Battery packs and vehicles

Abstract

A vehicle equipped with a battery pack. The battery pack includes a tray, cell modules, and a liquid-cooled plate. The tray includes a tray bottom plate and tray side beams, which are connected to form a storage space. The cell modules are located within the storage space and include a plurality of cells, each of which is provided with a first explosion-proof valve. The liquid-cooled plate is located between the cell modules and the tray bottom plate and is disposed on the tray bottom plate. The liquid-cooled plate has a plurality of through-holes, each of which passes through a first surface and a second surface of the liquid-cooled plate. The cell modules are in contact with the first surface, and the first explosion-proof valves of the cells face the through-holes. A first flow path is formed between the second surface of the liquid-cooled plate and the tray bottom plate. A second flow path is formed in the tray side beams, which is connected to the first flow path, so that smoke generated by the cell modules flows to the second flow path.

Description

[Technical Field]

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS This disclosure claims priority to Chinese Patent Application No. 202222704224.3, entitled "Battery Pack and Vehicle," filed on October 13, 2022. The entire contents of the above application are incorporated herein by reference.

[0002] Technical Field FIELD Embodiments of the present disclosure relate to the field of battery pack technology, and more particularly, to battery packs and vehicles. [Background technology]

[0003] A power battery system generally consists of battery modules, a battery management system (BMS), a thermal management system, and several electrical and mechanical systems. The power battery system of an electric vehicle consists of multiple battery cores. A large amount of heat generated by the power battery system during operation is concentrated in the narrow battery box. If the heat cannot be dissipated quickly in time, high temperatures will affect the lifespan of the power battery and may even cause thermal runaway.

[0004] Currently, after a thermal runaway occurs in a commercially available battery pack, the battery pack is often extinguished by the coolant in the liquid cooling plate. If the coolant is released from inside the liquid cooling plate into the battery pack, it can cause a short circuit and arc discharge in the otherwise healthy battery cores, leading to more serious consequences.

[0005] Therefore, how to properly exhaust the smoke inside the battery pack after thermal runaway occurs in the battery pack is a technical problem that needs to be urgently solved. Summary of the Invention [Problem to be solved by the invention]

[0006] The purpose of this disclosure is to provide new technical solutions for battery packs and vehicles. [Means for solving the problem]

[0007] According to a first aspect, the present disclosure provides a battery pack, the battery pack comprising: The battery pack includes a tray, a battery core module, and a liquid-cooled plate. The tray includes a tray bottom plate and tray side beams. The tray bottom plate and tray side beams are connected to form a storage space.

[0008] The battery core module is located in the accommodation space and includes a plurality of battery cores, each of which has a first explosion-proof valve.

[0009] The liquid-cooled plate is positioned between the battery core module and the tray bottom plate and is disposed on the tray bottom plate. The liquid-cooled plate has a first surface and a second surface. A plurality of through-holes are formed on the liquid-cooled plate. Each of the through-holes extends through the first surface and the second surface.

[0010] The battery core module is in contact with the first surface, and the first explosion-proof valve of the battery core faces the through hole.

[0011] A first flow passage is formed between the second surface of the liquid-cooled plate and the tray bottom plate. A second flow passage is formed in each of the tray side beams. The first flow passage communicates with the second flow passage to allow smoke generated by the battery core module to flow to the second flow passage.

[0012] Optionally, the battery core includes a battery core housing and a cover plate. The cover plate is disposed on the battery core housing. A first region and a second region are formed on the cover plate. The first region is recessed relative to the second region. A battery core terminal is provided in the first region. A first explosion-proof valve is provided in the second region.

[0013] The battery core module is placed on the liquid-cooled plate, and a clearance exists between the battery core terminal and the first surface of the liquid-cooled plate.

[0014] Optionally, a second explosion-proof valve is provided on a side of the tray side beam facing outward from the storage space, and the second flow path is in communication with the second explosion-proof valve.

[0015] Optionally, the liquid cooled plate includes an upper liquid cooled plate and a lower liquid cooled plate, the upper liquid cooled plate being connected to the lower liquid cooled plate.

[0016] The upper liquid cooling plate is in contact with the battery core module.

[0017] A plurality of spaced apart raised ribs are formed on the lower liquid-cooled plate. Grooves are formed between adjacent raised ribs. The grooves, the tray bottom plate, and the raised ribs define a first flow path.

[0018] Optionally, the tray side beam includes a first sub-side beam, a second sub-side beam, and a connecting plate. The first sub-side beam is disposed opposite the second sub-side beam. The connecting plate is disposed opposite the tray bottom plate. One end of the connecting plate is connected to the first sub-side beam. The other end of the connecting plate is connected to the second sub-side beam. The first sub-side beam, the second sub-side beam, the connecting plate, and the tray bottom plate define a second flow path.

[0019] Optionally, the first sub-side beam is positioned closer to the storage space than the second sub-side beam. An attachment gap is formed between the first sub-side beam and the tray bottom plate. A liquid-cooled plate is positioned on the tray bottom plate. An edge of the liquid-cooled plate extends through the attachment gap and is positioned within the second flow path to communicate the first flow path with the second flow path.

[0020] Optionally, the liquid cooled plate includes a liquid cooled plate body and a cold plate interface. A support is formed on the liquid cooled plate body.

[0021] A slit is formed on the tray side beam, a support extends through the slit and extends from the receiving space, and a cooling plate interface is disposed on the support.

[0022] Optionally, the first flow passage formed by the liquid-cooled plate and the tray bottom plate is disposed along a first direction of the battery pack, and the tray side beams having the second flow passage formed therein are spaced apart in the first direction of the battery pack.

[0023] Optionally, the battery pack further comprises a sealing cover, the sealing cover being disposed on the tray.

[0024] According to a second aspect, there is provided a vehicle, the vehicle including the battery pack described in the first aspect.

[0025] In an embodiment of the present disclosure, a battery pack is provided. The battery pack includes a tray, a liquid-cooled plate, and a battery core module. The liquid-cooled plate is positioned between the battery core module and the tray. A first explosion-proof valve disposed on a battery core in the battery core module faces a through-hole formed on the liquid-cooled plate. When thermal runaway occurs in the battery core, the generated high-temperature smoke is released through the corresponding through-hole into a first flow path formed by the second surface of the liquid-cooled plate and the tray bottom plate. The first flow path is configured to communicate with a second flow path, so that the generated high-temperature smoke can flow along the first flow path to the second flow path. The high-temperature smoke is released through the tray side beam, which prevents a large amount of high-temperature smoke accumulated in the battery pack from further affecting the safety of the battery pack.

[0026] Other features and advantages of the present invention will become apparent through the following detailed description of illustrative embodiments thereof, which proceeds with reference to the accompanying drawings.

[0027] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the present invention and, together with the description, serve to explain the principles of the present invention. [Brief explanation of the drawings]

[0028] [Figure 1] FIG. 2 is a schematic structural diagram showing a battery pack. [Figure 2]FIG. 2 is a schematic diagram showing an exploded structure of the battery pack. [Figure 3] FIG. 2 is a schematic structural diagram showing a battery core module disposed on a liquid-cooled plate. [Figure 4] FIG. 2 is a schematic structural diagram showing a liquid cooling plate. [Figure 5] 1 is a schematic diagram I showing a partial structure of a battery pack. [Figure 6] FIG. 2 is a schematic diagram showing a battery core. [Figure 7] 2 is a schematic diagram II showing a partial structure of a battery pack. [Explanation of symbols]

[0029] 1. Tray, 11. Tray bottom plate, 12. Tray side beam, 121. First side beam, 122. Second side beam, 123. Third side beam, 124. Fourth side beam, 1211. First sub-side beam, 1212. Second sub-side beam, 1213. Connecting plate, 1214. Mounting gap, 125. Second explosion-proof valve, 126. Slit, 2. Battery core module, 21. Battery core, 211. Battery core housing, 212. Cover plate, 213. First explosion-proof valve, 214. Battery core terminal, 3. Liquid cooling plate, 31. First surface, 32. Second surface, 33. Through-hole, 34. Upper liquid cooling plate, 35. Lower liquid cooling plate, 351. Convex rib, 352. Groove, 30. Liquid cooling plate body, 36. Cooling plate interface, 301. Support, 41. a first flow path, 42. a second flow path, and 5. Sealed cover. DETAILED DESCRIPTION OF THE INVENTION

[0030] Various exemplary embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. It should be noted that unless otherwise specified, the relative arrangement of components and steps, formulas, and numerical values ​​described in the embodiments do not limit the scope of the present disclosure.

[0031] The following description of at least one exemplary embodiment is merely exemplary in nature and is not intended to constitute any limitation on the disclosure and its application or uses.

[0032] Techniques and devices known to those skilled in the art may not be described in detail, but where appropriate, the techniques and devices shall be considered part of this specification.

[0033] In all examples shown and described herein, any particular values ​​should be construed as merely exemplary and not limiting, and thus other examples of exemplary embodiments may have different values.

[0034] It should be noted that like reference numbers and letters indicate like items in the following accompanying drawings, and therefore, once an item is defined in an accompanying drawing, that item need not be further described in subsequent accompanying drawings.

[0035] According to a first aspect of an embodiment of the present disclosure, there is provided a battery pack. As shown in Figures 1 to 7, the battery pack includes a tray 1, a battery core module 2, and a liquid-cooled plate 3.

[0036] The tray 1 includes a tray bottom plate 11 and tray side beams 12. The tray bottom plate 11 and the tray side beams 12 are connected to form a storage space.

[0037] The battery core module 2 is located in the accommodation space. The battery core module 2 includes a plurality of battery cores 21. Each of the battery cores 21 has a first explosion-proof valve 213.

[0038] The liquid-cooled plate 3 is located between the battery core modules 2 and the tray bottom plate 11 and is disposed on the tray bottom plate 11. The liquid-cooled plate 3 has a first surface 31 and a second surface 32. A plurality of through-holes 33 are formed on the liquid-cooled plate 3. Each of the through-holes 33 extends through the first surface 31 and the second surface 32.

[0039] The battery core module 2 is in contact with the first surface 31. The first explosion-proof valve 213 of the battery core 21 faces the through-hole 33.

[0040] A first flow path 41 is formed between the second surface 32 of the liquid-cooled plate 3 and the tray bottom plate 11. A second flow path 42 is formed in each of the tray side beams 12. The first flow path 41 communicates with the second flow path 42 so that smoke generated by the battery core module 2 flows into the second flow path 42.

[0041] That is, the battery pack mainly includes a tray 1, a battery core module 2, and a liquid-cooled plate 3. The tray 1 is configured to support the battery core module 2 and the liquid-cooled plate 3.

[0042] Specifically, referring to FIGS. 1 and 2, the tray 1 includes a tray bottom plate 11 and tray side beams 12. The tray bottom plate 11 and the tray side beams 12 are connected to each other to define a storage space. For example, the tray bottom plate 11 and the tray side beams 12 may be welded to each other. In this embodiment, the tray side beams 12 include a first side beam 121, a second side beam 122, a third side beam 123, and a fourth side beam 124. The first side beam 121, the second side beam 122, the third side beam 123, and the fourth side beam 124 are all connected to the tray bottom plate 11 to define the storage space.

[0043] In this embodiment, both the battery core module 2 and the liquid-cooled plate 3 are disposed within the accommodation space. The liquid-cooled plate 3 is located between the battery core module 2 and the tray bottom plate 11. Specifically, the battery core module 2 includes a plurality of battery cores 21. Each battery core 21 has a first explosion-proof valve 213. The surface of the battery core 21 on which the first explosion-proof valve 213 is provided faces the liquid-cooled plate 3. Specifically, each battery core 21 within the battery core module 2 is disposed upside down within the tray 1.

[0044] In this embodiment, the liquid-cooled plate 3 has a first surface 31 and a second surface 32. The first surface 31 is positioned facing away from the tray bottom plate 11, and the second surface 32 is positioned toward the tray bottom plate 11. Specifically, the liquid-cooled plate 3 is positioned on the tray bottom plate 11 and is located between the tray bottom plate 11 and the battery core module 2. For example, the second surface 32 of the liquid-cooled plate 3 and the tray bottom plate 11 are fixed to each other with a structural adhesive. The battery core module 2 is positioned on the first surface 31 of the liquid-cooled plate 3. For example, the battery core module 2 and the first surface 31 of the liquid-cooled plate 3 are fixed to each other with a thermally conductive structural adhesive.

[0045] In this embodiment, a through-hole 33 is formed on the liquid-cooled plate 3. The through-hole 33 extends through the first surface 31 and the second surface 32 of the liquid-cooled plate 3. Specifically, the through-hole 33 extends through the liquid-cooled plate 3 in the thickness direction of the liquid-cooled plate 3. The battery cores 21 in the battery core modules 2 are disposed on the first surface 31 of the liquid-cooled plate 3. The first explosion-proof valves 213 disposed on the battery cores 21 face the through-holes 33 of the liquid-cooled plate 3. For example, the battery core modules 2 are disposed on the liquid-cooled plate 3. The first explosion-proof valves 213 may be embedded in the through-holes 33, or may not be disposed directly on the through-holes 33, but may correspond in position to the through-holes 33. Specifically, the first explosion-proof valves 213 communicate with the through-holes 33.

[0046] In this embodiment, the first explosion-proof valve 213 arranged on the battery core 21 faces the through-hole 33 of the liquid cooling plate 3. When thermal runaway occurs in the battery core 21, high-temperature smoke generated by the battery core 21 can be released through the through-hole 33 formed on the liquid cooling plate 3.

[0047] In this embodiment, the first explosion-proof valves 213 arranged on the battery cores 21 face the through-holes 33 in the liquid-cooled plate 3. Specifically, the battery core module 2 includes multiple battery cores 21. Each battery core 21 is provided with a first explosion-proof valve 213. A plurality of through-holes 33 are formed on the liquid-cooled plate 3 to correspond to the first explosion-proof valves 213 in the battery core module 2. The first explosion-proof valves 213 correspond one-to-one to the through-holes 33. For example, referring to FIG. 2 , the battery cores 21 in the battery core module 2 are arranged in 4 rows and 15 columns. Correspondingly, 4 rows and 15 columns of through-holes 33 are also formed on the liquid-cooled plate 3. In any embodiment, mounting holes are provided near the positions of the through-holes 33. For example, the liquid-cooled plate 3 can be fixed to the tray bottom plate 11 with fasteners.

[0048] In this embodiment, the liquid-cooled plate 3 is disposed on the tray bottom plate 11. A first flow path 41 is formed between the second surface 32 of the liquid-cooled plate 3 and the tray bottom plate 11. Furthermore, in this embodiment of the present disclosure, a second flow path 42 is formed in the tray side beam 12. The first flow path 41 is configured to communicate with the second flow path 42.

[0049] Specifically, since the first explosion-proof valve 213 of the battery core 21 faces the through-hole 33 formed on the liquid-cooled plate 3, when thermal runaway occurs in the battery core 21, the generated high-temperature smoke is released through the corresponding through-hole 33 into the first flow path 41 formed by the second surface 32 of the liquid-cooled plate 3 and the tray bottom plate 11. Since the first flow path 41 is configured to communicate with the second flow path 42, the generated high-temperature smoke can flow along the first flow path 41 to the second flow path 42, and the high-temperature smoke is released through the tray side beam 12.

[0050] Therefore, this embodiment of the present disclosure provides a battery pack. The battery pack includes a tray 1, a liquid-cooled plate 3, and a battery core module 2. The liquid-cooled plate 3 is located between the battery core module 2 and the tray 1. A first explosion-proof valve 213 disposed on the battery core 21 in the battery core module 2 faces a through-hole 33 formed on the liquid-cooled plate 3. When thermal runaway occurs in the battery core 21, the generated high-temperature smoke is released through the corresponding through-hole 33 into a first flow path 41 formed by the second surface 32 of the liquid-cooled plate 3 and the tray bottom plate 11. The first flow path 41 is configured to communicate with a second flow path 42, so that the generated high-temperature smoke can flow along the first flow path 41 to the second flow path 42. The high-temperature smoke is released through the tray side beam 12, which prevents a large amount of high-temperature smoke accumulated in the battery pack from further affecting the safety of the battery pack.

[0051] In this embodiment of the present disclosure, the first flow path 41 is formed by the second surface 32 of the liquid-cooled plate 3 and the tray bottom plate 11, so that when the high-temperature smoke discharged by the battery core 21 through the first explosion-proof valve 213 is blocked outside the battery core module 2 by the liquid-cooled plate 3, the impact of the high-temperature smoke on other battery cores 21 is reduced. Furthermore, when the high-temperature smoke flows through the first flow path 41 to the second flow path 42, the high-temperature smoke is gradually cooled by the liquid-cooled plate 3 and released to the outside, which gradually reduces the damage to the battery pack caused by the high-temperature smoke and can ensure the safety of the battery pack to a certain extent.

[0052] 6, in one embodiment, the battery core 21 includes a battery core housing 211 and a cover plate 212. The cover plate 212 is disposed on the battery core housing 211. A first region and a second region are formed on the cover plate 212. The first region is recessed relative to the second region. A battery core terminal 214 is provided in the first region. A first explosion-proof valve 213 is provided in the second region.

[0053] The battery core module 2 is placed on the liquid-cooled plate 3. A clearance exists between the battery core terminal 214 and the first surface 31 of the liquid-cooled plate 3.

[0054] In this embodiment, the battery core 21 includes a battery core housing 211 and a cover plate 212. The cover plate 212 is disposed on the battery core housing 211. When the battery core module 2 is disposed on the liquid-cooled plate 3, the battery core module 2 contacts the first surface 31 of the liquid-cooled plate 3, i.e., the cover plate 212 of the battery core 21 is disposed toward the liquid-cooled plate 3 and contacts the first surface 31 of the liquid-cooled plate 3. The liquid-cooled plate 3 can cool the cover plate 212 and cool the terminals disposed on the cover plate 212.

[0055] In this embodiment, a first region and a second region are formed on the cover plate 212. The first region is recessed relative to the second region. The battery core terminal 214 is disposed in the first region, and the first explosion-proof valve 213 is disposed in the second region. Therefore, the battery core terminal 214 is disposed at a lower position than the first explosion-proof valve 213. When the battery core module 2 is disposed on the liquid-cooled plate 3 and is in contact with the first surface 31 of the liquid-cooled plate 3, a clearance exists between the battery core terminal 214 and the first surface 31 of the liquid-cooled plate 3 to prevent contact between the battery core terminal 214 and the liquid-cooled plate 3 (made of a metal material) from affecting the electrical connection of the battery core 21. For example, the occurrence of a short circuit can be avoided.

[0056] Referring to FIG. 6 , two first regions are formed on the cover plate 212. The second region is located between the two regions. A corresponding battery core terminal 214 is disposed in each first region. For example, the battery core terminals 214 include a positive terminal and a negative terminal. The positive terminal may be disposed in the first region on the right side, and the negative terminal may be disposed in the first region on the left side. Alternatively, two first regions are formed on the cover plate 212. The two first regions are disposed adjacent to each other. The second region is located on one side of the first regions. Alternatively, one first region and one second region are formed on the cover plate 212, and two battery core terminals 214 are disposed in the first regions.

[0057] In one embodiment, a second explosion-proof valve 125 is provided on the side of the tray side beam 12 facing outward from the storage space. The second flow path 42 is in communication with the second explosion-proof valve 125.

[0058] In this embodiment, a second explosion-proof valve 125 (pack explosion-proof valve) is provided in the tray side beam 12. The second explosion-proof valve 125 is arranged facing outward from the storage space. Specifically, a second flow path 42 is formed in the tray side beam 12. High-temperature smoke is released into the second flow path 42, and when the high-temperature smoke in the second flow path 42 reaches a threshold, the second explosion-proof valve 125 is opened to discharge the high-temperature smoke in the second flow path 42 to the outside of the battery pack through the second explosion-proof valve 125, thereby preventing the high-temperature smoke from affecting the battery core modules 2 in the battery pack.

[0059] 4 and 3, in one embodiment, the liquid cooled plate 3 includes an upper liquid cooled plate 34 and a lower liquid cooled plate 35. The upper liquid cooled plate 34 is connected to the lower liquid cooled plate 35.

[0060] The upper liquid cooling plate 34 is in contact with the battery core module 2 .

[0061] A plurality of convex ribs 351 are formed on the lower liquid cooling plate 35 at intervals, and grooves 352 are formed between adjacent convex ribs 351. The grooves 352, the tray bottom plate 11, and the convex ribs 351 define a first flow path 41.

[0062] In this embodiment, the liquid-cooled plate 3 includes an upper liquid-cooled plate 34 and a lower liquid-cooled plate 35. Generally, the upper liquid-cooled plate 34 is a vapor chamber, and the lower liquid-cooled plate 35 is a runner plate. The upper liquid-cooled plate 34 and the lower liquid-cooled plate 35 are connected to form the liquid-cooled plate 3. For example, the upper liquid-cooled plate 34 and the lower liquid-cooled plate 35 can be connected to each other by brazing.

[0063] Specifically, through holes 33 are provided on the liquid cooled plate 3. For example, the through holes 33 are formed in both the upper liquid cooled plate 34 and the lower liquid cooled plate 35. When the two plates are welded together, the through holes 33 formed in the upper liquid cooled plate 34 and the lower liquid cooled plate 35 correspond one-to-one.

[0064] In this embodiment, the upper liquid-cooled plate 34 is located above the lower liquid-cooled plate 35. When the liquid-cooled plate 3 is placed on the tray bottom plate 11, the battery core module 2 is in direct contact with the upper liquid-cooled plate 34. In any embodiment, the upper liquid-cooled plate 34 is a flat structure, and thus the battery core module 2 is fixed to the upper liquid-cooled plate 34.

[0065] 3 and 4 , a plurality of convex ribs 351 are formed on the lower liquid-cooled plate 35 at intervals. For example, the plurality of convex ribs 351 are formed on the lower liquid-cooled plate 35 by a method such as stamping. Adjacent convex ribs 351 are spaced apart, so that grooves 352 are formed between adjacent convex ribs 351 (relative to the convex ribs 351). When the lower liquid-cooled plate 35 is fixed to the tray bottom plate 11, the convex ribs 351 contact the tray bottom plate 11, and the grooves 352 do not contact the tray bottom plate 11. A gap is formed between the grooves 352 and the tray bottom plate 11. The gap is the first flow path 41. When thermal runaway occurs in the battery core 21, the generated high-temperature smoke can be released through the corresponding through-holes 33 into the first flow path 41 formed by the second surface 32 of the liquid-cooled plate 3 and the tray bottom plate 11 so as to cool the high-temperature smoke through the liquid-cooled plate 3.

[0066] 3 and 4 , in a specific embodiment, five sets of convex ribs are formed on the lower liquid-cooled plate 35. Each set of convex ribs includes four convex ribs 351. The convex ribs 351 are spaced apart, thereby forming grooves 352 between adjacent convex ribs 351. Adjacent sets of convex ribs are also spaced apart, thereby forming grooves 352 between adjacent sets of convex ribs. Each of the convex ribs 351 extends along the length of the tray 1. A through-hole 33 is formed in the groove 352 formed between adjacent sets of convex ribs. Therefore, the through-hole 33 can be directly connected to the first flow path 41 so that high-temperature smoke generated by the battery core module 2 can be smoothly discharged into the first flow path 41 and cooled through the liquid-cooled plate 3.

[0067] 5 and 7, in one embodiment, the tray side beam 12 includes a first sub-side beam 1211, a second sub-side beam 1212, and a connecting plate 1213. The first sub-side beam 1211 is disposed opposite the second sub-side beam 1212. The connecting plate 1213 is disposed opposite the tray bottom plate 11. One end of the connecting plate 1213 is connected to the first sub-side beam 1211. The other end of the connecting plate 1213 is connected to the second sub-side beam 1212. The first sub-side beam 1211, the second sub-side beam 1212, the connecting plate 1213, and the tray bottom plate 11 define a second flow path 42.

[0068] In this embodiment, the second flow path 42 is defined within the tray side beam 12. For example, the tray side beam 12 may be formed by a method such as stamping, so that the first sub-side beam 1211, the second sub-side beam 1212, and the connecting plate 1213 are integrally formed. The first sub-side beam 1211 and the second sub-side beam 1212 face each other and are spaced apart. The first sub-side beam 1211 and the second sub-side beam 1212 are connected via the connecting plate 1213, so that the first sub-side beam 1211, the second sub-side beam 1212, the connecting plate 1213, and the tray bottom plate 11 together define the second flow path 42.

[0069] For example, the second flow passage 42 may be formed in each of the first side beam 121, the second side beam 122, the third side beam 123, and the fourth side beam 124. Alternatively, referring to FIG. 1 , the first side beam 121 is disposed opposite the third side beam 123 in the width direction of the battery pack (i.e., the direction indicated by arrow b). The second side beam 122 is disposed opposite the third side beam 123 in the length direction of the battery pack (i.e., the direction indicated by arrow a). The second flow passage 42 may be formed on both the first side beam 121 and the third side beam 123, or the second flow passage 42 may be formed only on the second side beam 122 and the fourth side beam 124. Regardless of which side beam the second flow passage 42 is formed on, communication between the first flow passage 41 and the second flow passage 42 must be achieved. Therefore, the second flow path 42 can be selectively formed on the side beam of the tray 1 based on the arrangement direction of the first flow path 41.

[0070] In one embodiment, referring to Figures 5 and 7, the first sub-side beam 1211 is positioned closer to the storage space than the second sub-side beam 1212, and an attachment gap 1214 is formed between the first sub-side beam 1211 and the tray bottom plate 11.

[0071] The liquid-cooled plate 3 is placed on the tray bottom plate 11. The edge of the liquid-cooled plate 3 extends through the mounting gap 1214 and is located within the second flow path 42 to connect the first flow path 41 with the second flow path 42.

[0072] In this embodiment, the first sub-side beam 1211 is disposed closer to the storage space than the second sub-side beam 1212. In the height direction of the battery pack, the height dimension of the first sub-side beam 1211 is smaller than the height dimension of the second sub-side beam 1212. The second sub-side beam 1212 and the tray bottom plate 11 are connected to each other. The first sub-side beam 1211 and the tray bottom plate 11 are not connected to each other, and an attachment gap 1214 is formed between the first sub-side beam 1211 and the tray bottom plate 11.

[0073] When the liquid-cooled plate 3 is placed on the tray bottom plate 11, i.e., when the liquid-cooled plate 3 is fixed to the tray bottom plate 11, the edge of the liquid-cooled plate 3 can extend into the mounting gap 1214, and therefore the first flow path 41 formed between the liquid-cooled plate 3 and the tray bottom plate 11 is connected to the second flow path 42 formed between the tray side beams 12 so as to smoothly discharge the high-temperature smoke flowing into the first flow path 41 into the second flow path 42 and discharge the high-temperature smoke outside the battery pack.

[0074] 2, 3, and 5, the liquid-cooled plate 3 includes a liquid-cooled plate body 30 and a cooling plate interface 36. A support 301 is formed on the liquid-cooled plate body 30.

[0075] A slit 126 is formed on the tray side beam 12. The support 301 extends through the slit 126 and extends out of the receiving space. The cooling plate interface 36 is disposed on the support 301.

[0076] In this embodiment, slits 126 are formed on the tray side beams 12. The slits 126 extend through the tray side beams 12 in the length direction of the battery pack (i.e., the direction indicated by arrow a). When the liquid-cooled plate 3 is fixed to the tray bottom plate 11, the support portion 301 of the liquid-cooled plate body 30 can pass through the slits 126 and be positioned outside the battery pack. When the support portion 301 of the liquid-cooled plate body 30 is positioned outside the battery pack, a cooling plate interface 36 is disposed on the liquid-cooled plate body 30 so as to deliver coolant to the liquid-cooled plate 3.

[0077] In one embodiment, referring to Figures 1 to 5 and 7, the first flow path 41 formed by the liquid cooling plate 3 and the tray bottom plate 11 is arranged along the first direction of the battery pack, and the tray side beams 12 having the second flow path 42 formed therein are opposed to each other in the first direction of the battery pack and arranged at a distance.

[0078] In this embodiment, the extension direction of the first flow passage 41 and the relative direction of the tray side beams 12 having the second flow passages 42 formed therein are defined. The extension direction of the first flow passage 41 is the same as the relative direction of the tray side beams 12 having the second flow passages 42 formed therein. When the liquid-cooled plate 3 is placed on the tray bottom plate 11, the first flow passage 41 formed between the liquid-cooled plate 3 and the tray bottom plate 11 can directly communicate with the second flow passages 42 formed in the tray side beams 12.

[0079] 5 and 1, the first flow passage 41 formed between the liquid-cooled plate 3 and the tray bottom plate 11 is arranged along the first direction (the length direction of the battery pack) of the battery pack. Specifically, the first flow passage 41 is arranged to extend along the length direction of the battery pack. The second flow passage 42 is arranged in each of the second side beam 122 and the fourth side beam 124. The second side beam 122 and the fourth side beam 124 face each other in the length direction of the battery pack and are spaced apart from each other. When the liquid-cooled plate 3 is arranged on the tray bottom plate 11, the first flow passage 41 formed between the liquid-cooled plate 3 and the tray bottom plate 11 can directly communicate with the second flow passage 42 formed in the tray side beam 12.

[0080] 1 and 2, in one embodiment, the battery pack further includes a sealing cover 5. The sealing cover 5 is disposed on the tray 1.

[0081] In this embodiment, the battery pack further includes a sealing cover 5. The sealing cover 5 is disposed on the tray 1 and can protect the liquid cooling plate 3 and the battery core module 2 disposed inside the tray 1.

[0082] According to a second aspect, there is provided a vehicle, the vehicle including the battery pack described in the first aspect.

[0083] In this embodiment, a vehicle is provided. The vehicle may be a hybrid vehicle or an electric vehicle.

[0084] The above embodiments focus on the differences between the embodiments. The embodiments may be combined into a more optimal embodiment as long as the different optimization features of the embodiments do not conflict. For the sake of brevity, the details will not be repeated here.

[0085] Although several specific embodiments of the present disclosure have been described in detail by way of example, those skilled in the art should understand that the above examples are merely illustrative and do not limit the scope of the present disclosure. Those skilled in the art should understand that modifications can be made to the above embodiments without departing from the scope and spirit of the present disclosure. The scope of the present disclosure is defined by the appended claims.

Claims

1. A tray (1) comprising a tray bottom plate (11) and a tray side beam (12), the tray bottom plate (11) and the tray side beam (12) being connected to form a storage space; a battery core module (2) located in the storage space and including a plurality of battery cores (21), each of the battery cores (21) having a first explosion-proof valve (213); a liquid-cooled plate (3) located between the battery core module (2) and the tray bottom plate (11), disposed on the tray bottom plate (11), and having a first surface (31) and a second surface (32), wherein a plurality of through holes (33) are formed on the liquid-cooled plate (3), and each of the through holes (33) extends through the first surface (31) and the second surface (32); A battery pack comprising: The battery core module (2) is in contact with the first surface (31), and the first explosion-proof valve (213) of the battery core (21) faces the through-hole (33); a first flow path (41) is formed between the second surface (32) of the liquid-cooled plate (3) and the tray bottom plate (11), a second flow path (42) is formed in each of the tray side beams (12), and the first flow path (41) is in communication with the second flow path (42) to allow smoke generated by the battery core module (2) to flow into the second flow path (42).

2. The battery core (21) comprises a battery core housing (211) and a cover plate (212), the cover plate (212) is disposed on the battery core housing (211), a first region and a second region are formed on the cover plate (212), the first region is recessed relative to the second region, a battery core terminal (214) is provided in the first region, and the first explosion-proof valve (213) is provided in the second region; 2. The battery pack according to claim 1, wherein the battery core module (2) is disposed on the liquid-cooled plate (3), and a clearance exists between the battery core terminal (214) and the first surface (31) of the liquid-cooled plate (3).

3. 3. The battery pack according to claim 1, wherein a second explosion-proof valve is provided on a side of the tray side beam facing outward from the storage space, and the second flow path is connected to the second explosion-proof valve.

4. The liquid cooling plate (3) comprises an upper liquid cooling plate (34) and a lower liquid cooling plate (35), and the upper liquid cooling plate (34) is connected to the lower liquid cooling plate (35); The upper liquid cooling plate (34) is in contact with the battery core module (2), 4. The battery pack according to claim 1, wherein a plurality of spaced apart convex ribs (351) are formed on the lower liquid cooling plate (35), grooves (352) are formed between adjacent convex ribs (351), and the grooves (352), the tray bottom plate (11), and the convex ribs (351) define the first flow path (41).

5. 5. The battery pack according to claim 1, wherein the tray side beam (12) comprises a first sub-side beam (1211), a second sub-side beam (1212), and a connecting plate (1213), the first sub-side beam (1211) is arranged opposite the second sub-side beam (1212), the connecting plate (1213) is arranged opposite the tray bottom plate (11), one end of the connecting plate (1213) is connected to the first sub-side beam (1211), and the other end of the connecting plate (1213) is connected to the second sub-side beam (1212), and the first sub-side beam (1211), the second sub-side beam (1212), the connecting plate (1213), and the tray bottom plate (11) together define the second flow path (42).

6. The first sub-side beam (1211) is disposed closer to the storage space than the second sub-side beam (1212), and an attachment gap (1214) is formed between the first sub-side beam (1211) and the tray bottom plate (11); 6. The battery pack of claim 5, wherein the liquid-cooled plate (3) is disposed on the tray bottom plate (11), and an edge of the liquid-cooled plate (3) extends through the mounting gap (1214) and is positioned within the second flow path (42) to connect the first flow path (41) with the second flow path (42).

7. The liquid cooling plate (3) comprises a liquid cooling plate body (30) and a cooling plate interface (36), and a support portion (301) is formed on the liquid cooling plate body (30); 7. The battery pack according to claim 1, wherein a slit (126) is formed on the tray side beam (12), the support portion (301) extends through the slit (126) and extends from the accommodating space, and the cooling plate interface (36) is disposed on the support portion (301).

8. 8. The battery pack according to claim 1, wherein the first flow path (41) formed by the liquid cooling plate (3) and the tray bottom plate (11) is arranged along a first direction of the battery pack, and the tray side beams (12) having the second flow path (42) formed therein are opposed to each other in the first direction of the battery pack and arranged at an interval.

9. The battery pack according to any one of claims 1 to 8, further comprising a sealing cover (5), said sealing cover (5) being disposed on said tray (1).

10. A vehicle comprising the battery pack according to any one of claims 1 to 9.

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