Battery pack and electric automobile comprising same

Abstract

The battery pack comprises a battery body and a battery box body, the battery box body comprises an upper cover, a bottom plate and a containing cavity used for containing the battery body, the upper cover and the bottom plate are arranged at the top and the bottom of the containing cavity respectively, a temperature adjusting piece is arranged on the upper cover and / or the bottom plate, and the temperature adjusting piece is connected with the battery body. The temperature adjusting piece is used for adjusting the temperature in the containing cavity. 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. The temperature adjusting part is used for adjusting the temperature in the accommodating cavity, so that the temperature of the battery body can be changed through the temperature adjusting part, the temperature of the battery body can be kept in a normal range, the use safety of the battery body is improved, the service life of the battery body is prolonged, and the universality of the battery pack in different weathers or working environments is improved.

Description

Technical Field

[0001] The utility model discloses 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, and the battery body is arranged in the battery box, so that the battery body can be protected by the battery box. However, the battery body is affected by the weather or working environment, and the temperature of the battery body itself will be higher or lower than the normal temperature range. Working at this temperature will reduce the service life of the battery body and affect the normal operation and performance stability of 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 temperature of the battery body itself will be higher or lower than the normal temperature range due to the influence of weather or working environment. Working at this temperature will reduce the service life of the battery body and affect the normal operation and performance stability of the battery body. A battery pack and an electric vehicle containing the same are provided.

[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. The battery box includes an upper cover, a bottom plate and a receiving cavity for receiving the battery body. The upper cover and the bottom plate are respectively arranged on the top and bottom of the receiving cavity. A temperature regulating component is provided on the upper cover and / or the bottom plate, and the temperature regulating component is used to adjust the temperature in the receiving cavity.

[0007] In this solution, the above-mentioned structural form is adopted, and the battery body is arranged in the accommodating cavity. The battery body can be protected by the accommodating cavity, thereby increasing the service life of the battery body, and the above-mentioned 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-mentioned structural form, the thermostat can both lower the temperature in the accommodating cavity and raise the temperature in the accommodating cavity, which is conducive to ensuring that the temperature in the accommodating cavity is at a normal temperature, so as to avoid the working state of the battery body and other components in the accommodating cavity being affected by the weather or working environment, thereby ensuring the normal operation and performance stability of the battery body and other components in the accommodating cavity, and improving the safety and service life of the battery body and other components in the accommodating cavity. Especially when facing extremely cold or extremely hot weather, the thermostat can reduce the impact of the external temperature on the battery pack, which is conducive to increasing the use scenarios of the battery pack and improving the versatility of the battery pack. When both the upper cover and the bottom plate are provided with thermostats, it is conducive to ensuring the uniformity of the temperature regulation of the battery pack, thereby ensuring the functional integrity of the battery pack and increasing the service life of the battery pack.

[0008] Preferably, the temperature regulating component includes a temperature regulating plate, on which a flow channel is provided, and the flow channel is used to circulate the temperature regulating medium; the inlet and outlet of the flow channel are respectively provided with connecting pipes, and the battery pack also includes a temperature regulating connector, and the temperature regulating connector is connected to the flow channel through the connecting pipe.

[0009] In this solution, the above-mentioned structural form is adopted. When the temperature regulating medium flows in the flow channel, the surface temperature of the upper cover and the bottom plate can be reduced or increased to reduce or increase the temperature in the receiving cavity. In addition, the temperature regulating element is set in a plate shape, which will not occupy too much space in the height direction of the battery box, which is conducive to ensuring that the size of the battery box is within a reasonable range; the temperature regulating connector is connected to the flow channel of the temperature regulating element through a connecting pipe, so as to control the working mode of the temperature regulating connector to a liquid cooling mode or a heating mode according to the actual application scenario, so as to control the temperature of the temperature regulating medium in the flow channel through the temperature regulating connector, thereby reducing or increasing the temperature in the receiving cavity.

[0010] In addition, the inlet and outlet of the flow channel are respectively provided with connecting pipes, and the two connecting pipes can respectively realize the inflow and discharge of the temperature control medium, that is, the inflow and discharge of the temperature control medium can be carried out simultaneously, so that the temperature control medium can be continuously transported to the flow channel to replace the temperature control medium originally in the flow channel, thereby realizing that the temperature control component continuously controls the temperature of the accommodating cavity.

[0011] Preferably, the temperature regulating plate includes a plate body and a protective plate, the plate body is laid on the upper cover and / or the bottom plate; the flow channel is provided on the side of the plate body facing away from the upper cover or the bottom plate, and the flow channel is recessed in a direction close to the upper cover or the bottom plate; the protective plate at least covers the recessed area on the plate body to form a closed flow channel.

[0012] In this solution, the above-mentioned structural form is adopted, and the plate body and the protective plate together form a closed flow channel, which is conducive to preventing the temperature control medium from overflowing. At the same time, the temperature control plate is formed by assembling the separate plate body and the protective plate, which is conducive to improving the convenience during manufacturing. If a closed flow channel is directly opened in the integral temperature control plate, the manufacturing difficulty is high.

[0013] Preferably, the flow channel includes a plurality of branches connected in sequence, the branches are opened at least in the first area of ​​the temperature regulating plate, and the shape of the branches is a "X" shape; preferably, the plurality of branches are arranged at intervals along the length direction of the temperature regulating plate; and / or each of the branches extends from one side of the temperature regulating plate to the other side of the temperature regulating plate along the width direction of the temperature regulating plate.

[0014] In the present solution, the above-mentioned structural form is adopted, and multiple branches are arranged at intervals along the length direction of the temperature regulating plate, and each branch extends from one side of the temperature regulating plate to the other side of the temperature regulating plate along the width direction of the temperature regulating plate, thereby further increasing the distribution area of ​​the branches, thereby making the area for the temperature regulating medium to flow wider, thereby improving the temperature regulating efficiency of the temperature regulating medium on the entire battery body.

[0015] Preferably, the inlet and outlet of the flow channel are located on the same side of the temperature regulating plate, and the flow channel is arranged from the inlet around at least the top and / or bottom of the battery body to reach the outlet.

[0016] In this solution, the temperature regulating medium flows into the flow channel from the inlet, flows through the flow channel and then flows out from the outlet. The inlet and outlet are arranged on the same side of the temperature regulating plate, which increases the flow path of the flow channel, thereby increasing the flow area of ​​the temperature regulating medium and improving the temperature regulating efficiency of the temperature regulating medium on the battery body as a whole. In addition, the above-mentioned structural form facilitates the connection between the temperature regulating connector and the flow channel.

[0017] Preferably, the end of the connecting pipe close to the thermostatic connector is a hose, and the end of the connecting pipe close to the thermostatic connector is sleeved on the interface of the thermostatic connector through the hose;

[0018] And / or, the temperature regulating plate is provided with a recess on a side facing away from and / or facing the battery body, and the recess is used to accommodate an end of the connecting tube close to the battery body;

[0019] And / or, the temperature regulating connector is connected to at least one outer wall of the battery box, and the material of the outer wall on which the temperature regulating connector is installed is a profile;

[0020] And / or, the temperature regulating component further includes a circulation pipeline, the circulation pipeline is laid in the flow channel, and the temperature regulating medium flows in the circulation pipeline.

[0021] In the present solution, one end of the connecting tube close to the thermostatic connector is configured as a hose, which facilitates the floating of the thermostatic connector. By providing a recess, interference between the thermostatic plate and the battery body and the connecting tube can be prevented, thereby ensuring that the thermostatic plate and the battery body can work normally. In addition, providing a recess can also reduce the height dimension of the battery pack and improve the compactness of the battery pack structure. The side wall on which the thermostatic connector is installed is made of profiles, which reduces the complexity of the processing technology and has the characteristics of low cost. Moreover, the outer wall made of profiles has higher structural strength, so that the outer wall on which the thermostatic connector is installed has higher load-bearing capacity, thereby improving the stability and shock resistance of the battery pack. When the thermostatic medium flows in the circulation pipe, the circulation pipe is used to accommodate the thermostatic medium, which solves the sealing problem and reduces the sealing requirements between the protective plate and the plate body.

[0022] Preferably, the battery box further comprises a reinforcing member disposed between the temperature regulating member and the bottom plate, one end of the reinforcing member is connected to the bottom plate, and the other end of the reinforcing member extends in a direction close to the battery body, for supporting the battery body;

[0023] And / or, the battery box further includes a buffer component, and the buffer component is arranged between the temperature regulating component and the bottom plate.

[0024] In this solution, the bottom plate is reinforced by reinforcing members, which improves the strength of the bottom plate, thereby reducing the risk of the bottom plate being crushed by the battery body, 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. The buffer can provide a buffer 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.

[0025] Preferably, the battery box also includes a mounting seat, a mounting opening is opened on the outer wall for mounting the thermostatic connector, the mounting seat is embedded in the mounting opening and connected to the outer wall, and the thermostatic connector is connected to the mounting seat.

[0026] In this solution, the mounting seat is embedded in the mounting opening and connected to the outer wall, and the thermostatic connector is installed through the mounting seat so that the thermostatic connector is firmly installed on the outer wall of the battery box, thereby ensuring the installation strength requirements of the thermostatic connector, thereby effectively improving the connection stability of the overall structure of the battery pack and the seismic performance of the battery pack.

[0027] Preferably, the middle area of ​​the mounting seat has a through hole for communicating with the interior of the battery case, and the mounting seat is provided with a plurality of connecting holes, which are distributed on the outer edge of the through hole. The temperature control connector is detachably connected to the plurality of connecting holes on the mounting seat and connected to the battery body after passing through the through holes.

[0028] In this solution, the above-mentioned structural form is adopted, and the thermostatic connector passes through the through hole from the outside of the battery pack and extends into the battery pack. The through hole makes it easy for the thermostatic connector to pass through the battery box and connect with the battery body. The thermostatic connector passes through the through hole and is connected to multiple connection holes, and the multiple connection holes are distributed on the outer edge of the through hole, so that the thermostatic connector can be fixed all around, and the installation connection is stable and reliable. At the same time, it is very convenient to install and disassemble through multiple connection holes, and the structure is simple and the processing and manufacturing are very convenient.

[0029] Preferably, the outer wall of the battery box includes a front beam, a rear beam and two side walls, 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 side walls are combined to form a frame structure, the upper cover and the bottom plate are respectively covered on the top and bottom surfaces of the frame structure to form the accommodating cavity; the front beam and / or the rear beam have a cavity inside.

[0030] In this solution, the above-mentioned 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 and / or the rear beam and the two side walls have cavities inside, so that the material used can be reduced while ensuring that the overall structural strength of the battery pack meets the requirements, thereby achieving the effect of reducing the weight of the battery pack. At the same time, the frame structure is formed by the front beam, the rear beam and the two side walls, thereby strengthening the battery box and achieving higher stability.

[0031] Preferably, the battery box further comprises a fixing member, the fixing member is located in the frame structure, and the fixing member is connected to the front beam, the rear beam and the two side walls;

[0032] Preferably, the battery box further comprises a reinforcing member, which 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.

[0033] 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, have high anti-seismic performance, and greatly improve the safety and stability of the battery pack. In addition, the connection between the bottom plate and the frame structure and the corresponding position of the fixing parts are strengthened by the reinforcement parts, thereby improving the structural strength of the battery box body.

[0034] Preferably, the battery pack also includes a plurality of lock connection structures; a side wall bracket is provided on the side wall, and the side wall bracket includes a bracket body; a plurality of reinforcing ribs are provided on the outer side of the bracket body facing away from the battery body, and the plurality of reinforcing ribs are arranged at intervals along the length direction of the battery pack, and the lock connection structure is arranged between the reinforcing ribs.

[0035] In this solution, the above-mentioned structural form is adopted, and multiple outwardly protruding reinforcing ribs are provided on the outer side of the bracket body facing away from the battery body, and the lock connection structure is arranged between the reinforcing ribs, thereby effectively strengthening the connection strength between the multiple lock connection structures and the side wall bracket, meeting the support strength requirements of the battery pack, and ensuring the locking accuracy. At the same time, multiple reinforcing ribs are arranged at intervals along the length direction of the bracket body, so as to reduce the weight of the side wall bracket on the basis of meeting the load-bearing strength of the side wall bracket, reduce the material used, and achieve the effect of reducing the weight of the battery pack, so as to achieve the effect of simultaneously taking into account the weight reduction of the battery pack and improving the support strength of the side wall bracket; and the processing technology is simple and the cost is low.

[0036] Preferably, the side wall bracket further comprises a thickened portion, which is arranged in the bracket body and is arranged corresponding to the reinforcing rib on the outer side of the bracket body;

[0037] And / or, the outer side of the bracket body facing away from the battery body has a first weight-reducing groove recessed inwardly, the first weight-reducing groove is arranged between two adjacent reinforcing ribs, one end of the lock connection structure extends into the first weight-reducing groove and is connected to the bracket body, and the other end of the lock connection structure is exposed from the outer wall surface of the bracket body and is used for locking connection with the locking mechanism on the quick-change bracket;

[0038] And / or, the side wall bracket further includes a protective plate, one end of which is connected to the outer side of the bracket body facing away from the battery body, and the other end of the protective plate extends outwardly in a horizontal direction.

[0039] In the present solution, the above-mentioned structural form is adopted, and the thickened portion is arranged in the bracket body and corresponds to the reinforcing ribs on the outside of the bracket body, so that the thickened portion and the reinforcing ribs can strengthen the inner and outer sides of the bracket body, making the structure of the bracket body more stable and reliable to meet the supporting strength requirements of the battery pack; at the same time, the thickened portion is arranged in the bracket body, does not occupy additional space, and realizes a more compact structure.

[0040] The lock connection structure extends into the first weight-reducing groove to reduce the gap between the side wall bracket and the quick-change bracket, and the lock connection structure and the outer side of the bracket body have a large contact area, and the installation connection has high stability, thereby meeting the support strength requirements of the battery pack and ensuring the locking accuracy. At the same time, the first weight-reducing groove plays a weight-reducing role, realizing the overall weight reduction of the battery pack and reducing the material consumption, and the first weight-reducing groove has a simple structure and is easy to process and manufacture.

[0041] The protective plate has a protective shielding function. The protective plate will be used to shield the gap between the battery pack and the quick-change bracket, effectively preventing impurities from entering the gap between the battery pack and the quick-change bracket, greatly improving the safety and stability of the electric vehicle.

[0042] Preferably, the bracket body has a plurality of weight-reducing cavities, the thickened portion is arranged in the weight-reducing cavity and connected to the inner wall of the bracket body close to the reinforcing rib, and the locking connection structure passes through the side wall of the bracket body and is connected to the thickened portion.

[0043] In this solution, the above-mentioned structural form is adopted, and multiple weight-reducing cavities have a weight-reducing effect, which can effectively reduce the overall weight of the side wall bracket, so that the overall weight of the battery pack can be reduced and the material can be reduced while ensuring that the overall structural strength of the battery pack meets the requirements. Compared with only one larger weight-reducing cavity, the use of multiple weight-reducing cavities can utilize the connection structure between them to enhance the support strength of the side wall bracket, and further enhance the structural strength of the side wall bracket. At the same time, by setting the thickened part in the weight-reducing cavity, it is ensured that the connection of the lock connection structure is more stable and reliable, and does not occupy additional space; the thickened part is connected to the inner wall of the bracket body close to the reinforcing rib, and the connection structure between the thickened part and the bracket body can be used to enhance the load-bearing strength of the side wall bracket, so that when the lock connection structure passes through the side wall of the bracket body and is connected to the thickened part, it can ensure that the connection of the lock connection structure is more stable and reliable.

[0044] The utility model further discloses an electric vehicle, which comprises the battery pack as described above.

[0045] 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 improves 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, with the above structural form, the thermostat can both lower the temperature in the accommodating cavity and raise the temperature in the accommodating cavity, which is conducive to ensuring that the temperature in the accommodating cavity is at a normal temperature, so as to avoid the working state of the battery body and other components in the accommodating cavity being affected by the weather or working environment, thereby ensuring the normal operation and performance stability of the battery body and other components in the accommodating cavity, and improving the safety and service life of the battery body and other components in the accommodating cavity. Especially when facing extremely cold or extremely hot weather, the thermostat can reduce the impact of the external temperature on the battery pack, which is conducive to increasing the use scenarios of the battery pack and improving the versatility of the battery pack. When both the upper cover and the bottom plate are provided with thermostats, it is conducive to ensuring 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.

[0046] The positive and progressive effect of the utility model is that the battery body is arranged in the accommodating cavity, and the battery body can be protected by the accommodating cavity, thereby increasing 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, with the above structural form, the thermostat can both lower the temperature in the accommodating cavity and raise the temperature in the accommodating cavity, which is conducive to ensuring that the temperature in the accommodating cavity is at a normal temperature, so as to avoid the working state of the battery body and other components in the accommodating cavity being affected by the weather or working environment, thereby ensuring the normal operation and performance stability of the battery body and other components in the accommodating cavity, and improving the safety and service life of the battery body and other components in the accommodating cavity. Especially when facing extremely cold or extremely hot weather, the thermostat can reduce the impact of the external temperature on the battery pack, which is conducive to increasing the use scenarios of the battery pack and improving the versatility of the battery pack. When both the upper cover and the bottom plate are provided with thermostats, it is conducive to ensuring the uniformity of the temperature regulation of the battery pack, thereby ensuring the functional integrity of the battery pack and increasing the service life of the battery pack. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] Figure 1 It is a schematic structural diagram 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 pack according to an embodiment of the utility model, in which the closing cover is hidden.

[0049] Figure 3 It is a structural schematic diagram of the plate body at the upper cover of an embodiment of the utility model.

[0050] Figure 4It 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.

[0051] Figure 5 It is a structural schematic diagram of the plate body at the upper cover of an embodiment of the utility model when viewed from bottom.

[0052] Figure 6 It is a schematic structural diagram of the plate body at the bottom plate of an embodiment of the utility model.

[0053] Figure 7 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.

[0054] Figure 8 It is a schematic structural diagram of the flow channel of an embodiment of the utility model.

[0055] Fig. 9 This is a schematic diagram of the structure of the battery box of an embodiment of the utility model, in which the upper cover is hidden.

[0056] Fig.10 It is a schematic diagram of the cross-sectional structure of the battery box according to an embodiment of the utility model.

[0057] Fig.11 The structure of the reinforcement member of the utility model embodiment is schematically shown Figure 1 .

[0058] Fig.12 The structure of the reinforcement member of the utility model embodiment is schematically shown Figure 2 .

[0059] Fig.13 It is a partial three-dimensional structural schematic diagram of a reinforcement member of a preferred embodiment of the utility model.

[0060] Fig.14 The figure is a schematic cross-sectional view of a battery box according to a preferred embodiment of the present invention.

[0061] Fig.15 for Fig.14 A partial enlarged schematic diagram of point B in the middle. Fig.16 It is a structural schematic diagram of the battery pack from another perspective of an embodiment of the utility model.

[0062] Fig.17 This is a schematic diagram of the three-dimensional structure of the battery pack according to an embodiment of the utility model from another perspective.

[0063] Fig.18 It is a partial enlarged schematic diagram of a battery pack according to an embodiment of the utility model.

[0064] Fig.19 It is a schematic diagram of the internal structure of the battery box at the electrical connector of an embodiment of the utility model.

[0065] Fig. 20 It is a schematic diagram of the internal structure of the battery pack at the lock connection structure of an embodiment of the utility model.

[0066] Fig.21 It is a schematic diagram of the internal structure of the battery pack at the guide and positioning mechanism of an embodiment of the utility model.

[0067] Description of reference numerals:

[0068] Battery pack 100, battery box 1, frame structure 11, bottom plate 12, accommodating cavity 14, upper cover 15, opening 151, first opening 1511, second opening 1512, closing cover 152, first sealing member 153, thermostat 16, thermostat plate 161, flow channel 1611, branch 16111, plate body 1612, protective plate 1613, connecting pipe 162, buffer member 17, front beam 18, mounting port 181, second cavity 1811, rear beam 19, maintenance port 191, side wall 20, maintenance compartment 201, side wall bracket 2011, bracket body 20111, reinforcing rib 201111, upper reinforcing rib 2011111, lower reinforcing rib 2011112, protective plate 2011113, notch 20111131, thickened portion 2 02, first connecting hole 2021, weight-reducing cavity 203, outer shell 204, transverse partition 205, longitudinal partition 206, inclined partition 207, first weight-reducing groove 208, second weight-reducing groove 209, first through hole 211, reinforcement 2, first reinforcement part 21, first support part 22, first cavity 23, second reinforcement part 24, second support part 25, third reinforcement part 26, protrusion 27, mounting seat 3, abutment part 31, connecting part 32, through hole 33, connecting hole 34, fixing part 4, transverse rib 41, longitudinal rib 42, functional part 5, electrical connector 51, thermostatic connector 52, pressure relief valve 53, sealing groove 6, lock connection structure 7, lock mounting seat 71, lock shaft 72, support shaft 73, guide positioning mechanism 8, positioning block 81, fastening component 82. DETAILED DESCRIPTION

[0069] The present invention is further described below by way of embodiments, but the present invention is not limited to the scope of the embodiments.

[0070] like Figures 1 to 21As shown, this embodiment provides a battery pack 100, which includes a battery body and a battery case 1. The battery case 1 includes an upper cover 15, a bottom plate 12, and a receiving cavity 14 for receiving the battery body. The upper cover 15 and the bottom plate 12 are respectively arranged at the top and the bottom of the receiving cavity 14. The upper cover 15 and the bottom plate 12 are provided with a thermostat 16, which is used to adjust the temperature in the receiving cavity 14. The battery body is arranged in the receiving cavity 14, and the battery body can be protected by the receiving cavity 14, thereby improving the service life of the battery body. In addition, 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, with the above-mentioned structural form, the thermostat 16 can both lower the temperature in the accommodating chamber 14 and raise the temperature in the accommodating chamber 14, which is conducive to ensuring that the temperature in the accommodating chamber 14 is at a normal temperature, so as to avoid the working state of the battery body and other components in the accommodating chamber 14 being affected by the weather or working environment, thereby ensuring the normal operation and performance stability of the battery body and other components in the accommodating chamber 14, and improving the safety and service life of the battery body and other components in the accommodating chamber 14. In particular, when facing extremely cold or extremely hot weather, the thermostat 16 can reduce the impact of the external temperature on the battery pack 100, which is conducive to increasing the usable scenarios of the battery pack 100 and improving the versatility of the battery pack 100. When both the upper cover 15 and the bottom plate 12 are provided with the thermostat 16, it is conducive to ensuring the uniformity of the temperature regulation of the battery pack 100, thereby ensuring the functional integrity of the battery pack 100 and improving the service life of the battery pack 100. Among them, both the upper cover 15 and the bottom plate 12 are provided with the thermostat 16, which is conducive to ensuring the uniformity of the temperature regulation of the battery pack 100, thereby ensuring the functional integrity and service life of the battery pack 100. In other embodiments, the temperature regulating component 16 may be provided only on the upper cover 15 , or may be provided only on the bottom plate 12 .

[0071] like Figure 3 , Figure 4 , Figure 6 and Figure 7As shown, the thermostat 16 includes a thermostat plate 161, and a flow channel 1611 is provided on the thermostat plate 161. The flow channel 1611 is used to circulate the thermostat medium, so that when the thermostat medium circulates in the flow channel 1611, the surface temperature of the upper cover 15 and the bottom plate 12 can be reduced or increased to reduce or increase the temperature in the accommodating cavity 14. In addition, the thermostat 16 is set in a plate shape, which will not occupy too much space in the height direction of the battery box 1, which is conducive to ensuring that the size of the battery box 1 is within a reasonable range. The thermostat connector 52 is connected to the flow channel 1611 of the thermostat 16 through a connecting pipe 162, so as to control the working mode of the thermostat connector 52 to a liquid cooling mode or a heating mode according to the actual application scenario, so as to control the temperature of the thermostat medium in the flow channel 1611 through the thermostat connector 52, so as to reduce or increase the temperature in the accommodating cavity 14. Among them, the thermostat medium can be a liquid or a gas or other thermostat medium.

[0072] In this embodiment, the function of the thermostat 16 is to reduce the temperature of the battery body, and the thermostat medium is liquid. In other embodiments, the function of the thermostat 16 and the type of the thermostat medium can be adjusted according to actual needs, and are not limited here.

[0073] Among them, Figure 5 and Figure 6 As shown, the inlet and outlet of the flow channel 1611 are respectively provided with connecting pipes 162, and the temperature regulating connector 52 is connected to the flow channel 1611 through the connecting pipes 162, so that the external temperature regulating medium is sequentially passed into the flow channel 1611 through the temperature regulating connector 52 and the connecting pipe 162 to adjust the temperature of the accommodating chamber 14. The inlet and outlet of the flow channel 1611 are respectively provided with connecting pipes 162, and the two connecting pipes 162 can respectively achieve the inflow and discharge of the temperature regulating medium, that is, the inflow and discharge of the temperature regulating medium can be carried out at the same time, which also realizes that the temperature regulating medium can be continuously transported to the flow channel 1611 to replace the temperature regulating medium originally in the flow channel 1611, so that the temperature regulating element 16 can continuously adjust the temperature of the accommodating chamber 14.

[0074] like Figure 4As 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.

[0075] In some embodiments where the temperature regulating element 16 is only provided on the upper cover 15 or the temperature regulating element 16 is only provided on the bottom plate 12 , the plate body 1612 is only laid on the upper cover 15 or only laid on the bottom plate 12 .

[0076] See also Figure 8 It is understood that the flow channel 1611 includes a plurality of branches 16111 connected in sequence, and the branch 16111 is at least opened in the first area of ​​the temperature control plate 161, and the shape of the branch 16111 is in the shape of a "J". In other alternative embodiments, the shape of the branch 16111 can also be in the shape of a "bow" or other similar shapes. With the above-mentioned structural form, through a plurality of branches 16111 connected in sequence, it is ensured that the temperature control medium can flow normally in the flow channel 1611. The shape of the branch 16111 is in the shape of a "J", which increases the distribution area of ​​the branch 16111, so that the area for the circulation of the temperature control medium is wider, and the temperature control efficiency of the temperature control medium on the battery body as a whole in the accommodating cavity 14 is improved.

[0077] In this embodiment, the first area is at least provided on the top and bottom of the battery body. In some embodiments where the temperature regulating member 16 is provided only on the upper cover 15 or only on the bottom plate 12 , the first area is provided only on the upper cover 15 or only on the bottom plate 12 .

[0078] There are several implementations for the branches 16111: In the first implementation, multiple branches 16111 are arranged at intervals along the length direction of the temperature regulating plate 161; In the second implementation, each branch 16111 extends from one side of the temperature regulating plate 161 to the other side of the temperature regulating plate 161 along the width direction of the temperature regulating plate 161; In the third implementation, multiple branches 16111 are arranged at intervals along the length direction of the temperature regulating plate 161, and each branch 16111 extends from one side of the temperature regulating plate 161 to the other side of the temperature regulating plate 161 along the width direction of the temperature regulating plate 161. Figure 8As shown, preferably, a plurality of branches 16111 are arranged at intervals along the length direction of the temperature regulating plate 161, and each branch 16111 extends from one side of the temperature regulating plate 161 to the other side of the temperature regulating plate 161 along the width direction of the temperature regulating plate 161, thereby further increasing the distribution area of ​​the branches 16111, so that the area for the temperature regulating medium to circulate is wider, thereby improving the temperature regulating efficiency of the temperature regulating medium on the entire battery body.

[0079] like Figure 6 As shown, the inlet and outlet of the flow channel 1611 are located on the same side of the temperature regulating plate 161, and the flow channel 1611 can have the following embodiments: in the first embodiment, the flow channel 1611 is arranged around at least the top of the battery body from the inlet and then reaches the outlet; in the second embodiment, the flow channel 1611 is arranged around at least the bottom of the battery body from the inlet and then reaches the outlet; in the third embodiment, the flow channel 1611 is arranged around at least the top and bottom of the battery body from the inlet and then reaches the outlet. Preferably, the flow channel 1611 is arranged around at least the top and bottom of the battery body from the inlet and then reaches the outlet. Specifically, the temperature regulating medium flows into the flow channel 1611 from the inlet, flows through the flow channel 1611 and then flows out from the outlet. The inlet and outlet are arranged on the same side of the temperature regulating plate 161, which increases the flow path of the flow channel 1611, thereby increasing the flow area of ​​the temperature regulating medium and improving the temperature regulating efficiency of the temperature regulating medium on the battery body as a whole. In addition, the above-mentioned structural form facilitates the connection between the temperature regulating connector 52 and the flow channel 1611.

[0080] In addition, in the fourth embodiment, a plurality of branches 16111 are arranged at intervals along the width direction of the temperature regulating plate 161; in the fifth embodiment, each branch 16111 extends from one side of the temperature regulating plate 161 to the other side of the temperature regulating plate 161 along the length direction of the temperature regulating plate 161; in the sixth embodiment, a plurality of branches 16111 are arranged at intervals along the width direction of the temperature regulating plate 161, and each branch 16111 extends from one side of the temperature regulating plate 161 to the other side of the temperature regulating plate 161 along the length direction of the temperature regulating plate 161. Preferably, a plurality of branches 16111 are arranged at intervals along the width direction of the temperature regulating plate 161, and each branch 16111 extends from one side of the temperature regulating plate 161 to the other side of the temperature regulating plate 161 along the length direction of the temperature regulating plate 161, thereby further increasing the distribution area of ​​the branches 16111, so that the area for the temperature regulating medium to circulate is wider, and the temperature regulating efficiency of the temperature regulating medium on the entire battery body is improved.

[0081] Furthermore, one end of the connecting tube 162 near the thermostat connector 52 is a hose, and one end of the connecting tube 162 near the thermostat connector 52 is sleeved on the interface of the thermostat connector 52 through the hose. With the above structure, one end of the connecting tube 162 near the thermostat connector 52 is set as a hose, which facilitates the floating of the thermostat connector 52.

[0082] In this embodiment, the connecting pipe 162 is configured as a hose as a whole. In other embodiments, the connecting pipe 162 may also be configured as a hose only at one end close to the temperature regulating connecting pipe 162 .

[0083] There are several implementations for the thermostat 161: In the first implementation, a recess is provided on the side of the thermostat 161 facing away from the battery body to accommodate the end of the connecting tube 162 close to the battery body; In the second implementation, a recess is provided on the side of the thermostat 161 facing the battery body to accommodate the end of the connecting tube 162 close to the battery body; In the third implementation, a recess is provided on the side of the thermostat 161 facing away from and facing the battery body to accommodate the end of the connecting tube 162 close to the battery body. In this embodiment, a recess is provided on the side of the thermostat 161 facing away from the battery body to accommodate the end of the connecting tube 162 close to the battery body, and is arranged near the frame structure 11, so as to prevent interference between the thermostat 161 and the connecting tube 162 and between the connecting tube 162 and the reinforcement 2, thereby ensuring that the thermostat 161 can work normally. In addition, the provision of the recess can also reduce the height dimension of the battery pack 100, thereby improving the compactness of the structure of the battery pack 100.

[0084] The thermostat connector 52 is connected to at least one outer wall of the battery box 1, and the material of the outer wall on which the thermostat connector 52 is installed is a profile. With the above-mentioned structural form, the side wall 20 on which the thermostat connector 52 is installed is made of profiles, which reduces the complexity of the processing technology and has the characteristics of low cost. In addition, the outer wall made of profiles has a higher structural strength, so that the outer wall on which the thermostat connector 52 is installed has a higher load-bearing capacity, thereby improving the stability and shock resistance of the battery pack 100.

[0085] Furthermore, the temperature regulating member 16 also includes a circulation pipe, which is laid in the flow channel 1611, and the temperature regulating medium circulates in the circulation pipe. The temperature regulating medium is contained in the circulation pipe, which solves the sealing problem, and reduces the sealing requirements between the protection plate 1613 and the plate body 1612. Of course, the flow channel 1611 may not be provided, and the circulation pipe may be directly fixed to the temperature regulating plate 161, and the circulation pipe may be wound in a "J" shape. In this way, the circulation pipe does not have the limit protection of the flow channel 1611, which will result in a limited service life of the circulation pipe. Therefore, in this embodiment, by providing the flow channel 1611 and laying the circulation pipe in the flow channel 1611, it is beneficial to increase the service life of the circulation pipe.

[0086] In this embodiment, the battery box 1 includes an upper cover 15, a bottom plate 12 and a accommodating cavity 14 for accommodating the functional component 5. The upper cover 15 is provided with an opening 151, which is connected to the accommodating cavity 14. The upper cover 15 is detachably connected with a closing cover 152, which is used to close or open the opening 151.

[0087] like Figure 1 and Figure 3 As shown, by setting an opening 151 in communication with the accommodating cavity 14 on the upper cover 15 and / or the bottom plate 12 of the battery case 1, and using a detachable closing cover 152 to control the opening and closing of the opening 151, when the functional part 5 in the battery case 1 needs to be repaired or replaced, the closing cover 152 can be removed, and the functional part 5 can be repaired and replaced from the opening 151, so that the upper cover 15 does not need to be removed, which is conducive to reducing the workload of the later maintenance of the battery pack 100 and improving the later maintenance efficiency of the battery pack 100. In particular, when the upper cover 15 or the bottom plate 12 is fixed by bonding, the setting of the opening 151 or the bottom plate 12 can solve the problems such as the upper cover 15 cannot be removed or the fixing effect is poor after removal, which is conducive to ensuring the performance integrity of the battery pack 100 after repair.

[0088] In other embodiments, both the upper cover 15 and the bottom plate 12 may be provided with an opening 151, and both the upper cover 15 and the bottom plate 12 may be detachably connected with a closing cover 152, and the closing cover 152 is used to close or open the opening 151. Of course, only the bottom plate 12 may be provided with an opening 151 and a closing cover 152 for closing or opening the opening 151.

[0089] Among them, Figure 3 As shown, the opening 151 includes a first opening 1511 and a second opening 1512. The position of the first opening 1511 corresponds to the position of the electrical connector 51 and the thermostat connector 52, and the position of the second opening 1512 corresponds to the position of the control board. Different openings 151 are set corresponding to different functional parts 5 in a targeted manner, and the openings 151 correspond to the positions of the functional parts 5. On the one hand, it can improve the convenience of maintenance and replacement, and further improve the maintenance efficiency. On the other hand, compared with a single opening 151 that has a larger size requirement to meet the maintenance of multiple functional parts 5, multiple openings 151 are more dispersedly set on the battery box 1, which is conducive to ensuring the structural strength of the battery box 1.

[0090] Preferably, the size of the opening 151 is not less than the size of the functional part 5, so as to improve the convenience during maintenance or replacement and prevent the situation in which the opening 151 is too small and the operation is restricted.

[0091] In this embodiment, the battery case 1 also includes a first seal 153 arranged between the closing cover 152 and the upper cover 15. The first seal 153 is used to fill the gap between the closing cover 152 and the upper cover 15, thereby facilitating the improvement of the sealing performance of the connection between the closing cover 152 and the upper cover 15, preventing external dust or liquid from entering the accommodating cavity 14 from the opening 151, and facilitating the safety of the battery pack 100 and improving the service life of the battery pack 100.

[0092] In some embodiments where the bottom plate 12 is provided with an opening 151 and a closing cover 152, the battery box 1 further includes a second sealing member disposed between the closing cover 152 and the bottom plate 12, and the second sealing member is used to fill the gap between the closing cover 152 and the bottom plate 12, thereby facilitating the improvement of the connection sealing between the closing cover 152 and the bottom plate 12. The first sealing member 153 and the second sealing member may be rubber seals, plastic seals, metal seals or other sealing forms.

[0093] See also Figures 10 to 12 It is understood that the battery box 1 also includes a reinforcing member 2 disposed between the thermostat 16 and the bottom plate 12, one end of the reinforcing member 2 is connected to the bottom plate 12, and the other end of the reinforcing member 2 extends in the direction close to the battery body, for supporting the battery body. With the above-mentioned structural form, the reinforcing member 2 is disposed between the thermostat 16 and the bottom plate 12, and the bottom plate 12 can be reinforced by the reinforcing 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 thus improving the stability and reliability of the placement of the battery body.

[0094] like Fig.11 and Fig.15 As shown, 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. 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, 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.

[0095] 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.

[0096] 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.

[0097] 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.

[0098] like Fig.11 , Fig.12 as well as Fig.15 As shown, the reinforcement member 2 further 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, and also improve 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.

[0099] In this embodiment, 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 connection of the multiple first support portions 22 that is farthest from the frame structure 11. Furthermore, 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 the middle position of the first support portion 22, thereby reducing the height of the second support portion 25, thereby improving the stability and reliability of the second support portion 25 supporting the bottom plate 12. For the first support portion 22 and the first reinforcement portion 21 far from the frame structure 11, the second reinforcement portion 24 is connected to the side wall 20 of the first support portion 22 near the top wall, so that the battery body can be supported by the second reinforcement portion 24.

[0100] 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.

[0101] 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.

[0102] 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.

[0103] like Fig.12 and Fig.13 As shown, the reinforcement member 2 further 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 11 and the bottom plate 12 can be strengthened, thereby further improving the stability of the battery box.

[0104] 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 .

[0105] 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.

[0106] like Fig.12 and Fig.13 As shown, 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.

[0107] 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.

[0108] The battery pack 100 also includes a connector, a third through hole is provided on at least one first support portion 22 away from the frame structure 11, a fourth through hole is provided on the bottom plate 12, and the third through hole and the fourth through hole are connected by a connector. 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. In addition, with the above structure, the connection between the reinforcement member 2 and the bottom plate 12 is facilitated.

[0109] 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 and is not limited here.

[0110] In addition, in the present embodiment, the connecting member is a bolt. In other embodiments, the type of the connecting member can also be other forms, which are not limited here.

[0111] like Fig.12 As shown, the battery box 1 also includes a buffer 17, which is arranged between the temperature regulating member 16 and the bottom plate 12. With the above structure, the buffer 17 can provide a buffer 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.

[0112] 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.

[0113] 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 changing the temperature of the battery body. In this embodiment, the thermostat 16 is in direct contact with the battery body, thereby further improving the efficiency of the thermostat 16 in changing the temperature of the battery body.

[0114] like Fig.12 and Fig.13 As shown, the first surface of the bottom plate 12 close to the battery body is provided with a groove, and the groove 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 upper surface of the bottom plate 12 away from the four sides is provided with a groove.

[0115] In this embodiment, the groove 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 can be adjusted according to actual needs, and is not limited here.

[0116] In a specific embodiment, Fig.12 and Fig.14 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.

[0117] like Figure 1 , Fig.10 , Fig.12 as well as Fig.14 As shown, the battery box 1 also includes a front beam 18, a rear beam 19 and two side walls 20, and 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 1811 inside. With the above-mentioned structural form, the battery body can be protected by the frame structure 11, effectively preventing external impurities from entering the battery pack and causing damage to the battery body, ensuring the safety and stability of the battery body, and thus improving 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 1811 inside, so that while ensuring that the overall structural strength of the battery pack 100 meets the requirements, the material is reduced to achieve the effect of reducing the weight of the battery pack 100. At the same time, the frame structure 11 is formed by the front beam 18, the rear beam 19 and the two side walls 20, so as to achieve the reinforcement of the battery box 1 and higher stability.

[0118] like Fig.18 As shown, the top surface of the frame structure 11 is provided with a sealing groove 6 for accommodating the sealant, the sealing groove 6 is arranged around the frame structure 11, and the upper cover 15 is bonded to the top surface of the frame structure 11 by the sealant. The top surface of the frame structure 11 is provided with a circle of sealing grooves 6, and the sealant is arranged in the sealing grooves 6, so that the upper cover 15 is bonded to the top surface of the frame structure 11 by the sealant, and the sealing connection between the upper cover 15 and the frame structure 11 is achieved by the sealant, and the sealing effect is good; at the same time, the overflow of the sealant is effectively avoided by the sealing grooves 6, and the stability is higher.

[0119] Optionally, the top surface of the frame structure 11 has a plurality of sealing grooves 6 for accommodating sealant, and the plurality of sealing grooves 6 are arranged around the frame structure 11. Alternatively, the top surface of the frame structure 11 has a sealing groove 6 for accommodating sealant, and the sealing groove 6 is arranged around the frame structure 11, for example, the sealing groove 6 is a round-shaped sealing groove, and the round-shaped sealing groove is arranged around the frame structure 11. Figure 1 and Figure 2 As shown, the battery pack 100 further includes an electrical connector 51 and at least one pressure relief valve 53. The electrical connector 51 and the thermostatic connector 52 are both connected to the front beam 18, and at least one pressure relief valve 53 is connected to the front beam 18 and / or the rear beam 19. The electrical connector 51 and the thermostatic connector 52 are both connected to the front beam 18. When the battery pack 100 moves along its length direction, the electrical connector 51 and the thermostatic connector 52 are respectively plugged in or disconnected from the vehicle-end electrical connector 51 and the vehicle-end thermostatic connector 52 on the electric vehicle. When plugged in, the battery pack 100 provides power to the electric vehicle and changes the temperature in the battery pack 100. Thus, plugging and disconnecting are realized synchronously, so that the plugging between the electrical connector 51 and the thermostatic connector 52 and the vehicle-end electrical connector 51 and the vehicle-end thermostatic connector 52 on the electric vehicle is more stable and reliable, effectively avoiding the problem of unstable connection; and the overall structure of the battery pack 100 is made more compact. At the same time, by installing a pressure relief device on the front beam 18 and / or the rear beam 19, the front end and / or the rear end of the battery pack 100 is relieved, which effectively prevents excessive pressure inside the battery pack 100 and improves safety and stability.

[0120] In this embodiment, there are four pressure relief valves 53 , two of which are located on the front beam 18 and the rear beam 19 , respectively, and every two pressure relief valves 53 are distributed at both ends of the front beam 18 and the rear beam 19 , further improving the safety and stability of the battery pack 100 .

[0121] like Figure 1 and Fig. 9 As shown, the battery box 1 also includes a mounting seat 3, and a mounting opening 181 is provided on the outer wall for mounting the thermostatic connector 52. The mounting seat 3 is embedded in the mounting opening 181 and connected to the outer wall, and the thermostatic connector 52 is connected to the mounting seat 3. By embedding the mounting seat 3 in the mounting opening 181 and connecting it to the frame structure 11, and mounting the thermostatic connector 52 through the mounting seat 3, the thermostatic connector 52 is stably mounted on the frame structure 11, and the mounting strength requirement of the thermostatic connector 52 is ensured, 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.

[0122] like Fig.19As shown, the mounting seat 3 includes a supporting portion 31 and a connecting portion 32, one end of the supporting portion 31 is connected to the outer edge of the connecting portion 32, and the other end of the supporting portion 31 extends outward along the plate surface direction of the mounting seat 3, and the supporting portion 31 is against the side of the front beam 18 and / or the rear beam 19 that faces away from the battery body, and the connecting portion 32 is embedded in the second cavity 1811 and connected to the outer wall of the second cavity 1811 close to the battery body. The mounting seat 3 is embedded into the mounting opening 181 from the outside of the battery pack 100 along the length direction of the battery pack 100, and the supporting portion 31 is against the side of the front beam 18 and / or the rear beam 19 that faces away from the battery body, so that the mounting seat 3 and the frame structure 11 are in contact with each other, and the mounting seat 3 can no longer slide into the battery pack 100, indicating that the mounting seat 3 is installed in place, thereby achieving accurate positioning of the mounting seat 3. At the same time, after the connecting portion 32 is embedded in the second cavity 1811, it is connected to the outer wall of the second cavity 1811 close to the battery body, so that the mounting seat 3 is firmly connected to the frame structure 11, the installation connection is very convenient, and the installation stability of the mounting seat 3 can be ensured. Among them, one end of the connecting portion 32 away from the abutting portion 31 is connected to the frame structure 11. The abutting portion 31 can also be connected to the frame structure 11, effectively strengthening the structural connection strength.

[0123] See also Fig.18 It is understood that the middle area of ​​the mounting seat 3 has a through hole 33 for communicating with the inside of the battery case 1, and a plurality of connection holes 34 are provided on the mounting seat 3, and the plurality of connection holes 34 are distributed on the outer edge of the through hole 33. The thermostatic connector 52 is detachably connected to the plurality of connection holes 34 on the mounting seat 3, and is connected to the battery body after passing through the through hole 33. The thermostatic connector 52 passes through the through hole 33 from the outside of the battery pack 100 and extends into the battery pack 100. The through hole 33 makes it easy for the thermostatic connector 52 to pass through the battery case 1 and connect to the battery body. The thermostatic connector 52 passes through the through hole 33 and is connected to the plurality of connection holes 34, and the plurality of connection holes 34 are distributed on the outer edge of the through hole 33, so as to fix the thermostatic connector 52 around, and the installation connection is stable and reliable. At the same time, it is very convenient to install and disassemble through the plurality of connection holes 34, and the structure is simple, and it is very convenient to process and manufacture.

[0124] like Fig.16 and Fig.17As shown, the battery box 1 also includes a maintenance compartment 201, and the rear beam 19 is provided with a maintenance port 191. The maintenance compartment 201 is detachably connected to the rear beam 19 and is used to seal and cover the maintenance port 191. When the battery pack 100 needs to be maintained, the maintenance compartment 201 can be removed from the rear beam 19, and the interior of the battery pack 100 can be maintained through the maintenance port 191, which is convenient for maintenance and inspection. After maintenance and inspection, the maintenance compartment 201 is installed and connected to the rear beam 19, so as to seal and cover the maintenance port 191, which has high safety and stability, simple structure, and convenient processing and manufacturing.

[0125] The battery box 1 also includes a fixing member 4, which is located in the frame structure 11 and 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 enhance the structural strength of the battery box 1, effectively avoid deformation of the battery pack 100, have high anti-seismic performance, and greatly improve the safety and stability of the battery pack 100.

[0126] like Fig. 9 As shown, the fixing member 4 includes transverse ribs 41 and longitudinal ribs 42 that are interlaced and connected to each other, and has the characteristics of simple structure, convenient processing and manufacturing, and reduced use cost. In this embodiment, the number of longitudinal ribs 42 is one, and the number of transverse ribs 41 is two. The longitudinal rib 42 is connected to one of the transverse ribs 41 in a cross shape, and the other transverse rib 41 is connected to one end of the longitudinal rib 42, thereby further improving the structural strength and stability of the fixing member 4. In addition, in this embodiment, the reinforcement member 2 is arranged on the front beam 18, the rear beam 19 on the bottom plate 12 and the corresponding position of the transverse rib 41 in the fixing member 4. Specifically, with respect to the reinforcement 2 provided on the corresponding positions of the front beam 18 and the rear beam 19 on the bottom plate 12, the reinforcement 2 is connected to the front beam 18 and the rear beam 19, so that the connection positions of the bottom plate 12 and the front beam 18 and the rear beam 19 can be reinforced by the reinforcement 2; with respect to the reinforcement 2 provided on the corresponding positions of the transverse rib 41 in the fixing part 4 on the bottom plate 12, the reinforcement 2 can cover the transverse rib 41 in the projection in the height direction of the battery pack 100, so that the connection positions of the transverse rib 41 and the side wall 20 can be reinforced by the reinforcement 2, thereby improving the structural strength of the battery box body.

[0127] In order to reduce the weight and use cost of the fixing member 4 , the fixing member 4 preferably has a third cavity inside.

[0128] The position of the reinforcement member 2 can be arranged in the following embodiments. In the first embodiment, the reinforcement member 2 is arranged at a position corresponding to the frame structure 11 on the bottom plate 12; in the second embodiment, the reinforcement member 2 is arranged at a position corresponding to the fixing member 4 on the bottom plate 12; in the third embodiment, the reinforcement member 2 is arranged at a position corresponding to the frame structure 11 on the bottom plate 12, specifically, the reinforcement member 2 can be arranged at a position corresponding to the transverse rib 42 on the bottom plate 12. Fig.10 and Fig.11 As shown, preferably, the reinforcement member 2 can be arranged at the corresponding position of the transverse rib 42 on the bottom plate 12, and extend in the direction away from the frame structure 11 and the fixing member 4. With the above-mentioned structural form, multiple reinforcement members 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 strengthened by the reinforcement member 2, thereby improving the structural strength of the battery box body.

[0129] like Fig.17 and Fig.18 As shown, the battery pack 100 includes a plurality of lock connection structures 7, a side wall bracket 2011 is provided on the side wall 20, and the two side wall brackets 2011 each include a bracket body 20111; a plurality of reinforcing ribs 201111 are provided on the outer side of the bracket body 20111 facing away from the battery body, and the plurality of reinforcing ribs 201111 are arranged at intervals along the length direction, and the lock connection structure 7 is arranged between the reinforcing ribs 201111. The two side wall brackets 2011 are respectively connected to the opposite sides of the battery body along the length direction, so that the connection contact area between the two side wall brackets 2011 and the battery body is large, and the connection strength between the battery body and the two side wall brackets 2011 is effectively strengthened. By providing a plurality of reinforcing ribs 201111 with outward protrusions 27 on the outer side of the bracket body 20111 facing away from the battery body, and arranging the lock connection structure 7 between the reinforcing ribs 201111, the connection strength between the plurality of lock connection structures 7 and the side wall bracket 2011 is effectively strengthened, the support strength requirement of the battery pack 100 is met, and the locking accuracy is ensured. At the same time, multiple reinforcing ribs 201111 are arranged at intervals along the length direction of the bracket body 20111, so as to reduce the weight of the side wall bracket 2011 while meeting the load-bearing strength of the side wall bracket 2011, reduce the material used, and achieve the effect of reducing the weight of the battery pack 100, so as to achieve the effect of reducing the weight of the battery pack 100 and improving the supporting strength of the side wall bracket 2011 at the same time; the processing technology is simple and the cost is low.

[0130] See also Fig. 20It is understood that the side wall bracket 2011 also includes a thickened portion 202, which is arranged in the bracket body 20111 and corresponds to the reinforcing rib 201111 on the outside of the bracket body 20111. The thickened portion 202 is arranged in the bracket body 20111 and corresponds to the reinforcing rib 201111 on the outside of the bracket body 20111, so that the thickened portion 202 and the reinforcing rib 201111 can strengthen the inner and outer sides of the bracket body 20111, making the structure of the bracket body 20111 more stable and reliable to meet the support strength requirements of the battery pack 100; at the same time, the thickened portion 202 is arranged in the bracket body 20111, does not occupy additional space, and realizes a more compact structure.

[0131] like Fig. 20 As shown, the bracket body 20111 has a plurality of weight-reducing cavities 203, the thickened portion 202 is disposed in the weight-reducing cavity 203, and is connected to the inner wall of the bracket body 20111 near the reinforcing rib 201111, and the lock connection structure 7 passes through the side wall 20 of the bracket body 20111 and is connected to the thickened portion 202. The bracket body 20111 has a plurality of weight-reducing cavities 203, and the plurality of weight-reducing cavities 203 have a weight-reducing effect, which can effectively reduce the overall weight of the side wall bracket 2011, so that the overall weight of the battery pack 100 is reduced and the material is reduced while ensuring that the overall structural strength of the battery pack 100 meets the requirements. In addition, compared with using only one larger weight-reducing cavity 203, using a plurality of weight-reducing cavities 203 can utilize the connection structure between them to enhance the support strength of the side wall bracket 2011, and further enhance the structural strength of the side wall bracket 2011. At the same time, by setting the thickened portion 202 in the weight-reducing cavity 203, the connection of the lock connection structure 7 is ensured to be more stable and reliable, and no extra space is occupied; the thickened portion 202 is connected to the inner wall of the bracket body 20111 close to the reinforcing rib 201111, and the connection structure between the thickened portion 202 and the bracket body 20111 can be used to enhance the load-bearing strength of the side wall bracket 2011, so that when the lock connection structure 7 passes through the side wall of the bracket body 20111 and is connected to the thickened portion 202, the connection of the lock connection structure 7 can be ensured to be more stable and reliable.

[0132] like Fig.21As shown, the bracket body 20111 includes a shell 204, at least one transverse partition 205, at least one longitudinal partition 206 and at least one inclined partition 207. The battery body and the lock connection structure 7 are respectively connected to the two sides of the shell 204. The transverse partition 205, the longitudinal partition 206 and the inclined partition 207 are all connected to the shell 204 and divide the space in the shell 204 into a plurality of weight-reducing cavities 203. The transverse partition 205, the longitudinal partition 206 and the inclined partition 207 are all connected to the shell 204 and connected to each other to achieve the purpose of dividing the larger space in the shell 204 into a plurality of weight-reducing cavities 203. The distribution arrangement of the transverse partition 205, the longitudinal partition 206 and the inclined partition 207 can greatly enhance the structural strength of the bracket body 20111, thereby improving the safety, stability and anti-seismic performance of the battery pack 100. Among them, the shell 204, at least one transverse partition 205, at least one longitudinal partition 206 and at least one inclined partition 207 are integrally formed. The number and specific distribution positions of the transverse partitions 205, the longitudinal partitions 206 and the inclined partitions 207 are not limited and can be installed and arranged according to strength requirements.

[0133] In this embodiment, the thickened portion 202 is disposed in the housing 204, and the thickened portion 202 and the plurality of reinforcing ribs 201111 are distributed and correspondingly disposed on both sides of the housing 204. The thickened portion 202 and the bracket body 20111 are integrally formed, which is very convenient for processing and manufacturing, and has high structural strength. Of course, in other embodiments, the thickened portion 202 and the bracket body 20111 may also be a split structure, and the thickened portion 202 may be inserted into the weight-reducing cavity 203 of the bracket body 20111 when in use.

[0134] like Fig. 20As shown, the outer side of the bracket body 20111 facing away from the battery body has a first weight-reducing groove 208 recessed inwardly, and the first weight-reducing groove 208 is arranged between two adjacent reinforcing ribs 201111. One end of the locking connection structure 7 extends into the first weight-reducing groove 208 and is connected to the bracket body 20111, and the other end of the locking connection structure 7 is exposed on the outer wall surface of the bracket body 20111 and is used for locking connection with the locking mechanism on the quick-change bracket. The outer side of the bracket body 20111 facing away from the battery body has a plurality of reinforcing ribs 201111 protruding outward 27 and a first weight-reducing groove 208 recessed inward. The first weight-reducing groove 208 is arranged between two adjacent reinforcing ribs 201111, that is, the first weight-reducing groove 208 is recessed inward from the protruding 27 surface of the two adjacent reinforcing ribs 201111, so that the bottom of the first weight-reducing groove 208 is a horizontal plane, and the lock connection structure 7 extends into the first weight-reducing groove 208 to reduce the gap between the side wall bracket 2011 and the quick-change bracket, and realizes a large contact area between the lock connection structure 7 and the outer side surface of the bracket body 20111, and high installation connection stability, thereby meeting the support strength requirements of the battery pack 100 and ensuring the locking accuracy. At the same time, the first weight-reducing groove 208 plays a weight-reducing role, realizes the overall weight reduction of the battery pack 100, reduces the material, and the first weight-reducing groove 208 has a simple structure and is easy to process and manufacture.

[0135] See also Fig.21 It is understood that the reinforcing rib 201111 includes an upper reinforcing rib 2011111 and a lower reinforcing rib 2011112, and the upper reinforcing rib 2011111 and the lower reinforcing rib 2011112 are spaced and connected to the bracket body 20111 along the height direction of the battery body, so that a second weight-reducing groove 209 is formed between the upper reinforcing rib 2011111 and the lower reinforcing rib 2011112. The reinforcing rib 201111 realizes the formation of a second weight-reducing groove 209 between the upper reinforcing rib 2011111 and the lower reinforcing rib 2011112 through the upper reinforcing rib 2011111 and the lower reinforcing rib 2011112. The second weight-reducing groove 209 has a weight-reducing effect, and can further reduce the overall weight of the side wall bracket 2011, so that the overall weight of the battery pack 100 is reduced and the material is reduced while ensuring that the overall structural strength of the battery pack 100 meets the requirements; and the second weight-reducing groove 209 has a simple structure and is easy to process and manufacture.

[0136] like Fig. 20As shown, the lock connection structure 7 includes a lock mounting seat 71, a lock shaft 72 and a support shaft 73, the lock shaft 72 and the support shaft 73 are respectively arranged on opposite sides of the lock mounting seat 71, the lock mounting seat 71 is mounted on the bracket body 20111, the lock shaft 72 is connected to the outer side of the lock mounting seat 71 facing away from the battery body and is used to lock and connect with the locking mechanism on the quick-change bracket, the support shaft 73 is connected to the inner side of the lock mounting seat 71 facing the battery body, the support shaft 73 passes through the side wall 20 of the bracket body 20111 and is embedded in the thickened portion 202. The lock connection structure 7 is inserted into the thickened portion 202 through the support shaft 73, and accurate positioning is achieved through the support shaft 73, which ensures installation accuracy, further improves the installation connection strength, and is easy to install. The two sides of the lock mounting seat 71 respectively exert force on the locking mechanism and the side wall bracket 2011 through the lock shaft 72 and the support shaft 73, forming a bilateral force, so that the support shaft 73 can share the shear force exerted on the lock shaft 72 during actual work, thereby increasing the fixing strength of the lock connection structure 7, thereby greatly improving the stability of the lock connection structure 7 and extending the service life of the lock connection structure 7; at the same time, it effectively avoids the displacement of the lock connection structure 7 and further ensures the locking accuracy.

[0137] like Fig. 20 As shown, the battery pack 100 also includes a guide positioning mechanism 8, which is respectively arranged on the outer side of the bracket body 20111 facing away from the battery body, and the guide positioning mechanism 8 is connected to the reinforcing rib 201111. The guide positioning mechanism 8 plays a guiding role in the installation process of the battery pack 100, and accurately aligns the battery pack 100 with the quick-change bracket at the bottom of the electric vehicle, so that the installation accuracy of the battery pack 100 is higher, and after the battery pack 100 is installed, it abuts against the mounting surface of the locking mechanism of the quick-change bracket on the electric vehicle to prevent the lock shaft 72 from falling off from the side, ensuring stable and reliable locking. At the same time, the two sides of the battery pack 100 have a certain force on the vehicle body in the width direction, effectively reducing the wear between the battery pack 100 and the vehicle body, and improving the service life of the battery pack 100. And the guide positioning mechanism 8 is connected to the reinforcing rib 201111 with high strength, so that the connection is more stable and reliable.

[0138] like Fig.21As shown, the guide positioning mechanism 8 includes a positioning block 81 and a plurality of fastening components 82. A plurality of first through holes 211 are correspondingly provided on the bracket body 20111 and the reinforcing rib 201111, and a plurality of first connecting holes 2021 are provided on the thickened portion 202. The fastening components 82 pass through the first through holes 211 and are connected to the first connecting holes 2021. The fastening components 82 pass through the first through holes 211 on the bracket body 20111 and the reinforcing rib 201111, and the fastening components 82 are connected to the first connecting holes 2021 on the thickened portion 202, so that the guide positioning mechanism 8 is installed and connected to the bracket body 20111, the reinforcing rib 201111 and the thickened portion 202, further achieving a more stable and reliable connection, and greatly improving the safety and stability of the battery pack 100. At the same time, the structure is simple and the installation and setting are very convenient. Specifically, there are four fastening components 82 , which are respectively installed and connected at the four corners of the positioning block 81 ; the upper two fastening components 82 are connected to the upper reinforcing rib 2011111 , and the lower two fastening components 82 are connected to the lower reinforcing rib 2011112 .

[0139] In the prior art, the side wall bracket 2011 is installed and connected in the quick-change bracket through the lock connection structure 7, so that there is a large gap between the side wall bracket and the quick-change bracket, and impurities such as sand, stone, and water can easily enter the gap and contact the lock connection structure 7, causing wear of the lock connection structure 7 and affecting the locking accuracy. Therefore, the present application also provides at least one of the following embodiments to at least solve the above problems.

[0140] like Fig. 20 As shown, the side wall bracket 2011 also includes a protective plate 2011113, one end of the protective plate 2011113 is connected to the outer side of the bracket body 20111 facing away from the battery body, and the other end of the protective plate 2011113 extends outward in the horizontal direction. The battery pack 100 is installed in the quick-change bracket at the bottom of the electric vehicle, and there is a gap between the battery pack 100 and the quick-change bracket. The protective plate 2011113 is connected to the outer side of the bracket body 20111 facing away from the battery body and extends outward. The protective plate 2011113 has a protective shielding function. The protective plate 2011113 will be used to shield the gap between the battery pack 100 and the quick-change bracket, effectively preventing impurities from entering the gap between the battery pack 100 and the quick-change bracket, and greatly improving the safety and stability of the electric vehicle.

[0141] The width of the protective plate 2011113 extending outward is smaller than the thickness of the guide positioning mechanism 8. The guide positioning mechanism 8 will be located in the quick-change bracket and exert force on the inner wall surface of the quick-change bracket to achieve precise positioning. The width of the protective plate 2011113 extending outward is smaller than the thickness of the guide positioning mechanism 8, so that the protective plate 2011113 and the inner wall surface of the quick-change bracket will not contact and interfere with each other.

[0142] The protective plate 2011113 is connected to the bottom of the bracket body 20111 and is located below the lock connection structure 7. The protective plate 2011113 below the lock connection structure 7 can effectively prevent impurities from entering the gap between the bracket body 20111 and the quick-change bracket to affect the locking accuracy of the lock connection structure 7, which helps to extend the service life of the lock connection structure 7.

[0143] See also Fig.21 As shown, a notch 20111131 is provided on the protective plate 2011113 for the unlocking member to pass through. The lock link on the quick-change bracket will be connected to multiple lock bases and used to lock the lock shaft 72 on the battery pack 100 in the lock groove of the lock base. By providing a notch 20111131 on the protective plate 2011113, the unlocking member will extend through the notch 20111131 to the top of the protective plate 2011113 and exert force on the lock link, and then the multiple lock shafts 72 will be unlocked, so that the multiple lock shafts 72 can be moved out to the lock groove of the lock base, thereby realizing the disassembly and replacement of the battery pack 100. The notch 20111131 effectively avoids interference caused by the protective plate 2011113, ensures smooth unlocking, and can ensure the normal implementation of the battery replacement operation of the electric vehicle.

[0144] The present embodiment continues to provide an electric vehicle, which includes the above-mentioned battery pack 100. The battery pack 100 is applied to the electric vehicle, so that the battery body can be set 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-mentioned 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, with the above-mentioned structural form, the temperature regulating member 16 is used to adjust the temperature in the accommodating cavity 14, so that the temperature of the battery body can be changed by the temperature regulating member 16, so that the temperature of the battery body can be maintained in a normal range, thereby improving the use safety and service life of the battery body and increasing the versatility of the battery pack 100.

[0145] 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 case, the battery case includes an upper cover, a bottom plate and a accommodating cavity for accommodating the battery body, the upper cover and the bottom plate are respectively arranged at the top and bottom of the accommodating cavity, and a thermostat is provided on the upper cover and / or the bottom plate, and the thermostat is used to adjust the temperature in the accommodating cavity.

2. The battery pack according to claim 1, characterized in that: The temperature regulating element comprises a temperature regulating plate, on which a flow channel is provided, and the flow channel is used for circulating a temperature regulating medium; The inlet and the outlet of the flow channel are respectively provided with connecting pipes, and the battery pack also includes a temperature regulating connector, and the temperature regulating connector is connected to the flow channel through the connecting pipe.

3. The battery pack according to claim 2, characterized in that: The temperature regulating plate comprises a plate body and a protection plate, wherein the plate body is laid on the upper cover and / or the bottom plate; The flow channel is provided on a side of the plate body facing away from the upper cover or the bottom plate, and the flow channel is recessed toward the upper cover or the bottom plate; The protection plate at least covers the recessed area on the plate body to form the closed flow channel.

4. The battery pack according to claim 2, characterized in that: The flow channel includes a plurality of branches connected in sequence, the branches are at least opened in the first area of ​​the temperature regulating plate, and the shape of the branches is a "X" shape.

5. The battery pack according to claim 4, characterized in that: The plurality of branches are spaced apart along the length direction of the temperature regulating plate; and / or each of the branches extends from one side of the temperature regulating plate to the other side of the temperature regulating plate along the width direction of the temperature regulating plate.

6. The battery pack according to claim 2, characterized in that: The inlet and outlet of the flow channel are located on the same side of the temperature regulating plate, and the flow channel is arranged to surround at least the top and / or bottom of the battery body from the inlet and then reaches the outlet.

7. The battery pack according to claim 2, characterized in that: One end of the connecting pipe close to the thermostatic connector is a hose, and one end of the connecting pipe close to the thermostatic connector is sleeved on the interface of the thermostatic connector through the hose; And / or, the temperature regulating plate is provided with a recess on a side facing away from and / or facing the battery body, and the recess is used to accommodate an end of the connecting tube close to the battery body; And / or, the temperature regulating connector is connected to at least one outer wall of the battery box, and the material of the outer wall on which the temperature regulating connector is installed is a profile; And / or, the temperature regulating component further includes a circulation pipeline, the circulation pipeline is laid in the flow channel, and the temperature regulating medium flows in the circulation pipeline.

8. The battery pack according to claim 1, wherein: The battery box further includes a reinforcing member disposed between the temperature regulating member and the bottom plate, one end of the reinforcing member being connected to the bottom plate, and the other end of the reinforcing member extending in a direction close to the battery body, for supporting the battery body; And / or, the battery box further includes a buffer component, and the buffer component is arranged between the temperature regulating component and the bottom plate.

9. The battery pack according to claim 7, characterized in that: The battery box also includes a mounting seat, an mounting opening is provided on the outer wall for mounting the temperature regulating connector, the mounting seat is embedded in the mounting opening and connected to the outer wall, and the temperature regulating connector is connected to the mounting seat.

10. The battery pack according to claim 9, characterized in that: The middle area of ​​the mounting seat has a through hole for communicating with the interior of the battery box. The mounting seat is provided with a plurality of connection holes, which are distributed on the outer edge of the through hole. The temperature control connector is detachably connected to the plurality of connection holes on the mounting seat and connected to the battery body after passing through the through holes.

11. The battery pack according to claim 1, wherein: The outer wall of the battery box 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 side walls are combined to form a frame structure, and the upper cover and the bottom plate are respectively covered on the top and bottom surfaces of the frame structure to form the accommodating cavity; the front beam and / or the rear beam have a cavity inside.

12. The battery pack according to claim 11, characterized in that: 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.

13. The battery pack according to claim 12, characterized in that: The battery box also includes a reinforcing member, which is disposed on the bottom plate at a position corresponding to the frame structure and / or the fixing member and extends in a direction away from the frame structure and / or the fixing member.

14. The battery pack according to claim 11, wherein: The battery pack also includes a plurality of lock connection structures; a side wall bracket is provided on the side wall, and the side wall bracket includes a bracket body; a plurality of reinforcing ribs are provided on the outer side of the bracket body facing away from the battery body, and the plurality of reinforcing ribs are arranged at intervals along the length direction of the battery pack, and the lock connection structure is arranged between the reinforcing ribs.

15. The battery pack according to claim 14, characterized in that: The side wall bracket further comprises a thickened portion, which is arranged in the bracket body and is arranged corresponding to the reinforcing rib on the outer side of the bracket body; And / or, the outer side of the bracket body facing away from the battery body has a first weight-reducing groove recessed inwardly, the first weight-reducing groove is arranged between two adjacent reinforcing ribs, one end of the lock connection structure extends into the first weight-reducing groove and is connected to the bracket body, and the other end of the lock connection structure is exposed from the outer wall surface of the bracket body and is used for locking connection with the locking mechanism on the quick-change bracket; And / or, the side wall bracket further includes a protective plate, one end of which is connected to the outer side of the bracket body facing away from the battery body, and the other end of the protective plate extends outwardly in a horizontal direction.

16. The battery pack according to claim 15, characterized in that: The support body has a plurality of weight-reducing cavities, the thickened portion is arranged in the weight-reducing cavity and connected to the inner wall of the support body close to the reinforcing rib, and the lock connection structure passes through the side wall of the support body and is connected to the thickened portion.

17. An electric vehicle, characterized in that: The electric vehicle comprises a battery pack as described in any one of claims 1-16.

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