Energy storage battery pack

Abstract

The utility model discloses an energy storage battery pack which comprises a shell and a pack cover which are mutually covered, at least two battery packs are arranged in the shell, and at least two batteries are arranged in each battery pack; the anodes of the batteries in the same battery pack are connected by the same anode copper bar, and the cathodes of the batteries in the same battery pack are connected by the same cathode copper bar; the positive electrode copper bar and the negative electrode copper bar are of arch bridge structures, and the part between two connecting points connected with the battery is higher than the part at the connecting point connected with the battery. According to the energy storage battery pack disclosed by the utility model, the anode copper bar and the cathode copper bar are designed into the arch bridge structures, and the part between the two connecting points connected with the battery is higher than the part at the connecting point connected with the battery, so that the influence of vibration on the pack in the transportation process is reduced, and the safety is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of energy storage batteries, and particularly relates to an energy storage battery Pack. Background Art

[0002] At present, with the development of renewable energy such as photovoltaic power generation, how to store electric energy has become a new research direction.

[0003] Generally, a Pack of energy storage batteries includes multiple batteries. The multiple batteries are combined to form the form of a Pack, and then the Packs are combined to obtain a larger capacity. Therefore, the structure of the Pack is the basis of energy storage, and the performance stability of the Pack is very crucial.

[0004] The positive electrodes of the batteries in a Pack are connected by a positive copper busbar, and the negative electrodes are connected by a negative copper busbar. The vibration during transportation will affect the Pack. If the structure of the copper busbar is unreasonable, there may be safety problems during transportation.

[0005] For example, the invention application with the publication number of CN117996315A discloses a structure of an energy storage battery pack, including a battery pack body, a positive connection component, and a negative connector socket. The battery pack body includes a box body, a battery cell module arranged in the box body, and a module end plate arranged at the end of the battery cell module. A battery cell positive bus connection piece is arranged on the module end plate. The positive electrode of the battery cell module is electrically connected to the battery cell positive bus connection piece. A wire passing hole is arranged on the side wall of the box body; the positive connection component includes a power cable. One end of the power cable is provided with a negative power connector, and the other end extends into the interior of the box body through the wire passing hole and is electrically connected to the battery cell positive bus connection piece; the negative connector socket is adapted to the negative power connector, and the negative connector socket is electrically connected to the negative electrode of the battery cell module. One end of the power cable extending into the interior of the box body is provided with a copper busbar, and the copper busbar is connected to the battery cell positive bus connection piece through a fixing bolt. In this prior art, the copper busbar is a long strip-shaped structure. During transportation, there is a lack of buffering during vibration, and it is easy to damage the connection points. Content of the Utility Model

[0006] The utility model aims at the above deficiencies existing in the prior art and provides an energy storage battery Pack.

[0007] An energy storage battery Pack includes a housing and a cover that cover each other. At least two battery packs are arranged in the housing, and at least two batteries are arranged in each battery pack;

[0008] The positive electrodes of the batteries in the same battery pack are connected by the same positive copper busbar, and the negative electrodes are connected by the same negative copper busbar;

[0009] The top surface of the package cover is provided with a main positive line lead-out end and a main negative line lead-out end. Each positive copper bar is connected to the main positive line lead-out end after being aggregated by a positive cable, and each negative copper bar is connected to the main negative line lead-out end after being aggregated by a negative cable.

[0010] The positive copper bar and the negative copper bar are in an arch structure, and the part between the two connection points connected to the battery is higher than the part at the connection points connected to the battery.

[0011] Preferably, in the arch structure of the positive copper bar and the negative copper bar, the part between the two connection points connected to the battery and the part at the connection points connected to the battery form a 90° fold angle through bending.

[0012] Preferably, there are 2 battery packs in the housing. Each battery pack includes three batteries. The batteries in the same battery pack are arranged in a row at intervals in one direction, and the two battery packs are arranged at intervals in another direction.

[0013] More preferably, the main positive line lead-out end and the main negative line lead-out end on the top surface of the package cover are arranged at one end along the arrangement direction of the two battery packs.

[0014] On the bottom surface of the inner cavity of the housing, on the side where the main positive line lead-out end and the main negative line lead-out end are located, and between the two battery packs, there are limiting members.

[0015] Further preferably, the limiting member is in a frame structure, including a frame with upper and lower openings. Between the two sides of the frame that abut against the battery or the inner cavity side wall of the housing, there are support ribs arranged at intervals.

[0016] Further preferably, the limiting member is adhesively bonded to the bottom surface of the inner cavity of the housing through an EVA double-sided adhesive.

[0017] More preferably, there is a gap for the positive cable or the negative cable to pass through between two adjacent batteries in the same battery pack.

[0018] Preferably, the bottom surfaces of the batteries in each battery pack are adhesively bonded to the bottom surface of the inner cavity of the housing through an EVA double-sided adhesive.

[0019] Preferably, handles for easy handling are provided on the outer side walls of the housing on the opposite sides along the length direction.

[0020] By designing the positive copper bar and the negative copper bar of the energy storage battery Pack of the present utility model into an arch structure, the part between the two connection points connected to the battery is higher than the part at the connection points connected to the battery, which reduces the influence of vibration on the Pack during transportation and increases safety. Description of the Drawings

[0021] Figure 1This is a schematic three-dimensional structure diagram of the energy storage battery Pack of the present utility model.

[0022] Figure 2 This is a schematic side view structure diagram of the energy storage battery Pack of the present utility model.

[0023] Figure 3 is Figure 2 The cross-sectional view along the A-A direction in

[0024] Figure 4 is Figure 2 The cross-sectional view along the B-B direction in

[0025] Figure 5 This is a schematic top view structure diagram of the energy storage battery Pack of the present utility model.

[0026] Figure 6 is Figure 5 The cross-sectional view along the C-C direction in

[0027] Reference numerals: housing 1, cover 2, battery 3, positive copper busbar 4, negative copper busbar 5, total positive line lead-out end 6, total negative line lead-out end 7, positive cable 8, negative cable 9, frame 10, support rib 11, EVA double-sided tape 12, handle 13, EVA foam block 14. Detailed implementation manners

[0028] As Figures 1 to 6 shown, an energy storage battery Pack includes a housing 1 and a cover 2 that are covered with each other. At least two battery packs are provided in the housing 1, and at least two batteries 3 are provided in each battery pack.

[0029] The number of battery packs included in the energy storage battery Pack of the present application and the number of batteries included in each battery pack can be adjusted according to actual situations. In the structure shown in the figure, two battery packs are provided in the housing 1, and each battery pack includes three batteries 3. The batteries 3 in the same battery pack are arranged in a row at intervals in one direction, and the two battery packs are arranged at intervals in another direction.

[0030] As Figure 3 and Figure 4 shown, the positive electrodes of the batteries 3 in the same battery pack are connected by the same positive copper busbar 4, and the negative electrodes are connected by the same negative copper busbar 5.

[0031] The positive copper busbar 4 and the negative copper busbar 5 are in an arch structure, and the part between the two connection points connected to the battery 3 is higher than the part at the connection points connected to the battery 3. In a preferred embodiment, in the arch structure of the positive copper busbar 4 and the negative copper busbar 5, the part between the two connection points connected to the battery 3 and the part at the connection points connected to the battery 3 form a 90° bend angle through bending.

[0032] During transportation, the battery pack may cause the copper busbars to be pulled due to vibration, which affects the battery performance. By designing the positive copper busbar 4 and the negative copper busbar 5 into an arch structure, the ability of the copper busbar to resist vibration deformation is increased, which can play a better buffering role, reduce the impact of vibration on the Pack during transportation, and increase safety.

[0033] On the top surface of the cover 2 of the Pack, there are a positive main line lead-out terminal 6 and a negative main line lead-out terminal 7. Each positive copper busbar 4 is connected to the positive main line lead-out terminal 6 after being aggregated through a positive cable 8, and each negative copper busbar 5 is connected to the negative main line lead-out terminal 7 after being aggregated through a negative cable 9.

[0034] The positive main line lead-out terminal 6 and the negative main line lead-out terminal 7 on the top surface of the cover 2 of the Pack are arranged at one end along the arrangement direction of the two battery packs. There is a gap for the positive cable 8 or the negative cable 9 to pass through between two adjacent batteries 3 of the same battery pack. Above the middle of this gap, there is an EVA foam block 14, and the top surface of the EVA foam block 14 abuts against the cover 2 of the Pack. This gap can prevent the positive cable 8 or the negative cable 9 from being randomly placed inside the Pack, greatly reducing the probability of cable friction and damage. The EVA foam block 14 makes the battery pack fit tightly with the cover 2 of the Pack, preventing the battery pack from vibrating up and down, and the foam has good softness, preventing the battery from bumping against the cover 2 during transportation.

[0035] As Figure 3 、 Figure 4 、 Figure 6 shown, the bottom surface of the inner cavity of the housing 1 is located on the side where the positive main line lead-out terminal 6 and the negative main line lead-out terminal 7 are located, and a limiting member is provided between the two battery packs. The limiting member is of a frame structure, including a frame 10 with upper and lower openings. Between the two sides where the frame 10 abuts against the battery 3 or the inner cavity side wall of the housing 1, support ribs 11 are arranged at intervals. The limiting member is adhered to the bottom surface of the inner cavity of the housing 1 through an EVA double-sided adhesive 12. The limiting member is used to help fix the battery pack in the Pack to prevent safety problems caused by the battery pack being bumped.

[0036] The bottom surface of each battery 3 in the battery pack is adhered to the bottom surface of the inner cavity of the housing 1 through an EVA double-sided adhesive. As Figure 6 shown, the EVA double-sided adhesive 12 used for bonding the limiting member is relatively wide, and the battery 3 also uses this EVA double-sided adhesive 12 to bond to the bottom surface of the inner cavity of the housing 1.

[0037] During the transportation of the energy storage battery Pack, displacement, vibration, and bumping are inevitable. Therefore, it is necessary to use EVA double-sided adhesive to fix the two battery packs, apply AB glue in the glue groove of the cover 2 to bond with the housing 1, and the EVA glue adopts a hexagonal bonding method (the bottom surface of the battery pack and the two sides in the length direction of the battery pack, a total of 6 surfaces for the two battery packs), so that the housing 1 and the cover 2 are not easily separated, and at the same time, a certain amount of gap is left to facilitate the discharge of the gas generated during the operation of the battery.

[0038] On the outer side walls of the two opposite sides of the housing 1 along the length direction, handles 13 convenient for carrying are provided. An exhaust hole is provided on the cover 2 for discharging hydrogen generated during the operation of the battery. Figure 5 The middle of the middle cover 2 is the exhaust hole.

Claims

1. A storage battery Pack, characterized in that, It includes a housing and a cover that are mutually covered. At least two battery packs are provided inside the housing, and at least two batteries are provided in each battery pack. The positive electrodes of the batteries in the same battery pack are connected by the same positive copper busbar, and the negative electrodes are connected by the same negative copper busbar. A total positive line lead-out terminal and a total negative line lead-out terminal are provided on the top surface of the cover. Each positive copper busbar is connected to the total positive line lead-out terminal after being aggregated by a positive cable, and each negative copper busbar is connected to the total negative line lead-out terminal after being aggregated by a negative cable. The positive copper busbar and the negative copper busbar are of an arch structure, and the part between the two connection points connected to the battery is higher than the part at the connection points connected to the battery.

2. The energy storage battery Pack according to claim 1, wherein, In the arch structure of the positive copper busbar and the negative copper busbar, the part between the two connection points connected to the battery and the part at the connection points connected to the battery form a 90° bend angle through bending.

3. The energy storage battery Pack according to claim 1, characterized in that There are two battery packs inside the housing, and each battery pack includes three batteries. The batteries in the same battery pack are arranged in a row at intervals in one direction, and the two battery packs are arranged at intervals in another direction.

4. The energy storage battery Pack according to claim 3, characterized in that, The total positive line lead-out terminal and the total negative line lead-out terminal on the top surface of the cover are provided at one end along the arrangement direction of the two battery packs. On the bottom surface of the inner cavity of the housing on the side where the total positive line lead-out terminal and the total negative line lead-out terminal are located, and between the two battery packs, a limiting member is provided.

5. The energy storage battery Pack according to claim 4, wherein The limiting member is of a frame structure and includes a frame with upper and lower openings. Support ribs are provided at intervals between the two sides of the frame that abut against the inner cavity side wall of the battery or the housing.

6. The energy storage battery Pack according to claim 4, characterized in that, The limiting member is adhered to the bottom surface of the inner cavity of the housing through an EVA double-sided adhesive.

7. The energy storage battery Pack according to claim 3, wherein, There is a gap for the positive cable or the negative cable to pass through between two adjacent batteries in the same battery pack.

8. The energy storage battery Pack according to claim 1, characterized in that, The bottom surfaces of the batteries in each battery pack are adhered to the bottom surface of the inner cavity of the housing through an EVA double-sided adhesive.

9. The energy storage battery Pack according to claim 1, wherein Handles for easy handling are provided on the outer side walls of the housing on the two opposite sides along the length direction.

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