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 part is arranged on the upper cover and / or the bottom plate, and the temperature adjusting part is used for adjusting the temperature of 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 present invention discloses a battery pack and an electric vehicle including the same. Background Art

[0002] Electric vehicles have the advantages of zero emissions, low noise, and very economical operation and maintenance, and are increasingly favored by users. The energy used by electric vehicles is the electric energy provided by the battery pack carried by themselves. Electric vehicles need to be charged after the electric energy is used up. The battery pack setting methods of electric vehicles are generally divided into fixed type and replaceable type. Among them, the fixed battery pack is generally fixed on the vehicle, and the vehicle is directly used as the charging object during charging. The replaceable battery pack is generally fixed on the vehicle bracket by an active installation method, and the battery pack can be removed for separate replacement or charging operations. After the replaced battery pack is fully charged, it is reinstalled 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, affected by the weather or working environment, 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 will also affect the normal operation and performance stability of the battery body. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the defect that affected by the weather or working environment, the temperature of the battery body itself will be higher or lower than the normal temperature range in the prior art. Working at this temperature will reduce the service life of the battery body, and will also affect the normal operation and performance stability of the battery body, and provide a battery pack and an electric vehicle including the same.

[0005] The present invention solves the above technical problem by the following technical solutions:

[0006] The present invention discloses a battery pack, the battery pack 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 at the top and bottom of the receiving cavity, and a temperature regulating member is arranged on the upper cover and / or the bottom plate, and the temperature regulating member is used to regulate the temperature in the receiving cavity.

[0007] In this solution, adopting the above structural form, the battery body is arranged in the accommodating cavity, and the accommodating cavity can protect the battery body, improving the service life of the battery body. Moreover, the above form can assemble the battery pack into an integral module, facilitating the subsequent installation of the battery pack in the form of a module. Additionally, adopting the above structural form, the temperature regulating component can not only lower the temperature in the accommodating cavity but also raise the temperature in the accommodating cavity, which is beneficial to ensuring that the temperature in the accommodating cavity is within a normal range, so as to avoid the working state of components such as the battery body in the accommodating cavity being affected by the weather or the working environment, thereby ensuring the normal operation and performance stability of components such as the battery body in the accommodating cavity, and improving the use safety and service life of components such as the battery body in the accommodating cavity. Especially when facing extremely cold or extremely hot weather, the temperature regulating component can reduce the influence of the external air temperature on the battery pack, which is beneficial to increasing the available scenarios of the battery pack and enhancing the versatility of the battery pack. When both the upper cover and the bottom plate are provided with temperature regulating components, it is beneficial to ensure the uniformity of temperature regulation of the battery pack, thereby ensuring the integrity of the functions of the battery pack and improving the service life of the battery pack.

[0008] Preferably, the temperature regulating component includes a temperature regulating plate, and a flow channel is formed on the temperature regulating plate for the flow of a temperature regulating medium; connection pipes are respectively arranged at the inlet and outlet of the flow channel, and the battery pack further includes a temperature regulating connector which is connected to the flow channel through the connection pipes.

[0009] In this solution, adopting the above structural form, when the temperature regulating medium flows in the flow channel, the surface temperatures of the upper cover and the bottom plate can be lowered or raised to achieve lowering or raising the temperature in the accommodating cavity. And the temperature regulating component is arranged in a plate shape, which will not occupy too much space in the height direction of the battery box, being beneficial 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 component through the connection pipes, so as to control the working mode of the temperature regulating connector as a liquid cooling mode or a heating mode according to the actual application scenario, thereby controlling the temperature of the temperature regulating medium in the flow channel through the temperature regulating connector, and thus achieving lowering or raising the temperature in the accommodating cavity.

[0010] In addition, connection pipes are respectively arranged at the inlet and outlet of the flow channel. The two connection pipes can respectively achieve the inflow and outflow of the temperature regulating medium, that is to say, the inflow and outflow of the temperature regulating medium can be carried out simultaneously, which also realizes that the temperature regulating medium can be continuously transported into the flow channel to replace the original temperature regulating medium in the flow channel. In this way, the temperature regulating component continuously regulates the temperature of the accommodating cavity.

[0011] Preferably, the temperature regulating plate includes a plate body and a protection plate. The plate body is laid on the upper cover and / or the bottom plate. A 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 in a direction close to the upper cover or the bottom plate. The protection plate covers at least the recessed area on the plate body to form the enclosed flow channel.

[0012] In this solution, with the above structural form, the plate body and the protection plate jointly form the enclosed flow channel, which is beneficial to avoid the overflow of the temperature regulating medium. At the same time, using the split plate body and protection plate to install and form the temperature regulating plate is beneficial to improve the convenience during manufacturing. If a closed flow channel is directly opened in an integral temperature regulating plate, the manufacturing difficulty is high.

[0013] Preferably, the flow channel includes a plurality of branches connected in sequence. The branches are at least provided in a first area of the temperature regulating plate, and the shape of the branches is in a shape of a capital "J". 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 along the width direction of the temperature regulating plate.

[0014] In this solution, with the above structural form, the plurality of 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 along the width direction of the temperature regulating plate, further increasing the distribution area of the branches, so that the flow area of the temperature regulating medium is wider, and the temperature regulating efficiency of the temperature regulating medium for the entire battery body is improved.

[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 surrounds at least the top and / or bottom of the battery body from the inlet and then reaches the outlet.

[0016] In this solution, the temperature regulating medium flows into the flow channel from the inlet and flows out from the outlet after flowing through the flow channel. Setting the inlet and outlet on the same side of the temperature regulating plate 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 for the entire battery body. In addition, with the above structural form, it is convenient to connect the temperature regulating connector to the flow channel.

[0017] Preferably, one end of the connecting pipe close to the temperature regulating connector is a flexible pipe, and one end of the connecting pipe close to the temperature regulating connector is sleeved on the interface of the temperature regulating connector through the flexible pipe;

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

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

[0020] And / or, the temperature control member further includes a circulation pipeline, the circulation pipeline is laid in the flow channel, and the temperature control medium circulates in the circulation pipeline.

[0021] In this solution, one end of the connecting pipe close to the temperature control connector is set as a flexible pipe, which facilitates the floating of the temperature control connector. By providing a recess, interference between the temperature control plate and the battery body and the connecting pipe can be prevented, ensuring that the temperature control plate and the battery body can work properly. In addition, providing a recess can also reduce the size of the battery pack in the height direction, improving the compactness of the battery pack structure. The side wall where the temperature control connector is installed is made of profile processing, reducing the complexity of the processing technology, having the characteristics of low cost, and the structure strength of the outer wall made of profile processing is higher, so that the load-bearing capacity of the outer wall where the temperature control connector is installed is higher, thereby improving the stability and seismic resistance of the battery pack. When the temperature control medium flows in the circulation pipeline, the circulation pipeline is used to accommodate the temperature control medium, solving the sealing problem, and thus reducing the sealing requirement between the protection plate and the plate body.

[0022] Preferably, the battery box body further includes a reinforcing member disposed between the temperature control 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 towards the direction close to the battery body for supporting the battery body;

[0023] And / or, the battery box body further includes a buffer member, and the buffer member is disposed between the temperature control member and the bottom plate.

[0024] In this solution, the bottom plate is strengthened by the reinforcing member, improving the strength of the bottom plate, thereby reducing the risk of the bottom plate being crushed by the battery body, enhancing the strength and stability of the bottom plate for supporting the battery body, and further improving the stability and reliability of the battery body placed in the accommodating cavity. The buffer member can provide buffering for the battery body, preventing the battery body from being damaged by collision during transportation, thereby further improving the use safety and service life of the battery body.

[0025] Preferably, the battery box body further includes a mounting seat, a mounting opening is provided on the outer wall where the temperature control connector is installed, the mounting seat is embedded into the mounting opening and connected to the outer wall, and the temperature control connector is connected to the mounting seat.

[0026] In this solution, the mounting base is embedded into the mounting opening and connected to the outer wall, and the temperature control connector is installed through the mounting base, so as to stably install the temperature control connector on the outer wall of the battery box body, ensuring the installation strength requirements of the temperature control 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, a through hole for communicating with the inside of the battery box body is provided in the middle area of the mounting base, and a plurality of connection holes are provided on the mounting base. The plurality of connection holes 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 base and is connected to the battery body after passing through the through hole.

[0028] In this solution, adopting the above structural form, the temperature control connector passes through the through hole from the outside of the battery pack and extends into the battery pack. Through the through hole, the temperature control connector is convenient to pass through the battery box body and be connected to the battery body. The temperature control connector passes through the through hole and is connected to a plurality of connection holes, and the plurality of connection holes are distributed on the outer edge of the through hole, so as to fix the periphery of the temperature control connector, and the installation connection is stable and reliable. At the same time, through the plurality of connection holes, the installation and disassembly are very convenient, and the structure is simple and the processing and manufacturing are very convenient.

[0029] Preferably, the outer wall of the battery box body 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 enclose a frame structure. The upper cover and the bottom plate are respectively covered on the top surface and the bottom surface of the frame structure to form the accommodation cavity; a cavity is provided inside the front beam and / or the rear beam.

[0030] In this solution, adopting the above structural form, the battery body can be protected through the frame structure, improving the service life of the battery body. In addition, a cavity is provided inside the front beam and / or the rear beam and the two side walls, so that under the condition that the overall structural strength of the battery pack meets the requirements, the material usage is reduced, achieving the effect of reducing the weight of the battery pack. At the same time, by enclosing the front beam, the rear beam and the two side walls to form a frame structure, the reinforcement of the battery box body is realized, and the stability is higher.

[0031] Preferably, the battery box body further includes a fixing member, the fixing member is located inside 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 body further includes a reinforcing member, and the reinforcing member is arranged at the corresponding positions 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 reduction groove to reduce the gap between the side wall bracket and the quick-change bracket, and realizes a large contact area between the lock connection structure and the outer side surface of the bracket body, with high installation connection stability, so as to meet the support strength requirements of the battery pack and ensure the locking accuracy. At the same time, the first weight reduction groove plays a role in weight reduction, realizing the reduction of the overall weight of the battery pack, reducing the material consumption, and the first weight reduction groove has a simple structure and is convenient for processing and manufacturing.

[0041] The protective plate has a protective and shielding function. The protective plate is 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, and greatly improving the safety and stability of the electric vehicle.

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

[0043] In this solution, adopting the above structural form, the plurality of weight reduction cavities have a weight reduction effect, can effectively reduce the overall weight of the side wall bracket, so that the overall weight of the battery pack is reduced while ensuring that the overall structural strength of the battery pack meets the requirements, reducing the material consumption, and compared with only using a larger weight reduction cavity, using a plurality of weight reduction cavities can use the connection structure between them to enhance the support strength of the side wall bracket and further strengthen the structural strength of the side wall bracket. At the same time, by arranging the thickened part in the weight reduction cavity, the connection of the lock connection structure is ensured to be more stable and reliable, and no additional space is occupied; 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, the connection of the lock connection structure can be ensured to be more stable and reliable.

[0044] The present invention further discloses an electric vehicle, and the electric vehicle includes the battery pack as described above.

[0045] In this solution, the battery pack is applied to an electric vehicle. Thus, the battery body can be arranged in the accommodating cavity, and the accommodating cavity can protect the battery body, improving the service life of the battery body. Moreover, the above form can assemble the battery pack into an integral module, facilitating the subsequent installation of the battery pack in module form. Additionally, adopting the above structural form, the temperature regulating component can not only lower the temperature in the accommodating cavity but also raise the temperature in the accommodating cavity, which is beneficial to ensuring that the temperature in the accommodating cavity is at a normal level, so as to avoid the working state of components such as the battery body in the accommodating cavity being affected by the weather or the working environment, thereby ensuring the normal operation and performance stability of components such as the battery body in the accommodating cavity, improving the use safety and service life of components such as the battery body in the accommodating cavity. Especially when facing extremely cold or extremely hot weather, the temperature regulating component can reduce the influence of the external air temperature on the battery pack, which is beneficial to increasing the available scenarios of the battery pack and enhancing the versatility of the battery pack. When both the upper cover and the bottom plate are provided with temperature regulating components, it is beneficial to ensure the uniformity of temperature regulation of the battery pack, thereby ensuring the integrity of the battery pack's functions and improving the service life of the battery pack.

[0046] The positive and progressive effects of the present invention are as follows: The battery body is arranged in the accommodating cavity, and the accommodating cavity can protect the battery body, improving the service life of the battery body. Moreover, the above form can assemble the battery pack into an integral module, facilitating the subsequent installation of the battery pack in module form. Additionally, adopting the above structural form, the temperature regulating component can not only lower the temperature in the accommodating cavity but also raise the temperature in the accommodating cavity, which is beneficial to ensuring that the temperature in the accommodating cavity is at a normal level, so as to avoid the working state of components such as the battery body in the accommodating cavity being affected by the weather or the working environment, thereby ensuring the normal operation and performance stability of components such as the battery body in the accommodating cavity, improving the use safety and service life of components such as the battery body in the accommodating cavity. Especially when facing extremely cold or extremely hot weather, the temperature regulating component can reduce the influence of the external air temperature on the battery pack, which is beneficial to increasing the available scenarios of the battery pack and enhancing the versatility of the battery pack. When both the upper cover and the bottom plate are provided with temperature regulating components, it is beneficial to ensure the uniformity of temperature regulation of the battery pack, thereby ensuring the integrity of the battery pack's functions and improving the service life of the battery pack. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] Figure 1 It is a schematic structural diagram of the battery pack according to an embodiment of the present invention.

[0048] Figure 2 It is a schematic structural diagram of the battery pack according to an embodiment of the present invention, in which the closed cover is hidden.

[0049] Figure 3 It is a schematic structural diagram of the plate body at the upper cover according to an embodiment of the present invention.

[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 present invention.

[0051] Figure 5 It is a structural schematic diagram of the plate body at the upper cover of an embodiment of the present invention 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 present invention.

[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 present invention.

[0054] Figure 8 Schematic diagram of the structure of the flow channel of an embodiment of the present invention.

[0055] Figure 9 It is a schematic structural diagram of a battery box according to an embodiment of the present invention, in which the upper cover is hidden.

[0056] Figure 10 It is a schematic diagram of the cross-sectional structure of a battery box according to an embodiment of the present invention.

[0057] Figure 11 The structure of the reinforcement member of the embodiment of the present invention is shown in FIG. Figure 1 .

[0058] Figure 12 The structure of the reinforcement member of the embodiment of the present invention is shown in FIG. Figure 2 .

[0059] Figure 13 It is a partial three-dimensional structural schematic diagram of a reinforcement member according to a preferred embodiment of the present invention.

[0060] Figure 14 It is a schematic cross-sectional structural diagram of a battery box according to a preferred embodiment of the present invention.

[0061] Figure 15 for Figure 14 A partial enlarged schematic diagram of point B in the middle. Figure 16 FIG. 1 is a schematic structural diagram of a battery pack from another perspective of an embodiment of the present invention.

[0062] Figure 17 FIG. 1 is a schematic diagram of the three-dimensional structure of a battery pack according to an embodiment of the present invention from another perspective.

[0063] Figure 18 It is a partial enlarged schematic diagram of a battery pack according to an embodiment of the present invention.

[0064] Figure 19 Schematic diagram of the internal structure of the battery box at the electrical connector according to an embodiment of the present invention.

[0065] Figure 20Schematic diagram of the internal structure of the battery pack according to an embodiment of the present invention at the lock connection structure.

[0066] Figure 21 Schematic diagram of the internal structure of the battery pack according to an embodiment of the present invention at the guiding and positioning mechanism.

[0067] Explanation of reference numerals:

[0068] Battery pack 100, battery box body 1, frame structure 11, bottom plate 12, accommodation cavity 14, upper cover 15, opening 151, first opening 1511, second opening 1512, closing cover 152, first seal 153, temperature regulating member 16, temperature regulating plate 161, flow channel 1611, branch 16111, plate body 1612, protection plate 1613, connecting pipe 162, buffer member 17, front beam 18, mounting opening 181, second cavity 1811, rear beam 19, maintenance opening 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, protection plate 2011113, notch 20111131, thickened part 202, first connection hole 2021, weight reduction cavity 203, outer shell 204, transverse partition 205, longitudinal partition 206, inclined partition 207, first weight reduction groove 208, second weight reduction groove 209, first through hole 211, reinforcing member 2, first strengthening part 21, first supporting part 22, first cavity 23, second strengthening part 24, second supporting part 25, third strengthening part 26, protrusion 27, mounting seat 3, abutting part 31, connecting part 32, through hole 33, connection hole 34, fixing member 4, transverse rib 41, longitudinal rib 42, functional member 5, electrical connector 51, temperature regulating connector 52, pressure relief valve 53, sealing groove 6, lock connection structure 7, lock mounting seat 71, lock shaft 72, support shaft 73, guiding and positioning mechanism 8, positioning block 81, fastening member 82. Detailed implementation manners

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

[0070] As Figures 1 to 21As shown in the figure, this embodiment provides a battery pack 100, which includes a battery body and a battery box 1. The battery box 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 bottom of the receiving cavity 14. Temperature adjusting elements 16 are provided on the upper cover 15 and the bottom plate 12, and the temperature adjusting elements 16 are used to adjust the temperature in the receiving cavity 14. By arranging the battery body in the receiving cavity 14, the battery body can be protected through the receiving cavity 14, improving the service life of the battery body. Moreover, the above form can assemble the battery pack 100 into an integral module, facilitating the subsequent installation of the battery pack 100 in the form of a module. In addition, adopting the above structural form, the temperature adjusting elements 16 can not only lower the temperature in the receiving cavity 14 but also raise the temperature in the receiving cavity 14, which is beneficial to ensuring that the temperature in the receiving cavity 14 is at a normal level, so as to avoid the working state of components such as the battery body in the receiving cavity 14 being affected by the weather or the working environment, thereby ensuring the normal operation and performance stability of components such as the battery body in the receiving cavity 14, and improving the use safety and service life of components such as the battery body in the receiving cavity 14. Especially when facing extremely cold or extremely hot weather, the temperature adjusting elements 16 can reduce the influence of the external air temperature on the battery pack 100, which is beneficial to increasing the available scenarios of the battery pack 100 and enhancing the versatility of the battery pack 100. When temperature adjusting elements 16 are provided on both the upper cover 15 and the bottom plate 12, it is beneficial to ensure the uniformity of temperature adjustment of the battery pack 100, thereby ensuring the integrity of the functions of the battery pack 100 and improving the service life of the battery pack 100. Among them, temperature adjusting elements 16 are provided on both the upper cover 15 and the bottom plate 12, which is beneficial to ensuring the uniformity of temperature adjustment of the battery pack 100, thereby ensuring the integrity of the functions of the battery pack 100 and the service life. In other embodiments, the temperature adjusting element 16 can be provided only on the upper cover 15 or only on the bottom plate 12.

[0071] As Figure 3 , Figure 4 , Figure 6 and Figure 7As shown, the temperature regulating member 16 includes a temperature regulating plate 161. A flow channel 1611 is formed on the temperature regulating plate 161. The flow channel 1611 is used for the circulation of a temperature regulating medium. Thus, when the temperature regulating medium circulates in the flow channel 1611, the surface temperatures of the upper cover 15 and the bottom plate 12 can be reduced or increased, so as to reduce or increase the temperature in the accommodation cavity 14. Moreover, the temperature regulating member 16 is arranged in a plate shape and does not occupy too much space in the height direction of the battery box body 1, which is beneficial to ensuring that the size of the battery box body 1 is within a reasonable range. The temperature regulating connector 52 is communicated with the flow channel 1611 of the temperature regulating member 16 through a connecting pipe 162, so as to control the working mode of the temperature regulating connector 52 to be a liquid cooling mode or a heating mode according to the actual application scenario, thereby controlling the temperature of the temperature regulating medium in the flow channel 1611 through the temperature regulating connector 52, and thus realizing the reduction or increase of the temperature in the accommodation cavity 14. Wherein, the temperature regulating medium can be a liquid, a gas or other temperature adjustable media.

[0072] In this embodiment, the function of the temperature regulating member 16 is to reduce the temperature of the battery body, and the temperature regulating medium is a liquid. In other embodiments, the function of the temperature regulating member 16 and the type of the temperature regulating medium can be adjusted according to actual requirements, and no limitation is made here.

[0073] Wherein, as Figure 5 and Figure 6 shown, connecting pipes 162 are respectively arranged at the inlet and outlet of the flow channel 1611. The temperature regulating connector 52 is connected to the flow channel 1611 through the connecting pipes 162. Thus, the external temperature regulating medium sequentially passes through the temperature regulating connector 52 and the connecting pipes 162 and is introduced into the flow channel 1611, so as to realize the regulation of the temperature in the accommodation cavity 14. Connecting pipes 162 are respectively arranged at the inlet and outlet of the flow channel 1611. The two connecting pipes 162 can respectively realize the inflow and outflow of the temperature regulating medium. That is to say, the inflow and outflow of the temperature regulating medium can be carried out simultaneously, which also realizes that the temperature regulating medium can be continuously transported into the flow channel 1611 to replace the original temperature regulating medium in the flow channel 1611. In this way, the temperature regulating member 16 continuously regulates the temperature of the accommodation cavity 14.

[0074] As Figure 4As shown in the figure, the temperature adjustment plate 161 includes a plate body 1612 and a protection 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, and the flow channel 1611 is recessed towards the direction close to the upper cover 15 or the bottom plate 12; the protection plate 1613 covers at least the recessed area on the plate body 1612 to form a closed flow channel 1611. The plate body 1612 and the protection plate 1613 together form a closed flow channel 1611, which is beneficial to avoid the overflow of the temperature adjustment medium. At the same time, the use of the split plate body 1612 and protection plate 1613 to install and form the temperature adjustment plate 161 is beneficial to improve the convenience during manufacturing. If a closed flow channel 1611 is directly opened in the integral temperature adjustment plate 161, the manufacturing difficulty is high.

[0075] In some embodiments where the temperature adjustment member 16 is only provided on the upper cover 15 or 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] Please refer to Figure 8 For understanding, the flow channel 1611 includes a plurality of branches 16111 that are sequentially connected. The branches 16111 are at least opened in the first area of the temperature adjustment plate 161, and the shape of the branches 16111 is in a shape of a "J". In other alternative embodiments, the shape of the branches 16111 can also be in a shape of a bow or other similar shapes. With the above structural form, through a plurality of branches 16111 that are sequentially connected, it is ensured that the temperature adjustment medium can flow normally in the flow channel 1611. The shape of the branches 16111 is in a shape of a "J", which increases the distribution area of the branches 16111, makes the flow area of the temperature adjustment medium wider, and improves the temperature adjustment efficiency of the temperature adjustment medium for the overall battery body in the accommodation cavity 14.

[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 adjustment member 16 is only provided on the upper cover 15 or only provided on the bottom plate 12, the first area is only provided on the upper cover 15 or only provided on the bottom plate 12.

[0078] There are several implementation manners for the branches 16111: The first implementation manner is that a plurality of branches 16111 are arranged at intervals along the length direction of the temperature adjustment plate 161; the second implementation manner is that each branch 16111 extends from one side of the temperature adjustment plate 161 to the other side along the width direction of the temperature adjustment plate 161; the third implementation manner is that a plurality of branches 16111 are arranged at intervals along the length direction of the temperature adjustment plate 161, and each branch 16111 extends from one side of the temperature adjustment plate 161 to the other side along the width direction of the temperature adjustment plate 161. As Figure 8As shown, preferably, a plurality of branches 16111 are arranged at intervals along the length direction of the temperature adjusting plate 161, and each branch 16111 extends from one side of the temperature adjusting plate 161 to the other side of the temperature adjusting plate 161 along the width direction of the temperature adjusting plate 161, thereby further increasing the distribution area of the branches 16111, so that the circulation area of the temperature adjusting medium is wider, and the temperature adjusting efficiency of the temperature adjusting medium for the entire battery body is improved.

[0079] As Figure 6 shown, the inlet and outlet of the flow channel 1611 are located on the same side of the temperature adjusting plate 161, and there are several implementation manners for the flow channel 1611: In the first implementation manner, the flow channel 1611 is arranged to surround at least the top of the battery body from the inlet and then reaches the outlet; In the second implementation manner, the flow channel 1611 is arranged to surround at least the bottom of the battery body from the inlet and then reaches the outlet; In the third implementation manner, the flow channel 1611 is arranged to surround 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 to surround at least the top and bottom of the battery body from the inlet and then reaches the outlet. Specifically, the temperature adjusting medium flows into the flow channel 1611 from the inlet, and flows out from the outlet after flowing through the flow channel 1611. Setting the inlet and outlet on the same side of the temperature adjusting plate 161 increases the flow path of the flow channel 1611, thereby increasing the circulation area of the temperature adjusting medium and improving the temperature adjusting efficiency of the temperature adjusting medium for the entire battery body. In addition, adopting the above structural form facilitates the connection between the temperature adjusting connector 52 and the flow channel 1611.

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

[0081] Furthermore, one end of the connecting pipe 162 close to the temperature adjusting connector 52 is a flexible pipe, and one end of the connecting pipe 162 close to the temperature adjusting connector 52 is sleeved on the interface of the temperature adjusting connector 52 through the flexible pipe. Adopting the above structural form, one end of the connecting pipe 162 close to the temperature adjusting connector 52 is set as a flexible pipe, which facilitates the floating of the temperature adjusting connector 52.

[0082] In this embodiment, the connecting pipe 162 is integrally provided as a flexible pipe. In other embodiments, the connecting pipe 162 may also be provided in the form of a flexible pipe only at one end close to the temperature-adjusting connecting pipe 162.

[0083] There are several implementation manners for the temperature-adjusting plate 161: In the first implementation manner, a recess for accommodating one end of the connecting pipe 162 close to the battery body is provided on the side of the temperature-adjusting plate 161 facing away from the battery body; in the second implementation manner, a recess for accommodating one end of the connecting pipe 162 close to the battery body is provided on the side of the temperature-adjusting plate 161 facing the battery body; in the third implementation manner, recesses for accommodating one end of the connecting pipe 162 close to the battery body are provided on both the side of the temperature-adjusting plate 161 facing away from and facing the battery body. In this embodiment, a recess for accommodating one end of the connecting pipe 162 close to the battery body is provided on the side of the temperature-adjusting plate 161 facing away from the battery body, and it is arranged at a position close to the frame structure 11, so as to prevent interference between the temperature-adjusting plate 161 and the connecting pipe 162 and between the connecting pipe 162 and the reinforcing member 2, ensuring that the temperature-adjusting plate 161 can work normally. In addition, providing the recess can also reduce the size of the battery pack 100 in the height direction, improving the compactness of the structure of the battery pack 100.

[0084] The temperature-adjusting connector 52 is connected to at least one outer wall of the battery box body 1, and the material of the outer wall on which the temperature-adjusting connector 52 is installed is a profile. With the above structural form, the side wall 20 on which the temperature-adjusting connector 52 is installed is processed and made of a profile, reducing the complexity of the processing technology, having the characteristics of low cost, and moreover, the structural strength of the outer wall processed and made of the profile is higher, enabling the load-bearing capacity of the outer wall on which the temperature-adjusting connector 52 is installed to be higher, thereby improving the stability and seismic resistance of the battery pack 100.

[0085] Furthermore, the temperature-adjusting member 16 further includes a circulation pipeline, the circulation pipeline is laid in the flow channel 1611, and the temperature-adjusting medium circulates in the circulation pipeline. Using the circulation pipeline to accommodate the temperature-adjusting medium solves the sealing problem, and thus reduces the sealing requirement between the protection plate 1613 and the plate body 1612. Of course, the flow channel 1611 may not be provided, and the circulation pipeline is directly fixed to the temperature-adjusting plate 161 and wound into a zigzag shape. In this case, without the limit protection of the flow channel 1611, the service life of the circulation pipeline will be limited. Therefore, in this embodiment, by providing the flow channel 1611 and laying the circulation pipeline in the flow channel 1611, it is beneficial to improve the service life of the circulation pipeline.

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

[0087] As Figure 1 and Figure 3 shown, by providing an opening 151 communicating with the accommodation cavity 14 on the upper cover 15 and / or the bottom plate 12 of the battery box body 1, and using a detachable closing cover 152 to control the opening and closing of the opening 151, when the functional component 5 in the battery box body 1 needs to be repaired or replaced, the closing cover 152 can be removed, and the functional component 5 can be repaired and replaced through the opening 151. In this way, the upper cover 15 does not need to be removed, which is beneficial to reducing the workload of the later maintenance of the battery pack 100 and improving the later maintenance efficiency of the battery pack 100. Especially when the fixing method of the upper cover 15 or the bottom plate 12 is adhesive fixing, the provision of the opening 151 or the bottom plate 12 can solve problems such as the upper cover 15 being unable to be removed or the fixing effect being poor after removal and re-fixing, which is beneficial to ensuring the performance integrity of the battery pack 100 after maintenance.

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

[0089] Among them, as Figure 3 shown, the opening 151 includes a first opening 1511 and a second opening 1512. The position of the first opening 1511 corresponds to the positions of the electrical connector 51 and the temperature control connector 52, and the position of the second opening 1512 corresponds to the position of the control board. By correspondingly providing different openings 151 for different functional components 5 in a targeted manner, and the positions of the openings 151 corresponding to the functional components 5, on the one hand, it can improve the convenience during repair and replacement and further improve the maintenance efficiency. On the other hand, compared with a single opening 151 having a larger size requirement to meet the maintenance of multiple functional components 5, multiple openings 151 are relatively scattered on the battery box body 1, which is beneficial to ensuring the structural strength of the battery box body 1.

[0090] Preferably, the size of the opening 151 is not less than the size of the functional component 5, so as to improve the convenience during repair or replacement and prevent the situation that the operation is restricted due to the opening 151 being too small.

[0091] In this embodiment, the battery box body 1 further includes a first sealing member 153 disposed between the closing cover 152 and the upper cover 15. The first sealing member 153 is used to fill the gap between the closing cover 152 and the upper cover 15, which is beneficial to improving the connection sealing performance between the closing cover 152 and the upper cover 15, avoiding external dust or liquid from entering the accommodation cavity 14 through the opening 151, and is beneficial to ensuring the use 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 body 1 further includes a second sealing member disposed between the closing cover 152 and the bottom plate 12. 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 performance between the closing cover 152 and the bottom plate 12. Among them, the first sealing member 153 and the second sealing member can be rubber sealing, plastic sealing, metal sealing or other sealing forms.

[0093] Please refer to Figures 10 to 12 for understanding. The battery box body 1 further includes a reinforcing member 2 disposed between the temperature regulating member 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 towards the direction close to the battery body, and is used to support the battery body. With the above structural form, by disposing the reinforcing member 2 between the temperature regulating member 16 and the bottom plate 12, the bottom plate 12 can be strengthened through the reinforcing member 2, the strength of the bottom plate 12 is improved, 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 for supporting the battery body, and further improving the stability and reliability of the placement of the battery body.

[0094] As Figure 11 and Figure 15 shown, the reinforcing member 2 includes a first reinforcing portion 21 and a first supporting portion 22. The first reinforcing portion 21 is connected to the bottom plate 12, the first supporting portion 22 is connected to the first reinforcing portion 21, and extends from the first reinforcing portion 21 towards the direction close to the battery body. The first supporting portion 22 is used to support the battery body. With the above structural form, by connecting the first reinforcing portion 21 to the bottom plate 12 and abutting the first supporting portion 22 against the battery body, the battery body can be supported through the first reinforcing portion 21 and the first supporting portion 22, thereby improving the strength and stability of the bottom plate 12 for supporting the battery body, and further improving the stability and reliability of the placement of the battery body in the accommodation cavity 14. Specifically, in this embodiment, the lower surface of the first reinforcing portion 21 is connected to the upper surface of the bottom plate 12, and the first supporting portion 22 is connected to the upper surface of the first reinforcing portion 21, so that the reinforcing member 2 can support the battery body through the first supporting portion 22.

[0095] In order to improve the structural strength of the reinforcing member 2, it is preferably that the first reinforcing portion 21 and the first supporting portion 22 are integrally formed. In other embodiments, the first reinforcing portion 21 and the first supporting portion 22 can also be separately provided. Thus, when one of the first reinforcing portion 21 and the first supporting portion 22 is damaged, only the damaged first reinforcing portion 21 and first supporting portion 22 need to be replaced to be used normally, reducing the use cost.

[0096] In order to reduce the weight and usage cost of the reinforcement member 2, it is preferred that a first cavity 23 is formed on the reinforcement member 2. The number of the first support portions 22 is multiple, and the multiple first support portions 22 are arranged at intervals along the extending direction of the first reinforcement portion 21, so as to form a first cavity 23 between two adjacent first support portions 22.

[0097] In this embodiment, the number of the first support portions 22 is greater than four, so that a plurality of first cavities 23 can be formed, thereby reducing the weight and usage cost of the reinforcement member 2 while ensuring the overall structural strength. In other embodiments, the specific number of the first support portions 22 can be adjusted according to actual requirements and will not be limited herein.

[0098] As Figure 11 、 Figure 12 and Figure 15 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 towards the bottom plate 12 for connecting to the bottom plate 12. With the above structural form, through the second reinforcement portion 24 and the second support portion 25, while further improving the strength of the bottom plate 12, the strength of the first reinforcement portion 21 and the first support portion 22 is also improved, thereby further improving the strength and stability of the bottom plate 12 for supporting the battery body, and further improving the stability and reliability of the battery body placed in the accommodation 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 the one of the multiple first support portions 22 that is farthest from the frame structure 11. Further, 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, and further improving the stability and reliability of the second support portion 25 for 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 position of the side wall 20 of the first support portion 22 close to the top wall, so that the battery body can be supported by the second reinforcement portion 24.

[0100] The number of the second support portions 25 is multiple, and the multiple second support portions 25 are arranged at intervals along the extending direction of the second reinforcement portion 24, so as to form a first cavity 23 between two adjacent second support portions 25. With the above structural form, while ensuring the overall structural strength, the weight and usage cost of the reinforcement member 2 are reduced.

[0101] In this embodiment, the number of the second support portions 25 is greater than four, so that a plurality of first cavities 23 can be formed, thereby reducing the weight and usage cost of the reinforcing member 2 while ensuring the overall structural strength. In other embodiments, the specific number of the second support portions 25 can be adjusted according to actual requirements and will not be limited herein.

[0102] In addition, in this embodiment, the second reinforcing portion 24 and the second support portion 25 are integrally formed. In other embodiments, the second reinforcing portion 24 and the second support portion 25 can also be separately provided. Thus, if one of the second reinforcing portion 24 and the second support portion 25 is damaged, only the damaged second reinforcing portion 24 and second support portion 25 need to be replaced to be used normally, reducing the usage cost.

[0103] As Figure 12 and Figure 13 shown, the reinforcing member 2 further includes a third reinforcing portion 26. The third reinforcing portion 26 is connected to the first support portion 22 close to the frame structure 11. One end of the first support portion 22 close to the battery body is connected to the third reinforcing portion 26, and the other end is connected to the first reinforcing portion 21. With the above structural form, the overall strength of the reinforcing member 2 close to the frame structure 11 is improved through the third reinforcing portion 26, thereby further improving the strength and stability of the bottom plate 12 for supporting the battery body, and further improving the stability and reliability of the battery body placed in the accommodation cavity 14. At the same time, the connection between the frame structure 11 and the bottom plate 12 can also be strengthened, thereby further improving the firmness of the battery box.

[0104] During specific use, two adjacent first support 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 support portions 22, thereby further improving the structural strength of the reinforcing member 2.

[0105] To improve the structural strength of the reinforcing member 2, it is preferred that the first reinforcing portion 21, the first support portion 22 and the third reinforcing portion 26 are integrally formed.

[0106] As Figure 12 and Figure 13 shown, the reinforcing member 2 further includes a protrusion 27. The protrusion 27 is connected to the side of the third reinforcing portion 26 away from the first support portion 22 and extends from the third reinforcing portion 26 towards the direction close to the battery body. The protrusion 27 is used to support the battery body. With the above structural form, the support of the reinforcing member 2 for the battery body is realized through the protrusion 27.

[0107] During specific use, the number of the protrusions 27 is multiple, and the multiple protrusions 27 are arranged at intervals along the extending direction of the third reinforcing portion 26, thereby improving the stability and reliability of the protrusion 27 for supporting the battery body.

[0108] The battery pack 100 further includes a connecting member. A third through-hole is formed in at least one first support portion 22 away from the frame structure 11, and a fourth through-hole is formed in the bottom plate 12. The third through-hole and the fourth through-hole are connected by the connecting member. With the above structure, the connecting member realizes the connection between the reinforcing member 2 away from the frame structure 11 and the bottom plate 12. In addition, with the above structure, the connection between the reinforcing member 2 and the bottom plate 12 is facilitated.

[0109] In this embodiment, the number of the reinforcing members 2 away from the frame structure 11 is taken as an example for illustrative expression. In other embodiments, the number of the reinforcing members 2 away from the frame structure 11 can be adjusted according to actual needs and is not limited herein.

[0110] In addition, in this embodiment, the connecting member is a bolt. In other embodiments, the type of the connecting member can also be other forms and is not limited herein.

[0111] As Figure 12 shown, the battery box body 1 further includes a buffer member 17, and the buffer member 17 is disposed between the temperature regulating member 16 and the bottom plate 12. With the above structure, the buffer member 17 can provide buffering for the battery body, preventing the battery body from being damaged by collision during transportation, thereby further improving the use 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 herein.

[0113] One side of the temperature regulating member 16 is connected to the reinforcing member 2 and one end of the buffer member 17 away from the bottom plate 12, and the other side is connected to the battery body. With the above structure, the temperature regulating member 16 is disposed on the side close to the battery body in the buffer member 17 and the reinforcing member 2, improving the efficiency of the temperature regulating member 16 in changing the temperature of the battery body. In this embodiment, the temperature regulating member 16 is in direct contact with the battery body, thereby further improving the efficiency of the temperature regulating member 16 in changing the temperature of the battery body.

[0114] As Figure 12 and Figure 13 shown, a groove is formed in the first surface of the bottom plate 12 close to the battery body, and the groove is used to accommodate the reinforcing member 2. With the above structure, the placement of the reinforcing member 2 is facilitated. Specifically, the four sides of the bottom plate 12 are all connected to the frame structure 11 by bolts, and grooves are formed in the part of the upper surface of the bottom plate 12 away from the four sides.

[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 herein.

[0116] In a specific embodiment, such as Figure 12 and Figure 14 shown, the lower plate structure of the battery box body 1 includes: a bottom plate 12 at the lower layer, a buffer member 17 and a reinforcing member 2 at the middle layer, and a temperature regulating member 16 at the upper layer. Among them, the lower side of the temperature regulating member 16 is respectively connected to the reinforcing member 2 and one end of the buffer member 17 away from the bottom plate 12, and the upper side of the temperature regulating member 16 is connected to the battery body. The reinforcing member 2 is laid at the corresponding positions of the upper frame structure 11 and the fixing member 4 on the bottom plate 12 and extends in a direction away from the frame structure 11 and the fixing member 4. The buffer member 17 is laid between adjacent reinforcing members 2 on the bottom plate 12.

[0117] Such as Figure 1 , Figure 10 , Figure 12 and Figure 14 shown, the battery box body 1 further includes a front beam 18, a rear beam 19 and two side walls 20. The front beam 18 and the rear beam 19 are respectively connected to the front and rear ends of the two side walls 20, so that a frame structure 11 is formed by enclosing between the front beam 18, the rear beam 19 and the two side walls 20; the interiors of the front beam 18, the rear beam 19 and the two side walls 20 all have a second cavity 1811. With the above structural form, the battery body can be protected through 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 interiors of the front beam 18, the rear beam 19 and the two side walls 20 all have a second cavity 1811, so that while ensuring that the overall structural strength of the battery pack 100 meets the requirements, the material usage is reduced, achieving the effect of reducing the weight of the battery pack 100. At the same time, by enclosing the front beam 18, the rear beam 19 and the two side walls 20 to form the frame structure 11, the reinforcement of the battery box body 1 is realized, and the stability is higher.

[0118] Such as Figure 18 shown, a sealing groove 6 for accommodating sealant is provided on the top surface of the frame structure 11. 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 through the sealant. A sealing groove 6 is provided in a circle on the top surface of the frame structure 11, and the sealant is arranged in the sealing groove 6, so that the upper cover 15 is bonded to the top surface of the frame structure 11 through the sealant, realizing the sealed connection between the upper cover 15 and the frame structure 11 through the sealant, and the sealing effect is good; at the same time, the overflow of the sealant is effectively avoided through the sealing groove 6, and the stability is higher.

[0119] Optionally, the top surface of the frame structure 11 has a plurality of seal grooves 6 for accommodating sealant, and the plurality of seal grooves 6 are arranged around the frame structure 11. Alternatively, the top surface of the frame structure 11 has a seal groove 6 for accommodating sealant, and the seal groove 6 is arranged around the frame structure 11. For example, the seal groove 6 is a circular seal groove, and the circular seal groove is arranged around the frame structure 11. As Figure 1 and Figure 2 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 temperature control 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 temperature control 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 temperature control connector 52 are respectively inserted into or disconnected from the vehicle-end electrical connector 51 and the vehicle-end temperature control connector 52 on the electric vehicle. When they are inserted into each other, the battery pack 100 provides power to the electric vehicle and changes the temperature inside the battery pack 100. Thus, the insertion and disconnection are synchronized, making the insertion between the electrical connector 51 and the temperature control connector 52 and the vehicle-end electrical connector 51 and the vehicle-end temperature control connector 52 on the electric vehicle more stable and reliable, effectively avoiding the problem of unstable connection; and making the overall structure of the battery pack 100 more compact. At the same time, by installing a pressure relief on the front beam 18 and / or the rear beam 19 to relieve the pressure at the front end and / or the rear end inside the battery pack 100, effectively preventing the internal pressure of the battery pack 100 from being too large, and the safety and stability are higher.

[0120] In this embodiment, the number of pressure relief valves 53 is four. Two pressure relief valves 53 are respectively located on the front beam 18 and the rear beam 19, 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] As Figure 1 and Figure 9 shown, the battery box body 1 further includes a mounting seat 3. An installation opening 181 is formed on the outer wall of the temperature control connector 52 for installation. The mounting seat 3 is embedded into the installation opening 181 and connected to the outer wall, and the temperature control connector 52 is connected to the mounting seat 3. By embedding the mounting seat 3 into the installation opening 181 and connecting it to the frame structure 11, and installing the temperature control connector 52 through the mounting seat 3, the temperature control connector 52 is stably installed on the frame structure 11, ensuring the installation strength requirement of the temperature control connector 52, and thus effectively improving the connection stability of the overall structure of the battery pack 100 and the seismic performance of the battery pack 100.

[0122] As Figure 19As shown, the mounting base 3 includes a abutting portion 31 and a connecting portion 32. One end of the abutting portion 31 is connected to the outer edge of the connecting portion 32, and the other end of the abutting portion 31 extends outward along the plate surface direction of the mounting base 3, and the abutting portion 31 abuts against the side of the front beam 18 and / or the rear beam 19 facing away from the battery body. After the connecting portion 32 is embedded into the second cavity 1811, it is connected to the outer wall of the second cavity 1811 close to the battery body. The mounting base 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. By the abutting portion 31 abutting against the side of the front beam 18 and / or the rear beam 19 facing away from the battery body, the mounting base 3 and the frame structure 11 are in abutting contact with each other, and the mounting base 3 cannot slide into the battery pack 100 anymore, indicating that the mounting base 3 is installed in place, thus realizing the precise positioning of the mounting base 3. At the same time, after the connecting portion 32 is embedded into the second cavity 1811, it is connected to the outer wall of the second cavity 1811 close to the battery body, thereby realizing the stable connection of the mounting base 3 to the frame structure 11. The installation connection is very convenient and can ensure the installation stability of the mounting base 3. Among them, one end of the connecting portion 32 far 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 to effectively strengthen the structural connection strength.

[0123] Please refer to Figure 18 for understanding. The middle area of the mounting base 3 has a through hole 33 for communicating with the inside of the battery box body 1. A plurality of connecting holes 34 are formed in the mounting base 3, and the plurality of connecting holes 34 are distributed on the outer edge of the through hole 33. The temperature regulating connector 52 is detachably connected to the plurality of connecting holes 34 on the mounting base 3 and is connected to the battery body after passing through the through hole 33. The temperature regulating connector 52 passes through the through hole 33 from the outside of the battery pack 100 and extends into the battery pack 100. Through the through hole 33, the temperature regulating connector 52 is convenient to pass through the battery box body 1 and connect with the battery body. The temperature regulating connector 52 passes through the through hole 33 and is connected to the plurality of connecting holes 34, and the plurality of connecting holes 34 are distributed on the outer edge of the through hole 33, thereby realizing the fixation around the temperature regulating connector 52. The installation connection is stable and reliable. At the same time, through the plurality of connecting holes 34, the installation and disassembly are very convenient, and the structure is simple and the processing and manufacturing are very convenient.

[0124] As Figure 16 and Figure 17As shown in the figure, the battery box body 1 further includes a maintenance bin 201. A maintenance opening 191 is formed in the rear beam 19. The maintenance bin 201 is detachably connected to the rear beam 19 and is used to hermetically cover the maintenance opening 191. When maintenance of the battery pack 100 is required, the maintenance bin 201 can be detached from the rear beam 19, and the interior of the battery pack 100 can be maintained through the maintenance opening 191, which is convenient for maintenance and repair. After the maintenance and repair, the maintenance bin 201 is installed and connected to the rear beam 19, so as to hermetically cover the maintenance opening 191, with high safety and stability, simple structure, and convenient processing and manufacturing.

[0125] The battery box body 1 further includes a fixing member 4. The fixing member 4 is located inside the frame structure 11, and the fixing member 4 is connected to the front beam 18, the rear beam 19, and the two side walls 20. With the above structural form, the fixing member 4 can effectively enhance the structural strength of the battery box body 1 itself, effectively avoid the deformation of the battery pack 100, and has high seismic performance, greatly improving the safety and stability of the battery pack 100.

[0126] As Figure 9 shown in the figure, the fixing member 4 includes a transverse rib 41 and a longitudinal rib 42 that are cross-connected to each other, which has the characteristics of simple structure and convenient processing and manufacturing, reducing the 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 and one of the transverse ribs 41 are connected 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 reinforcing member 2 is provided at the corresponding positions of the front beam 18, the rear beam 19, and the transverse rib 41 of the fixing member 4 on the bottom plate 12. Specifically, for the reinforcing member 2 provided at the corresponding positions of the front beam 18 and the rear beam 19 on the bottom plate 12, the reinforcing member 2 is connected to the front beam 18 and the rear beam 19, so that the connection positions of the bottom plate 12, the front beam 18, and the rear beam 19 can be strengthened through the reinforcing member 2; for the reinforcing member 2 provided at the corresponding position of the transverse rib 41 of the fixing member 4 on the bottom plate 12, in the projection in the height direction of the battery pack 100, the reinforcing member 2 can cover the transverse rib 41, so that the connection position of the transverse rib 41 and the side wall 20 can be strengthened through the reinforcing member 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, it is preferred that the interior of the fixing member 4 has a third cavity.

[0128] The setting positions of the reinforcing member 2 can be implemented in the following ways. In the first implementation, the reinforcing member 2 is arranged at the corresponding position of the frame structure 11 on the bottom plate 12; in the second implementation, the reinforcing member 2 is arranged at the corresponding position of the fixing member 4 on the bottom plate 12; in the third implementation, the reinforcing member 2 is arranged at the corresponding position of the frame structure 11 on the bottom plate 12. Specifically, the reinforcing member 2 can be arranged at the corresponding position of the transverse rib 42 on the bottom plate 12. As Figure 10 and Figure 11 shown, preferably, the reinforcing member 2 can be arranged at the corresponding position of the transverse rib 42 on the bottom plate 12 and extend away from the frame structure 11 and the fixing member 4. With the above structural form, a plurality of reinforcing members 2 are arranged at intervals along the extending direction of the bottom plate 12, further improving the strength of the bottom plate 12, thereby improving the strength and stability of the bottom plate 12 for supporting the battery body, and further improving the stability and reliability of the battery body placed in the accommodating cavity 14. In addition, by strengthening the connection between the bottom plate 12 and the frame structure 11 and the corresponding position of the fixing member 4 through the reinforcing member 2, the structural strength of the battery box body is improved.

[0129] As Figure 17 and Figure 18 shown, the battery pack 100 includes a plurality of lock connection structures 7. There are side wall brackets 2011 on the side wall 20, and both of the two side wall brackets 2011 include bracket bodies 20111; a plurality of reinforcing ribs 201111 are arranged 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 structures 7 are arranged between the reinforcing ribs 201111. Connecting the two side wall brackets 2011 to the opposite sides of the battery body along the length direction respectively makes the connection contact area between the two side wall brackets 2011 and the battery body large, effectively strengthening the connection strength between the battery body and the two side wall brackets 2011. By arranging a plurality of reinforcing ribs 201111 protruding outward 27 on the outer side of the bracket body 20111 facing away from the battery body and arranging the lock connection structures 7 between the reinforcing ribs 201111, the connection strength between the plurality of lock connection structures 7 and the side wall brackets 2011 is effectively strengthened, meeting the support strength requirements of the battery pack 100 and ensuring the locking accuracy. At the same time, the plurality of reinforcing ribs 201111 are arranged at intervals along the length direction of the bracket body 20111, achieving the effect of reducing the weight of the side wall bracket 2011 on the basis of meeting the load-bearing strength of the side wall bracket 2011, reducing the material usage, so as to achieve the effect of reducing the weight of the battery pack 100 and improving the support strength of the side wall bracket 2011; and the processing technology is simple and the cost is low.

[0130] Please refer to Figure 20For understanding, the side wall bracket 2011 further includes a thickening portion 202. The thickening portion 202 is disposed within the bracket body 20111 and is correspondingly arranged with the reinforcing rib 201111 outside the bracket body 20111. By disposing the thickening portion 202 within the bracket body 20111 and correspondingly arranging it with the reinforcing rib 201111 outside the bracket body 20111, the thickening 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, since the thickening portion 202 is disposed within the bracket body 20111, it does not occupy extra space, achieving a more compact structure.

[0131] As Figure 20 shown, the bracket body 20111 has a plurality of weight reduction cavities 203. The thickening portion 202 is disposed within the weight reduction cavity 203 and is connected to the inner wall of the bracket body 20111 close to the reinforcing rib 201111. The locking connection structure 7 passes through the side wall 20 of the bracket body 20111 and is connected within the thickening portion 202. The bracket body 20111 has a plurality of weight reduction cavities 203. The plurality of weight reduction cavities 203 have a weight reduction effect, which can effectively reduce the overall weight of the side wall bracket 2011, enabling the overall weight of the battery pack 100 to be reduced while ensuring that the overall structural strength of the battery pack 100 meets the requirements, reducing the use of materials. And compared with using only one larger weight reduction cavity 203, using a plurality of weight reduction cavities 203 can utilize the connection structure between them to enhance the support strength of the side wall bracket 2011, further strengthening the structural strength of the side wall bracket 2011. At the same time, by disposing the thickening portion 202 in the weight reduction cavity 203, the connection of the locking connection structure 7 is ensured to be more stable and reliable, and it does not occupy extra space. The thickening 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 thickening portion 202 and the bracket body 20111 can be utilized to enhance the load-bearing strength of the side wall bracket 2011. Thus, when the locking connection structure 7 passes through the side wall of the bracket body 20111 and is connected within the thickening portion 202, the connection of the locking connection structure 7 can be ensured to be more stable and reliable.

[0132] As Figure 21As shown, the bracket body 20111 includes a housing 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 both sides of the housing 204. The transverse partition 205, the longitudinal partition 206, and the inclined partition 207 are all connected inside the housing 204 and divide the space inside the housing 204 into multiple weight-reducing cavities 203. The transverse partition 205, the longitudinal partition 206, and the inclined partition 207 are all connected inside the housing 204 and are interconnected to divide the relatively large space inside the housing 204 into multiple weight-reducing cavities 203. By the distribution settings of the transverse partition 205, the longitudinal partition 206, and the inclined partition 207, the structural strength of the bracket body 20111 can be greatly enhanced, thereby improving the safety stability and seismic performance of the battery pack 100. Among them, the housing 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 partition 205, the longitudinal partition 206, and the inclined partition 207 may not be limited, and can be installed and set according to the strength requirements.

[0133] In this embodiment, the thickening portion 202 is arranged inside the housing 204, and the thickening portion 202 and the multiple reinforcing ribs 201111 are distributed corresponding to both the inside and outside of the housing 204. The thickening 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 thickening portion 202 and the bracket body 20111 may also be of a split structure, and the thickening portion 202 can be inserted into the weight-reducing cavity 203 of the bracket body 20111 during use.

[0134] Such as Figure 20As shown, on the outer side of the bracket body 20111 facing away from the battery body, there is a first weight-reducing groove 208 that is recessed inward. The first weight-reducing groove 208 is provided between two adjacent reinforcing ribs 201111. One end of the lock connection structure 7 extends into the first weight-reducing groove 208 and is connected to the bracket body 20111. The other end of the lock 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. On the outer side of the bracket body 20111 facing away from the battery body, there are multiple reinforcing ribs 201111 that protrude outward 27 and a first weight-reducing groove 208 that is recessed inward. The first weight-reducing groove 208 is provided between two adjacent reinforcing ribs 201111, that is, the first weight-reducing groove 208 is recessed inward from the protruding 27 surface of two adjacent reinforcing ribs 201111, so that the bottom of the first weight-reducing groove 208 is a horizontal plane. By extending the lock connection structure 7 into the first weight-reducing groove 208, the gap between the side wall bracket 2011 and the quick-change bracket is reduced, and the fitting contact area between the lock connection structure 7 and the outer side surface of the bracket body 20111 is large, and the installation connection stability is high, thus meeting the support strength requirements of the battery pack 100 and ensuring the locking accuracy. At the same time, through the first weight-reducing groove 208, a weight-reducing effect is achieved, the overall weight of the battery pack 100 is reduced, the material consumption is reduced, and the first weight-reducing groove 208 has a simple structure and is convenient for processing and manufacturing.

[0135] Please refer to Figure 21 for understanding. The reinforcing rib 201111 includes an upper reinforcing rib 2011111 and a lower reinforcing rib 2011112. The upper reinforcing rib 2011111 and the lower reinforcing rib 2011112 are connected to the bracket body 20111 at intervals 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 forms 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 consumption 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 convenient for processing and manufacturing.

[0136] As Figure 20As shown, the lock connection structure 7 includes a lock mounting base 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 base 71. The lock mounting base 71 is mounted on the bracket body 20111. The lock shaft 72 is connected to the outer side of the lock mounting base 71 facing away from the battery body and is used for locking connection with the locking mechanism on the quick-change bracket. The support shaft 73 is connected to the inner side of the lock mounting base 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 precise positioning is achieved through the support shaft 73, ensuring the installation accuracy, further improving the installation connection strength, and being convenient for installation. Both sides of the lock mounting base 71 act on the locking mechanism and the side wall bracket 2011 respectively through the lock shaft 72 and the support shaft 73, forming bilateral force, so that the support shaft 73 can share the shear force received by the lock shaft 72 during actual operation, 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, effectively avoiding the displacement of the lock connection structure 7 and further ensuring the locking accuracy.

[0137] As Figure 20 shown, the battery pack 100 further includes a guiding and positioning mechanism 8. The guiding and positioning mechanism 8 is respectively arranged on the outer side of the bracket body 20111 facing away from the battery body, and the guiding and positioning mechanism 8 is connected to the reinforcing rib 201111. The guiding and positioning mechanism 8 plays a guiding role during the installation process of the battery pack 100, achieving precise alignment between the battery pack 100 and the quick-change bracket at the bottom of the electric vehicle, making the installation accuracy of the battery pack 100 higher, and abutting against the installation surface of the locking mechanism on the quick-change bracket of the electric vehicle after the battery pack 100 is installed to prevent the lock shaft 72 from falling off from the side, ensuring stable and reliable locking. At the same time, certain forces are exerted on the vehicle body in the width direction on both sides of the battery pack 100, 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 guiding and positioning mechanism 8 is connected to the reinforcing rib 201111 with high strength, achieving more stable and reliable connection.

[0138] As Figure 21As shown in the figure, the guiding and positioning mechanism 8 includes a positioning block 81 and a plurality of fastening components 82. A plurality of first through holes 211 are correspondingly formed on the bracket body 20111 and the reinforcing rib 201111, and a plurality of first connection holes 2021 are formed on the thickening part 202. The fastening component 82 passes through the first through hole 211 and is connected to the first connection hole 2021. The fastening component 82 passes through the first through hole 211 on the bracket body 20111 and the reinforcing rib 201111, and the fastening component 82 is connected in the first connection hole 2021 on the thickening part 202, so as to realize the installation and connection of the guiding and positioning mechanism 8 on the bracket body 20111, the reinforcing rib 201111 and the thickening part 202, further realizing 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 is very convenient. Specifically, the number of the fastening components 82 is four, and the four fastening components 82 are respectively installed and connected at the four corners of the positioning block 81; the two upper fastening components 82 are connected to the upper reinforcing rib 2011111, and the two lower 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, gravel and water are easily introduced into the gap to 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] As Figure 20 shown in the figure, the side wall bracket 2011 further 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. There is a gap between the battery pack 100 and the quick-change bracket. By connecting the protective plate 2011113 to the outer side of the bracket body 20111 facing away from the battery body and extending outward, the protective plate 2011113 has a protective and shielding effect. 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] Wherein, the width of the outward extension of the protective plate 2011113 is smaller than the thickness of the guiding and positioning mechanism 8. The guiding and positioning mechanism 8 will be located in the quick-change bracket and act on the inner wall surface of the quick-change bracket to achieve precise positioning. By making the width of the outward extension of the protective plate 2011113 smaller than the thickness of the guiding and positioning mechanism 8, it is ensured that there is no contact and interference between the protective plate 2011113 and the inner wall surface of the quick-change bracket.

[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, which may affect the locking accuracy of the lock connection structure 7 and helps to extend the service life of the lock connection structure 7.

[0143] Please refer to Figure 21 As shown, a notch 20111131 for the unlocking member to pass through is formed on the protective plate 2011113. The lock connecting rod on the quick-change bracket is connected to a plurality of lock bases and is used to lock the lock shaft 72 on the battery pack 100 in the lock groove of the lock base. By forming the notch 20111131 on the protective plate 2011113, the unlocking member can extend above the protective plate 2011113 through the notch 20111131 and act on the lock connecting rod, and then unlock a plurality of lock shafts 72, so that the plurality of lock shafts 72 can be moved out of the lock groove of the lock base, thereby realizing the disassembly and replacement of the battery pack 100. The notch 20111131 effectively prevents interference of the protective plate 2011113, ensures smooth unlocking, and can ensure the normal implementation of the battery swapping operation of the electric vehicle.

[0144] This embodiment further provides an electric vehicle, which includes the above battery pack 100. By applying the battery pack 100 to the electric vehicle, the battery body can be disposed in the accommodation cavity 14, and the battery body can be protected through the accommodation cavity 14, which improves the service life of the battery body. And the above form can assemble the battery pack 100 into an integral module, which is convenient for subsequent installation of the battery pack 100 in the form of a module. In addition, adopting the above structural form, the temperature regulating member 16 is used to regulate the temperature in the accommodation cavity 14, so that the temperature of the battery body can be changed through the temperature regulating member 16, so that the temperature of the battery body can be maintained within a normal range, which improves the use safety and service life of the battery body and increases the versatility of the battery pack 100.

[0145] Although the specific embodiments of the present invention have been described above, those skilled in the art should understand that this is only for illustration. The protection scope of the present invention is defined by the appended claims. Without departing from the principles and essence of the present invention, those skilled in the art can make various changes or modifications to these embodiments, but these changes and modifications all fall within the protection scope of the present invention.

Claims

1. A battery pack, characterized in that, The battery pack includes a battery body and a battery box body. The battery box body 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 disposed at the top and bottom of the receiving cavity. A temperature regulating member is provided on the upper cover and / or the bottom plate, and the temperature regulating member is used to regulate the temperature in the receiving cavity.

2. The battery pack according to claim 1, characterized in that, The temperature regulating member includes a temperature regulating plate, and a flow channel is formed in the temperature regulating plate for flowing a temperature regulating medium. Connecting pipes are respectively provided at the inlet and outlet of the flow channel. The battery pack further includes a temperature regulating connector, and the temperature regulating connector is communicated with the flow channel through the connecting pipes.

3. The battery pack according to claim 2, wherein The temperature regulating plate includes a plate body and a protection plate. 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 in a direction close to the upper cover or the bottom plate. The protection plate covers at least the recessed area on the plate body to form the closed flow channel. And / or, the flow channel includes a plurality of branches connected in sequence. The branches are at least formed in a first area of the temperature regulating plate, and the shape of the branches is in a shape of a capital "J". 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 along the width direction of the temperature regulating plate. And / or, 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 reach the outlet.

4. The battery pack according to claim 2, characterized in that, One end of the connecting pipe close to the temperature regulating connector is a flexible pipe, and one end of the connecting pipe close to the temperature regulating connector is sleeved on the interface of the temperature regulating connector through the flexible pipe. And / or, a recess is formed on a side of the temperature regulating plate facing away from and / or facing the battery body, and the recess is used to accommodate one end of the connecting pipe close to the battery body. And / or, the temperature regulating connector is connected to at least one outer wall of the battery box body, and the material of the outer wall on which the temperature regulating connector is installed is a profile. And / or, the temperature regulating member further includes a circulation pipeline laid in the flow channel, and the temperature regulating medium circulates in the circulation pipeline. Preferably, the battery box body further includes a mounting seat. A mounting opening is formed on the outer wall on which the temperature regulating connector is installed. 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. More preferably, a through hole for communicating with the inside of the battery box body is formed in a middle area of the mounting seat. A plurality of connecting holes are formed in the mounting seat, and the plurality of connecting holes are distributed on the outer edge of the through hole. The temperature regulating connector is detachably connected to the plurality of connecting holes on the mounting seat and is connected to the battery body after passing through the through hole.

5. The battery pack according to claim 1, characterized in that The battery box body further includes 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 to support the battery body. And / or, the battery box body further includes a buffer member, and the buffer member is disposed between the temperature regulating member and the bottom plate.

6. The battery pack according to claim 1, wherein, The outer wall of the battery box body 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 enclose to form a frame structure. The upper cover and the bottom plate are respectively covered on the top surface and the bottom surface of the frame structure to form the accommodating cavity; the interior of the front beam and / or the rear beam has a cavity.

7. The battery pack according to claim 6, characterized in that, The battery box body further includes a fixing member, the fixing member is located inside the frame structure, and the fixing member is connected to the front beam, the rear beam and the two side walls; Preferably, the battery box body further includes a reinforcing member, and the reinforcing member is disposed at a corresponding position of the frame structure and / or the fixing member on the bottom plate and extends away from the frame structure and / or the fixing member.

8. The battery pack according to claim 6, wherein, The battery pack further 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 structures are disposed between the reinforcing ribs.

9. The battery pack according to claim 8, wherein, The side wall bracket further includes a thickened portion, and the thickened portion is disposed inside the bracket body and corresponds to the reinforcing ribs 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 reduction groove recessed inward, and the first weight reduction groove is disposed between two adjacent reinforcing ribs. One end of the lock connection structure extends into the first weight reduction groove and is connected to the bracket body, and the other end of the lock connection structure exposes the outer wall surface of the bracket body and is used for locking connection with a locking mechanism on the quick-change bracket; and / or, the side wall bracket further includes a protection plate, and one end of the protection plate is connected to the outer side of the bracket body facing away from the battery body, and the other end of the protection plate extends outward in the horizontal direction; Preferably, a plurality of weight reduction cavities are provided inside the bracket body, the thickened portion is disposed inside the weight reduction cavity and is connected to the inner wall of the bracket body close to the reinforcing rib, and the lock connection structure passes through the side wall of the bracket body and is connected inside the thickened portion.

10. An electric vehicle, characterized in that, The electric vehicle includes the battery pack according to any one of claims 1-9.

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