Integrated battery pack and electric vehicle

Abstract

The utility model relates to an integrated battery pack and electromobile, the integrated battery pack includes box, battery module and strutting piece, the box is equipped with the accommodation cavity, the battery module is installed in the accommodation cavity, the top of battery module is equipped with the decompression valve, and the top of battery module is equipped with a plurality of strutting piece at interval, and the strutting piece is equipped with the decompression valve. The supporting piece is clamped between the battery module and the box body, at least part of the supporting piece is arranged on the pressure release valve in a covering mode, and a pressure release channel is defined by the supporting piece located on the pressure release valve and the battery module. According to the integrated battery pack, the supporting part is used for supporting the box body, and the gravity of a seat and a passenger can be uniformly transmitted to the whole battery module by the supporting part, so that the structural strength and rigidity of the whole integrated battery pack can be improved, and the deformation and distortion of the whole vehicle can be avoided. The supporting piece covers the pressure release valve of the battery module, so that the heat influence on the top of the box body is reduced, and the passenger cabin is prevented from being subjected to the heat influence of high-temperature substances.

Description

Technical Field

[0001] The utility model relates to the technical field of battery manufacturing, in particular to an integrated battery pack and an electric vehicle. Background Art

[0002] With the rapid development and technological iteration of new energy vehicles, the industry has put forward higher requirements for vehicle lightweight, safety and manufacturing cost. For this reason, CTC / CTV (cell to Chassis / cell to vehicle) technology has emerged, and through the integrated design of the whole vehicle, it meets the market demand of reducing the types of parts and lowering the manufacturing cost of the whole vehicle.

[0003] In an existing CTV electric vehicle, the chassis of the whole vehicle is integrated with the box body of the battery pack, thus greatly simplifying the structure of the whole vehicle. However, since the seats in the passenger compartment and the weight of the passengers directly act on the battery pack, the battery modules in the battery pack are deformed and damaged due to the pressure from the passenger compartment, affecting the safe operation of the battery pack. At the same time, when a thermal runaway occurs in the battery module, the high-temperature substances discharged by the pressure relief valve spread to the bottom of the passenger compartment, directly causing a thermal impact on the passenger compartment. Summary of the Utility Model

[0004] The purpose of the utility model is to provide an integrated battery pack and an electric vehicle, which have high safety and can reduce the thermal impact of the battery module on the passenger compartment.

[0005] To achieve the above object, the utility model adopts the following technical solutions:

[0006] An integrated battery pack is provided, which includes a box body, battery modules and supporting members. The box body has a receiving cavity, the battery modules are installed in the receiving cavity, a pressure relief valve is provided at the top of the battery modules, a plurality of the supporting members are arranged at intervals on the top of the battery modules, and the supporting members are clamped between the battery modules and the box body, at least part of the supporting members covers the pressure relief valve, and a pressure relief channel is formed between the supporting members on the pressure relief valve and the battery modules.

[0007] Further, the opposite ends of the supporting members are respectively bonded and fixed to the box body and the battery modules.

[0008] Further, the battery modules include a plurality of battery groups arranged in sequence along a first direction, each battery group includes a plurality of single batteries arranged in sequence along a second direction, and the first direction is perpendicular to the second direction;

[0009] The supporting members are arranged at both ends of the battery modules along the first direction, and / or the supporting members are arranged at the joints of adjacent two battery groups.

[0010] Furthermore, the battery module further includes a CCS component, the CCS component is connected to the pole posts of the single cells, and the support member is provided with a receiving groove for receiving the CCS component.

[0011] Furthermore, the support member includes a first support member, the first support member is disposed at an end position of the battery module, the first support member includes a main support block and a sub-support block, the sub-support block is disposed at an end of the main support block away from the battery module, and a free end of the sub-support block extends in a direction away from the main support block along the first direction, and the receiving groove is formed between the main support block and the sub-support block.

[0012] Furthermore, the support member includes a second support member, the second support member covers the pressure relief valve, the second support member includes a first support block and two second support blocks, the first support block is used for connecting with the box body, the two second support blocks are spaced apart and disposed on a side surface of the first support block facing the battery module, the second support block is used for connecting with the battery module, a pressure relief channel is formed between the first support block and the two second support blocks, and a receiving groove is formed between two ends of the first support block along the first direction and the two second support blocks respectively.

[0013] Furthermore, the support member includes a third support member, the third support member is disposed at a connection position between two adjacent battery groups, the third support member includes a third support block and a fourth support block, the third support block is used for connecting with the box body, the fourth support block is disposed on a side surface of the third support block facing the battery module, the fourth support block is used for connecting with the battery module, and a receiving groove is formed between both ends of the third support block along the first direction and the fourth support block respectively.

[0014] Furthermore, structural adhesive is filled between two adjacent single cells.

[0015] Furthermore, a liquid cooling plate is further included, the liquid cooling plate is disposed at the bottom of the accommodation cavity, the battery module is mounted on the liquid cooling plate, foaming adhesive is filled between the battery module and the cavity wall of the accommodation cavity, and / or foaming adhesive is filled between the liquid cooling plate and the cavity bottom of the accommodation cavity.

[0016] Furthermore, a plurality of temperature sensors are spaced between the battery module and the liquid cooling plate, and the temperature sensors are used for detecting the temperature of the battery module.

[0017] Furthermore, a mounting bracket for mounting a seat is provided at the top of the box body.

[0018] An electric vehicle is also provided, which includes a vehicle body, a seat, and an integrated battery pack. The integrated battery pack is installed on the vehicle body, and the seat is installed on the box body of the integrated battery pack.

[0019] The beneficial effects of the present utility model are as follows: By providing a plurality of support members between the battery module and the top of the box body, the support members are used to support the box body. The gravity of the seat and the occupant can be evenly transmitted to the entire battery module by the support members, avoiding the concentration of the gravity of the seat and the occupant at the connection between the seat and the box body or the foot area of the occupant. By providing the support members, it is beneficial to improve the structural strength and stiffness of the entire integrated battery pack, and avoid the deformation and distortion of the whole vehicle. At the same time, by covering the support member on the pressure relief valve of the battery module, when the battery module undergoes thermal runaway, the high-temperature substances are isolated by the support member, which is beneficial to reducing the thermal influence on the top of the box body and avoiding the thermal influence of the high-temperature substances on the occupant compartment. Description of the Drawings

[0020] Figure 1 It is an exploded view of the integrated battery pack according to an embodiment of the present utility model.

[0021] Figure 2 It is a cross-sectional view of the integrated battery pack after installing the seat according to an embodiment of the present utility model.

[0022] Figure 3 It is a partial cross-sectional view of the integrated battery pack after installing the seat according to an embodiment of the present utility model.

[0023] Figure 4 It is Figure 3 An enlarged view of part A in

[0024] Figure 5 It is a schematic diagram of the integrated battery pack after installing the seat according to an embodiment of the present utility model.

[0025] Figure 6 It is a schematic diagram of the battery module according to an embodiment of the present utility model.

[0026] Figure 7 It is Figure 6 An enlarged view of part B in

[0027] Figure 8 It is an exploded view of the battery module according to an embodiment of the present utility model.

[0028] Figure 9 It is a cross-sectional view of the first support member according to an embodiment of the present utility model.

[0029] Figure 10 It is a cross-sectional view of the second support member according to an embodiment of the present utility model.

[0030] Figure 11Partial schematic view of the third support member of the embodiment of the present utility model.

[0031] In the figure:

[0032] 1. Box body; 11. Box bottom; 111. Groove; 112. First flanging structure; 12. Box cover; 121. Cover body; 122. Second flanging structure; 123. Mounting bracket; 2. Battery module; 21. Single battery; 22. CCS component; 23. Insulating plate; 24. End plate; 25. Buffer sheet; 3. Support member; 31. First support member; 311. Main support block; 312. Sub-support block; 313. First accommodation groove; 314. First glue groove; 32. Second support member; 321. First support block; 322. Second support block; 323. Pressure relief channel; 324. Second accommodation groove; 325. Second glue groove; 33. Third support member; 331. Third support block; 332. Fourth support block; 333. Third accommodation groove; 4. Side foaming glue layer; 5. Bottom foaming glue layer; 6. Liquid cooling plate; 7. Seat; 8. BMS component; 9. Structural glue. Specific embodiments

[0033] To make the technical problems solved by the present utility model, the technical solutions adopted, and the achieved technical effects clearer, the technical solutions of the present utility model will be further described below with reference to the drawings and through specific embodiments.

[0034] As Figures 1 to 5 shown, an integrated battery pack provided by the present utility model includes a box body 1, a battery module 2, and a support member 3. Among them, the box body 1 has a cuboid structure. The length direction of the box body 1 is the X direction shown in the figure, the width direction of the box body 1 is the Y direction shown in the figure, and the height direction of the box body 1 is the Z direction shown in the figure. The box body 1 is a hollow structure, and an accommodation cavity is provided inside the box body 1. The battery module 2 is installed in the accommodation cavity. The top of the battery module 2 is provided with a pressure relief valve. When the battery module 2 undergoes thermal runaway, the pressure relief valve opens and releases the high-temperature gas and other substances (such as electrolyte) inside the battery module 2. The support members 3 are multiple, and the multiple support members 3 are arranged at intervals on the top of the battery module 2, and the support members 3 are clamped between the battery module 2 and the box body 1. It can also be understood that one end of the support member 3 abuts against the battery module 2, and the other end abuts against the top cavity wall of the accommodation cavity. At least part of the support member 3 covers the pressure relief valve, that is, a support member 3 is provided at the corresponding position of the pressure relief valve of the battery module 2. A pressure relief channel 323 is formed between the support member 3 located on the pressure relief valve and the battery module 2. When the battery module 2 undergoes thermal runaway, the high-temperature gas and other substances are discharged into the pressure relief channel 323 through the corresponding pressure relief valve, and the pressure relief channel 323 is used to evacuate the high-temperature gas and other substances and discharge them to the outside of the box body 1.

[0035] It can be understood that the integrated battery pack is applied to a CTV electric vehicle, that is, the whole vehicle adopts an integrated design, and the top of the box body 1 is used as the bottom of the whole vehicle occupant compartment. The seats 7 and the weight of the occupants in the occupant compartment directly act on the box body 1. Since a plurality of support members 3 are provided between the battery module 2 and the top of the box body 1, the support members 3 are used to support the box body 1, and the gravity of the seats 7 and the occupants can be evenly transmitted to the entire battery module 2 by the support members 3, avoiding the concentration of the gravity of the seats 7 and the occupants at the connection between the seats 7 and the box body 1 or the foot area of the occupants. By providing the support members 3, it is beneficial to improve the structural strength and stiffness of the entire integrated battery pack and avoid deformation and distortion of the whole vehicle. At the same time, by covering the support member 3 on the pressure relief valve of the battery module 2, when the battery module 2 undergoes thermal runaway, the high-temperature substances are isolated by the support member 3, which is beneficial to reducing the thermal impact on the top of the box body 1 and avoiding the thermal impact of the high-temperature substances on the occupant compartment.

[0036] Specifically, the box body 1 includes a box bottom 11 and a box cover 12. The box bottom 11 and the box cover 12 are integrally stamped to improve the overall structural strength of the box body 1. A groove 111 is formed on the side of the box bottom 11 facing the box cover 12, and a first flanging structure 112 is formed on the periphery of the box bottom 11. The first flanging structure 112 surrounds the groove 111, and the first flanging structure 112 is flush with the notch of the groove 111. The box cover 12 includes a cover body 121 and a mounting bracket 123. The structure of the cover body 121 is similar to that of the box bottom 11, and a second flanging structure 122 that cooperates with the first flanging structure 112 is formed on the periphery of the cover body 121. The cover body 121 and the box bottom 11 are buckled together and fixedly connected by fasteners (such as screws, bolts, rivets, etc.). The fasteners are passed through the first flanging structure 112 and the second flanging structure 122. A receiving cavity for installing the battery module 2 is formed between the cover body 121 and the box bottom 11. The mounting bracket 123 is used to mount the seat 7. There are a plurality of mounting brackets 123, and among the plurality of mounting brackets 123, at least two mounting brackets 123 with different shapes and sizes may be included to adapt to the structural dimensions and mounting positions of the seat 7. The plurality of mounting brackets 123 are arranged on the side surface of the cover body 121 facing away from the box bottom 11, that is, the mounting brackets 123 are arranged on the top of the box body 1. In this embodiment, the mounting bracket 123 and the cover body 121 are integrally stamped. It can be understood that the box cover 12 of the box body 1 forms the bottom of the occupant compartment, and the gravity from the seats 7 and the occupants is applied to the box cover 12. One end of the support member 3 is connected to the inner side wall of the box cover 12, so as to evenly distribute the gravity from the seats 7 and the occupants to the entire integrated battery pack through the support member 3, avoiding deformation, distortion, etc. of the integrated battery pack due to local concentrated stress.

[0037] Specifically, the integrated battery pack further includes a liquid cooling plate 6. The liquid cooling plate 6 is a prior art component that uses internally circulating coolant to dissipate heat from the battery module 2. The liquid cooling plate 6 is disposed at the bottom of the receiving cavity, that is, the liquid cooling plate 6 is installed at the bottom of the groove 111 of the bottom case 11. The battery module 2 is installed on the liquid cooling plate 6, and heat exchange can occur between the two. A foaming agent is filled between the side wall of the battery module 2 and the cavity wall of the receiving cavity to form a side foaming agent layer 4. In addition, a foaming agent is filled between the liquid cooling plate 6 and the bottom of the receiving cavity to form a bottom foaming agent layer 5. The side foaming agent layer 4 and the bottom foaming agent layer 5 play a role in buffering and energy absorption, preventing damage to the battery module 2 and the liquid cooling plate 6 due to bottom impact during the operation of the electric vehicle. At the same time, by filling the foaming agent, the gaps between the battery module 2 and the box body 1 and between the liquid cooling plate 6 and the box body 1 can be eliminated, integrating the entire integrated battery pack and improving the strength and stiffness of the entire integrated battery pack. Of course, in some embodiments, the foaming agent can also be filled separately between the battery module 2 and the box body 1, or separately between the liquid cooling plate 6 and the box body 1.

[0038] Specifically, a plurality of temperature sensors are spaced between the battery module 2 and the liquid cooling plate 6. The temperature sensors are used to detect the temperature of the battery module 2. By using the temperature sensors to monitor the temperature change of the battery module 2, it is convenient to intervene in a timely manner when the temperature of the battery module 2 is abnormal, ensuring the safety of the integrated battery pack.

[0039] Specifically, the integrated battery pack further includes a BMS component 8 (Battery Management System, abbreviated as "BMS"). The BMS component 8 is disposed on the battery module 2 and is electrically connected to the battery module 2. The temperature sensors are electrically connected to the BMS component 8. The BMS component 8 is a prior art component that is used for over-discharge protection, temperature abnormal protection, over-current protection during charging and discharging, etc. of the battery module.

[0040] Refer to Figures 6 to 8As shown, the battery module 2 includes a plurality of battery packs arranged in sequence along a first direction (the Y direction shown in the figure), and each battery pack includes a plurality of single cells 21 arranged in sequence along a second direction (the X direction shown in the figure). The first direction is perpendicular to the second direction. In this embodiment, the plurality of battery packs are arranged in sequence along the width direction of the box body 1, and the plurality of single cells 21 in each battery pack are arranged in sequence along the length direction of the box body 1. The single cell 21 is a square battery, and the thickness direction of the square battery is the X direction shown in the figure. A plurality of support members 3 are arranged in parallel and at intervals, and the length direction of the support members 3 is parallel to the length direction of the box body 1, so that one of the support members 3 can evenly distribute the gravity from the seat 7 and the occupant to the plurality of single cells 21. Structural adhesive is filled between two adjacent single cells 21. By filling the structural adhesive, the gap between adjacent single cells 21 can be eliminated, so that all the single cells 21 form a whole, thereby improving the structural strength of the entire battery module 2, and at the same time enabling the entire battery module 2 to bear the pressure from the box cover 12.

[0041] Specifically, a plurality of battery modules 2 are installed in the box body 1, and the plurality of battery modules 2 are arranged in sequence along the width direction of the box body 1. In this embodiment, the number of battery modules 2 is two, and the two battery modules 2 are arranged at intervals along the width direction of the box body 1, and structural adhesive is filled between the two battery modules 2. The battery module 2 further includes a CCS component 22, an insulating plate 23, an end plate 24, and a buffer sheet 25. Among them, the CCS component 22 (Cells Contact System, battery module acquisition and integration component, abbreviated as "CCS") is connected to the pole posts of the single cells 21 and is used for voltage and temperature data acquisition, etc. The CCS component 22 is located at the top of the battery module 2, and the insulating plate 23 is used to cover the CCS component 22 to play an insulating and protective role. Two end plates 24 are correspondingly arranged for each battery pack, and the two end plates 24 are arranged at intervals along the length direction of the box body 1, and the plurality of single cells 21 in the battery pack are clamped between the corresponding two end plates 24. A buffer sheet 25 is clamped between the end plate 24 and the inner wall of the box body 1, and the buffer sheet 25 is made of foam and plays a role of buffering and energy absorption. It should be noted that the CCS component 22 includes a plurality of terminal rows, and multiple rows of positive and negative pole posts are distributed on the top of the entire battery module 2. Each row of positive pole posts or each row of negative pole posts is correspondingly provided with a terminal row, and the terminal row is connected to the corresponding positive pole post or negative pole post. The plurality of terminal rows are arranged at intervals along the width direction of the box body 1, and there is a gap between two adjacent terminal rows.

[0042] Due to the different structures of the respective regions at the top of the battery module 2, correspondingly, the multiple support members 3 are also provided with different structures to adapt to the installation space. A receiving groove for receiving the CCS component 22 is provided on one side of the support member 3 facing the battery module 2. The CCS component 22 is located in the receiving groove of the support member 3 to prevent the top of the box body 1 from directly pressing on the CCS component 22, thereby ensuring a reliable connection between the CCS component 22 and the pole column. In this embodiment, the support member 3 includes a first support member 31, a second support member 32, and a third support member 33. Among them, the first support member 31 is provided at both ends of the battery module 2 along its first direction (the width direction of the box body 1). The second support member 32 is provided above the pressure relief valve. The third support member 33 is provided at the junction of two adjacent battery packs. To ensure the installation stability of the support member 3, both ends of the support member 3 are adhesively fixed to the box body 1 and the battery module 2 respectively. That is, along the height direction of the box body 1, one end of the support member 3 is adhesively fixed to the battery module 2 with structural adhesive, and the other end is adhesively fixed to the inner wall of the box cover 12 with structural adhesive.

[0043] Specifically, referring to Figure 9As shown, the first support member 31 includes a main support block 311 and a secondary support block 312. The corresponding receiving groove on the first support member 31 is a first receiving groove 313. A first glue groove 314 is provided at one end of the main support block 311 facing the battery module 2. The secondary support block 312 is provided at one end of the main support block 311 away from the battery module 2. One end of the secondary support block 312 is connected to the main support block 311, and the other end of the secondary support block 312 is a free end, and its free end extends in a first direction away from the main support block 311. It can also be understood that the secondary support block 312 is vertically arranged with the main support block 311, and the first receiving groove 313 is formed between the main support block 311 and the secondary support block 312, and the first receiving groove 313 is used to accommodate the CCS assembly 22 and the insulating plate 23. During installation, one end of the main support block 311 having the first glue groove 314 abuts against the shell of the single battery 21 and is fixed by structural adhesive. The top of the main support block 311 and / or the secondary support block 312 are against the inner wall of the box cover 12 and are fixed by structural adhesive. The first accommodating groove 313 is used to avoid the CCS assembly 22 and the insulating plate 23 close to the first support member 31. In this embodiment, since the CCS assembly 22 is located below the secondary support block 312, the pressure from the box cover 12 can be avoided to act directly on the CCS assembly 22 and the pole, thereby avoiding the circuit connection area of ​​the battery module 2 from being broken or deformed due to external force. Of course, in some embodiments, it can also be set that the main support block 311 is higher than the secondary support block 312, or the main support block 311 is lower than the secondary support block 312. This structure makes the main support block 311 and the secondary support block 312 not on the same plane, so that a gap is formed between the main support block 311 or the secondary support block 312 and the box cover 12 to accommodate a sufficient amount of structural adhesive and improve the bonding strength between the first support member 31 and the box cover 12.

[0044] Specifically, refer to Figure 10As shown, the second support member 32 includes a first support block 321 and two second support blocks 322. The corresponding accommodation groove on the second support member 32 is the second accommodation groove 324. A second glue groove 325 is provided on one side of the first support block 321 facing the inner wall of the box cover 12. The second glue groove 325 is used to accommodate structural glue so that the second support member 32 can be firmly bonded to the box cover 12. Along the width direction of the second support block 322 (i.e., the width direction of the box body 1), the two second support blocks 322 are spaced apart on one side of the first support block 321 facing the battery module 2. And the second support block 322 is spaced from the end of the first support block 321 in the width direction. A pressure relief channel 323 is formed between the first support block 321 and the two second support blocks 322. Second accommodation grooves 324 are formed between the two ends of the first support block 321 in the first direction and the two second support blocks 322 respectively. The second accommodation grooves 324 are used to accommodate the CCS assembly 22 and the insulating plate 23. During installation, the end of the first support block 321 with the second glue groove 325 abuts against the inner wall of the box cover 12 and is fixedly bonded by structural glue. The second support block 322 abuts against the housing of the single battery 21, and the pressure relief valve is located between the two second support blocks 322 so that a pressure relief channel 323 is formed among the first support block 321, the two second support blocks 322 and the single battery 21. The second accommodation groove 324 is used to avoid the CCS assembly 22 and the insulating plate 23 close to the second support member 32. In this embodiment, since the CCS assembly 22 is located below the first support block 321, the pressure from the box cover 12 can be prevented from directly acting on the CCS assembly 22 and the pole column, thereby avoiding breakage and deformation of the circuit connection area of the battery module 2 due to external force.

[0045] Specifically, referring to Figure 11As shown, the third support member 33 includes a third support block 331 and a fourth support block 332. The corresponding receiving groove on the third support member 33 is a third receiving groove 333. The third support block 331 is used to connect with the box cover 12 of the box body 1. The third support block 331 is provided with a third glue groove on the side facing the box cover 12. The third glue groove is used to accommodate the structural glue 9 so that the third support block 331 is firmly bonded to the box cover 12. The fourth support block 332 is provided on the side of the third support block 331 facing the battery module 2. The fourth support block 332 is used to connect with the battery module 2. In order to ensure the bonding stability of the fourth support block 332, the third glue groove can also be provided on the side of the fourth support block 332 away from the third support block 331 to accommodate a sufficient amount of structural glue 9. Along the width direction of the third support block 331 (i.e., the width direction of the box body 1), the fourth support block 332 is located in the middle of the third support block 331, and the fourth support block 332 is spaced from the end of the width direction of the third support block 331. The third accommodating groove 333 is formed between the two ends of the third support block 331 along its width direction (first direction) and the fourth support block 332. The third accommodating groove 333 is used to avoid the CCS assembly 22 and the insulating plate 23 close to the third support member 33. In this embodiment, the third support member 33 is installed at the connection between two adjacent battery packs. During installation, one end of the third support block 331 having the third glue groove is bonded and fixed to the inner wall of the box cover 12, and the fourth support block 332 is simultaneously abutted against the shell of the single cell 21 in the two adjacent battery packs and bonded and fixed. Since the CCS assembly 22 is located below the third support block 331, the pressure from the box cover 12 can be avoided from directly acting on the CCS assembly 22 and the pole, thereby preventing the circuit connection area of ​​the battery module 2 from being broken or deformed due to external force.

[0046] It should be noted that, in practical applications, the number and position of the support members 3 can be reasonably selected according to the specific structural dimensions of the single battery 21 .

[0047] like Figure 1 , Figure 2 and Figure 5 As shown, an electric vehicle is also provided, including a vehicle body, a seat 7 and an integrated battery pack. The integrated battery pack is installed on the vehicle body, and the top of the box body 1 of the integrated battery pack (i.e., the box cover 12) is also used as the bottom of the passenger compartment of the vehicle body, thereby simplifying the structure of the entire vehicle. The seat 7 is installed on the mounting bracket 123 on the box cover 12. The weight of the seat 7 and the occupant directly acts on the box cover 12. Since the integrated battery pack includes a support member 3, the support member 3 is used to evenly distribute the pressure from the box cover 12 to the entire integrated battery pack, thereby avoiding deformation, twisting, etc. of the integrated battery pack due to concentrated force, thereby improving the safety performance of the integrated battery pack.

[0048] Remarkable effects of this embodiment: By arranging a plurality of support members 3 between the top of the battery module 2 and the box body 1, the support members 3 are used to support the box body 1, and the gravity of the seat 7 and the occupant can be evenly transmitted to the entire battery module 2 by the support members 3, avoiding the concentration of the gravity of the seat 7 and the occupant at the connection between the seat 7 and the box body 1 or the foot area of the occupant. By arranging the support members 3, it is beneficial to improve the structural strength and stiffness of the entire integrated battery pack and avoid vehicle deformation and distortion. At the same time, by covering the support member 3 on the pressure relief valve of the battery module 2, when the battery module 2 undergoes thermal runaway, the high-temperature substances are isolated by the support member 3, which is beneficial to reducing the thermal impact on the top of the box body 1 and avoiding the thermal impact of the high-temperature substances on the occupant compartment.

[0049] The above content is only the preferred embodiment of the present invention. For those of ordinary skill in the art, according to the idea of the present invention, there will be changes in the specific implementation manner and application scope. The content of this specification should not be construed as a limitation to the present invention.

Claims

1. An integrated battery pack, characterized in that: The invention comprises a box body, a battery module and a support member, wherein the box body has a accommodating cavity, the battery module is installed in the accommodating cavity, the top of the battery module has a pressure relief valve, a plurality of the support members are arranged at intervals on the top of the battery module, and the support members are clamped between the battery module and the box body, at least part of the support members covers the pressure relief valve, and a pressure relief channel is formed between the support members on the pressure relief valve and the battery module.

2. The integrated battery pack according to claim 1, characterized in that: The opposite ends of the support member are respectively bonded and fixed to the box body and the battery module.

3. The integrated battery pack according to claim 1, characterized in that: The battery module includes a plurality of battery packs sequentially arranged along a first direction, each of the battery packs includes a plurality of single cells sequentially arranged along a second direction, and the first direction is perpendicular to the second direction; The supporting members are provided at both ends of the battery module along the first direction, and / or the supporting members are provided at the joints of two adjacent battery packs.

4. The integrated battery pack according to claim 3, characterized in that: The battery module further includes a CCS assembly, the CCS assembly is connected to the pole of the single battery, and the support member is provided with a receiving groove for receiving the CCS assembly.

5. The integrated battery pack according to claim 4, characterized in that: The support member includes a first support member, which is arranged at the end position of the battery module. The first support member includes a main support block and a secondary support block. The secondary support block is arranged at an end of the main support block away from the battery module, and the free end of the secondary support block extends along the first direction away from the main support block, and the accommodating groove is surrounded by the main support block and the secondary support block.

6. The integrated battery pack according to claim 4, characterized in that: The support member includes a second support member, the second support member is covered on the pressure relief valve, the second support member includes a first support block and two second support blocks, the first support block is used to connect with the box body, the two second support blocks are spaced apart on a side of the first support block facing the battery module, the second support block is used to connect with the battery module, the first support block and the two second support blocks form the pressure relief channel, and the two ends of the first support block along the first direction respectively form the accommodating groove with the two second support blocks.

7. The integrated battery pack according to claim 4, characterized in that: The support member includes a third support member, and the third support member is arranged at the connection between two adjacent battery packs. The third support member includes a third support block and a fourth support block. The third support block is used to connect with the box body, and the fourth support block is arranged on a side of the third support block facing the battery module. The fourth support block is used to connect with the battery module, and both ends of the third support block along the first direction form the accommodating groove with the fourth support block.

8. The integrated battery pack according to claim 3, characterized in that: Structural adhesive is filled between two adjacent single cells.

9. The integrated battery pack according to any one of claims 1 to 8, characterized in that: It also includes a liquid cooling plate, which is arranged at the bottom of the accommodating cavity, and the battery module is installed on the liquid cooling plate. The space between the battery module and the cavity wall of the accommodating cavity is filled with foam glue, and / or the space between the liquid cooling plate and the cavity bottom of the accommodating cavity is filled with foam glue.

10. The integrated battery pack according to claim 9, characterized in that: A plurality of temperature sensors are arranged between the battery module and the liquid cooling plate, and the temperature sensors are used to detect the temperature of the battery module.

11. The integrated battery pack according to any one of claims 1 to 8, characterized in that: A mounting bracket for mounting a seat is arranged on the top of the box.

12. An electric vehicle, characterized in that: It comprises a vehicle body, a seat and an integrated battery pack as claimed in any one of claims 1 to 11, wherein the integrated battery pack is mounted on the vehicle body and the seat is mounted on a box of the integrated battery pack.

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