Battery pack and electric automobile comprising same

Abstract

The utility model discloses a battery pack and an electric automobile comprising the same, the battery pack comprises a battery body and a battery box body, the battery box body comprises a frame structure, a bottom plate and a reinforcing piece; the bottom plate is connected to the bottom of the frame structure so as to form an accommodating cavity for accommodating the battery body in the frame structure; and a reinforcing piece is arranged in the accommodating cavity, is connected to the bottom plate and is used for supporting the battery body. According to the battery pack, the battery body is arranged in the accommodating cavity, the battery body can be protected through the accommodating cavity, the service life of the battery body is prolonged, and the battery pack can be assembled into an integral module in the form, so that the battery pack can be conveniently mounted in a module form subsequently. Besides, by adopting the structural form, the reinforcing piece is arranged in the accommodating cavity and is connected to the bottom plate, and the bottom plate can be reinforced through the reinforcing piece, so that the risk that the bottom plate is crushed by the battery body is reduced, and the stability and the reliability of the battery body placed in the accommodating cavity are further improved.

Description

Technical Field

[0001] The utility model relates to a battery pack and an electric vehicle comprising the battery pack. Background Art

[0002] Electric vehicles have the advantages of zero emissions, low noise, and economical operation and maintenance, and are becoming more and more popular among users. The energy used by electric vehicles is the electricity provided by the battery packs on board. Electric vehicles need to be charged after the electricity is used up. The battery packs of electric vehicles are generally divided into fixed and replaceable types. Among them, fixed battery packs are generally fixed on the vehicle, and the vehicle is directly used as the charging object when charging. The replaceable battery packs are generally fixed on the bracket of the vehicle through a movable installation method. The battery pack can be removed for replacement or charging operations separately. After the replaced battery pack is charged, it is installed on the vehicle.

[0003] The existing battery pack includes a battery body and a battery box. The four side walls of the battery box are made of sheet metal and welded to each other. The battery body is installed in the battery box. However, due to the insufficient overall strength of the battery box, the battery box is crushed when the battery body is placed in the battery box, causing the battery body to fall off from the battery box, increasing the risk of damage to the battery body. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the defect in the prior art that the overall strength of the battery box is not enough, resulting in the phenomenon that the battery body is crushed when placed in the battery box, thereby causing the battery body to fall off from the battery box, increasing the risk of damage to the battery body, and provide a battery pack and an electric vehicle containing the same.

[0005] The utility model solves the above technical problems through the following technical solutions:

[0006] The utility model discloses a battery pack, which includes a battery body and a battery box, wherein the battery box includes a frame structure, a bottom plate and a reinforcement member; the bottom plate is connected to the bottom of the frame structure to form a receiving cavity in the frame structure for receiving the battery body;

[0007] The reinforcing member is arranged in the accommodating cavity and is connected to the bottom plate for supporting the battery body.

[0008] In this solution, the battery body is arranged in the accommodating cavity, and the accommodating cavity can be used to protect the battery body, thereby increasing the service life of the battery body. In addition, the above form can assemble the battery pack into an integral module, which is convenient for the subsequent installation of the battery pack in the form of a module. In addition, by adopting the above structural form, a reinforcement is arranged in the accommodating cavity, and the reinforcement is connected to the bottom plate. The bottom plate can be reinforced by the reinforcement, thereby increasing the strength of the bottom plate, thereby reducing the risk of the bottom plate being crushed by the battery body, increasing the strength and stability of the bottom plate supporting the battery body, and thereby increasing the stability and reliability of the battery body placed in the accommodating cavity.

[0009] Preferably, the reinforcement member includes a first reinforcement portion and a first support portion, the first reinforcement portion is connected to the bottom plate, the first support portion is connected to the first reinforcement portion and extends from the first reinforcement portion toward the direction close to the battery body, and the first support portion is used to support the battery body;

[0010] Preferably, a first cavity is formed on the reinforcement member, and there are a plurality of first supporting portions, which are arranged at intervals along an extension direction of the first reinforcement portion to form the first cavity between two adjacent first supporting portions.

[0011] In this solution, the above-mentioned structural form is adopted, the first reinforcing part is connected to the bottom plate, and the first supporting part is abutted against the battery body, and the battery body can be supported by the first reinforcing part and the first supporting part on the bottom plate, thereby improving the strength and stability of the bottom plate supporting the battery body, thereby improving the stability and reliability of the battery body placed in the accommodating cavity. In addition, the first cavity is opened on the first supporting part, which reduces the weight and use cost of the reinforcing member while ensuring the overall structural strength.

[0012] Preferably, the reinforcement member further includes a second reinforcement portion and a second support portion, the second reinforcement portion is connected to the first support portion, one end of the second support portion is connected to the second reinforcement portion, and the other end of the second support portion extends toward the bottom plate for connection with the bottom plate;

[0013] Preferably, there are a plurality of the second supporting portions, and the plurality of the second supporting portions are arranged at intervals along the extension direction of the second reinforcing portion to form the first cavity between two adjacent second supporting portions.

[0014] In this solution, the above-mentioned structural form is adopted, and the second reinforcing part and the second supporting part are used to further improve the strength of the bottom plate, and at the same time, the strength of the first reinforcing part and the first supporting part is also improved, thereby further improving the strength and stability of the bottom plate supporting the battery body, and further improving the stability and reliability of the battery body placed in the accommodating cavity. In addition, the first cavity is formed between two adjacent second supporting parts, which reduces the weight and use cost of the reinforcing member while ensuring the overall structural strength.

[0015] Preferably, the reinforcement also includes a third reinforcement portion, the third reinforcement portion is connected to the first support portion close to the frame structure, one end of the first support portion close to the battery body is connected to the third reinforcement portion, and the other end is connected to the first reinforcement portion.

[0016] In the present solution, the above-mentioned structural form is adopted, and the overall strength of the reinforcement close to the frame structure is improved by the third reinforcement part, thereby further improving the strength and stability of the bottom plate supporting the battery body, thereby improving the stability and reliability of the battery body placed in the accommodating cavity, and at the same time, the connection between the frame structure and the bottom plate can be strengthened, thereby further improving the stability of the battery box.

[0017] Preferably, the reinforcement member further includes a protrusion, which is connected to a side of the third reinforcement portion away from the first support portion and extends from the third reinforcement portion toward the battery body, and the protrusion is used to support the battery body.

[0018] In this solution, the above-mentioned structural form is adopted, and the reinforcement member supports the battery body through the protrusions.

[0019] Preferably, the battery pack further comprises a connecting member, a first through hole is formed on at least one of the first supporting parts away from the frame structure, a second through hole is formed on the bottom plate, and the first through hole and the second through hole are connected via the connecting member.

[0020] In this solution, the connection between the reinforcing member far away from the frame structure and the bottom plate is realized by the connecting member. In addition, the above structural form is adopted to facilitate the connection between the reinforcing member and the bottom plate.

[0021] Preferably, there are a plurality of reinforcing members, and the plurality of reinforcing members are arranged at intervals along the extension direction of the bottom plate;

[0022] And / or, the reinforcing member is arranged at a corresponding position of the frame structure and / or the fixing member on the bottom plate, and extends in a direction away from the frame structure and / or the fixing member.

[0023] In this solution, the above-mentioned structural form is adopted, and multiple reinforcement members are arranged at intervals along the extension direction of the bottom plate to further improve the strength of the bottom plate, thereby improving the strength and stability of the bottom plate supporting the battery body, and further improving the stability and reliability of the battery body placed in the accommodating cavity. In addition, the connection between the bottom plate and the frame structure and the corresponding position of the fixing member are strengthened by the reinforcement member, thereby improving the structural strength of the battery box body.

[0024] Preferably, the battery box further comprises an upper cover and a temperature regulating member, wherein the temperature regulating member is arranged on the upper cover and / or the bottom plate and is used to regulate the temperature in the accommodating cavity;

[0025] And / or, the battery pack further includes a buffer component, and the buffer component is arranged between the temperature regulating component and the bottom plate.

[0026] In the present solution, the above-mentioned structural form is adopted, and the temperature in the accommodating chamber can be adjusted by the thermostat by arranging the thermostat on the upper cover and / or the bottom plate. The thermostat can both lower the temperature in the accommodating chamber and raise the temperature in the accommodating chamber, which is beneficial to ensure that the temperature in the accommodating chamber is at a normal temperature, thereby avoiding affecting the normal operation and performance stability of the components in the accommodating chamber. Especially when facing extremely cold or hot weather, the thermostat can reduce the impact of the external temperature on the battery pack, which is beneficial to increase the use scenarios of the battery pack and improve the versatility of the battery pack. When both the upper cover and the bottom plate are provided with thermostats, it is beneficial to ensure the uniformity of the temperature regulation of the battery pack, thereby ensuring the functional integrity of the battery pack and improving the service life of the battery pack.

[0027] In addition, the buffer member can provide buffering for the battery body to prevent the battery body from being damaged by collision during transportation, thereby further improving the safety and service life of the battery body.

[0028] Preferably, one side of the temperature regulating member is connected to the reinforcing member and an end of the buffer member away from the bottom plate, and the other side is connected to the battery body.

[0029] In this solution, the above-mentioned structural form is adopted, and the temperature regulating member is arranged on the side of the buffer member and the reinforcement member close to the battery body, thereby improving the efficiency of the temperature regulating member in regulating the temperature of the battery body in the accommodating cavity.

[0030] Preferably, a groove is formed on the first surface of the bottom plate close to the battery body, and the groove is used to accommodate the reinforcement.

[0031] In this solution, the above-mentioned structural form is adopted to facilitate the placement of the reinforcement.

[0032] Preferably, the battery box also includes a front beam, a rear beam and two side walls, and the front beam and the rear beam are respectively connected to the front and rear ends of the two side walls, so that the front beam, the rear beam and the two side walls form the frame structure; the front beam, the rear beam and the two side walls all have a second cavity inside.

[0033] In this solution, the above structural form is adopted, and the battery body can be protected by the frame structure, thereby increasing the service life of the battery body. In addition, the front beam, the rear beam and the two side walls all have a second cavity inside, so that while ensuring that the overall structural strength of the battery pack meets the requirements, the material used is reduced, thereby achieving the effect of reducing the weight of the battery pack.

[0034] Preferably, the battery box further comprises a fixing member, wherein the fixing member is located in the frame structure and is connected to the front beam, the rear beam and the two side walls.

[0035] In this solution, the above-mentioned structural form is adopted, and the fixing parts can effectively strengthen the structural strength of the battery box, effectively avoid the deformation of the battery pack, improve the anti-seismic performance of the battery pack, and greatly improve the safety and stability of the battery pack. At the same time, the fixing parts are located in the frame structure, making the structure more compact and not occupying additional space.

[0036] Preferably, the fixing member comprises transverse ribs and longitudinal ribs which are staggered and connected to each other;

[0037] And / or, the fixing member has a third cavity inside.

[0038] In this solution, the fixing member includes transverse ribs and longitudinal ribs that are interlaced and connected to each other, which has the characteristics of simple structure, convenient processing and manufacturing, and reduces the use cost. At the same time, the above-mentioned structural form is adopted to open a third cavity inside the fixing member to reduce the material and achieve the effect of reducing the weight of the battery pack.

[0039] Preferably, the battery pack further comprises a plurality of functional components, the battery box further comprises a plurality of mounting seats, the frame structure is provided with a plurality of mounting openings, the mounting seats are embedded in the mounting openings, and the functional components are connected to the mounting seats;

[0040] Preferably, the functional component comprises an electrical connector, a liquid cooling connector and at least one pressure relief valve, the electrical connector and the liquid cooling connector are both connected to the frame structure, and each of the pressure relief valves is respectively connected to the frame structure.

[0041] In this solution, the mounting seat is embedded in the mounting opening and connected to the frame structure, and the functional components are installed through the mounting seat to firmly mount the functional components on the frame structure, thereby ensuring the installation strength requirements of the functional components, thereby effectively improving the connection stability of the overall structure of the battery pack and the seismic performance of the battery pack.

[0042] In addition, with the above-mentioned structural form, the electric connector and the liquid cooling connector are both connected to the front beam, and the electric connector and the liquid cooling connector are respectively plugged in or disconnected with the vehicle-end electric connector and the vehicle-end liquid cooling connector on the electric vehicle, thereby realizing plugging and disconnecting synchronously, making the plugging between the electric connector and the liquid cooling connector and the vehicle-end electric connector and the vehicle-end liquid cooling connector on the electric vehicle more stable and reliable, effectively avoiding the problem of unstable connection; and achieving a more compact overall structure of the battery pack. At the same time, by installing a pressure relief valve on the front beam and / or the rear beam, the pressure in the front end and / or the rear end of the battery pack is relieved, effectively preventing the internal pressure of the battery pack from being too high, and achieving higher safety and stability.

[0043] The utility model further discloses an electric vehicle, which comprises a battery pack as described in any one of the above items.

[0044] In this solution, the battery pack is applied to the electric vehicle, so that the battery body can be set in the accommodating cavity, and the battery body can be protected by the accommodating cavity, which increases the service life of the battery body, and the above form can assemble the battery pack into an integral module, which is convenient for the subsequent installation of the battery pack in the form of a module. In addition, by adopting the above structural form, a reinforcement member is set in the accommodating cavity, and the reinforcement member is connected to the bottom plate, and the bottom plate can be reinforced by the reinforcement member, thereby increasing the strength of the bottom plate, thereby reducing the risk of the bottom plate being crushed by the battery body, and increasing the strength and stability of the bottom plate supporting the battery body, thereby increasing the stability and reliability of the battery body placed in the accommodating cavity.

[0045] The positive and progressive effects of the utility model are:

[0046] The battery body is arranged in the accommodating cavity, and the accommodating cavity can be used to protect the battery body, thereby increasing the service life of the battery body. In addition, the above form can assemble the battery pack into an integral module, which is convenient for the subsequent installation of the battery pack in the form of a module. In addition, by adopting the above structural form, a reinforcement is arranged in the accommodating cavity, and the reinforcement is connected to the bottom plate. The bottom plate can be reinforced by the reinforcement, thereby increasing the strength of the bottom plate, thereby reducing the risk of the bottom plate being crushed by the battery body, increasing the strength and stability of the bottom plate supporting the battery body, and thereby increasing the stability and reliability of the battery body placed in the accommodating cavity. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] Figure 1A schematic diagram of the structure of a battery pack according to an embodiment of the utility model;

[0048] Figure 2 This is a schematic diagram of the structure of a battery box according to an embodiment of the utility model;

[0049] Figure 3 A schematic diagram of a battery box according to an embodiment of the utility model;

[0050] Figure 4 A partial structural schematic diagram of a battery box according to an embodiment of the utility model;

[0051] Figure 5 It is a partial three-dimensional schematic diagram of a battery box according to an embodiment of the utility model;

[0052] Figure 6 A partial schematic diagram of a battery box according to an embodiment of the utility model;

[0053] Figure 7 It is a partial three-dimensional structural schematic diagram of a battery box according to an embodiment of the utility model;

[0054] Figure 8 A schematic cross-sectional view of a battery box according to an embodiment of the utility model;

[0055] Fig. 9 for Figure 8 A partial enlarged schematic diagram in the middle;

[0056] Fig.10 for Figure 8 A partial enlarged schematic diagram of point B in the middle;

[0057] Fig.11 for Figure 8 A partial enlarged schematic diagram of point C in the middle;

[0058] Fig.12 This is a schematic structural diagram of a plate body at the bottom plate of an embodiment of the utility model;

[0059] Fig.13 It is a schematic diagram of the cross-sectional structure of the temperature regulating plate at the bottom plate of an embodiment of the utility model;

[0060] Fig.14 This is a schematic structural diagram of the plate body at the upper cover of an embodiment of the utility model;

[0061] Fig.15 It is a schematic diagram of the cross-sectional structure of the temperature regulating plate at the upper cover of an embodiment of the utility model.

[0062] Description of reference numerals:

[0063] Battery pack 100, battery box 1, frame structure 11, mounting port 111, second through hole 112, bottom plate 12, groove 121, protrusion 122, accommodating cavity 14, upper cover 15, temperature regulating component 16, temperature regulating plate 161, flow channel 1611, plate body 1612, protection plate 1613, buffer component 17, front beam 18, rear beam 19, side wall 20, mounting seat 31, reinforcement 2, first reinforcement part 21, first support part 22, first through hole 221, first cavity 23, second reinforcement part 24, second support part 25, third reinforcement part 26, protrusion 27, connector 3, fixing part 4, transverse rib 42, longitudinal rib 41, functional component 5, electrical connector 51, liquid cooling connector 52, pressure relief valve 53. DETAILED DESCRIPTION

[0064] The present invention is further described below by way of embodiments, but the present invention is not limited to the scope of the embodiments.

[0065] like Figures 1 to 15 As shown, this embodiment provides a battery pack 100, which includes a battery body and a battery case 1, wherein the battery case 1 includes a frame structure 11, a bottom plate 12 and a reinforcement 2; the bottom plate 12 is connected to the bottom of the frame structure 11 to form a receiving cavity 14 for receiving the battery body in the frame structure 11; in addition, a reinforcement 2 is provided in the receiving cavity 14, and the reinforcement 2 is connected to the bottom plate 12 to support the battery body. Specifically, the battery body is arranged in the receiving cavity 14, and the battery body can be protected by the receiving cavity 14, thereby increasing the service life of the battery body, and the above form can assemble the battery pack 100 into an integral module, which is convenient for the subsequent installation of the battery pack 100 in a module form. In addition, by adopting the above-mentioned structural form, a reinforcement member 2 is arranged in the accommodating cavity 14, and the reinforcement member 2 is connected to the bottom plate 12. The bottom plate 12 can be reinforced by the reinforcement member 2, thereby improving the strength of the bottom plate 12, thereby reducing the risk of the bottom plate 12 being crushed by the battery body, improving the strength and stability of the bottom plate 12 supporting the battery body, and further improving the stability and reliability of the battery body placed in the accommodating cavity 14.

[0066] In actual use, there are multiple reinforcement members 2, and the multiple reinforcement members 2 are arranged at intervals along the extension direction of the bottom plate 12. Figure 8 As shown, this embodiment takes the number of three reinforcement members 2 as an example for adaptive expression. In other embodiments, the number of reinforcement members 2 can be limited according to actual needs and is not specifically limited here.

[0067] In this embodiment, the reinforcement member 2 is connected to the upper surface of the bottom plate 12 to facilitate the reinforcement member 2 to support the battery body. In addition, in this embodiment, the reinforcement member 2 is made of a profile, and in other embodiments, the material of the reinforcement member 2 can be adjusted according to actual needs, which is not limited here.

[0068] See also Figures 4 to 11 It is understood that the reinforcement 2 includes a first reinforcement portion 21 and a first support portion 22. The first reinforcement portion 21 is connected to the bottom plate 12, and the first support portion 22 is connected to the first reinforcement portion 21 and extends from the first reinforcement portion 21 to the direction close to the battery body. The first support portion 22 is used to support the battery body. With the above-mentioned structural form, the first reinforcement portion 21 is connected to the bottom plate 12, and the first support portion 22 abuts against the battery body. The battery body can be supported by the first reinforcement portion 21 and the first support portion 22 on the bottom plate, thereby improving the strength and stability of the bottom plate 12 supporting the battery body, and further improving the stability and reliability of the battery body placed in the accommodating cavity 14. Specifically, in this embodiment, the lower surface of the first reinforcement portion 21 is connected to the upper surface of the bottom plate 12, and the first support portion 22 is connected to the upper surface of the first reinforcement portion 21, so that the reinforcement 2 can support the battery body through the first support portion 22.

[0069] In order to improve the structural strength of the reinforcement 2, the first reinforcement part 21 and the first support part 22 are preferably integrally formed. In other embodiments, the first reinforcement part 21 and the first support part 22 may also be separately provided, so that if one of the first reinforcement part 21 and the first support part 22 is damaged, only the damaged first reinforcement part 21 and the first support part 22 need to be replaced for normal use, thereby reducing the use cost.

[0070] In order to reduce the weight and use cost of the reinforcement 2, a first cavity 23 is preferably opened on the reinforcement 2, and there are multiple first support portions 22, which are spaced apart along the extension direction of the first reinforcement portion 21 to form a first cavity 23 between two adjacent first support portions 22.

[0071] In this embodiment, the number of the first support parts 22 is greater than four, so that a plurality of first cavities 23 can be formed, thereby reducing the weight and use cost of the reinforcement 2 while ensuring the overall structural strength. In other embodiments, the specific number of the first support parts 22 can be adjusted according to actual needs and is not limited here.

[0072] See also Figures 4 to 11It is understood that the reinforcement member 2 also includes a second reinforcement portion 24 and a second support portion 25, the second reinforcement portion 24 is connected to the first support portion 22, one end of the second support portion 25 is connected to the second reinforcement portion 24, and the other end of the second support portion 25 extends in a direction close to the bottom plate 12 for connection with the bottom plate 12. With the above-mentioned structural form, the second reinforcement portion 24 and the second support portion 25 further improve the strength of the bottom plate 12 while also improving the strength of the first reinforcement portion 21 and the first support portion 22, thereby further improving the strength and stability of the bottom plate 12 supporting the battery body, and further improving the stability and reliability of the battery body placed in the accommodating cavity 14.

[0073] In this embodiment, if Figure 6 , Figure 7 as well as Fig.11 As shown, for the first support portion 22 and the first reinforcement portion 21 close to the frame structure 11, the second reinforcement portion 24 is connected to a first support portion 22 farthest from the frame structure 11 among the plurality of first support portions 22. Figure 6 , Figure 7 as well as Fig.11 As shown, for the first support part 22 and the first reinforcement part 21 close to the frame structure 11, the second reinforcement part 24 is connected to the middle position of the first support part 22, thereby reducing the height of the second support part 25, thereby improving the stability and reliability of the second support part 25 supporting the bottom plate 12. In addition, with the above-mentioned structural form, the second reinforcement part 24 is connected to the middle position of the first support part 22, which can make way for the buffer 17, so that the second reinforcement part 24 and the second support part 25 can support part of the buffer 17. Figure 5 and Fig.10 As shown, for the first support portion 22 and the first reinforcement portion 21 far away from the frame structure 11, the second reinforcement portion 24 is connected to a first support portion 22 farthest from the transverse rib 42 among the plurality of first support portions 22. Figure 5 and Fig.10 As shown, the second reinforcing portion 24 is connected to the side wall 20 of the first supporting portion 22 near the top wall, so that the battery body can be supported by the second reinforcing portion 24 .

[0074] There are multiple second support parts 25, which are spaced apart along the extension direction of the second reinforcement part 24 to form a first cavity 23 between two adjacent second support parts 25. The above structure reduces the weight and use cost of the reinforcement 2 while ensuring the overall structural strength.

[0075] In this embodiment, the number of the second support parts 25 is greater than four, so that a plurality of first cavities 23 can be formed, thereby reducing the weight and use cost of the reinforcement 2 while ensuring the overall structural strength. In other embodiments, the specific number of the second support parts 25 can be adjusted according to actual needs and is not limited here.

[0076] In addition, in this embodiment, the second reinforcing portion 24 and the second supporting portion 25 are integrally formed. In other embodiments, the second reinforcing portion 24 and the second supporting portion 25 may also be separately provided, so that if one of the second reinforcing portion 24 and the second supporting portion 25 is damaged, only the damaged second reinforcing portion 24 and the second supporting portion 25 need to be replaced for normal use, thereby reducing the use cost.

[0077] like Figure 6 , Figure 7 and Fig. 9 As shown, the reinforcement member 2 also includes a third reinforcement portion 26, which is connected to the first support portion 22 close to the frame structure 11, and one end of the first support portion 22 close to the battery body is connected to the third reinforcement portion 26, and the other end is connected to the first reinforcement portion 21. With the above-mentioned structural form, the overall strength of the reinforcement member 2 close to the frame structure 11 is improved by the third reinforcement portion 26, thereby further improving the strength and stability of the bottom plate 12 supporting the battery body, thereby improving the stability and reliability of the battery body placed in the accommodating cavity 14, and at the same time, the connection between the frame structure and the bottom plate 12 can be strengthened, thereby further improving the stability of the battery box 1.

[0078] During specific use, two adjacent first supporting portions 22 are respectively connected to the first reinforcing portion 21 and the third reinforcing portion 26 to form a closed first cavity 23 between the two adjacent first supporting portions 22 , thereby further improving the structural strength of the reinforcing member 2 .

[0079] In order to improve the structural strength of the reinforcement member 2 , the first reinforcement portion 21 , the first support portion 22 and the third reinforcement portion 26 are preferably formed in one piece.

[0080] See also Figure 7 It is understood that the reinforcement member 2 also includes a protrusion 27, which is connected to the side of the third reinforcement portion 26 away from the first support portion 22 and extends from the third reinforcement portion 26 toward the battery body, and the protrusion 27 is used to support the battery body. With the above structure, the reinforcement member 2 supports the battery body through the protrusion 27.

[0081] In actual use, there are multiple protrusions 27, and the multiple protrusions 27 are arranged at intervals along the extension direction of the third reinforcing portion 26, thereby improving the stability and reliability of the protrusions 27 supporting the battery body.

[0082] like Figure 2 and Figure 5 As shown, the battery pack 100 further includes a connector 3, a first through hole 221 is provided on at least one first support portion 22 away from the frame structure 11, a second through hole 112 is provided on the bottom plate 12, and the first through hole 221 and the second through hole 112 are connected via the connector 3. With the above structure, the connection between the reinforcement member 2 away from the frame structure 11 and the bottom plate 12 is realized through the connector 3. In addition, with the above structure, the connection between the reinforcement member 2 and the bottom plate 12 is facilitated.

[0083] In this embodiment, the number of reinforcement members 2 away from the frame structure 11 is schematically expressed as an example. In other embodiments, the number of reinforcement members 2 away from the frame structure 11 can be adjusted according to actual needs, which is not limited here. In addition, in this embodiment, the connecting member 3 is a bolt. In other embodiments, the type of the connecting member 3 can also be other forms, which is not limited here.

[0084] In specific use, such as Figure 5 As shown, in order to facilitate the connection between the bottom plate 12 and the first support portion 22 , preferably, a protrusion 122 is provided on the upper surface of the bottom plate 12 , and the protrusion 122 is connected to the first support portion 22 .

[0085] like Figures 7 to 11 As shown, the setting position of the reinforcement 2 can have the following embodiments. In the first embodiment, the reinforcement 2 is set at the corresponding position of the frame structure 11 on the bottom plate 12; in the second embodiment, the reinforcement 2 is set at the corresponding position of the fixing member 4 on the bottom plate 12, specifically, the reinforcement 2 can be set at the corresponding position of the transverse rib 42 on the bottom plate 12; in the third embodiment, the reinforcement 2 is set at the corresponding position of the frame structure 11 on the bottom plate 12, and the reinforcement 2 is set at the corresponding position of the fixing member 4 on the bottom plate 12. Preferably, the reinforcement 2 is set at the corresponding position of the frame structure 11 and the fixing member 4 on the bottom plate 12, and extends in the direction away from the frame structure 11 and the fixing member 4. With the above-mentioned structural form, multiple reinforcements 2 are arranged at intervals along the extension direction of the bottom plate 12, which further improves the strength of the bottom plate 12, thereby improving the strength and stability of the bottom plate 12 supporting the battery body, and further improving the stability and reliability of the battery body placed in the accommodating cavity 14. In addition, the connection between the bottom plate 12 and the frame structure 11 and the corresponding position of the fixing member 4 are reinforced by the reinforcement member 2, thereby improving the structural strength of the battery box body.

[0086] like Figure 1 , Fig.14 and Fig.15As shown, the battery case 1 further includes an upper cover 15 and a thermostat 16. The thermostat 16 may be implemented in the following ways: in the first way, the thermostat 16 is only provided on the upper cover 15; in the second way, the thermostat 16 is only provided on the bottom plate 12; in the third way, the thermostat 16 is provided on the upper cover 15 and the bottom plate 12 to adjust the temperature in the accommodating chamber 14. With the above-mentioned structural form, by providing the thermostat 16 on the upper cover 15 and the bottom plate 12, the temperature in the accommodating chamber 14 can be adjusted by the thermostat 16. The thermostat 16 can both lower the temperature in the accommodating chamber 14 and raise the temperature in the accommodating chamber 14, which is beneficial to ensure that the temperature in the accommodating chamber 14 is at a normal temperature, thereby avoiding affecting the normal operation and performance stability of the components in the accommodating chamber 14. In particular, when facing extremely cold or extremely hot weather, the thermostat 16 can reduce the influence of the external temperature on the battery pack 100, which is beneficial to increase the usable scenarios of the battery pack 100 and improve the versatility of the battery pack 100. When both the upper cover 15 and the bottom plate 12 are provided with a temperature regulating member 16 , it is beneficial to ensure the uniformity of temperature regulation of the battery pack 100 , thereby ensuring the functional integrity of the battery pack 100 and increasing the service life of the battery pack 100 .

[0087] like Figures 12 to 15 As shown, the temperature regulating plate 161 includes a plate body 1612 and a protective plate 1613. The plate body 1612 is laid on the upper cover 15 and the bottom plate 12. A flow channel 1611 is provided on the side of the plate body 1612 facing away from the upper cover 15 or the bottom plate 12. The flow channel 1611 is recessed toward the upper cover 15 or the bottom plate 12. The protective plate 1613 at least covers the recessed area on the plate body 1612 to form a closed flow channel 1611. The plate body 1612 and the protective plate 1613 together form a closed flow channel 1611, which is beneficial to prevent the temperature regulating medium from overflowing. At the same time, the temperature regulating plate 161 is formed by installing the separate plate body 1612 and the protective plate 1613, which is beneficial to improve the convenience during manufacturing. If a closed flow channel 1611 is directly opened in the integral temperature regulating plate 161, the manufacturing difficulty is high.

[0088] In specific use, the temperature regulating member 16 can increase or decrease the temperature of the battery body. In this embodiment, the temperature reducing member is a liquid cooling plate, so that the temperature in the accommodation chamber 14 can be reduced by the liquid cooling plate. In other embodiments, the temperature regulating member 16 can also be in other forms, which are not limited here.

[0089] like Figure 6 As shown, the battery pack 100 also includes a buffer 17, which is arranged between the temperature regulating component 16 and the bottom plate 12, so as to provide buffering for the battery body and prevent the battery body from being damaged by collision during transportation, thereby further improving the safety and service life of the battery body.

[0090] In this embodiment, the buffer member 17 is a buffer foam. In other embodiments, the type of the buffer member 17 can be adjusted according to actual needs and is not limited here.

[0091] like Figure 6 As shown, one side of the thermostat 16 is connected to the reinforcement 2 and the end of the buffer 17 away from the bottom plate 12, and the other side is connected to the battery body. With the above structure, the thermostat 16 is arranged on the side of the buffer 17 and the reinforcement 2 close to the battery body, which improves the efficiency of the thermostat 16 in regulating the temperature of the battery body in the accommodating cavity 14. In this embodiment, the thermostat 16 is in direct contact with the battery body, thereby further improving the efficiency of the thermostat 16 in regulating the temperature of the battery body in the accommodating cavity 14.

[0092] In a specific embodiment, Figure 6 As shown, the lower plate structure of the battery box 1 includes: a bottom plate 12 at the lower layer, a buffer 17 and a reinforcement 2 at the middle layer, and a thermostat 16 at the upper layer, wherein the lower side of the thermostat 16 is respectively connected to the reinforcement 2 and the end of the buffer 17 away from the bottom plate 12, and the upper side of the thermostat 16 is connected to the battery body. The reinforcement 2 is laid on the bottom plate 12 at the corresponding position of the frame structure 11 and the fixing member 4, and extends in the direction away from the frame structure 11 and the fixing member 4. The buffer 17 is laid between adjacent reinforcements 2 on the bottom plate 12.

[0093] like Figure 6 and Figure 7 As shown, a groove 121 is provided on the first surface of the bottom plate 12 close to the battery body, and the groove 121 is used to accommodate the reinforcement member 2. The above structure facilitates the placement of the reinforcement member 2. Specifically, the four sides of the bottom plate 12 are connected to the frame structure 11 by bolts, and the groove 121 is provided on the upper surface of the bottom plate 12 away from the four sides.

[0094] In this embodiment, the groove 121 is formed by stamping the bottom plate 12, thereby improving the strength of the bottom plate 12. In other embodiments, the processing method of the groove 121 can be adjusted according to actual needs, and is not limited here.

[0095] like Figure 1 and Figure 2As shown, the battery box 1 also includes a front beam 18, a rear beam 19 and two side walls 20. The front beam 18 and the rear beam 19 are respectively connected to the front and rear ends of the two side walls 20, so that the front beam 18, the rear beam 19 and the two side walls 20 are surrounded by a frame structure 11; the front beam 18, the rear beam 19 and the two side walls 20 have a second cavity inside. With the above-mentioned structural form, the battery body can be protected by the frame structure 11, thereby increasing the service life of the battery body. In addition, the front beam 18, the rear beam 19 and the two side walls 20 have a second cavity inside, so that while ensuring that the overall structural strength of the battery pack 100 meets the requirements, the material used is reduced to achieve the weight reduction effect of the battery pack 100.

[0096] like Figure 3 As shown, the battery box 1 also includes a fixing member 4, which is located in the frame structure 11, and the fixing member 4 is connected to the front beam 18, the rear beam 19 and the two side walls 20. With the above-mentioned structural form, the fixing member 4 can effectively strengthen the structural strength of the battery box 1, effectively avoid the deformation of the battery pack 100, improve the anti-seismic performance of the battery pack 100, and greatly improve the safety and stability of the battery pack 100. At the same time, the fixing member 4 is located in the frame structure 11, which makes the structure more compact and does not occupy additional space.

[0097] The fixing member 4 includes transverse ribs 42 and longitudinal ribs 41 that are staggered and connected to each other, and the above-mentioned structural form has the characteristics of simple structure, convenient processing and manufacturing, and reduced use cost. In this embodiment, the number of longitudinal ribs 41 is one, and the number of transverse ribs 42 is two. The longitudinal rib 41 is connected to one of the transverse ribs 42 in a cross shape, and the other transverse rib 42 is connected to one end of the longitudinal rib 41, thereby further improving the structural strength and stability of the fixing member 4.

[0098] In addition, in the present embodiment, the reinforcement member 2 is disposed at the corresponding positions of the front beam 18, the rear beam 19 and the transverse rib 42 in the fixing member 4 on the bottom plate 12. Specifically, for the reinforcement member 2 disposed at the corresponding positions of the front beam 18 and the rear beam 19 on the bottom plate 12, the reinforcement member 2 is connected to the front beam 18 and the rear beam 19, so that the connection position between the bottom plate 12 and the front beam 18 and the rear beam 19 can be strengthened by the reinforcement member 2; for the reinforcement member 2 disposed at the corresponding position of the transverse rib 42 in the fixing member 4 on the bottom plate 12, the reinforcement member 2 can cover the transverse rib 42 in the projection in the height direction of the battery pack 100, so that the connection position between the transverse rib 42 and the side wall 20 and the bottom plate 12 can be strengthened by the reinforcement member 2, thereby improving the structural strength of the battery box body 1.

[0099] In order to reduce the weight and use cost of the fixing member 4 and ensure that the battery pack 100 has a weight reduction effect, the fixing member 4 preferably has a third cavity inside.

[0100] like Figure 1 As shown, the battery pack 100 further includes a plurality of functional components 5, the battery box 1 further includes a plurality of mounting seats 31, a plurality of mounting openings 111 are provided on the frame structure 11, the mounting seats 31 are embedded in the mounting openings 111, and the functional components 5 are connected to the mounting seats 31. With the above-mentioned structural form, the mounting seats 31 are embedded in the mounting openings 111 and connected to the frame structure 11, and the functional components 5 are installed through the mounting seats 31, so that the functional components 5 are stably installed on the frame structure 11, and the installation strength requirements of the functional components 5 are guaranteed, thereby effectively improving the connection stability of the overall structure of the battery pack 100 and the anti-seismic performance of the battery pack 100. In addition, with the above-mentioned structural form, the electric connector 51 and the liquid cooling connector 52 are both connected to the front beam 18, and the electric connector 51 and the liquid cooling connector 52 are respectively plugged in or disconnected with the vehicle-end electric connector and the vehicle-end liquid cooling connector on the electric vehicle, thereby realizing plugging and disconnecting synchronously, making the plugging between the electric connector and the liquid cooling connector and the vehicle-end electric connector and the vehicle-end liquid cooling connector on the electric vehicle more stable and reliable, effectively avoiding the problem of unstable connection; and realizing a more compact overall structure of the battery pack. At the same time, by installing a pressure relief valve 53 on the front beam 18 and / or the rear beam 19, the pressure at the front end and / or the rear end of the battery pack 100 is relieved, effectively preventing the internal pressure of the battery pack 100 from being too high, and having higher safety and stability.

[0101] The functional component 5 includes an electrical connector 51, a liquid cooling connector 52 and at least one pressure relief valve 53. The electrical connector 51 and the liquid cooling connector 52 are both connected to the frame structure 11, and each pressure relief valve 53 is connected to the frame structure 11. The above structure is adopted to realize the electrical connection of the battery pack 100, liquid cooling and temperature reduction, and prevent excessive internal pressure, and the safety and stability are higher.

[0102] The present embodiment continues to provide an electric vehicle, which includes a battery pack 100 as any one of the above items. Specifically, the battery pack 100 is applied to the electric vehicle, so that the battery body can be arranged in the accommodating cavity 14, and the battery body can be protected by the accommodating cavity 14, thereby increasing the service life of the battery body, and the above form can assemble the battery pack 100 into an integral module, which is convenient for the subsequent installation of the battery pack 100 in a module form. In addition, by adopting the above structural form, a reinforcement member 2 is arranged in the accommodating cavity 14, and the reinforcement member 2 is connected to the bottom plate 12, the bottom plate 12 can be reinforced by the reinforcement member 2, and the strength of the bottom plate 12 is increased, thereby reducing the risk of the bottom plate 12 being crushed by the battery body, and increasing the strength and stability of the bottom plate 12 supporting the battery body, thereby increasing the stability and reliability of the battery body placed in the accommodating cavity 14.

[0103] Although the specific implementations of the utility model are described above, those skilled in the art should understand that this is only an example, and the protection scope of the utility model is defined by the attached claims. Those skilled in the art can make various changes or modifications to these implementations without departing from the principle and essence of the utility model, but these changes and modifications fall within the protection scope of the utility model.

Claims

1. A battery pack, characterized in that: The battery pack includes a battery body and a battery box, and the battery box includes a frame structure, a bottom plate and a reinforcement member; the bottom plate is connected to the bottom of the frame structure to form a receiving cavity in the frame structure for receiving the battery body; The reinforcing member is arranged in the accommodating cavity and is connected to the bottom plate for supporting the battery body.

2. The battery pack according to claim 1, characterized in that: The reinforcement member includes a first reinforcement portion and a first support portion, the first reinforcement portion is connected to the bottom plate, the first support portion is connected to the first reinforcement portion and extends from the first reinforcement portion toward the battery body, and the first support portion is used to support the battery body.

3. The battery pack according to claim 2, characterized in that: The reinforcement member is provided with a first cavity. There are a plurality of first supporting portions, which are arranged at intervals along an extension direction of the first reinforcement portion to form the first cavity between two adjacent first supporting portions.

4. The battery pack according to claim 3, characterized in that: The reinforcement member also includes a second reinforcement portion and a second support portion, the second reinforcement portion is connected to the first support portion, one end of the second support portion is connected to the second reinforcement portion, and the other end of the second support portion extends toward the direction close to the bottom plate for connection with the bottom plate.

5. The battery pack according to claim 4, characterized in that: There are multiple second support parts, and the multiple second support parts are arranged at intervals along the extension direction of the second reinforcement part to form the first cavity between two adjacent second support parts.

6. The battery pack according to claim 2, characterized in that: The reinforcement also includes a third reinforcement portion, which is connected to the first support portion close to the frame structure. One end of the first support portion close to the battery body is connected to the third reinforcement portion, and the other end is connected to the first reinforcement portion.

7. The battery pack according to claim 6, characterized in that: The reinforcement member further includes a protrusion, which is connected to a side of the third reinforcement portion away from the first support portion and extends from the third reinforcement portion toward the battery body, and is used to support the battery body.

8. The battery pack according to claim 2, characterized in that: The battery pack also includes a connector, a first through hole is formed on at least one of the first support portions away from the frame structure, a second through hole is formed on the bottom plate, and the first through hole and the second through hole are connected via the connector.

9. The battery pack according to claim 1, characterized in that: There are multiple reinforcement members, and the multiple reinforcement members are arranged at intervals along the extension direction of the bottom plate; And / or, the reinforcing member is arranged at a corresponding position of the frame structure and / or the fixing member on the bottom plate, and extends in a direction away from the frame structure and / or the fixing member.

10. The battery pack according to claim 1, wherein: The battery box body further comprises an upper cover and a temperature regulating member, wherein the temperature regulating member is arranged on the upper cover and / or the bottom plate and is used to regulate the temperature in the accommodating cavity; And / or, the battery pack further includes a buffer component, and the buffer component is arranged between the temperature regulating component and the bottom plate.

11. The battery pack according to claim 10, characterized in that: One side of the temperature regulating component is connected to the reinforcing component and an end of the buffer component away from the bottom plate, and the other side is connected to the battery body.

12. The battery pack according to claim 1, wherein: The bottom plate is provided with a groove on a first surface close to the battery body, and the groove is used to accommodate the reinforcement.

13. The battery pack according to claim 1, wherein: The battery box also includes a front beam, a rear beam and two side walls, wherein the front beam and the rear beam are respectively connected to the front and rear ends of the two side walls so that the front beam, the rear beam and the two side walls together form the frame structure; the front beam, the rear beam and the two side walls all have a second cavity inside.

14. The battery pack according to claim 13, wherein: The battery box also includes a fixing member, which is located in the frame structure and connected to the front beam, the rear beam and the two side walls.

15. The battery pack according to claim 14, characterized in that: The fixing member comprises transverse ribs and longitudinal ribs which are staggered and connected to each other; and / or, the fixing member has a third cavity inside.

16. The battery pack according to claim 1, wherein: The battery pack further includes a plurality of functional components, the battery box further includes a plurality of mounting seats, the frame structure is provided with a plurality of mounting openings, the mounting seats are embedded in the mounting openings, and the functional components are connected to the mounting seats.

17. The battery pack according to claim 16, wherein: The functional component comprises an electrical connector, a liquid cooling connector and at least one pressure relief valve. The electrical connector and the liquid cooling connector are both connected to the frame structure, and each of the pressure relief valves is respectively connected to the frame structure.

18. An electric vehicle, characterized in that: It comprises a battery pack as described in any one of claims 1-17.

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