Battery pack

Abstract

The utility model relates to a battery pack, and relates to the technical field of batteries, the battery pack comprises a mounting rack, a plurality of batteries and an exhaust valve, the mounting rack is provided with a plurality of through exhaust holes; a plurality of batteries are arranged on the mounting rack, one end of each battery is provided with a first anti-explosion valve, and the first anti-explosion valves are arranged corresponding to the exhaust holes; the exhaust valve is connected with the bottom wall of the mounting frame, the exhaust valve is provided with an exhaust channel extending in the preset direction, the exhaust channel communicates with the exhaust hole, and the exhaust valve is used for increasing the flow speed of fluid exhausted in the preset direction or reducing the flow speed of fluid flowing in the direction opposite to the preset direction. According to the battery pack, the gas emission rate can be increased, the gas is guided to be exhausted in the preset direction, and the overall gas emission efficiency is improved.

Description

Technical Field

[0001] This application relates to the technical field of batteries, and particularly to a battery pack. Background Art

[0002] When the battery in the battery pack undergoes thermal runaway, high-temperature and high-pressure fluid will be generated. If not handled in time, it will cause the temperature and pressure inside the battery pack to rise, leading to safety accidents. In related technologies, only the explosion-proof valve on the battery pack is used to discharge gas, and the discharge rate is slow, and the discharge has no directionality, so the overall gas discharge efficiency is low. Summary of the Utility Model

[0003] To solve the above technical problems, an embodiment of this application provides a battery pack, which can improve the gas discharge rate and guide the gas to be discharged along a preset direction, thereby improving the overall gas discharge efficiency.

[0004] In a first aspect, a battery pack is provided, including:

[0005] A mounting rack provided with a plurality of through exhaust holes;

[0006] A plurality of batteries are arranged on the mounting rack, and a first explosion-proof valve is arranged at one end of the battery, and the first explosion-proof valve is arranged corresponding to the exhaust hole;

[0007] An exhaust valve is connected to the bottom wall of the mounting rack. The exhaust valve is provided with an exhaust passage extending along a preset direction, and the exhaust passage is communicated with the exhaust hole. The exhaust valve is used to increase the flow rate of the fluid discharged along the preset direction or reduce the flow rate of the fluid flowing in along the direction opposite to the preset direction.

[0008] According to the first aspect of this application, the exhaust valve is a Tesla valve.

[0009] According to the first aspect of this application, the exhaust valve includes:

[0010] A valve body provided with the exhaust passage, and at least one end of the exhaust passage penetrates the side wall of the valve body;

[0011] A plurality of guiding plates are symmetrically arranged on both sides of the exhaust passage and are spaced apart along the preset direction. The plurality of guiding plates are arranged in parallel, and the plurality of guiding plates are all inclined relative to the preset direction;

[0012] A plurality of partition plates are arranged between adjacent two of the guiding plates along the preset direction. The plurality of partition plates are arranged in parallel, and the plurality of partition plates are all inclined relative to the preset direction;

[0013] Wherein, the inclination directions of the plurality of guiding plates are the same as the inclination directions of the plurality of partition plates.

[0014] According to the first aspect of the present application, the inclination angles of the plurality of partition plates are the same as those of the plurality of guiding plates.

[0015] According to the first aspect of the present application, the number of the exhaust valves is plural, the plurality of batteries are divided into multiple groups, and each group of batteries includes a plurality of the batteries;

[0016] The plurality of exhaust valves are arranged at intervals on the bottom wall of the mounting rack along a direction perpendicular to the preset direction. Different exhaust valves correspond to different groups of batteries, and the exhaust holes correspondingly assembled by the plurality of batteries in the same group are all communicated with the exhaust valves.

[0017] According to the first aspect of the present application, the battery pack further includes:

[0018] A sealing body, protruding from the bottom wall of the mounting rack, and the sealing body is abutted between any two adjacent exhaust valves;

[0019] One end of the mounting rack is provided with a blocking body, the blocking body connects two adjacent sealing bodies, and the blocking body is used to abut one end of the exhaust valve in the preset direction to seal the exhaust passage.

[0020] According to the first aspect of the present application, the mounting rack is provided with one of a protrusion and a groove, and the side wall of the exhaust valve is provided with the other of the protrusion and the groove. The protrusion is in sliding fit with the groove, wherein the groove is a dovetail groove.

[0021] According to the first aspect of the present application, a receiving groove is recessed in a first side wall of the mounting rack along the preset direction, and the receiving groove is communicated with the exhaust passage.

[0022] According to the first aspect of the present application, the battery pack further includes:

[0023] A housing, covering the outside of the mounting rack, the housing has a second side wall, and the second side wall is used for sealing connection with the first side wall to close the receiving groove;

[0024] A second explosion-proof valve, arranged on the second side wall, and the second explosion-proof valve is communicated with the receiving groove.

[0025] According to the first aspect of the present application, the mounting rack is further provided with a penetrating transition valve, the transition valve is arranged between the exhaust hole and the exhaust valve, the transition valve is provided with a transition passage, the transition passage communicates the exhaust hole and the exhaust passage, and the transition valve is used to increase the flow rate of the fluid in the direction from the exhaust hole to the exhaust passage, or reduce the flow rate of the fluid in the direction from the exhaust passage to the exhaust hole.

[0026] The battery pack provided by the embodiment of the present application includes a mounting rack, a plurality of batteries, and an exhaust valve. The mounting rack is provided with a plurality of through exhaust holes; the plurality of batteries are arranged on the mounting rack, and a first explosion-proof valve is arranged at one end of the battery, and the first explosion-proof valve is arranged corresponding to the exhaust hole; the exhaust valve is connected to the bottom wall of the mounting rack, and the exhaust valve is provided with an exhaust channel extending along a preset direction, and the exhaust channel is communicated with the exhaust hole; it can improve the flow rate of the fluid discharged along the preset direction through the exhaust valve. That is to say, after the fluid enters the exhaust channel from the exhaust hole, under the auxiliary action of the exhaust channel, the fluid can not only be discharged along the preset direction, but also the flow rate is increased, so that the overall discharge efficiency of the fluid can be improved, and the thermal propagation effect of the battery after thermal runaway can be effectively suppressed. Description of the Drawings

[0027] By describing the embodiments of the present application in more detail in conjunction with the drawings, the above and other objects, features, and advantages of the present application will become more obvious. The drawings are used to provide a further understanding of the embodiments of the present application, and constitute a part of the specification. Together with the embodiments of the present application, they are used to explain the present application and do not constitute a limitation to the present application. In the drawings, the same reference numerals generally represent the same components or steps.

[0028] Figure 1 It is a schematic structural diagram of a battery pack provided by an exemplary embodiment of the present application.

[0029] Figure 2 It is a schematic structural diagram of the battery pack provided by an exemplary embodiment of the present application after removing the outer shell from the first perspective.

[0030] Figure 3 It is a schematic structural diagram of the battery pack provided by an exemplary embodiment of the present application after removing the outer shell from the second perspective.

[0031] Figure 4 It is a schematic structural diagram of a mounting rack provided by an exemplary embodiment of the present application.

[0032] Figure 5 It is a schematic structural diagram of an exhaust valve provided by an exemplary embodiment of the present application.

[0033] Figure 6 It is a schematic structural diagram of an exhaust valve provided by another exemplary embodiment of the present application.

[0034] Figure 7 It is a schematic structural diagram of an exhaust hole, a transition valve, and an exhaust valve provided by an exemplary embodiment of the present application.

[0035] Figure 8 It is a schematic structural diagram of a mounting rack and a sealing body provided by an exemplary embodiment of the present application.

[0036] Reference numerals: 100 - battery pack; 110 - mounting bracket; 111 - exhaust hole; 112 - receiving groove; 113 - groove; 114 - first side wall; 120 - battery; 130 - exhaust valve; 131 - exhaust passage; 132 - valve body; 133 - guide plate; 134 - partition plate; 135 - protrusion; 140 - seal; 150 - housing; 151 - second side wall; 160 - second explosion - proof valve; 170 - transition valve; 171 - transition passage; 180 - blocking body. Detailed implementation manners

[0037] Next, exemplary embodiments according to the present application will be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. It should be understood that the present application is not limited by the exemplary embodiments described herein.

[0038] Figure 1 It is a schematic structural diagram of a battery pack provided for an exemplary embodiment of the present application. Figure 2 It is a schematic structural diagram of the battery pack provided for an exemplary embodiment of the present application from the first perspective after removing the housing. Figure 3 It is a schematic structural diagram of the battery pack provided for an exemplary embodiment of the present application from the second perspective after removing the housing. Figure 4 It is a schematic structural diagram of the mounting bracket provided for an exemplary embodiment of the present application. As Figures 1 to 4 shown, the battery pack 100 provided by the embodiment of the present application may include a mounting bracket 110 and a plurality of batteries 120. The mounting bracket 110 is provided with a plurality of through - exhaust holes 111. The plurality of batteries 120 are arranged on the mounting bracket 110. One end of the battery 120 is provided with a first explosion - proof valve (not shown in the figure), and the first explosion - proof valve is arranged corresponding to the exhaust hole 111.

[0039] In practical applications, when the battery 120 experiences thermal runaway, its corresponding first explosion - proof valve can be opened, and the high - temperature and high - pressure fluid generated by the thermal runaway can be discharged from the exhaust hole 111 to release pressure, thereby effectively preventing the battery pack 100 from exploding.

[0040] Figure 5 It is a schematic structural diagram of the exhaust valve provided for an exemplary embodiment of the present application. As Figures 1 to 5 shown, the battery pack 100 may further include an exhaust valve 130. The exhaust valve 130 is connected to the bottom wall of the mounting bracket 110. The exhaust valve 130 is provided with a preset direction ( Figure 5An exhaust passage 131 extending in the direction indicated by arrow A, and the exhaust passage 131 communicates with the exhaust hole 111. It should be understood that when the high-temperature and high-pressure fluid is discharged from the exhaust hole 111, it can enter the exhaust passage 131, and then, with the assistance of the exhaust passage 131, be discharged to the outside of the battery pack 100. The exhaust passage 131 communicates with the exhaust hole 111, and all of the exhaust hole 111 may correspondently communicate with the exhaust passage 131, or a part of the exhaust hole 111 may correspondently communicate with the exhaust passage 131, that is, the exhaust hole 111 and the exhaust passage 131 may be arranged in a dislocation manner, as long as the exhaust passage 131 and the exhaust hole 111 can communicate with each other.

[0041] It should be noted that the exhaust valve 130 can increase the flow rate of the fluid (including gas, liquid, particulate matter, etc.) discharged along the preset direction. That is to say, after the fluid enters the exhaust passage 131 from the exhaust hole 111, with the assistance of the exhaust passage 131, the fluid can not only be discharged along the preset direction, but also the flow rate is increased, so that the overall discharge efficiency of the fluid can be improved, and the thermal propagation effect of the battery 120 after thermal runaway can be effectively inhibited.

[0042] Of course, if the external fluid flows into the exhaust passage 131 in the direction opposite to the preset direction ( Figure 5 the direction indicated by arrow B), under the blocking action of the exhaust passage 131, the flow rate of the fluid is reduced, so that the flow of the external fluid in the exhaust passage 131 can be delayed or blocked, and the external fluid can be prevented from contacting the battery 120.

[0043] As Figure 5 shown, the exhaust valve 130 can be a Tesla valve, which can make the fluid show a significant flow rate difference when flowing along the preset direction and the direction opposite to the preset direction through its internal structure. Its specific structure is recorded in the related art and will not be introduced in detail here.

[0044] Figure 6 This is a schematic structural diagram of an exhaust valve provided by another exemplary embodiment of the present application. As Figure 6 shown, the exhaust valve 130 may include a valve body 132. The valve body 132 is provided with the aforementioned exhaust passage 131, and at least one end of the exhaust passage 131 penetrates the side wall of the valve body 132 to facilitate the outflow of the fluid.

[0045] In one embodiment, one end of the exhaust passage 131 penetrates the side wall of the valve body 132, and the other end is closed.

[0046] In one embodiment, both ends of the exhaust passage 131 penetrate the side wall of the valve body 132, and the fluid is discharged from one end of the exhaust passage 131 along the aforementioned preset direction.

[0047] As Figure 6As shown, the exhaust valve 130 may also include a plurality of guide plates 133 and a plurality of partition plates 134, the plurality of guide plates 133 are symmetrically arranged on both sides of the exhaust channel 131, and are spaced apart along a preset direction; along the preset direction, a partition plate 134 is provided between two adjacent guide plates 133, the plurality of guide plates 133 are tilted relative to the preset direction (the tilt angle is an acute angle), the plurality of partition plates 134 are tilted relative to the preset direction (the tilt angle is an acute angle), the plurality of guide plates 133 are arranged in parallel, the plurality of partition plates 134 are arranged in parallel, and the tilt direction of the plurality of guide plates 133 is the same as the tilt direction of the plurality of partition plates 134.

[0048] like Figure 6 As shown, in actual application, after the fluid enters the exhaust channel 131, the guide plate 133 guides the fluid along a preset direction ( Figure 6 The fluid then flows in the direction indicated by arrow A. A portion of the fluid flows within exhaust channel 131, while another portion enters the area between two adjacent guide plates 133, flows around partition plate 134, and then re-enters exhaust channel 131. This flow trend mirrors the original flow trend within exhaust channel 131. Consequently, the kinetic energy and flow velocity of the fluid after converging increase, and the fluid continues to flow in the predetermined direction. Thus, with the assistance of multiple guide plates 133 and multiple partition plates 134, the fluid can be accelerated in the predetermined direction, improving fluid discharge efficiency.

[0049] In one embodiment, the angle at which the guide plates 133 are inclined relative to the predetermined direction is equal to the angle at which the partition plates 134 are inclined relative to the predetermined direction. This allows the guide plates 133 and the partition plates 134 to direct the fluid in a more consistent direction, thereby maximizing the flow rate of the fluid after converging.

[0050] It should be understood that if Figure 6 As shown, if the fluid flows in the direction opposite to the preset direction ( Figure 6 The fluid flows into the exhaust channel 131 in the direction indicated by the arrow B in the middle. Part of the fluid flows in the exhaust channel 131, and the other part of the fluid enters the area between the two adjacent guide plates 133, flows around the partition plate 134, and then enters the exhaust channel 131 again. Its flow trend is different from the flow trend of the fluid originally in the exhaust channel 131. Therefore, the kinetic energy of the fluid after confluence is reduced and the flow rate is reduced. In this way, under the blocking effect of multiple guide plates 133 and multiple partition plates 134, the fluid can be decelerated and flowed in a direction opposite to the preset direction, thereby preventing external fluid from diffusing to the installation area of the battery 120.

[0051] Figure 7 This is a schematic diagram of the structure of the exhaust hole, transition valve and exhaust valve provided by an exemplary embodiment of the present application.Figure 7 As shown, the mounting bracket 110 is also provided with a through transition valve 170. The transition valve 170 is arranged between the exhaust hole 111 and the exhaust valve 130. The transition valve 170 is provided with a transition channel 171, and the transition channel 171 communicates with the exhaust hole 111 and the exhaust channel 131. At this time, a part of the exhaust hole 111 corresponds to the exhaust valve 130. By providing the transition valve 170, the exhaust efficiency can be improved, and the heat insulation effect between adjacent batteries can be enhanced.

[0052] It should be noted that the transition valve 170 can increase the flow rate of the fluid in the direction from the exhaust hole 111 to the exhaust channel 131. That is to say, during the process of the fluid flowing from the exhaust hole 111 to the exhaust channel 131, with the assistance of the transition channel 171, the fluid can not only be discharged from the exhaust hole 111 to the exhaust channel 131, but also be discharged from the transition channel 171 to the exhaust channel 131, and the flow rate is increased, thereby improving the overall discharge efficiency of the fluid and effectively suppressing the thermal runaway effect of the battery 120.

[0053] Of course, the transition valve 170 can also reduce the flow rate of the fluid in the direction from the exhaust channel 131 to the exhaust hole 111. That is to say, if the fluid flows from the exhaust channel 131 to the exhaust hole 111, under the blocking effect of the exhaust channel 131, the flow rate of the fluid is reduced, which can delay or prevent the fluid from flowing into the exhaust hole 111, avoid the contact between the external fluid and the battery 120, and reduce or avoid the influence of the thermal runaway fluid of the adjacent battery 120.

[0054] It should be noted that the structure of the transition valve 170 can refer to the structure of the aforementioned exhaust valve 130 (such as Figure 5 and Figure 6 the structures shown), which will not be elaborated here.

[0055] As Figure 2 and Figure 3 shown, the number of exhaust valves 130 is multiple. The multiple batteries 120 are divided into multiple groups. Each group of batteries 120 includes multiple batteries 120. The multiple exhaust valves 130 are arranged at intervals on the bottom wall of the mounting bracket 110 in a direction perpendicular to the preset direction ( Figure 3 the directions indicated by the arrows C and D in

[0056] It should be understood that if the battery 120 generates high-temperature and high-pressure fluid, the high-temperature and high-pressure fluid can be discharged to the exhaust valve 130 through the corresponding exhaust hole 111. In this way, different exhaust valves 130 can play a role in quickly discharging gas for different batteries 120 in different groups, preventing the temperature and pressure inside the battery pack 100 from rising. One exhaust valve 130 can communicate with multiple groups of batteries 120, which can simplify the structure and reduce costs. At this time, a part of the exhaust hole 111 is correspondingly communicated with the exhaust passage 131. As described above, by setting the transition valve 170, the communication area between the exhaust hole 111 and the exhaust passage 131 is also increased, thereby improving the exhaust efficiency.

[0057] Figure 8 The structural schematic diagram of the mounting rack and the sealing body provided by an exemplary embodiment of the present application. As Figure 3 and Figure 8 shown, the battery pack 100 may further include a sealing body 140. The sealing body 140 protrudes from the bottom wall of the mounting rack 110. A sealing body 140 is abutted between any two adjacent exhaust valves 130. The sealing body 140 can prevent the high-temperature and high-pressure fluid generated after the thermal runaway of the battery 120 from leaking between the exhaust valves 130, so that the high-temperature and high-pressure fluid flows along the aforementioned preset direction without forming a turbulent flow. The sealing body 140 extends along the preset direction to abut and seal with the exhaust valve 130. Two sealing bodies 140 are correspondingly arranged for each exhaust valve 130 to achieve sealing.

[0058] As Figure 8 shown, one end of the mounting rack 110 is provided with a blocking body 180. The blocking body 180 can be used to connect two adjacent sealing bodies 140. In practical applications, the blocking body 180 is used to abut one end of the exhaust valve 130, so as to achieve the effect of sealing the exhaust passage 131. In this way, it is beneficial for the high-temperature and high-pressure gas entering the exhaust passage 131 to flow along the preset direction, avoiding the diffusion of the high-temperature and high-pressure gas to other parts. The blocking body 180 is arranged at the end of the exhaust valve 130 in the preset direction.

[0059] As Figure 3 and Figure 8 shown, the side wall of the mounting rack 110 is provided with a groove 113, and the side wall of the exhaust valve 130 is provided with a protrusion 135. The protrusion 135 and the groove 113 are in sliding fit, which can facilitate the quick assembly of the exhaust valve 130 on the mounting rack 110. When the installation is in place, the exhaust valve 130 can be blocked by the blocking body 180 to indicate that the installation is in place.

[0060] It should be noted that the groove 113 can be a dovetail groove. In this way, after the protrusion 135 is engaged with the groove 113, the protrusion 135 is not easily separated from the groove 113, and thus the exhaust valve 130 can be effectively prevented from detaching from the mounting rack 110, and the limit in the horizontal and vertical directions can be achieved.

[0061] In one embodiment, a protrusion 135 is provided on the side wall of the mounting bracket 110, and a groove 113 is provided on the side wall of the exhaust valve 130. The protrusion 135 is slidably engaged with the groove 113, which can also facilitate the quick assembly of the exhaust valve 130 on the mounting bracket 110.

[0062] As Figures 2 to 4 shown, a receiving groove 112 is recessed in the first side wall 114 of the mounting bracket 110 along a preset direction ( Figure 2 and Figure 3 the direction indicated by the arrow A in

[0063] ). The receiving groove 112 communicates with the exhaust passage 131. It should be understood that the receiving groove 112 is provided at the leading end of the exhaust valve 130 in the preset direction. The high-temperature and high-pressure fluid accelerated and discharged from the exhaust passage 131 can first enter the receiving groove 112. The volume of the receiving groove 112 is larger than the volume of the exhaust passage 131, which can effectively release the pressure of the fluid and reduce the temperature of the fluid. Then the receiving groove 112 discharges the fluid, thereby effectively reducing the pressure and temperature of the discharged fluid. Figures 1 to 3 As

[0064] shown, the battery pack 100 may further include a housing 150. The housing 150 covers the outside of the mounting bracket 110. The housing 150 has a second side wall 151. The second side wall 151 is sealingly connected to the first side wall 114 to enclose the receiving groove 112 and form a relatively closed receiving space to prevent the fluid in the receiving groove 112 from leaking everywhere. Figure 1 Combined with

[0065] this, the battery pack 100 may further include a second explosion-proof valve 160. The second explosion-proof valve 160 is provided on the second side wall 151 and communicates with the receiving groove 112. In this way, after the high-temperature and high-pressure fluid in the exhaust passage 131 is discharged into the receiving groove 112, the pressure in the receiving groove 112 gradually increases. When the pressure increases to a threshold value, the second explosion-proof valve 160 opens, and the fluid in the receiving groove 112 can flow out from the second explosion-proof valve 160, achieving the purpose of discharging the fluid from the battery pack 100.

[0066] The basic principle of the present application has been described above in combination with specific embodiments. However, it should be noted that the advantages, advantages, effects, etc. mentioned in the present application are only examples and not limitations. It cannot be considered that these advantages, advantages, effects, etc. are essential for each embodiment of the present application. In addition, the above-disclosed specific details are only for the purpose of illustration and easy understanding, rather than limitations. The above details do not limit the present application to necessarily adopt the above specific details to implement.

[0067] The block diagrams of the devices, apparatuses, equipment, and systems involved in this application are only illustrative examples and are not intended to require or imply that the connection, arrangement, and configuration must be carried out in the manner shown in the block diagrams. As those skilled in the art will recognize, these devices, apparatuses, equipment, and systems can be connected, arranged, and configured in any way. Words such as "comprising", "including", "having", etc. are open-ended terms, meaning "including but not limited to", and can be used interchangeably with each other. The word "or" and "and" used herein refer to the phrase "and / or", and can be used interchangeably with it, unless the context clearly indicates otherwise. The word "such as" used herein refers to the phrase "such as but not limited to", and can be used interchangeably with it.

[0068] It should also be noted that in the devices, equipment, and methods of this application, each component or each step can be decomposed and / or recombined. These decompositions and / or recombinations should be regarded as equivalent solutions of this application.

[0069] The above description of the disclosed aspects is provided to enable any person skilled in the art to make or use this application. Various modifications to these aspects are very obvious to those skilled in the art, and the general principles defined herein can be applied to other aspects without departing from the scope of this application. Therefore, this application is not intended to be limited to the aspects shown herein, but rather to the broadest scope consistent with the principles and novel features disclosed herein.

[0070] The above description has been given for purposes of illustration and description. In addition, this description is not intended to limit the embodiments of this application to the forms disclosed herein. Although multiple example aspects and embodiments have been discussed above, those skilled in the art will recognize certain variations, modifications, changes, additions, and sub-combinations thereof.

Claims

1. A battery pack, characterized in that, Comprising: A mounting bracket (110) having a plurality of through exhaust holes (111); A plurality of batteries (120) disposed on the mounting bracket (110), with a first explosion-proof valve provided at one end of the battery (120), and the first explosion-proof valve being disposed corresponding to the exhaust hole (111); An exhaust valve (130) connected to the bottom wall of the mounting bracket (110), the exhaust valve (130) having an exhaust passage (131) extending in a preset direction, the exhaust passage (131) communicating with the exhaust hole (111), and the exhaust valve (130) being configured to increase the flow rate of the fluid discharged along the preset direction or decrease the flow rate of the fluid flowing in along the direction opposite to the preset direction.

2. The battery pack according to claim 1, wherein: The exhaust valve (130) is a Tesla valve.

3. The battery pack according to claim 1, characterized in that The exhaust valve (130) includes: A valve body (132) having the exhaust passage (131), with at least one end of the exhaust passage (131) penetrating through the side wall of the valve body (132); A plurality of guide plates (133) symmetrically disposed on both sides of the exhaust passage (131) and spaced apart along the preset direction, the plurality of guide plates (133) being parallel to each other and all inclined with respect to the preset direction; A plurality of partition plates (134) provided between adjacent two of the guide plates (133) along the preset direction, the plurality of partition plates (134) being parallel to each other and all inclined with respect to the preset direction; Wherein, the inclination directions of the plurality of guide plates (133) are the same as the inclination directions of the plurality of partition plates (134).

4. The battery pack according to claim 3, wherein, The plurality of partition plates (134) have the same inclination angle as the plurality of guide plates (133).

5. The battery pack according to any one of claims 1 to 4, characterized in that: The number of the exhaust valves (130) is multiple, and the plurality of batteries (120) are divided into multiple groups, with each group of the batteries (120) including a plurality of the batteries (120); The plurality of exhaust valves (130) are spaced apart along a direction perpendicular to the preset direction on the bottom wall of the mounting bracket (110), different exhaust valves (130) corresponding to different groups of the batteries (120), and the exhaust holes (111) correspondingly assembled with the plurality of batteries (120) in the same group are all communicated with the exhaust valve (130).

6. The battery pack according to claim 5, wherein, The battery pack further includes: A sealing body (140) protruding from the bottom wall of the mounting bracket (110), and the sealing body (140) is abutted between any adjacent two of the exhaust valves (130); A blocking body (180) is provided at one end of the mounting bracket (110), the blocking body (180) connecting adjacent two of the sealing bodies (140), and the blocking body (180) is configured to abut against one end of the exhaust valve (130) to seal the exhaust passage (131).

7. The battery pack according to any one of claims 1 to 4, characterized in that: The mounting bracket (110) is provided with one of a protrusion (135) and a groove (113), and the side wall of the exhaust valve (130) is provided with the other of the protrusion (135) and the groove (113). The protrusion (135) is in sliding fit with the groove (113), wherein the groove (113) is a dovetail groove.

8. The battery pack according to any one of claims 1 to 4, characterized in that: A receiving groove (112) is recessed in a first side wall (114) of the mounting bracket (110) along the preset direction. The receiving groove (112) communicates with the exhaust passage (131).

9. The battery pack according to claim 8, characterized in that: The battery pack further includes: A housing (150) covering the outside of the mounting bracket (110). The housing (150) has a second side wall (151) for sealingly connecting with the first side wall (114) to close the receiving groove (112). A second explosion-proof valve (160) provided on the second side wall (151). The second explosion-proof valve (160) communicates with the receiving groove (112).

10. The battery pack according to any one of claims 1 to 4, characterized in that, The mounting bracket (110) is further provided with a through transition valve (170) disposed between the exhaust hole (111) and the exhaust valve (130). The transition valve (170) is provided with a transition passage (171). The transition passage (171) communicates the exhaust hole (111) and the exhaust passage (131). The transition valve (170) is used to increase the flow rate of the fluid from the exhaust hole (111) to the exhaust passage (131) direction, or decrease the flow rate of the fluid from the exhaust passage (131) to the exhaust hole (111) direction.

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