The integrated structure of the base plate and battery, and the vehicle

Abstract

This disclosure relates to an integrated structure of a base plate and a battery, and a vehicle. The integrated structure includes a battery module, a front frame, and a rear frame. The battery module is disposed between the front frame and the rear frame. The battery module includes a cell assembly, an explosion-proof valve, and cell terminals. The cell terminals are located at the end of the cell assembly near the front frame, and the explosion-proof valve is located at the end of the cell assembly near the rear frame or on the rear frame. Because the cell terminals are located at the end of the cell assembly near the front frame, and the explosion-proof valve is located at the end of the cell assembly near the rear frame or on the rear frame, the cell assembly can isolate the explosion-proof valve from the high-voltage cell terminals. When the cell assembly experiences thermal runaway, and high-temperature, high-pressure electrolyte gas is ejected from the explosion-proof valve, the electrolyte gas and the cell terminals are located on opposite sides of the cell assembly, effectively preventing contact between the electrolyte gas and the cell terminals. This avoids damage to the cell terminals or triggering thermal runaway in adjacent cells.

Description

Technical Field

[0001] This disclosure relates to the field of vehicle technology, and more specifically, to an integrated structure of a base plate and a battery, and a vehicle. Background Technology

[0002] With the rapid development of the new energy vehicle market, the requirements for the energy and safety of battery packs are becoming increasingly stringent. Ensuring the safety of the battery system is receiving more and more attention, provided that sufficient energy is available to meet the driving range requirements.

[0003] In related technologies, when a battery pack experiences thermal runaway, the explosion-proof valve opens, and the electrolyte gas ejected during the process can damage high-voltage components such as the cell terminals composed of positive and negative terminals, which may very likely trigger thermal runaway in other cells, posing a certain safety hazard. Summary of the Invention

[0004] The purpose of this disclosure is to provide an integrated structure of a base plate and a battery, as well as a vehicle, to solve the technical problems existing in the related art.

[0005] To achieve the above objectives, a first aspect of this disclosure provides an integrated structure of a base plate and a battery, including a battery module, a front frame, and a rear frame. The battery module is disposed between the front frame and the rear frame. The battery module includes a cell assembly, an explosion-proof valve, and cell terminals. The cell terminals are disposed at one end of the cell assembly near the front frame, and the explosion-proof valve is disposed at one end of the cell assembly near the rear frame or on the rear frame.

[0006] Optionally, the rear frame has an exhaust area for communicating with the gas release channel of the battery cell assembly. The rear frame also has an exhaust port that connects the exhaust area to the outside atmosphere, and the explosion-proof valve is disposed in the exhaust port.

[0007] Optionally, the outer end face of the explosion-proof valve is flush with the outer end face of the rear frame on which the exhaust port is formed.

[0008] Optionally, the rear frame includes a rear frame body and a first connecting part, the first connecting part being connected to the side of the rear frame body near the front frame, the first connecting part having a first cavity inside, the first connecting part having an opening communicating with the first cavity on the side facing the front frame, the exhaust area being located within the first cavity, and the end of the battery pack facing away from the front frame being at least partially embedded within the first cavity.

[0009] Optionally, the first cavity includes an exhaust cavity and a first guide cavity that are interconnected. The exhaust cavity is located on the side of the first guide cavity away from the front frame, and the end of the battery pack away from the front frame is at least partially embedded in the first guide cavity.

[0010] Optionally, the rear frame further includes a first partition plate, which is disposed in the first cavity and divides the first cavity into the exhaust chamber and the first guide chamber arranged along the length direction of the vehicle body. The first partition plate is provided with a first connecting hole that extends along its own thickness direction. The gas release channel of the battery pack is connected to the exhaust chamber through the first connecting hole. The exhaust chamber has the exhaust area formed inside.

[0011] Optionally, the integrated structure of the base plate and the battery also includes multiple first sealing sleeves. The cell assembly includes multiple cells, and each first sealing sleeve is fitted one-to-one with the end of the corresponding cell away from the front frame. Each first sealing sleeve has a gas release through hole, and the gas release channel of the cell is connected to the exhaust area through the gas release through hole.

[0012] Optionally, the front frame includes a front frame body and a second connecting part, the second connecting part being connected to the side of the front frame body near the rear frame, the interior of the second connecting part having a second cavity, and the side of the second connecting part facing the rear frame having an opening communicating with the second cavity, and the end of the battery pack facing away from the rear frame being at least partially embedded in the second cavity.

[0013] Optionally, the second cavity includes a mounting cavity and a second guide cavity, the mounting cavity being located on the side of the second guide cavity away from the rear frame, and the end of the battery pack away from the rear frame being at least partially embedded in the second guide cavity.

[0014] Optionally, the front frame further includes a second partition, which is disposed within the second cavity and divides the second cavity into a mounting cavity and a guide cavity arranged along the length of the vehicle body.

[0015] Optionally, the integrated structure of the base plate and the battery further includes a power distribution box, which is disposed within the mounting cavity.

[0016] Optionally, the second partition is provided with a second connecting hole, and the battery cell terminals of the battery cell assembly pass through the second connecting hole and are electrically connected to the distribution box.

[0017] Optionally, the integrated structure of the base plate and the battery further includes multiple second sealing sleeves, the cell group includes multiple cells, the cell terminal includes multiple terminals, each terminal is connected to each cell in a one-to-one correspondence, each second sealing sleeve is fitted on the end of the corresponding cell away from the rear frame, and each second sealing sleeve is provided with a clearance hole for the terminal to pass through.

[0018] Optionally, the second sealing sleeve includes a sleeve body and an insulating protrusion ring protruding from the sleeve body, the insulating protrusion ring being circumferentially arranged around the clearance hole and used to be sleeved on the outer periphery of the pole post.

[0019] Optionally, the front frame further includes a cover plate, and the front frame also has an access port communicating with the mounting cavity, the cover plate being detachably sealed to the access port.

[0020] Optionally, the integrated structure of the base plate and the battery further includes a connecting frame, which includes a bottom guard plate and two oppositely arranged side plates. The two ends of the bottom guard plate are respectively connected to the front frame and the rear frame, and the two ends of each side plate are respectively connected to the front frame and the rear frame. The front frame, the rear frame, the bottom guard plate, and the side plates together enclose a battery compartment with an opening at the top, and the battery module is disposed in the battery compartment.

[0021] Optionally, the connecting frame includes an upper cover made of foam material, which covers the upper opening of the connecting frame.

[0022] Optionally, the integrated structure of the base plate and the battery further includes a cold plate, which is disposed above the bottom guard plate. The cold plate includes interconnected plate bodies and water inlet and outlet ends. One end of the plate body facing away from the water inlet and outlet ends is connected to the rear frame, and the other end of the plate body connected to the water inlet and outlet ends is connected to the front frame.

[0023] Optionally, a clearance groove matching the shape of the water inlet and outlet is formed on the front frame, the water inlet and outlet are embedded in the clearance groove, and the outer end face of the water inlet and outlet is flush with the outer wall of the front frame on which the clearance groove is formed.

[0024] A second aspect of this disclosure provides a vehicle including an integrated structure of a floor and a battery as described above.

[0025] With the above technical solution, since the cell terminals are connected to the end of the cell assembly near the front frame, and the explosion-proof valve is connected to the end of the cell assembly near the rear frame, the cell assembly can isolate the explosion-proof valve from the high-voltage cell terminals. Thus, when the cell assembly experiences thermal runaway and the high-temperature, high-pressure electrolyte gas is ejected from the explosion-proof valve, the electrolyte gas and the cell terminals are located on opposite sides of the cell assembly. Therefore, contact between the electrolyte gas and the cell terminals can be effectively avoided, thereby preventing damage to the cell terminals or triggering thermal runaway in adjacent cells.

[0026] Other features and advantages of this disclosure will be described in detail in the following detailed description section. Attached Figure Description

[0027] The accompanying drawings are provided to further illustrate the present disclosure and form part of the specification. They are used together with the following detailed description to explain the present disclosure, but do not constitute a limitation thereof. In the drawings:

[0028] Figure 1 This is an exploded view of the integrated structure of the base plate and battery provided in an exemplary embodiment of this disclosure;

[0029] Figure 2 This is an exploded view of the integrated structure of the base plate and battery from another angle, according to an exemplary embodiment of this disclosure;

[0030] Figure 3 This is a perspective view of an integrated structure of a base plate and a battery provided in an exemplary embodiment of this disclosure;

[0031] Figure 4 This is a perspective view of the integrated structure of the base plate and battery provided in an exemplary embodiment of this disclosure, cut along the length direction.

[0032] Figure 5 yes Figure 4 An enlarged schematic diagram of part A;

[0033] Figure 6 yes Figure 4 An enlarged schematic diagram of part B.

[0034] Explanation of reference numerals in the attached figures

[0035] 1-Integrated structure of base plate and battery; 10-Battery module; 11-Cell pack; 110-Cell; 111-Terminal post; 12-Explosion-proof valve; 13-Cell terminal; 20-Front frame; 21-Front frame body; 22-Second connection part; 220-Second cavity; 221-Mounting cavity; 222-Second guide cavity; 23-Second partition; 230-Second connecting hole; 24-Cover plate; 25-Inspection port; 26-Allowing groove; 30-Rear frame; 31-Exhaust area; 32-Exhaust port; 33 - Rear frame main body; 34- First connecting part; 340- First cavity; 341- Exhaust cavity; 342- First guide cavity; 35- First partition plate; 350- First connecting hole; 40- First sealing sleeve; 50- Distribution box; 60- Second sealing sleeve; 600- Clearance hole; 61- Sleeve body; 62- Insulating convex ring; 70- Connecting frame; 700- Battery compartment; 71- Bottom guard plate; 72- Side plate; 73- Top cover body; 80- Cold plate; 81- Plate body; 82- Inlet and outlet water ends; 90- Thermal conductive adhesive. Detailed Implementation

[0036] The specific embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit this disclosure.

[0037] In this disclosure, unless otherwise stated, directional terms such as "up," "down," "left," and "right" are used to indicate orientation or positional relationships only for the convenience of describing this disclosure and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or a specific orientation structure and operation, and therefore should not be construed as a limitation of this disclosure. The terms "inner" and "outer" refer to the inner and outer contours of the corresponding structures.

[0038] Additionally, for "length direction" and "width direction", please refer to [link / reference]. Figure 3 The length and width directions are shown. It should also be noted that terms such as "first" and "second" are used to distinguish one element from another and do not indicate sequence or importance. Furthermore, in the description referring to the accompanying drawings, the same reference numerals in different drawings denote the same elements.

[0039] In the description of this disclosure, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "connect," "link," and "install" 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 direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this disclosure according to the specific circumstances.

[0040] refer to Figures 1 to 6As shown, the first aspect of this disclosure provides an integrated structure 1 for a base plate and a battery, including a battery module 10, a front frame 20 and a rear frame 30. The battery module 10 is disposed between the front frame 20 and the rear frame 30. The battery module 10 includes a cell assembly 11, an explosion-proof valve 12 and a cell terminal 13. The cell terminal 13 is disposed at one end of the cell assembly 11 near the front frame 20, and the explosion-proof valve 12 is disposed at one end of the cell assembly 11 near the rear frame 30 or on the rear frame 30.

[0041] With the above technical solution, since the cell terminal 13 is located at the end of the cell assembly 11 near the front frame 20, and the explosion-proof valve 12 is located at the end of the cell assembly 11 near the rear frame 30 or on the rear frame, the cell assembly 11 can isolate the explosion-proof valve 12 from the high-voltage cell terminal 13. Thus, when the cell assembly 11 experiences thermal runaway and the high-temperature, high-pressure electrolyte gas is ejected from the explosion-proof valve 12, the electrolyte gas and the cell terminal 13 are located on opposite sides of the cell assembly 11, with a considerable distance between them. Therefore, it can effectively prevent contact between the electrolyte gas and the cell terminal 13, thereby avoiding damage to the cell terminal 13 or triggering thermal runaway of adjacent cells 110.

[0042] To further reduce or avoid damage to high-voltage components such as the cell terminals 13 or the cell assembly 11 caused by high-temperature, high-pressure electrolyte gas being discharged through the explosion-proof valve 12, such as... Figure 1 , Figures 5 to 6 As shown, in an exemplary embodiment provided in this disclosure, the rear frame 30 has an exhaust area 31, which is used to communicate with the gas release channel of the battery cell assembly 11. The rear frame 30 also has an exhaust port 32 that connects the exhaust area 31 with the outside atmosphere, and the explosion-proof valve 12 is disposed in the exhaust port 32. In this way, when the battery cell pack 11 experiences thermal runaway, the high-temperature and high-pressure gas directly enters the exhaust zone 31 through the gas release channel and is discharged into the outside atmosphere through the explosion-proof valve 12 installed in the exhaust port 32. In the above process, on the one hand, the rear frame 30 is usually more robust than the battery module 10, so integrating the explosion-proof valve 12 into the rear frame 30 can provide higher pressure resistance and impact resistance. In addition, the rear frame 30 has good heat transfer performance, and after the high-temperature and high-pressure gas enters the exhaust zone 31, it can also diffuse some of the heat directly into the air through the rear frame 30. On the other hand, setting the exhaust zone 31 on the rear frame 30 also increases the distance between it and the battery module 10, thereby reducing the risk of high-temperature and high-pressure gas directly impacting the battery pack and helping to prevent the battery pack from being damaged secondary during the gas discharge process.

[0043] Optionally, such as Figure 6As shown, the outer end face of the explosion-proof valve 12 is flush with the outer end face of the rear frame 30 where the exhaust port 32 is formed. On the one hand, the flush arrangement of the outer end face of the explosion-proof valve 12 with the outer end face of the rear frame 30 provides better aesthetics. On the other hand, it can also avoid interference or interference between the explosion-proof valve 12 and other components of the vehicle, thereby improving the stability of the explosion-proof valve 12.

[0044] Furthermore, such as Figures 1 to 4 As shown, the rear frame 30 may include a rear frame body 33 and a first connecting portion 34. The first connecting portion 34 is connected to the side of the rear frame body 33 near the front frame 20. The interior of the first connecting portion 34 has a first cavity 340. The side of the first connecting portion 34 facing the front frame 20 forms an opening communicating with the first cavity 340. The exhaust area 31 is located within the first cavity 340. The end of the battery cell assembly 11 facing away from the front frame 20 is at least partially embedded in the first cavity 340. Thus, when assembling the integrated structure 1 of the base plate and battery, the end of the battery cell assembly 11 facing away from the front frame 20 can be partially embedded in the first cavity 340 inside the first connecting portion 34 connected to the rear frame body 33. The cavity wall of the first cavity 340 can guide, support, and fix the battery cell assembly 11, thereby facilitating the installation of the battery cell assembly 11.

[0045] Furthermore, the exhaust zone 31 is also located within the first cavity 340. In this way, when the battery cell assembly 11 is embedded in the first cavity 340 and thermal runaway occurs, it is easier for high-temperature and high-pressure gas to be discharged into the outside atmosphere through the exhaust zone 31.

[0046] It should be noted that the outlet of the gas release channel of the aforementioned battery cell assembly 11 should be located at the end of the battery cell assembly 11 near the rear frame 30. In this way, after the aforementioned battery cell assembly 11 is embedded in the first cavity 340, it can be ensured that the outlet of the gas release channel of the battery cell assembly 11 is also located in the first cavity 340, so that the gas can flow directly into the exhaust zone 31 through the first connecting part 34 during the exhaust process.

[0047] To further facilitate the direct discharge of gases generated by thermal runaway of the battery cell assembly 11 into the exhaust zone 31 via the first connection portion 34, in an exemplary embodiment provided in this disclosure, such as... Figures 4 to 6As shown, the first cavity 340 includes an exhaust cavity 341 and a first guide cavity 342 that are interconnected. The exhaust cavity 341 is located on the side of the first guide cavity 342 away from the front frame 20. The end of the battery cell assembly 11 away from the front frame 20 is at least partially embedded in the first guide cavity 342. When assembling the battery cell assembly 11 with the front frame 20, the first guide cavity 342 can guide and position the battery cell assembly 11 as it enters the first guide cavity 342, thereby facilitating the rapid and accurate embedding of the battery cell assembly 11. At the same time, when the battery cell assembly 11 experiences thermal runaway, high-temperature and high-pressure gas can be discharged from the exhaust cavity 341, which is connected to the first guide cavity 342, so as to minimize interference with the battery cell assembly 11 embedded in the first guide cavity 342.

[0048] Furthermore, the rear frame 30 may also include a first partition 35, which is disposed within the first cavity 340 and divides the first cavity 340 into an exhaust chamber 341 and a first guide chamber 342 arranged along the length of the vehicle body. The first partition 35 is provided with a first connecting hole 350 extending along its own thickness direction. The gas release channel of the battery cell assembly 11 is connected to the exhaust chamber 341 through the first connecting hole 350, and an exhaust area 31 is formed inside the exhaust chamber 341. The aforementioned first partition 35 can separate the exhaust chamber 341 from the first guide chamber 342. Thus, during the process of embedding the end of the battery cell assembly 11 away from the front frame 20 into the first guide chamber 342, the first partition 35 can act as a stop and limit for the battery cell assembly 11, thereby preventing the battery cell assembly 11 from excessively intruding into the exhaust chamber 341, occupying the space of the exhaust chamber 341, and affecting the discharge of high-temperature and high-pressure gas generated when the battery cell assembly 11 experiences thermal runaway.

[0049] Alternatively, in other embodiments provided in this disclosure, the exhaust chamber 341 and the first guide chamber 342 may also be separated by a grille.

[0050] Furthermore, a first connecting hole 350 is provided on the first partition 35 to connect the gas release channel of the battery cell assembly 11 with the exhaust chamber 341. In this way, when the battery cell assembly 11 is in contact with the first partition 35, the gas can still flow into the exhaust chamber 341 through the first connecting hole 350 formed on the first partition 35.

[0051] To further facilitate gas discharge, in the embodiment where the battery cell assembly 11 includes multiple battery cells 110, the first partition 35 may have multiple first connecting holes 350. The multiple first connecting holes 350 are spaced apart along the width direction of the frame, and each first connecting hole 350 corresponds to a gas release channel of each battery cell 110. In this way, when a battery cell assembly 11 experiences thermal runaway, the battery cell 110 can discharge high-temperature and high-pressure gas through its corresponding first connecting hole 350, thereby limiting the flow path of the high-temperature and high-pressure gas to a certain extent, improving the orderliness of the exhaust process, and preventing the high-temperature and high-pressure gas from flowing towards adjacent battery cells 110, which could lead to the risk of thermal runaway of normally operating battery cells 110.

[0052] Optionally, such as Figure 6 As shown, the integrated structure 1 of the base plate and battery may further include multiple first sealing sleeves 40, and the cell assembly 11 includes multiple cells 110. Each first sealing sleeve 40 is fitted one-to-one with the end of the corresponding cell 110 away from the front frame 20. Each first sealing sleeve 40 has a gas release through hole, and the gas release channel of the cell 110 is connected to the exhaust area 31 through the gas release through hole. After the end of the cell assembly 11 away from the front frame 20 is embedded in the aforementioned first cavity 340, the first sealing sleeve 40 fitted at the end of each cell 110 can seal the spaces between adjacent cells 110 and between the cell 110 and the inner wall of the rear frame 30, thereby improving the sealing performance between the cell assembly 11 and the rear frame 30.

[0053] In this disclosure, the first sealing sleeve 40 may be made of an insulating material.

[0054] Optionally, such as Figure 2 As shown, the front frame 20 includes a front frame body 21 and a second connecting portion 22. The second connecting portion 22 is connected to the side of the front frame body 21 near the rear frame 30. The interior of the second connecting portion 22 has a second cavity 220. The side of the second connecting portion 22 facing the rear frame 30 forms an opening communicating with the second cavity 220. The end of the battery cell assembly 11 facing away from the rear frame 30 is at least partially embedded in the second cavity 220. Similarly, during the assembly of the battery cell assembly 11 with the front frame 20, the end of the battery cell assembly 11 facing away from the rear frame 30 can be embedded in the second cavity 220. In this way, the second cavity 220 can guide, position, and support the battery cell assembly 11, facilitating its assembly.

[0055] In the embodiment where the rear frame 30 includes the rear frame body 33 and the first connecting part 34, and the first connecting part 34 has a first cavity 340 inside, and the end of the battery cell assembly 11 facing away from the front frame 20 is at least partially embedded in the first cavity 340, when assembling the battery cell assembly 11, it is not necessary to measure or position the positional relationship between the battery cell assembly 11 and the front frame 20 and the rear frame 30. The front and rear ends of the battery cell assembly 11 can be respectively embedded in the front frame 20 and the rear frame 30, which can simultaneously achieve positioning and guiding functions for the battery cell assembly 11 in the front and rear directions. This improves the assembly accuracy of the battery cell assembly 11 while simplifying the assembly procedure and reducing the assembly difficulty.

[0056] The front end of the battery cell assembly 11 is the high-voltage area of ​​the battery cell 110, while the rear end of the battery cell assembly 11 is the exhaust area of ​​the battery cell 110. Both the high-voltage area and the exhaust area have certain sealing requirements. In the above solution, the front end of the battery cell assembly 11 is embedded in the second cavity 220 of the second connecting part 22, and the rear end of the battery cell assembly 11 is embedded in the first cavity 340 of the first connecting part 34. This ensures that the front and rear ends of the battery cell assembly 11 are in a relatively sealed area, guaranteeing reliable sealing of the front and rear ends of the battery cell assembly 11, overall rigidity, and overall fixation.

[0057] like Figure 1 , Figure 2 as well as Figure 4 As shown, the second cavity 220 may include a mounting cavity 221 and a second guide cavity 222. The mounting cavity 221 is located on the side of the second guide cavity 222 opposite to the rear frame 30. The end of the battery cell assembly 11 opposite to the rear frame 30 is at least partially embedded in the second guide cavity 222. During the assembly of the battery cell assembly 11, the second guide cavity 222 can position, support, and guide the battery cell assembly 11 as it enters the front frame 20, thereby improving the assembly accuracy of the battery cell assembly 11. In addition, the mounting cavity 221 can be used to install auxiliary components that cooperate with the battery cell assembly 11. On the one hand, installing the auxiliary components in the mounting cavity 221 can prevent the cables from being exposed, making it neater and more aesthetically pleasing; on the other hand, it can also prevent the auxiliary components from being interfered with or affected by external environmental factors such as dust, moisture, and mechanical damage, thereby extending their service life.

[0058] The front frame 20 also includes a second partition 23, which is disposed within the second cavity 220 and divides the second cavity 220 into a mounting cavity 221 and a guide cavity 222 arranged along the length of the vehicle body. The second partition 23, located within the second cavity 220, can stop and limit the depth of the battery cell assembly 11 within the second guide cavity 222, thereby preventing the battery cell assembly 11 from being too deep within the second guide cavity 222 and thus compressing the placement space of the distribution box 50.

[0059] This disclosure does not limit the auxiliary components installed in the distribution box 50 mentioned above. These can be any component connected to the battery cell assembly 11. For example, in one exemplary embodiment provided in this disclosure, the integrated structure 1 of the base plate and battery also includes the distribution box 50, which is disposed within the mounting cavity 221. In this way, the distribution box 50 is located in a relatively independent space, reducing the risk of accidental contact or damage to the cables connected to the battery cell assembly 11 during operation, lowering safety hazards, and also facilitating the inspection and maintenance of the distribution box 50.

[0060] Alternatively, in other embodiments provided in this disclosure, the aforementioned auxiliary components may also be a thermal management system, a safety protection module, a communication module, etc.

[0061] The integrated structure 1 of the base plate and battery also includes a power distribution box 50. The front frame 20 also includes a second partition 23. The second partition 23 is disposed in the second cavity 220 and divides the second cavity 220 into a mounting cavity 221 and a second guide cavity 222 arranged along the length of the frame. The mounting cavity 221 is located on the side of the second guide cavity 222 away from the rear frame 30. The end of the battery cell assembly 11 away from the rear frame 30 is at least partially embedded in the second guide cavity 222. The power distribution box 50 is installed in the mounting cavity 221. On the one hand, during the assembly of the battery cell assembly 11, the second guide cavity 222 can position, support and guide the battery cell assembly 11 as it enters the front frame 20, thereby improving the assembly accuracy of the battery cell assembly 11. On the other hand, the second partition 23 divides the second cavity 220 into the mounting cavity 221 and the second guide cavity 222. Thus, the second partition 23, which is located in the second cavity 220, can stop and limit the depth of the battery cell assembly 11 in the second guide cavity 222, thereby avoiding the problem of the battery cell assembly 11 being too deep in the second guide cavity 222 and squeezing the placement space of the distribution box 50.

[0062] like Figure 4 , Figure 5 As shown, a second connecting hole 230 is provided on the second partition 23. The battery cell terminals 13 of the battery cell assembly 11 pass through the second connecting hole 230 and are electrically connected to the distribution box 50. The second connecting hole 230 on the second partition 23 allows the mounting cavity 221 and the second guide cavity 222 to be in a connected state. At this time, the battery cell terminals 13 of the battery cell assembly 11 can be electrically connected to the distribution box 50 located in the mounting cavity 221 through the second connecting hole 230. Furthermore, since the electrical connection between the battery cell assembly 11 and the distribution box 50 is located inside the front frame 20, interference from external structures and factors can be further avoided between the battery cell assembly 11 and the distribution box 50.

[0063] To facilitate the simultaneous embedding of the cell terminal 13 into the second connecting hole 230 on the second partition plate 23 while the cell assembly 11 is embedded in the second guide cavity 222, the second connecting hole 230 can also be configured as multiple. The multiple second connecting holes 230 are configured one-to-one with the multiple terminals 111 of the cell terminal 13. Furthermore, since the terminals 111 protrude from the cell assembly 11, the terminals 111 pass through the second connecting hole 230 while the cell assembly 11 abuts against the second partition plate 23.

[0064] In this disclosure, such as Figure 4 As shown, the integrated structure 1 of the base plate and battery may further include multiple second sealing sleeves 60, the cell assembly 11 includes multiple cells 110, and the cell terminal 13 includes multiple terminals 111. Each terminal 111 is connected to each cell 110 in a one-to-one correspondence. Each second sealing sleeve 60 is fitted onto the end of its corresponding cell 110 away from the rear frame 30. Each second sealing sleeve 60 is provided with a clearance hole 600 for the terminal 111 to pass through. Similarly, the second sealing sleeve 60 fitted onto the end of the cell 110 can effectively seal between itself and adjacent cells 110 and between itself and the cavity wall of the second guide cavity 222 when the cell assembly 11 is embedded in the second guide cavity 222, thereby improving the overall sealing strength of the integrated structure 1 of the base plate and battery.

[0065] In addition, a clearance hole 600 is formed on the second sealing sleeve 60 for the pole post 111 of the power supply core 110 to pass through, thereby avoiding the impact of the setting of the second sealing sleeve 60 on the electrical connection between the distribution box 50 and the pole post 111.

[0066] To further improve the stability of pole piece 111, such as Figure 5 As shown, in an exemplary embodiment provided in this disclosure, the second sealing sleeve 60 may include a sleeve body 61 and an insulating protruding ring 62 protruding from the sleeve body 61. The insulating protruding ring 62 is circumferentially arranged around the clearance hole 600 and is used to sleeve the outer periphery of the pole post 111. On the one hand, the insulating protruding ring 62 sleeved on the outer periphery of the pole post 111 can shield and protect the side of the pole post 111, preventing contact between the external structure and the pole post 111. On the other hand, the insulating protruding ring 62 sleeved on the outer periphery of the pole post 111 can isolate the direct contact between the pole post 111 and the second partition 23 when the pole post 111 passes through the second connecting hole 230, thereby avoiding the problem of contact discharge or short circuit between the pole post 111 and the second partition 23.

[0067] like Figure 1 , Figure 2As shown, the front frame 20 may also include a cover plate 24, and the front frame 20 also has an inspection port 25 communicating with the mounting cavity 221. The cover plate 24 is detachably sealed to the inspection port 25. Since the cover plate 24 is detachably sealed to the inspection port 25, when it is necessary to inspect or maintain the auxiliary components in the mounting cavity 221, the cover plate 24 can be directly removed from the front frame 20. At this time, the operator can carry out the inspection and maintenance work on the auxiliary components through the inspection port 25 communicating with the mounting cavity 221.

[0068] It should be noted that, for the implementation where the auxiliary component is the distribution box 50, the cover plate 24 can be detachably covered to seal the inspection port 25, which makes it easier to quickly inspect and repair the distribution box 50 and / or the connection between the distribution box 50 and the battery cell terminal 13.

[0069] like Figures 1 to 3 As shown, the integrated structure 1 of the base plate and battery also includes a connecting frame 70. The connecting frame 70 includes a bottom guard plate 71 and two oppositely arranged side plates 72. The two ends of the bottom guard plate 71 are connected to the front frame 20 and the rear frame 30, respectively. The two ends of each side plate 72 are connected to the front frame 20 and the rear frame 30, respectively. The front frame 20, the rear frame 30, the bottom guard plate 71 and the side plates 72 together enclose a battery compartment 700 with an opening at the top. The battery module 10 is disposed in the battery compartment 700.

[0070] In addition, buffer foam can be provided on the inner side of the side plate 72. The battery frame ensures that the second sealing sleeve 60 fitted on the front end of the battery cell 110 and the first sealing sleeve 40 fitted on the rear end of the battery cell 110 achieve the sealing compression through the tooling limit and the side plate 72.

[0071] This disclosure does not limit the specific connection structure or method between the aforementioned underbody protection plate 71, side plate 72 and the front frame 20 and rear frame 30. For example, the two ends of the underbody protection plate 71 can be connected to the front frame 20 and rear frame 30 by welding, or the two ends of the underbody protection plate 71 can be connected to the front frame 20 and rear frame 30 by fasteners or snap-fit. Similarly, the connection between the side plate 72 and the front frame 20 and rear frame 30 is also the same, and this disclosure will not elaborate on it here.

[0072] To ensure the fixed installation of the foundation in the middle of the battery cell and to meet requirements such as salt spray, such as Figures 1 to 4As shown, in one embodiment provided in this disclosure, the connecting frame 70 may include an upper cover 73 made of foam material, which covers the upper opening of the connecting frame 70. Thus, during the process of sealing the upper opening of the connecting frame 70 with the upper cover 73 made of foam material, due to the adhesion effect of the foam material, the foam material can tightly adhere to the upper edge of the battery cell assembly 11, forming a physical barrier, thereby effectively preventing moisture, dust, and other contaminants from entering the interior of the battery cell assembly 11, achieving a better sealing effect.

[0073] Furthermore, because the upper cover 73 is made of foam material, when sealing the battery cell assembly 11, the flexible foam material can flow into and fill the gaps between adjacent battery cells 110. Therefore, there is no need to set up related structures for fixing and positioning the battery cells 110, which can achieve sealing and fixing of the battery cells 110, reduce redundant parts, make the whole pack lighter and more integrated, reduce the overall cost, and the battery cells 110 participate in the force transmission path of the whole pack, which can effectively disperse and transmit the externally applied force, and enhance the pressure resistance and impact resistance of the battery pack.

[0074] like Figures 1 to 4 As shown, the integrated structure 1 of the base plate and battery may also include a cold plate 80, which is disposed above the bottom guard plate 71. The cold plate 80 includes a plate body 81 and a water inlet / outlet end 82 connected to each other. The end of the plate body 81 facing away from the water inlet / outlet end 82 is connected to the rear frame 30, and the end of the plate body 81 connected to the water inlet / outlet end 82 is connected to the front frame 20. A clearance groove 26 matching the shape of the water inlet / outlet end 82 is formed on the front frame 20. The water inlet / outlet end 82 is embedded in the clearance groove 26, and the outer end face of the water inlet / outlet end 82 is flush with the outer wall of the front frame 20 where the clearance groove 26 is formed. By embedding the water inlet / outlet end 82 into the clearance groove 26 and making its outer end face flush with the outer wall of the front frame 20, the appearance of the battery pack can be kept clean and streamlined, protruding parts can be reduced, and the overall aesthetics can be improved. Furthermore, embedding the water inlet / outlet end 82 into the clearance groove 26 can also provide additional protection for the water inlet / outlet end 82, preventing damage to the water inlet / outlet end 82 due to gravel, debris, etc. during driving.

[0075] To improve the cooling and heat exchange effect of the cold plate 80 on the battery cell assembly 11, such as Figures 1 to 2 As shown, the integrated structure 1 of the base plate and battery provided in this disclosure may further include thermally conductive adhesive 90. The thermally conductive adhesive 90 is applied to the side of the cold plate 80 close to the cell assembly 11. The thermally conductive adhesive 90 has good heat transfer efficiency, which is more conducive to the transfer of heat generated by the cell assembly 11 to the cold plate 80.

[0076] A second aspect of this disclosure provides a vehicle including the above-described integrated structure 1 of the chassis and battery. This vehicle possesses all the beneficial effects of the aforementioned integrated structure 1 of the chassis and battery, which this disclosure does not limit.

[0077] The preferred embodiments of this disclosure have been described in detail above with reference to the accompanying drawings. However, this disclosure is not limited to the specific details of the above embodiments. Within the scope of the technical concept of this disclosure, various simple modifications can be made to the technical solutions of this disclosure, and these simple modifications all fall within the protection scope of this disclosure.

[0078] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, this disclosure will not describe the various possible combinations separately.

[0079] Furthermore, various different embodiments of this disclosure can be combined in any way, as long as they do not violate the spirit of this disclosure, they should also be regarded as the content disclosed in this disclosure.

Claims

1. An integrated structure of a base plate and a battery, characterized in that, The vehicle includes a battery module, a front frame, and a rear frame. The battery module is disposed between the front frame and the rear frame. The battery module includes a cell pack, an explosion-proof valve, and cell terminals. The cell terminals are disposed at one end of the cell pack near the front frame, and the explosion-proof valve is disposed at one end of the cell pack near the rear frame or on the rear frame. The rear frame has an exhaust area for communicating with the gas release channel of the battery cell assembly. The rear frame includes a rear frame body and a first connecting part. The first connecting part is connected to the side of the rear frame body near the front frame. The interior of the first connecting part has a first cavity. The side of the first connecting part facing the front frame has an opening communicating with the first cavity. The exhaust area is located in the first cavity. The end of the battery cell assembly facing away from the front frame is at least partially embedded in the first cavity.

2. The integrated structure of the base plate and the battery according to claim 1, characterized in that, The rear frame also has an exhaust port that connects the exhaust area to the outside atmosphere, and the explosion-proof valve is located inside the exhaust port.

3. The integrated structure of the base plate and the battery according to claim 2, characterized in that, The outer end face of the explosion-proof valve is flush with the outer end face of the rear frame where the exhaust port is formed.

4. The integrated structure of the base plate and the battery according to claim 1, characterized in that, The first cavity includes an exhaust cavity and a first guide cavity that are interconnected. The exhaust cavity is located on the side of the first guide cavity away from the front frame. The end of the battery pack away from the front frame is at least partially embedded in the first guide cavity.

5. The integrated structure of the base plate and the battery according to claim 4, characterized in that, The rear frame also includes a first partition, which is disposed in the first cavity and divides the first cavity into the exhaust chamber and the first guide chamber arranged along the length of the vehicle body. The first partition is provided with a first connecting hole that extends through its own thickness. The gas release channel of the battery pack is connected to the exhaust chamber through the first connecting hole. The exhaust area is formed inside the exhaust chamber.

6. The integrated structure of the base plate and the battery according to claim 1, characterized in that, The integrated structure of the base plate and the battery also includes multiple first sealing sleeves. The cell group includes multiple cells. Each first sealing sleeve is fitted one-to-one with the end of the corresponding cell away from the front frame. Each first sealing sleeve has a gas release through hole. The gas release channel of the cell is connected to the exhaust area through the gas release through hole.

7. The integrated structure of the base plate and the battery according to any one of claims 1-6, characterized in that, The front frame includes a front frame body and a second connecting part. The second connecting part is connected to the side of the front frame body near the rear frame. The interior of the second connecting part has a second cavity. The side of the second connecting part facing the rear frame has an opening communicating with the second cavity. The end of the battery pack facing away from the rear frame is at least partially embedded in the second cavity.

8. The integrated structure of the base plate and the battery according to claim 7, characterized in that, The second cavity includes a mounting cavity and a second guide cavity. The mounting cavity is located on the side of the second guide cavity away from the rear frame. The end of the battery pack away from the rear frame is at least partially embedded in the second guide cavity.

9. The integrated structure of the base plate and the battery according to claim 8, characterized in that, The front frame also includes a second partition, which is disposed in the second cavity and divides the second cavity into a mounting cavity and a guide cavity arranged along the length of the vehicle body.

10. The integrated structure of the base plate and the battery according to claim 9, characterized in that, The integrated structure of the base plate and battery also includes a power distribution box, which is disposed within the mounting cavity.

11. The integrated structure of the base plate and the battery according to claim 10, characterized in that, The second partition is provided with a second connecting hole, and the battery cell terminals of the battery cell assembly pass through the second connecting hole and are electrically connected to the distribution box.

12. The integrated structure of the base plate and the battery according to claim 7, characterized in that, The integrated structure of the base plate and the battery also includes multiple second sealing sleeves. The cell group includes multiple cells. The cell terminal includes multiple terminals. Each terminal is connected to each cell in a one-to-one correspondence. Each second sealing sleeve is fitted onto the end of the cell opposite to the rear frame. Each second sealing sleeve is provided with a clearance hole for the terminal to pass through.

13. The integrated structure of the base plate and the battery according to claim 12, characterized in that, The second sealing sleeve includes a sleeve body and an insulating protrusion ring protruding from the sleeve body. The insulating protrusion ring is arranged circumferentially around the clearance hole and is used to fit around the outer periphery of the pole post.

14. The integrated structure of the base plate and the battery according to claim 8, characterized in that, The front frame also includes a cover plate, and the front frame also has an access port communicating with the mounting cavity, the cover plate being detachably sealed to the access port.

15. The integrated structure of the base plate and the battery according to any one of claims 1-6, characterized in that, The integrated structure of the base plate and the battery also includes a connecting frame, which includes a bottom guard plate and two oppositely arranged side plates. The two ends of the bottom guard plate are respectively connected to the front frame and the rear frame, and the two ends of each side plate are respectively connected to the front frame and the rear frame. The front frame, the rear frame, the bottom guard plate and the side plates together enclose a battery compartment with an opening at the top, and the battery module is disposed in the battery compartment.

16. The integrated structure of the base plate and the battery according to claim 15, characterized in that, The connecting frame includes an upper cover made of foam material, which covers the upper opening of the connecting frame.

17. The integrated structure of the base plate and the battery according to claim 15, characterized in that, The integrated structure of the base plate and battery also includes a cold plate, which is disposed above the bottom guard plate. The cold plate includes interconnected plate bodies and water inlet and outlet ends. One end of the plate body facing away from the water inlet and outlet ends is connected to the rear frame, and the other end of the plate body connected to the water inlet and outlet ends is connected to the front frame.

18. The integrated structure of the base plate and the battery according to claim 17, characterized in that, The front frame has a clearance groove that matches the shape of the water inlet and outlet. The water inlet and outlet are embedded in the clearance groove, and the outer end face of the water inlet and outlet is flush with the outer wall of the front frame on which the clearance groove is formed.

19. A vehicle, characterized in that, An integrated structure comprising the base plate and battery as described in any one of claims 1-18.

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