Energy storage device and electric equipment

Abstract

The embodiment of the invention provides an energy storage device and electric equipment, and the energy storage device can comprise a battery cell assembly which comprises a plurality of battery cells; the CCS assembly is provided with a low-voltage output connector and a high-voltage output connector, the low-voltage output connector is used for outputting sampling signals of the battery cells, and the high-voltage output connector is used for outputting electric signals of the battery cells; the end plates are positioned on two opposite sides of the battery cell assembly; the output base is located between the CCS assembly and the end plate, the output base is connected with the end plate in a clamped mode, and the output base comprises a first fixing part which is located between the end plate and the low-voltage output connector and used for supporting the low-voltage output connector; the second fixing part is positioned between the high-voltage output connector and the end plate, and the output base is made of an insulating material; and the high-voltage clamping block is clamped with the second fixing part and is fixedly connected with the high-voltage output connector, so that the maintenance efficiency of the energy storage device can be improved.

Description

Technical Field

[0001] This disclosure relates to the field of energy storage, and in particular to an energy storage device and electrical equipment. Background Technology

[0002] Energy storage systems typically involve first combining multiple battery cells into a single battery module, then connecting these modules in series and parallel within the entire battery pack, installing electrical components and structural fasteners, and finally mounting the battery pack onto a battery rack to form a complete battery cluster, thus creating the entire energy storage system.

[0003] Currently, in related technologies, end plates are typically used to support the output connector of the battery cell assembly to prevent the output connector and external conductive busbar from becoming loose. However, this method can lead to difficulties in repairing the battery when installation problems occur. Summary of the Invention

[0004] This disclosure provides an energy storage device and electrical equipment, which can at least improve the convenience of maintenance.

[0005] According to some embodiments of this disclosure, one aspect of this disclosure provides an energy storage device, comprising: a battery cell assembly including a plurality of battery cells arranged along a first direction; a CCS assembly fixed to the top surface of the battery cell assembly, the CCS assembly having a low-voltage output connector and a high-voltage output connector arranged along a second direction, the low-voltage output connector being used to output a sampling signal of the battery cell, and the high-voltage output connector being used to output an electrical signal of the battery cell; an end plate located on opposite sides of the battery cell assembly; an output base located between the CCS assembly and the end plate, and the output base being snapped into the end plate, the output base comprising: a first fixing portion located between the end plate and the low-voltage output connector for supporting the low-voltage output connector; a second fixing portion located between the high-voltage output connector and the end plate, the output base being made of an insulating material; and a high-voltage snap-fit ​​block snapping into the second fixing portion and fixedly connected to the high-voltage output connector.

[0006] In some embodiments, the low-voltage output connector includes: a PCB board, and an output connection terminal fixed to the surface of the PCB board. The first fixing portion includes: a first main body portion located on the end plate; a first limiting portion located on opposite sides of the first main body portion arranged along the second direction and protruding from the top of the first main body portion. The first limiting portion and the first main body portion form a first limiting space. The output connection terminal is located within the first limiting space, and the PCB board is located on top of the first limiting portion.

[0007] In some embodiments, the first limiting portion includes a first through hole, the PCB board includes a second through hole, and the energy storage device further includes a fixing device that passes through the first through hole and the second through hole to fix the PCB board to the first limiting portion.

[0008] In some embodiments, the first limiting portion includes a first groove, which communicates with the second through hole.

[0009] In some embodiments, in the second direction, the width of the first limiting portion near the high-voltage output connector is greater than the width of the first limiting portion away from the high-voltage output connector.

[0010] In some embodiments, the first body portion includes: a plurality of second groove groups arranged along a second direction, each second groove group containing at least one second groove, each second groove extending along the first direction, and a portion of the second groove group openings facing the cell assembly, and a portion of the second groove group openings facing away from the cell assembly.

[0011] In some embodiments, the end plate further includes a fixed top plate, and the first fixed portion further includes a snap-fit ​​portion, which is located on the side of the first body portion away from the low-voltage output connector and forms a slot with the first body portion, and the fixed top plate snaps into the slot.

[0012] In some embodiments, the second fixing portion includes: a base plate located at the top of the end plate; a first limiting baffle located on opposite sides of the base plate along the second direction; and a limiting top plate spaced apart from the base plate. The base plate, the first limiting baffle, and the limiting top plate form a second limiting space, and at least a portion of the high-voltage clamping block is located within the second limiting space.

[0013] In some embodiments, the high-voltage latching block includes: a second main body portion, at least a portion of which is located between the base plate and the limiting top plate, and the second main body portion is fixedly connected to the high-voltage output connector; and a second limiting baffle, a portion of which is connected to the second main body portion, a portion of which is spaced apart from the second main body portion, and the second limiting baffle is located between adjacent first limiting baffles.

[0014] In some embodiments, the high-voltage latching block further includes: a latch, the latch being located between the second main body and the second limiting baffle, the latch being connected to the second limiting baffle; the first limiting baffle is provided with a latch engaging hole, the latch engaging with the latch engaging hole.

[0015] In some embodiments, the second fixing portion further includes: a first limiting post, which is spaced apart from the first limiting baffle along the second direction, and the first limiting post abuts against a portion of the second main body portion; and a second limiting post, which extends from the first limiting baffle toward a direction close to the first limiting post, which is spaced apart from the first limiting post along the second direction, and the second limiting post abuts against a portion of the second main body portion.

[0016] In some embodiments, the second main body further includes a guide rib, which is located between the first limiting post and the second limiting post.

[0017] In some embodiments, the second fixing portion further includes: a guide baffle connected to the first limiting baffle, the guide baffle being located on the top surface of a portion of the second main body, and the guide baffle having a positioning hole; the second main body includes: a connecting post located within the positioning hole, and the connecting post being fixedly connected to the high-voltage output connector.

[0018] In some embodiments, in the third-party direction, the height of the second limiting space is greater than the height of the high-voltage clamping block.

[0019] In some embodiments, the high-voltage latch block further includes a first flange located on the side of the high-voltage latch block away from the cell assembly.

[0020] In some embodiments, it further includes a protective cover located on the side of the high-voltage output connector away from the second fixing portion.

[0021] In some embodiments, the protective cover includes a second flange disposed on the side of the protective cover away from the cell assembly.

[0022] According to some embodiments of this disclosure, another aspect of this disclosure also provides an electrical device, including some or all of the energy storage devices described above.

[0023] The technical solution provided by the embodiments of this disclosure has at least the following advantages: On the one hand, the output base facilitates the fixed connection of the low-voltage output connector of the CCS component to the external conductive busbar, and the output base serves to support the low-voltage output connector. On the other hand, the output base includes a first fixing part and a second fixing part. The second fixing part is used to snap on the high-voltage snap block, which is used to fix the high-voltage output connector to the external conductive busbar. By setting the fixing method between the high-voltage snap block and the output base to a snap-fit ​​type, the high-voltage snap block can be directly disassembled separately when an abnormality occurs, thereby improving the convenience of maintenance. Moreover, since the high-voltage snap block and the output base are connected by a snap-fit ​​type, they can be pre-assembled into a whole when the materials arrive, without affecting the installation efficiency. Attached Figure Description

[0024] One or more embodiments are illustrated by way of example with corresponding pictures in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Unless otherwise stated, the pictures in the accompanying drawings do not constitute a limitation on scale. In order to more clearly illustrate the technical solutions in the embodiments of this disclosure or the conventional technology, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a partial structural schematic diagram of an energy storage device provided in an embodiment of the present disclosure;

[0026] Figure 2 This is an enlarged schematic diagram of a partial structure of an energy storage device according to an embodiment of the present disclosure;

[0027] Figure 3 This is a schematic diagram of the structure of an output base provided in one embodiment of the present disclosure;

[0028] Figure 4 This is a structural schematic diagram of an output base provided in one embodiment of the present disclosure from another perspective;

[0029] Figure 5 This is a schematic diagram of the structure of a high-voltage connector block provided in one embodiment of the present disclosure;

[0030] Figure 6 This is a structural schematic diagram of a high-voltage connector block provided in one embodiment of the present disclosure from another perspective;

[0031] Figure 7 This is a schematic diagram of the structure of an output base and a high-voltage connector block before assembly, according to an embodiment of the present disclosure.

[0032] Figure 8This is a schematic diagram of the structure of an output base and a high-voltage connector block assembled according to an embodiment of the present disclosure;

[0033] Figure 9 This is a top view of an output base and a high-voltage connector block assembled according to an embodiment of the present disclosure;

[0034] Figure 10 This is a schematic diagram of the structure of a protective cover provided in one embodiment of the present disclosure;

[0035] Figure 11 This is a structural schematic diagram of a protective cover provided in one embodiment of the present disclosure from another perspective;

[0036] Figure 12 This is a schematic diagram of the structure of a protective cover, an output base, and a high-voltage connector block after assembly, according to an embodiment of this disclosure. Detailed Implementation

[0037] In related technologies, end plates are typically used to support the low-voltage and high-voltage output connectors of CCS components. However, when the connection or fixation of the low-voltage or high-voltage output connectors is abnormal, the entire end plate needs to be replaced, resulting in high maintenance costs and difficulties.

[0038] In this embodiment, on the one hand, the output base facilitates the fixed connection of the low-voltage output connector of the CCS component to an external conductive busbar, and the output base serves to support the low-voltage output connector. On the other hand, the output base includes a first fixing part and a second fixing part. The second fixing part is used to snap on the high-voltage snap-on block, which is used to fix the high-voltage output connector to the external conductive busbar. By setting the fixing method between the high-voltage snap-on block and the output base to a snap-on type, the high-voltage snap-on block can be directly disassembled separately when an abnormality occurs, thereby improving the convenience of maintenance. Moreover, since the high-voltage snap-on block and the output base are connected by a snap-on type, they can be pre-assembled into a whole when the materials arrive, without affecting the installation efficiency.

[0039] In the description of the embodiments of this disclosure, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary or secondary relationship of the indicated technical features. In the description of the embodiments of this disclosure, "a plurality of" means two or more, unless otherwise explicitly defined.

[0040] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this disclosure. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0041] In the description of the embodiments of this disclosure, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent three cases: A exists, A and B exist simultaneously, and B exists. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0042] In the description of the embodiments of this disclosure, the term "multiple" refers to two or more (including two), similarly, "multiple groups" refers to two or more (including two groups), and "multiple pieces" refers to two or more (including two pieces).

[0043] In the description of the embodiments of this disclosure, the technical terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this disclosure and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this disclosure.

[0044] In the description of the embodiments of this disclosure, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this disclosure according to the specific circumstances.

[0045] In the accompanying drawings corresponding to the embodiments of this disclosure, the thickness and area of ​​the layers are enlarged for better understanding and ease of description. When describing a component (such as a layer, film, region, or substrate) on or on the surface of another component, the component may be "directly" located on the surface of the other component, or there may be a third component between the two components. Conversely, when describing a component on the surface of another component, or when another component is formed or disposed on the surface of a component, it indicates that there is no third component between the two components. Furthermore, when describing a component as being "generally" formed on another component, it means that the component is not formed on the entire surface (or front surface) of the other component, nor is it formed on a portion of the edge of the entire surface.

[0046] In the description of embodiments of this disclosure, when a component "includes" another component, other components are not excluded unless otherwise stated, and may be further included. Furthermore, when a component such as a layer, film, region, or plate is referred to as being "on / located" on another component, it can be "directly" on the other component (i.e., located on the surface of the other component with no other components between them), or another component may be present therein. Additionally, when a component such as a layer, film, region, or plate is "directly located" on another component, or when a component such as a layer, film, region, or plate is located on the surface of another component, it indicates that no other components are located therein.

[0047] The terminology used in the description of the various embodiments herein is for the purpose of describing particular embodiments only and is not intended to be limiting. As used in the description and claims of the various embodiments described, the term "component" is also intended to include the plural form unless the context clearly indicates otherwise. Components include layers, films, regions, or plates, etc.

[0048] The embodiments of this disclosure will now be described in detail with reference to the accompanying drawings. However, those skilled in the art will understand that many technical details have been provided in the embodiments of this disclosure to facilitate a better understanding of the disclosure. However, the technical solutions claimed in this disclosure can be implemented even without these technical details and various variations and modifications based on the following embodiments.

[0049] refer to Figures 1 to 12 ,in, Figure 1 This is a partial structural schematic diagram of an energy storage device provided in an embodiment of the present disclosure; Figure 2 This is an enlarged schematic diagram of a partial structure of an energy storage device according to an embodiment of the present disclosure; Figure 3 This is a schematic diagram of the structure of an output base provided in one embodiment of the present disclosure; Figure 4 This is a structural schematic diagram of an output base provided in one embodiment of the present disclosure from another perspective; Figure 5This is a schematic diagram of the structure of a high-voltage connector block provided in one embodiment of the present disclosure; Figure 6 This is a structural schematic diagram of a high-voltage connector block provided in one embodiment of the present disclosure from another perspective; Figure 7 This is a schematic diagram of the structure of an output base and a high-voltage connector block before assembly, according to an embodiment of the present disclosure. Figure 8 This is a schematic diagram of the structure of an output base and a high-voltage connector block assembled according to an embodiment of the present disclosure; Figure 9 This is a top view of an output base and a high-voltage connector block assembled according to an embodiment of the present disclosure; Figure 10 This is a schematic diagram of the structure of a protective cover provided in one embodiment of the present disclosure; Figure 11 This is a structural schematic diagram of a protective cover provided in one embodiment of the present disclosure from another perspective; Figure 12 This is a schematic diagram of the structure of a protective cover, an output base, and a high-voltage connector block after assembly, according to an embodiment of this disclosure.

[0050] In some embodiments, the energy storage device may include a cell assembly 100, which includes a plurality of cells 110 arranged along a first direction X.

[0051] The energy storage device may also include: a CCS component 101, which is fixed on the top surface of the cell assembly 100. The CCS component 101 is provided with a low-voltage output connector 111 and a high-voltage output connector arranged along the second direction Y. The low-voltage output connector 111 is used to output the sampling signal of the cell 110, and the high-voltage output connector is used to output the electrical signal of the cell 110.

[0052] The energy storage device may also include: end plates 102, which are located on opposite sides of the cell assembly 100.

[0053] The energy storage device may further include: an output base 103, which is located between the CCS component 101 and the end plate 102, and is snapped into the end plate 102. The output base 103 includes: a first fixing part 113, which is located between the end plate 102 and the low-voltage output connector 111, for supporting the low-voltage output connector 111; and a second fixing part 123, which is located between the high-voltage output connector and the end plate 102. The material of the output base 103 is an insulating material.

[0054] The energy storage device may also include: a high-voltage snap-fit ​​block 104, which snaps into the second fixed part 123 and is fixedly connected to the high-voltage output connector.

[0055] In this embodiment, on the one hand, the output base 103 facilitates the fixed connection of the low-voltage output connector 111 of the CCS component 101 to an external conductive busbar. The output base 103 serves to support the low-voltage output connector 111. On the other hand, the output base 103 includes a first fixing part 113 and a second fixing part 123. The second fixing part 123 is used to snap on the high-voltage snap-on block 104. The high-voltage snap-on block 104 is used to fix the high-voltage output connector to the external conductive busbar. By setting the fixing method between the high-voltage snap-on block 104 and the output base 103 to be snap-on, the high-voltage snap-on block 104 can be directly disassembled separately when there is an abnormality, thereby improving the convenience of maintenance. Moreover, since the high-voltage snap-on block 104 and the output base 103 are connected by snap-on, they can be pre-assembled into a whole when the materials arrive, without affecting the installation efficiency.

[0056] The number of cells 110 in the cell assembly 100 can be selected according to the output power required by the battery module. The higher the output power required by the battery module, the more cells 110 can be.

[0057] CCS assembly 101 may also include an isolation plate with a groove in which an aluminum bar is installed. The aluminum bar is used to connect the battery cell 110 in series to output through a high-voltage output connector (which is covered by a protective cover 105 and not shown in the figure). The high-voltage output connector is the component that outputs the current and voltage of the battery cell assembly 100.

[0058] In some embodiments, the CCS (Cells Contact System) assembly may further include sampling connection lines, which can monitor the voltage and temperature of each cell 110 of the cell assembly 100. The collected signals can be transmitted to and output through the low-voltage output connector 111 to achieve overcurrent protection and thermal runaway management of the cell assembly 100. The CCS assembly 101 can be fixedly connected to the cell assembly 100, and the number of CCS assemblies 101 can correspond to the number of cell assemblies 100.

[0059] The sampling connection cable can be soldered to the aluminum bar to establish an electrical connection, thereby facilitating the acquisition of various data from the battery cell 110. The sampling connection cable can be made of copper wire or aluminum alloy wire.

[0060] In some embodiments, the low-voltage output connector 111 may include: a PCB (Printed Circuit Board) 121 and an output connection terminal 131 fixed on the surface of the PCB 121. The PCB 121 has built-in wiring loops to collect electrical signals output from the sampling connection lines, and the output connection terminal 131 is a port for connecting to an external busbar.

[0061] In some embodiments, the low-voltage output connector 111 may include a flexible printed circuit (FPC).

[0062] In some embodiments, the end plate 102 can be a polymer nanoplastic material, such as nano-polyolefin, nano-nylon, nano-polyester, and nano-polyoxymethylene, etc. Polymer nanoplastic materials have high strength, and using them as the material for the end plate 102 can improve the stress resistance of the end plate 102 while achieving insulation.

[0063] refer to Figures 1 to 4 In some embodiments, the first fixing portion 113 includes: a first main body portion 133 located on the end plate 102; a first limiting portion 143 located on opposite sides of the first main body portion 133 arranged along the second direction Y and protruding from the top of the first main body portion 133, the first limiting portion 143 and the first main body portion 133 forming a first limiting space 1131, the output connection terminal 131 located in the first limiting space 1131, and the PCB board 121 located on the top of the first limiting portion 143. The first limiting space 1131 formed by the first main body 133 and the first limiting part 143 is used to position the low-voltage output connection. At the same time, the output connection terminal 131 is located within the first limiting space 1131 to limit the output connection terminal 131 in the second direction Y, thereby preventing the output connection terminal 131 from shaking in the second direction Y. Meanwhile, fixing the PCB board 121 to the top of the first limiting part 143 can achieve the purpose of supporting and fixing the low-voltage output connector 111. In addition, since the first main body 133 and the first limiting part 143 form the first limiting space 1131, it can also provide connection space for the connection between the external conductive bus and the low-voltage output connector 111, thereby avoiding interference during the connection process between the external conductive bus and the low-voltage output connector 111.

[0064] In some embodiments, the output connection terminal 131 is disposed on two opposite surfaces of the PCB board 121, wherein the output connection terminal 131 facing the end plate 102 is located within the first limiting space 1131.

[0065] In some embodiments, the first limiting part 143 includes: a first through hole 1431, and the PCB board 121 includes: a second through hole ( Figure 2 The energy storage device also includes a fixing device 106 (which is blocked by the fixing device 106). The fixing device 106 passes through the first through hole 1431 and the second through hole to fix the PCB board 121 to the first limiting part 143. The fixing device 106 can improve the reliability of the fixation between the low voltage output connector 111 and the output base 103.

[0066] In some embodiments, the fixing device 106 may be a screw, and the first through hole 1431 may be provided with threads to facilitate connection with the fixing device 106.

[0067] In some embodiments, the first limiting part 143 includes a first groove 1432, which communicates with a second through hole. The first groove 1432 provides installation space for the fixing device 106. For example, the fixing device 106 is a screw, and a nut can be installed through the first groove 1432 to fix the low-voltage output connector 111 to the output base 103.

[0068] In some embodiments, in the second direction Y, the width of the first limiting portion 143 near the high-voltage output connector is greater than the width of the first limiting portion 143 away from the high-voltage output connector. By setting the width of the first limiting portion 143 near the high-voltage output connector to be larger, the distance between the output connection terminal 131 and the high-voltage output connector can be increased, thereby avoiding short circuit between the output connection terminal 131 and the high-voltage output connector, and increasing the electrical clearance between the output connection terminal 131 and the high-voltage output connector, thus improving the reliability of the energy storage device.

[0069] In some embodiments, the first body portion 133 includes a plurality of second groove groups 153 arranged along a second direction Y, each second groove group 153 containing at least one second groove 1531, each second groove 1531 extending along a first direction X, and the openings of a portion of the second groove groups 153 facing the cell assembly 100, and the openings of a portion of the second groove groups 153 facing away from the cell assembly 100. In other words, the first body portion 133 includes a first surface and a second surface arranged along the first direction X, the second surface being close to the cell assembly 100, the opening direction of the second groove groups 153 facing the cell assembly 100 being the second surface facing the first surface, and the opening direction of the second groove groups 153 facing away from the cell assembly 100 being the first surface facing the second surface.

[0070] On the one hand, the provision of the second groove 1531 inevitably involves the presence of edges required to form the second groove 1531. These edges can increase the creepage distance between the low-voltage output connector 111 and the high-voltage output connector, thereby improving the reliability of the energy storage device. On the other hand, the provision of multiple second grooves 1531 can facilitate the formation of the first main body 133 and facilitate the demolding of the first main body 133. At the same time, the openings of some second groove groups 153 face the cell assembly 100, while the openings of some second groove groups 153 face away from the cell assembly 100, thus avoiding the problem of reduced reliability of the first main body 133 when the openings of the second groove groups 153 face the same side.

[0071] In some embodiments, the opening directions of the second groove group 153 can be arranged alternately. For example, one opening of two adjacent second groove groups 153 faces the cell assembly 100, and the opening of the other second groove group 153 faces away from the cell assembly 100. The opening direction of the second groove group 153 can also be adjusted as needed.

[0072] In some embodiments, the first main body 133 further includes a clearance groove 163, which is located below the low-voltage output connector 111 to expose the interface of the low-voltage output connector 111, thereby avoiding interference when the low-voltage output connector 111 is connected to an external busbar.

[0073] In some embodiments, the end plate 102 further includes a fixed top plate, and the first fixing portion 113 further includes a snap-fit ​​portion 173. The snap-fit ​​portion 173 is located on the side of the first main body portion 133 away from the low-voltage output connector 111, and forms a slot 1731 with the first main body portion 133. The fixed top plate snaps into the slot 1731. In other words, the first main body portion 133 is located above the fixed top plate, the snap-fit ​​portion 173 is located below the fixed top plate, and the fixed top plate is located within the slot 1731, so as to achieve the purpose of snapping the output base 103 onto the end plate 102.

[0074] The first fixing portion 113 may include a plurality of snap-fit ​​portions 173 arranged at intervals along the second direction Y. The first fixing portion 113 may also include a single snap-fit ​​portion 173 extending along the second direction Y. Setting the first fixing portion 113 to include a plurality of snap-fit ​​portions 173 arranged at intervals along the second direction Y can reduce the use of material in the first fixing portion 113, thereby achieving the purpose of saving costs.

[0075] In some embodiments, the end plate 102 and the cell assembly 100 are fixed together by a strap, which fixes the end plate 102 and the cell assembly 100 together along the first direction X. A portion of the output base 103 is fixed between the end plate 102 and the cell assembly 100 so that the output base 103 is fixed in the first direction X. A limiting groove may also be provided on the end plate 102, and the output base 103 is placed in the limiting groove so that the output base 103 is fixed in the second direction Y. The slot 1731 formed between the snap-fit ​​part 173 and the first main body part 133 further fixes the output base 103 in the third direction Z.

[0076] In some embodiments, the second fixing portion 123 includes: a base plate 183 located at the top of the end plate 102; a first limiting baffle 193 located on opposite sides of the base plate 183 along the second direction Y; and a limiting top plate 203 spaced apart from the base plate 183. The base plate 183, the first limiting baffle 193, and the limiting top plate 203 form a second limiting space 213, within which at least a portion of the high-voltage latching block 104 is located. The cooperation between the base plate 183 and the limiting top plate 203 restricts the high-voltage latching block 104 from moving in the third direction Z. The first limiting baffle 193 restricts the high-voltage latching block 104 from moving in the second direction Y, while the limiting top plate 203 itself restricts the high-voltage latching block 104 from moving in the first direction X, thus achieving the limitation of the high-voltage latching block 104.

[0077] refer to Figures 5 to 9 and combined Figure 3 and Figure 4 In some embodiments, the high-voltage latching block 104 includes: a second main body 114, at least a portion of which is located between the base plate 183 and the limiting top plate 203, and the second main body 114 is fixedly connected to the high-voltage output connector; and a second limiting baffle 124, a portion of which is connected to the second main body 114 and a portion of which is spaced apart from the second main body 114, and the second limiting baffle 124 is located between adjacent first limiting baffles 193. The second main body 114 allows the high-voltage output connector to be connected to an external conductive busbar, thereby enabling the output of electrical signals. The second limiting baffle 124 is located between adjacent first limiting baffles 193 to restrict the movement of the high-voltage latching block 104 in the second direction Y.

[0078] In some embodiments, the high-voltage latching block 104 further includes a latch 134, which is located between the second main body 114 and the second limiting baffle 124 and is connected to the second limiting baffle 124. The first limiting baffle 193 is provided with a latch engagement hole 223, and the latch 134 engages with the latch engagement hole 223. When the high-voltage latching block 104 engages with the second fixing part 123, the latch 134 located between the second main body 114 and the second limiting baffle 124 is embedded in the latch engagement hole 223. When the high-voltage latching block 104 needs to be removed, the latch 134 needs to be disengaged from the latch engagement hole 223. This can prevent the installed high-voltage latching block 104 from separating from the output base 103, and also facilitates the separate disassembly and installation of a new high-voltage latching block 104 when the high-voltage latching block 104 malfunctions, so as to complete the maintenance.

[0079] In some embodiments, the second fixing portion 123 further includes: a first limiting post 233, which is spaced apart from the first limiting baffle 193 along a second direction Y, and abuts against a portion of the second main body portion 114; and a second limiting post 243, which extends from the first limiting baffle 193 toward a direction close to the first limiting post 233, which is spaced apart from the first limiting post 233 along the second direction Y, and abuts against a portion of the second main body portion 114. During installation, the first limiting post 233 and the second limiting post 243 limit the distance the second main body portion 114 can move toward the cell assembly 100, thereby preventing the second main body portion 114 from moving too far toward the cell assembly 100, and thus preventing interference between the second main body portion 114 and the rest of the energy storage device.

[0080] In some embodiments, the second fixing portion 123 may include a plurality of first limiting posts 233 and a plurality of second limiting posts 243, wherein the plurality of first limiting posts 233 are arranged at intervals along the second direction Y, and the plurality of second limiting posts 243 are arranged at intervals along the second direction Y.

[0081] In some embodiments, the second main body 114 further includes a guide rib 144, which is located between the first limiting post 233 and the second limiting post 243. The guide rib 144 can be used to test whether the high voltage snap-fit ​​block 104 and the output base 103 are properly engaged during the installation process, or it can guide the installation of the high voltage snap-fit ​​block 104 and the output base 103, thereby improving the convenience of installing the high voltage snap-fit ​​block 104 and the output base 103.

[0082] The second fixed part 123 includes a plurality of first limiting posts 233 and a plurality of second limiting posts 243. The number of guide ribs 144 can be the same as the number of first limiting posts 233 and second limiting posts 243, so that each guide rib 144 cooperates with the corresponding first limiting post 233 and second limiting post 243.

[0083] In some embodiments, the second fixing part 123 further includes a third limiting baffle 253, which is located between the high voltage connector 104 and the cell assembly 100 and is used to limit the distance that the high voltage connector 104 moves along the first direction X. The third limiting baffle 253 is also provided with a guide through hole 2531. The second main body 114 also includes a second guide rib 154, which is directly opposite to the guide through hole 2531. The guide through hole 2531 is used to guide the installation of the high voltage connector 104 and the output base 103.

[0084] The guide through hole 2531 can be located in the middle of the third limiting baffle 253, and the second guide rib 154 can be located between the spaced guide ribs 144.

[0085] In some embodiments, the second fixing part 123 may further include: a third limiting post 263, one end of the third limiting post 263 being connected to the first limiting baffle 193 and the other end being connected to the first limiting post 233, and the third limiting post 263 being located on the side of the second limiting post 243 away from the guide rib 144. The third limiting post 263 is used to limit the distance that the conductor rib moves toward the direction close to the cell assembly 100, which can facilitate the installation of the high voltage clamping block 104 and the output base 103.

[0086] In some embodiments, the second fixing portion 123 further includes a guide baffle 273 connected to the first limiting baffle 193, the guide baffle 273 being located on the top surface of a portion of the second main body portion 114, and the guide baffle 273 having a positioning hole; the second main body portion 114 includes a connecting post 164 located within the positioning hole, and the connecting post 164 being fixedly connected to the high-voltage output connector. The guide baffle 273 is used to restrict the movement of the high-voltage snap-fit ​​block 104 in the second direction Y during installation, thereby preventing misalignment of the high-voltage snap-fit ​​block 104 during installation. The positioning hole is used to position the connecting post 164, which is used to fixally connect to the high-voltage output connector. The positioning hole can prevent misalignment between the connecting post 164 and the high-voltage output connector, thereby improving the reliability of installation.

[0087] In some embodiments, the guide baffle 273 is provided with an observation through hole 283, which is directly opposite to the guide rib 144. The guide rib 144 can be checked through the observation through hole 283 to see whether it is installed in place, which can facilitate the judgment of the installation status of the high-voltage clamping block 104 and improve the ease of installation.

[0088] In some embodiments, on the third direction Z, the height of the second limiting space 213 is greater than or equal to the height of the high-voltage connector 104. Setting the height of the second limiting space 213 to be greater than or equal to the height of the high-voltage connector 104 facilitates installation and avoids interference between the second limiting space 213 and the high-voltage connector 104.

[0089] It is understandable that when the height of the second limiting space 213 is greater, after the high voltage connector 104 is fixed to the high voltage output connector, there is a gap between the high voltage connector 104 and the base plate 183. Since the function of the high voltage connector 104 is to fix the high voltage output connector to the external conductive busbar, the suspension of the high voltage connector 104 will not cause any negative impact. On the contrary, the presence of a certain fault tolerance space can improve the convenience of energy storage device assembly.

[0090] In some embodiments, the high-voltage connector 104 further includes a first flange 174 located on the side of the high-voltage connector 104 away from the cell assembly 100. The first flange 174 can increase the electrical creepage distance of the high-voltage output connector, thereby improving the insulation of the energy storage device.

[0091] refer to Figures 10 to 12 and combined Figure 8 , Figure 4 and Figure 3 In some embodiments, the energy storage device may further include a protective cover 105 located on the side of the high-voltage output connector away from the second fixing portion 123, thereby protecting the high-voltage output connector from damage.

[0092] In some embodiments, the protective cover 105 includes a second flange 115 disposed on the side of the protective cover 105 away from the cell assembly 100. The second flange 115 can increase the electrical creepage distance of the high-voltage output connector, thereby improving the insulation of the energy storage device.

[0093] In some embodiments, a second buckle 125 is provided on one side wall of the protective cover 105 arranged along the second direction Y, and a second slot 293 is provided at the corresponding position of the first limiting baffle 193 on the same side of the second fixing part 123. The second buckle 125 and the second slot 293 cooperate to snap the protective cover 105 and the second fixing part 123 together.

[0094] In some embodiments, the protective cover 105 is provided with a third buckle 135 on one side wall along the first direction X, and a third slot 303 is provided at the corresponding position of the third limiting baffle 253. The third buckle 135 and the third slot 303 cooperate to engage the protective cover 105 with the second fixing part 123.

[0095] In some embodiments, the second latch 125 and the third latch 135 are offset along the second direction Y, so that when the protective cover 105 is engaged with the second fixing part 123, the movement of the protective cover 105 along the second direction Y is restricted by the cooperation of the second latch 125 with the second slot 293 and the cooperation of the third latch 135 with the third slot 303.

[0096] In some embodiments, the protective cover 105 further includes a fourth limiting post 145, which is located between adjacent first limiting baffles 193. When the protective cover 105 is installed with the second fixing part 123, the fourth limiting post 145 abuts against the first limiting baffle 193 to restrict the movement of the protective cover 105 in the second direction Y.

[0097] In this embodiment, on the one hand, the output base 103 facilitates the fixed connection of the low-voltage output connector 111 of the CCS component 101 to an external conductive busbar. The output base 103 serves to support the low-voltage output connector 111. On the other hand, the output base 103 includes a first fixing part 113 and a second fixing part 123. The second fixing part 123 is used to snap on the high-voltage snap-on block 104. The high-voltage snap-on block 104 is used to fix the high-voltage output connector to the external conductive busbar. By setting the fixing method between the high-voltage snap-on block 104 and the output base 103 to be snap-on, the high-voltage snap-on block 104 can be directly disassembled separately when there is an abnormality, thereby improving the convenience of maintenance. Moreover, since the high-voltage snap-on block 104 and the output base 103 are connected by snap-on, they can be pre-assembled into a whole when the materials arrive, without affecting the installation efficiency.

[0098] Another embodiment of this disclosure also provides an electrical device, which may include the energy storage device in some or all of the above embodiments. It should be noted that the same or corresponding parts as in the above embodiments can be referred to the above embodiments, and will not be repeated below.

[0099] Electrical equipment may also include, but is not limited to, portable devices such as Bluetooth headsets, mobile phones, digital devices, and tablets, as well as large equipment such as electric motorcycles, electric vehicles, and energy storage power stations; the embodiments in this application are not limited thereto. The energy storage device provides electrical energy to the electrical equipment.

[0100] Those skilled in the art will understand that the above embodiments are specific examples of implementing this disclosure, and in practical applications, various changes in form and detail may be made without departing from the spirit and scope of the embodiments of this disclosure. Any person skilled in the art can make various modifications and alterations without departing from the spirit and scope of the embodiments of this disclosure; therefore, the scope of protection of the embodiments of this disclosure should be determined by the scope defined in the claims.

Claims

1. An energy storage device, characterized in that, include: A battery cell assembly, the battery cell assembly comprising a plurality of battery cells arranged along a first direction; The CCS assembly is fixed to the top surface of the cell assembly. The CCS assembly is provided with a low-voltage output connector and a high-voltage output connector arranged along a second direction. The low-voltage output connector is used to output the sampling signal of the cell, and the high-voltage output connector is used to output the electrical signal of the cell. End plates, the end plates being located on opposite sides of the battery cell assembly; An output base is located between the CCS assembly and the end plate, and the output base is snapped into the end plate. The output base includes: a first fixing part located between the end plate and the low-voltage output connector for supporting the low-voltage output connector; and a second fixing part located between the high-voltage output connector and the end plate. The material of the output base is an insulating material. A high-voltage snap-fit ​​block engages with the second fixed portion and is fixedly connected to the high-voltage output connector.

2. The energy storage device according to claim 1, characterized in that, The low-voltage output connector includes: a PCB board, and output connection terminals fixed to the surface of the PCB board, wherein the first fixing part includes: A first main body portion, the first main body portion being located on the end plate; The first limiting part is located on opposite sides of the first main body arranged along the second direction and protrudes from the top of the first main body. The first limiting part and the first main body form a first limiting space. The output connection terminal is located in the first limiting space and the PCB board is located on top of the first limiting part.

3. The energy storage device according to claim 2, characterized in that, The first limiting part includes a first through hole, the PCB board includes a second through hole, and the energy storage device further includes a fixing device that passes through the first through hole and the second through hole to fix the PCB board to the first limiting part.

4. The energy storage device according to claim 3, characterized in that, The first limiting part includes: a first groove, which communicates with the second through hole.

5. The energy storage device according to claim 2, characterized in that, In the second direction, the width of the first limiting portion closer to the high-voltage output connector is greater than the width of the first limiting portion farther from the high-voltage output connector.

6. The energy storage device according to claim 2, characterized in that, The first main body includes: a plurality of second groove groups arranged along a second direction, each second groove group containing at least one second groove, each second groove extending along the first direction, and the openings of a portion of the second groove groups facing the cell assembly, and the openings of a portion of the second groove groups facing away from the cell assembly.

7. The energy storage device according to claim 2, characterized in that, The end plate further includes a fixed top plate, and the first fixing part further includes: The snap-fit ​​portion is located on the side of the first main body away from the low-voltage output connector, and forms a snap-fit ​​groove with the first main body, and the fixed top plate snaps into the snap-fit ​​groove.

8. The energy storage device according to claim 1, characterized in that, The second fixed part includes: Base plate, which is located on top of the end plate; The first limiting baffle is located on opposite sides of the base plate along the second direction; A limiting top plate is spaced apart from the bottom plate. The bottom plate, the first limiting baffle, and the limiting top plate form a second limiting space, and at least a portion of the high-voltage clamping block is located within the second limiting space.

9. The energy storage device according to claim 8, characterized in that, The high-voltage connector includes: The second main body is located at least partly between the bottom plate and the limiting top plate, and the second main body is fixedly connected to the high voltage output connector. The second limiting baffle is partially connected to the second main body, partially spaced from the second main body, and located between adjacent first limiting baffles.

10. The energy storage device according to claim 9, characterized in that, The high-voltage latching block further includes a latch, which is located between the second main body and the second limiting baffle, and is connected to the second limiting baffle; The first limiting baffle is provided with a buckle engagement hole, and the buckle engages with the buckle engagement hole.

11. The energy storage device according to claim 9, characterized in that, The second fixing part also includes: The first limiting post is spaced apart from the first limiting baffle along the second direction, and the first limiting post abuts against a portion of the second main body. The second limiting post extends from the first limiting baffle toward the direction close to the first limiting post. The second limiting post and the first limiting post are spaced apart along the second direction. The second limiting post abuts against a portion of the second main body.

12. The energy storage device according to claim 11, characterized in that, The second main body also includes: A guide rib is located between the first limiting post and the second limiting post.

13. The energy storage device according to claim 9, characterized in that, The second fixing part also includes: A guide baffle is connected to the first limiting baffle. The guide baffle is located on the top surface of a portion of the second main body and has positioning holes. The second main body includes a connecting post, which is located inside the positioning hole and is fixedly connected to the high-voltage output connector.

14. The energy storage device according to claim 8, characterized in that, In the third direction, the height of the second limiting space is greater than or equal to the height of the high-voltage clamping block.

15. The energy storage device according to claim 1, characterized in that, The high-voltage connector further includes a first flange, which is located on the side of the high-voltage connector away from the battery cell assembly.

16. The energy storage device according to claim 1, characterized in that, Also includes: A protective cover is located on the side of the high-voltage output connector away from the second fixing part.

17. The energy storage device according to claim 16, characterized in that, The protective cover includes a second flange disposed on the side of the protective cover away from the battery cell assembly.

18. An electrical appliance, characterized in that, Includes the energy storage device as described in any one of claims 1 to 17.

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