WO2022205795A1

WO2022205795A1 - Battery pack, energy storage system, and electrical device

Info

Publication number: WO2022205795A1
Application number: PCT/CN2021/119153
Authority: WO
Inventors: 高永健; 林吉骏
Original assignee: 东莞新能安科技有限公司
Priority date: 2021-03-30
Filing date: 2021-09-17
Publication date: 2022-10-06
Also published as: CN113097626B; CN113097626A

Abstract

The present application discloses a battery pack. A housing of the battery pack comprises a first structural member, a second structural member, and a third structural member that are successively arranged in a first direction; a circuit board is disposed in a first accommodating groove formed in the second structural member; a connecting member (e.g. a first connecting member) passes through a second through hole of the third structural member and a first through hole of the second structural member and then is connected to the circuit board; the first structural member covers the first accommodating groove. The present application also discloses an energy storage system and an electrical device.

Description

Battery packs, energy storage systems and electrical equipment

This application claims the priority of the Chinese patent application with the application number CN202110344108.2 and the application name "Battery Pack, Energy Storage System and Electrical Equipment", which was submitted to the Chinese Patent Office on March 30, 2021, the entire contents of which are by reference Incorporated in this application.

technical field

The present application relates to the technical field of batteries, and in particular to a battery pack, an energy storage system, and electrical equipment.

Background technique

The battery pack generally includes a casing, a battery module and a circuit board. The battery module is arranged in the casing and usually includes a plurality of series or parallel batteries. In order to ensure the safe operation of the battery pack, the tabs of these batteries are It is connected to the circuit board through connecting parts (such as copper bars), and the charge and discharge are controlled by the circuit board. At present, electrical components such as circuit boards and connectors connecting each cell are exposed, which not only affects the appearance, but also is easy for operators to touch these electrical components during daily maintenance. The risk of electric shock is high and it is easy to cause personal injury.

SUMMARY OF THE INVENTION

In view of this, the present application provides a battery pack, an energy storage system and an electrical device to improve the problems of poor aesthetics and high risk of electric shock caused by exposure of electrical components.

A battery pack provided by the present application includes a casing, a battery core module, a circuit board and a first connector. The battery core module is arranged in the casing, and the battery core module includes a plurality of battery cores. The housing includes a first structural member, a second structural member and a third structural member which are arranged in sequence along the first direction, the second structural member is provided with a first receiving groove and a first through hole; the third structural member is arranged on the battery core mold The first end of the group is provided with a second through hole. The battery pack further includes a circuit board and a first connector, the circuit board is arranged in the first receiving slot, the first connector is connected to the battery module, and the first through hole is used for the first connector to pass through the first through hole The rear is connected to the circuit board; the first structural member is used to cover the first receiving groove.

The circuit board is arranged in the first receiving groove opened by the second structural member. The first connecting member passes through the second through hole of the third structural member and the first through hole of the second structural member and is connected to the circuit board. The first structure The three structural parts cooperate with each other to hide the first connector and the circuit board, improve the exposure of the electrical components, thereby improving the appearance and reducing the risk of electric shock.

Optionally, the battery pack further includes an electrode and a second connecting piece, the electrode is arranged on the side of the third structural piece away from the battery core module; the second connecting piece is connected to the battery core module and passes through the second through hole. connected to the electrodes.

Optionally, the electrode is arranged on the insulating seat, and the insulating seat is arranged on the third structural member; the second structural member is provided with a second receiving groove, and the insulating seat is located in the second receiving groove.

Optionally, the battery pack further includes a fan and a third connecting member, the first structural member further includes a third receiving groove, the fan is arranged in the third receiving groove, the bottom of the third receiving groove is provided with a first opening, and the second structure The part is provided with a second opening, and a channel is provided between the first opening and the second opening and the battery core module; the third connecting part is electrically connected to the fan and the circuit board.

The fan is arranged in the third accommodating groove, which is beneficial to the concealment of the third connecting piece. The three structural pieces cooperate with each other to hide the third connecting piece and the fan, thereby further improving the exposure of the electrical components.

Optionally, the first connector includes a first portion and a second portion. The first part is connected to one side of the cell module, and is connected to the circuit board after passing through the second through hole and the first through hole; the second part is connected to the opposite side of the cell module, the second part, the first part The opening connects the circuit board.

Optionally, the second part is at least partially disposed between the first structural member and the second structural member, and the second part is connected to the first part and then electrically connected to the circuit board through the first through hole.

Optionally, the third accommodating groove and the groove wall of the first accommodating groove are provided with a communicating third through hole, and the third connecting piece is connected to the circuit board and is connected to the fan after passing through the third through hole.

An energy storage system provided by the present application includes a plurality of battery packs according to any one of the above, the plurality of battery packs are arranged along the second direction, the energy storage system further includes a fourth connector, and the groove wall of the first receiving groove is provided with The fourth through hole, the fourth connecting member passes through the fourth through hole and connects the circuit boards of two adjacent battery packs.

The fourth connector passes through the fourth through hole and connects the circuit boards of two adjacent battery packs. A part of the fourth connecting member is hidden by the second structural member, and there is a certain distance between the fourth connecting member and the top surface of the second structural member (that is, the side facing away from the third structural member), which can Reduce the risk of electric shock to operators by touching these electrical components.

Optionally, the second structural member is provided with a third opening, and the third opening exposes the electrode; the energy storage system further includes a fifth connecting member and a fourth structural member, and the first end of the fifth connecting member is connected to the first battery pack The second end of the fifth connector is connected to the electrode of the second battery pack, the first battery pack and the second battery pack are arranged along the second direction; the fourth structural member is used to cover the third opening.

The fourth structural member is used to cover the third opening and hide the fifth connecting member, further improving the appearance of the battery pack and improving the exposure of the fifth connecting member and the electrical components such as the first electrode and the second electrode.

Optionally, the third opening is provided between the first accommodating groove and the second accommodating groove.

An electrical device provided by the present application includes a load and the energy storage system or battery pack described in any of the above, and the energy storage system or the battery pack supplies power to the load.

In the electrical equipment of the present application, the housing includes a first structural member, a second structural member and a third structural member arranged in sequence along the first direction, and the circuit board is arranged in the first receiving groove opened by the second structural member, The connecting piece (for example, the first connecting piece) is connected to the circuit board after passing through the second through hole of the third structural piece and the first through hole of the second structural piece. The first structural piece covers the first receiving groove. These three structures The parts cooperate with each other to hide the connector and the circuit board, and improve the exposure of electrical components, thereby helping to improve the appearance and reduce the risk of electric shock.

Description of drawings

1 to 3 are schematic structural diagrams of a battery pack according to an embodiment of the present application;

4 to 7 are schematic diagrams of a third structural member according to an embodiment of the present application;

8 to 11 are schematic diagrams of a second structural member according to an embodiment of the present application;

12 and 13 are schematic diagrams of a first structural member of an embodiment of the present application;

14 is a schematic structural diagram of a base according to an embodiment of the present application;

Fig. 15 is the assembly schematic diagram of the base and the third structural member shown in Fig. 14;

16 , 18 and 19 are partial structural schematic diagrams of an energy storage system according to an embodiment of the present application;

FIG. 17 is a partial enlarged schematic view of the energy storage system shown in FIG. 16 in region I.

Detailed ways

In order to make the objectives, technical solutions and advantages of the present application clearer, the technical solutions of the present application will be clearly and completely described below with reference to the embodiments and the accompanying drawings. Obviously, the described embodiments are only some, but not all, of the embodiments. Based on the embodiments in the present application, the following embodiments and their technical features can be combined with each other without conflict.

It should be understood that in the description of the embodiments of the present application, the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", " rear, left, right, vertical, horizontal, top, bottom, inside, outside, clockwise, counterclockwise, etc., or The positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, which is only for the convenience of describing the technical solutions of the corresponding embodiments of the present application and simplifying the description, rather than indicating or implying that the device or element must have a specific orientation or be constructed in a specific orientation. and operation, and therefore should not be construed as a limitation on this application.

In the embodiment of the present application, the casing of the battery pack includes a plurality of structural parts, and these structural parts cooperate with each other to hide the connecting parts and the circuit board, so as to improve the exposure of the electrical components, which is beneficial to improve the appearance aesthetics and reduce the Risk of electric shock to operators.

In specific scenarios, battery packs include, but are not limited to, all kinds of primary cells, secondary cells, fuel cells, solar cells, and capacitor (eg, supercapacitor) cells. The battery pack may preferably be a lithium secondary battery, including but not limited to lithium metal secondary batteries, lithium ion secondary batteries, lithium polymer secondary batteries, and lithium ion polymer secondary batteries. Additionally, battery packs may exist in the form of batteries, battery cells, battery modules, or battery modules.

Please refer to FIG. 1 to FIG. 15 together. The battery pack 10 according to the embodiment of the present application includes a casing 11 , a cell module 12 , a circuit board 13 and a first connector 14 .

The battery cell module 12 includes a plurality of battery cells 121 , and the battery cells 121 can be sequentially stacked in the casing 11 along the first direction x, such as the direction shown by the arrow in FIG. 2 .

These cells 121 are connected in series or in parallel. The number of the battery cells 121 can be determined according to the design requirements of the battery pack 10 , which is not limited herein. These cells 121 include, but are not limited to, soft-wrapped cells, and some descriptions herein take a single cell 121 as an example for illustration.

The case 11 may form the shape of the battery pack 10 and define the appearance of the battery pack 10 . The internal components of the battery pack 10 (eg, the cell module 12 ) are arranged in the casing 11 , and the casing 11 is used to protect the internal components to ensure the protection effect and safety of the battery pack 10 .

As shown in FIGS. 1 and 2 , the housing 11 includes a first structural member 21 , a second structural member 22 and a third structural member 23 arranged in sequence along the first direction x. Along the first direction x, the cell assembly 12 includes On the first side and the second side disposed opposite to each other, the first structural member 21 , the second structural member 22 and the third structural member 23 are disposed on the first side of the cell module 12 .

The third structural member 23 is provided with a second through hole 23a. In some scenarios, the third structural member 23 is a substantially flat sheet metal part, which can not only better cover the first side of the cell module 12 , but also has a larger contact area with the first side of the cell module 12 . If the thickness of the third structural member 23 is small, the size of the battery pack 10 in the first direction x can be reduced.

In some scenarios, the second structural member 22 is fixed on the third structural member 23, for example, the second structural member 22 is provided with a plurality of screw holes 22a, the third structural member 23 is provided with a plurality of through holes 23b, and the screw holes 22a are provided The number of the through holes 23b is equal and the positions are in one-to-one correspondence. The bolts are inserted into the aligned screw holes 22a and the through holes 23b, and the second structural member 22 and the third structural member 23 are fixed by screwing. It should be understood that the number and positions of the screw holes 22a and the through holes 23b are not limited in the embodiments of the present application, and the four screw holes 22a and the four through holes 23b shown in the figure are only exemplary.

Optionally, the third structural member 23 may be provided with two handles 231, along the third direction z, the third direction z may be perpendicular to the plane where the first direction x and the second direction y are located, and the two handles 231 are respectively provided on the third direction z. Both ends of the three structural members 23 . The handle 231 can be easily held by the operator, which is convenient for handling and transportation. Optionally, the handle 231 facilitates the disassembly and separation of the third structural member 23 and the components (eg, the second structural member 22 ) mounted thereon from the cell module 12 .

8 to 11 together, the second structural member 22 is provided with a first receiving groove 22b and a first through hole 22c. The opening of the first accommodating groove 22b faces away from the cell module 12 . The first through hole 22c may be opened on the first groove wall 221 of the first receiving groove 22b, and the first through hole 22c communicates with the first receiving groove 22b.

The circuit board 13 is disposed in the first accommodating groove 22b, and is fixed to the bottom of the first accommodating groove 22b by screwing, for example. The function of the circuit board 13 can be determined according to requirements. For example, in some scenarios, the circuit board 13 is a BMS (Battery management system, battery management system) circuit board, which performs charge and discharge control of the battery cell module 12 and sampling of parameters such as voltage and current.

The first connecting member 14 is connected to the cell module 12 , passes through the second through hole 23 a and the first through hole 22 c in sequence, and is connected to the circuit board 13 . In some scenarios, the first connector 14 may be a wire harness connecting the cell module 12 and the circuit board 13

In some instances, as shown in FIGS. 3 and 15 , the first connector 14 may include a first portion 141 and a second portion 142 along a second direction y, which may be perpendicular to the first direction x, electrically The core module 12 includes a third side and a fourth side disposed opposite to each other, and the third side and the fourth side are respectively connected between the first side and the second side. The first part 141 is connected to the third side of the cell module 12, and is connected to the circuit board 13 after passing through the second through hole 23a and the first through hole 22c in sequence. The second portion 142 is connected to the fourth side of the cell module. The second portion 142 passes through the second opening 23c and is disposed on the side of the third structural member 23 away from the cell module 12 . Preferably, the second part 142 is connected to the electrical connection of the first part 141 to the circuit board 13 . In one embodiment, the second portion 142 is fixed to the third mechanism member 23, for example, the third mechanism member 23 is provided with a slot, and the second portion 142 is arranged in the slot, for example, the second portion 142 is fixed to the The third mechanism member 23 . The second portion 142 is disposed between the third structural member 23 and the bottom wall 22u of the first receiving groove 22b. The second portion 142 extends out of the bottom wall 22u and is connected to the first portion 141, where the first portion 141 and the second portion 142 are connected. It is provided outside the first through hole 22c. Specifically, the connection between the first portion 141 and the second portion 142 is provided on one side of the first groove wall 221, and the first receiving groove 22b is provided on the opposite side of the first groove wall 221. side. The second part 141 is electrically connected to the circuit board 30 through the first part 141, which is beneficial to reduce the space occupied by the wire harness.

In other examples, the first part 141 and the second part 142 may both be connected to the same side of the cell module 12, for example, connected to the third side of the cell module 12, and pass through the second through holes 23a and The circuit board 13 is connected to the first through hole 22c.

Further optionally, the second part 142 can be fixed on the side surface of the third structural member 23 facing the second structural member 22 , the positioning of the second part 142 can be realized, and the second structural member 22 and the third structural member 23 After assembly, the second structural member 22 may cover and conceal the second portion 142, improving the exposure of the electrical component of the second portion 142.

As shown in FIG. 1 to FIG. 3 , the first structural member 21 covers the first receiving groove 22 b , so that the circuit board 13 is hidden in the first receiving groove 22 b to reduce the risk of exposure of the circuit board 13 .

In some examples, as shown in FIGS. 8 , 12 and 13 , the first structural member 21 may be provided with a first snap 211 and a second snap 222 , and the second structural member 22 may be provided with a first snap groove 22e and The second slot 22f and the first slot 22e may be disposed on the first slot wall 221 , and the second slot 22f may be disposed on the second slot wall 222 . The first groove wall 221 and the second groove wall 222 are disposed opposite to each other. Here, the first groove wall 221 and the second locking groove 22f are disposed opposite to each other. The second buckle 222 is disposed in the second slot 22f to limit the position of the first structural member 21 relative to the second structural member 22, which is beneficial to the engagement of the first buckle 211 and the first slot 22e, so that the A structural member 21 covers the first receiving groove 22b and is fixed with the second structural member 22 . Further, by separating the first buckle 211 from the first slot 22e, the first structural member 21 can be taken out from the first receiving slot 22b, thereby exposing the circuit board 13, which is convenient for maintenance or replacement of the circuit board 13.

Viewed along the first direction x, the first structural member 21 , the second structural member 22 and the third structural member 23 hide the cell module 12 , the first connecting member 14 and the circuit board 13 to improve the exposure of these electrical components, thereby The appearance aesthetics of the battery pack 10 can be improved, and the risk of electric shock for the operator due to contact with these electrical components can be reduced in the routine repair and maintenance process.

In some scenarios, as shown in FIG. 3 , the casing 11 further includes an upper casing 111 , a lower casing 112 and a rear casing 113 . Along the first direction x, the rear casing 113 covers the second side of the cell module 12 and is connected with the aforementioned The three structural members are arranged relative to each other. The upper shell 111 can cover the fourth side and the top of the cell module 12 , the lower shell 112 can cover the third side and the bottom of the cell module 12 , and the bottom and the top are oppositely disposed along the second direction y. Here, all sides of the battery module 12 can be covered, which further improves the aesthetic appearance of the battery pack 10 and improves the exposure of electrical components.

Please continue to refer to FIGS. 1 to 3 , the battery pack 10 further includes an electrode and a second connecting member 16 . The electrodes are disposed on the third structural member 23, and the second connecting member 16 is connected to the cell module 12, and is connected to the electrodes after passing through the second through holes 23a.

According to the design of the battery pack 10 generally having positive and negative polarities, the tabs of the battery cells 121 include a positive tab and a negative tab. Suitably, the second connector 16 may include a positive connector and a negative connector, and the positive connector is connected to the positive electrode The ear, the negative connector is connected to the negative ear, for example, it can be connected by welding. In some practical scenarios, the second connector 16 may be a copper bar, the positive connector is a positive copper bar, and the negative connector is a negative copper bar. The electrodes include a first electrode 151 and a second electrode 152. The first electrode 151 can be a positive electrode and is connected to the positive tab, and the second electrode 152 can be a negative electrode and is connected to the negative tab.

The first electrode 151 and the second electrode 152 can be disposed on an insulating seat 17 , and the insulating seat 17 is fixed on the third structural member 23 , thereby fixing the first electrode 151 and the second electrode 152 on the third structural member 23 , so that the two electrodes remain fixed in position. It should be understood that the structure and material of the insulating seat 17 are not limited by the embodiments of the present application, and the structures shown in FIG. 14 and FIG. 15 are only exemplary representations and do not constitute a limitation to the structure thereof. For example, in some instances, the insulating seat 17 may cover a portion of the first electrode 151 and the second electrode 152, exposing only the two ends of each electrode, to facilitate the exposed ends and other components (eg, the second connector 16) connections, thereby further improving the exposure of electrical components.

In some scenarios, the insulating base 172 is provided with a slot, and the first part 141 is at least partially arranged in the slot, which is beneficial to fix the first part 141 and facilitate product assembly.

In some scenarios, a gap 153 is provided between the insulating seat 17 and the first groove wall 221 , and the gap 153 is used for the second part 142 to extend beyond the bottom wall 22u to connect to the first part 141 .

The second structural member 22 is further provided with a second accommodating groove 22g, and the opening direction of the second accommodating groove 22g faces the insulating seat 17 . After the second structural member 22 and the third structural member 23 are assembled, the insulating seat 17 is disposed in the second receiving groove 22g, so as to reduce the risk of exposure of electrical components such as connecting members (eg, the second connecting member 16 ) connected to the insulating seat 17 . .

Please continue to refer to FIG. 1 to FIG. 3 and FIG. 18 , the battery pack 10 further includes a fan 171 and a third connecting member 172 . The second structural member 22 further includes a third receiving groove 22h, the first opening 22d is opened at the bottom of the third receiving groove 22h, and a channel is provided between the first opening 22d and the second opening 23c and the cell module 12, for example Along the first direction x, the first opening 22d and the second opening 23c at least partially overlap. The fan 171 is arranged in the third receiving slot 22h, and the fan 171 is communicated with the channel, so that the heat generated by the battery module 12 during operation can be discharged to the outside through the channel and the fan 171, which is beneficial to the timely and fast operation of the battery module 12. heat dissipation.

The third connector 172 electrically connects the fan 171 and the circuit board 13, so that the circuit board 13 can control the operation of the fan 171, including starting, stopping and rotating speed. For example, when the temperature of the cell module 12 is monitored to be high, the circuit board 13 controls the fan 171 to start up, and if the temperature continues to rise, the circuit board 13 controls the rotation speed of the fan 171 to increase, and when the cell module is monitored When the temperature of 12 decreases, the rotation speed of the fan 171 can be controlled to decrease or stop.

In an example, the second structural member 22 may be provided with a third through hole 22j, and the third connecting member 172 passes through the third through hole 22j and is connected to the fan 171 to hide the third connecting member 172 . As shown in FIGS. 8 and 9 , the third accommodating groove 22h and the first accommodating groove 22b are disposed adjacent to each other, and both share the second groove wall 222 , and the third through hole 22j may be provided in the second groove wall 222 .

The battery pack 10 of the embodiment of the present application can also be combined to form an energy storage system. As shown in FIGS. 16 to 19 , an embodiment of the present application provides an energy storage system 20 . The energy storage system 20 includes a plurality of battery packs 10 , and the plurality of battery packs 10 are arranged along the second direction y. These battery packs 10 can be connected in series and used as a whole for charging and powering various loads. For convenience of description and distinction, throughout the present application, along the second direction y, the upper battery pack 10 is referred to as the first battery pack 10a, and the lower battery pack 10 is referred to as the second battery pack 10b.

The energy storage system 20 further includes a fourth connector 18, and a fourth through hole 22n is formed on the groove wall of the first receiving groove 22b. For example, the third groove wall 223 and the fourth groove wall 224 of the first receiving groove 22b are respectively provided with The fourth through hole 22n. Preferably, the two fourth through holes 22n may be aligned along the second direction y, which facilitates the connection of the fourth connector 18 when the battery pack 10 is installed. Preferably, a plurality of battery packs 10 are stacked along the second direction y.

Optionally, as shown in FIGS. 12 and 13 , the first structural member 21 may be provided with a protruding portion 213 , the protruding portion 213 is provided with a slot 213 a , and the fourth connecting member 18 is accommodated after passing through the fourth through hole 22 n In the card slot 213a, the position limit of the fourth connecting member 18 is realized.

The fourth connecting member 18 passes through the fourth through hole 22n and connects the circuit boards 13 of two adjacent battery packs 10 . A part of the fourth connecting member 18 is covered by the second structural member 22 to be hidden, and between the fourth connecting member 18 and the top surface of the second structural member 22 (ie the side facing away from the third structural member 23 ) With a certain distance, it can reduce the risk of electric shock to the operator by touching these electrical components.

Please continue to refer to FIG. 9 , the second structural member 22 further defines a third opening 22k , and the third opening 22k exposes the first electrode 151 and the second electrode 152 of the base 15 .

In some examples, the third opening 22k may be disposed between the first receiving groove 22b and the second receiving groove 22g, and the second structural member 22 is provided with a recessed area 22s between the first receiving groove 22b and the second receiving groove 22g , the recessed area 22s is arranged in the opposite direction to the first direction x,

The recessed area 22s and the second receiving groove 22g are separated by the first groove wall 221, and the recessed area 22s and the second receiving groove 22g are also separated by the groove wall of the second receiving groove 22g, which can reduce the operator's contact with the second receiving groove 22g. Risk of electric shock from the first electrode 151 and the second electrode 152.

The energy storage system 20 also includes a fifth connection member 19 and a fourth structural member 24 . One end of the fifth connector 19 is connected to the second electrode 152 (eg, the negative electrode) of the first battery pack 10a, and the other end of the fifth connector 19 is connected to the first electrode 151 (eg, the negative electrode) of the second battery pack 10b. positive electrode), so that the adjacent first battery pack 10a and the second battery pack 10b are connected in series. According to this connection method, a plurality of battery packs 10 are connected in series, which can be used to supply power to the load.

The fourth structural member 24 is used to cover the third opening 22k, hide the fifth connecting member 19, further improve the appearance of the battery pack 10, and improve the electrical properties of the fifth connecting member 19 and the first electrode 151 and the second electrode 152. exposure of components.

In some examples, the fourth structural member 24 and the second structural member 22 can be detachably assembled by means of snapping, so as to cover the third opening 22k.

It should be understood that the shapes of the first structural member 21 , the second structural member 22 , the third structural member 23 and the fourth structural member 24 are not limited in the present application, and the shapes shown in FIGS. 1 to 18 are merely exemplary.

Yet another embodiment of the present application provides an electrical device, including a load and the battery pack 10 of any of the foregoing embodiments, where the battery pack 10 supplies power to the load. Alternatively, the electrical equipment includes a load and the energy storage system 20 in any of the foregoing embodiments, and the energy storage system 20 supplies power to the load.

Electrical equipment can be implemented in various specific forms, such as drones, electric vehicles, electric cleaning tools, energy storage products, electric vehicles, electric bicycles, electric navigation tools and other electronic products. In practical scenarios, electrical equipment specifically includes, but is not limited to, backup power supplies, motors, automobiles, motorcycles, power-assisted bicycles, bicycle power tools, large household batteries, and lithium-ion capacitors.

It can be understood by those skilled in the art that, in addition to elements specially used for moving purposes, the configurations according to the embodiments of the present application can also be applied to stationary type electrical devices.

Since the electrical equipment has the battery pack 10 or the energy storage system 20 of any of the foregoing embodiments, the electrical equipment can produce the beneficial effects of the corresponding embodiments.

The above descriptions are only part of the embodiments of the present application, which are not intended to limit the scope of the patent of the present application. All equivalent structural transformations made by using the contents of the description and the accompanying drawings are similarly included in the scope of patent protection of the present application.

Without further limitation, an element defined by the phrase "comprises a..." does not preclude the presence of additional identical elements in a process, method, article, or device that includes the element, and further, in different embodiments Components, features and elements with the same name may have the same meaning or may have different meanings, and their specific meanings need to be determined by their explanations in this specific embodiment or further combined with the context in this specific embodiment.

Additionally, although the terms "first, second, third," etc. are used herein to describe various information, such information should not be limited by these terms. These terms are only used to distinguish the same type of information from each other. As used herein, the singular forms "a," "an," and "the" are intended to include the plural forms as well. The terms "or" and "and/or" are to be construed to be inclusive or to mean any one or any combination. Exceptions to this definition arise only when combinations of elements, functions, steps, or operations are inherently mutually exclusive in some way.

Claims

A battery pack includes a casing and a battery core module arranged in the casing, wherein the battery core module includes a plurality of battery cores, wherein:

The housing includes a first structural member, a second structural member and a third structural member arranged in sequence along the first direction, the second structural member is provided with a first receiving groove and a first through hole; the third structure The component is arranged on the first end of the battery core module, and is provided with a second through hole;

The battery pack further includes a circuit board and a first connector, the circuit board is arranged in the first receiving slot, the first connector is connected to the battery module, and the first through hole is used for The first connecting member is connected to the circuit board after passing through the first through hole; the first structural member is used to cover the first receiving groove.
The battery pack according to claim 1, wherein the battery pack further comprises an electrode and a second connection member, the electrode is provided on a side of the third structural member away from the cell module; the second connection The component is connected to the battery core module, and is connected to the electrode after passing through the second through hole.
The battery pack according to claim 2, wherein the electrode is arranged on an insulating seat, and the insulating seat is arranged on the third structural member; the second structural member is provided with a second receiving groove, and the insulating seat is The seat is located in the second receiving groove.
The battery pack according to claim 1, wherein the battery pack further comprises a fan and a third connecting member, the first structural member further comprises a third receiving groove,

The fan is arranged in the third receiving groove, the bottom of the third receiving groove is provided with a first opening, the second structural member is provided with a second opening, and the first opening and the second opening are the same as the other openings. Channels are arranged between the battery modules; the third connector is electrically connected to the fan and the circuit board.
The battery pack of claim 4, wherein the first connector includes a first portion and a second portion;

The first part is connected to one side of the battery core module, and is connected to the circuit board after passing through the second through hole and the first through hole; the second part is connected to the battery core module On the opposite side, the second portion and the first opening are connected to the circuit board.
The battery pack of claim 5, wherein the second portion is at least partially disposed between the first structural member and the second structural member, and the second portion passes through the first passage after being connected to the first portion The holes are electrically connected to the circuit board.
The battery pack according to claim 4, wherein the third receiving groove and the groove wall of the first receiving groove are provided with a third through hole that communicates with each other, and the third connecting member is connected to the circuit board and The fan is connected after passing through the third through hole.
An energy storage system, comprising a plurality of battery packs according to any one of claims 1 to 7, the plurality of battery packs being arranged along a second direction,

The energy storage system further includes a fourth connecting piece, the groove wall of the first receiving slot is provided with a fourth through hole, and the fourth connecting piece passes through the fourth through hole and connects two adjacent said the circuit board of the battery pack.
The energy storage system of claim 8, wherein the second structural member is provided with a third opening, the third opening exposing the electrode;

The energy storage system further includes a fifth connector and a fourth structure, the first end of the fifth connector is connected to the electrode of the first battery pack, and the second end of the fifth connector connected to the electrode of the second battery pack, the first battery pack and the second battery pack are arranged along the second direction; the fourth structural member is used to cover the third opening.
The energy storage system according to claim 9, wherein the third opening is provided between the first receiving groove and the second receiving groove.
An electrical device comprising a load and the energy storage system according to any one of claims 8 to 10 or the battery pack according to any one of claims 1 to 7, the energy storage system or the battery pack supply power to the load.