the connecting plate and the shell body 1 can be fixed to the shell body 1 by means of screwing, plugging, or adhesive bonding.

[0059] It should also be noted that, in addition to being set at the bottom of the upper cover plate 102 and the lower shell 101, the heat exchange fins 5 can also be set on the side of the lower shell 101, which can further increase the heat exchange area and improve the heat exchange efficiency.

[0060] In a preferred embodiment, both the air inlet 2 and the air outlet 3 are U-shaped and each has a receiving groove 205, with the opposite sides of the housing body respectively housed in the corresponding receiving groove 205. In this case, the receiving grooves formed on the air inlet 2 and the air outlet 3 facilitate the accommodating of the opposite sides of the housing body within the corresponding receiving grooves, which is beneficial for the connection of the air inlet 2 and the air outlet 3 to the housing body, and also facilitates the arrangement of the air inlet channel 10 and the air outlet channel 20.

[0061] Reference Figures 3 to 7 As shown, preferably, the air inlet 2 and the air outlet 3 are structurally identical, wherein the structure of the air inlet 2 is as follows: Figures 3 to 6 As shown, the air inlet 2 includes a U-shaped first outer plate 201 and a first inner plate 202, as well as a first end plate 203 and a second end plate 204 connecting the first outer plate 201 and the first inner plate 202. The first outer plate 201, the first inner plate 202, the first end plate 203, and the second end plate 204 form an air inlet channel 10. In the cross-section of the air inlet 2, the air inlet channel 10 is also U-shaped, and a first connecting port 206 is formed at both ends of the U-shaped air inlet 2. The air inlet channel 10 communicates with the heat exchange chamber through these first connecting ports 206. Furthermore, an inlet 200 of the air inlet channel 10 is provided on the first end plate 203.

[0062] Similarly, the air outlet component 3 is also structurally similar. Figures 3 to 5 and Figure 7 As shown, the air outlet component 3 includes a U-shaped second outer plate 301 and a second inner plate 302, and a third end plate 303 and a fourth end plate 304 connecting the second outer plate 301 and the second inner plate 302. An air outlet channel 20 is formed between the second outer plate 301, the second inner plate 302, and the third and fourth end plates 303 and 304. The air outlet channel 20 is also U-shaped in cross-section, and a second connecting port 306 is formed at both ends of the U-shaped air outlet component 3. The air outlet channel 20 communicates with the heat exchange chamber through these second connecting ports 306. An outlet 300 of the air outlet channel 20 is provided on the third end plate 303.

[0063] It is worth noting that in this embodiment, the inlet 200 of the air inlet channel 10 and the outlet 300 of the air outlet channel 20 are arranged at opposite positions on the housing body 1. This can extend the airflow path and further improve the heat exchange effect on the battery module 103 area.

[0064] As a preferred embodiment, in this embodiment, reference is made to Figures 1 to 3 The cover 4 consists of two units located at the top and bottom of the housing body 1, both connected to the air inlet 2 and the air outlet 3. A heat exchange chamber is defined between the corresponding cover 4 and the top of the housing body 1, and between the corresponding cover 4 and the bottom of the housing body 1. With two covers 4 located at the top and bottom of the housing body 1, and heat exchange chambers defined at both the top and bottom, heat exchange can be performed on both the top and bottom of the battery module 103, thereby further improving heat exchange efficiency.

[0065] In terms of specific structure, as a further preferred embodiment, refer to Figures 1 to 3 and combined Figure 8 As shown, each cover 4 includes a first plate 401 and second plates 402 extending from the opposite edges of the first plate 401 toward the side closest to the housing body 1. This structural design makes the cover 4 relatively simple in structure, easy to process and manufacture, and has a low manufacturing cost. Meanwhile, each second plate 402 is provided with a sealing element between itself and the housing body 1 to seal the gap between the second plate 402 and the housing body 1. The sealing elements provided between each second plate 402 and the housing body 1 help ensure the sealing effect of the heat exchange chamber, thereby ensuring the reliability of heat exchange.

[0066] As a preferred implementation method, combined with Figure 3 , Figure 9 and Figure 10 As shown, in this embodiment, each heat exchange fin 5 extends along the direction from the air inlet channel 10 to the air outlet channel 20, that is, each heat exchange fin 5 is in the shape of a long strip plate, and each heat exchange fin 5 has a plurality of spaced-apart arched portions 501, each arched portion 501 arching out to the same side of the heat exchange fin 5. At this time, by setting each heat exchange fin 5 to a long strip plate structure, and by forming a plurality of arched portions 501 on each heat exchange fin 5, the area of ​​the projected area on the housing body 1 corresponding to the battery module 103 in contact with the air can be further increased, thereby further improving the heat exchange efficiency.

[0067] It is worth noting that the aforementioned sealing components can be, for example, sealing strips or sealant. Of course, in addition to the heat exchange fins 5 within the heat exchange chamber, the second plate 402 can be positioned to abut against the shell body 1 as closely as possible, minimizing the gap between the second plate 402 and the shell body 1. This way, by utilizing the cooperation between the two outermost heat exchange fins 5 and the second plate 402 on the same side, the amount of airflow exiting the heat exchange chamber through the gap between the second plate 402 and the shell body 1 can be negligible, thus ensuring the heat exchange effect within the heat exchange chamber.

[0068] To ensure the positional accuracy of the air inlet component 2 and the air outlet component 3 on the housing body 1, and to ensure that the positions of the air inlet component 2, the air outlet component 3, and the cover 4 correspond to the position of the battery module 103, a first positioning structure is provided between the air inlet component 2 and the housing body 1 in this embodiment. The first positioning structure is used to position the air inlet component 2 on the housing body 1. By setting the first positioning structure, the positional accuracy of the air inlet component 2 on the housing body 1 can be ensured, and to a certain extent, the movement and shaking of the air inlet component 2 on the housing body 1 can be limited, thereby enhancing the stability of the entire battery pack structure.

[0069] Furthermore, a second positioning structure is provided between the air outlet 3 and the housing body 1. The second positioning structure is used to position the air inlet 2 on the housing body 1. By setting the second positioning structure, the positional accuracy of the air outlet 3 on the housing body 1 can be guaranteed, and to a certain extent, the movement and shaking of the air outlet 3 on the housing body 1 can also be limited, thereby enhancing the stability of the entire battery pack structure.

[0070] It should be noted that, in addition to setting both the first positioning structure and the second positioning structure, it is also possible to set only the first positioning structure or only the second positioning structure. Such settings are also acceptable.

[0071] In some feasible implementations, the first positioning structure of this embodiment includes a first positioning post disposed on one of the air inlet component 2 and the housing body 1, and a first positioning hole disposed on the other of the air inlet component 2 and the housing body 1, with the first positioning post positioned in the first positioning hole. The second positioning structure includes a second positioning post disposed on one of the air outlet component 3 and the housing body 1, and a second positioning hole disposed on the other of the air outlet component 3 and the housing body 1, with the second positioning post positioned in the second positioning hole.

[0072] At this time, the first positioning structure adopts the positioning fit of the first positioning post and the first positioning hole, and the second positioning structure adopts the positioning fit of the second positioning post and the second positioning hole. This structure can facilitate the positioning and installation of the air inlet 2 on the housing body 1, and the positioning and installation of the air outlet 3 on the housing body 1.

[0073] In terms of specific structure, for example, a first mounting hole 207 and a second mounting hole 305 can be respectively provided on the air inlet 2 and the air outlet 3. A first protrusion protruding towards the air inlet 2 and a second protrusion protruding towards the air outlet 3 are provided at corresponding positions on the housing body 1. The first protrusion has a first positioning hole 1011, and the second protrusion has a second positioning hole. For example, both the first and second positioning components are bolts 208. The bolts 208 pass through the first mounting hole 207 and are screwed into the first positioning hole 1011, thus positioning the air inlet 2 on the housing body 1. The second positioning component passes through the second mounting hole 305 and is screwed into the second positioning hole, thus positioning the air outlet 3 on the housing body 1.

[0074] It is worth noting that the first mounting hole is not connected to the air inlet channel 10 inside the air inlet component 2, and the second mounting hole is not connected to the air outlet channel 20 inside the air outlet component 3. It is also worth noting that, in addition to the above structural form, fixing plates can be provided at both ends of the air inlet component 2 and the air outlet component 3, with fixing holes on the fixing plates. The air inlet component 2 and the air outlet component 3 can be fixed to the corresponding sides of the housing body 1 using bolts or similar devices installed in the fixing holes. This also achieves the installation and positioning of the air inlet component 2 and the air outlet component 3 on the housing body 1.

[0075] In this embodiment, the battery pack is connected to the air inlet channel 10 via an external air source during actual use, and heat exchange air is blown into the air inlet channel 10. The flow path of the heat exchange air source in the heat exchange structure is as follows: Figure 2 As shown by the arrows, the heat exchange air source flows sequentially through the air inlet channel 10, multiple branch channels located above and below the shell body 1, and the air outlet channel 20, and is discharged through the outlet 300 of the air outlet channel 20, thus achieving heat exchange for the shell body 1.

[0076] In this embodiment, the battery pack can exchange heat with the battery module 103 outside the housing body 1, ensuring that the battery pack is in the best working environment. It can also effectively avoid problems such as condensation or dust accumulation in the battery cells due to air cleanliness and humidity, thereby improving the service life and safety of the battery pack. Example

[0077] This embodiment relates to a battery pack, which includes the battery pack housing of Embodiment 1.

[0078] In practical use, an air source needs to be installed outside the battery pack so that the air source is connected to the air inlet channel 10. When the battery pack of this embodiment is used in electrical equipment, the air source is specifically installed in the electrical equipment, and in specific implementation, an air inlet pipe can be installed between the air source and the air inlet channel 10, and the air source is connected to the air inlet channel 10 through the air inlet pipe.

[0079] The battery pack of this embodiment, by adopting the battery pack shell of Embodiment 1, can achieve heat exchange of the battery module 103 outside the shell body 1, so that the battery pack is in the optimal working environment, and can effectively avoid problems such as condensation or dust accumulation in the battery cells due to air cleanliness, humidity, etc., which is conducive to improving the service life and safety of the battery pack.

[0080] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A battery pack housing, characterized in that: It includes a housing body and a heat exchange structure disposed on the outside of the housing body; The heat exchange structure includes an air inlet and an air outlet located on opposite sides of the housing body, and a cover connecting the air inlet and the air outlet. A heat exchange cavity is defined between the cover and the shell body. The air inlet component is provided with an air inlet channel communicating with the heat exchange cavity, and the air outlet component is provided with an air outlet channel communicating with the heat exchange cavity. The gas entering the heat exchange chamber through the air inlet channel can exchange heat with the shell body and then flow out through the air outlet channel.

2. The battery pack housing according to claim 1, characterized in that: The heat exchange cavity is provided with heat exchange fins, and there are multiple heat exchange fins arranged at intervals, with branch channels formed between two adjacent heat exchange fins. Each of the branch channels is connected at both ends to the air inlet channel and the air outlet channel, respectively.

3. The battery pack housing according to claim 2, characterized in that: Each heat exchange fin extends along the air inlet channel toward the air outlet channel, and each heat exchange fin has a plurality of arched portions arranged at intervals, with each arched portion arching toward the same side of the heat exchange fin.

4. The battery pack housing according to claim 2, characterized in that: Each of the heat exchange fins is connected to the outside of the housing body; and / or, Each of the heat exchange fins is disposed on the connecting plate, and each of the heat exchange fins is connected to the outside of the housing body through the connecting plate.

5. The battery pack housing according to claim 1, characterized in that: Both the air inlet and the air outlet are U-shaped and have accommodating grooves. The opposite sides of the housing body are respectively housed in the corresponding receiving grooves.

6. The battery pack housing according to claim 5, characterized in that: The cover is two separate covers located at the top and bottom of the housing body, and both covers are connected to the air inlet and air outlet components; The heat exchange chamber is defined between the top of the corresponding cover and the top of the corresponding housing body, and between the corresponding cover and the bottom of the corresponding housing body.

7. The battery pack housing according to claim 6, characterized in that: Each of the aforementioned covers includes a first plate and a second plate extending along the opposite edges of the first plate toward the side closer to the housing body; Each of the second plates is provided with a sealing element between itself and the housing body, and the sealing element is used to seal the gap between the second plate and the housing body.

8. The battery pack housing according to any one of claims 1 to 7, characterized in that: A first positioning structure is provided between the air inlet component and the housing body, the first positioning structure being used to position the air inlet component on the housing body; and / or A second positioning structure is provided between the air outlet component and the housing body, the second positioning structure being used to position the air inlet component on the housing body.

9. The battery pack housing according to claim 8, characterized in that: The first positioning structure includes a first positioning post disposed on one of the air inlet and the housing body, and a first positioning hole disposed on the other of the air inlet and the housing body, wherein the first positioning post is positioned in the first positioning hole; And / or, The second positioning structure includes a second positioning post disposed on one of the air outlet and the housing body, and a second positioning hole disposed on the other of the air outlet and the housing body, wherein the second positioning post is positioned in the second positioning hole.

10. A battery pack, characterized in that: The battery pack includes a battery pack housing as described in any one of claims 1 to 9.

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