Battery pack housing and battery pack including the housing

Abstract

The present invention provides a battery pack shell and a battery pack including the shell, which relates to the technical field of battery packs, and includes a first layer shell, and a first cover plate used for sealing an open end of the first layer shell, the first cover plate is detachably connected to the first layer shell, a second layer shell component is fixedly provided on the side wall of the first cover plate, a plurality of battery cells are provided in the second layer shell component, the second layer shell component is movably plugged into a third layer shell component, and the third layer shell component is provided on the inner side wall of the first layer shell; when the first layer shell of the present invention is impacted, the impact force or deformation first acts on the second layer shell component and the third layer shell component, so that the impact force or deformation reaching the battery cell can be directly ignored, thereby effectively protecting the battery cell.

Description

Technical Field

[0001] The present invention relates to the technical field of battery packs, and in particular to a battery pack housing and a battery pack comprising the housing. Background Art

[0002] In order to maintain the beautiful appearance of the power-assisted bicycle, the battery packs of power-assisted bicycles on the market are mostly long strips with small cross-sections, and the battery packs are mostly composed of cylindrical cells, and the cells are directly installed in the battery pack shell. Since the existing battery pack shells are all single-layered, when a collision occurs, the battery pack shell is deformed. Since there is no blocking structure in the middle, the deformation force directly acts on the cylindrical cell, causing the cylindrical cell to be damaged and leak. In order to solve the above problems, the present invention proposes a battery pack shell and a battery pack including the shell. Summary of the invention

[0003] To achieve the above-mentioned purpose, the present invention provides a battery pack shell, including a first layer shell, and a first cover plate used to seal the open end of the first layer shell, the first cover plate is detachably connected to the first layer shell, a second layer shell component is fixedly provided on the side wall of the first cover plate, a plurality of battery cells are provided in the second layer shell component, the second layer shell component is movably inserted in a third layer shell component, and the third layer shell component is provided on the inner side wall of the first layer shell.

[0004] Optionally, the third-layer shell assembly includes a first horizontal plate and a second horizontal plate arranged in the vertical direction, and a first vertical plate and a second vertical plate arranged in the horizontal direction and on both sides of the first horizontal plate and the second horizontal plate, the first horizontal plate, the second horizontal plate, the first vertical plate and the second vertical plate form a storage cavity for storing the second-layer shell assembly, wherein a third buffer pad is fixedly arranged on the side of the first vertical plate and the second vertical plate away from each other, the third buffer pad is fixedly arranged on the inner side wall of the first layer of the shell, the upper end and the lower end of the first vertical plate and the second vertical plate are respectively arranged higher than the upper end surface of the first horizontal plate and the lower end surface of the second horizontal plate, so as to be separated from the inner top wall and the inner bottom wall of the first layer of the shell by forming a cavity above the first horizontal plate and below the second horizontal plate.

[0005] Optionally, the third layer shell assembly also includes a fixing assembly for connecting the first horizontal plate and the first vertical plate, the fixing assembly includes a first fixing hole and a second fixing hole which are connected to each other, the first fixing hole and the second fixing hole are both opened on the first vertical plate, a second fixing rod and a first fixing rod are respectively slidably arranged in the first fixing hole and the second fixing hole, the second fixing rod is fixedly connected to the first fixing rod, and the second fixing rod is fixedly connected to the first horizontal plate, wherein the first fixing hole and the second fixing hole, and the first fixing rod and the second fixing rod all form a "T"-shaped structure.

[0006] Optionally, a locking mechanism is further included, which includes a locking groove provided on the first fixed rod, a locking rod movably inserted in the locking groove, one end of the locking rod located outside the locking groove is fixedly connected to a supporting block, the supporting block is movably arranged in the supporting groove, the supporting groove is provided on the first vertical plate, the side wall of the supporting block is fixedly connected to a connecting spring, and the free end of the connecting spring is fixedly connected to the side wall of the supporting groove.

[0007] Optionally, a fourth layer of buffer pads are provided on the sides of the first vertical plate and the second vertical plate that are close to each other, and guide grooves are provided on the upper and lower ends of the fourth layer of buffer pads.

[0008] Optionally, the second-layer shell assembly includes a second-layer shell body, and a second cover plate for sealing the opening of the second-layer shell body, a first-layer buffer pad is arranged on the outer wall of the second-layer shell body, the first-layer buffer pad is slidably arranged in a guide groove, a second-layer buffer pad is fixedly arranged on the upper end surface of the second cover plate and the outer bottom wall of the second-layer shell body, the second-layer buffer pad is in sliding contact with the first horizontal plate and the second horizontal plate, and a plurality of battery storage compartments for storing battery cells and independently arranged are arranged in the second-layer shell body, wherein the battery storage compartments are composed of an outermost elastic material and a metal material inserted into the elastic material.

[0009] Optionally, a plurality of sensors matching the battery storage compartment are provided on the lower end surface of the second cover plate, a circuit connection mechanism is provided on the first horizontal plate, the circuit connection mechanism includes a movable groove opened on the first horizontal plate, a supporting plate movably arranged in the movable groove, an anti-stuck groove is opened on the supporting plate, a first supporting assembly is fixedly connected to the upper end surface of the supporting plate, the upper end of the first supporting assembly is fixedly connected to the top wall of the movable groove, a resistance rod is fixedly connected to the upper end surface of the supporting plate, a first electrode contact is fixedly connected to the upper end of the resistance rod, the first electrode contact is movably arranged in the connecting hole, the connecting hole is arranged on the first horizontal plate, a matching second electrode contact is arranged above the first electrode contact, the second electrode contact is fixedly arranged on the elastic plate, the elastic plate is fixedly arranged on the inner top wall of the sealing cylinder, the sealing cylinder is arranged in the cavity, and the sealing cylinder is fixedly arranged on the upper end surface of the first horizontal plate.

[0010] Optionally, it also includes a heat dissipation mechanism, which includes a first groove opened on the first cover plate, and a second groove opened on the first cover plate and connected to the first groove, and also includes a first heat dissipation hole opened on the first cover plate, the second shell body and the battery storage bin, and a second heat dissipation hole opened on the battery storage bin, wherein the first heat dissipation hole and the second heat dissipation hole are connected, and the second groove is connected to the inner cavity of several battery storage bins through the first heat dissipation hole and the second heat dissipation hole.

[0011] Optionally, the groove cavity of the first groove is a rectangular structure, and the groove cavity of the second groove is a truncated cone structure. The heat dissipation mechanism also includes a sealing plate with a truncated cone structure, and the sealing plate is movably arranged in the first groove and the second groove. The side wall of the sealing plate is fixedly connected to the second support assembly, and the free end of the second support assembly is fixedly connected to the side wall of the second groove.

[0012] To achieve the above object, the present invention further provides a battery pack, comprising the battery pack housing and a battery body installed in the battery pack housing.

[0013] The beneficial effects of the present invention are as follows:

[0014] The present invention adds a second shell component and a third shell component between the battery cell and the first shell component. The second shell component and the third shell component are arranged to form two layers of barriers between the battery cell and the first shell component. In this way, when the first shell is impacted, the impact force or deformation first acts on the second shell component and the third shell component, so that the impact force or deformation reaching the battery cell can be directly ignored, thereby effectively protecting the battery cell. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1It is a schematic structural diagram of an embodiment of a battery pack housing and a battery pack including the housing of the present invention;

[0016] Figure 2 It is a schematic structural diagram of a battery pack housing and a third layer housing assembly in a battery pack including the housing of the present invention;

[0017] Figure 3 The battery pack housing of the present invention and the battery pack including the housing Figure 2 A schematic diagram of the enlarged structure in the middle;

[0018] Figure 4 It is a structural schematic diagram of a battery pack housing and a locking mechanism in a battery pack including the housing of the present invention;

[0019] Figure 5 It is a schematic structural diagram of a battery pack housing and a fourth layer buffer pad of a battery pack including the housing according to the present invention;

[0020] Figure 6 It is a schematic structural diagram of a battery pack housing and a second layer housing assembly in a battery pack including the housing of the present invention;

[0021] Figure 7 The battery pack housing of the present invention and the battery pack including the housing Figure 6 Middle B is an enlarged schematic diagram of the structure;

[0022] Figure 8 A schematic diagram of the structure of the battery pack housing of the present invention and the second cover of the battery pack including the housing viewed from above;

[0023] Fig. 9 It is a schematic cross-sectional structural diagram of a battery pack housing and a third layer housing component in a battery pack including the housing of the present invention;

[0024] Fig.10 The battery pack housing of the present invention and the battery pack including the housing Fig. 9 A magnified schematic diagram of the C structure;

[0025] Fig.11 It is a structural schematic diagram of a battery pack housing and a heat dissipation mechanism in a battery pack including the housing according to the present invention;

[0026] Fig.12 The battery pack housing of the present invention and the battery pack including the housing Fig.11 A magnified schematic diagram of the D structure.

[0027] Reference numerals: first shell 1, first cover plate 2,

[0028] The second shell assembly 3, the second shell body 31, the second cover plate 32, the first buffer pad 33, the second buffer pad 34, the battery storage compartment 35, the positioning column 36, the positioning groove 37,

[0029] The third shell component 4, the first horizontal plate 41, the second horizontal plate 42, the first vertical plate 43, the second vertical plate 44, the third buffer pad 45, the fixing component 46, the first fixing hole 461, the second fixing hole 462, the first fixing rod 463, the second fixing rod 464, the cavity 47,

[0030] Locking mechanism 5, locking groove 51, locking rod 52, supporting block 53, supporting groove 54, connecting spring 55,

[0031] The fourth layer of buffer pad 6, guide groove 61,

[0032] Battery 7,

[0033] Sensor 8,

[0034] Circuit connection mechanism 9, moving groove 91, supporting plate 92, anti-stuck groove 93, first support assembly 94, first support rod 941, first support cylinder 942, first support spring 943, contact rod 95, first electrode contact piece 96, connecting hole 97, second electrode contact piece 98, elastic plate 99, sealing cylinder 910,

[0035] The heat dissipation mechanism 10 , the first slot 101 , the second slot 102 , the first heat dissipation hole 103 , the second heat dissipation hole 104 , the sealing plate 105 , the second support assembly 106 , the second support rod 1061 , the second support cylinder 1062 , and the second support spring 1063 . DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Unless otherwise defined, the technical terms or scientific terms used herein should be understood by people with general skills in the field to which the present invention belongs. "Including" and similar words used in this article mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects.

[0037] In view of the problems existing in the prior art, an embodiment of the present invention provides a battery pack housing, such as Figure 1 and Figure 2As shown, the battery pack shell includes a first layer shell 1, and a first cover plate 2 for sealing the open end of the first layer shell 1, the first cover plate 2 is detachably connected to the first layer shell 1, specifically, the first cover plate 2 and the first layer shell 1 can be fixed by screws; a second layer shell component 3 is fixedly provided on the side wall of the first cover plate 2, a plurality of battery cells 7 are provided in the second layer shell component 3, the second layer shell component 3 is movably inserted in the third layer shell component 4, and the third layer shell component 4 is provided on the inner side wall of the first layer shell 1.

[0038] In this embodiment, the first layer of shell 1 forms the first layer of protection for the battery cell 7, the third layer of shell assembly 4 forms the second layer of protection for the battery cell 7, and the second layer of shell assembly 3 forms the third layer of protection for the battery cell 7. In this way, the three layers of protection can effectively alleviate the impact force or deformation on the battery cell 7, thereby effectively protecting the battery cell 7. In addition, the battery pack shell structure in the present invention is reasonably designed, and the time and labor saving effect can be achieved when the battery cell 7 is installed. Specifically, the battery cell 7 is first loaded into the second layer of shell assembly 3, and then the second layer of shell assembly 3 is pushed to the left and installed into the third layer of shell assembly 4, and then the first layer of shell 1 and the first cover plate 2 are fixed together with screws to complete the assembly of the battery pack.

[0039] In one embodiment, Figure 2 As shown, the third layer shell component 4 includes a first horizontal plate 41 and a second horizontal plate 42 arranged in the vertical direction, and a first vertical plate 43 and a second vertical plate 44 arranged in the horizontal direction and on both sides of the first horizontal plate 41 and the second horizontal plate 42, the first horizontal plate 41, the second horizontal plate 42, the first vertical plate 43 and the second vertical plate 44 form a storage cavity for storing the second layer shell component 3, wherein the first vertical plate 43 and the second vertical plate 44 are fixedly provided with a third buffer pad 45 on the side away from each other, and the third buffer pad 45 is fixedly provided on the inner side wall of the first layer shell 1, and the upper and lower ends of the first vertical plate 43 and the second vertical plate 44 are respectively higher than the upper end surface of the first horizontal plate 41 and the lower end surface of the second horizontal plate 42, so as to be separated from the inner top wall and the inner bottom wall of the first layer shell 1 by forming a cavity 47 above the first horizontal plate 41 and below the second horizontal plate 42.

[0040] The structure of the third layer shell assembly 4 in this embodiment is assembled, so that after one side is damaged, it can be replaced without replacing the entire third layer shell assembly 4, which can achieve the effect of cost saving. In addition, the structure of the third buffer pad 45 is also set in this example. The third buffer pad 45 is made of elastic material, which can directly buffer the impact force or deformation; at the same time, the setting of the cavity 47 directly avoids the contact between the top plate and the bottom plate of the first layer shell 1 and the first horizontal plate 41 and the second horizontal plate 42. In this way, when the impact force or deformation acts on the top plate and the bottom plate of the first layer shell 1, due to the existence of the cavity 47, it will not act on the first horizontal plate 41 and the second horizontal plate 42, thereby providing better protection for the battery cell 7.

[0041] In order to facilitate the installation and disassembly process of the first horizontal plate 41 and the first vertical plate 43, and the second horizontal plate 42 and the second vertical plate 44, in one embodiment, Figure 3 As shown, the third layer shell component 4 also includes a fixing component 46 for connecting the first horizontal plate 41 and the first vertical plate 43, and the fixing component 46 includes a first fixing hole 461 and a second fixing hole 462 which are connected to each other, and the first fixing hole 461 and the second fixing hole 462 are both opened on the first vertical plate 43, and a second fixing rod 464 and a first fixing rod 463 are respectively slidably arranged in the first fixing hole 461 and the second fixing hole 462, and the second fixing rod 464 is fixedly connected to the first horizontal plate 41, wherein the first fixing hole 461 and the second fixing hole 462, and the first fixing rod 463 and the second fixing rod 464 all form a "T"-shaped structure.

[0042] The arrangement of this embodiment adopts riveting to install the first horizontal plate 41 with the first vertical plate 43 and the second vertical plate 44, and the second horizontal plate 42 with the first vertical plate 43 and the second vertical plate 44. This installation method is simple and easy to operate in the installation and disassembly process. During installation, the first fixing rod 463 and the second fixing rod 464 are correspondingly inserted into the second fixing hole 462 and the first fixing hole 461, and then the first horizontal plate 41 or the second horizontal plate 42 is pushed to the left until the first horizontal plate 41 or the second horizontal plate 42 can no longer be pushed and stops. At this time, the installation of the first horizontal plate 41 or the second horizontal plate 42 relative to the first vertical plate 43 and the second vertical plate 44 is completed. In one example, the right ends of the first fixing hole 461 and the second fixing hole 462 are provided with openings for the first fixing rod 463 and the second fixing rod 464 to enter and exit, and the left ends of the first fixing hole 461 and the second fixing hole 462 are provided with openings to form a barrier to the first fixing rod 463 and the second fixing rod 464. When the first fixing rod 463 and the second fixing rod 464 collide with the left ends of the first fixing hole 461 and the second fixing hole 462, the installation of the first horizontal plate 41 or the second horizontal plate 42 relative to the first vertical plate 43 and the second vertical plate 44 is achieved.

[0043] When the first fixing rod 463 and the second fixing rod 464 collide with the left ends of the first fixing hole 461 and the second fixing hole 462, in order to enable the first horizontal plate 41 or the second horizontal plate 42 to be directly locked with the first vertical plate 43 and the second vertical plate 44, in one embodiment, as Figure 4 As shown, the battery pack housing also includes a locking mechanism 5, which includes a locking groove 51 opened on the first fixed rod 463, a locking rod 52 movably inserted in the locking groove 51, and one end of the locking rod 52 located outside the locking groove 51 is fixedly connected to a supporting block 53, and the supporting block 53 is movably arranged in a supporting groove 54, and the supporting groove 54 is opened on the first vertical plate 43, and the side wall of the supporting block 53 is fixedly connected to a connecting spring 55, and the free end of the connecting spring 55 is fixedly connected to the side wall of the supporting groove 54.

[0044] In this embodiment, the locking mechanism 5 is configured to automatically lock the first horizontal plate 41 or the second horizontal plate 42 with the first vertical plate 43 and the second vertical plate 44 when the first fixing rod 463 and the second fixing rod 464 collide with the left ends of the first fixing hole 461 and the second fixing hole 462. During operation, before the first fixing rod 463 and the second fixing rod 464 enter the first fixing hole 461 and the second fixing hole 462, they will collide with the locking rod 52 to move forward, at which time the connecting spring 55 is stretched, and the locking groove 51 and the locking rod 52 are misaligned. When the first fixing rod 463 and the second fixing rod 464 collide with the left ends of the first fixing hole 461 and the second fixing hole 462, the locking groove 51 and the locking rod 52 are arranged opposite to each other. At this time, under the push of the connecting spring 55, the locking rod 52 enters the locking groove 51, and the first horizontal plate 41 or the second horizontal plate 42 can be locked with the first vertical plate 43 and the second vertical plate 44 automatically.

[0045] Of course, in other embodiments, the locking of the first horizontal plate 41 or the second horizontal plate 42 with the first vertical plate 43 and the second vertical plate 44 is not limited to the above-mentioned locking mechanism 5 , for example, fixing screws may also be used.

[0046] In order to better buffer the impact force and deformation, in one embodiment, Figure 5 As shown, the first vertical plate 43 and the second vertical plate 44 are both provided with a fourth layer of buffer pads 6 on the side close to each other, and the upper and lower ends of the fourth layer of buffer pads 6 are both provided with guide grooves 61. The fourth layer of buffer pads 6 are provided to add a buffer layer between the first vertical plate 43 and the second layer of shell assembly 3, and between the second layer of shell assembly 3 and the second vertical plate 44, and the buffer layer can effectively buffer the impact force and deformation.

[0047] In one embodiment, if Figure 6 and Figure 7 As shown, the second-layer shell assembly 3 includes a second-layer shell body 31, and a second cover plate 32 for sealing the opening of the second-layer shell body 31, a first-layer buffer pad 33 is arranged on the outer wall of the second-layer shell body 31, and the first-layer buffer pad 33 is slidably arranged in the guide groove 61, and a second-layer buffer pad 34 is fixedly arranged on the upper end surface of the second cover plate 32 and the outer bottom wall of the second-layer shell body 31, and the second-layer buffer pad 34 is in sliding contact with the first horizontal plate 41 and the second horizontal plate 42, and a plurality of battery storage compartments 35 for storing battery cells 7 and independently arranged are arranged in the second-layer shell body 31, wherein the battery storage compartment 35 is composed of an outermost elastic material and a metal material inserted into the elastic material.

[0048] The setting of the second layer shell assembly 3 in this embodiment can provide more barrier layers for the battery cell 7, thereby playing a better protective role for the battery cell 7. Among them, the independently set battery storage compartment 35 can isolate the battery cell 7 in the adjacent battery cell 7 from the impact of battery liquid leakage or fire, which can play a better protective role; the setting of the first layer buffer pad 33 can add a buffer layer between the second layer shell assembly 3 and the first vertical plate 43, and the second vertical plate 44 and the second layer shell assembly 3. At the same time, the first layer buffer pad 33 is movably inserted in the guide groove 61, so that during installation, the second layer shell assembly 3 and the third layer shell assembly 4 can be installed more accurately through the guidance of the guide groove 61 and the first layer buffer pad 33; the setting of the second layer buffer pad 34 can set a barrier layer between the second cover plate 32 and the first horizontal plate 41, and the bottom plate and the second horizontal plate 42 of the second layer shell body 31. The setting of the first layer buffer pad 33 and the second layer buffer pad 34 in this embodiment can play a better protective role for the battery cell 7.

[0049] In one example, four positioning posts 36 are fixedly disposed on the lower end edge of the second cover plate 32, and four positioning grooves 37 matching the positioning posts 36 are disposed on the upper end surface of the second shell body 31. Figure 7 The arrangement of the combined structure of the positioning column 36 and the positioning groove 37 can make the installation process of the second cover plate 32 and the second shell body 31 more convenient and accurate through the positioning effect.

[0050] After the battery pack is assembled, the state of the battery cell 7 cannot be directly seen. In order to monitor the battery cell 7. Figure 8 ,like Fig. 9 and Fig.10As shown, a plurality of sensors 8 matching the battery storage compartment 35 are arranged on the lower end surface of the second cover plate 32, a circuit connection mechanism 9 is arranged on the first horizontal plate 41, and the circuit connection mechanism 9 includes a movable groove 91 opened on the first horizontal plate 41, a supporting plate 92 is movably arranged in the movable groove 91, an anti-stuck groove 93 is opened on the supporting plate 92, a first supporting assembly 94 is fixedly connected to the upper end surface of the supporting plate 92, the upper end of the first supporting assembly 94 is fixedly connected to the top wall of the movable groove 91, and the upper end surface of the supporting plate 92 is fixed A resistance rod 95 is connected, and the upper end of the resistance rod 95 is fixedly connected to a first electrode contact 96, and the first electrode contact 96 is movably arranged in a connecting hole 97, and the connecting hole 97 is opened on the first horizontal plate 41, and a matching second electrode contact 98 is arranged above the first electrode contact 96, and the second electrode contact 98 is fixedly arranged on an elastic plate 99, and the elastic plate 99 is fixedly arranged on the inner top wall of a sealing tube 910, and the sealing tube 910 is arranged in the cavity 47, and the sealing tube 910 is fixedly arranged on the upper end surface of the first horizontal plate 41.

[0051] In this embodiment, the sensor 8 is set in a one-to-one correspondence with the battery cell 7, so that the battery cell 7 can be monitored in real time through the sensor 8, so that the state of the battery cell 7 can be monitored in real time, and the sensor 8 is electrically connected to the external controller. In this embodiment, the circuit connection mechanism 9 is set to connect the series circuit, and the connection of the series circuit will only work after the battery pack is assembled, so that the sensor 8 and the processor work, which can not only save energy, but also improve the accuracy of monitoring. The sensor 8 only collects the relevant signals of the battery cell 7 after the battery pack is assembled. Specifically, as the second-layer shell component 3 is pushed into the third-layer shell component 4, it will interfere with the anti-stuck groove 93, and then under the guidance of the inclined surface of the anti-stuck groove 93, it will push the support plate 92 to move upward. The upward movement of the support plate 92 will move the first electrode contact piece 96 upward through the interference rod 95. As the first electrode contact piece 96 continues to move upward, it will contact the second electrode contact piece 98. When the second electrode contact piece 98 contacts the first electrode contact piece 96, the series circuit is connected, and the sensor 8 and the processor start working.

[0052] In one embodiment, Fig.10As shown, the first support assembly 94 includes a first support rod 941, a first support tube 942 and a first support spring 943. The first support rod 941 is movably inserted in the first support tube 942. The first support spring 943 is wound outside the first support rod 941, and the two ends of the first support spring 943 are respectively fixedly connected to the side wall of the first support rod 941 and the outer side wall of the first support tube 942. In this example, the setting of the first support assembly 94 can not only play a guiding and supporting role for the movement of the support plate 92, but also provide a reset force for the reset movement of the support plate 92.

[0053] In order to make the battery pack housing have better heat dissipation performance, in one embodiment, Fig.11 and Fig.12 As shown, the battery pack shell also includes a heat dissipation mechanism 10, which includes a first groove 101 opened on the first cover plate 2, and a second groove 102 opened on the first cover plate 2 and connected to the first groove 101, and also includes a first heat dissipation hole 103 opened on the first cover plate 2, the second shell body 31 and the battery storage compartment 35, and a second heat dissipation hole 104 opened on the battery storage compartment 35, wherein the first heat dissipation hole 103 and the second heat dissipation hole 104 are connected, and the second groove 102 is connected to the inner cavity of several battery storage compartments 35 through the first heat dissipation hole 103 and the second heat dissipation hole 104.

[0054] In this example, the arrangement of the combined structure of the first slot 101 , the second slot 102 , the first heat dissipation hole 103 and the second heat dissipation hole 104 enables the battery storage compartment 35 to be connected to the external environment, thereby achieving heat dissipation for the battery cell 7 when working.

[0055] In one embodiment, Fig.12 As shown, the groove cavity of the first groove 101 is a rectangular structure, and the groove cavity of the second groove 102 is a truncated cone structure. The heat dissipation mechanism 10 also includes a sealing plate 105 with a truncated cone structure. The sealing plate 105 is movably arranged in the first groove 101 and the second groove 102. The side wall of the sealing plate 105 is fixedly connected to the second support assembly 106, and the free end of the second support assembly 106 is fixedly connected to the side wall of the second groove 102.

[0056] The sealing plate 105 in this embodiment is arranged to block the second groove 102 and the first heat dissipation hole 103 when the battery cell 7 is not working or the temperature is low in the working state, so as to prevent external dust or other debris from entering the first heat dissipation hole 103, the second heat dissipation hole 104 or the battery storage compartment 35; when the battery cell 7 is working and generates enough heat, the increase in temperature will increase the air pressure, thereby pushing the sealing plate 105 to the right through the first heat dissipation hole 103 and the second groove 102, so that the high-temperature gas in the second groove 102 escapes into the air, thereby achieving a cooling effect.

[0057] In one example, a driver is provided on the sealing plate 105, which can quickly move the sealing plate 105 to the right to achieve a cooling process when the battery storage compartment 35 is abnormally overheated; at the same time, the battery storage compartment 35 can also be connected to a fire extinguishing device, so that when a fire occurs in the battery storage compartment 35, the fire extinguishing device can be controlled to start and extinguish the fire in time. The abnormal overheating signal and the fire signal in the battery storage compartment 35 are collected by the right sensor 8.

[0058] In one example, if Fig.12 As shown, the second support assembly 106 includes a second support rod 1061, a second support tube 1062, and a second support spring 1063. The second support rod 1061 is movably inserted in the second support tube 1062. The second support spring 1063 is wound outside the second support rod 1061, and the two ends of the second support spring 1063 are respectively fixedly connected to the side wall of the second support rod 1061 and the outer side wall of the second support tube 1062. The arrangement of the second support assembly 106 can guide the movement of the sealing plate 105 so that the sealing plate 105 only moves in the horizontal direction, and at the same time, it can provide a reset force for the reset of the sealing plate 105.

[0059] In view of the problems existing in the prior art, an embodiment of the present invention provides a battery pack, characterized in that it includes the battery pack housing and a battery body installed in the battery pack housing.

[0060] Although the embodiments of the present invention are described in detail above, it is obvious to those skilled in the art that various modifications and variations can be made to these embodiments. However, it should be understood that such modifications and variations are within the scope and spirit of the present invention as described in the claims. Moreover, the present invention described herein may have other embodiments and may be implemented or realized in a variety of ways.

Claims

1. A battery pack housing, characterized in that: The invention comprises a first shell (1), and a first cover plate (2) for sealing an open end of the first shell (1), the first cover plate (2) being detachably connected to the first shell (1), a second shell component (3) being fixedly arranged on the side wall of the first cover plate (2), a plurality of battery cells (7) being arranged in the second shell component (3), the second shell component (3) being movably plugged into a third shell component (4), and the third shell component (4) being arranged on the inner side wall of the first shell (1); The third shell assembly (4) comprises a first horizontal plate (41) and a second horizontal plate (42) arranged in a vertical direction, and a first vertical plate (43) and a second vertical plate (44) arranged in a horizontal direction and arranged on both sides of the first horizontal plate (41) and the second horizontal plate (42), wherein the first horizontal plate (41), the second horizontal plate (42), the first vertical plate (43) and the second vertical plate (44) form a storage cavity for storing the second shell assembly (3), wherein the first vertical plate (43) and the second vertical plate (44) A third buffer pad (45) is fixedly arranged on the side away from each other, and the third buffer pad (45) is fixedly arranged on the inner side wall of the first shell (1). The upper end and lower end of the first vertical plate (43) and the second vertical plate (44) are respectively arranged higher than the upper end surface of the first horizontal plate (41) and the lower end surface of the second horizontal plate (42), so as to be separated from the inner top wall and the inner bottom wall of the first shell (1) by forming a cavity (47) above the first horizontal plate (41) and below the second horizontal plate (42); The third layer shell component (4) further comprises a fixing component (46) for connecting the first horizontal plate (41) and the first vertical plate (43), wherein the fixing component (46) comprises a first fixing hole (461) and a second fixing hole (462) which are arranged in communication with each other, wherein the first fixing hole (461) and the second fixing hole (462) are both arranged on the first vertical plate (43), wherein a second fixing rod (464) and a first fixing rod (463) are slidably arranged in the first fixing hole (461) and the second fixing hole (462), respectively, wherein the second fixing rod (464) and the first fixing rod (463) are fixedly connected, and the second fixing rod (464) is fixedly connected to the first horizontal plate (41), wherein the first fixing hole (461) and the second fixing hole (462), and the first fixing rod (463) and the second fixing rod (464) all form a "T"-shaped structure; It also comprises a locking mechanism (5), the locking mechanism (5) comprising a locking groove (51) formed on the first fixing rod (463), a locking rod (52) being movably inserted in the locking groove (51), one end of the locking rod (52) located outside the locking groove (51) being fixedly connected to a supporting block (53), the supporting block (53) being movably arranged in a supporting groove (54), the supporting groove (54) being formed on the first vertical plate (43), a connecting spring (55) being fixedly connected to the side wall of the supporting groove (54), and a free end of the connecting spring (55) being fixedly connected to the side wall of the supporting groove (54); A fourth layer of buffer pads (6) are provided on the sides of the first vertical plate (43) and the second vertical plate (44) that are close to each other, and guide grooves (61) are provided at the upper and lower ends of the fourth layer of buffer pads (6); The second shell assembly (3) comprises a second shell body (31) and a second cover plate (32) for sealing an opening of the second shell body (31); a first buffer pad (33) is arranged on the outer wall of the second shell body (31); the first buffer pad (33) is slidably arranged in a guide groove (61); a second buffer pad (34) is fixedly arranged on the upper end surface of the second cover plate (32) and the outer bottom wall of the second shell body (31); the second buffer pad (34) is in sliding contact with the first horizontal plate (41) and the second horizontal plate (42); a plurality of battery storage compartments (35) for storing battery cells (7) and arranged independently of each other are arranged in the second shell body (31); wherein the battery storage compartment (35) is composed of an outermost elastic material and a metal material inserted into the elastic material; A plurality of sensors (8) matching the battery storage compartment (35) are arranged on the lower end surface of the second cover plate (32); a circuit connection mechanism (9) is arranged on the first horizontal plate (41); the circuit connection mechanism (9) comprises a movable groove (91) provided on the first horizontal plate (41); a support plate (92) is movably arranged in the movable groove (91); an anti-stuck groove (93) is provided on the support plate (92); a first support assembly (94) is fixedly connected to the upper end surface of the support plate (92); the upper end of the first support assembly (94) is fixedly connected to the top wall of the movable groove (91); and the upper end surface of the support plate (92) is fixedly connected to the upper end surface of the support plate (92). A resistance rod (95) is provided, the upper end of the resistance rod (95) is fixedly connected to a first electrode contact piece (96), the first electrode contact piece (96) is movably arranged in a connecting hole (97), the connecting hole (97) is opened on the first horizontal plate (41), a matching second electrode contact piece (98) is arranged above the first electrode contact piece (96), the second electrode contact piece (98) is fixedly arranged on an elastic plate (99), the elastic plate (99) is fixedly arranged on the inner top wall of a sealing cylinder (910), the sealing cylinder (910) is arranged in the cavity (47), and the sealing cylinder (910) is fixedly arranged on the upper end surface of the first horizontal plate (41).

2. The battery pack housing according to claim 1, characterized in that: The invention also comprises a heat dissipation mechanism (10), the heat dissipation mechanism (10) comprising a first slot (101) formed on the first cover plate (2), and a second slot (102) formed on the first cover plate (2) and connected to the first slot (101), and further comprising a first heat dissipation hole (103) formed on the first cover plate (2), the second shell body (31) and the battery storage compartment (35), and a second heat dissipation hole (104) formed on the battery storage compartment (35), wherein the first heat dissipation hole (103) and the second heat dissipation hole (104) are connected, and the second slot (102) is connected to the inner cavity of a plurality of battery storage compartments (35) via the first heat dissipation hole (103) and the second heat dissipation hole (104).

3. The battery pack housing according to claim 2, characterized in that: The groove cavity of the first groove (101) is in a rectangular structure, and the groove cavity of the second groove (102) is in a truncated cone structure. The heat dissipation mechanism (10) further comprises a sealing plate (105) in a truncated cone structure, wherein the sealing plate (105) is movably arranged in the first groove (101) and the second groove (102), and the side wall of the sealing plate (105) is fixedly connected to a second support assembly (106), and the free end of the second support assembly (106) is fixedly connected to the side wall of the second groove (102).

4. A battery pack, characterized in that: The invention comprises a battery pack casing as claimed in any one of claims 1 to 3, and a battery body installed in the battery pack casing.

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