Battery pack

Abstract

The utility model provides a battery pack which comprises a box body which is provided with an accommodating space, an opening side and a bottom side far away from the opening side; the battery pack comprises a plurality of batteries sequentially arranged in the first direction and end plates located at the two ends in the first direction, and the battery pack is arranged in the containing space; the mounting beam is detachably connected with the box body and abuts against the end plate, and the projection of the end plate is located in the projection range of the mounting beam in the first direction; wherein the mounting beam is provided with a mounting inclined plane facing the battery pack, an end plate, opposite to the mounting beam, in the battery pack is provided with a matching inclined plane opposite to the mounting inclined plane, the matching inclined plane is attached to the mounting inclined plane, and the mounting inclined plane inclines towards the direction away from the battery pack in the mounting direction of the mounting beam. The utility model solves the problems in the prior art that the battery is difficult to enter and take out and the mounting beam cannot be replaced.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery technology field, specifically, relate to a battery pack. BACKGROUND

[0002] Battery direct integration technology (namely CTP technology, cell to pack) is a new type of battery integration mode. For CTP products, in the assembly process, the battery is usually arranged into a battery pack, and then the battery pack is placed in the battery pack box, and the mounting beam in the battery pack box abuts against the battery pack to resist the expansion of the battery, wherein the mounting beam can be a crossbeam or a longitudinal beam in the box. Since the mounting beam is usually fixedly connected with the box by welding, and the mounting beam needs to abut against the battery pack, the battery pack needs to be pre-tightened and pressed into the box when it is placed, which causes the problem of difficult placement into the box. When part of the battery fails and needs to be replaced, it is also difficult to take out. In addition, when the mounting beam is deformed due to the expansion of the battery, it cannot be replaced. SUMMARY

[0003] The main purpose of the utility model is to provide a battery pack to solve the problems of difficult placement and removal of the battery and the mounting beam that cannot be replaced in the prior art.

[0004] In order to achieve the above purpose, according to one aspect of the utility model, a battery pack is provided, which comprises: a box body having a containing space, and the box body has an opening side and a bottom side away from the opening side; a battery pack comprising a plurality of batteries arranged in a first direction and end plates located at both ends in the first direction, the battery pack being arranged in the containing space; a mounting beam, which is detachably connected with the box body and abuts against the end plate, and along the first direction, the projection of the end plate is located within the projection range of the mounting beam; wherein the mounting beam has a mounting slope arranged towards the battery pack, and the end plate opposite to the mounting beam in the battery pack has a matching slope opposite to the mounting slope, the matching slope is arranged in close contact with the mounting slope, and along the mounting direction of the mounting beam, the mounting slope is inclined towards the direction away from the battery pack.

[0005] Further, the mounting beam has opposite first and second side surfaces, both of which are mounting slopes, and along the mounting direction of the mounting beam, the mounting slopes on both sides are inclined towards each other.

[0006] Further, along a second direction perpendicular to the first direction, the box body has two opposite first side frames, the first side frame has a first mounting structure, and the opposite two sides of the mounting beam have a second mounting structure, the first mounting structure and the second mounting structure are detachably connected.

[0007] Further, along the third direction, the mounting beam has opposite first and second end portions, the first end portion is located at the opening side, and the first end portion has a protruding section along the second direction, and the protruding section is provided with a second mounting structure; the first side frame is provided with the first mounting structure at one end of the opening side, and the first mounting structure comprises a groove, and the protruding section is accommodated in the groove; wherein the third direction is perpendicular to the first direction and perpendicular to the second direction.

[0008] Further, the protruding section and / or the groove have a guide slope, and the protruding section and the groove are guided and docked through the guide slope.

[0009] Further, the side edge of the protruding section close to the opening side and the side edge of the first side frame close to the opening side are flushly arranged.

[0010] Further, along the second direction, the groove has a side wall away from the accommodation space.

[0011] Further, the first mounting structure and the second mounting structure are clamped or screwed.

[0012] Further, the bottom side has a docking groove, and a part of the mounting beam is located in the docking groove.

[0013] Further, the mounting beam and the bottom side both have mounting holes, the mounting holes on the mounting beam are arranged through the mounting beam along the mounting direction of the mounting beam, and the battery pack further comprises a fastener, the fastener is arranged in the mounting hole and detachably connects the mounting beam and the box body.

[0014] The utility model discloses a technical scheme, through being provided with mounting beam, mounting beam can insert containing space and with the end plate of battery pack abut, to fill the gap of battery pack outside, make under the effect of mounting beam, the close contact cooperation between battery pack and / or between battery pack and the inner wall of box body. BRIEF DESCRIPTION OF DRAWINGS

[0015] The accompanying drawings, which form a part of this specification, are included to provide a further understanding of the present application and are incorporated herein by reference. The present application may

[0016] Figure 1 A battery pack assembly diagram of the utility model is shown.

[0017] Figure 2 A structure schematic diagram of the box in Figure 1 is shown.

[0018] Figure 3 A structure schematic diagram of the mounting beam in Figure 1 is shown.

[0019] Figure 4 A structure schematic diagram of the mounting beam and the box opening side cooperation in Figure 1 is shown.

[0020] Figure 5 a structure diagram showing the cooperation between the mounting beam and the butt joint groove of the bottom side of the box in the battery pack of Figure 1

[0021] Figure 6 a structure diagram showing the cooperation between the mounting beam and the butt joint groove of the bottom side of the box in the battery pack of Figure 1

[0022] Figure 7 a structure diagram showing the cooperation between the mounting beam and the butt joint groove of the bottom side of the box in the battery pack of Figure 1

[0023] Wherein, the above-mentioned drawings include the following reference signs:

[0024] 10, box; 11, butt joint groove; 12, first mounting structure; 13, groove; 14, first side frame; 20, battery pack; 30, mounting beam; 31, mounting slope; 32, second mounting structure; 33, guide slope; 34, mounting hole; 40, end plate; 41, cooperation slope. DETAILED DESCRIPTION

[0025] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0026] It should be noted that, unless otherwise specified, all technical and scientific terms used in the present application have the same meaning as that generally understood by the ordinary skilled person in the technical field to which the present application belongs.

[0027] In the present application, unless otherwise specified, the orientation words such as "upper, lower, top, bottom" are generally directed to the direction shown in the drawings, or are directed to the vertical, perpendicular or gravity direction of the components themselves. Similarly, for the convenience of understanding and description, "inner, outer" refers to the inner and outer relative to the contour of each component itself, but the above-mentioned orientation words are not used to limit the present application.

[0028] In order to solve the problem that the existing CTP product has difficulty in putting and taking out the battery and the mounting beam cannot be replaced, the present application provides a battery pack.

[0029] As Figures 1 to 7 ​​​The battery pack shown comprises a box body 10, a battery pack 20 and a mounting beam 30. The box body 10 has a containing space, and the box body 10 has an opening side and a bottom side away from the opening side. The battery pack 20 comprises a plurality of batteries arranged in sequence along a first direction and end plates 40 located at both ends along the first direction. The battery pack 20 is arranged in the containing space. The mounting beam 30 is detachably connected with the box body 10 and abuts against the end plates 40. Along the first direction, the projection of the end plates 40 is located in the projection range of the mounting beam 30. The mounting beam 30 has a mounting slope 31 arranged towards the battery pack 20. The end plate 40 opposite to the mounting beam 30 in the battery pack 20 has a matching slope 41 opposite to the mounting slope 31. The matching slope 41 is arranged in abutment with the mounting slope 31. Along the mounting direction of the mounting beam 30, the mounting slope 31 is inclined away from the battery pack 20.

[0030] The battery pack of the embodiment is provided with the mounting beam 30. The mounting beam 30 can be inserted into the containing space and abut against the end plates 40 of the battery pack 20 to fill the gap outside the battery pack 20, so that the battery packs are tightly contacted and matched under the action of the mounting beam 30. Specifically, the mounting beam 30 is detachably arranged on the box body 10. Thus, the mounting beam 30 is first placed into the battery pack 20 in the uninstalled state, and gaps can be left between the battery packs 20 and between the battery pack 20 and the inner wall of the box body 10, so that the installation and adjustment of the battery pack 20 are facilitated. After the installation and adjustment of the battery pack 20 are completed, the mounting beam 30 is installed into the containing space. At this time, the mounting slope 31 of the mounting beam 30 extrudes the matching slope 41 on the end plate 40. The mounting beam 30 extrudes the matching slope 41 to gradually make the battery packs and / or the battery pack and the inner wall of the box body tightly abut. Meanwhile, the embodiment takes into account the extrusion force of the mounting beam 30 on the battery pack 20 and adopts the mode that the projection of the end plate 40 is located in the projection range of the mounting beam 30. The mounting beam 30 uniformly extrudes the whole surface of the end plate 40 in the inclined direction of the mounting slope 31, so that the extrusion force of the mounting beam 30 on the battery pack 20 is relatively uniform during the installation process. After the installation is completed, the force of the mounting beam 30 on the battery pack 20 is also relatively uniform during the use of the battery pack, and the problem of force concentration caused by only partial contact is avoided. The above setting mode facilitates the installation of the battery pack 20 into the box body 10 through the setting of the mounting beam 30, avoids the installation difficulty existing in the traditional installation mode, and facilitates the quick disassembly of the battery or the mounting beam when maintenance or replacement is needed, greatly reduces the maintenance cost and time, improves the maintainability of the battery pack, and simultaneously ensures the stability of the position of the battery after the installation is completed and the uniform extrusion force of the mounting beam 30 on the battery pack 20, thereby ensuring the stability of the overall structure of the battery pack and improving the safety and service life of the battery.

[0031] It should be noted that since the installation beam 30 leaves a gap between the battery packs and between the battery packs and the box 10 in the uninstalled state, the accommodating space of the box 10 is substantially larger than the size of the battery as a whole, thereby achieving the effect that the battery is conveniently installed into the box 10.

[0032] As shown in Figure 6 and Figure 7 , the present embodiment is described by taking the example that the installation beam 30 is inserted between the battery packs 20, at this time, the opposite two side surfaces of the installation beam 30 are respectively in abutting cooperation with the two battery packs 20. In this way, the installation beam 30 can simultaneously realize the extrusion of the two battery packs 20. Of course, the installation beam 30 can also be inserted between the battery pack 20 and the box 10, at this time, the opposite two side surfaces of the installation beam 30 are respectively in abutting cooperation with the end plate 40 of the battery pack 20 and the inner wall of the box 10.

[0033] The present embodiment takes the arrangement direction of each battery of a single battery pack 20 as the first direction, i.e. the left-right direction in Figure 7 , the direction perpendicular to the first direction and parallel to the opening side of the box 10 as the second direction, i.e. the front-rear direction in Figure 7 , and the direction perpendicular to both the first direction and the second direction as the third direction, i.e. the up-down direction in Figure 7 . The installation direction of the installation beam 30 inserted between the battery packs 20 is the direction from up to down along the third direction.

[0034] As shown in Figure 3 and Figure 7 , in the present embodiment, the installation beam 30 has opposite first and second side surfaces, the first and / or second side surfaces are installation inclined surfaces 31, and along the installation direction of the installation beam 30, the distance between the first and second side surfaces gradually decreases, i.e. the cross section of the installation beam 30 gradually narrows from wide to narrow along the installation direction. In this way, when the installation beam 30 is inserted between the two battery packs 20, since the distance between the first and second side surfaces decreases, the installation beam 30 can continuously extrude the batteries during the insertion process, so that the batteries on both sides move away from each other, and then the batteries on both sides of the installation beam 30 can be continuously pressed, thereby realizing the close cooperation between the batteries and between the batteries and the box 10. The above-mentioned arrangement simplifies the installation process through the design of the installation inclined surface 31, so that the battery and the box 10 can be quickly fixed without additional tools, thereby significantly improving the production efficiency. On the other hand, the design of the installation beam 30 which is narrow at the bottom and wide at the top makes it easy to disassemble when the battery needs to be maintained or replaced, without damaging the box 10 or the battery, thereby improving the maintenance efficiency.

[0035] As shown in Figure 3As shown, in this embodiment, since the mounting beam 30 is inserted between the two battery packs 20, both the first and second sides are mounting ramps 31. Along the installation direction of the mounting beam 30, the mounting ramps 31 on both sides incline towards each other, meaning the first and second sides of the mounting beam 30 simultaneously approach and narrow, resulting in a tapered cross-section of the mounting beam 30. Thus, during installation, the mounting beam 30 is pushed between the battery and the housing 10 along the set installation direction. As the mounting beam 30 penetrates deeper, the mounting ramps 31 on the first and second sides simultaneously gradually move towards the end plates 40 of the battery packs 20 on both sides until they reach the preset position, forming a stable fixing effect. On the one hand, the design of the double mounting ramps 31 allows the mounting beam 30 to simultaneously compress the side surfaces of the end plates 40 of the two battery packs 20, improving installation efficiency. On the other hand, the design of the double mounting ramps 31 of the mounting beam 30 tilting towards each other makes the mounting beam 30 smaller in volume compared to the design of a single mounting ramp 31, reducing the production material cost of the mounting beam 30, while also reducing the space occupied by the mounting beam 30, and improving the overall energy density and space utilization of the battery pack.

[0036] like Figure 1 and Figure 2 As shown, in this embodiment, the top of the housing 10 has an open side. Both the battery pack 20 and the mounting beam 30 are installed into the accommodating space from top to bottom from the open side. Therefore, the installation direction of the mounting beam 30 is also from top to bottom. Since the mounting beam 30 in this embodiment is a plate-like component with a certain thickness, its thickness direction is the arrangement direction of the battery pack 20. The inclination directions of the mounting ramps 31 on both sides of the mounting beam 30 are opposite, thus inclining from top to bottom towards each other, resulting in a structure where the thickness of the mounting beam 30 gradually decreases from top to bottom. Of course, in addition to the above structure, the mounting beam 30 can also be configured with one side being a mounting ramp 31 and the other side being a vertical surface, still maintaining the overall form of the mounting beam 30 decreasing in thickness from top to bottom. Furthermore, when the mounting beam 30 is configured with one side being a mounting ramp 31, the mounting beam 30 can also be inserted between the battery packs 20. In this case, the end plate 40 opposite to the vertical surface of the mounting beam 30 is also correspondingly configured as a vertical surface.

[0037] like Figures 2 to 4As shown, in the embodiment, along a second direction perpendicular to the first direction, the box 10 has two opposite first side frames 14, the first side frame 14 is provided with the first mounting structure 12, the opposite sides of the mounting beam 30 are provided with the second mounting structure 32, and the first mounting structure 12 and the second mounting structure 32 are detachably connected. Through the abutting connection of the first mounting structure 12 and the second mounting structure 32, the mounting beam 30 can be quickly and accurately mounted on the box 10, greatly improving the production efficiency of the battery pack. On the other hand, the design of the first mounting structure 12 and the second mounting structure 32 not only considers the stability of the connection, but also facilitates the smooth removal of the mounting beam 30 from the box 10 when the mounting beam 30 needs to be replaced, and takes into account the need for convenient disassembly.

[0038] As shown in the drawings, Figures 1 to 4 The first mounting structure 12 of the embodiment is provided with two first mounting structures 12, and the opposite two first side frames 14 are provided with the first mounting structure 12, and the two first mounting structures 12 are located at the positions close to the middle of the two first side frames 14 in the length direction of the two first side frames 14. Correspondingly, the second mounting structure 32 is also provided with two, and is respectively located at one side of the wider end of the cross section of the mounting beam 30, that is, at both ends of the length direction of the top end side of the mounting beam 30, and the two ends can be extended horizontally for a distance to form the second mounting structure 32. The distance between the two second mounting structures 32 on both sides is equal to the distance between the two first mounting structures 12, so that the first mounting structure 12 and the second mounting structure 32 form a one-to-one corresponding matching relationship, and the mounting beam 30 is exactly installed on the first side frame 14 of the opening side of the box 10.

[0039] Optionally, the first mounting structure 12 can be a clamping, magnetic attraction, screwing or any other structure that can be connected with the mounting beam 30. The second mounting structure 32 is designed on the mounting beam 30 and matched with the first mounting structure 12 of the box 10. When the mounting beam 30 needs to be removed, only the reverse operation such as pulling the buckle or rotating the screw is needed, so that the first mounting structure 12 and the second mounting structure 32 are separated, and the mounting beam 30 is disassembled. The specific form of the second mounting structure 32 should match the first mounting structure 12, for example, if the first mounting structure 12 is a groove, then the second mounting structure 32 should also be designed as a matching protrusion.

[0040] As shown in the drawings, Figures 1 to 4 In the embodiment, along the third direction, the mounting beam 30 has opposite first and second end portions, that is, the top end side of the mounting beam 30 is the first end portion, and the bottom end side is the second end portion. When the mounting beam 30 is installed, the first end portion is located at the opening side of the top portion, and the second end portion extends downward along the bottom direction of the box 10 to the bottom of the box 10. At this time, the first end portion of the mounting beam 30 is exactly located at the opening side of the box 10.

[0041] The first end portion of the embodiment is designed with an extension section in the second direction on the first end portion, which is arranged to provide a platform for docking with the first mounting structure 12 of the box 10. The length and shape of the extension section are designed according to the specific size and shape of the opening side of the box 10, so that the second mounting structure 32 formed by the lateral extension of the first end portion is in contact with the first mounting structure 12 arranged on the box 10. In this way, the design of the first end portion at the opening side makes the mounting beam 30 in abutting contact with the bottom surface and the opening side plane of the box 10, improving the stability of the mounting beam 30 assembly. The lateral extension of the first end portion to form the second mounting structure 32, i.e. the integral design of the second mounting structure 32 with the mounting beam 30, eliminates the need for additional fixing components to connect the second mounting structure 32 with the mounting beam 30, simplifying the process flow and reducing production costs.

[0042] The first mounting structure 12 of the embodiment includes a groove 13 arranged at the inner side of the top end of the first side frame 14 of the box 10, and the top surface and side surface of the groove 13 are open. Correspondingly, the extension section is provided with a protrusion that is arranged to match the shape of the groove 13. In this way, during installation, the extension section can be accommodated in the groove 13, so that the extension section does not protrude above the top surface of the box 10, thereby saving the height space of the battery pack. It should be noted that since the extension section of the embodiment is only provided with the second mounting structure 32, substantially all parts of the extension section can be used as the second mounting structure 32. Of course, in addition to the second mounting structure 32, other segments can also be added as other matching structures, etc. according to needs.

[0043] The embodiment is provided with a connecting hole on the bottom surface of the groove 13, and correspondingly, a connecting hole is also arranged on the protrusion. The connecting hole on the protrusion corresponds to the connecting hole on the bottom surface of the groove 13, and a fastener is also arranged. The fastener can be a bolt structure. When the mounting beam 30 is installed from top to bottom, the protrusion is installed into the groove 13 from top to bottom, and the connecting holes of the two are aligned with each other. The fastener can be inserted into the connecting holes of the two, and the effect of connecting and fastening the protrusion and the groove 13 together is achieved through the thread.

[0044] As Figure 4As shown, in the present embodiment, the protruding section and / or the groove 13 has a guide slope 33, and the protruding section and the groove 13 are guided to butt joint through the guide slope 33. Specifically, the protruding section and the groove 13 are both provided with the guide slope 33 at the butt joint, and the inclination angle and position of the guide slope 33 are accurately calculated to ensure that the installation beam 30 can be automatically aligned with the first mounting structure 12 in the process of installing the installation beam 30 to the opening side of the box body 10. That is, the longitudinal side of the protruding section and the groove 13 is provided as an inclined guide slope 33, and the corresponding guide slopes 33 are arranged in parallel. In this way, in the process of installing the installation beam 30 to the box body 10, the guide slopes 33 of the protruding section and the groove 13 first contact, and through the guiding action of the guide slope 33, even in the case of not complete alignment, the protruding section can automatically adjust the position along the guide slope 33 and in the direction of the guide slope 33 until the protruding section is completely butt jointed with the groove 13 and the protruding section is completely inserted into the groove 13. After installation, the structural design of the guide slope 33 also ensures the stable connection between the installation beam 30 and the box body 10, reducing the risk of falling due to vibration or external force. On the one hand, the arrangement of the guide slope 33 significantly reduces the alignment difficulty in the installation process and improves the installation efficiency; on the other hand, it also ensures the reliable connection between the installation beam 30 and the box body 10, reduces the defective rate caused by human error, and at the same time, the guide slope 33 can also play a guiding role when maintaining or replacing the installation beam 30, making the disassembly and reinstallation process simpler and faster, reducing the disassembly and assembly time, and improving the maintainability of the overall battery pack.

[0045] In the present embodiment, the side edge of the protruding section close to the opening side is flush with the side edge of the first side frame 14 close to the opening side. That is, after the installation beam 30 is installed, the top side of the protruding section is flush with the top side of the first side frame 14, thereby ensuring the sealing performance when the box body 10 is connected with the cover of the battery pack.

[0046] Similarly, in order to ensure the sealing performance of the box body 10, the groove 13 of the present embodiment is only provided with a top surface and an inner side surface facing the accommodation space, and the outer side surface away from the accommodation space is a solid part which is not connected to the outside. That is, the groove 13 is not provided in the thickness direction of the first side frame 14, and the groove 13 has a side wall away from the accommodation space, so that after the cover is installed, the cover covers and seals the groove 13, avoiding the leakage of the accommodation space to the outside at the groove 13, which is conducive to ensuring the good sealing performance of the overall battery pack.

[0047] As Figure 2 and Figure 5As shown, in this embodiment, the bottom side of the box body 10 is the bottom surface of the accommodating cavity, and the bottom side has a docking groove 11, and a portion of the mounting beam 30 is located in the docking groove 11 when the mounting beam 30 is installed. Specifically, the position, shape and size of the docking groove 11 are designed according to the mounting position of the mounting beam 30 and the shape and size of the second end portion, so as to match the specific structure of the mounting beam 30, so that the second end portion of the mounting beam 30 gradually approaches and guides along the docking groove 11 during installation, and easily enters the docking groove 11, thereby forming a positioning and limiting fit between the mounting beam 30 and the docking groove 11, realizing the docking and fixing of the mounting beam 30 and the box body 10. In this way, after the installation of the mounting beam 30 is completed, at least a portion of the mounting beam 30 can be embedded in the structural bottom of the docking groove 11. On the one hand, through the design of the docking groove 11, a portion of the mounting beam 30 is fixed in the groove, which enhances the connection strength between the mounting beam 30 and the box body 10, effectively prevents the displacement and vibration of the battery pack 20, and further improves the stability and safety of the battery pack. On the other hand, the specific structure of the docking groove 11 and the mounting beam 30 cooperates with each other, so that the mounting beam 30 can easily slide into or out of the guide groove, which also simplifies the installation and disassembly process, improves the production efficiency and maintenance convenience.

[0048] As shown in Figure 3 and Figure 5 shown, in this embodiment, the mounting beam 30 and the docking groove 11 of the bottom side of the box body 10 both have mounting holes 34, the mounting holes 34 on the mounting beam 30 are arranged from top to bottom through the mounting beam 30, and the battery pack further includes fasteners, which are arranged in the mounting holes 34 and detachably connect the mounting beam 30 and the box body 10. Specifically, the mounting beam 30 is provided with a plurality of mounting holes 34 penetrating in the mounting direction thereof, that is, the mounting holes 34 penetrate the height direction of the mounting beam 30, and the plurality of mounting holes 34 are uniformly arranged along the transverse length direction of the mounting beam 30, and the bottom side of the box body 10 is also correspondingly designed with the mounting holes 34 as blind holes. The fastener can be a bolt or the like, and the size and type of the fastener should match the specification of the mounting hole 34 to ensure that it can be smoothly arranged in the mounting hole 34 and provide sufficient fastening force. During the connection process, a portion of the second end portion of the mounting beam 30 is arranged in the docking groove 11 of the bottom side of the box body 10 when the mounting beam 30 is docked and fixed with the bottom side, so as to ensure that the mounting beam 30 is aligned with the bottom side. Then, the fastener is arranged in the mounting holes 34 of the mounting beam 30 and the bottom side, and the mounting beam 30 and the box body 10 are stably connected through the tightening or insertion of the fastener. In this way, on the one hand, the use of the fastener not only ensures the connection strength, but also allows the mounting beam 30 to be easily detached when needed, which facilitates the maintenance and replacement of the battery pack 20 and ensures high flexibility. On the other hand, the design of the mounting hole 34 avoids the use of welding or bonding and other connection methods that may cause irreversible damage to the battery pack 20 or the box body 10, thereby ensuring the long-term use performance of the battery pack.

[0049] Optionally, in order to ensure that the mounting beam 30 and the mounting hole 34 on the bottom side of the box body 10 can be accurately aligned, a guide structure can be designed around the mounting hole 34 on the mounting beam 30, for example, a slight enlargement of the hole diameter, chamfering of the hole periphery, or visual marking of the hole position, etc., to reduce the difficulty of alignment during installation and improve production efficiency.

[0050] It should be noted that the first mounting structure 12 and the second mounting structure 32 can realize the mounting connection between the mounting beam 30 and the box body 10, and the mounting hole 34 can also realize the mounting connection between the mounting beam 30 and the box body 10, and the functions of the two are basically the same, so in actual setting, only one of the above two ways can be set, or both ways can be set. In order to ensure the fastening reliability of the connection of the mounting beam 30, the two ways are set at the same time in the embodiment.

[0051] As shown in Figure 1 , Figure 6 and Figure 7 , the reason why the mounting beam 30 of the embodiment directly abuts against the end plate 40 without directly abutting against the battery is that the mounting beam 30 of the embodiment is made of a metal piece considering the structural strength, but the metal piece has conductivity, and if the metal piece directly contacts the battery, the situation of electric leakage is likely to occur, resulting in safety risks. Therefore, in the embodiment, the component directly contacted and abutted by the mounting beam 30 is set as the end plate 40, and the end plate 40 is a plastic end plate, so that the insulation of the end plate 40 separates the mounting beam 30 from the battery, thereby ensuring the safety of the battery pack. At the same time, since the batteries are divided into different battery groups 20, it is convenient to pre-integrate the battery groups 20 together and then uniformly install them into the box body 10, thereby facilitating assembly.

[0052] Optionally, the material of the mounting beam 30 can be a material with good heat conductivity, such as aluminum or copper, which can not only ensure the structural strength but also enhance the heat conduction inside the battery group 20, thereby helping the battery to dissipate heat. Similarly, the material of the end plate 40 needs to have sufficient strength to support the entire battery group 20, and also has certain buffering and vibration absorption performance.

[0053] It should be noted that the plurality of in the above embodiment means at least two.

[0054] From the above description, it can be seen that the above-mentioned embodiments of the utility model realize the following technical effects:

[0055] 1. The installation of the battery into the box body is facilitated by the installation of the installation slope of the mounting beam, avoiding the installation difficulty existing in the traditional installation mode, and significantly improving the production efficiency.

[0056] 2. The detachable design of the mounting beam enables the battery or the mounting beam to be quickly disassembled when maintenance or replacement is needed, greatly reducing the maintenance cost and time, and improving the maintainability of the battery pack.

[0057] 3. The extrusion force of the mounting beam applied to the battery pack during installation is relatively uniform, and the force of the mounting beam on the battery pack during use of the battery pack after installation is completed is also relatively uniform, avoiding the problem of force concentration caused by partial contact.

[0058] Obviously, the above-described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor should belong to the scope of protection of the present application.

[0059] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and / or "comprising," when used in this specification, specify the presence of stated features, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or groups thereof.

[0060] It should be noted that the terms "first", "second", and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the use of these terms herein is merely for distinguishing between the elements being described and not necessarily for describing a particular sequential or chronological order.

[0061] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A battery pack, characterized by, The application relates to a battery pack, comprising: a box (10) having a containing space, wherein the box (10) has an opening side and a bottom side away from the opening side; a battery pack (20) comprising a plurality of batteries arranged in sequence along a first direction and end plates (40) located at both ends along the first direction, wherein the battery pack (20) is arranged in the containing space; a mounting beam (30) detachably connected with the box (10) and abutting against the end plates (40), and along the first direction, a projection of the end plates (40) is located in a projection range of the mounting beam (30); wherein the mounting beam (30) has a mounting slope (31) arranged towards the battery pack (20), and the end plate (40) opposite to the mounting beam (30) in the battery pack (20) has a matching slope (41) opposite to the mounting slope (31), the matching slope (41) is arranged in close contact with the mounting slope (31), and along the mounting direction of the mounting beam (30), the mounting slope (31) is inclined towards a direction away from the battery pack (20).

2. The battery pack of claim 1, wherein, The mounting beam (30) has opposite first and second side faces, both of which are the mounting slope (31), and along the mounting direction of the mounting beam (30), the mounting slopes (31) on both sides are inclined towards each other.

3. The battery pack of claim 1, wherein, Along a second direction perpendicular to the first direction, the box (10) has opposite two first side frames (14), the first side frames (14) have first mounting structures (12) thereon, opposite sides of the mounting beam (30) have second mounting structures (32), and the first mounting structures (12) and the second mounting structures (32) are detachably connected.

4. The battery pack of claim 3, wherein, Along a third direction, the mounting beam (30) has opposite first and second end portions, the first end portion is located at the opening side, and the first end portion has a protruding segment along the second direction, the protruding segment is provided with the second mounting structure (32); the first side frame (14) is provided with the first mounting structure (12) at one end of the opening side, the first mounting structure (12) comprises a groove (13), and the protruding segment is accommodated in the groove (13); wherein the third direction is perpendicular to the first direction and perpendicular to the second direction.

5. The battery pack of claim 4, wherein, The protruding segment and / or the groove (13) have a guide slope (33), and the protruding segment and the groove (13) are guided and docked through the guide slope (33).

6. The battery pack of claim 4, wherein, The side edge of the protruding segment close to the opening side and the side edge of the first side frame (14) close to the opening side are arranged in flush.

7. The battery pack of claim 4, wherein, Along the second direction, the groove (13) has a side wall away from the containing space.

8. The battery pack of claim 3, wherein, The first mounting structure (12) and the second mounting structure (32) are clamped or screwed.

9. The battery pack of claim 1, wherein, The bottom side has a docking groove (11), and a part of the mounting beam (30) is located in the docking groove (11).

10. The battery pack of claim 9, wherein, The mounting beam (30) and the bottom side each have a mounting hole (34), the mounting hole (34) on the mounting beam (30) is arranged through the mounting beam (30) in the mounting direction of the mounting beam (30), and the battery pack further comprises a fastener, the fastener is threaded in the mounting hole (34) and detachably connects the mounting beam (30) and the box body (10).

Images