Battery pack casing and battery pack

Abstract

This utility model discloses a battery pack housing and a battery pack. The battery pack housing has a battery mounting cavity formed inside. The battery pack housing includes: a base plate located at the bottom of the battery mounting cavity, the base plate having a receiving groove open towards the battery mounting cavity; and a liquid cooling pipe installed in the receiving groove for heat exchange with the battery in the battery mounting cavity. In this embodiment of the battery pack housing, the base plate supports and protects the battery from the bottom, and the liquid cooling pipe allows coolant to flow within it for heat exchange with the battery. The receiving groove on the base plate allows the liquid cooling pipe to partially overlap with the space occupied by the base plate in the height direction, reducing the space occupied by the battery pack housing in the height direction and thus facilitating battery pack installation in vehicles.

Description

Technical Field

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

[0002] With the rapid development of the electric vehicle market, optimizing battery pack space has become a key factor. Currently, most battery packs on the market have a high stamping feature at the bottom to support the liquid cooling plate and battery cells. This results in a large Z-axis space occupied from the bottom of the battery cell to the bottom of the pack, which in turn leads to a large Z-axis space occupied by the battery pack itself, indicating room for improvement. Utility Model Content

[0003] This utility model aims to solve at least one of the technical problems existing in the prior art. To this end, this utility model proposes a battery pack housing that can install and protect the battery, and can reduce the space occupied by the battery pack housing along the height direction, thereby reducing the space occupied by the battery pack along the height direction and facilitating the installation of the battery pack in the vehicle.

[0004] According to an embodiment of the present utility model, a battery pack housing is formed inside the battery pack housing. The battery pack housing includes: a bottom plate located at the bottom of the battery mounting cavity, the bottom plate having a receiving groove open toward the battery mounting cavity; and a liquid cooling pipe installed in the receiving groove and used for heat exchange with the battery in the battery mounting cavity.

[0005] According to the battery pack housing of this utility model embodiment, the battery can be installed and protected by forming a battery mounting cavity inside the battery pack housing. The battery pack housing includes a base plate and a liquid cooling pipe. The base plate is used to support and protect the battery from the bottom. The liquid cooling pipe is used to allow coolant to flow inside it to exchange heat with the battery. The base plate has a receiving groove. The liquid cooling pipe is installed in the receiving groove, so that the space occupied by the liquid cooling pipe and the base plate in the height direction of the base plate partially overlaps. This can reduce the space occupied by the battery pack housing in the height direction, which is beneficial for the installation of the battery pack in the vehicle.

[0006] According to some embodiments of the present invention, the battery pack housing has a base plate with a plurality of protrusions on the surface facing the battery mounting cavity, the plurality of protrusions defining the receiving groove.

[0007] According to some embodiments of the present invention, the battery pack housing has a protrusion constructed as an elongated boss, which extends along a first direction and is disposed on the base plate, and a plurality of elongated bosses are spaced apart along a second direction on the base plate, the first direction intersecting the second direction; and / or, a support plane is formed on the upper surface of the protrusion, the support plane being used to support the battery.

[0008] According to some embodiments of the present invention, the battery pack housing has a first direction configured along the length direction of the base plate and a second direction configured along the width direction of the base plate.

[0009] According to some embodiments of the present invention, the battery pack housing is configured such that the liquid cooling pipe and the receiving groove are at least partially S-shaped; and / or, there are multiple liquid cooling pipes, and all of the multiple liquid cooling pipes are installed in the receiving groove; and / or, each liquid cooling pipe is provided with an inlet port and an outlet port.

[0010] According to some embodiments of the present invention, the battery pack housing includes a first fixing member, wherein the water inlet ports of the plurality of liquid cooling pipes are fixed to the base plate by the first fixing member, and / or the liquid cooling pipe includes a second fixing member, wherein the water outlet ports of the plurality of liquid cooling pipes are fixed to the base plate by the second fixing member.

[0011] According to some embodiments of the present invention, in the battery pack housing, the water inlet ports of the plurality of liquid cooling pipes are all located at the same end of the base plate; and / or, the water outlet ports of the plurality of liquid cooling pipes are all located at the same end of the base plate; and / or, the water inlet ports and the water outlet ports of the plurality of liquid cooling pipes are all located at the same end of the base plate.

[0012] According to some embodiments of the present invention, the inner surface of the receiving groove is coated with a thermal insulation coating, the thermal insulation coating being located between the base plate and the liquid cooling pipe; and / or, the side of the liquid cooling pipe facing the battery mounting cavity is coated with a thermally conductive structural adhesive; and / or, the side of the base plate away from the battery mounting cavity is coated with a PVC coating.

[0013] According to some embodiments of the present invention, the battery pack housing further includes a side panel that extends circumferentially along the housing and is connected above the bottom plate; and / or, the bottom plate is formed by stamping.

[0014] This utility model also proposes a battery pack.

[0015] The battery pack according to the present invention includes the battery pack housing described in any of the above embodiments.

[0016] The battery pack and the aforementioned battery pack housing have the same advantages over the prior art, and will not be elaborated here.

[0017] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0018] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0019] Figure 1 This is a schematic diagram of the structure of the battery pack housing according to an embodiment of the present utility model. Figure 1 ;

[0020] Figure 2 This is a schematic diagram of the structure of the battery pack housing according to an embodiment of the present utility model. Figure 2 ;

[0021] Figure 3 This is a schematic diagram of the structure of the liquid cooling pipe of the battery pack housing according to an embodiment of the present utility model;

[0022] Figure 4 This is a schematic diagram of the structure of the battery pack housing according to an embodiment of the present utility model. Figure 3 ;

[0023] Figure 5 This is a schematic diagram of the structure of the battery pack housing according to an embodiment of the present utility model. Figure 4 ;

[0024] Figure 6 This is a partial cross-sectional view of the bottom plate of the battery pack housing according to an embodiment of the present utility model.

[0025] Figure label:

[0026] Battery pack casing 100,

[0027] Battery mounting cavity 1, base plate 2, receiving groove 21, protrusion 22, supporting plane 221, liquid cooling pipe 3, water inlet interface 31, water outlet interface 32, first fixing member 33, second fixing member 34, side panel 4. Detailed Implementation

[0028] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0029] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating the orientation or positional relationship shown in the accompanying drawings, 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, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0030] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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 based on the specific circumstances.

[0031] Unless otherwise specified, the front-back direction in this application refers to the longitudinal direction of the vehicle, i.e., the X direction; the left-right direction refers to the lateral direction of the vehicle, i.e., the Y direction; and the up-down direction refers to the vertical direction of the vehicle, i.e., the Z direction.

[0032] The following is for reference. Figures 1-6 The battery pack housing 100 according to the present utility model embodiment can install and protect the battery, and can reduce the space occupied by the battery pack housing 100 in the height direction, thereby reducing the space occupied by the battery pack in the height direction and facilitating the installation of the battery pack on the vehicle.

[0033] like Figures 1-6 As shown, a battery pack housing 100 according to an embodiment of the present invention has a battery mounting cavity 1 formed therein. The battery pack housing 100 includes a base plate 2 and a liquid cooling pipe 3.

[0034] The base plate 2 is located at the bottom of the battery mounting cavity 1, and the base plate 2 has a receiving groove 21 that opens into the battery mounting cavity 1; the liquid cooling pipe 3 is installed in the receiving groove 21 and is used to exchange heat with the battery in the battery mounting cavity 1.

[0035] Specifically, the battery pack housing 100 is an important component of the battery pack, used to resist external impacts and prevent damage to the batteries installed inside the battery pack. A battery mounting cavity 1 is formed inside the battery pack housing 100. The battery mounting cavity 1 has a large volume and can be used to accommodate the battery, so that the battery pack housing 100 can protect the battery from the outside to avoid dangerous situations such as short circuits, fires or even explosions caused by the battery being squeezed. The battery pack housing 100 includes a base plate 2 and a liquid cooling pipe 3. The base plate 2 is used to support and protect the battery, and the liquid cooling pipe 3 is used to cool the battery.

[0036] Furthermore, the base plate 2 is located at the bottom of the battery mounting cavity 1, meaning it can be placed at the bottom of the battery. This allows the base plate 2 to support the weight of the battery, preventing it from sinking or deforming due to its own weight. The base plate 2 also provides some protection, shielding the battery from scratches and impacts. The liquid cooling pipe 3 can be constructed as a hollow tube, allowing coolant to flow inside for heat exchange with the battery and cooling it down. The liquid cooling pipe 3 can be placed inside the battery pack housing 100, bringing it close to the battery to facilitate heat exchange between the coolant and the battery. This ensures the battery always operates within its optimal temperature range, improving its safety, performance, and lifespan.

[0037] Among them, by setting up liquid cooling pipe 3 to cool the battery, the liquid cooling pipe 3 can replace the traditional liquid cooling plate, which can reduce the installation cost. The coolant can be cooling water. In addition, in actual design, the base plate 2 can be made of metal material to take advantage of its high strength and improve the reliability of the base plate 2 in supporting and protecting the battery.

[0038] Furthermore, the base plate 2 has a receiving groove 21 for installing the liquid cooling pipe 3. The liquid cooling pipe 3 can be placed in the receiving groove 21 for installation and fixation, ensuring the reliability of cooling the battery. The receiving groove 21 is configured to open towards the battery mounting cavity 1, so that the liquid cooling pipe 3 placed in the receiving groove 21 can be positioned towards the battery, allowing the liquid cooling pipe 3 to approach the battery for cooling. It is also easy to place or remove the liquid cooling pipe 3 from the receiving groove 21, which facilitates installation or removal of the liquid cooling pipe 3. This also makes it easy to replace the liquid cooling pipe 3 if it fails for any reason, reducing maintenance costs.

[0039] The receiving groove 21 has a certain depth. The liquid cooling pipe 3 is placed in the receiving groove 21 so that the space occupied by the liquid cooling pipe 3 and the receiving groove 21 in the height direction of the base plate 2 coincides. This reduces the distance between the bottom of the battery and the bottom of the base plate 2, thereby reducing the size of the battery pack housing 100 in the height direction and the size of the battery pack in the height direction. This facilitates the installation of the battery pack on the vehicle. In actual design, the liquid cooling pipe 3 can be completely placed in the receiving groove 21 in the height direction of the base plate 2 to maximize the overlap area of ​​the space occupied by the liquid cooling pipe 3 and the base plate 2 in the height direction of the base plate 2, effectively reducing the size of the battery pack housing 100 in the height direction.

[0040] It should be noted that the battery pack is usually installed horizontally on the vehicle, and the height direction of the base plate 2 is the same as the height direction of the battery pack casing 100, which is also the vertical direction of the vehicle.

[0041] According to the battery pack housing 100 of this utility model embodiment, the battery can be installed and protected by forming a battery mounting cavity 1 inside the battery pack housing 100. The battery pack housing 100 includes a base plate 2 and a liquid cooling pipe 3. The base plate 2 is used to support and protect the battery from the bottom. The liquid cooling pipe 3 is used to allow coolant to flow inside it to exchange heat with the battery. The base plate 2 has a receiving groove 21. The liquid cooling pipe 3 is installed in the receiving groove 21, so that the space occupied by the liquid cooling pipe 3 and the base plate 2 in the height direction of the base plate 2 partially overlaps. This can reduce the space occupied by the battery pack housing 100 in the height direction, which is beneficial to the installation of the battery pack on the vehicle.

[0042] In some embodiments, the base plate 2 has a plurality of protrusions 22 formed on the surface facing the battery mounting cavity 1, the plurality of protrusions 22 defining the receiving groove 21.

[0043] Specifically, the base plate 2 is located at the bottom of the battery mounting cavity 1 to support and protect the battery, and the base plate 2 has a receiving groove 21 for installing the liquid cooling pipe 3, such as... Figures 1-2 and Figure 6 As shown, the base plate 2 has a protrusion 22 formed on the surface of the base plate 2 facing the battery mounting cavity 1, so that the protrusion 22 can be brought closer to the battery to support the battery. There are multiple protrusions 22, that is, the number of protrusions 22 can be two, three or more, so that the battery can be supported by multiple protrusions 22, which can improve the reliability of battery support. Moreover, the multiple protrusions 22 can be evenly distributed so that multiple protrusions 22 can support the battery at multiple positions at the same time, which can improve the stability of battery support.

[0044] Furthermore, multiple protrusions 22 are used to define the receiving groove 21. The protrusions 22 are configured to extend from the surface of the base plate 2 toward the battery mounting cavity 1 toward the battery mounting cavity 1, so that the protrusions 22 can have a certain height, and the multiple protrusions 22 can be evenly spaced apart, so that there can be a certain distance between the multiple protrusions 22, so that the multiple protrusions 22 can jointly define the receiving groove 21, and the receiving groove 21 can have a certain depth, so that the liquid cooling pipe 3 can be placed in the receiving groove 21, and the liquid cooling pipe 3 can overlap with the space occupied by the base plate 2 in the height direction of the base plate 2, thereby reducing the space occupied by the battery pack housing 100 in the height direction.

[0045] It should be noted that the multiple protrusions 22 can be configured to have the same extension length along the height direction of the base plate 2, so as to further improve the stability of the multiple protrusions 22 in supporting the battery. In addition, the upper surface of the receiving groove 21 can be higher than the upper surface of the liquid cooling pipe 3, so as to avoid the battery pressing the liquid cooling pipe 3 and causing damage and failure of the liquid cooling pipe 3.

[0046] In some embodiments, the protrusion 22 is configured as an elongated protrusion extending along a first direction and disposed on the base plate 2, and a plurality of elongated protrusions are spaced apart along a second direction on the base plate 2, the first direction intersecting the second direction; and / or, a support plane 221 is formed on the upper surface of the protrusion 22, the support plane 221 being used to support the battery.

[0047] Specifically, there are multiple protrusions 22, which are used to support the battery together. The protrusions 22 are constructed as elongated bosses, which extend along the first direction and are disposed on the base plate 2. This allows multiple elongated bosses to be disposed on the base plate 2, so that the elongated bosses can be close to the battery to facilitate support. The elongated bosses also have a certain length along the first direction to increase the contact area between the elongated bosses and the battery, thereby improving the reliability of battery support. At the same time, the multiple elongated bosses are distributed at intervals along the second direction on the base plate 2, so that the multiple elongated bosses are arranged parallel to each other along the second direction, and there is a certain distance between the multiple elongated bosses. This allows the multiple elongated bosses to support the battery at multiple positions along the second direction at the same time, thereby improving the stability of battery support.

[0048] Wherein, the first direction and the second direction intersect, so that a certain angle is formed between the first direction and the second direction, so as to avoid the first direction and the second direction being parallel, which would increase the space occupied by multiple long strip protrusions along the first direction or the second direction. This can prevent the extension length of the base plate 2 along the first direction or the second direction from being too large, so as to facilitate the setting of the battery pack. The first direction can be one of the length direction and the width direction of the base plate 2, and the second direction can be the other of the length direction and the width direction of the base plate 2.

[0049] Furthermore, the multiple protrusions 22 can collectively define a receiving groove 21 for installing the liquid cooling pipe 3. By distributing the multiple elongated protrusions at intervals along the second direction, the multiple elongated protrusions can be arranged parallel to each other along the second direction, so that a receiving groove 21 can be formed between any two adjacent elongated protrusions. This can help increase the length of the receiving groove 21, thereby increasing the length of the liquid cooling pipe 3 and improving the reliability and efficiency of cooling the battery.

[0050] Furthermore, the protrusion 22 has a supporting plane 221 for supporting the battery. The supporting plane 221 has a certain area, which can increase the contact area between the protrusion 22 and the battery, thereby improving the reliability of supporting the battery. Moreover, by forming the supporting plane 221 on the upper surface of the protrusion 22, the supporting plane 221 can be formed on the surface of the protrusion 22 facing the battery, so that the supporting plane 221 can be close to the battery, making it easier to contact the battery for supporting the battery, which can further improve the reliability of supporting the battery.

[0051] In some embodiments, the first direction is set along the length direction of the base plate 2, and the second direction is set along the width direction of the base plate 2.

[0052] Specifically, the protrusions 22 are configured to extend along a first direction, and multiple protrusions 22 are spaced apart along a second direction. The first direction is set along the length of the base plate 2, and the second direction is set along the width of the base plate 2. This configuration allows the protrusions 22 to extend along the length of the base plate 2, effectively increasing the length of the protrusions 22 and thus increasing the contact area between the protrusions 22 and the battery, improving the reliability of battery support. Furthermore, the spaced distribution of multiple protrusions 22 along the width of the base plate 2 allows them to simultaneously support the battery at multiple locations along the width of the base plate 2, improving the stability of battery support. Simultaneously, it reduces the number of protrusions 22, lowering the installation difficulty, and prevents the protrusions 22 from extending too far along the length or width of the base plate 2, thereby preventing the base plate 2 from extending too far along its own length or width, facilitating the installation of the battery pack.

[0053] It should be noted that in actual design, the first direction can be set along the width of the base plate 2 and the second direction can be set along the length of the base plate 2. Both can achieve reliable support for the battery, and the first and second directions can be flexibly set according to the actual situation.

[0054] In some embodiments, both the liquid cooling pipe 3 and the receiving tank 21 are configured to extend in an S-shape at least partially; and / or, there are multiple liquid cooling pipes 3, and all of the multiple liquid cooling pipes 3 are installed in the receiving tank 21; and / or, each liquid cooling pipe 3 is provided with an inlet port 31 and an outlet port 32.

[0055] Specifically, the receiving tank 21 is used to install the liquid cooling pipe 3, which allows the coolant to flow inside for heat exchange with the battery. By extending at least a portion of the receiving tank 21 in an S-shape, or by constructing part or all of the receiving tank 21 in an S-shape, the length of the receiving tank 21 can be increased, thereby increasing the length of the liquid cooling pipe 3 installed in the receiving tank 21. This improves the reliability and efficiency of cooling the battery. Furthermore, by constructing the liquid cooling pipe 3 in an S-shape, or by constructing part or all of the liquid cooling pipe 3 in an S-shape, the liquid cooling pipe 3 can be adapted to the shape of the receiving tank 21, and the S-shaped extension of the liquid cooling pipe 3 can correspond to the S-shaped extension of the receiving tank 21, thereby improving the reliability of installing the liquid cooling pipe 3.

[0056] Furthermore, there are multiple liquid cooling pipes 3, that is, there can be two, three or more liquid cooling pipes 3, so that the coolant can flow in multiple liquid cooling pipes 3 at the same time to exchange heat with the battery simultaneously, which can improve the reliability and efficiency of cooling the battery. Moreover, by installing multiple liquid cooling pipes 3 in the receiving tank 21, multiple liquid cooling pipes 3 can be installed in the receiving tank 21 respectively, so as to achieve reliable installation of multiple liquid cooling pipes 3 and avoid interference between multiple liquid cooling pipes 3, thereby improving the reliability of the operation of liquid cooling pipes 3.

[0057] Furthermore, the liquid cooling pipe 3 is provided with an inlet port 31 and an outlet port 32. The inlet port 31 is used to connect the liquid cooling pipe 3 to the storage tank, so that the coolant can enter the liquid cooling pipe 3 from the storage tank through the inlet port 31 and flow in the liquid cooling pipe 3 to exchange heat with the battery. The outlet port 32 is used to connect the liquid cooling pipe 3 to the storage tank, so that the coolant after exchanging heat with the battery can flow out from the liquid cooling pipe 3 through the outlet port 32 to enter the storage tank. This enables the unidirectional circulation of the coolant, improving the reliability and efficiency of cooling the battery.

[0058] Furthermore, each liquid cooling pipe 3 is equipped with an inlet port 31 and an outlet port 32, so that the inlet port 31 and the outlet port 32 correspond one-to-one with the liquid cooling pipe 3. This allows the coolant to enter the corresponding liquid cooling pipe 3 through the inlet port 31, exchange heat with the battery in the liquid cooling pipe 3, and then flow out from the liquid cooling pipe 3 through the corresponding outlet port 32. This improves the reliability of the unidirectional flow of the coolant and ensures the reliability of heat exchange between the coolant and the battery.

[0059] It should be noted that in actual design, the water inlet 31 and the water outlet 32 ​​can be interchanged. The water inlet 31 can be used as the water outlet 32, and the water outlet 32 ​​can be used as the water inlet 31. Both methods can achieve unidirectional flow of coolant in the liquid cooling pipe 3.

[0060] In some embodiments, the liquid cooling pipe 3 further includes a first fixing member 33, and the water inlet ports 31 of the plurality of liquid cooling pipes 3 are all fixed to the base plate 2 by the first fixing member 33, and / or the liquid cooling pipe 3 further includes a second fixing member 34, and the water outlet ports 32 of the plurality of liquid cooling pipes 3 are all fixed to the base plate 2 by the second fixing member 34.

[0061] Specifically, there are multiple liquid cooling pipes 3, and each liquid cooling pipe 3 is provided with a water inlet 31. The liquid cooling pipe 3 also includes a first fixing member 33. The water inlet 31 of the multiple liquid cooling pipes 3 are all fixed to the base plate 2 by the first fixing member 33. That is, the first fixing member 33 is used to fix the water inlet 31 of the liquid cooling pipe 3 to the base plate 2, so as to connect the water inlet 31 to the liquid storage tank. It can also prevent the water inlet 31 of the liquid cooling pipe 3 from shifting due to the flow of coolant in the liquid cooling pipe 3, which would cause the water inlet 31 to disconnect from the liquid storage tank. This can ensure the reliability of coolant entering the liquid cooling pipe 3 and improve the reliability of cooling the battery. Moreover, the first fixing member 33 is used to fix the water inlet 31 of multiple liquid cooling pipes 3 at the same time, which can reduce the number of first fixing members 33 and reduce the installation cost.

[0062] Furthermore, each liquid cooling pipe 3 is equipped with a water outlet 32, and the liquid cooling pipe 3 also includes a second fixing member 34. The water outlets 32 of multiple liquid cooling pipes 3 are all fixed to the base plate 2 by the second fixing member 34. That is, the second fixing member 34 is used to fix the water outlets 32 of the liquid cooling pipes 3 to the base plate 2, so as to connect the water outlets 32 to the liquid storage tank. It can also prevent the water outlets 32 of the liquid cooling pipes 3 from shifting due to the flow of coolant in the liquid cooling pipes 3, which would cause the water outlets 32 to disconnect from the liquid storage tank. This ensures the reliability of the coolant flowing out of the liquid cooling pipes 3, that is, ensures that the coolant can flow in one direction, improving the reliability of cooling the battery. Moreover, the second fixing member 34 is used to fix the water outlets 32 of multiple liquid cooling pipes 3 at the same time, which can reduce the number of second fixing members 34 and reduce the installation cost.

[0063] In some embodiments, the water inlet ports 31 of the plurality of liquid cooling pipes 3 are all located at the same end of the base plate 2; and / or, the water outlet ports 32 of the plurality of liquid cooling pipes 3 are all located at the same end of the base plate 2; and / or, the water inlet ports 31 and the water outlet ports 32 of the plurality of liquid cooling pipes 3 are all located at the same end of the base plate 2.

[0064] Specifically, by placing the inlet ports 31 of multiple liquid cooling pipes 3 at the same end of the base plate 2, the distance between the inlet ports 31 of multiple liquid cooling pipes 3 is relatively low, so that the inlet ports 31 of multiple liquid cooling pipes 3 can be fixed at the same time by the first fixing member 33. This facilitates the simultaneous connection of the inlet ports 31 of multiple liquid cooling pipes 3 to the liquid storage tank, allowing the liquid storage tank to supply coolant to multiple liquid cooling pipes 3 at the same time. At the same time, by placing the outlet ports 32 of multiple liquid cooling pipes 3 at the same end of the base plate 2, the distance between the outlet ports 32 of multiple liquid cooling pipes 3 is relatively close, so that the outlet ports 32 of multiple liquid cooling pipes 3 can be fixed at the same time by the second fixing member 34. This facilitates the simultaneous connection of the outlet ports 32 of multiple liquid cooling pipes 3 to the liquid storage tank, allowing the coolant in multiple liquid cooling pipes 3 to flow out and enter the liquid storage tank.

[0065] Furthermore, by placing the inlet ports 31 and outlet ports 32 of multiple liquid cooling pipes 3 at the same end of the base plate 2, the inlet ports 31 and outlet ports 32 of multiple liquid cooling pipes 3 are located close to each other. This facilitates the connection of the inlet ports 31 and outlet ports 32 of multiple liquid cooling pipes 3 to the liquid storage tank, allowing the liquid storage tank to simultaneously supply coolant to multiple liquid cooling pipes 3 and enabling the coolant in multiple liquid cooling pipes 3 to flow out and enter the liquid storage tank. This improves the reliability of the unidirectional circulation of coolant, makes the structural design more compact, improves space utilization, and allows installers to operate the inlet ports 31 and outlet ports 32 separately, reducing operation steps and installation time, and facilitating maintenance and repair.

[0066] In such Figures 3-5 In the illustrated embodiment, there are two liquid cooling pipes 3, each equipped with an inlet 31 and an outlet 32. The inlet 31 and outlet 32 ​​of the two liquid cooling pipes 3 are connected to the storage tank, allowing the coolant to simultaneously enter the two liquid cooling pipes 3 from the storage tank. The coolant flows within the two liquid cooling pipes 3 to exchange heat with the battery before returning to the storage tank. This enables unidirectional circulation of the coolant, improving the reliability of cooling the battery. Furthermore, placing the inlet 31 and outlet 32 ​​of the two liquid cooling pipes 3 at the same end of the base plate 2 facilitates connection of both inlet 31 and outlet 32 ​​to the storage tank, resulting in a more compact structure and improved space utilization.

[0067] In some embodiments, the inner surface of the receiving groove 21 is sprayed with a thermal insulation coating, which is located between the base plate 2 and the liquid cooling pipe 3; and / or, the side of the liquid cooling pipe 3 facing the battery mounting cavity 1 is coated with thermally conductive structural adhesive; and / or, the side of the base plate 2 away from the battery mounting cavity 1 is sprayed with a PVC coating.

[0068] Specifically, an insulating coating is sprayed onto the inner surface of the receiving tank 21. The insulating coating is used to reduce heat exchange between the battery and the external environment, ensuring that the battery always operates within the optimal temperature range, improving the battery's safety, performance, and lifespan. The insulating coating is placed between the base plate 2 and the liquid cooling pipe 3, meaning that the insulating coating is placed on the side of the liquid cooling pipe 3 away from the battery. This avoids the cooling effect of the liquid cooling pipe 3 on the battery being reduced due to the insulating coating. The insulating coating can be aerogel or polyimide foam, etc., and it allows for a tight fit between the base plate 2, the insulating coating, and the liquid cooling pipe 3, ensuring the reliable operation of the insulating coating and further improving space utilization.

[0069] Furthermore, the liquid cooling pipe 3 is coated with thermally conductive structural adhesive, which is used to improve heat conduction efficiency. By applying the thermally conductive structural adhesive to the side of the liquid cooling pipe 3 facing the battery mounting cavity 1, the thermally conductive structural adhesive can be placed between the liquid cooling pipe 3 and the battery, thereby improving the heat conduction efficiency between the liquid cooling pipe 3 and the battery. This can further improve the efficiency of heat exchange between the coolant and the battery through the pipe wall of the liquid cooling pipe 3, effectively improving the safety and lifespan of the battery.

[0070] It should be noted that while the surface of the liquid cooling pipe 3 is coated with thermally conductive structural adhesive, the thermally conductive structural adhesive can be used to fill the gap between the receiving groove 21 and the liquid cooling pipe 3. Moreover, the thermally conductive structural adhesive has a certain degree of adhesion, which can make the liquid cooling pipe 3 and the base plate 2 integrated, further improving the overall structural strength.

[0071] Furthermore, a PVC coating is sprayed on the side of the base plate 2 away from the battery mounting cavity 1. The PVC coating has high hardness and can resist friction, scratches and mechanical impact, reducing damage to the substrate surface. By spraying the PVC coating on the side of the base plate 2 away from the battery mounting cavity 1, the PVC coating can be sprayed on the outer surface of the base plate 2 to protect the base plate 2 and reduce damage to the outer surface of the base plate 2. The PVC coating can also be used to reduce heat exchange between the battery and the external environment, further ensuring that the battery always operates within the optimal temperature range.

[0072] In some embodiments, the housing 100 further includes a side panel 4, which extends circumferentially along the housing 100 and is connected above the bottom plate 2; and / or, the bottom plate 2 is formed by stamping.

[0073] Specifically, the housing 100 is used to resist external impacts to prevent damage to the batteries installed inside the battery pack. The housing 100 also includes a side panel 4, which extends circumferentially along the housing 100 and is connected to the top of the bottom plate 2. The side panel 4 is positioned on the circumferential outside of the battery, so that the side panel 4 can protect the battery from the circumference of the battery, so as to avoid dangerous situations such as short circuits, fires or even explosions caused by the battery being squeezed, thereby improving the safety and service life of the battery. Furthermore, the side panel 4 can be connected to the bottom plate 2 as a whole, which can improve the overall structural strength and operational reliability.

[0074] The side panel 4 can be made of metal to improve the reliability of the side panel 4 in protecting the battery by taking advantage of its high strength. The bottom plate 2 and the side panel 4 can be connected by welding.

[0075] Furthermore, the base plate 2 is formed by stamping. Stamping is a processing method that uses molds and stamping equipment to apply pressure to metal or non-metal sheets, causing them to undergo plastic deformation or separation, thereby obtaining parts or components with the required shape, size and performance. Stamping has high production efficiency, high part precision and simple operation. Therefore, by using stamping to form the base plate 2, the receiving groove 21 can be stamped on the base plate 2 while processing the base plate 2, which can reduce processing steps and processing time, and is suitable for mass production.

[0076] In particular, by making the base plate 2 as a single piece, a stamped sheet metal structure can be used instead of an aluminum profile structure, which can further reduce the installation cost.

[0077] This utility model also proposes a battery pack.

[0078] The battery pack according to the present invention includes a battery pack housing 100 of any of the above embodiments. By forming a receiving groove 21 on the base plate 2 and installing the liquid cooling pipe 3 in the receiving groove 21, the space occupied by the liquid cooling pipe 3 and the base plate 2 in the height direction of the base plate 2 partially overlaps, which can reduce the space occupied by the battery pack housing 100 in the height direction, thereby reducing the space occupied by the battery pack in the height direction and facilitating the installation of the battery pack in the vehicle. Furthermore, by constructing the liquid cooling pipe 3 to extend in an S-shape, the installation length of the liquid cooling pipe 3 can be effectively increased, improving the reliability and efficiency of cooling the battery.

[0079] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0080] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A battery pack housing, characterized in that, A battery mounting cavity is formed within the battery pack housing, and the battery pack housing includes: A base plate located at the bottom of the battery mounting cavity, the base plate having a receiving groove opening toward the inside of the battery mounting cavity; A liquid cooling pipe is installed in the receiving groove and is used to exchange heat with the battery in the battery mounting cavity.

2. The battery pack housing according to claim 1, characterized in that, The base plate has a plurality of protrusions formed on the surface facing the battery mounting cavity, the plurality of protrusions defining the receiving groove.

3. The battery pack housing according to claim 2, characterized in that, The protrusion is constructed as an elongated protrusion, which extends along a first direction and is disposed on the base plate. A plurality of elongated protrusions are spaced apart on the base plate along a second direction, and the first direction intersects the second direction. And / or, the upper surface of the protrusion is formed with a support plane, which is used to support the battery.

4. The battery pack housing according to claim 3, characterized in that, The first direction is set along the length direction of the base plate, and the second direction is set along the width direction of the base plate.

5. The battery pack housing according to claim 1, characterized in that, Both the liquid cooling pipe and the receiving tank are configured to extend in at least a partial S-shape. And / or, there are multiple liquid cooling pipes, and all of the multiple liquid cooling pipes are installed in the receiving tank; And / or, each of the liquid cooling tubes is provided with an inlet and an outlet.

6. The battery pack housing according to claim 5, characterized in that, The liquid cooling pipe further includes a first fixing member, and the water inlet ports of the plurality of liquid cooling pipes are all fixed to the base plate by the first fixing member, and / or the liquid cooling pipe further includes a second fixing member, and the water outlet ports of the plurality of liquid cooling pipes are all fixed to the base plate by the second fixing member.

7. The battery pack housing according to claim 5, characterized in that, The water inlet ports of the multiple liquid cooling pipes are all located at the same end of the base plate; And / or, the water outlet ports of the plurality of liquid cooling pipes are all located at the same end of the base plate; And / or, the inlet ports and outlet ports of the plurality of liquid cooling pipes are all located at the same end of the base plate.

8. The battery pack housing according to claim 1, characterized in that, The inner surface of the receiving tank is coated with a heat-insulating coating, which is located between the bottom plate and the liquid cooling pipe. And / or, the side of the liquid cooling pipe facing the battery mounting cavity is coated with thermally conductive structural adhesive; And / or, the side of the base plate opposite to the battery mounting cavity is coated with a PVC coating.

9. The battery pack housing according to claim 1, characterized in that, The housing also includes a side panel that extends circumferentially along the housing and is connected to the top of the bottom plate; And / or, the base plate is formed by stamping.

10. A battery pack, characterized in that, The battery pack housing includes any one of claims 1-9.

Images