Battery energy storage device

Abstract

The utility model discloses a battery energy storage device, which comprises a shell and a plurality of battery modules, the plurality of battery modules are accommodated in a storage cavity formed by the shell, the plurality of battery modules are sequentially arranged from bottom to top along the height direction of the shell, and a target distance is arranged between every two adjacent battery modules. Every two adjacent battery modules are supported and separated through a separation frame, each battery module is formed by arranging a plurality of battery units in parallel, every two adjacent battery units are connected through a connecting piece, a plurality of through holes are formed in the connecting piece, and each through hole corresponds to one electrode end of one battery unit. The vertical space can be fully utilized, the number of the battery modules is effectively increased, the energy storage amount is increased, the air circulation effect can be improved, the heat dissipation effect can be improved, and the transportation safety of the device can also be improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the battery technical field, concretely relates to a battery energy storage device. BACKGROUND

[0002] With the development of renewable energy technology and the increasing emphasis on environmental protection, battery energy storage technology plays an increasingly important role in energy management and distributed power systems. Battery energy storage devices can effectively store and release electrical energy, balance power supply and demand, and improve the stability and reliability of the power grid. However, traditional battery energy storage devices still face many challenges in terms of structural design and performance optimization.

[0003] Traditional battery energy storage devices have low space utilization, poor heat dissipation, and low transportation safety and reliability. SUMMARY

[0004] In view of the deficiencies of the prior art, the utility model aims to provide a battery energy storage device to solve the problems of low energy storage and poor heat dissipation in the prior art.

[0005] Specifically, the present application provides a battery energy storage device, which comprises a shell and a plurality of battery modules. The plurality of battery modules are accommodated in the storage cavity formed in the shell, and the plurality of battery modules are arranged in the height direction of the shell from bottom to top. The target distance is separated between the adjacent two battery modules, and the adjacent two battery modules are supported and separated by the partition frame. Each battery module is composed of a plurality of battery cells arranged side by side, and the adjacent two battery cells are connected by a connecting sheet. A plurality of through holes are provided on the connecting sheet, and each through hole corresponds to an electrode end of a battery cell.

[0006] In some embodiments, an auxiliary mounting sheet is provided between the two rows of electrodes of each battery module. An external data line port and a wall hanging auxiliary part are provided on the shell. The battery energy storage device is connected to an external device through a data line, and the shell is hung on a target device through the wall hanging auxiliary part.

[0007] In some embodiments, the material of the battery cell is lithium iron phosphate battery material, the ignition point of the battery cell is 500 degrees, and the energy density ratio of the battery cell is 116 Wh / Kg.

[0008] In some embodiments, the plurality of battery modules are connected in series.

[0009] In some embodiments, the battery module comprises a battery first module, a battery second module, a battery third module and a battery fourth module arranged from bottom to top along the height direction of the shell.

[0010] In some embodiments, a total negative electrode exists on the battery first module, the total negative electrode is connected to a total negative electrode terminal of the mainboard through a first total collection line, a total positive electrode exists on the battery fourth module, the total positive electrode is connected to the total negative electrode terminal of the mainboard through a second total collection line after being connected to a circuit breaker.

[0011] In some embodiments, the total negative electrode terminal includes a JP14 terminal and a JP13 terminal, both of which are screw terminals, and the total positive electrode terminal includes a JP12 terminal and a JP11 terminal, both of which are screw terminals.

[0012] In some embodiments, the battery first module and the battery second module are respectively connected to a JA1 connector of the mainboard through a first line collection group and a second line collection group to transmit first data to the mainboard, and the battery third module and the battery fourth module are respectively connected to a JA2 connector of the mainboard through a third line collection group and a fourth line collection group to transmit second data to the mainboard.

[0013] In some embodiments, the first line collection line group includes a plurality of first collection lines, the second line collection group includes a plurality of second collection lines, each of the first collection lines and each of the second collection lines is connected to a pin on the JA1 connector, the third line collection group includes a plurality of third collection lines, and the fourth line collection group includes a plurality of fourth collection lines, each of the third collection lines and each of the fourth collection lines is connected to a pin on the JA2 connector.

[0014] In some embodiments, the JA1 connector includes pins B-, B0, B1, B2, B3, B4, B5, B6, B7, and B8, and the JA2 connector includes B9, B10, B11, B12, B13, B14, B15, B16, and B+, the pin B- and the pin B0 are connected to the total negative electrode on the battery first module through a first collection line, and the pin B16 and the pin B+ are connected to the total positive electrode on the battery fourth module through a fourth collection line.

[0015] The application includes but is not limited to the following beneficial effects: (1) In the application, a plurality of battery modules are arranged in sequence from bottom to top along the height direction of the shell, making full use of the vertical space, improving the space utilization efficiency, effectively increasing the number of battery modules, and improving the energy storage capacity of the device; (2) There is a target distance between adjacent battery modules, which is supported by the partition frame, which helps to optimize the internal layout, prevents direct contact between the battery modules, and improves the safety and reliability of the system; and after the interval is separated, the heat dissipation channel between the two adjacent battery modules improves the heat dissipation effect, prevents overheating, thereby prolonging the battery life and improving the system stability; (3) The partition frame provides additional structural support to ensure the stability of the battery modules in the shell, preventing displacement or vibration during transportation or use, and enhancing the safety of the overall structure; (4) Each battery module is based on a plurality of battery cells arranged side by side, facilitating modular management and maintenance. When problems occur, individual modules can be replaced or repaired without replacing the entire device, reducing maintenance costs; (5) By setting the wall-hanging auxiliary part, the device is conveniently hung; (6) In the application, lithium iron phosphate batteries are selected, and the ignition point can reach 500 degrees. Compared with other lithium ion batteries (such as ternary lithium batteries), it has higher thermal stability. In a high-temperature environment or when the battery overheats, the lithium iron phosphate battery is not easy to burn or explode, significantly improving the safety of the energy storage device, and the lithium iron phosphate material has high chemical stability and is not easy to cause thermal runaway or violent reaction, further reducing the safety risk; (7) By setting the total negative electrode and the total positive electrode in the first battery module and the fourth battery module respectively, and connecting the first total collection line and the second total collection line to the total negative electrode terminal and the total positive electrode terminal of the mainboard, the electrical connection layout of the battery module is optimized. This design reduces the complexity of internal connection, helps to reduce resistance loss, and improves the efficiency of power transmission; (8) The battery module is connected to the JA1 and JA2 connectors of the mainboard through a plurality of collection line groups, realizing accurate data collection. Each collection line corresponds to a pin, ensuring accurate transmission of battery voltage and state data, which helps to monitor and manage the battery state in real time, and improves the intelligence and monitoring capability of the system; (9) The total positive electrode is connected to the mainboard through the second total collection line and the circuit breaker, which increases a layer of safety protection. The circuit breaker can quickly disconnect the circuit when overloaded or short-circuited, preventing system damage or safety accidents, and improving the safety of the overall system. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description.

[0017] Figure 1 is a structural schematic diagram of the battery energy storage device;

[0018] Figure 2This is a planar schematic diagram of the battery energy storage device described in this utility model from one angle;

[0019] Figure 3 This is an internal schematic diagram of the battery energy storage device described in this utility model;

[0020] Figure 4 This is the electrical wiring diagram of the battery energy storage device described in this utility model;

[0021] In the diagram, 1-housing, 11-external data cable port, 12-wall mounting accessory, 2-battery module, 21-first battery module, 22-second battery module, 23-third battery module, 24-fourth battery module, 25-battery unit, 26-total negative terminal, 27-total positive terminal, 3-separator, 4-connecting piece, 5-auxiliary mounting piece, 6-circuit breaker. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0023] Specifically, this application provides a battery energy storage device, see reference. Figures 1 to 4As shown, the battery energy storage device includes a shell 1 and a plurality of battery modules 2, the plurality of battery modules 2 are arranged in the storage cavity formed in the shell 1, the plurality of battery modules 2 are arranged in the height direction of the shell 1 from bottom to top, and the target distance is arranged between the adjacent two battery modules 2, and the adjacent two battery modules 2 are supported and separated by the partition frame 3. Each battery module 2 is composed of a plurality of battery cells 25 arranged side by side, and the adjacent two battery cells 25 are connected by the connecting sheet 4, and a plurality of through holes are formed on the connecting sheet 4, and each through hole corresponds to one electrode end of one battery cell 25. Wherein, the target distance can be 100mm-300mm, and the specific target distance value can be determined according to actual demand. In the application embodiment, the plurality of battery modules 2 are arranged in the height direction of the shell 1 from bottom to top, which fully utilizes the vertical space, improves the space utilization efficiency, can effectively increase the number of battery modules 2, improves the energy storage capacity of the device, further, the target distance is arranged between the adjacent battery modules 2, which is supported and separated by the partition frame 3, which helps to optimize the internal layout, prevents the battery modules 2 from directly contacting, improves the safety and reliability of the system; and after the interval separation, the heat dissipation channel between the adjacent two battery modules 2 improves the heat dissipation effect, prevents overheating, thereby prolongs the battery life and improves the system stability, further, the partition frame 3 provides additional structural support to ensure the stability of the battery modules 2 in the shell 1, prevents displacement or vibration during transportation or use, enhances the safety of the overall structure, further, each battery module 2 is composed of a plurality of battery cells 25 arranged side by side, which is convenient for modular management and maintenance. When problems occur, a certain module can be replaced or repaired individually without replacing the entire device, reducing maintenance cost.

[0024] In some embodiments, continuing to refer to Figure 3 , an auxiliary mounting sheet 5 is further arranged between the two rows of electrodes of each battery module 2, the shell is provided with an external data line port 11 and a wall hanging auxiliary part 12, the battery energy storage device is connected with external equipment through the data line, and the shell is hung on the target device through the wall hanging auxiliary part 12. It can be understood that the wall hanging auxiliary part 12 is arranged, which is convenient for hanging the device. Further, the auxiliary mounting sheet 5 is arranged between the two rows of electrodes, which can increase the stability of the parallel arrangement of the battery cells 25.

[0025] In some embodiments, the material of the battery unit 25 is a lithium iron phosphate battery material, the ignition point of the battery unit 25 is 500 degrees, and the energy density of the battery unit 25 is 116 Wh / Kg. The lithium iron phosphate battery has an ignition point of 500 degrees, which has higher thermal stability than other lithium ion batteries (such as ternary lithium batteries). In a high-temperature environment or when the battery overheats, the lithium iron phosphate battery is not easy to burn or explode, significantly improving the safety of the energy storage device, and the lithium iron phosphate material has high chemical stability and is not easy to cause thermal runaway or violent reaction, further reducing the safety risk.

[0026] In some embodiments, a plurality of battery modules 2 are connected in series.

[0027] In some embodiments, referring to Figure 3 , the battery module 2 includes a first battery module 21, a second battery module 22, a third battery module 23, and a fourth battery module 24 arranged from bottom to top along the height direction of the shell 1.

[0028] In some embodiments, referring to Figure 4 , the first battery module 21 has a total negative electrode 26, and the total negative electrode 26 is connected to the total negative electrode 26 terminal of the mainboard through the first total collection line. The fourth battery module 24 has a total positive electrode 27, and the total positive electrode 27 is connected to the total positive electrode 27 terminal of the mainboard after being connected to the circuit breaker 6 through the second total collection line. By arranging the total negative electrode 26 and the total positive electrode 27 on the first battery module 21 and the fourth battery module 24 respectively, and connecting them to the total negative electrode 26 terminal and the total positive electrode 27 terminal of the mainboard through the first total collection line and the second total collection line, the electrical connection layout of the battery module 2 is optimized. This design reduces the complexity of internal connection, helps to reduce resistance loss, and improves the efficiency of electrical energy transmission. Further, the total positive electrode 27 is connected to the total positive electrode 27 terminal of the mainboard after being connected to the circuit breaker 6 through the second total collection line, which adds a layer of safety protection. The circuit breaker 6 can quickly disconnect the circuit when overloaded or short-circuited, preventing system damage or causing safety accidents, and improving the safety of the overall system.

[0029] In some embodiments, the total negative electrode 26 terminal includes a JP14 terminal and a JP13 terminal, both of which are screw terminals. The total positive electrode 27 terminal includes a JP12 terminal and a JP11 terminal, both of which are screw terminals.

[0030] In some embodiments, the battery first module 21 and the battery second module 22 are connected to the JA1 connector of the mainboard through the first line collection group and the second line collection group respectively to transmit first data to the mainboard, and the battery third module 23 and the battery fourth module 24 are connected to the JA2 connector of the mainboard through the third line collection group and the fourth line collection group respectively to transmit second data to the mainboard, wherein the first data can include first voltage data, first temperature data, etc., and the second data can include second voltage data, second temperature data, etc.

[0031] It can be understood that in the embodiment, the battery module 2 is connected to the JA1 and JA2 connectors of the mainboard through a plurality of collection line groups to realize accurate data collection. Each collection line corresponds to a pin, which ensures accurate transmission of battery voltage and state data, helps to monitor and manage the battery state in real time, and improves the intelligence and monitoring capability of the system.

[0032] In some embodiments, the first line collection line group includes a plurality of first collection lines, the second line collection group includes a plurality of second collection lines, each of the first collection lines and each of the second collection lines is connected to a pin on the JA1 connector, the third line collection group includes a plurality of third collection lines, and the fourth line collection group includes a plurality of fourth collection lines, each of the third collection lines and each of the fourth collection lines is connected to a pin on the JA2 connector.

[0033] In some embodiments, the JA1 connector includes pins B-, B0, B1, B2, B3, B4, B5, B6, B7, and B8, and the JA2 connector includes B9, B10, B11, B12, B13, B14, B15, B16, and B+, the pin B- and the pin B0 are connected to the total negative electrode 26 on the battery first module 21 through the first collection line, and the pin B16 and the pin B+ are connected to the total positive electrode 27 on the battery fourth module 24 through the fourth collection line.

[0034] The basic principle, main features and advantages of the utility model are shown and described above. It should be understood by those skilled in the art that the utility model is not limited by the above embodiments, and the above embodiments and descriptions in the specification are only to illustrate the principle of the utility model, and various changes and improvements can be made to the utility model without departing from the spirit and scope of the utility model, and these changes and improvements all fall within the scope of the utility model claimed.

Claims

1. A battery energy storage device, characterized in that, The device includes a housing (1) and multiple battery modules (2). The multiple battery modules (2) are housed in the storage cavity formed by the housing (1). The multiple battery modules (2) are arranged sequentially from bottom to top along the height direction of the housing (1). There is a target distance between two adjacent battery modules (2). Two adjacent battery modules (2) are supported and separated by a partition frame (3). Each battery module (2) is composed of multiple battery cells (25) arranged side by side. Two adjacent battery cells (25) are connected by a connecting piece (4). The connecting piece (4) has multiple through holes, and each through hole corresponds to one terminal of a battery cell (25).

2. The battery energy storage device according to claim 1, characterized in that, Each battery module (2) is provided with an auxiliary mounting plate (5) between the two rows of electrodes. The housing is provided with an external data cable port (11) and a wall-mounting auxiliary component (12). The battery energy storage device is connected to an external device via a data cable. The housing is mounted on the target device via the wall-mounting auxiliary component (12).

3. The battery energy storage device according to claim 1, characterized in that, The battery cell (25) is made of lithium iron phosphate battery material, the ignition point of the battery cell (25) is 500 degrees, and the energy density of the battery cell (25) is 116Wh / Kg.

4. The battery energy storage device according to claim 1, characterized in that, Multiple battery modules (2) are connected in series.

5. The battery energy storage device according to claim 4, characterized in that, The battery module (2) includes a first battery module (21), a second battery module (22), a third battery module (23), and a fourth battery module (24) arranged from bottom to top along the height direction of the housing (1).

6. The battery energy storage device according to claim 5, characterized in that, The first battery module (21) has a total negative terminal (26), which is connected to the total negative terminal (26) of the main board via a first total acquisition line. The fourth battery module (24) has a total positive terminal (27), which is connected to the total positive terminal (27) of the main board via a second total acquisition line connected to the circuit breaker (6).

7. The battery energy storage device according to claim 6, characterized in that, The total negative terminal (26) includes a JP14 terminal and a JP13 terminal, both of which are screw terminals. The total positive terminal (27) includes a JP12 terminal and a JP11 terminal, both of which are screw terminals.

8. The battery energy storage device according to claim 6, characterized in that, The first battery module (21) and the second battery module (22) are respectively connected to the JA1 connector of the motherboard through the first acquisition group and the second acquisition group to transmit first data and first voltage to the motherboard. The third battery module (23) and the fourth battery module (24) are respectively connected to the JA2 connector of the motherboard through the third acquisition group and the fourth acquisition group to transmit second data to the motherboard.

9. The battery energy storage device according to claim 8, characterized in that, The first acquisition group includes multiple first acquisition lines, the second acquisition group includes multiple second acquisition lines, each of the first acquisition lines and each of the second acquisition lines is connected to a pin on the JA1 connector, the third acquisition group includes multiple third acquisition lines, and the fourth acquisition group includes multiple fourth acquisition lines, each of the third acquisition lines and each of the fourth acquisition lines is connected to a pin on the JA2 connector.

10. The battery energy storage device according to claim 9, characterized in that, The JA1 connector includes pins B-, B0, B1, B2, B3, B4, B5, B6, B7, and B8. The JA2 connector includes pins B9, B10, B11, B12, B13, B14, B15, B16, and B+. Pins B- and B0 are connected to the total negative terminal (26) of the first battery module (21) via a first acquisition line. Pins B16 and B+ are connected to the total positive terminal (27) of the fourth battery module (24) via a fourth acquisition line.

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