Battery pack and electric equipment

Abstract

The utility model provides a battery pack and electric equipment. The battery pack comprises a battery monomer, a box body, a circuit board and an output terminal. The battery monomer comprises a pole; the battery monomers are arranged in the box body; the box body comprises an outer box body and an inner box body, the front side of the outer box body is opened to form an inner box body mounting port, the inner box body is mounted in the outer box body from the inner box body mounting port in a drawable manner along the front-back direction, the upper side of the inner box body is opened to form a battery mounting port, and the single batteries are mounted in the inner box body through the battery mounting port; the circuit board is electrically connected with the pole and is arranged at the side part of the box body; the output terminal is installed on the side portion of the box body and comprises an output pole interface, the output pole interface is electrically connected with the pole column through the circuit board, and the output end of the output pole interface is exposed outside the side portion of the box body through an output end opening in the box body. The electric equipment comprises the battery pack.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of batteries, in particular to a battery pack and an electric device. BACKGROUND

[0002] In order to match the structural design of the existing electric device, the battery pack needs to be provided with an output terminal, and the output end of the output terminal is exposed to realize power supply for the related electric device. In the battery pack of the related art, taking a low-voltage battery pack of a vehicle as an example (including 12V, 24V, 48V, etc. battery pack), the low-voltage battery pack is mainly responsible for vehicle low-voltage power supply, vehicle starting, brake energy recovery, automatic start-stop, etc. The low-voltage battery pack includes a box body, a battery monomer, an isolation plate, a gasket, a circuit board (such as a PCBA board), and an output terminal, etc. The box body is divided into an upper box body and a lower box body. The battery monomer is arranged in the lower box body, and the isolation plate, the gasket, and the upper box body are sequentially arranged above the battery monomer. The upper box body and the lower box body are connected in a sealed manner by a sealing ring and a bolt.

[0003] The above statements are only used to provide background information related to the present application, and do not necessarily constitute the prior art. CONTENT OF THE UTILITY MODEL

[0004] The purpose of the present application is to provide a battery pack and an electric device, which aims to save the space of the battery pack in the height direction of the electric device.

[0005] The first aspect of the present application provides a battery pack, comprising: a battery monomer comprising a pole; a box body, the battery monomer is arranged in the box body, the box body comprises an outer box body and an inner box body, the front side of the outer box body is open to form an inner box body mounting port, the inner box body is pullably mounted in the outer box body along the front-rear direction from the inner box body mounting port, the upper side of the inner box body is open to form a battery mounting port, and the battery monomer is mounted in the inner box body through the battery mounting port; a circuit board, which is electrically connected with the pole and is mounted on the side of the box body; and an output terminal, which is mounted on the side of the box body and comprises an output pole interface, the output pole interface is electrically connected with the pole through the circuit board, and the output end of the output pole interface is exposed outside the side of the box body through an output end opening on the box body.

[0006] In the battery pack of the embodiments of the present application, the circuit board and the output terminal are both mounted on the side of the battery pack, the output end of the output terminal interface is exposed outside the side of the box through the output end opening on the box, which is conducive to saving the space in the height direction of the battery pack, thereby also saving the space in the height direction of the electric equipment such as an electric vehicle as a whole, and the space in the height direction of the electric equipment occupied by the battery pack can be partially released, thereby facilitating the reasonable arrangement of various related components around the battery pack in the electric equipment. The box is divided into an outer box and a drawable inner box, which optimizes the structural strength of the battery pack, enhances the extrusion resistance, vibration resistance and impact resistance of the battery pack, effectively prevents the battery pack from being damaged due to strong vibration, and further reduces the safety risk of the battery pack. The inner box can be drawn from the outer box after being disassembled, which is convenient for maintenance and replacement of battery monomers or other parts, and is conducive to reducing the maintenance difficulty and cost of the battery pack.

[0007] In the battery pack in some embodiments, the output end opening is provided on the rear side wall of the outer box; the circuit board is mounted between the rear side wall of the outer box and the rear side wall of the inner box; and the output terminal is mounted between the rear side of the circuit board and the rear side wall of the outer box.

[0008] The circuit board and the battery monomer can be physically isolated by the rear side wall of the inner box, reducing the interference and influence between the circuit board and the battery monomer. The output terminal is mounted between the rear side of the circuit board and the rear side wall of the outer box, which is conducive to preventing damage to the circuit board and the output terminal when the battery pack is assembled, and is conducive to protecting the circuit board and the output terminal after the battery pack is assembled.

[0009] In the battery pack in some embodiments, the circuit board is fixedly connected to the rear side wall of the inner box; and / or the rear side wall of the inner box is provided with a circuit board limiting structure configured to limit the relative position of the circuit board and the inner box in at least one direction; and / or the outer box includes an output terminal mounting groove provided inside the rear side wall of the outer box and communicating with the output end opening, and the output terminal is embedded in the output terminal mounting groove; and / or the output end of the output terminal extends to the outside of the rear of the outer box from the output end opening; and / or the front end of the inner box further includes an ear plate.

[0010] The circuit board is fixedly connected to the rear side wall of the inner box, which is conducive to reducing the relative displacement of the circuit board from the inner box due to vibration, and is conducive to forming a stable electrical connection between the circuit board and the battery monomer, thereby facilitating the continuous and stable operation of the battery pack.

[0011] The rear side wall of the inner box body is provided with a circuit board limiting structure. The circuit board limiting structure limits and constrains the circuit board relative to the inner box body in at least one direction, which is beneficial to quickly position the relative position of the circuit board and the inner box body, thereby facilitating the quick assembly of the circuit board and the inner box body and the battery cell, and reducing the risk of misalignment between the circuit board and the inner box body, and stably maintaining the electrical connection between the circuit board and the pole column of the battery cell, thereby facilitating the continuous and stable operation of the battery pack.

[0012] The outer box body is provided with an output terminal mounting groove in communication with the output opening. The output terminal is embedded in the output terminal mounting groove, which is beneficial to the quick positioning and installation of the output terminal relative to the outer box body, and also reduces the space occupied by the output terminal in the front-rear direction, thereby reducing the overall occupied space of the battery pack.

[0013] The output terminal extends from the output opening to the outside of the rear of the outer box body, which is beneficial to the quick and accurate and stable electrical connection between the battery pack and the electrical device supplied by it, and is beneficial to the continuous and stable power supply of the battery pack to the electrical device electrically connected with the output pole interface.

[0014] The front end outside of the inner box body is provided with an ear plate, which is beneficial to the forward and backward pulling of the inner box body in the outer box body, thereby facilitating the assembly and maintenance of the battery pack.

[0015] In some embodiments of the battery pack, the top end of the circuit board is provided with two electrode connection ends extending forward on the left and right sides, respectively, and the two electrode connection ends are electrically connected with the positive pole column and the negative pole column in the pole column, respectively; and / or the circuit board limiting structure includes a positioning boss arranged at the bottom of the rear side wall of the inner box body, and the circuit board is arranged on the positioning boss; and / or the output terminal is fixedly connected to the outer box body and the circuit board by the same group of bolts extending into the outer box body from the outside of the outer box body; and / or the output terminal further includes a base plate, and the output pole interface is connected to the rear side of the base plate, and the base plate is embedded in the output terminal mounting groove and cooperates with the shape of the output terminal mounting groove; and / or the output pole interface cooperates with the shape of the output opening; and / or the ear plate is provided with a through hole, and / or the plate surface of the ear plate is perpendicular to the up-down direction.

[0016] The top end of the circuit board is provided with two electrode connection ends extending forward on the left and right sides, respectively, and the two electrode connection ends are electrically connected with the positive pole column and the negative pole column in the pole column, respectively, which is beneficial to setting a sufficient safety distance between the positive pole and the negative pole of the battery pack, reducing the risk of short circuit between the positive pole and the negative pole due to impact, vibration, etc., and improving the safety performance of the battery pack during operation.

[0017] The circuit board limiting structure comprises a positioning boss arranged at the bottom of the rear side wall of the inner box body, which supports the circuit board, facilitates quick positioning and installation of the circuit board, reduces the possibility of relative movement of the circuit board and the inner box body in the up-down direction during operation of the battery pack, and facilitates stable electrical connection between the circuit board and the battery cells. The arrangement of the positioning boss also facilitates protection of the circuit board during assembly of the battery pack, preventing damage caused by bumps between the circuit board and the outer box body.

[0018] The output terminal, the outer box body and the circuit board are fixedly connected by the same set of bolts, which facilitates improvement of the connection stability of the circuit board and the output terminal relative to the inner box body and the outer box body, enables more stable electrical connection of the circuit board, the output terminal and the battery cells, and facilitates continuous and stable operation of the battery pack.

[0019] The substrate is embedded in the output terminal mounting groove and cooperates with the shape of the output terminal mounting groove, which facilitates quick and accurate positioning and cooperation of the output terminal and the outer box body, facilitates installation of the output terminal on the outer box body, and also facilitates quick and accurate positioning and cooperation of the output terminal opening and the output terminal interface.

[0020] The ear plate is provided with a through hole and / or the plate surface of the ear plate is perpendicular to the up-down direction, which facilitates pulling out of the inner box body by the operator.

[0021] In the battery pack in some embodiments, one of the first guide structure and the second guide structure comprises a guide groove extending in the front-rear direction, and the other of the first guide structure and the second guide structure comprises a guide rail extending in the front-rear direction and slidingly cooperating with the guide groove; and / or one of the first guide structure and the second guide structure is arranged on the inner side of the bottom wall of the outer box body, and the other of the first guide structure and the second guide structure is arranged on the outer side of the bottom wall of the inner box body.

[0022] The guide groove and the guide rail form a sliding pair, which facilitates more stable movement of the inner box body relative to the outer box body in the front-rear direction, facilitates stable installation of the inner box body in the outer box body or removal of the inner box body from the outer box body, and also facilitates more effective restriction of the left-right direction deviation of the inner box body relative to the outer box body due to vibration and impact, and facilitates further improvement of the overall structural strength of the box body.

[0023] One of the first guide structure and the second guide structure is arranged on the inner side of the bottom wall of the outer box body, and the other of the first guide structure and the second guide structure is arranged on the outer side of the bottom wall of the inner box body, which facilitates stable cooperation of the first guide structure and the second guide structure during movement of the inner box body relative to the outer box body, and facilitates quick assembly of the inner box body and the outer box body.

[0024] In the battery pack in some embodiments, the outer box body forms a first mounting stopper at the inner box body mounting port, and the front end of the inner box body forms a second mounting stopper cooperating with the first mounting stopper; and / or the connection between the outer box body and the inner box body is sealingly connected by welding.

[0025] The first mounting stop and the second mounting stop are matched, which is beneficial to enhance the overall structural strength of the box body and improve the sealing performance of the outer box body and the inner box body after installation.

[0026] The connecting part of the outer box body and the inner box body is sealed and connected by welding, which is low in cost and good in sealing effect, and is also beneficial to further enhance the overall structural strength of the box body.

[0027] In the battery pack in some embodiments, an insulation plate is further included, and the insulation plate is located between the battery monomer and the inner box body.

[0028] The insulation plate is arranged to isolate the battery monomer and the inner box body, which is beneficial to reduce the possibility of electric leakage through the inner box body.

[0029] In the battery pack in some embodiments, a buffer pad is further included, and the buffer pad is arranged between the battery monomer and the insulation plate.

[0030] The buffer pad is arranged, which is beneficial to reduce the impact of vibration on the battery monomer and reduce the bumping of the battery monomer during installation.

[0031] In the battery pack in some embodiments, a horizontal cross section of the insulation plate is U-shaped, including a main plate body and two wing plates respectively connected to left and right ends of the main plate body, the main plate body is located between the battery monomer and the inner box body, the buffer pad is arranged between the battery monomer and the main plate body, and the two wing plates are respectively arranged between the battery monomer and the inner box body.

[0032] The horizontal cross section of the insulation plate is U-shaped, which is beneficial to better isolate the battery monomer and the inner box body and more effectively reduce the possibility of electric leakage through the inner box body.

[0033] In the battery pack in some embodiments, a plurality of battery monomers are included, a plurality of bus bars are included, each bus bar is electrically connected to the plurality of battery monomers by connecting to the pole column, an isolation plate is arranged on the top of the plurality of battery monomers, and includes a plurality of pole column mounting slots with downward notches corresponding to each pole column of the plurality of battery monomers, a slot hole is arranged on the bottom wall of each pole column mounting slot, each pole column is located in the corresponding pole column mounting slot, the notch edge of the pole column mounting slot is located inside the top surface edge of the battery monomer where the corresponding pole column is located, the slot hole is located on the top of the corresponding pole column, and the edge of the slot hole is located inside the top surface edge of the corresponding pole column. The plurality of bus bars are arranged on the top of the isolation plate, and each bus bar is welded to the pole column connected thereto through the slot hole.

[0034] In the battery pack of the embodiments of the present application, the isolation plate comprises a plurality of pole post mounting slots with downward notches corresponding to the pole posts of the plurality of battery monomers, a slot hole is arranged on the bottom wall of each pole post mounting slot, each pole post is located in the corresponding pole post mounting slot, the notch edge of the pole post mounting slot is located inside the top surface edge of the battery monomer where the corresponding pole post is located, the slot hole is located on the top of the corresponding pole post, and the edge of the slot hole is located inside the top surface edge of the corresponding pole post. When each tab is welded with the pole post connected thereto through the slot hole, the particulate matter generated can generally be limited in the slot hole and the top of the corresponding pole post. Even if a small amount of particulate matter enters the pole post mounting slot through the gap between the slot hole and the pole post, it will also be limited in the pole post mounting slot and on the top surface of the battery monomer, and will not basically enter the gap between the adjacent battery monomers, thereby facilitating the prevention of particulate matter from entering the gap between the adjacent battery monomers, reducing the possibility of particulate matter piercing the blue film between the battery monomers, and thereby reducing the safety risk caused by the piercing of the blue film.

[0035] In the battery pack in some embodiments, the pole post is shape-fitted with the corresponding pole post mounting slot; and / or the top surface of the pole post is flush with the lower surface of the bottom wall of the corresponding pole post mounting slot; and / or the lower surface outside the notch of the pole post mounting slot of the isolation plate is flush with the top surface of the battery monomer.

[0036] The shape-fitting of the pole post with the pole post mounting slot facilitates minimizing or eliminating the gap between the pole post and the pole post mounting slot, preventing particulate matter from entering the gap between the adjacent battery monomers through the gap between the pole post and the pole post mounting slot, thereby reducing the possibility of particulate matter piercing the blue film between the battery monomers, and further reducing the safety risk caused by the piercing of the blue film.

[0037] The top surface of the pole post is flush with the lower surface of the bottom wall of the corresponding pole post mounting slot, which facilitates minimizing or eliminating the gap between the top surface of the pole post and the lower surface of the bottom wall of the corresponding pole post mounting slot, preventing particulate matter from entering the gap between the adjacent battery monomers through the gap between the top surface of the pole post and the lower surface of the bottom wall of the corresponding pole post mounting slot, thereby reducing the possibility of particulate matter piercing the blue film between the battery monomers, and further reducing the safety risk caused by the piercing of the blue film.

[0038] The lower surface outside the notch of the pole post mounting slot of the isolation plate is flush with the top surface of the battery monomer, which facilitates minimizing or eliminating the gap between the lower surface outside the notch of the pole post mounting slot of the isolation plate and the top surface of the battery monomer, preventing particulate matter from entering the gap between the adjacent battery monomers through the gap between the lower surface outside the notch of the pole post mounting slot of the isolation plate and the top surface of the battery monomer, thereby reducing the possibility of particulate matter piercing the blue film between the battery monomers, and further reducing the safety risk caused by the piercing of the blue film.

[0039] In the battery pack in some embodiments, the tab includes a tab body and a protrusion protruding downward relative to the tab body, the tab body is located on the upper surface of the bottom wall of the pole mounting slot, and the protrusion is configured to extend into the slot hole and be welded with the pole.

[0040] By connecting the protrusion with the pole, the welding of the pole and the tab is facilitated, and the welding particles are also facilitated to be limited in the slot hole and on the top surface of the pole, thereby preventing the particles from entering the gap between adjacent battery monomers, reducing the possibility of the particles piercing the blue film between the battery monomers, and further reducing the safety risk caused by the piercing of the blue film.

[0041] In the battery pack in some embodiments, the protrusion is shaped to fit the slot hole; and / or the bottom surface of the protrusion is attached to the top surface of the pole; and / or the lower surface of the tab outside the protrusion is attached to the upper surface of the bottom wall of the pole mounting slot.

[0042] The shape of the protrusion fitting the slot hole facilitates the accurate positioning of the tab and the corresponding pole, so that the welding position between the tab and the pole is accurate, and further facilitates the limitation of welding particles in the slot hole and on the top surface of the pole, effectively preventing the particles from entering the gap between adjacent battery monomers, thereby reducing the possibility of the particles piercing the blue film between the battery monomers, and further reducing the safety risk caused by the piercing of the blue film.

[0043] The attachment of the bottom surface of the protrusion to the top surface of the pole facilitates the smooth completion of the welding of the tab and the pole, reduces the welding time, and reduces the generation of welding particles during welding, thereby facilitating the reduction of the possibility of the particles entering the gap between adjacent battery monomers to pierce the blue film between the battery monomers, and further reducing the safety risk caused by the piercing of the blue film.

[0044] The attachment of the lower surface of the tab outside the protrusion to the upper surface of the bottom wall of the pole mounting slot facilitates the reduction of the particles entering the slot hole from the gap between the lower surface of the tab outside the protrusion and the upper surface of the bottom wall of the pole mounting slot during welding, thereby facilitating the reduction of the possibility of the particles entering the gap between adjacent battery monomers to pierce the blue film between the battery monomers, and further reducing the safety risk caused by the piercing of the blue film.

[0045] In the battery pack in some embodiments, the upper side of the protrusion forms a downward recess.

[0046] The upper side of the protrusion forms an upward recess, which facilitates the limitation of welding particles in the slot hole and on the top surface of the pole during the welding of the tab and the corresponding pole, effectively prevents the particles from entering the gap between adjacent battery monomers, thereby reducing the possibility of the particles piercing the blue film between the battery monomers, and further reducing the safety risk caused by the piercing of the blue film.

[0047] In some embodiments, the plurality of tabs comprises: a first tab comprising two tab bodies arranged side by side along the front-rear direction, one protrusion provided on each of the tab bodies, the first tab configured to connect two pole columns of two adjacent battery cells along the left-right direction and located on the same side; and / or a second tab comprising two tab bodies arranged along the left-right direction and staggered along the front-rear direction, and a bending portion connecting the two tab bodies, one protrusion provided on each of the tab bodies, the second tab configured to connect two pole columns of two adjacent battery cells along the front-rear direction and located on the two sides respectively; and / or a third tab comprising one tab body and a first output pole connected to the tab body, one protrusion provided on the tab body, the third tab configured to connect one pole column of the battery cell adjacent to the circuit board and a first electrode connecting end of the two electrode connecting ends of the circuit board; and / or a fourth tab comprising one tab body and a second output pole connected to the tab body, one protrusion provided on the tab body, the fourth tab configured to connect one pole column of the battery cell away from the circuit board and a second electrode connecting end of the two electrode connecting ends of the circuit board.

[0048] The first tab is used to connect the pole columns of two adjacent battery cells along the front-rear direction. The second tab is used to connect the pole columns of two adjacent battery cells along the left-right direction. The third tab is used to connect the battery cell mounted on the rear side of the inner box body and the circuit board. The fourth tab is used to connect the battery cell mounted on the front side of the inner box body and the circuit board. By providing different forms of tabs, it is beneficial to achieve the required electrical connection between the plurality of battery cells and the circuit board, for example, by connecting an even number of battery cells in series through a plurality of first tabs and one second tab, and then electrically connecting the even number of battery cells and the two electrode connecting ends of the circuit board through the third tab and the fourth tab respectively.

[0049] In some embodiments, the battery pack comprises a plurality of tab mounting grooves corresponding to the plurality of tabs, and each tab is mounted in the corresponding tab mounting groove.

[0050] The tab is mounted in the tab mounting groove, which is beneficial to reduce the possibility of welding slag generated when one tab is welded with the corresponding pole column falling into the remaining grooves, thereby reducing the possibility of particulate matter entering the gap between adjacent battery cells and piercing the blue film between the battery cells, and facilitating the rapid positioning of the tab and the installation of the tab in the isolation plate.

[0051] In some embodiments, the battery pack is a low-voltage battery pack.

[0052] Another aspect of the present application provides a power consuming device comprising the battery pack described above, wherein the battery pack is used to provide power for the power consuming device.

[0053] The power consuming device has the advantages of the battery pack.

[0054] The other features and advantages of the present application will be apparent from the following detailed description of exemplary embodiments of the present application, taken in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0055] The accompanying drawings, which are included to provide a further understanding of the present application, illustrate embodiments of the present application and together with the description explain the present application. In the drawings:

[0056] Figure 1 A structural schematic diagram of a power consuming device according to some embodiments of the present application.

[0057] Figure 2 A structural schematic diagram of a battery pack according to some embodiments of the present application.

[0058] Figure 3 A structural schematic diagram of a battery pack according to some embodiments of the present application. Figure 2 A structural schematic diagram of a battery pack according to some embodiments of the present application.

[0059] Figure 4 A structural schematic diagram of a battery pack according to some embodiments of the present application. Figure 2 A structural schematic diagram of a battery pack according to some embodiments of the present application.

[0060] Figure 5 A structural schematic diagram of a battery pack according to some embodiments of the present application. Figure 2 A structural schematic diagram of a battery pack according to some embodiments of the present application.

[0061] Figure 6 A structural schematic diagram of a battery pack according to some embodiments of the present application. Figure 2 A structural schematic diagram of a battery pack according to some embodiments of the present application.

[0062] Figure 7 A structural schematic diagram of a battery pack according to some embodiments of the present application. Figure 2 A structural schematic diagram of a battery pack according to some embodiments of the present application.

[0063] Figure 8 A structural schematic diagram of a battery pack according to some embodiments of the present application. Figure 2 A structural schematic diagram of a battery pack according to some embodiments of the present application.

[0064] Figure 9 A structural schematic diagram of a battery pack according to some embodiments of the present application. Figure 2 A structural schematic diagram of a battery pack according to some embodiments of the present application.

[0065] Figure 10 A structural schematic diagram of a battery pack according to some embodiments of the present application. Figure 2 A structural schematic diagram of a battery pack according to some embodiments of the present application.

[0066] Figure 11 A structural schematic diagram of a battery pack according to some embodiments of the present application.Figure 2 Structure diagram of the isolation plate in the battery pack of the embodiment.

[0067] Figure 12 For Figure 2 Structure diagram of the first bar in the battery pack of the embodiment.

[0068] Figure 13 For Figure 2 Structure diagram of the second bar in the battery pack of the embodiment.

[0069] Figure 14 For Figure 2 Structure diagram of the third bar in the battery pack of the embodiment.

[0070] Figure 15 For Figure 2 Structure diagram of the fourth bar in the battery pack of the embodiment.

[0071] Figure 16 For Figure 2 Structure diagram of the insulation plate in the battery pack of the embodiment.

[0072] Figure 17 For Figure 2 Structure diagram of the buffer pad in the battery pack of the embodiment.

[0073] Figures 1 to 17 In the drawings, the respective reference numerals represent:

[0074] B, battery pack;

[0075] D, electrical equipment;

[0076] 10, battery cell; 11, pole; 111, positive pole; 112, negative pole;

[0077] 20, box body; 21, outer box body; 211, inner box body mounting port; 212, output end opening; 213, output terminal mounting groove; 214, guide groove; 22, inner box body; 221, battery mounting port; 222, positioning boss; 223, ear plate; 224, guide rail;

[0078] 30, output terminal; 31, base plate; 32, output pole interface; 321, output end;

[0079] 40, circuit board; 41, electrode connection end; 411, first electrode connection end; 412, second electrode connection end;

[0080] 50, isolation plate; 51, pole mounting groove; 511, slot hole; 52, bar mounting groove;

[0081] 60, tablet; 601, first tablet; 602, second tablet; 603, third tablet; 604, fourth tablet; 61, protrusion; 62, bent portion; 63, first output pole; 64, second output pole; 65, recess; 66, tablet body;

[0082] 70, insulating plate; 71, main plate body; 72, wing plate;

[0083] 80, cushion. DETAILED DESCRIPTION

[0084] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. The following description of at least one exemplary embodiment is merely illustrative in nature and not intended to further limit the scope of the application or its applications or uses. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of the present application.

[0085] Unless otherwise specifically indicated, the relative arrangement of parts, numerical expressions, and numerical values set forth in the embodiments are not intended to limit the scope of the present application. At the same time, it should be understood that the sizes of the various parts shown in the drawings are not drawn in accordance with the actual proportional relationship for the convenience of description. The technology, methods and devices known to those of ordinary skill in the relevant art can not be discussed in detail, but should be considered as part of the specification under appropriate circumstances. In all examples shown and discussed herein, any specific value should be interpreted as merely exemplary, and not as a limitation. Therefore, other examples of exemplary embodiments can have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0086] In the description of the present application, it should also be noted that, unless otherwise specifically defined and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be directly connected, or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0087] In the description of the present application, it should be understood that the use of the terms "first", "second", etc. to define parts is only for the convenience of distinguishing the corresponding parts, and the above terms have no special meaning unless otherwise stated, and therefore cannot be understood as a limitation on the scope of protection of the present application.

[0088] In the description of the present application, it needs to be understood that the orientation words such as "horizontal, upper, lower, front, back, left, right" and the like indicated orientation or position relationship shown in the drawings, only for the convenience of describing the present application and simplifying the description, without making the opposite statement, these orientation words do not indicate and imply that the device or element referred to must have a particular orientation or be constructed and operated in a particular orientation, therefore, it cannot be understood as a limitation on the scope of protection of the present application; the orientation words "inner, outer" refer to the inner and outer relative to the contour of each component itself.

[0089] In addition, the technical features involved in the different embodiments of the present application described below can be combined with each other as long as they do not conflict with each other.

[0090] In the process of forming the present application, the inventors found that the battery pack of the related art sets the circuit board and the output terminal on the upper part of the battery pack, which occupies too much space in the height direction of the battery pack, which is often not conducive to the reasonable arrangement of each related component around the battery pack of the power consumption equipment where the battery pack is located. The present application provides a battery pack, the circuit board and the output terminal of the battery pack are installed on the side of the battery pack, the output end of the output terminal interface of the output terminal is exposed outside the side of the box through the output end opening on the box, which is conducive to saving the space in the height direction of the battery pack, thereby also saving the space in the height direction of the power consumption equipment where the battery pack is located.

[0091] Further, the present application also provides a power consumption equipment comprising the battery pack.

[0092] The battery pack is configured to provide electrical energy to the power consumption equipment. The power consumption equipment can be, but is not limited to, a mobile phone, a portable device, a notebook computer, an electric vehicle, an electric vehicle, a ship, a spacecraft, an electric toy and an electric tool, etc. For example, the spacecraft includes an airplane, a rocket, a space shuttle and a spacecraft, etc. The electric toy includes a fixed or mobile electric toy, for example, a game console, an electric vehicle toy, an electric ship toy and an electric plane toy, etc. The electric tool includes a metal cutting electric tool, a grinding electric tool, an assembly electric tool and a railway electric tool, for example, an electric drill, an electric grinder, an electric wrench, an electric screwdriver, an electric hammer, an impact drill, a concrete vibrator and an electric planer.

[0093] The battery pack refers to a single physical module comprising one or more battery monomers to provide higher voltage and capacity. The battery pack generally comprises a box for packaging one or more battery monomers. The box can avoid the influence of liquid or other foreign matters on the charging or discharging of the battery monomers.

[0094] The battery cell refers to the smallest unit that constitutes a battery. In the present application, the battery cell can include a lithium ion battery, a sodium ion battery, a sodium lithium ion battery, a lithium metal battery, a sodium metal battery, a lithium-sulfur battery, a magnesium ion battery, a nickel-hydrogen battery, a nickel-cadmium battery, a lead-acid battery, etc., and the present application embodiment is not limited thereto. The battery cell can be in the shape of a flat body, a cuboid, or other shapes, and the present application embodiment is not limited thereto. The battery cell is generally packaged as a square battery cell and a soft-pack battery cell, and the present application embodiment is not limited thereto.

[0095] In the description of the present application, "front" corresponds to the side away from the output terminal, "rear" corresponds to the side where the output terminal output pole interface is located, and also corresponds to the left and right sides of Figure 5 , respectively. "Up" and "down" correspond to the up-down direction when the battery pack is installed and used, and also correspond to the upper and lower sides of Figure 5 , respectively. "Left" and "right" are the left-right direction when viewed from "front" to "rear". "Left" and "right" correspond to the rear side and the front side of Figure 5 , respectively.

[0096] As shown in Figures 2 to 17 , the present application embodiment provides a battery pack, which includes a battery cell 10, a box body 20, a circuit board 40, and an output terminal 30. The battery cell 10 includes a pole 11. The battery cell 10 is arranged in the box body 20. The box body 20 includes an outer box body 21 and an inner box body 22. The front side of the outer box body 21 is open to form an inner box body mounting port 211. The inner box body 22 is arranged in the outer box body 21 along the front-rear direction and is extractable from the inner box body mounting port 211. The upper side of the inner box body 22 is open to form a battery mounting port 221. The battery cell 10 is arranged in the inner box body 22 through the battery mounting port 221. The circuit board 40 is electrically connected with the pole 11 and is arranged at the side of the box body 20. The output terminal 30 is arranged at the side of the box body 20. The output terminal 30 includes an output pole interface 32, the output pole interface 32 is electrically connected with the pole 11 through the circuit board 40, and the output end 321 of the output pole interface 32 is exposed outside the side of the box body 20 through an output end opening 212 on the box body 20.

[0097] In the battery pack B of the embodiments of the present application, since the circuit board 40 and the output terminal 30 are both mounted on the side of the battery pack B, the output end 321 of the output pole interface 32 of the output terminal 30 is exposed outside the side of the box body 20 through the output end opening 212 on the box body 20, which is beneficial to save the space in the height direction of the battery pack B, thereby also saving the space in the height direction of the electric equipment such as the electric vehicle as a whole, and partially releasing the space in the height direction of the electric equipment occupied by the battery pack B, thereby facilitating the reasonable arrangement of each related component around the battery pack B in the electric equipment. The box body 20 is divided into the outer box body 21 and the inner box body 22 which can be pulled out, which optimizes the structural strength of the battery pack B, enhances the extrusion resistance, vibration resistance and impact resistance of the battery pack B, and is beneficial to prevent the battery pack B from being damaged due to strong vibration, thereby reducing the safety risk of the battery pack B. After the inner box body 22 is disassembled from the outer box body 21, it can be pulled out from the outer box body 21, which is convenient for maintenance and replacement of the battery monomer 10 or other parts, and is beneficial to reduce the maintenance difficulty and cost of the battery pack B.

[0098] In some embodiments, as shown in Figures 2 to 5 、 Figure 7 and Figure 8 , the rear side wall of the outer box body 21 is provided with an output end opening 212. The circuit board 40 is mounted between the rear side wall of the outer box body 21 and the rear side wall of the inner box body 22. The output terminal 30 is mounted between the rear side of the circuit board 40 and the rear side wall of the outer box body 21.

[0099] The circuit board 40 can be physically isolated from the battery monomer 10 through the rear side wall of the inner box body 22, reducing the interference and influence between the circuit board 40 and the battery monomer 10. The output terminal 30 is mounted between the rear side of the circuit board 40 and the rear side wall of the outer box body 21, which is beneficial to prevent damage to the circuit board 40 and the output terminal 30 when the battery pack B is assembled, and to protect the circuit board 40 and the output terminal 30 after the battery pack B is assembled.

[0100] In some embodiments, as shown in Figures 2 to 10 、 Figure 4 and Figure 7 , the circuit board 40 is fixedly connected to the rear side wall of the inner box body 22; and / or the rear side wall of the inner box body 22 is provided with a circuit board limiting structure configured to limit the relative position of the circuit board 40 and the inner box body 22 in at least one direction; and / or the outer box body 21 comprises an output terminal mounting groove 213 which is arranged inside the rear side wall of the outer box body 21 and communicates with the output end opening 212, and the output terminal 30 is embedded in the output terminal mounting groove 213; and / or the output end 321 extends from the output end opening 212 to the outside of the rear of the outer box body 21; and / or the front end of the inner box body 22 further comprises an ear plate 223.

[0101] The circuit board 40 is fixedly connected to the rear side wall of the inner box body 22, which is conducive to reducing the relative displacement of the circuit board 40 and the inner box body 22 due to vibration and the like, and is conducive to forming a stable electrical connection between the circuit board 40 and the battery monomer 10, thereby facilitating the continuous and stable operation of the battery pack B.

[0102] The rear side wall of the inner box body 22 is provided with a circuit board limiting structure. The circuit board limiting structure limits and constrains the circuit board 40 relative to the inner box body 22 in at least one direction, which is conducive to quickly positioning the relative position of the circuit board 40 and the inner box body 22, thereby facilitating the quick assembly of the circuit board 40, the inner box body 22, and the battery monomer 10, and also reducing the risk of misalignment between the circuit board 40 and the inner box body 22, thereby facilitating the stable electrical connection between the circuit board 40 and the battery monomer 10, and thereby facilitating the continuous and stable operation of the battery pack B.

[0103] The outer box body 21 is provided with an output terminal mounting groove 213 communicating with the output opening 212, and the output terminal 30 is embedded in the output terminal mounting groove 213, which is conducive to quickly positioning and installing the output terminal 30 relative to the outer box body 21, and also conducive to reducing the space occupied by the output terminal 30 in the front-rear direction, thereby reducing the overall space occupied by the battery pack B.

[0104] The output end 321 extends from the output opening 212 to the outside of the rear of the outer box body 21, which is conducive to quickly and accurately and stably electrically connecting the battery pack B and the electrical device supplied by it, and is conducive to the battery pack B continuously and stably supplying power to the electrical device electrically connected to the output pole interface 32.

[0105] The front end of the inner box body 22 is provided with an ear plate 223, which is conducive to pulling the inner box body 22 in and out of the outer box body 21, thereby facilitating the assembly and maintenance of the battery pack B.

[0106] In some embodiments, as shown in Figure 8 the top end of the circuit board 40 is provided with two electrode connection ends 41 extending forward on both sides, respectively, and the two electrode connection ends 41 are electrically connected to the positive pole 111 and the negative pole 112 of the pole 11, respectively; and / or the circuit board limiting structure includes a positioning boss 222 provided on the bottom of the rear side wall of the inner box body 22, and the circuit board 40 is arranged on the positioning boss 222; and / or the output terminal 30 is fixedly connected to the outer box body 21 and the circuit board 40 by the same set of bolts extending into the outer box body 21 from the outside of the outer box body 21; and / or the output terminal 30 further includes a base plate 31, and the output pole interface 32 is connected to the rear side of the base plate 31, and the base plate 31 is embedded in the output terminal mounting groove 213 and cooperates with the shape of the output terminal mounting groove 213; and / or the output pole interface 32 cooperates with the shape of the output opening 212; and / or the ear plate 223 is provided with a through hole, and / or the plate surface of the ear plate 223 is perpendicular to the up-down direction.

[0107] The top end of the circuit board 40 is provided with two electrode connecting ends 41 extending forward on the left and right sides, respectively, which are electrically connected with the positive electrode pole 111 and the negative electrode pole 112 in the pole 11, respectively, so as to set a sufficient safety distance between the positive electrode and the negative electrode of the battery pack B, reduce the risk of short circuit of the positive electrode and the negative electrode due to impact, vibration and the like, and improve the safety performance of the battery pack B during operation.

[0108] The circuit board limiting structure includes a positioning boss 222 arranged at the bottom of the rear side wall of the inner box body 22, which supports the circuit board 40, so as to quickly position and install the circuit board 40, reduce the possibility of relative movement of the circuit board 40 and the inner box body 22 in the up-down direction during operation of the battery pack B, and stably electrically connect the circuit board 40 and the battery monomer 10. The positioning boss 222 is also conducive to protecting the circuit board 40 during assembly of the battery pack B, preventing damage caused by bumping between the circuit board 40 and the outer box body 21.

[0109] The output terminal 30, the outer box body 21 and the circuit board 40 are fixedly connected by the same set of bolts, which improves the connection stability of the circuit board 40 and the output terminal 30 relative to the inner box body 22 and the outer box body 21, and enables the circuit board 40, the output terminal 30 and the battery monomer 10 to be more stably electrically connected, thereby facilitating continuous and stable operation of the battery pack B.

[0110] The substrate 31 is embedded in the output terminal mounting groove 213 and cooperates with the shape of the output terminal mounting groove 213, which facilitates quick and accurate positioning and cooperation of the output terminal 30 and the outer box body 21, facilitates installation of the output terminal 30 on the outer box body 21, and facilitates quick and accurate positioning and cooperation of the output pole interface 32 and the output end opening 212.

[0111] The ear plate 223 is provided with a through hole and / or the plate surface of the ear plate 223 is perpendicular to the up-down direction, which facilitates the operator to pull out the inner box body 22.

[0112] In some embodiments, as shown in Figure 4 , Figure 7 and Figure 8 , the inner side of the outer box body 21 is provided with a first guide structure. The outer side of the inner box body 22 is provided with a second guide structure. The second guide structure cooperates with the first guide structure to limit the movement of the inner box body 22 relative to the outer box body 21 in the front-rear direction.

[0113] The first guide structure and the second guide structure provide guidance in the front-rear direction for the movement of the inner box body 22 relative to the outer box body 21, which facilitates quick and accurate installation of the inner box body 22 into the outer box body 21 or removal of the inner box body 22 from the outer box body 21, and also facilitates reduction of the left-right direction deviation of the inner box body 22 relative to the outer box body 21 due to vibration and impact, thereby further improving the overall structural strength of the box body 20.

[0114] In some embodiments, as shown in Figure 4 , Figure 7 and Figure 8 , one of the first guide structure and the second guide structure includes a guide groove 214 arranged in the front-rear direction, and the other of the first guide structure and the second guide structure includes a guide rail 224 that is in sliding fit with the guide groove 214; and / or one of the first guide structure and the second guide structure is arranged on the inner side of the bottom wall of the outer box body 21, and the other of the first guide structure and the second guide structure is arranged on the outer side of the bottom wall of the inner box body 22.

[0115] The guide groove 214 and the guide rail 224 form a sliding pair, which facilitates more stable movement of the inner box body 22 relative to the outer box body 21 in the front-rear direction, facilitates stable installation of the inner box body 22 in the outer box body 21 or removal of the inner box body 22 from the outer box body 21, and also facilitates more effective restriction of the lateral displacement of the inner box body 22 relative to the outer box body 21 due to vibration or impact, thereby further improving the overall structural strength of the box body 20.

[0116] One of the first guide structure and the second guide structure is arranged on the inner side of the bottom wall of the outer box body 21, and the other of the first guide structure and the second guide structure is arranged on the outer side of the bottom wall of the inner box body 22, which facilitates stable fit of the first guide structure and the second guide structure during movement of the inner box body 22 relative to the outer box body 21, and facilitates quick assembly of the inner box body 22 and the outer box body 21.

[0117] In some embodiments, as shown in Figure 3 , Figure 4 and Figure 16 , the outer box body 21 forms a first installation stopper at the inner box body installation opening 211, and the front end of the inner box body 22 forms a second installation stopper that is in fit with the first installation stopper; and / or the connection between the outer box body 21 and the inner box body 22 is connected in a sealed manner by welding.

[0118] The fit of the first installation stopper and the second installation stopper facilitates enhancement of the overall structural strength of the box body 20, and also facilitates improvement of the sealing performance of the outer box body 21 and the inner box body 22 after installation.

[0119] The sealed connection of the connection between the outer box body 21 and the inner box body 22 by welding has low cost and good sealing effect, and also facilitates further enhancement of the overall structural strength of the box body 20.

[0120] In some embodiments, as shown in Figure 3 , Figure 4 and Figure 17 , the battery pack B further includes an insulating plate 70, which is located between the battery monomer 10 and the inner box body 22.

[0121] The arrangement of the insulating plate 70 separates the battery monomer 10 and the inner box body 22, which facilitates reduction of the possibility of electric leakage through the inner box body 22.

[0122] In some embodiments, as shown in Figure 3 , Figure 4 and Figure 16 , the battery pack B further comprises a buffer pad 80, which is arranged between the battery monomer 10 and the insulation plate 70.

[0123] The buffer pad 80 is arranged to reduce the impact on the battery monomer 10 caused by vibration and to reduce the bumping of the battery monomer 10 during installation.

[0124] In some embodiments, as shown in Figures 3 to 5 , Figure 11 and Figures 1 to 17 , the horizontal cross-section of the insulation plate 70 is U-shaped, including a main plate body 71 and two wing plates 72 respectively connected to the left and right ends of the main plate body 71, the main plate body 71 is located between the battery monomer 10 and the inner box body 22, the buffer pad 80 is arranged between the battery monomer 10 and the main plate body 71, and the two wing plates 72 are respectively arranged between the battery monomer 10 and the inner box body 22.

[0125] The horizontal cross-section of the insulation plate 70 is U-shaped, which is conducive to better isolation of the battery monomer 10 and the inner box body 22, and is conducive to more effectively reducing the possibility of electric leakage through the inner box body 22.

[0126] In some embodiments, as shown in Figures 1 to 17 and Figures 1 to 17 , the battery pack B comprises a plurality of battery monomers 10, a plurality of busbars 60 and an isolation plate 50. Each busbar 60 is electrically connected to the plurality of battery monomers 10 by connecting to the pole 11. The isolation plate 50 is arranged on the top of the plurality of battery monomers 10 and comprises a plurality of pole mounting slots 51 with downward openings corresponding to each pole 11 of the plurality of battery monomers 10. A slot hole 511 is provided on the bottom wall of each pole mounting slot 51. Each pole 11 is located in the corresponding pole mounting slot 51. The edge of the opening of the pole mounting slot 51 is located inside the top edge of the battery monomer 10 where the corresponding pole 11 is located. The slot hole 511 is located on the top of the corresponding pole 11, and the edge of the slot hole 511 is located inside the top edge of the corresponding pole 11. The plurality of busbars 60 are arranged on the top of the isolation plate 50, and each busbar 60 is welded to the pole 11 connected thereto through the slot hole 511.

[0127] In the related art, a through hole is formed in the isolation plate 50 and matches the pole column 11, the pole column 11 passes through the through hole, and a gap exists between the hole wall of the through hole and the pole column 11. During the assembly of the battery pack B, particulate matter (for example, welding slag generated during the welding of the tab 60 and the pole column 11 of the battery cell 10) is likely to enter the gap between adjacent battery cells 10 through the gap between the hole wall of the through hole and the pole column 11. The particulate matter that enters the gap between adjacent battery cells 10 may pierce the blue film between the battery cells 10. Once the blue film is pierced, the insulation and voltage resistance of the battery cell 10 will fail, and in severe cases, double-point insulation failure will occur, which may further cause safety risks.

[0128] In the battery pack B of the embodiments of the present application, the isolation plate 50 includes a plurality of pole column mounting grooves 51 with downwardly opening notches corresponding to the pole columns 11 of the plurality of battery cells 10. The bottom wall of each pole column mounting groove 51 is provided with a slot hole 511. Each pole column 11 is located in the corresponding pole column mounting groove 51. The notch edge of the pole column mounting groove 51 is located inside the top surface edge of the battery cell 10 where the corresponding pole column 11 is located. The slot hole 511 is located at the top of the corresponding pole column 11. The edge of the slot hole 511 is located inside the top surface edge of the corresponding pole column 11. When each tab 60 is welded to the pole column 11 connected thereto through the slot hole 511, the particulate matter generated is generally limited to the slot hole 511 and the top of the corresponding pole column 11. Even if a small amount of particulate matter enters the pole column mounting groove 51 through the gap between the slot hole 511 and the pole column 11, it will also be limited to the pole column mounting groove 51 and on the top surface of the battery cell 10, and will not enter the gap between adjacent battery cells 10, thereby facilitating the prevention of particulate matter from entering the gap between adjacent battery cells 10 and reducing the possibility of particulate matter piercing the blue film between the battery cells 10, thereby reducing the safety risks caused by the piercing of the blue film.

[0129] The embodiments of the present application do not intend to limit the shapes of the battery cell 10, the pole column 11, the pole column mounting groove 51, and the slot hole 511 as long as the relevant requirements of the present application are met. For example, in the embodiments shown in Figures 3 to 5 the embodiments, the battery cell 10 is square. In unillustrated embodiments, the battery cell 10 can also be of other shapes, for example, the battery cell 10 can be cylindrical. For another example, Figure 11 in the embodiments shown, the pole column 11 of the battery cell 10 is square. In unillustrated embodiments, the pole column 11 can also be of other shapes, for example, cylindrical. For another example, Figures 12 to 15 in the embodiments shown, the pole column mounting groove 51 or the slot hole 511 is square. In unillustrated embodiments, the pole column mounting groove 51 or the slot hole 511 can be of other shapes, for example, circular, and the like.

[0130] In some embodiments, as Figure 2 and Figures 12 to 15As shown, the top surface of the pole post 11 is flush with the lower surface of the bottom wall of the corresponding pole post mounting groove 51; and / or the lower surface outside the slot of the pole post mounting groove 51 of the isolation plate 50 is flush with the top surface of the battery cell 10.

[0131] The pole post 11 is shape-fitted with the pole post mounting groove 51, which is conducive to minimizing or eliminating the gap between the pole post 11 and the pole post mounting groove 51, preventing particulate matter from entering the gap between adjacent battery cells 10 through the gap between the pole post 11 and the pole post mounting groove 51, thereby reducing the possibility of particulate matter piercing the blue film between the battery cells 10, and further reducing the safety risks caused by the piercing of the blue film.

[0132] The top surface of the pole post 11 is flush with the lower surface of the bottom wall of the corresponding pole post mounting groove 51, which is conducive to minimizing or eliminating the gap between the top surface of the pole post 11 and the lower surface of the bottom wall of the corresponding pole post mounting groove 51, preventing particulate matter from entering the gap between adjacent battery cells 10 through the gap between the top surface of the pole post 11 and the lower surface of the bottom wall of the corresponding pole post mounting groove 51, thereby reducing the possibility of particulate matter piercing the blue film between the battery cells 10, and further reducing the safety risks caused by the piercing of the blue film.

[0133] The lower surface outside the slot of the pole post mounting groove 51 of the isolation plate 50 is flush with the top surface of the battery cell 10, which is conducive to minimizing or eliminating the gap between the lower surface outside the slot of the pole post mounting groove 51 of the isolation plate 50 and the top surface of the battery cell 10, preventing particulate matter from entering the gap between adjacent battery cells 10 through the gap between the lower surface outside the slot of the pole post mounting groove 51 of the isolation plate 50 and the top surface of the battery cell 10, thereby reducing the possibility of particulate matter piercing the blue film between the battery cells 10, and further reducing the safety risks caused by the piercing of the blue film.

[0134] In some embodiments, as shown in FIG. 6, the pole post 11 is shape-fitted with the corresponding pole post mounting groove 51; and / or the top surface of the pole post 11 is flush with the lower surface of the bottom wall of the corresponding pole post mounting groove 51; and / or the lower surface outside the slot of the pole post mounting groove 51 of the isolation plate 50 is flush with the top surface of the battery cell 10. Figure 5 As shown, the tab 60 includes a tab body 66 and a protrusion 61 protruding downward relative to the tab body 66, the tab body 66 is located above the upper surface of the bottom wall of the pole post mounting groove 51, and the protrusion 61 is configured to extend into the slot hole 511 and be welded with the pole post 11.

[0135] By connecting the protrusion 61 with the pole post 11, it is conducive to the welding of the pole post 11 with the tab 60, and also conducive to the limitation of particulate matter generated by welding within the slot hole 511 and on the top surface of the pole post 11, which is conducive to preventing particulate matter from entering the gap between adjacent battery cells, thereby reducing the possibility of particulate matter piercing the blue film between the battery cells, and further reducing the safety risks caused by the piercing of the blue film.

[0136] In some embodiments, as shown in FIG. 6, the pole post 11 is shape-fitted with the corresponding pole post mounting groove 51; and / or the top surface of the pole post 11 is flush with the lower surface of the bottom wall of the corresponding pole post mounting groove 51; and / or the lower surface outside the slot of the pole post mounting groove 51 of the isolation plate 50 is flush with the top surface of the battery cell 10. Figure 1 and Figures 1 to 17As shown, the protrusion 61 is shaped to fit into the slot hole 511; and / or the bottom surface of the protrusion 61 is flush with the top surface of the pole post 11; and / or the lower surface of the tab 66 outside the protrusion 61 is flush with the upper surface of the bottom wall of the pole post mounting slot 51.

[0137] The protrusion 61 being shaped to fit into the slot hole 511 facilitates the accurate positioning of the tab 60 with the corresponding pole post 11, and makes the welding position between the tab 60 and the pole post 11 accurate, further facilitating the limitation of the welding particles into the slot hole 511 and on the top surface of the pole post 11, effectively preventing the particles from entering the gap between the adjacent battery monomers 10, thereby reducing the possibility of the particles piercing the blue film between the battery monomers 10, and further reducing the safety risk caused by the piercing of the blue film.

[0138] The bottom surface of the protrusion 61 being flush with the top surface of the pole post 11 facilitates the smooth completion of the welding of the tab 60 and the pole post 11, reduces the welding time, and reduces the generation of welding particles during welding, thereby facilitating the reduction of the possibility of the particles entering the gap between the adjacent battery monomers 10 to pierce the blue film between the battery monomers, and further reducing the safety risk caused by the piercing of the blue film.

[0139] The lower surface of the tab 66 outside the protrusion 61 being flush with the upper surface of the bottom wall of the pole post mounting slot 51 facilitates the reduction of the particles entering the slot hole 511 from the gap between the lower surface of the tab 66 outside the protrusion 61 and the upper surface of the bottom wall of the pole post mounting slot 51 during welding, thereby facilitating the reduction of the possibility of the particles entering the gap between the adjacent battery monomers 10 to pierce the blue film between the battery monomers 10, and further reducing the safety risk caused by the piercing of the blue film.

[0140] In some embodiments, the upper side of the protrusion 61 forms a downwardly recessed recess 65.

[0141] The upper side of the protrusion 61 forms an upwardly recessed recess 65, which facilitates the limitation of the welding particles into the slot hole 511 and on the top surface of the pole post 11 during the welding of the tab 60 and the corresponding pole post 11, effectively preventing the particles from entering the gap between the adjacent battery monomers 10, thereby reducing the possibility of the particles piercing the blue film between the battery monomers 10, and further reducing the safety risk caused by the piercing of the blue film.

[0142] The recess 65 is formed in the form of a blind hole. The tab 60 is fixedly connected to the corresponding pole 11 on one side of the blind hole by welding, such as laser welding or ultrasonic welding. The protruding portion 61 is formed with a blind hole on the side away from the corresponding pole 11 and is fixedly connected to the corresponding pole 11 by laser welding or ultrasonic welding. The protruding portion 61 can be welded and connected to the pole 11 at the end of the blind hole by laser welding or ultrasonic welding, and the welding slag generated between the protruding portion 61 and the pole 11 is small, thereby facilitating the reduction of the possibility of particulate matter entering the gap between adjacent battery monomers 10 to pierce the blue film between the battery monomers 10, and further reducing the safety risk caused by the piercing of the blue film.

[0143] In some embodiments, the plurality of tabs 60 includes: a first tab 601, two tab bodies 66 are arranged side by side in the front-rear direction, one protruding portion 61 is arranged on each tab body 66, and the first tab 601 is configured to connect two poles 11 on the same side in the left-right direction of two adjacent battery monomers 10 in the front-rear direction; and / or a second tab 602, including two tab bodies 66 arranged in the left-right direction and staggered in the front-rear direction, and a bending portion 62 connecting the two tab bodies 66, one protruding portion 61 is arranged on each tab body 66, and the second tab 602 is configured to connect two poles 11 on the two sides in the left-right direction of two adjacent battery monomers 10 in the front-rear direction; and / or a third tab 603, including a tab body 66 and a first output pole 63 connected to the tab body 66, one protruding portion 61 is arranged on the tab body 66, and the third tab 603 is configured to connect one pole 11 of the battery monomer 10 adjacent to the circuit board 40 and a first electrode connecting end 411 of the two electrode connecting ends 41 of the circuit board 40; and / or a fourth tab 604, including a tab body 66 and a second output pole 64 connected to the tab body 66, one protruding portion 61 is arranged on the tab body 66, and the fourth tab 604 is configured to connect one pole 11 of the battery monomer 10 away from the circuit board 40 and a second electrode connecting end 412 of the two electrode connecting ends 41 of the circuit board 40.

[0144] The first tab 601 is used to connect the poles 11 of two adjacent battery monomers 10 in the front-rear direction. The second tab 602 is used to connect the poles 11 of two adjacent battery monomers 10 in the left-right direction. The third tab 603 is used to connect the battery monomer 10 mounted on the rear side of the inner box 22 and the circuit board 40. The fourth tab 604 is used to connect the battery monomer 10 mounted on the front side of the inner box 22 and the circuit board 40. By providing different forms of tabs 60, it is beneficial to achieve the required electrical connection between the plurality of battery monomers 10 and the circuit board 40, for example, by connecting an even number of battery monomers 10 together in series through a plurality of first tabs 601 and a second tab 602, and then electrically connecting the even number of battery monomers 10 and the two electrode connecting ends 41 of the circuit board 40 together through the third tab 603 and the fourth tab 604, respectively.

[0145] In some embodiments, such as Figure 1 As shown, the isolation plate 50 includes multiple bar plate mounting slots 52 that correspond one-to-one with multiple bar plates 60, and each bar plate 60 is installed in the corresponding bar plate mounting slot 52.

[0146] The electrode plate 60 is installed in the electrode plate mounting groove 52, which helps to reduce the possibility of welding slag generated when welding one electrode plate 60 to the corresponding terminal post 11 falling into the other groove holes 511. This helps to reduce the possibility of particulate matter entering the gap between adjacent battery cells 10 and piercing the blue film between battery cells 10. It also helps to quickly position the electrode plate 60 and facilitates the installation of the electrode plate 60 into the separator plate 50.

[0147] In some embodiments, battery pack B is a low-voltage battery pack.

[0148] This application embodiment also provides an electrical device D, such as... Figures 2 to 5 As shown, the electrical device D includes a battery pack B according to an embodiment of this application, which is used to provide power to the electrical device D.

[0149] The electrical device D in this application embodiment has the advantages of the battery pack B in this application embodiment.

[0150] The following is combined with Figure 4 The structure of the battery pack B and the electrical device D of some embodiments of this application will be described in more detail.

[0151] like Figure 6 As shown, electrical equipment D includes battery pack B, which provides power to electrical equipment D. Electrical equipment D is a vehicle, and battery pack B is the vehicle's low-voltage battery pack, which is used for low-voltage power supply, vehicle starting, regenerative braking, automatic start-stop, etc.

[0152] like Figures 3 to 5 As shown, battery pack B includes multiple battery cells 10, housing 20, output terminals 30, circuit board 40, isolation plate 50, multiple battery pads 60, insulation plate 70, and buffer pad 80.

[0153] like Figure 7 and Figure 8 As shown, each battery cell 10 includes two terminals 11, namely a positive terminal 111 and a negative terminal 112. Multiple battery cells 10 are arranged in a row along the front-to-back direction.

[0154] like Figures 3 to 5 , Figure 11 and Figure 3As shown, the box 20 comprises an outer box 21 and an inner box 22. The front side of the outer box 21 is open to form an inner box mounting port 211. The rear side wall of the outer box 21 is provided with an output terminal opening 212. The inner box 22 is pullably mounted in the outer box 21 along the front-rear direction from the inner box mounting port 211, so that the inner box 22 and the outer box 21 form a drawer-type combined structure. The upper side of the inner box 22 is open to form a battery mounting port 221. A plurality of battery monomers 10 are mounted in the inner box 22 through the battery mounting port 221. The outer box 21 comprises a guide groove 214 provided on the inner side of the bottom wall of the outer box 21 extending along the front-rear direction, and the inner box 22 comprises a guide rail 224 provided on the outer side of the bottom wall of the inner box 22 extending along the front-rear direction, and the guide groove 214 and the guide rail 224 are in sliding fit. The inner box 22 further comprises a positioning boss 222 provided on the bottom of the rear side wall and an ear plate 223 provided on the outer side of the front end, the plate surface of the ear plate 223 is perpendicular to the up-down direction, and the ear plate 223 is provided with a through hole.

[0155] The circuit board 40 is mounted between the rear side wall of the outer box 21 and the rear side wall of the inner box 22. The circuit board 40 is arranged on the positioning boss 222 and fixedly connected to the rear side wall of the inner box 22 at both ends by screws. The output terminal 30 is mounted between the rear side of the circuit board 40 and the rear side wall of the outer box 21. And the output terminal 30 is fixedly connected to the outer box 21 and the circuit board 40 by the same set of bolts extending into the outer box 21 from the outside of the outer box 21.

[0156] The output terminal 30 comprises a base plate 31 and an output pole interface 32. The output pole interface comprises an output terminal 321. The base plate 31 is embedded in the output terminal mounting groove 213 formed on the inner surface of the rear side wall of the outer box 21 and is in shape fit with the output terminal mounting groove 213. The base plate 31 and the output terminal mounting groove 213 can be in clearance fit or transition fit. The output pole interface 32 is in shape fit with the output terminal opening 212, and the output terminal 321 extends out of the output terminal opening 212 to the outside of the rear of the outer box 21. The output pole interface 32 and the output terminal opening 212 can be in clearance fit or transition fit.

[0157] The circuit board 40 comprises two electrode connecting ends 41, which are respectively a first electrode connecting end 411 and a second electrode connecting end 412 arranged on the left and right sides of the circuit board 40 and protruding forward. The first electrode connecting end 411 and the second electrode connecting end 412 are respectively electrically connected to the positive pole 111 of each battery monomer 10 and the negative pole 112 of each battery monomer 10 through a plurality of tabs 60. The output terminal 30 is electrically connected to the positive pole 111 and the negative pole 112 of each battery monomer 10 through the circuit board 40.

[0158] The isolation plate 50 is arranged on the top of the plurality of battery monomers 10. As shown in the figure, the isolation plate 50 is arranged on the top of the plurality of battery monomers 10 and is in contact with the top of the plurality of battery monomers 10. The isolation plate 50 is provided with a plurality of through holes 501 corresponding to the plurality of battery monomers 10. The plurality of battery monomers 10 are arranged in the plurality of through holes 501 of the isolation plate 50. Figure 5and Figures 12 to 15 As shown in FIG. 5, the isolation plate 50 includes a plurality of pole mounting grooves 51 corresponding to the pole posts 11 of the plurality of battery cells 10. The bottom wall of each pole mounting groove 51 is provided with a groove hole 511. Each pole post 11 is shaped to fit the corresponding pole mounting groove 51, and the top surface of the pole post 11 is flush with the bottom wall lower surface of the corresponding pole mounting groove 51. The pole post 11 and the corresponding pole mounting groove 51 can be clearance fit or transition fit. The groove edge of the pole mounting groove 51 is located inside the top surface edge of the battery cell 10 where the corresponding pole post 11 is located. The groove hole 511 is located at the top of the corresponding pole post 11. The edge of the groove hole 511 is located inside the top surface edge of the corresponding pole post 11. The lower surface of the groove outside of the pole mounting groove 51 of the isolation plate 50 is flush with the top surface of the battery cell 10.

[0159] As shown in FIG. 5, the isolation plate 50 includes a plurality of pole mounting grooves 51 corresponding to the pole posts 11 of the plurality of battery cells 10. The bottom wall of each pole mounting groove 51 is provided with a groove hole 511. Each pole post 11 is shaped to fit the corresponding pole mounting groove 51, and the top surface of the pole post 11 is flush with the bottom wall lower surface of the corresponding pole mounting groove 51. The pole post 11 and the corresponding pole mounting groove 51 can be clearance fit or transition fit. The groove edge of the pole mounting groove 51 is located inside the top surface edge of the battery cell 10 where the corresponding pole post 11 is located. The groove hole 511 is located at the top of the corresponding pole post 11. The edge of the groove hole 511 is located inside the top surface edge of the corresponding pole post 11. The lower surface of the groove outside of the pole mounting groove 51 of the isolation plate 50 is flush with the top surface of the battery cell 10. ​ 、 ​ 、 ​ As shown in FIG. 5, the isolation plate 50 includes a plurality of pole mounting grooves 51 corresponding to the pole posts 11 of the plurality of battery cells 10. The bottom wall of each pole mounting groove 51 is provided with a groove hole 511. Each pole post 11 is shaped to fit the corresponding pole mounting groove 51, and the top surface of the pole post 11 is flush with the bottom wall lower surface of the corresponding pole mounting groove 51. The pole post 11 and the corresponding pole mounting groove 51 can be clearance fit or transition fit. The groove edge of the pole mounting groove 51 is located inside the top surface edge of the battery cell 10 where the corresponding pole post 11 is located. The groove hole 511 is located at the top of the corresponding pole post 11. The edge of the groove hole 511 is located inside the top surface edge of the corresponding pole post 11. The lower surface of the groove outside of the pole mounting groove 51 of the isolation plate 50 is flush with the top surface of the battery cell 10.

[0160] Each tab 60 includes a tab body 66 and a protruding portion 61 protruding downward relative to the tab body 66. The tab body 66 is located above the upper surface of the bottom wall of the pole mounting groove 51, and the protruding portion 61 is configured to extend into the corresponding groove hole 511 and be welded to the corresponding pole post 11. The protruding portion 61 is shaped to fit the groove hole 511. The protruding portion 61 and the groove hole 511 can be clearance fit or transition fit. The bottom surface of the protruding portion 61 is flush with the top surface of the pole post 11. The lower surface of the tab body 66 outside the protruding portion 61 is flush with the upper surface of the bottom wall of the pole mounting groove 51. The end of the protruding portion 61 away from the pole post 11 is formed as a recessed portion 65 recessed downward. The recessed portion 65 is formed in the form of a blind hole. The protruding portion 61 of the tab 60 is configured to be fixedly connected to the corresponding pole post 11 by laser welding from the side of the blind hole.

[0161] The plurality of tabs 60 includes a plurality of first tabs 601, a second tab 602, a third tab 603, and a fourth tab 604.

[0162] The first tab 601 includes two tab bodies 66 arranged side by side in the front-rear direction. One protruding portion 61 is provided on each tab body 66. Each first tab 601 is configured to connect two pole posts 11 located on the same side in the left-right direction of two battery cells 10 adjacent in the front-rear direction.

[0163] The second busbar 602 includes two pieces 66 arranged along the left-right direction and staggered along the front-rear direction, and a bent portion 62 connecting the two pieces 66. A protrusion 61 is arranged on each piece 66. The second busbar 602 is configured to connect two pole columns 11 respectively located on the two sides of two battery monomers 10 adjacent along the front-rear direction.

[0164] The third busbar 603 includes a piece 66 and a first output pole 63 connected to the piece 66. A protrusion is arranged on the piece 66. The third busbar 603 is configured to connect the pole column 11 (positive pole column 111) on the left side of the battery monomer 10 close to the rear side of the inner box 22 and the first electrode connecting end 411 of the circuit board 40.

[0165] The fourth busbar 604 includes a protrusion 61 and a second output pole 64. The fourth busbar 604 is configured to connect the pole column 11 (negative pole column 112) on the right side of the battery monomer 10 close to the rear side of the inner box 22 and the second electrode connecting end 412 of the circuit board 40.

[0166] Two insulating plates 70 and two buffer pads 80 are arranged correspondingly and respectively arranged on the front and rear sides of the plurality of battery monomers 10. The horizontal cross-section of the insulating plate 70 is U-shaped, including a main plate body 71 and two wing plates 72 respectively connected to the left and right ends of the main plate body 71. The main plate body 71 is located between the battery monomer 10 and the inner box 22. The buffer pad 80 is arranged between the battery monomer 10 and the main plate body 71. The two wing plates 72 are respectively arranged between the battery monomer 10 and the inner box 22.

[0167] The outer box 21 forms a first mounting stop at the inner box mounting port 211, and the front end of the inner box 22 forms a second mounting stop matched with the first mounting stop. After the inner box 22, the plurality of battery monomers 10, the isolation plate 50, the plurality of busbars 60, the circuit board 40, etc. are assembled, and the output terminal 30 is matched with the outer box 21, the inner box 22 is pushed into the outer box 21 from the inner box mounting port 211 of the outer box 21 until the first mounting stop and the second mounting stop are matched. A set of bolts are used to connect the outer box 21, the output terminal 30 and the circuit board 40 from the outside of the rear wall of the outer box 21. Finally, the connection between the outer box 21 and the inner box 22 on the front side is sealingly connected together by welding.

[0168] Finally, it should be noted that the above examples are only used to illustrate the technical solutions of the present application and not to limit them; although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the specific embodiments of the present application can be modified or some technical features can be replaced by equivalents, which should be covered in the technical solution range claimed by the present application.

Claims

1. A battery pack (B) characterized by, The battery pack (B) comprises: a battery cell (10) comprising a pole (11); a box (20) in which the battery cell (10) is arranged, comprising an outer box (21) and an inner box (22), the front side of the outer box (21) being open to form an inner box mounting port (211), the inner box (22) being pullably mounted in the outer box (21) from the inner box mounting port (211) in the front-rear direction, the upper side of the inner box (22) being open to form a battery mounting port (221), the battery cell (10) being mounted in the inner box (22) through the battery mounting port (221); a circuit board (40) electrically connected with the pole (11) and mounted on the side of the box (20); and an output terminal (30) mounted on the side of the box (20) and comprising an output pole interface (32), the output pole interface (32) being electrically connected with the pole (11) through the circuit board (40), and the output end (321) of the output pole interface (32) being exposed outside the side of the box (20) through an output end opening (212) on the box (20).

2. The battery pack (B) according to claim 1, wherein: the output end opening (212) is arranged on the rear side wall of the outer box (21); the circuit board (40) is mounted between the rear side wall of the outer box (21) and the rear side wall of the inner box (22); the output terminal (30) is mounted between the rear side of the circuit board (40) and the rear side wall of the outer box (21).

3. The battery pack (B) according to claim 2, wherein: the circuit board (40) is fixedly connected to the rear side wall of the inner box (22); and / or the rear side wall of the inner box (22) is provided with a circuit board limiting structure configured to limit the relative position of the circuit board (40) and the inner box (22) in at least one direction; and / or the outer box (21) comprises an output terminal mounting groove (213) arranged on the inner side of the rear side wall of the outer box (21) and communicating with the output end opening (212), and the output terminal (30) is embedded in the output terminal mounting groove (213); and / or the output end (321) extends from the output end opening (212) to the outside of the rear of the outer box (21); and / or the front end of the inner box (22) further comprises an ear plate (223).

4. The battery pack (B) according to claim 3, wherein: the top end of the circuit board (40) is provided with two electrode connecting ends (41) extending forward on the left and right sides, respectively, and the two electrode connecting ends (41) are electrically connected with positive and negative poles (111, 112) in the pole (11), respectively; and / or The circuit board limiting structure comprises a positioning boss (222) arranged at the bottom of the rear side wall of the inner box body (22), and the circuit board (40) is arranged on the positioning boss (222); and / or The output terminal (30) is fixedly connected to the outer box body (21) and the circuit board (40) by the same group of bolts which protrude into the outer box body (21) from the outside of the outer box body (21); and / or The output terminal (30) further comprises a base plate (31), and the output pole interface (32) is connected to the rear side of the base plate (31), the base plate (31) is embedded in the output terminal mounting groove (213) and is matched in shape with the output terminal mounting groove (213); and / or The output pole interface (32) is matched in shape with the output terminal opening (212); and / or The ear plate (223) is provided with a through hole, and / or the plate surface of the ear plate (223) is perpendicular to the up-down direction.

5. The battery pack (B) according to claim 2, characterized in that, The inner side of the outer box body (21) is provided with a first guide structure, and the outer side of the inner box body (22) is provided with a second guide structure, and the second guide structure cooperates with the first guide structure to limit the movement of the inner box body (22) relative to the outer box body (21) in the front-rear direction.

6. The battery pack (B) according to claim 5, characterized in that One of the first guide structure and the second guide structure comprises a guide groove (214) extending in the front-rear direction, and the other of the first guide structure and the second guide structure comprises a guide rail (224) extending in the front-rear direction and slidingly matched with the guide groove (214); and / or One of the first guide structure and the second guide structure is arranged on the inner side of the bottom wall of the outer box body (21), and the other of the first guide structure and the second guide structure is arranged on the outer side of the bottom wall of the inner box body (22).

7. The battery pack (B) according to claim 2, characterized in that The outer box body (21) forms a first mounting stopper at the inner box body mounting opening (211), and the front end of the inner box body (22) forms a second mounting stopper matched with the first mounting stopper; and / or The connection between the outer box body (21) and the inner box body (22) is sealingly connected by welding.

8. The battery pack (B) according to claim 2, characterized in that, Further comprising an insulating plate (70) located between the battery monomer (10) and the inner box body (22).

9. The battery pack (B) according to claim 8, characterized in that Further comprising a buffer pad (80) arranged between the battery monomer (10) and the insulating plate (70).

10. The battery pack (B) according to claim 9, characterized in that The horizontal cross section of the insulating plate (70) is U-shaped, comprising a main plate body (71) and two wing plates (72) respectively connected to the left and right ends of the main plate body (71), the main plate body (71) is located between the battery monomer (10) and the inner box body (22), the buffer pad (80) is arranged between the battery monomer (10) and the main plate body (71), and the two wing plates (72) are respectively arranged between the battery monomer (10) and the inner box body (22).

11. The battery pack (B) according to any one of claims 1 to 10, characterized in that, Comprise: A plurality of battery monomers (10); A plurality of bus bars (60), each of the bus bars (60) being electrically connected to the plurality of battery cells (10) by being connected to the pole posts (11); A separation plate (50) disposed on top of the plurality of battery cells (10) and including a plurality of pole post mounting slots (51) with downwardly opening grooves corresponding to each of the pole posts (11) of the plurality of battery cells (10), each of the pole post mounting slots (51) being provided with a slot hole (511) on a bottom wall thereof, each of the pole posts (11) being located in a corresponding one of the pole post mounting slots (51), an edge of the pole post mounting slot (51) being located inward of a top surface edge of the battery cell (10) in which the corresponding pole post (11) is located, the slot hole (511) being located on top of the corresponding pole post (11), an edge of the slot hole (511) being located inward of a top surface edge of the corresponding pole post (11), and the plurality of bus bars (60) being disposed on top of the separation plate (50) and each being welded to the pole post (11) connected thereto through the slot hole (511).

12. The battery pack (B) according to claim 11, characterized in that the pole post (11) is in shape cooperation with the corresponding pole post mounting slot (51); and / or a top surface of the pole post (11) is in abutment with a lower surface of the bottom wall of the corresponding pole post mounting slot (51); and / or a lower surface of the separation plate (50) outward of the groove of the pole post mounting slot (51) is in abutment with a top surface of the battery cell (10).

13. The battery pack (B) according to claim 11, characterized in that, the bus bar (60) includes a bar body (66) and a protruding portion (61) protruding downward relative to the bar body (66), the bar body (66) being located on an upper surface of the bottom wall of the pole post mounting slot (51), and the protruding portion (61) being configured to extend into the slot hole (511) and be welded to the pole post (11).

14. The battery pack (B) according to claim 13, characterized in that the protruding portion (61) is in shape cooperation with the slot hole (511); and / or a bottom surface of the protruding portion (61) is in abutment with a top surface of the pole post (11); and / or a lower surface of the bar body (66) outward of the protruding portion (61) is in abutment with an upper surface of the bottom wall of the pole post mounting slot (51).

15. The battery pack (B) according to claim 13, characterized in that, an upper side of the protruding portion (61) forms a concave portion (65) concaved downward.

16. The battery pack (B) according to claim 13, characterized in that the plurality of bus bars (60) include: a first bus bar (601) including two bar bodies (66) arranged side by side in a front-rear direction, one protruding portion (61) being disposed on each of the bar bodies (66), the first bus bar (601) being configured to connect two pole posts (11) located on the same side in a left-right direction of two battery cells (10) adjacent in the front-rear direction; and / or a second busbar (602) comprising two of the tab (66) arranged along the left-right direction and staggered along the front-rear direction and a bent portion (62) connecting the two tab (66), one of the protrusion (61) is arranged on each of the tab (66), the second busbar (602) is configured to connect two of the pole (11) of the battery monomer (10) adjacent along the front-rear direction and respectively located on both sides along the left-right direction; and / or a third busbar (603) comprising one of the tab (66) and a first output pole (63) connected with the tab (66), one of the protrusion (61) is arranged on the tab (66), the third busbar (603) is configured to connect one of the pole (11) of the battery monomer (10) adjacent to the circuit board (40) and a first of the electrode connecting end (411) of the two electrode connecting end (41) of the circuit board (40); and / or a fourth busbar (604) comprising one of the tab (66) and a second output pole (64) connected with the tab (66), one of the protrusion (61) is arranged on the tab (66), the fourth busbar (604) is configured to connect one of the pole (11) of the battery monomer (10) away from the circuit board (40) and a second of the electrode connecting end (412) of the two electrode connecting end (41) of the circuit board (40).

17. The battery pack (B) according to claim 11, characterized in that, The isolation plate (50) comprises a plurality of busbar mounting grooves (52) corresponding to the plurality of busbar (60) one by one, each of the busbar (60) is mounted in the corresponding busbar mounting groove (52).

18. The battery pack (B) according to any one of claims 1 to 10, characterized in that, The battery pack (B) is a low-voltage battery pack.

19. An electrically powered device (D), characterized in that The battery pack (B) as claimed in any one of claims 1 to 18 is used to provide power for the power consumption device (D). The battery pack (B) as claimed in any one of claims 1 to 18 is used to provide power for the power consumption device (D).

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