Battery system and electric equipment

Abstract

The invention discloses a battery system and electric equipment, and the battery system comprises a plurality of battery packs and a battery box cover. Each battery pack comprises a battery frame and a battery module, the battery frame defines a containing cavity, the battery frame is provided with a first end and a second end which are opposite in the preset direction, an opening communicated with the containing cavity is formed in the first end, the second end is closed, the multiple battery packs are sequentially arranged in the preset direction, and in every two adjacent battery packs, the battery module is arranged in the containing cavity. The second end of the battery frame of one battery pack is connected with the first end of the battery frame of the other battery pack and seals the opening, an end battery pack located at one end is arranged in the multiple battery packs, and the end battery pack deviates from the second end of the battery frame of each other battery pack; the battery box cover is connected with the first end of the battery frame of the end battery pack and seals the opening; wherein the preset direction is the height direction of the battery pack. According to the battery system, the size and the weight of the battery system can be reduced.

Description

Technical Field

[0001] This application relates to the field of batteries, and in particular, to a battery system and an electrical device. Background Art

[0002] A multi-pack battery system is formed by combining multiple battery packs, and the multi-pack battery system is a common power battery system.

[0003] However, the existing multi-pack battery system assembles multiple battery packs through a battery assembly frame, resulting in a relatively large weight and volume of the existing multi-pack battery system. Summary of the Invention

[0004] The purpose of this application is to at least solve the problem that the weight and volume of the existing multi-pack battery system are both relatively large. This purpose is achieved in the following way:

[0005] A first aspect of this application provides a battery system, including: a plurality of battery packs and a battery box cover. Each of the battery packs includes a battery frame and a battery module. The battery frame defines a receiving cavity. The battery frame has a first end and a second end opposite to each other in a preset direction. The first end is formed with an opening communicating with the receiving cavity, and the second end is closed. The plurality of battery packs are arranged in sequence along the preset direction. Among every two adjacent battery packs, the second end of the battery frame of one battery pack is connected to the first end of the battery frame of the other battery pack and closes the opening. Among the plurality of battery packs, there is an end battery pack at one end. The end battery pack is located at the first end of the adjacent battery packs; the battery box cover is connected to the first end of the battery frame of the end battery pack and closes the opening; wherein, the preset direction is the height direction of the battery pack.

[0006] In the battery system of this application, the plurality of battery packs are directly connected through the battery frames, so that it is possible to avoid using an assembly frame for connection, and thus the weight and volume of the battery system in this embodiment can be reduced. In addition, among every two adjacent battery packs, the second end of the battery frame of one battery pack forms the top cover of the other battery pack. Thus, the number of top covers of the battery packs can be reduced, and further the weight and volume of the battery system in this embodiment can be reduced. Moreover, through the battery box cover, the end battery pack does not need to be provided with a separate top cover, so that the structure of the battery frame of the end battery pack is the same as that of the battery frames of other battery packs, and thus the production difficulty and design difficulty of the battery frame can be reduced.

[0007] In some embodiments, the battery frame of each battery pack includes a bottom plate and a plurality of connecting beams. The plurality of connecting beams are connected end to end in sequence. The bottom plate is located at the second end and is connected to each connecting beam. The bottom plate and the plurality of connecting beams define the accommodation cavity. The bottom plate has a protruding portion. Along the preset direction, the protruding portion is located outside the connecting beam. Among every two adjacent battery packs, along the preset direction, the protruding portion of one battery pack is detachably inserted into the accommodation cavity of the battery frame of the other battery pack.

[0008] In some embodiments, each connecting beam is provided with a flange located in the accommodation cavity. The flange is provided with a first sealing strip. Among every two adjacent battery packs, the protruding portion of one battery pack abuts against the first sealing strip of the other battery pack and is configured to be able to squeeze the first sealing strip.

[0009] In some embodiments, a second sealing strip is provided on one side of each connecting beam at the first end. Among every two adjacent battery packs, the connecting beam of one battery pack abuts against the second sealing strip of the other battery pack and is configured to be able to squeeze the second sealing strip.

[0010] In some embodiments, the first end of the connecting beam is further provided with a boss. Among every two adjacent battery packs, the boss of one battery pack abuts against the connecting beam of the other battery pack and is configured to be able to limit the connecting beam from crushing the first sealing strip and the second sealing strip.

[0011] In some embodiments, the battery box cover includes a plugging portion. The plugging portion is plugged into the accommodation cavity of the battery frame of the end battery pack. The plugging portion abuts against the first sealing strip and is configured to be able to squeeze the first sealing strip.

[0012] In some embodiments, the battery box cover further includes a cover body connected to the plugging portion. The cover body abuts against the second sealing strip of the end battery pack and is configured to be able to squeeze the second sealing strip.

[0013] In some embodiments, the boss of the end battery pack abuts against the cover body and is configured to be able to limit the cover body from crushing the second sealing strip, and is configured to be able to limit the connecting beam from crushing the second sealing strip, and is further configured to be able to limit the protruding portion from crushing the first sealing strip.

[0014] In some embodiments, along the inner and outer direction of the battery frame, the plurality of connecting beams are provided with a plurality of first assembly holes, and the protruding portions are provided with a plurality of second assembly holes. In each adjacent pair of the battery packs, the plurality of first assembly holes of one battery pack and the plurality of second assembly holes of the other battery pack are arranged in one-to-one correspondence and are connected by threaded members; and / or,

[0015] At least one of the plurality of connecting beams is provided with a cold plate. The cold plate is provided with a first male nozzle for water inlet and a second male nozzle for water drainage. Each battery pack further includes a cooling pipeline, which is located in the accommodation cavity and is connected to the battery module to be able to cool the battery module. The first male nozzle and the second male nozzle are both communicated with the cooling pipeline through the cold plate.

[0016] A second aspect of the present application proposes an electrical device, including the battery system described in the first aspect above.

[0017] The electrical device according to the embodiment of the present application includes the battery system described in the first aspect above. The plurality of battery packs are directly connected through the battery frame, so that the use of an assembly frame for connection can be avoided, and thus the weight and volume of the battery system in this embodiment can be reduced. In addition, in each adjacent pair of battery packs, the second end of the battery frame of one battery pack forms the top cover of the other battery pack. Thus, the number of top covers of the battery packs can be reduced, and further the weight and volume of the battery system in this embodiment can be reduced. Moreover, through the battery box cover, the end battery packs do not need to be provided with a separate top cover, so that the structure of the battery frame of the end battery packs is the same as that of the battery frames of other battery packs, and thus the production difficulty and design difficulty of the battery frame can be reduced, and further the production difficulty and design difficulty of the electrical device can be reduced. Description of the Drawings

[0018] By reading the detailed description of the preferred embodiments below, various other advantages and benefits will become clear to those of ordinary skill in the art. The drawings are only for the purpose of showing the preferred embodiments and are not considered to be a limitation of the present application. Moreover, throughout the drawings, the same reference numerals are used to represent the same components. Among them:

[0019] Figure 1 is a schematic diagram of the battery system according to the embodiment of the present application;

[0020] Figure 2 is a schematic diagram of the battery frame according to the embodiment of the present application;

[0021] Figure 3 is a partial front view of the battery frame according to the embodiment of the present application.

[0022] The reference numerals in the drawings are represented as follows:

[0023] 100. Battery system;

[0024] 1. Battery pack; 11. Battery frame; 111. Accommodating cavity; 112. Bottom plate; 1121. Protrusion; 1122. Second assembly hole; 113. Connecting beam; 1131. First assembly hole; 114. First sealing strip; 115. Second sealing strip; 116. Boss; 117. Cold plate; 1171. First male water nozzle; 1172. Second male water nozzle;

[0025] 2. Battery box cover; 21. Cover body;

[0026] 3. End battery pack;

[0027] a. Preset direction; b. Inner and outer directions of the battery frame; c. First end; d. Second end. Detailed implementation manners

[0028] The exemplary embodiments of the present application will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present application are shown in the drawings, it should be understood that the present application can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided so that the present application can be more thoroughly understood and the scope of the present application can be fully conveyed to those skilled in the art.

[0029] It should be understood that the terms used herein are for the purpose of describing specific exemplary embodiments only and are not intended to be limiting. Unless otherwise clearly specified in the context, the singular forms "a", "an" and "the" as used herein may also include the plural forms. The terms "include", "comprise", "contain" and "have" are inclusive and thus specify the presence of the 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 combinations thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring them to be performed in the particular order described or illustrated, unless the execution order is clearly indicated. It should also be understood that alternative steps may be used.

[0030] Although terms such as first, second, and third may be used herein to describe multiple elements, components, regions, layers, and / or sections, these elements, components, regions, layers, and / or sections should not be limited by these terms. These terms may be used only to distinguish one element, component, region, layer, or section from another. Unless the context clearly indicates otherwise, terms such as "first," "second," and other numerical terms do not imply an order or sequence when used in this application. Thus, the first element, component, region, layer, or section discussed below may be referred to as the second element, component, region, layer, or section without departing from the teachings of the exemplary embodiments. In the description of this application, "a plurality of" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0031] For ease of description, spatial relative relationship terms may be used herein to describe the relationship of one element or feature shown in the figure relative to another element or feature, such as "inside," "outside," "inner side," "outer side," "below," "beneath," "above," "over," etc. Such spatial relative relationship terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the figure. For example, if the device in the figure is rotated, an element described as "below" or "beneath" another element or feature will then be oriented as "above" or "over" the other element or feature. Thus, the exemplary term "below" can include both upward and downward orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions) and the spatial relative relationship descriptors used herein are accordingly interpreted.

[0032] In the description of the application, the technical terms "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "circumferential," "height direction," "predetermined direction," "second direction," etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the embodiments of this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed, operated, or used in a specific orientation. Therefore, it should not be construed as a limitation on the embodiments of this application.

[0033] In this application, unless otherwise clearly specified or limited, terms such as "installed", "connected", "linked", "fixed", etc. shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection, an electrical connection, or capable of communicating with each other; it can be directly connected, or indirectly connected through an intermediate medium, and can be the communication inside two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0034] The multi-pack battery system is formed by combining multiple battery packs, and the multi-pack battery system is a common power battery system.

[0035] However, the existing multi-pack battery system assembles multiple battery packs through a battery assembly frame, resulting in a relatively large weight and volume of the existing multi-pack battery system.

[0036] In order to at least solve the problem that the existing multi-pack battery system has a relatively large weight and volume, an embodiment of this application proposes a battery system 100, which can reduce the volume and weight of the battery system.

[0037] An embodiment of this application also proposes an electrical device including the battery system 100 as described in the above embodiment.

[0038] The following describes the battery system 100 and the electrical device of the embodiment of this application with reference to the accompanying drawings.

[0039] Combined Figure 1 and Figure 2 As shown, the battery system 100 of the embodiment of this application includes: a plurality of battery packs 1 and a battery box cover 2. Each battery pack 1 includes a battery frame 11 and a battery module. The battery frame 11 defines a receiving cavity 111. The battery frame 11 has a first end c and a second end d opposite to each other along a preset direction a. An opening communicating with the receiving cavity 111 is formed at the first end c, and the second end d is closed.

[0040] The plurality of battery packs 1 are arranged in sequence along the preset direction a. Among every two adjacent battery packs 1, the second end d of the battery frame 11 of one battery pack 1 is connected to the first end c of the battery frame 11 of the other battery pack 1 and closes the opening. Among the plurality of battery packs 1, there is an end battery pack 3 at one end. The end battery pack 3 is located at the first end c of the adjacent battery pack 1; the battery box cover 2 is connected to the first end c of the battery frame 11 of the end battery pack 3 and closes the opening; wherein, the preset direction a is the height direction of the battery pack 1.

[0041] In each adjacent pair of battery packs 1, the second end d of the battery frame 11 of one battery pack 1 is connected to the first end c of the battery frame 11 of the other battery pack 1 to close the opening. That is to say, the plurality of battery packs 1 are directly connected through the battery frames 11, so that the use of an assembly frame for connection can be avoided, and thus the weight and volume of the battery system 100 in this embodiment can be reduced.

[0042] In addition, in each adjacent pair of battery packs 1, the second end d of the battery frame 11 of one battery pack 1 is connected to the first end c of the battery frame 11 of the other battery pack 1 to close the opening. That is to say, in each adjacent pair of battery packs 1, the second end d of the battery frame 11 of one battery pack 1 forms the top cover of the other battery pack 1. Thus, the number of top covers of the battery packs 1 can be reduced, and the weight and volume of the battery system 100 in this embodiment can be further reduced.

[0043] Among the plurality of battery packs 1, there is an end battery pack 3 at one end. The end battery pack 3 is located at the first end c of the adjacent battery pack 1. That is to say, the end battery pack 3 faces away from the second end d of the battery frame 11 of each other battery pack 1. For example, when the first end c of each battery pack 1 is placed upward, the end battery pack 3 is the topmost battery pack 1. The opening of the first end c of the battery frame 11 of the end battery pack 3 is closed by the battery box cover 2.

[0044] Through the battery box cover 2, the end battery pack 3 does not need to be provided with a separate top cover, so that the structure of the battery frame 11 of the end battery pack 3 is the same as the structure of the battery frames 11 of the other battery packs 1. When designing the battery system 100, the number and stacking method of the battery packs 1 can be adjusted according to actual needs, without separately designing a special structure for the battery frame 11 of the end battery pack 3, so as to reduce the design difficulty.

[0045] By making the structure of the battery frame 11 of the end battery pack 3 the same as the structure of the battery frames 11 of the other battery packs 1, it is also convenient to produce the battery frames 11 through a unified mold, thereby reducing the production difficulty of the battery frames 11.

[0046] Combined Figure 1 and Figure 2As shown, in some embodiments, the battery frame 11 of each battery pack 1 includes a bottom plate 112 and a plurality of connecting beams 113. The plurality of connecting beams 113 are connected end to end in sequence. The bottom plate 112 is located at the second end d and is connected to each connecting beam 113. The bottom plate 112 and the plurality of connecting beams 113 define an accommodation cavity 111. The bottom plate 112 has a protruding portion 1121. Along the preset direction a, the protruding portion 1121 is located outside the connecting beam 113. In each adjacent pair of battery packs 1, along the preset direction a, the protruding portion 1121 of one battery pack 1 is detachably inserted into the accommodation cavity 111 of the battery frame 11 of the other battery pack 1.

[0047] By detachably inserting the protruding portion 1121 into the accommodation cavity 111, accurate positioning can be provided for the battery pack 1 during the assembly of the battery system 100, thereby improving the assembly accuracy of each battery pack 1 in the preset direction a.

[0048] By detachably inserting the protruding portion 1121 into the accommodation cavity 111, the connection stability between the battery packs 1 can be increased, and the reliability and safety of the battery system 100 in this embodiment can be improved.

[0049] Combined Figure 1 and Figure 2 As shown, in some embodiments, a flange located in the accommodation cavity 111 is provided on each connecting beam 113. The flange is provided with a first sealing strip 114. In each adjacent pair of battery packs 1, the protruding portion 1121 of one battery pack 1 abuts against the first sealing strip 114 of the other battery pack 1 and is configured to be able to squeeze the first sealing strip 114.

[0050] Since the plurality of battery packs 1 are arranged in sequence along the height direction of the battery pack 1, therefore, under the action of the gravity of the battery pack 1, the protruding portion 1121 squeezes the first sealing strip 114. After the first sealing strip 114 is squeezed by the protruding portion 1121, it can effectively fill the gap between the protruding portion 1121 and the flange, thereby forming a good sealing state.

[0051] Since the self-weight of the battery pack 1 will always exert pressure on the first sealing strip 114, making the first sealing strip 114 continuously in a squeezed state, it can provide more reliable sealing performance, thereby effectively protecting the battery module located in the accommodation cavity 111, and further enabling the battery system 100 in this embodiment to adapt to a variety of complex environments.

[0052] The self-weight of the battery pack 1 can act uniformly on the first sealing strip 114, that is to say, the first sealing strip 114 can be uniformly stressed, thereby reducing the probability of excessive or too small local pressure on the first sealing strip 114.

[0053] Using the self - weight of the battery pack 1 to squeeze the first sealing strip 114, the structure is simple and easy to maintain. It can reduce the workload and difficulty of inspecting and adjusting the sealing components, and reduce the maintenance cost and time cost. Using the self - weight of the battery pack 1 to squeeze the first sealing strip 114 can also reduce the number of parts, thereby reducing the production cost.

[0054] Combined Figure 1 with Figure 2 As shown, in some embodiments, a second sealing strip 115 is provided on one side of each connecting beam 113 at the first end c. Among every two adjacent battery packs 1, the connecting beam 113 of one battery pack 1 abuts against the second sealing strip 115 of the other battery pack 1 and is configured to be able to squeeze the second sealing strip 115.

[0055] Since multiple battery packs 1 are arranged in sequence along the height direction of the battery pack 1, under the gravity of the battery pack 1, the connecting beam 113 squeezes the second sealing strip 115. After the second sealing strip 115 is squeezed by the connecting beam 113, it can effectively fill the gap between the connecting beams 113 of the two battery packs 1, thereby forming a good sealing state.

[0056] Since the self - weight of the battery pack 1 will always exert pressure on the second sealing strip 115, making the second sealing strip 115 continuously in a squeezed state, it can provide more reliable sealing performance, thus effectively protecting the battery module located in the accommodation cavity 111, and further enabling the battery system 100 of this embodiment to adapt to a variety of complex environments.

[0057] The self - weight of the battery pack 1 can act on the second sealing strip 115 evenly, that is to say, the second sealing strip 115 can be evenly stressed, thereby reducing the probability of excessive or too small local pressure on the second sealing strip 115.

[0058] Using the self - weight of the battery pack 1 to squeeze the second sealing strip 115, the structure is simple and easy to maintain. It can reduce the workload and difficulty of inspecting and adjusting the sealing components, and reduce the maintenance cost and time cost. Using the self - weight of the battery pack 1 to squeeze the second sealing strip 115 can also reduce the number of parts, thereby reducing the production cost.

[0059] Through the first sealing strip 114 and the second sealing strip 115, multiple protections can be provided, thereby increasing the protection effect against foreign matters such as moisture and dust in the external environment.

[0060] Combined Figure 1 with Figure 2 and Figure 3As shown, in some embodiments, a boss 116 is further provided at the first end c of the connecting beam 113. Among every two adjacent battery packs 1, the boss 116 of one battery pack 1 abuts against the connecting beam 113 of another battery pack 1, and is configured to be able to limit the connecting beam 113 from crushing the second sealing strip 115, and is further configured to be able to limit the protruding portion 1121 from crushing the first sealing strip 114.

[0061] When the boss 116 abuts against the connecting beam 113, it can disperse the pressure exerted by the connecting beam 113 on the second sealing strip 115, thereby reducing the peak pressure borne by the local part of the second sealing strip 115, and further effectively avoiding the phenomenon of the second sealing strip 115 collapsing due to pressure concentration.

[0062] The boss 116 can limit the degree of extrusion of the protruding portion 1121 on the first sealing strip 114. Among two adjacent battery packs 1, the boss 116 of one battery pack 1 abuts against the connecting beam 113 of another battery pack 1, which can limit the protruding portion 1121 from excessively squeezing the first sealing strip 114, so that the first sealing strip 114 can avoid being excessively compressed or even crushed due to excessive pressure, and the first sealing strip 114 can always be kept within a reasonable compression range, thereby maintaining good sealing performance.

[0063] By providing the boss 116, the degree of extrusion of the connecting beam 113 on the second sealing strip 115 can be limited. Among two adjacent battery packs 1, the boss 116 of one battery pack 1 abuts against the connecting beam 113 of another battery pack 1, which can limit the connecting beam 113 from excessively squeezing the second sealing strip 115, so that the second sealing strip 115 can avoid being excessively compressed or even crushed due to excessive pressure, and the second sealing strip 115 can always be kept within a reasonable compression range, thereby maintaining good sealing performance.

[0064] During the actual operation of the battery system 100, the pressure between the battery packs 1 will change with factors such as the use environment and use state. The boss 116 can adaptively adjust the pressure of the protruding portion 1121 on the first sealing strip 114, and can also adaptively adjust the pressure of the connecting beam 113 on the second sealing strip 115. When the pressure increases, the boss 116 can play a limiting role to prevent the first sealing strip 114 and the second sealing strip 115 from being excessively pressed; when the pressure decreases, under the action of the self-weight of the boss 116 and the battery pack 1, it can ensure that the first sealing strip 114 and the second sealing strip 115 are still in a compressed state to maintain the sealing effect, so that the first sealing strip 114 and the second sealing strip 115 can maintain good working states under different pressure environments.

[0065] During the maintenance and repair of the battery system 100, the provision of the boss 116 facilitates the inspection and maintenance of the first sealing strip 114 and the second sealing strip 115. When it is necessary to replace the sealing strip, the provision of the boss 116 can reduce the difficulty of disassembly and installation, thereby improving the efficiency of maintenance work and reducing the maintenance cost.

[0066] Combined with Figure 1 and Figure 2 As shown, in some embodiments, the battery box cover 2 includes a plug-in portion (not shown in the figure), and the plug-in portion is plugged into the receiving cavity 111 of the battery frame 11 of the end battery pack 3. The plug-in portion abuts against the first sealing strip 114 and is configured to be able to squeeze the first sealing strip 114.

[0067] Under the gravity of the battery box cover 2, the plug-in portion squeezes the first sealing strip 114. After the first sealing strip 114 is squeezed by the plug-in portion, it can effectively fill the gap between the plug-in portion and the flange, thereby forming a good sealing state.

[0068] Since the self-weight of the battery box cover 2 will always exert pressure on the first sealing strip 114, making the first sealing strip 114 continuously in a squeezed state, it can provide more reliable sealing performance, thereby effectively protecting the battery module located in the receiving cavity 111, and further enabling the battery system 100 of this embodiment to adapt to various complex environments.

[0069] The self-weight of the battery box cover 2 can act evenly on the first sealing strip 114, that is to say, the first sealing strip 114 can be evenly stressed, thereby reducing the probability of excessive or too small local pressure on the first sealing strip 114.

[0070] Using the self-weight of the battery box cover 2 to squeeze the first sealing strip 114 has a simple structure and is easy to maintain. It can reduce the workload and difficulty of inspecting and adjusting the sealing components, and reduce the maintenance cost and time cost. Using the self-weight of the battery box cover 2 to squeeze the first sealing strip 114 can also reduce the number of parts, thereby reducing the production cost.

[0071] Combined with Figure 1 and Figure 2 As shown, in some embodiments, the battery box cover 2 further includes a cover body 21 connected to the plug-in portion. The cover body 21 abuts against the second sealing strip 115 of the end battery pack 3 and is configured to be able to squeeze the second sealing strip 115.

[0072] Under the gravity of the battery box cover 2, the cover body 21 squeezes the second sealing strip 115. After the second sealing strip 115 is squeezed by the cover body 21, it can effectively fill the gap between the cover body 21 and the connecting beam 113 of the end battery pack 3, thereby forming a good sealing state.

[0073] Due to the self-weight of the battery box cover 2, pressure is constantly exerted on the second sealing strip 115, keeping the second sealing strip 115 in a continuously squeezed state, thereby providing more reliable sealing performance, effectively protecting the battery modules of the end battery pack 3 located in the accommodation cavity 111, and enabling the battery system 100 of this embodiment to adapt to various complex environments.

[0074] The self-weight of the battery box cover 2 can act evenly on the second sealing strip 115. That is to say, the second sealing strip 115 can be evenly stressed, thereby reducing the probability of excessive or too small local pressure on the second sealing strip 115.

[0075] Using the self-weight of the battery box cover 2 to squeeze the second sealing strip 115 has a simple structure and is easy to maintain. It can reduce the workload and difficulty of inspecting and adjusting the sealing components, and reduce the maintenance cost and time cost. Using the self-weight of the battery pack 1 to squeeze the second sealing strip 115 can also reduce the number of parts, thereby reducing the production cost.

[0076] The first sealing strip 114 and the second sealing strip 115 can provide multiple protections, thereby increasing the protection effect against foreign matters such as moisture and dust in the external environment.

[0077] Combined Figure 1 、 Figure 2 and Figure 3 As shown, in some embodiments, the boss 116 of the end battery pack 3 abuts against the cover body 21, and is configured to be able to limit the cover body 21 from crushing the second sealing strip 115, and is also configured to be able to limit the insertion portion from crushing the first sealing strip 114.

[0078] When the boss 116 abuts against the cover body 21, it can disperse the pressure exerted by the cover body 21 on the second sealing strip 115, thereby reducing the peak value of the pressure borne by the local part of the second sealing strip 115, and effectively avoiding the phenomenon of the second sealing strip 115 collapsing due to pressure concentration.

[0079] The boss 116 can limit the degree of extrusion of the insertion portion on the first sealing strip 114. The boss 116 of the end battery pack 3 abuts against the cover body 21, which can limit the insertion portion from excessively squeezing the first sealing strip 114, preventing the first sealing strip 114 from being excessively compressed or even crushed due to excessive pressure, and keeping the first sealing strip 114 within a reasonable compression range at all times, thereby maintaining good sealing performance.

[0080] By providing the boss 116, the extrusion degree of the second sealing strip 115 by the cover 21 can be restricted. The boss 116 of the end battery pack 3 abuts against the cover 21, which can restrict the connecting beam 113 from excessively extruding the second sealing strip 115, so that the second sealing strip 115 can be prevented from being excessively compressed or even crushed due to excessive pressure, and the second sealing strip 115 can always be maintained within a reasonable compression range, thereby maintaining good sealing performance.

[0081] During the actual operation of the battery system 100, the pressure between the battery packs 1 will change with factors such as the use environment and use state. The boss 116 can adaptively adjust the pressure of the plugging part on the first sealing strip 114 and can also adaptively adjust the pressure of the cover 21 on the second sealing strip 115. When the pressure increases, the boss 116 can play a restricting role to prevent the first sealing strip 114 and the second sealing strip 115 from being excessively pressed; when the pressure decreases, under the self-weight of the boss 116 and the battery box cover 2, it can ensure that the first sealing strip 114 and the second sealing strip 115 are still in a compressed state to maintain the sealing effect, so that the first sealing strip 114 and the second sealing strip 115 can maintain good working states under different pressure environments.

[0082] During the maintenance and repair process of the battery system 100, by providing the boss 116, it is convenient to repair and maintain the first sealing strip 114 and the second sealing strip 115. When it is necessary to replace the sealing strip, by providing the boss 116, the difficulty of disassembly and installation can be reduced, thereby improving the efficiency of the maintenance work and reducing the maintenance cost.

[0083] Combined Figure 1 and Figure 2 As shown in

[0084] In some embodiments, along the inner and outer direction b of the battery frame, a plurality of connecting beams 113 are provided with a plurality of first assembly holes 1131, and the protruding part 1121 is provided with a plurality of second assembly holes 1122. In each adjacent pair of battery packs 1, the plurality of first assembly holes 1131 of one battery pack 1 and the plurality of second assembly holes 1122 of the other are arranged in one-to-one correspondence and are connected by threaded members.

[0085] By connecting the first assembly hole 1131 and the second assembly hole 1122 with threaded members, a tight and stable mechanical connection can be formed between adjacent battery packs 1, thereby increasing the stability of the connection of the battery packs 1.

[0086] By connecting the first assembly hole 1131 and the second assembly hole 1122 through a screw, a tight and stable mechanical connection can be formed between the end battery pack 3 and the battery box cover 2, thereby increasing the stability of the connection between the end battery pack 3 and the battery box cover 2.

[0087] like Figure 2 As shown, in some embodiments, at least one of the multiple connecting beams 113 is provided with a cold plate 117, and the cold plate 117 is provided with a first water faucet male connector 1171 for water intake and a second water faucet male connector 1172 for water discharge. Each battery pack 1 also includes a cooling pipeline, which is located in the accommodating cavity 111 and connected to the battery module to cool the battery module. The first water faucet male connector 1171 and the second water faucet male connector 1172 are both connected to the cooling pipeline through the cold plate 117.

[0088] The first water faucet male end 1171 is used for water inlet, and can introduce cooling medium into the cold plate 117, and the second water faucet male end 1172 is used for water discharge, so that the cooling medium flows out after absorbing the heat generated by the battery module. The cooling pipeline is connected to the battery module, and when the cooling medium flows in the pipeline, it can efficiently take away the heat generated by the battery module during the charging and discharging process, so as to cool the battery module and extend the service life of the battery module.

[0089] The electric device according to the embodiment of the present application includes the battery system 100 according to the above embodiment.

[0090] The electrical equipment of the embodiment of the present application includes the battery system 100 as described in the above embodiment, and the multiple battery packs 1 are directly connected through the battery frame 11, so that the use of the assembly frame for connection can be avoided, and the weight and volume of the battery system 100 of this embodiment can be reduced. In addition, in each of two adjacent battery packs 1, the second end d of the battery frame 11 of one battery pack 1 constitutes the top cover of the other battery pack 1. In this way, the number of top covers of the battery packs 1 can be reduced, so that the weight and volume of the battery system 100 of this embodiment can be further reduced. Moreover, by using the battery box cover 2, the end battery pack 3 does not need to be provided with a separate top cover, so that the structure of the battery frame 11 of the end battery pack 3 is the same as the structure of the battery frame 11 of the other battery packs 1, thereby reducing the production difficulty and design difficulty of the battery frame 11, thereby reducing the production difficulty and design difficulty of the electrical equipment.

[0091] The battery device provided by the embodiments of the present application can be used in electrical equipment that uses the battery device as a power source or various energy storage systems that use the battery device as an energy storage element. The electrical equipment can be, but is not limited to, mobile phones, tablets, laptop computers, electric toys, battery cars, electric vehicles, ships, spacecraft, etc. Among them, electric toys can include fixed or mobile electric toys, such as game consoles, electric vehicle toys, electric ship toys, and electric aircraft toys, etc. Spacecraft can include airplanes, rockets, space shuttles, and spaceships, etc.

[0092] In some embodiments, the electrical equipment is a vehicle, which can be a fuel vehicle, a gas vehicle, or a new energy vehicle. The new energy vehicle can be a pure electric vehicle, a hybrid electric vehicle, or an extended-range electric vehicle, etc. A battery system is provided inside the vehicle, and the battery system can be arranged at the bottom, head, or tail of the vehicle. The battery system can be used for power supply of the vehicle. For example, the battery device can be used as the operating power source of the vehicle.

[0093] In some specific embodiments, the vehicle further includes a controller and a motor. The controller is used to control the battery device to supply power to the motor. For example, it is used for the working power requirements during the start, navigation, and driving of the vehicle.

[0094] In some specific embodiments, the battery system not only serves as the operating power source of the vehicle but also serves as the driving power source of the vehicle, and replaces or partially replaces fuel or natural gas to provide driving power for the vehicle.

[0095] As described above, the above are only the preferred specific embodiments of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed in the present application should be covered by the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A battery system, characterized in that: include: A plurality of battery packs, each of which comprises a battery frame and a battery module, wherein the battery frame defines a receiving cavity, the battery frame has a first end and a second end opposite to each other in a preset direction, the first end is formed with an opening communicating with the receiving cavity, and the second end is closed, The multiple battery packs are arranged in sequence along the preset direction, and in every two adjacent battery packs, the second end of the battery frame of one battery pack is connected to the first end of the battery frame of another battery pack and the opening is closed, and the multiple battery packs include an end battery pack located at one end, and the end battery is located at the first end of the adjacent battery pack; A battery box cover connected to the first end of the battery frame of the end battery pack and closing the opening; Wherein, the preset direction is the height direction of the battery pack.

2. The battery system according to claim 1, characterized in that: The battery frame of each of the battery packs includes a bottom plate and a plurality of connecting beams, wherein the plurality of connecting beams are connected end to end in sequence, the bottom plate is located at the second end and is connected to each of the connecting beams, the bottom plate and the plurality of connecting beams define the accommodating cavity, the bottom plate has a protrusion, and along the preset direction, the protrusion is located outside the connecting beam, and in every two adjacent battery packs, along the preset direction, the protrusion of one battery pack can be detachably inserted into the accommodating cavity of the battery frame of the other battery pack.

3. The battery system according to claim 2, characterized in that: Each of the connecting beams is provided with a flange located in the accommodating cavity, and the flange is provided with a first sealing strip. In each of two adjacent battery packs, the protrusion of one battery pack abuts against the first sealing strip of the other battery pack and is configured to be able to squeeze the first sealing strip.

4. The battery system according to claim 3, characterized in that: A second sealing strip is provided on one side of each connecting beam located at the first end. In each of two adjacent battery packs, the connecting beam of one battery pack abuts against the second sealing strip of the other battery pack and is configured to be able to squeeze the second sealing strip.

5. The battery system according to claim 4, characterized in that: The first end of the connecting beam is also provided with a boss. In each of two adjacent battery packs, the boss of one battery pack abuts against the connecting beam of the other battery pack and is configured to limit the connecting beam from crushing the second sealing strip, and is also configured to limit the protrusion from crushing the first sealing strip.

6. The battery system according to claim 5, characterized in that: The battery box cover includes an inserting portion, which is inserted into the accommodating cavity of the battery frame of the end battery pack, and the inserting portion abuts against the first sealing strip and is configured to be able to squeeze the first sealing strip.

7. The battery system according to claim 6, characterized in that: The battery box cover also includes a cover body connected to the plug-in portion, the cover body abuts against the second sealing strip of the end battery pack, and is configured to be able to squeeze the second sealing strip.

8. The battery system according to claim 7, characterized in that: The boss of the end battery pack abuts against the cover body and is configured to limit the cover body from crushing the second sealing strip, and is also configured to limit the plug-in portion from crushing the first sealing strip.

9. The battery system according to claim 2 or 3, characterized in that: Along the inner and outer directions of the battery frame, the plurality of connecting beams are provided with a plurality of first assembly holes, the protruding portion is provided with a plurality of second assembly holes, and in each of two adjacent battery packs, the plurality of first assembly holes of one battery pack and the plurality of second assembly holes of the other battery pack are arranged one by one and connected by screws; and / or, At least one of the multiple connecting beams is provided with a cold plate, and the cold plate is provided with a first water faucet male head for water intake and a second water faucet male head for water discharge. Each of the battery packs also includes a cooling pipeline, which is located in the accommodating cavity and connected to the battery module to cool the battery module. The first water faucet male head and the second water faucet male head are both connected to the cooling pipeline through the cold plate.

10. An electrical device, characterized in that: Comprising the battery system according to any one of claims 1 to 9.

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