A battery pack with a cooling plate

Abstract

This application provides a battery pack with a cooling plate, relating to the field of new energy battery technology. The battery pack includes a battery module and a cooling device; the cooling device includes a first cooling plate and a second cooling plate disposed opposite to each other; the battery module includes a first surface and a second surface disposed opposite to each other; the first cooling plate contacts the first surface of the battery module, and the second cooling plate contacts the second surface of the battery module; the first and second cooling plates each include a cooling surface; wherein the cooling surface is disposed on the surface of the first or second cooling plate away from the battery module; the cooling surface is provided with cooling channels, which are configured to be filled with a first heat exchange medium; wherein the first heat exchange medium is configured to exchange heat with the battery module. This application improves the thermal management efficiency of the battery module through double-sided cooling of the first and second cooling plates, while ensuring structural strength, thereby improving the performance and lifespan of the battery pack.

Description

Technical Field

[0001] This application relates to the field of new energy battery technology, and more specifically, to a battery pack with a cooling plate. Background Technology

[0002] With the rapid development of new energy vehicles and other fields, battery packs, as the core power source, have received much attention for their performance and safety. On the one hand, battery packs suffer from insufficient heat dissipation performance. Traditional heat dissipation solutions are inadequate when dealing with high-energy-density, high-power charging and discharging battery modules. Furthermore, an unreasonable cooling channel layout can lead to uneven temperature distribution within the battery modules, easily causing localized overheating, affecting battery performance and lifespan, and even posing safety hazards. On the other hand, during vehicle operation, battery packs must withstand mechanical stresses such as vibration and impact. However, some existing battery packs, in pursuit of lightweighting or cost reduction, use materials with insufficient strength or have unreasonable internal structural designs, resulting in poor overall structural stability. This not only causes battery modules to shift and collide within the pack, damaging key components such as electrodes and separators, but also leads to loosening and poor contact between heat dissipation components such as cooling plates and battery modules, further affecting heat dissipation and even causing safety issues such as coolant leakage. Utility Model Content

[0003] In view of this, the purpose of this application is to provide a battery pack with a cooling plate to improve the obvious deficiencies in heat dissipation and structural strength of existing battery packs.

[0004] The battery pack includes a battery module and a cooling device; the cooling device includes a first cooling plate and a second cooling plate disposed opposite to each other; the battery module includes a first surface and a second surface disposed opposite to each other; the first cooling plate is in contact with the first surface of the battery module, and the second cooling plate is in contact with the second surface of the battery module; the first cooling plate and the second cooling plate include a cooling surface; wherein the cooling surface is disposed on the surface of the first cooling plate or the second cooling plate away from the battery module; the cooling surface is provided with a cooling channel, the cooling channel being configured to be filled with a first heat exchange medium; wherein the first heat exchange medium is configured to exchange heat with the battery module.

[0005] In the above implementation process, the battery pack is cooled from both sides by the first and second cooling plates, significantly improving the thermal management efficiency of the battery module. The cooling surface is located on the side of the cooling plate away from the battery module, facilitating processing and maintenance while protecting the battery module. The first heat exchange medium filled in the cooling channels exchanges heat with the battery module, effectively regulating the temperature. This design improves the performance and lifespan of the battery pack, enhances safety and reliability, and provides a strong guarantee for the stable operation of the battery.

[0006] Optionally, the distribution path of the cooling channel covers the projection area of ​​the battery module on the cooling surface, and the extension direction of the distribution path of the cooling channel is consistent with the arrangement direction of the battery module.

[0007] In the above implementation process, the distribution path of the cooling channels covers the projected area of ​​the battery module on the cooling surface, and its extension direction is consistent with the arrangement direction of the battery module. This ensures that the cooling channels can be precisely aligned with the heat-generating areas of the battery module, achieving efficient heat exchange. By aligning the cooling channels with the arrangement direction of the battery module, the contact area between the cooling channels and the battery module can be maximized, thereby improving cooling or heating efficiency. This layout not only helps to quickly and uniformly regulate the temperature of the battery module but also effectively avoids performance differences and safety hazards caused by uneven cooling, further improving the stability and lifespan of the battery pack.

[0008] Optionally, the cooling channels are arranged independently in sections according to the battery modules, with each battery module corresponding to an independent cooling channel, and there is no connecting structure between the cooling channels of adjacent battery modules.

[0009] In the aforementioned implementation process, each battery module has an independent cooling channel, enabling precise temperature adjustment based on the module's actual heat generation. This avoids the temperature unevenness caused by uniform cooling, thus better meeting the temperature control requirements of different battery modules under different operating conditions. The independently arranged cooling channels make the entire cooling system structure clearer and simpler, facilitating installation and debugging during production. Furthermore, in subsequent maintenance and repairs, it allows for quick identification of the specific module and its corresponding cooling channel, reducing maintenance costs and time.

[0010] Optionally, the arrangement of the independent cooling channels includes: arranging them in a closed, surrounding path.

[0011] In the aforementioned process, the closed-loop cooling channel ensures that the cooling medium is evenly distributed across the entire surface of the battery module, resulting in a more uniform cooling effect. The closed-loop cooling channel design increases the contact area and contact time between the cooling medium and the battery module, leading to more thorough heat exchange. Compared to straight-through cooling channels, the closed-loop cooling channel is structurally more stable and better resistant to the effects of mechanical vibration and thermal stress.

[0012] Optionally, the independent cooling channel includes multiple bends on the cooling surface; wherein the bends are configured to accommodate more of the first heat exchange medium than the non-bends of the cooling channel.

[0013] In the above implementation process, the bend makes the cooling channel path more tortuous, thereby increasing the contact area between the cooling channel and the battery module. This helps to distribute the cooling medium more evenly, ensuring that every area of ​​the battery module is effectively cooled and avoiding localized overheating. Because the bend accommodates more cooling medium, it can provide a greater amount of heat exchange in the same amount of time. This helps to remove the heat generated by the battery module more quickly, thereby improving overall cooling efficiency.

[0014] Optionally, the first cooling plate and the second cooling plate further include: a contact surface; a second heat exchange medium is disposed on the contact surface; wherein the second heat exchange medium is viscous; and the contact surface is connected to the first surface or the second surface of the battery module through the second heat exchange medium.

[0015] In the above implementation process, the second heat exchange medium fills the tiny gaps between the battery module surface and the contact surfaces of the cooling plates (first and second cooling plates), ensuring close contact between the two and enhancing heat conduction efficiency. This allows the heat generated by the battery module to be transferred to the cooling plates more quickly, and then dissipated through the first heat exchange medium in the cooling channels. Because the second heat exchange medium is viscous, it can firmly bond the battery module to the cooling plates, preventing loosening or detachment between the battery module and the cooling plates due to vibration or other mechanical movements during battery pack operation.

[0016] Optionally, the battery pack further includes: a battery housing; the battery housing is a closed annular structure, and the battery module is disposed in the annular space formed by the closed annular structure; the battery module is arranged in a preset direction within the battery housing.

[0017] In the above implementation process, the closed-loop battery casing can efficiently utilize space, compactly arranging the battery modules within the ring space, thereby improving the overall energy density and space utilization of the battery pack. The ring structure itself has high mechanical strength and stability, effectively resisting external impacts and vibrations, providing better protection for the battery modules. Because the battery modules are arranged along a preset direction, the cooling medium can flow more smoothly in the cooling channels, covering the surface of each battery module, thus achieving efficient heat exchange.

[0018] Optionally, the size of the battery casing matches the size of the first cooling plate and / or the second cooling plate, and the first cooling plate and the second cooling plate have the same shape and size.

[0019] In the above implementation process, the dimensions of the battery casing and the cooling plate are matched to ensure that the cooling plate can fit the internal space of the battery casing. The first and second cooling plates are identical in shape and size. This symmetrical design not only makes the internal structure of the battery pack more regular but also enhances the overall mechanical stability. The symmetrical cooling plates can provide uniform support and protection when the battery module is subjected to external forces or vibrations, reducing the risk of displacement or deformation of the battery module.

[0020] Optionally, the height of the battery casing is consistent with the distance between the first surface and the second surface of the battery module; wherein the height direction is perpendicular to the first surface and / or the second surface.

[0021] In the above implementation process, the height of the battery casing is precisely matched to the thickness of the battery module, ensuring a compact internal space. Because the height of the battery casing perfectly matches the thickness of the battery module, the battery module will not loosen or shift within the casing. The cooling medium can flow more effectively in the cooling channels, covering the upper and lower surfaces of the battery module, thereby achieving efficient heat exchange. This avoids the problems of uneven distribution or poor flow of the cooling medium caused by excessive internal space, ensuring that the battery module operates within a suitable temperature range and improving thermal management efficiency.

[0022] Optionally, the first cooling plate and / or the second cooling plate include connecting holes; the connecting holes are disposed at the edges of the first cooling plate and / or the second cooling plate; wherein the first cooling plate and / or the second cooling plate are connected and fixed to the battery casing based on the connecting holes.

[0023] In the above implementation process, the cooling plate is firmly connected to the battery casing through the connecting hole, which ensures the stable fixation of the cooling plate inside the battery pack. This effectively prevents the cooling plate from shifting or loosening due to vibration or other external forces during operation, thereby improving the mechanical stability and reliability of the entire battery pack. Attached Figure Description

[0024] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments of this application will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 A first schematic diagram of a battery pack with a cooling plate provided in an embodiment of this application;

[0026] Figure 2This is a second schematic diagram of a battery pack with a cooling plate provided in an embodiment of this application.

[0027] Icons: 1-Battery pack; 11-First cooling plate; 12-Second cooling plate; 13-Battery module; 14-Cooling channel; 15-Second heat exchange medium; 16-Battery casing. Detailed Implementation

[0028] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of the embodiments of this application.

[0029] Optionally, please refer to Figure 1 , Figure 1 This is a first schematic diagram of a battery pack with a cooling plate provided in an embodiment of this application.

[0030] This application provides a battery pack 1, which includes a battery module 13 and a cooling device. The cooling device includes a first cooling plate 11 and a second cooling plate 12 disposed opposite to each other. The battery module 13 includes a first surface and a second surface disposed opposite to each other. The first cooling plate 11 is in contact with the first surface of the battery module 13, and the second cooling plate 12 is in contact with the second surface of the battery module 13. The first cooling plate 11 and the second cooling plate 12 include a cooling surface. The cooling surface is disposed on the surface of the first cooling plate 11 or the second cooling plate 12 away from the battery module 13. The cooling surface is provided with a cooling channel 14, which is configured to be filled with a first heat exchange medium. The first heat exchange medium is configured to exchange heat with the battery module 13.

[0031] In the above implementation process, the battery module 13 is typically composed of multiple battery cells. The first surface and the second surface are two opposing surfaces of the battery module 13 in space. To increase the heat dissipation area, the first surface and the second surface are the two larger surfaces of the battery module 13. Since the battery module is usually rectangular, any two opposing surfaces have the same area. The first cooling plate 11 and the second cooling plate 12 respectively cover the first surface and the second surface of the battery module 13. A cooling channel 14 is provided on the side away from the battery module 13, which is called the cooling surface of the cooling plate (first cooling plate 11 and second cooling plate 12). The cooling channel 14 is filled with a first heat exchange medium, which is used to remove the heat generated by the battery module 13 and maintain the working performance of the battery pack 1. By adopting the structure of upper and lower double cooling plates, cooling or heating can be performed simultaneously from both surfaces of the battery module 13. Compared with the traditional single cooling plate solution, it can make more comprehensive contact with the battery module 13 and achieve more efficient heat exchange. Meanwhile, placing the cooling channel 14 on the surface of the cooling plate away from the battery module 13 not only facilitates the processing and maintenance of the cooling channel 14, but also effectively protects the battery module 13 from potential leakage problems caused by the cooling channel 14. In addition, this structure of the battery pack 1 makes more rational use of space, enabling a better thermal management system within a limited space, thereby improving the overall performance and service life of the battery pack 1.

[0032] In one embodiment of this application, both the first cooling plate 11 and the second cooling plate 12 are made of double-layer 1.5mm aluminum plates with strong welding, using friction stir welding process, and a length of 5-10mm is reserved at the welding point for welding.

[0033] Optionally, the first heat exchange medium in the cooling channel 14 may be a material with a high specific heat capacity, which can absorb more heat with less temperature change, thus helping to maintain the temperature stability of the battery pack. The first heat exchange medium may be water, ethylene glycol solution, heat transfer oil, or fluoride liquid.

[0034] Optionally, the distribution path of the cooling channel 14 covers the projection area of ​​the battery module 13 on the cooling surface, and the extension direction of the distribution path of the cooling channel 14 is consistent with the arrangement direction of the battery module 13.

[0035] In the above implementation process, the projection area is the region enclosed by the shadow cast by the outline of an object on a certain plane under light illumination. Here, in the battery pack 1, the projection area typically refers to the vertical projection area of ​​the battery module 13 on the surface of the cooling plates (first cooling plate 11 and second cooling plate 12), that is, the range of the shadow cast by the battery module 13 and its corresponding cooling plate when viewed from a vertical direction. The distribution path of the cooling channels 14 covers the projection area of ​​the battery module 13 on the cooling surface. The distribution path of the cooling channels 14 covers the projection area of ​​the battery module 13 on the cooling surface, and its extension direction is consistent with the arrangement direction of the battery modules 13, ensuring that the cooling channels 14 can be accurately aligned with the heat-generating areas of the battery module 13, achieving efficient heat exchange. The cooling channel 14 extends in a geometrically consistent manner with the spatial arrangement of the battery module 13. By making the direction of the cooling channel 14 the same as the arrangement direction of the battery module 13, the contact area between the cooling channel 14 and the battery module 13 can be maximized, thereby improving the cooling or heating efficiency. This not only helps to quickly and uniformly adjust the temperature of the battery module 13, but also effectively avoids differences in battery performance and safety hazards caused by uneven cooling, further improving the stability and service life of the battery pack 1.

[0036] Optionally, the cooling channels 14 are arranged independently in the battery modules 13, with each battery module 13 corresponding to an independent cooling channel 14, and there is no connection between the cooling channels 14 of adjacent battery modules 13.

[0037] In the above implementation process, each battery module 13 has an independent cooling channel 14, and the cooling channels 14 corresponding to each battery module 13 do not interfere with each other, which can effectively utilize space and improve efficiency. The independently arranged cooling channels 14 make the structure of the entire cooling system clearer and simpler, facilitating installation and debugging during the production process. At the same time, in subsequent maintenance and repair, it is also possible to quickly locate the specific module corresponding to the cooling channel 14 where the problem occurs, reducing maintenance costs and time.

[0038] In one embodiment of this application, temperature adjustment is performed based on the actual heat generation of the corresponding battery module 13, avoiding the problem of uneven temperature caused by uniform cooling, thereby better meeting the temperature control requirements of different battery modules 13 under different operating conditions. Independent partitioning also allows for individual adjustment of the cooling intensity of different modules according to actual needs, or the closure of corresponding cooling channels 14 when some modules do not require cooling, thereby achieving rational energy utilization and efficient system operation.

[0039] In another embodiment of this application, such as Figure 1As shown, the battery pack 1 has two battery modules 13, each with its own independent cooling channel 14. The distribution path of the cooling channel 14 covers the projection area of ​​the battery module 13 on the cooling surface, and the extension direction of the cooling channel 14 is consistent with the arrangement direction of the battery module 13. There is no connecting structure between the cooling channels 14 of adjacent battery modules 13. Under operating conditions, both cooling channels are open simultaneously for parallel heat dissipation, preventing excessive temperature differences between the two battery modules 13 and maintaining the performance of the battery pack 1.

[0040] In another embodiment of this application, the two battery modules 13 have a connection hole at the middle position of the projection area corresponding to the first cooling plate 11 and the second cooling plate 12. The connection hole is configured to press the first cooling plate 11 and the second cooling plate 12 onto the middle longitudinal beam using rivets and nuts.

[0041] Optionally, the arrangement of the independent cooling channels 14 includes: a closed, surrounding path arrangement.

[0042] In the above implementation process, the enclosed, surrounding cooling channel 14 ensures that the cooling medium is evenly distributed across the entire surface of the battery module 13, thereby achieving a more uniform cooling effect. This helps to avoid localized overheating or undercooling of the battery module 13, improving the overall performance and lifespan of the battery module 13. The enclosed, surrounding cooling channel 14 increases the contact area and contact time between the cooling medium and the battery module 13, resulting in more thorough heat exchange. This helps to remove the heat generated by the battery module 13 more quickly, thereby improving cooling efficiency.

[0043] In one embodiment of this application, the cooling channels 14 can be arranged in a serpentine path, consisting of a series of continuous bends. The bends can be arc-shaped or right-angled, allowing for the arrangement of as many cooling channels 14 as possible within a limited space, thereby increasing the heat dissipation efficiency of the first heat exchange medium and the battery module. The arc-shaped bends in the cooling channels 14 guide the fluid smoothly from one straight wall to the other, reducing violent collisions, refraction, and reflection between the fluid and the pipe wall, thus reducing energy loss. In the cooling system, the arc-shaped bends allow for more uniform distribution of the coolant throughout the channel, reducing the occurrence of localized high-temperature areas and improving the uniformity of the cooling effect. Right-angle bends, on the other hand, have a relatively simple structure, mature manufacturing process, and lower production costs. Their right-angle shape makes them more flexible in spatial arrangement, facilitating connection with other components or channels to form an integrated cooling system.

[0044] Optionally, the independent cooling channel 14 includes multiple bends on the cooling surface; wherein the bends are configured to accommodate more of the first heat exchange medium than the non-bends of the cooling channel 14.

[0045] In the above implementation process, because the bend accommodates more cooling medium, it can provide a greater amount of heat exchange in the same amount of time. This helps to remove the heat generated by the battery module 13 more quickly, thereby improving the overall cooling efficiency and ensuring that the battery module 13 remains within a safe temperature range even under high load operation. The bend makes the distribution of the cooling channels 14 on the cooling surface more compact and stable, reducing the structural stress concentration problems that may be caused by the straight arrangement of the cooling channels 14, and improving the overall mechanical strength and reliability of the cooling device.

[0046] Optionally, the first cooling plate 11 and the second cooling plate 12 further include: a contact surface; a second heat exchange medium 15 is disposed on the contact surface; wherein the second heat exchange medium is viscous; the contact surface is connected to the first surface or the second surface of the battery module 13 through the second heat exchange medium 15.

[0047] In the above implementation process, because the second heat exchange medium 15 is viscous, it can firmly bond the battery module 13 to the cooling plate, preventing the battery module 13 from loosening or detaching from the cooling plate due to vibration or other mechanical movement during the operation of the battery pack 1. The tight connection through the viscous medium reduces the relative movement between the battery module 13 and the cooling plate, lowering the risk of internal short circuits or other mechanical failures caused by mechanical vibration. This stable connection ensures continuous and effective heat conduction, improving the reliability of the entire thermal management system.

[0048] Optionally, the second heat exchange medium 15 can be a polyurethane structural adhesive, acrylic structural adhesive, silicone, epoxy structural adhesive, UV adhesive, or high-temperature resistant hot melt adhesive, etc., which can be used as a thermally conductive structural adhesive for fixing the battery module 13. It can also be reasonably filled with high thermal conductivity materials to improve the overall thermal conductivity. There are no specific restrictions on the materials.

[0049] Optionally, the battery pack 1 further includes: a battery housing 16; the battery housing 16 is a closed annular structure, and the battery module 13 is disposed in the annular space formed by the closed annular structure; the battery module 13 is arranged in a preset direction inside the battery housing 16.

[0050] In the above implementation process, the closed ring structure can effectively prevent foreign objects from entering the battery pack 1, reducing short circuits or other safety hazards caused by external factors. By placing the battery module 13 inside the battery housing 16 of the closed ring structure and arranging it along a preset direction, not only is the spatial layout and structural performance of the battery pack 1 optimized, but thermal management efficiency and safety are also significantly improved, providing strong support for the efficient operation and long-term reliability of the battery pack 1.

[0051] Optionally, please combine Figure 1 See Figure 2, Figure 2 This is a second schematic diagram of a battery pack with a cooling plate provided in an embodiment of this application. The dimensions of the battery casing 16 match the dimensions of the first cooling plate 11 and / or the second cooling plate 12, and the first cooling plate 11 and the second cooling plate 12 have the same shape and size.

[0052] In the above implementation process, the first cooling plate 11 and the second cooling plate 12 are identical in shape and size, typically rectangular or polygonal depending on their arrangement. The two cooling plates have the same dimensions or exhibit minor tolerances within the production range. This symmetrical arrangement not only makes the internal structure of the battery pack 1 more regular but also enhances the overall mechanical stability. The symmetrical cooling plates can provide uniform support and protection when the battery module 13 is subjected to external forces or vibrations, reducing the risk of displacement or deformation of the battery module 13.

[0053] Optionally, the height of the battery housing 16 is consistent with the distance between the first surface and the second surface of the battery module 13; wherein the height direction is perpendicular to the first surface and / or the second surface.

[0054] In the above implementation process, by matching the height of the battery housing 16 with the thickness of the battery module 13 and ensuring the verticality of the height direction, not only is the internal structure and space utilization of the battery pack 1 optimized, but its thermal management performance, mechanical stability and safety are also significantly improved, providing a solid guarantee for the efficient operation and long-term reliability of the battery pack 1.

[0055] Optionally, the first cooling plate 11 and / or the second cooling plate 12 include connecting holes; the connecting holes are disposed on the edges of the first cooling plate 11 and / or the second cooling plate 12; wherein the first cooling plate 11 and / or the second cooling plate 12 are connected and fixed to the battery housing 16 based on the connecting holes.

[0056] In the above implementation process, such as Figure 1 As shown, the edge refers to the boundary line of the cooling plate, which is part of the shape of the cooling plate and is related to its shape and size. The edge can be straight or curved, depending on the overall shape of the cooling plate. Multiple connection holes are arranged around the edges of the first cooling plate 11 and the second cooling plate 12, with the distance from the center of the connection hole to the edge line slightly larger than the diameter of the connection hole. The connection holes are configured to be connected and fixed to the battery housing 16 using connecting devices (such as screws and nuts). This not only enhances the stability and reliability of the cooling plates but also simplifies the installation and maintenance process, improves space utilization and system compatibility, and provides strong support for the efficient operation and long-term use of the battery pack 1.

[0057] In summary, this application provides a battery pack 1, which includes a battery module 13 and a cooling device. The cooling device includes a first cooling plate 11 and a second cooling plate 12 disposed opposite to each other. The battery module 13 includes a first surface and a second surface disposed opposite to each other. The first cooling plate 11 contacts the first surface of the battery module 13, and the second cooling plate 12 contacts the second surface of the battery module 13. The first cooling plate 11 and the second cooling plate 12 include a cooling surface. The cooling surface is disposed on the surface of the first cooling plate 11 or the second cooling plate 12 away from the battery module 13. The cooling surface is provided with a cooling channel 14, which is configured to be filled with a first heat exchange medium. The first heat exchange medium is configured to exchange heat with the battery module 13. The battery pack improves the thermal management efficiency of the battery module 13 through double-sided cooling of the first cooling plate 11 and the second cooling plate 12. The cooling channel 14 is filled with a first heat exchange medium to exchange heat with the battery module 13, thereby improving the performance and lifespan of the battery pack 1. By adding two cooling plates to battery pack 1, a battery pack 1 with improved heat dissipation design and guaranteed structural strength is obtained.

[0058] The above description is merely an embodiment of this application and is not intended to limit the scope of protection of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application. It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0059] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application.

[0060] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

Claims

1. A battery pack with cooling plates, characterized by, The battery pack with cooling plates includes: a battery module and a cooling device; the cooling device includes a first cooling plate and a second cooling plate disposed opposite to each other; the battery module includes a first surface and a second surface disposed opposite to each other; The first cooling plate is in contact with the first surface of the battery module, and the second cooling plate is in contact with the second surface of the battery module; The first cooling plate and the second cooling plate each include a cooling surface; wherein the cooling surface is disposed on the surface of the first cooling plate or the second cooling plate away from the battery module; The cooling surface is provided with cooling channels, which are configured to be filled with a first heat exchange medium; wherein the first heat exchange medium is configured to exchange heat with the battery module.

2. The battery pack with a cooling plate according to claim 1, characterized in that, in, The distribution path of the cooling channels covers the projection area of ​​the battery module on the cooling surface, and the extension direction of the distribution path of the cooling channels is consistent with the arrangement direction of the battery module.

3. The battery pack with a cooling plate according to claim 2, characterized in that, The cooling channels are arranged independently in the battery modules, with each battery module corresponding to an independent cooling channel, and there is no connection between the cooling channels of adjacent battery modules.

4. The battery pack with a cooling plate according to claim 2, characterized in that, in, The independent cooling channels can be arranged in a closed, surrounding path.

5. The battery pack with a cooling plate according to claim 2, characterized in that, The independent cooling channel includes multiple bends on the cooling surface; wherein the bends are configured to accommodate more of the first heat exchange medium than the non-bends of the cooling channel.

6. The battery pack with a cooling plate according to claim 1, characterized in that, The first cooling plate and the second cooling plate further include: a contact surface; a second heat exchange medium is disposed on the contact surface; wherein the second heat exchange medium is viscous; the contact surface is connected to the first surface or the second surface of the battery module through the second heat exchange medium.

7. The battery pack with a cooling plate according to claim 1, characterized in that, The battery pack with cooling plate further includes: a battery housing; the battery housing is a closed annular structure, and the battery module is disposed in the annular space formed by the closed annular structure; the battery module is arranged in a preset direction within the battery housing.

8. The battery pack with a cooling plate according to claim 7, characterized in that, in, The dimensions of the battery casing match the dimensions of the first cooling plate and / or the second cooling plate, and the first cooling plate and the second cooling plate have the same shape and size.

9. The battery pack with a cooling plate according to claim 8, characterized in that, The height of the battery casing is the same as the distance between the first surface and the second surface of the battery module; wherein the direction of the height is perpendicular to the first surface and / or the second surface.

10. The battery pack with a cooling plate according to claim 8, characterized in that, The first cooling plate and / or the second cooling plate include connecting holes; the connecting holes are disposed on the edges of the first cooling plate and / or the second cooling plate; wherein the first cooling plate and / or the second cooling plate are connected and fixed to the battery casing based on the connecting holes.

Images