WO2019136876A1

WO2019136876A1 - Battery pack

Info

Publication number: WO2019136876A1
Application number: PCT/CN2018/083588
Authority: WO
Inventors: 李斌; 许乃前; 张柏; 王洪波
Original assignee: 浙江动一新能源动力科技股份有限公司
Priority date: 2018-01-12
Filing date: 2018-04-18
Publication date: 2019-07-18
Also published as: CN108110154A

Abstract

A battery pack, comprising a housing (100); a frame assembly (200) provided in the housing (100), a plurality of grooves (210) arranged in a honeycomb shape being formed in the frame assembly (200); battery cells (300) provided in the grooves (210); connecting nickel sheets (400), there being a plurality of the nickel sheets, and both ends of each connecting nickel sheet (400) being provided at two adjacent battery cells (300), so that the two adjacent battery cells (300) are connected in parallel; and connecting auxiliary plates (500), connected to the connecting nickel sheets (400) and used for enabling the battery cells (300) to be connected in parallel and then to be connected in series. The battery pack is compact in structure and small in size when battery cells having the same number are arranged.

Description

Battery pack

[0001] The present invention belongs to the technical field of garden tools, and relates to a battery pack.

Background technique

[0002] The battery pack is a portable portable power source, and the battery pack has a plurality of battery cells, each of which is formed according to a certain circuit combination, and the battery cells in the battery pack are arranged in a manner to the performance and volume of the battery pack. Size has a big relationship.

[0003] For example, a Chinese patent application No. 201720511897.3 discloses a battery pack comprising: a plurality of connected nickel sheets, two ends respectively connected to adjacent two rows of cells; a plurality of connecting sub-boards, and Connected to the nickel piece, the lead of each cell is integrated on the connecting sub board; the main control board is connected to the connecting sub board through the wire to detect the control cell. The utility model provides a battery pack, wherein the battery cells in the battery pack are divided into several groups by connecting nickel sheets, and the batteries in each group are formed in series and parallel with each other, and the connecting sub-boards are connected to the connected nickel sheets. The wires between the original battery and the main control board are omitted, and the lead wires of the battery core are directly integrated on the connection sub-board, so that the lines in the battery package are clean and tidy.

[0004] The above battery pack, although the wiring is relatively clean, is not compact enough and has a large volume, so that there is a certain room for improvement.

Summary of invention

technical problem

Problem solution

Technical solution

[0005] An object of the present invention is to provide a battery pack for the above problems existing in the prior art.

[0006] The object of the present invention can be achieved by the following technical solutions: A battery pack, comprising:

[0007] a housing;

[0008] a frame assembly disposed in the housing, and the frame assembly is provided with a plurality of grooves arranged in a honeycomb shape;

[0009] a battery core disposed in the recess; [0010] connecting the nickel sheets, the number of which is several, and the two ends of the connecting nickel sheets are disposed on two adjacent ones of the batteries so that two adjacent batteries are connected in parallel;

[0011] connecting a sub-board connected to the connecting nickel piece for connecting the respective cells in parallel and then connecting in series.

[0012] Preferably, the charging board further includes a charging board disposed in the housing and connected to the connecting sub board, and the charging board is provided with a socket capable of preventing an electric spark from being generated when the insert is inserted. The socket is coupled to the battery core.

[0013] Preferably, the housing is provided with a recessed contact portion, the socket is located at a top end of the contact portion, and the air outlet is disposed on the contact portion, and the air inlet is disposed on the housing The air outlet is in communication with the interior of the housing, and hot air in the housing can be discharged through the air outlet.

[0014] Preferably, the socket includes a positive electrode slot and a negative electrode slot on the contact portion, and the positive electrode slot and the negative electrode slot are respectively provided with a positive electrode contact piece and a negative electrode contact piece, and the positive electrode contact piece There is a difference between an opening distance to the positive electrode slot and an opening distance of the negative electrode contact to the negative electrode slot, so that when the insert is inserted into the socket, the positive electrode contact and the negative electrode are touched. The film has been in contact.

[0015] Preferably, the frame assembly includes an upper bracket and an lower bracket, the upper bracket is disposed at an end of each of the batteries, and the lower bracket is disposed at a bottom of each of the batteries.

[0016] Preferably, the upper bracket and the lower bracket are respectively provided with an upper support column and a lower support column, and the upper support column is connected with the lower support column, so that the upper bracket and the upper bracket Fixed bracket connection

[0017] Preferably, the number of the cells is forty and is arranged in five columns and eight rows, and the cells of the adjacent rows are misaligned.

[0018] Preferably, a main control board is disposed in the housing, and the main control board is connected to the connection sub board.

Advantageous effects of the invention

Beneficial effect

[0019] Compared with the prior art, the beneficial effects of the present invention are:

[0020] 1. The structure is relatively compact, and the volume is relatively small when the same number of cells are used.

[0021] 2. The purpose of preventing sparking is realized by using a different socket. Only when the insert is inserted, the positive and negative inserts are sequentially connected with the positive and negative contacts in the socket, so that the insert can be avoided at the same time. Insertion produces an electric spark. [0022] 3. The battery pack is connected to the charger, and the hot air in the battery pack is sucked into the charger from the air outlet of the contact portion, and at the same time, the outside air enters the housing from the air inlet, so that the battery pack can be realized. Further, because of the compact arrangement of the cells of the present embodiment, it is required that the cooling system with higher efficiency is cooled during charging, which can greatly improve the charging efficiency and safety.

Brief description of the drawing

DRAWINGS

1 is a bottom plan view of a frame assembly and a battery core structure of the present invention.

2 is a top plan view of a frame assembly and a battery core structure of the present invention.

3 is a schematic structural view of a frame assembly of the present invention.

4 is a schematic view of a housing of the present invention.

[0027] FIG. 5 is a schematic structural view of a socket of the present invention.

[0028] In the drawings, 100, housing; 110, contact portion; 120, air outlet; 130, air inlet; 200, frame assembly; 210, groove; 220, upper bracket; 230, lower bracket; 240, upper Support column; 250, lower support column; 300, battery core; 400, connecting nickel plate; 500, connecting sub-board; 600, socket; 610, positive electrode slot; 62 0, negative electrode slot; 630, positive contact; 640, negative Contact.

Invention embodiment

Embodiments of the invention

The following is a detailed description of the technical solutions of the present invention, and the present invention is not limited to the embodiments.

[0030] As shown in FIG. 1, FIG. 2, FIG. 3, FIG. 4, FIG. 5, a battery pack includes: a housing 100, a frame assembly 20 0, a battery core 300, a connecting nickel piece 400, and a connecting sub board. 500. The battery pack has a special arrangement of the battery cells 300, so that the entire battery pack is smaller in size and more compact in structure.

[0031] Wherein, the housing 100 is the outer casing of the entire battery pack; it is worth noting here that the housing 100 can be divided into an upper shell and a lower shell, and the shells are detachably connected together.

[0032] The frame assembly 200 is disposed in the casing 100, and the frame assembly 200 is provided with a plurality of grooves 210 arranged in a honeycomb shape. Here, it is worth noting that the frame assembly 200 It is a substrate for mounting the battery cells 300 for fixing the battery cells 300 so that the battery cells 300 can be arranged in a specific structure. [0033] The battery cell 300 is disposed in the recess 210; the battery core 300 is similar to a battery, which is capable of supplying power, and the amount of power of the battery pack is proportional to the number of the battery cells 300, that is, the battery core 300 The greater the number, the stronger the battery pack's endurance, but the larger the battery pack. To solve the above problem, the battery cell 300 is mounted in the recess 210, thereby arranging the plurality of cells 300 to be similar. The honeycomb structure, further, is that the adjacent cells 300 are misaligned, and the two cells 300 in the space are flush. From a partial view, the plurality of cells 300 form a diamond structure, so the overall structure of the cell 300 More similar to a honeycomb structure.

[0034] The number of the nickel sheets 400 is connected, and the two ends of the connecting nickel pieces 400 are disposed on two adjacent cells 300 such that two adjacent cells 300 are connected in parallel. .

[0035] The sub-board 500 is connected to the connection nickel piece 400 for connecting the battery cells 300 in parallel and then in series.

[0036] This connection structure can ensure that the battery life and the size of the battery pack are maintained at an optimum value, that is, the number of the battery cells 300 in the battery pack can be maximized while ensuring a certain size of the battery pack.

[0037] As shown in FIG. 1, FIG. 2, FIG. 3, FIG. 4, and FIG. 5, in addition to the above embodiments, a charging board is further included, and the charging board is disposed in the housing 100 and is The connection sub-board 500 is connected, and the charging board is provided with a socket 600 capable of preventing an electric spark from being generated when the insertion piece is inserted, and the socket 600 is connected to the battery unit 300.

[0038] It is worth noting here that the battery pack is connected to the charger when charging, and the connection between the two is inserted into the socket 600 through the insert of the charger, but in the actual battery pack charging process. In the middle, since the positive and negative pole tabs are in contact with the socket 600 at the same time, a relatively large electric spark is generated, thereby causing a hidden danger of electric shock.

[0039] In the actual use process, the socket 600 is connected to the connection sub-board 500, thereby being indirectly connected to the battery cell 300. When the interposer is inserted into the socket 600, the charger can be connected to the battery cell 300.

[0040] Preferably, the differential socket 600 can be used to prevent the spark, and only when the insert is inserted, the positive and negative tabs are connected to the positive and negative contacts 640 in the socket 600, respectively. Avoid sparks caused by inserts inserted at the same time.

[0041] As shown in FIG. 2, FIG. 4, and FIG. 5, in addition to the above embodiment, the housing 100 is provided with a recessed contact portion 110, and the socket 600 is located at the top end of the contact portion 110. And the contact portion 110 is provided An air outlet 120 is disposed, the housing 100 is provided with an air inlet 130, the air outlet 120 communicates with the interior of the housing 100, and hot air in the housing 100 can be exhausted through the air outlet 120. .

[0042] It is worth noting here that the charger is provided with a protruding connector, the bump can be inserted into the contact portion 110, and the air outlet 120 is just connected with the connector on the charger, and the fan has a fan and a wind. The channel has a plurality of through holes communicating with the air passage. When the charger is connected to the battery pack, the air passage on the charger communicates with the air outlet 120 of the housing 100 to suck the hot air in the battery pack.

[0043] In the actual working process, the battery pack is connected to the charger, and the hot air in the battery pack is sucked into the charger from the air outlet 120 of the contact portion 110, and at the same time, the air of the outer wall enters from the air inlet 130. In the housing 100, the efficient cooling of the battery pack 300 can be achieved. Further, since the battery core 300 of the present embodiment has a compact arrangement, it requires a highly efficient cooling system to be cooled during charging. This can greatly improve charging efficiency and safety.

[0044] As shown in FIG. 4 and FIG. 5, in the above embodiment, the socket 600 includes a positive electrode slot 610 and a negative electrode slot 620 on the contact portion 110, and the positive electrode slot 610 and the negative electrode. A positive electrode contact 630 and a negative electrode contact 640 are disposed in the groove 620 respectively. The opening distance of the positive electrode contact piece 630 to the positive electrode groove 610 is between the opening distance of the negative electrode contact piece 640 and the negative electrode slot 620. The difference is such that the positive electrode contact piece 630 and the negative electrode contact piece 640 are in contact with each other when the insertion piece is inserted into the socket 600.

[0045] It is worth noting here that the positive electrode contact 630 and the negative electrode contact 640 are both formed by two concave metal pieces, and the intersection of the two metal pieces is the actual contact contact, wherein the positive contact The contacts of the strip 630 and the negative contact strip 640 are not on a horizontal line. Therefore, when the insert is inserted, the positive and negative contact strips 64 0 are contacted one after the other, thereby achieving the purpose of preventing sparking.

[0046] Preferably, in the actual socket 600, the distance between the positive electrode contact 630 and the inlet of the positive electrode slot 610 is long, and the distance between the negative electrode contact 640 and the negative electrode inlet is short, so the negative electrode tab is first contacted with the negative electrode contact 640. After continuing to insert a certain distance, the positive insert is in contact with the positive contact 630, thereby achieving the purpose of successive connections.

[0047] As shown in FIG. 1 , FIG. 2 and FIG. 3 , on the basis of the above embodiment, the frame assembly 200 includes an upper bracket 220 and a lower bracket 230 , and the upper bracket 220 is disposed on each of the batteries The lower bracket 230 is disposed at the bottom of each of the battery cells 300.

[0048] Through the above-described frame assembly 200, both ends of the battery cell 300 can be fixed, and it is also worth mentioning here. The upper bracket 220 is similar in structure to the lower bracket 230, and includes a plurality of annular rings arranged in a honeycomb shape, and adjacent annular rings are connected by strip-shaped reinforcing ribs.

[0049] As shown in FIG. 1, FIG. 2, and FIG. 3, on the basis of the above embodiment, the upper bracket 220 and the lower bracket 230 are respectively provided with an upper support post 240 and a lower support post 250. The support post 240 is coupled to the lower support post 250 such that the upper bracket 220 is fixedly coupled to the lower bracket 230.

[0050] This enables the upper bracket 220 and the lower bracket 230 to be detachably coupled. In the actual installation process, the upper bracket 220 and the lower bracket 230 are first connected to the two ends of the battery core 300, and then through the upper support column. The 240 is fixed to the lower support post 250 such that the upper bracket 220 and the lower bracket 230 are integrally connected.

[0051] Preferably, the upper bracket 220 and the lower bracket 230 are actually rectangular hollow plate-like structures, and the number of the upper support column 240 and the lower support column 250 are two, and are respectively located on both sides of the upper bracket 220 and the lower bracket 230. .

[0052] As shown in FIG. 1 and FIG. 2, on the basis of the above embodiment, the number of the battery cells 300 is forty and is arranged in five columns and eight rows, and the battery cells 300 of adjacent rows are misaligned. With this configuration, the performance of the battery pack can be maximized without significantly increasing the volume of the battery pack.

As shown in FIG. 2, in addition to the above embodiment, a main control board is disposed in the casing 100, and the main control board is connected to the connection sub-board 500.

[0054] The specific embodiments described herein are merely illustrative of the spirit of the invention. A person skilled in the art can make various modifications or additions to the specific embodiments described, or in a similar manner, without departing from the spirit of the invention or as defined by the appended claims. The scope.

Claims

Claim

[Claim 1] A battery pack, comprising:

Housing

a frame assembly disposed in the housing, and a plurality of grooves arranged in a honeycomb shape are disposed in the frame assembly;

a battery core disposed in the recess;

Connecting the nickel sheets in a plurality of numbers, and the two ends of the connecting nickel sheets are disposed on two adjacent ones of the batteries to connect the two adjacent batteries in parallel; connecting the sub-boards, The connecting nickel piece is connected, and the respective batteries are connected in parallel and then connected in series

[Claim 2] The battery pack according to claim 1, further comprising: a charging board, wherein the charging board is disposed in the housing and connected to the connection sub board, and the charging board is disposed There is a socket capable of preventing an electric spark from being generated when the blade is inserted, and the socket is connected to the battery cell.

[Claim 3] The battery pack according to claim 2, wherein: the housing is provided with a recessed contact portion, the socket is located at a top end of the contact portion, and the contact portion is disposed The air outlet is provided with an air inlet, the air outlet is in communication with the interior of the housing, and hot air in the housing can be discharged through the air outlet.

[Claim 4] The battery pack according to claim 3, wherein: the socket includes a positive electrode groove and a negative electrode groove on the contact portion, and the positive electrode groove and the negative electrode groove are respectively provided with a positive contact and a negative contact, a difference between an opening distance of the positive contact to the positive electrode slot and an opening distance of the negative contact to the negative slot, so that the insert is inserted into the socket When in the upper case, the positive electrode contact piece and the negative electrode contact piece are sequentially contacted.

[Claim 5] The battery pack according to claim 1, wherein: the frame assembly includes an upper bracket and a lower bracket, and the upper bracket is disposed at an end of each of the batteries, the lower Brackets are provided at the bottom of each of the cells.

[Claim 6] The battery pack according to claim 5, wherein: the upper bracket and the lower bracket are respectively provided with an upper support post and a lower support post, the upper support post and the The lower support post is coupled such that the upper bracket is fixedly coupled to the lower bracket.

[Claim 7] The battery pack according to claim 6, wherein: the number of the cells is forty and is arranged in five columns and eight rows, and the cells of the adjacent rows are misaligned.

[Claim 8] The battery pack according to claim 1, wherein: a main control board is disposed in the housing, and the main control board is connected to the connection sub board.