Bottom plate and battery integrated structure and vehicle

Abstract

The invention relates to an integrated structure of a bottom plate and a battery and a vehicle, the integrated structure of the bottom plate and the battery comprises a battery module, a front frame and a rear frame, the battery module is arranged between the front frame and the rear frame, the battery module comprises a battery cell group, an anti-explosion valve and a battery cell terminal, and the battery cell terminal is arranged at one end, close to the front frame, of the battery cell group; and the anti-explosion valve is arranged at one end, close to the rear frame, of the battery cell group or arranged on the rear frame. As the battery cell terminal is arranged at one end, close to the front frame, of the battery cell group, and the anti-explosion valve is arranged at one end, close to the rear frame, of the battery cell group or on the rear frame, the battery cell group can play a role in isolating the anti-explosion valve from the battery cell terminal with high voltage, and when the battery cell group is subjected to thermal runaway and high-temperature and high-voltage electrolyte gas is sprayed out from the anti-explosion valve, the battery cell terminal with high voltage can be separated from the anti-explosion valve. The electrolyte gas and the battery cell terminal are respectively positioned on two sides of the battery cell group, so that the contact between the electrolyte gas and the battery cell terminal can be effectively avoided, and the problem that the battery cell terminal is damaged or adjacent battery cells are triggered to generate thermal runaway is avoided.

Description

Technical Field

[0001] The present disclosure relates to the technical field of vehicles, and in particular to an integrated structure of a floor panel and a battery, and a vehicle. Background Art

[0002] With the rapid development of the new energy vehicle market, the energy and safety requirements for battery packs are becoming increasingly higher. On the premise of sufficient energy to meet the driving range, ensuring the safety of the battery system is receiving more and more attention.

[0003] In the related technology, when thermal runaway occurs in the battery pack, the explosion-proof valve opens, and the electrolyte gas will damage high-voltage devices such as the battery cell terminals composed of positive and negative poles during the spraying process, which is very likely to cause thermal runaway in other battery cells, posing certain safety hazards. Summary of the invention

[0004] The purpose of the present disclosure is to provide an integrated structure of a floor plate and a battery and a vehicle to solve the technical problems existing in the related art.

[0005] In order to achieve the above-mentioned objectives, a first aspect of the present disclosure provides an integrated structure of a base plate and a battery, including a battery module, a front frame and a rear frame, wherein the battery module is arranged between the front frame and the rear frame, the battery module includes a battery cell group, an explosion-proof valve and a battery cell terminal, the battery cell terminal is arranged at one end of the battery cell group close to the front frame, and the explosion-proof valve is arranged at one end of the battery cell group close to the rear frame or on the rear frame.

[0006] Optionally, the rear frame has an exhaust area, the exhaust area is used to communicate with the gas release channel of the battery cell group, and the rear frame also has an exhaust port connecting the exhaust area with the outside atmosphere, and the explosion-proof valve is arranged in the exhaust port.

[0007] Optionally, an outer end surface of the explosion-proof valve is arranged flush with an outer end surface of the rear frame where the exhaust port is formed.

[0008] Optionally, the rear frame includes a rear frame body and a first connecting portion, the first connecting portion is connected to a side of the rear frame body close to the front frame, a first cavity is defined inside the first connecting portion, an opening communicating with the first cavity is formed on a side of the first connecting portion facing the front frame, the exhaust area is located in the first cavity, and an end of the battery cell group facing away from the front frame is at least partially embedded in the first cavity.

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

[0010] Optionally, the rear frame further comprises a first partition, which is arranged in the first cavity and divides the first cavity into the exhaust cavity and the first guide cavity arranged along the length direction of the vehicle body, and the first partition is provided with a first connecting hole penetrating along its own thickness direction, and the gas release channel of the battery cell group is connected with the exhaust cavity through the first connecting hole, and the exhaust area is formed inside the exhaust cavity.

[0011] Optionally, the integrated structure of the base plate and the battery further includes a plurality of first sealing sleeves, the battery cell group includes a plurality of battery cells, each of the first sealing sleeves is correspondingly sleeved on an end of the corresponding battery cell facing away from the front frame, each of the first sealing sleeves has a gas release through hole, and the gas release channel of the battery 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 portion, the second connecting portion is connected to a side of the front frame body close to the rear frame, the second connecting portion has a second cavity inside, an opening communicating with the second cavity is formed on a side of the second connecting portion facing the rear frame, and an end of the battery cell group facing away from the rear frame is at least partially embedded in the second cavity.

[0013] Optionally, the second cavity includes an installation cavity and a second guide cavity, the installation cavity is located on a side of the second guide cavity away from the rear frame, and an end of the battery cell group away from the rear frame is at least partially embedded in the second guide cavity.

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

[0015] Optionally, the integrated structure of the base plate and the battery further includes a distribution box, and the distribution box is arranged in the installation cavity.

[0016] Optionally, a second connecting hole is provided on the second partition, and the cell terminals of the cell group are inserted into 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 a plurality of second sealing sleeves, the battery cell group includes a plurality of battery cells, the battery cell terminals include a plurality of poles, each pole is connected to each battery cell in a one-to-one correspondence, each second sealing sleeve is one-to-one correspondingly sleeved on the end of the corresponding battery cell away from the rear frame, and each second sealing sleeve is provided with an avoidance hole for the pole to pass through.

[0018] Optionally, the second sealing sleeve comprises a sleeve body and an insulating protruding ring protruding from the sleeve body, wherein the insulating protruding ring is arranged around the circumference of the avoidance hole and is used to be sleeved on the outer circumference of the pole.

[0019] Optionally, the front frame further includes a cover plate, and the front frame further has an inspection opening communicated with the installation cavity, and the cover plate is detachably sealed on the inspection opening.

[0020] Optionally, the integrated structure of the bottom 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, 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 on the top, and the battery module is arranged in the battery compartment.

[0021] Optionally, the connecting frame includes an upper cover body, which is made of a foam material and seals an upper opening of the connecting frame.

[0022] Optionally, the integrated structure of the base plate and the battery also includes a cold plate, which is arranged above the bottom guard plate. The cold plate includes a plate body and water inlet and outlet ends that are connected to each other, an end of the plate body that is away from the water inlet and outlet ends is connected to the rear frame, and an end of the plate body that is connected to the water inlet and outlet ends is connected to the front frame.

[0023] Optionally, a avoidance 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 avoidance groove, and the outer end surface of the water inlet and outlet is flush with the outer wall of the front frame formed with the avoidance groove.

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

[0025] Through the above technical solution, since the battery cell terminals are connected to the end of the battery cell group close to the front frame, and the explosion-proof valve is connected to the end of the battery cell group close to the rear frame, that is to say, the battery cell group can isolate the explosion-proof valve from the battery cell terminals with high voltage. In this way, when thermal runaway occurs in the battery cell group and high-temperature and high-pressure electrolyte gas is ejected from the explosion-proof valve, the electrolyte gas and the battery cell terminals are respectively located on both sides of the battery cell group, so that the contact between the electrolyte gas and the battery cell terminals can be effectively avoided, thereby avoiding damage to the battery cell terminals or triggering thermal runaway of adjacent batteries.

[0026] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings: Figure 1 is an exploded schematic diagram of an integrated structure of a base plate and a battery provided by an exemplary embodiment of the present disclosure; Figure 2 is an exploded schematic diagram of an integrated structure of a base plate and a battery at another angle provided by an exemplary embodiment of the present disclosure; Figure 3 is a perspective view of an integrated structure of a base plate and a battery provided by an exemplary embodiment of the present disclosure; Figure 4 is a perspective view of an integrated structure of a base plate and a battery provided by an exemplary embodiment of the present disclosure, cut along the length direction; Figure 5 yes Figure 4 An enlarged schematic diagram of part A; Figure 6 yes Figure 4 An enlarged schematic diagram of part B.

[0028] Description of Reference Numerals 1-integrated structure of bottom plate and battery; 10-battery module; 11-cell group; 110-cell; 111-pole; 12-explosion-proof valve; 13-cell terminal; 20-front frame; 21-front frame body; 22-second connecting part; 220-second cavity; 221-installation cavity; 222-second guide cavity; 23-second partition; 230-second communication hole; 24-cover plate; 25-inspection port; 26-avoidance groove; 30-rear frame; 31-exhaust area; 32-exhaust port; 33 -rear frame body; 34-first connecting part; 340-first cavity; 341-exhaust cavity; 342-first guide cavity; 35-first partition; 350-first connecting hole; 40-first sealing sleeve; 50-distribution box; 60-second sealing sleeve; 600-avoidance hole; 61-sleeve body; 62-insulating convex ring; 70-connecting frame; 700-battery compartment; 71-bottom guard plate; 72-side plate; 73-upper cover; 80-cold plate; 81-plate body; 82-water inlet and outlet; 90-thermal conductive adhesive. DETAILED DESCRIPTION

[0029] The specific implementation of the present disclosure is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the present disclosure, and is not used to limit the present disclosure.

[0030] In the present disclosure, unless otherwise stated, the directional words such as "up", "down", "left", "right", etc. used to indicate directions or positional relationships are only for the convenience of describing the present disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, and a specific orientation structure and operation. Therefore, it cannot be understood as a limitation on the present disclosure. The terms "inside and outside" refer to the inside and outside of the corresponding structural contour.

[0031] In addition, "length direction" and "width direction" can be found in Figure 3 In addition, it should be noted that the terms used, such as "first", "second", etc., are used to distinguish one element from another element and do not have order or importance. In addition, in the description with reference to the drawings, the same mark in different drawings represents the same element.

[0032] In the description of the present disclosure, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "connect", "connected", and "installed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present disclosure can be understood according to specific circumstances.

[0033] refer to Figures 1 to 6As shown, the first aspect of the present disclosure provides an integrated structure 1 of a base plate and a battery, including a battery module 10, a front frame 20 and a rear frame 30, wherein the battery module 10 is arranged between the front frame 20 and the rear frame 30, and the battery module 10 includes a battery cell group 11, an explosion-proof valve 12 and a battery cell terminal 13, wherein the battery cell terminal 13 is arranged at one end of the battery cell group 11 close to the front frame 20, and the explosion-proof valve 12 is arranged at one end of the battery cell group 11 close to the rear frame 30 or on the rear frame 30.

[0034] Through the above technical solution, since the battery cell terminal 13 is arranged at one end of the battery cell group 11 close to the front frame 20, and the explosion-proof valve 12 is arranged at one end of the battery cell group 11 close to the rear frame 30 or on the rear frame, that is to say, the battery cell group 11 can isolate the explosion-proof valve 12 from the battery cell terminal 13 with high voltage. In this way, when thermal runaway occurs in the battery cell group 11 and high-temperature and high-pressure electrolyte gas is ejected from the explosion-proof valve 12, the electrolyte gas and the battery cell terminal 13 are respectively located on both sides of the battery cell group 11 and have a long distance. Therefore, the contact between the electrolyte gas and the battery cell terminal 13 can be effectively avoided, thereby avoiding damage to the battery cell terminal 13 or triggering the problem of thermal runaway of the adjacent battery cell 110.

[0035] In order to further reduce or avoid the problem that the high-temperature and high-pressure electrolyte gas is damaged to the high-voltage components such as the cell terminal 13 or the cell group 11 when it is discharged through the explosion-proof valve 12, as shown in FIG. Figure 1 , Figures 5 and 6 As shown, in an exemplary embodiment provided by the present disclosure, the rear frame 30 has an exhaust area 31, and the exhaust area 31 is used to communicate with the gas release channel of the battery cell group 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 arranged in the exhaust port 32. In this way, when thermal runaway occurs in the battery cell group 11, the high-temperature and high-pressure gas directly enters the exhaust area 31 through the gas release channel, and is discharged to the outside atmosphere through the explosion-proof valve 12 arranged in the exhaust port 32. In the above process, on the one hand, the rear frame 30 is usually stronger than the battery module 10, so integrating the explosion-proof valve 12 on the rear frame 30 can provide higher pressure resistance and impact resistance, and the rear frame 30 has good heat transfer performance. After the high-temperature and high-pressure gas enters the exhaust area 31, part of the heat can be directly diffused into the air through the rear frame 30; on the other hand, arranging the exhaust area 31 on the rear frame 30 also increases the distance between the exhaust area 31 and the battery module 10, thereby reducing the risk of high-temperature and high-pressure gas directly impacting the battery pack, which helps to prevent the battery pack from being damaged secondary during the gas discharge process.

[0036] Alternatively, if Figure 6As shown, the outer end surface of the explosion-proof valve 12 is arranged flush with the outer end surface of the rear frame 30 formed with the exhaust port 32. On the one hand, the outer end surface of the explosion-proof valve 12 is arranged flush with the outer end surface of the rear frame 30, which has a better appearance. On the other hand, it can also avoid the problem of 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.

[0037] Furthermore, if Figures 1 to 4 As shown, the rear frame 30 may include a rear frame body 33 and a first connection portion 34. The first connection portion 34 is connected to a side of the rear frame body 33 close to the front frame 20. The first connection portion 34 has a first cavity 340 inside. The first connection portion 34 has an opening communicating with the first cavity 340 formed on a side facing the front frame 20. The exhaust area 31 is located in the first cavity 340. The end of the battery cell group 11 away from the front frame 20 is at least partially embedded in the first cavity 340. In this way, when assembling the above-mentioned integrated structure 1 of the bottom plate and the battery, the end of the battery cell group 11 away from the front frame 20 can be partially embedded in the first cavity 340 inside the first connection 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 group 11, thereby making it easier to install the battery cell group 11.

[0038] Furthermore, the exhaust area 31 is also located in the first cavity 340 . Thus, when the battery cell group 11 is embedded in the first cavity 340 and thermal runaway occurs in the battery cell group 11 , it is easier for the high-temperature and high-pressure gas to be discharged into the outside atmosphere through the exhaust area 31 .

[0039] It should be noted that the outlet of the gas release channel of the above-mentioned battery cell group 11 should be set at one end of the battery cell group 11 close to the rear frame 30. In this way, after the above-mentioned battery cell group 11 is embedded in the first cavity 340, it can be ensured that the outlet of the gas release channel of the battery cell group 11 is also located in the first cavity 340, so that the gas can directly flow into the exhaust area 31 through the first connecting portion 34 during the exhaust process.

[0040] In order to further facilitate the gas generated by thermal runaway of the battery cell group 11 to be directly discharged into the exhaust area 31 through the first connecting portion 34, in an exemplary embodiment provided by the present disclosure, as Figures 4 to 6As shown, the first cavity 340 includes an exhaust cavity 341 and a first guide cavity 342 which are interconnected. The exhaust cavity 341 is located on the side of the first guide cavity 342 away from the front frame 20, and the end of the battery cell group 11 away from the front frame 20 is at least partially embedded in the first guide cavity 342. When the battery cell group 11 and the front frame 20 are assembled, the first guide cavity 342 can guide and position the battery cell group 11 entering the first guide cavity 342, so as to facilitate the rapid and accurate embedding of the battery cell group 11. At the same time, when the battery cell group 11 has 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 the interference with the battery cell group 11 embedded in the first guide cavity 342.

[0041] Further, the rear frame 30 may also include a first partition 35, which is disposed in the first cavity 340 and divides the first cavity 340 into an exhaust cavity 341 and a first guide cavity 342 arranged along the length direction of the vehicle body. The first partition 35 is provided with a first connecting hole 350 penetrating along its own thickness direction. The gas release channel of the battery cell group 11 is connected with the exhaust cavity 341 through the first connecting hole 350, and the exhaust cavity 341 forms an exhaust area 31 inside. The provision of the above-mentioned first partition 35 can separate the exhaust cavity 341 from the first guide cavity 342. In this way, in the process of embedding the end of the battery cell group 11 away from the front frame 20 in the first guide cavity 342, the first partition 35 can play a role of stopping and limiting the battery cell group 11, thereby preventing the battery cell group 11 from invading too much into the exhaust cavity 341, occupying the space of the exhaust cavity 341, and affecting the discharge of high-temperature and high-pressure gas generated when the battery cell group 11 has thermal runaway.

[0042] Alternatively, in other embodiments provided in the present disclosure, the exhaust cavity 341 and the first guide cavity 342 may also be separated by a grille.

[0043] In addition, a first connecting hole 350 is provided on the first partition 35 to connect the gas release channel of the battery cell group 11 and the exhaust chamber 341. In this way, when the battery cell group 11 hits 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.

[0044] To further facilitate the discharge of gas, for an embodiment in which the battery cell group 11 includes multiple battery cells 110, a plurality of first connecting holes 350 may be formed on the above-mentioned first partition plate 35, and the plurality of first connecting holes 350 are arranged at intervals along the width direction of the frame, and each first connecting hole 350 is arranged in a one-to-one correspondence with the gas release channel of each battery cell 110. In this way, when a battery cell group 11 has thermal runaway, the battery cell 110 can discharge high-temperature and high-pressure gas through the first connecting hole 350 corresponding thereto, 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 toward the adjacent battery cell 110, resulting in the risk of thermal runaway of the normally operating battery cell 110.

[0045] Alternatively, if Figure 6 As shown, the integrated structure 1 of the bottom plate and the battery may further include a plurality of first sealing sleeves 40, the battery cell group 11 includes a plurality of battery cells 110, each first sealing sleeve 40 is sleeved one by one on the end of the corresponding battery 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 battery cell 110 is connected to the exhaust area 31 through the gas release through hole. After the end of the battery cell group 11 away from the front frame 20 is embedded in the first cavity 340, the first sealing sleeve 40 sleeved on the end of each battery cell 110 can play a sealing role between adjacent battery cells 110 and between the battery cell 110 and the inner wall of the rear frame 30, thereby improving the sealing performance between the battery cell group 11 and the rear frame 30.

[0046] In the present disclosure, the first sealing sleeve 40 may be made of insulating material.

[0047] Alternatively, if Figure 2 As shown, the front frame 20 includes a front frame body 21 and a second connection portion 22. The second connection portion 22 is connected to a side of the front frame body 21 close to the rear frame 30. The second connection portion 22 has a second cavity 220 inside. The second connection portion 22 has an opening communicating with the second cavity 220 formed on a side facing the rear frame 30. The end of the battery cell group 11 away from the rear frame 30 is at least partially embedded in the second cavity 220. Similarly, during the assembly of the battery cell group 11 and the front frame 20, the end of the battery cell group 11 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 group 11, so as to facilitate the assembly of the battery cell group 11.

[0048] Here, for the embodiment in which the rear frame 30 includes a rear frame body 33 and a first connecting portion 34, the first connecting portion 34 has a first cavity 340 inside, and the end of the battery cell group 11 away from the front frame 20 is at least partially embedded in the first cavity 340, when assembling the battery cell group 11, there is no need to measure and locate the positional relationship between the battery cell group 11 and the front frame 20 and the rear frame 30. The front and rear ends of the battery cell group 11 can be respectively embedded in the front frame 20 and the rear frame 30, so that the battery cell group 11 can be positioned and guided in the front and rear directions at the same time, thereby improving the assembly accuracy of the battery cell group 11 while simplifying the assembly procedure and assembly difficulty.

[0049] The front end of the battery cell group 11 is the high-voltage area of ​​the battery cell 110, and the rear end of the battery cell group 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 scheme, it is precisely because the front end of the battery cell group 11 is embedded in the second cavity 220 of the second connecting part 22, and it is precisely because the rear end of the battery cell group 11 is embedded in the first cavity 340 of the first connecting part 34, so that the front end and the rear end of the battery cell group 11 are both in a relatively sealed area, ensuring the reliable sealing of the front and rear ends of the battery cell group 11, the rigidity of the whole package, and the fixation of the whole package.

[0050] like Figure 1 , Figure 2 as well as Figure 4 As shown, the second cavity 220 may include an installation cavity 221 and a second guide cavity 222. The installation cavity 221 is located on the side of the second guide cavity 222 away from the rear frame 30, and the end of the battery cell group 11 away from the rear frame 30 is at least partially embedded in the second guide cavity 222. During the assembly process of the battery cell group 11, the second guide cavity 222 can play a role in positioning, supporting and guiding the battery cell group 11 to enter the front frame 20, thereby improving the assembly accuracy of the battery cell group 11. In addition, the installation cavity 221 can be used to install auxiliary components for matching with the battery cell group 11. On the one hand, the auxiliary components are installed in the installation cavity 221, which can prevent the cables from being exposed to the outside, making it more neat and beautiful; on the other hand, it can also prevent the auxiliary components from being disturbed or interfered by the external environment such as dust, moisture, mechanical damage, etc., thereby extending the service life.

[0051] The front frame 20 further includes a second partition 23, which 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 direction of the vehicle body. The second partition 23 disposed in the second cavity 220 can stop and limit the depth of the battery cell group 11 in the second guide cavity 222, thereby avoiding the problem that the battery cell group 11 is too deep in the second guide cavity 222 and squeezes the placement space of the distribution box 50.

[0052] The present disclosure does not limit the auxiliary components installed in the distribution box 50 mentioned above, and can be any components that are connected and assembled with the battery pack 11. For example, in an exemplary embodiment provided by the present disclosure, the integrated structure 1 of the bottom plate and the battery also includes a distribution box 50, and the distribution box 50 is arranged in the installation cavity 221. In this way, the distribution box 50 is in a relatively independent space, which reduces the risk of the cables connected to the battery pack 11 being accidentally touched or damaged during operation, reduces safety hazards, and is more convenient for the inspection and maintenance of the distribution box 50.

[0053] Alternatively, in other embodiments provided in the present disclosure, the auxiliary components may also be a thermal management system, a safety protection module, a communication module, etc.

[0054] The integrated structure 1 of the base plate and the battery also includes a distribution box 50, and the front frame 20 also includes a second partition 23, which is arranged in the second cavity 220 and divides the second cavity 220 into an installation cavity 221 and a second guide cavity 222 arranged along the length direction of the frame. The installation cavity 221 is located on the side of the second guide cavity 222 away from the rear frame 30, and the end of the battery cell group 11 away from the rear frame 30 is at least partially embedded in the second guide cavity 222, and the distribution box 50 is installed in the installation cavity 221. On the one hand, during the assembly of the battery cell group 11, the second guide cavity 222 can position, support and guide the battery cell group 11 entering the front frame 20, thereby improving the assembly accuracy of the battery cell group 11. On the other hand, the second partition 23 divides the second cavity 220 into the installation cavity 221 and the second guide cavity 222. In this way, the second partition 23 arranged in the second cavity 220 can stop and limit the depth of the battery cell group 11 in the second guide cavity 222, thereby avoiding the problem that the depth of the battery cell group 11 in the second guide cavity 222 is too large and squeezes the placement space of the distribution box 50.

[0055] like Figure 4 , Figure 5 As shown, the second partition plate 23 is provided with a second connecting hole 230, and the cell terminal 13 of the cell group 11 is inserted into the second connecting hole 230 and electrically connected to the distribution box 50. The second connecting hole 230 is provided on the second partition plate 23, so that the installation cavity 221 and the second guide cavity 222 can be in a connected state, and at this time, the cell terminal 13 of the cell group 11 can be electrically connected to the distribution box 50 arranged in the installation cavity 221 through the second connecting hole 230. In addition, since the electrical connection between the cell group 11 and the distribution box 50 is located inside the front frame 20, it can further prevent the cell group 11 and the distribution box 50 from being interfered by external structures and factors.

[0056] In order to facilitate the cell terminal 13 to be embedded in the second guide cavity 222 while the cell group 11 is embedded in the second connecting hole 230 on the second partition 23, the second connecting hole 230 can also be set to multiple, and the multiple second connecting holes 230 are arranged in a one-to-one correspondence with the multiple poles 111 of the cell terminal 13, and because the pole 111 is protruding from the cell group 11, in this way, when the cell group 11 is in contact with the second partition 23, the pole 111 is passed through the second connecting hole 230.

[0057] In this disclosure, Figure 4 As shown, the integrated structure 1 of the bottom plate and the battery may also include a plurality of second sealing sleeves 60, the battery cell group 11 includes a plurality of battery cells 110, the battery cell terminal 13 includes a plurality of poles 111, each pole 111 is connected to each battery cell 110 in a one-to-one correspondence, each second sealing sleeve 60 is sleeved in a one-to-one correspondence on the end of the corresponding battery cell 110 away from the rear frame 30, and each second sealing sleeve 60 is provided with an avoidance hole 600 for the pole 111 to pass through. Similarly, the second sealing sleeve 60 sleeved on the end of the battery cell 110 can achieve effective sealing between the adjacent battery cells 110 and the cavity wall of the second guide cavity 222 when the battery cell group 11 is embedded in the second guide cavity 222, thereby improving the overall sealing strength of the integrated structure 1 of the bottom plate and the battery.

[0058] In addition, an avoidance hole 600 for allowing the pole 111 of the power core 110 to pass through is formed on the second sealing sleeve 60 , thereby avoiding the influence of the second sealing sleeve 60 on the electrical connection between the distribution box 50 and the pole 111 .

[0059] In order to further improve the stability of the pole 111, as Figure 5 As shown, in an exemplary embodiment provided by the present disclosure, the second sealing sleeve 60 may include a sleeve body 61 and an insulating protruding ring 62 protruding from the sleeve body 61, and the insulating protruding ring 62 is arranged around the circumference of the avoidance hole 600 and is used to be sleeved on the outer periphery of the pole 111. On the one hand, the insulating protruding ring 62 sleeved on the outer periphery of the pole 111 can shield and protect the side of the pole 111, avoiding contact between the external structure and the pole 111; on the other hand, the insulating protruding ring 62 sleeved on the outer periphery of the pole 111 can isolate the direct contact between the pole 111 and the second partition 23 when the pole 111 passes through the second connecting hole 230, thereby avoiding the problem of contact discharge or short circuit between the pole 111 and the second partition 23.

[0060] like Figure 1 , Figure 2As shown, the front frame 20 may further include a cover plate 24, and the front frame 20 may further include an inspection port 25 communicating with the installation cavity 221, and the cover plate 24 may detachably cover the inspection port 25. Since the cover plate 24 detachably covers the inspection port 25, when it is necessary to inspect or maintain the auxiliary components in the installation cavity 221, the cover plate 24 may be directly removed from the front frame 20, and at this time, the operator may perform the inspection work on the auxiliary components through the inspection port 25 communicating with the installation cavity 221.

[0061] It should be noted that, for the embodiment in which the auxiliary component is a distribution box 50 , the cover plate 24 can detachably cover the inspection port 25 , which also makes it easier to quickly inspect the distribution box 50 and / or the connection between the distribution box 50 and the cell terminals 13 .

[0062] like Figures 1 to 3 As shown, the integrated structure 1 of the bottom plate and the battery also includes a connecting frame 70, and 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 respectively connected to the front frame 20 and the rear frame 30, and the two ends of each side plate 72 are respectively connected to the front frame 20 and the rear frame 30, and the front frame 20, the rear frame 30, the bottom guard plate 71 and the side plates 72 are jointly enclosed to form a battery compartment 700 with an opening on the upper part, and the battery module 10 is arranged in the battery compartment 700.

[0063] In addition, a buffer foam can be provided on the inner side of the side plate 72 , and the battery frame ensures that the second sealing sleeve 60 sleeved on the front end of the battery cell 110 and the first sealing sleeve 40 sleeved on the rear end of the battery cell 110 reach the sealing compression amount through the tooling limit and the side plate 72 .

[0064] The present disclosure does not limit the specific connection structure or connection method between the above-mentioned bottom guard plate 71, the side plate 72 and the front frame 20 and the rear frame 30. For example, the two ends of the bottom guard plate 71 can be connected to the front frame 20 and the rear frame 30 respectively by welding, or the two ends of the bottom guard plate 71 can also be connected to the front frame 20 and the rear frame 30 by fasteners or clamping. Similarly, the connection between the side plate 72 and the front frame 20 and the rear frame 30 is also the same, which is not elaborated in the present disclosure.

[0065] In order to ensure the basic fixed installation and salt spray requirements in the middle of the battery cell, such as Figures 1 to 4As shown, in one embodiment provided by the present disclosure, the connection frame 70 may include an upper cover 73, which is made of a foam material and covers the upper opening of the connection frame 70. In this way, in the process of covering the upper opening of the connection frame 70 with the upper cover 73 made of a foam material, since the foam material has a certain adhesion effect, the foam material can be closely attached to the upper edge of the battery cell group 11 to form a physical barrier, thereby effectively preventing moisture, dust and other pollutants from entering the interior of the battery cell group 11, and achieving a better sealing effect.

[0066] Furthermore, precisely because the upper cover 73 is made of foam material, when the battery cell group 11 is sealed, the flexible foam material can flow into and fill the gaps between adjacent battery cells 110, thereby eliminating the need to provide related structures for fixing and positioning the battery cells 110, thereby achieving sealing and fixing of the battery cells 110, reducing redundant parts, making the entire package more lightweight and integrated, and reducing overall costs. In addition, the battery cells 110 participate in the force transmission path of the entire package, which can effectively disperse and transmit externally applied forces, thereby enhancing the pressure and impact resistance of the battery pack.

[0067] like Figures 1 to 4 As shown, since the integrated structure 1 of the bottom plate and the battery can also include a cold plate 80, the cold plate 80 is arranged above the bottom guard plate 71, and the cold plate 80 includes a plate body 81 and a water inlet and outlet end 82 connected to each other, the end of the plate body 81 away from the water inlet and outlet end 82 is connected to the rear frame 30, and the end of the plate body 81 connected to the water inlet and outlet end 82 is connected to the front frame 20. A avoidance groove 26 matching the shape of the water inlet and outlet end 82 is formed on the front frame 20, and the water inlet and outlet end 82 is embedded in the avoidance groove 26, and the outer end surface of the water inlet and outlet end 82 is flush with the outer wall of the front frame 20 formed with the avoidance groove 26. By embedding the water inlet and outlet 82 into the avoidance groove 26 and making its outer end surface flush with the outer wall of the front frame 20, the appearance of the battery pack can be kept neat and streamlined, protruding parts can be reduced, and the overall aesthetics can be improved. In addition, embedding the water inlet and outlet 82 into the avoidance groove 26 can also provide additional protection for the water inlet and outlet 82 to prevent damage to the water inlet and outlet 82 due to gravel, debris, etc. during driving.

[0068] In order to improve the cooling and heat exchange effect of the cold plate 80 on the battery cell group 11, Figure 1 to Figure 2 As shown, the integrated structure 1 of the base plate and the battery provided by the present disclosure may also include a thermally conductive adhesive 90, which is coated on a side of the cold plate 80 close to the battery cell group 11. The thermally conductive adhesive 90 has a good heat transfer efficiency, thereby being more conducive to transferring the heat generated by the battery cell group 11 to the cold plate 80.

[0069] The second aspect of the present disclosure provides a vehicle, comprising the above-mentioned integrated structure 1 of the floor plate and the battery. The vehicle has all the beneficial effects of the above-mentioned integrated structure 1 of the floor plate and the battery, and the present disclosure is not limited thereto.

[0070] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings; however, the present disclosure is not limited to the specific details in the above embodiments. Within the technical concept of the present disclosure, a variety of simple modifications can be made to the technical solution of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

[0071] 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, the present disclosure will not further describe various possible combinations.

[0072] In addition, various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

Claims

1. An integrated structure of a base plate and a battery, characterized in that: The vehicle comprises a battery module, a front frame and a rear frame, wherein the battery module is arranged between the front frame and the rear frame, the battery module comprises a battery cell group, an explosion-proof valve and a battery cell terminal, the battery cell terminal is arranged at one end of the battery cell group close to the front frame, and the explosion-proof valve is arranged at one end of the battery cell group close to the rear frame or on the rear frame.

2. The integrated structure of the base plate and the battery according to claim 1, characterized in that: The rear frame is provided with an exhaust area, the exhaust area is used to communicate with the gas release channel of the battery cell group, and the rear frame is also provided with an exhaust port connecting the exhaust area with the outside atmosphere, and the explosion-proof valve is arranged in the exhaust port.

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

4. The integrated structure of the base plate and the battery according to claim 2, characterized in that: The rear frame includes a rear frame body and a first connection portion, wherein the first connection portion is connected to a side of the rear frame body close to the front frame, the first connection portion has a first cavity inside, and an opening communicating with the first cavity is formed on a side of the first connection portion facing the front frame, the exhaust area is located in the first cavity, and an end of the battery cell group facing away from the front frame is at least partially embedded in the first cavity.

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

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

7. The integrated structure of the base plate and the battery according to claim 4, characterized in that: The integrated structure of the base plate and the battery also includes a plurality of first sealing sleeves, the battery cell group includes a plurality of battery cells, each of the first sealing sleeves is correspondingly sleeved on the end of the corresponding battery cell away from the front frame, each of the first sealing sleeves has a gas release through hole, and the gas release channel of the battery cell is connected to the exhaust area through the gas release through hole.

8. The integrated structure of the base plate and the battery according to any one of claims 1 to 7, characterized in that: The front frame includes a front frame body and a second connecting portion, wherein the second connecting portion is connected to a side of the front frame body close to the rear frame, the second connecting portion has a second cavity therein, and an opening communicating with the second cavity is formed on a side of the second connecting portion facing the rear frame, and an end of the battery cell group facing away from the rear frame is at least partially embedded in the second cavity.

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

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

11. The integrated structure of the base plate and the battery according to claim 10, characterized in that: The integrated structure of the base plate and the battery also includes a distribution box, and the distribution box is arranged in the installation cavity.

12. The integrated structure of the base plate and the battery according to claim 11, characterized in that: The second partition is provided with a second communication hole, and the cell terminals of the cell group are inserted into the second communication hole and are electrically connected to the distribution box.

13. The integrated structure of the base plate and the battery according to claim 8, characterized in that: The integrated structure of the base plate and the battery also includes a plurality of second sealing sleeves, the battery cell group includes a plurality of battery cells, the battery cell terminals include a plurality of poles, each pole is connected to each battery cell in a one-to-one correspondence, each of the second sealing sleeves is one-to-one correspondingly sleeved on the end of the corresponding battery cell away from the rear frame, and each of the second sealing sleeves is provided with an avoidance hole for the pole to pass through.

14. The integrated structure of the base plate and the battery according to claim 13, characterized in that: The second sealing sleeve comprises a sleeve body and an insulating protruding ring protruding from the sleeve body. The insulating protruding ring is arranged around the circumference of the avoidance hole and is used to be sleeved on the outer circumference of the pole.

15. The integrated structure of the base plate and the battery according to claim 9, characterized in that: The front frame further comprises a cover plate, and the front frame further comprises an inspection opening communicated with the installation cavity, and the cover plate is detachably sealed on the inspection opening.

16. The integrated structure of the base plate and the battery according to any one of claims 1 to 7, characterized in that: The integrated structure of the bottom 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, the two ends of each of the side plates 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 on the upper part, and the battery module is arranged in the battery compartment.

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

18. The integrated structure of the base plate and the battery according to claim 16, characterized in that: The integrated structure of the bottom plate and the battery also includes a cold plate, which is arranged above the bottom guard plate. The cold plate includes a plate body and water inlet and outlet ends that are connected to each other. The end of the plate body that is away from the water inlet and outlet ends is connected to the rear frame, and the end of the plate body that is connected to the water inlet and outlet ends is connected to the front frame.

19. The integrated structure of the base plate and the battery according to claim 18, characterized in that: The front frame is formed with an avoidance groove matching the shape of the water inlet and outlet, the water inlet and outlet are embedded in the avoidance groove, and the outer end surface of the water inlet and outlet is flush with the outer wall of the front frame formed with the avoidance groove.

20. A vehicle, characterized in that: An integrated structure comprising a base plate and a battery as described in any one of claims 1 to 19.

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