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CN-224217521-U - Data acquisition assembly for battery cell and battery pack

CN224217521UCN 224217521 UCN224217521 UCN 224217521UCN-224217521-U

Abstract

The utility model provides a data acquisition assembly for a battery cell and a battery pack. The data acquisition assembly for the battery cell comprises a first printed circuit board, a second printed circuit board and a second positive electrode connection terminal, wherein the first printed circuit board comprises a first circuit board, a first negative electrode connection terminal and a first positive electrode connection terminal, the first negative electrode connection terminal and the first positive electrode connection terminal are arranged at two opposite ends of the first circuit board in the first direction so as to be capable of acquiring voltage information of the battery cell, the second printed circuit board comprises a second circuit board, the second negative electrode connection terminal and the second positive electrode connection terminal are respectively arranged on the second circuit board, the first negative electrode connection terminal and the second positive electrode connection terminal are sequentially arranged along the second direction, an included angle is formed between the second direction and the first direction, acquisition lines are arranged in the first circuit board and the second circuit board, an antenna bus is arranged along the second direction and is correspondingly arranged with the acquisition lines in the vertical direction, and the antenna bus is in communication connection with the acquisition lines. In the technical scheme of the utility model, the antenna bus is shorter in length and lower in production cost.

Inventors

  • Ding Xuebei

Assignees

  • 合肥国轩高科动力能源有限公司

Dates

Publication Date
20260508
Application Date
20250515

Claims (14)

  1. 1. A data acquisition assembly for a battery cell, comprising: the first printed circuit board (1) comprises a first circuit board (10), a first negative electrode connecting terminal (11) and a first positive electrode connecting terminal (12), wherein the first negative electrode connecting terminal (11) and the first positive electrode connecting terminal (12) are arranged at two opposite ends of the first circuit board (10) in a first direction, and the first printed circuit board (1) can collect voltage information of an electric core; The second printed circuit board (2) comprises a second circuit board (20), a second negative electrode connecting terminal (21) and a second positive electrode connecting terminal (22) which are respectively arranged on the second circuit board (20), wherein the first negative electrode connecting terminal (11) and the second positive electrode connecting terminal (22) are sequentially arranged along a second direction so as to be capable of collecting voltage information of another battery cell, and an included angle is formed between the second direction and the first direction; and the antenna bus (4) is arranged along the second direction and is correspondingly arranged with the acquisition line in the vertical direction, and the antenna bus (4) is in communication connection with the acquisition line.
  2. 2. The data acquisition assembly for a battery cell according to claim 1, wherein the first printed circuit board (1) further comprises a first electronic component (13) electrically connected with the first circuit board (10), the first electronic component (13) being arranged at the positive end of the first circuit board (10), the second printed circuit board (2) further comprises a second electronic component (23) electrically connected with the second circuit board, and the second electronic component (23) is arranged at the negative end of the second circuit board (20).
  3. 3. The data acquisition assembly for the battery cell according to claim 1, wherein a first acquisition line is arranged in the first circuit board (10), a second acquisition line is arranged in the second circuit board (20), the first acquisition line is positioned at the positive end of the first circuit board (10), the second acquisition line is positioned at the negative end of the second circuit board (20), and the antenna bus (4) is respectively connected with the first acquisition line and the second acquisition line in a wireless communication manner.
  4. 4. The data acquisition assembly for a battery cell according to claim 1, further comprising a limit structure provided on an arrangement path of the antenna bus (4) so that the antenna bus (4) is disposed in parallel with the acquisition line.
  5. 5. The data acquisition assembly for a battery cell of claim 4, wherein the limit structure comprises: The first limiting piece is arranged on the first circuit board (10), and at least one side of a first acquisition line in the first circuit board (10) is provided with the first limiting piece; the second limiting piece is arranged on the second circuit board (20), and at least one side of a second acquisition line in the second circuit board (20) is provided with the second limiting piece.
  6. 6. The data acquisition assembly for a battery cell according to claim 5, wherein at least one of the first limiting member and the second limiting member comprises an elastic mounting member (30), a limiting groove (31) is formed in the elastic mounting member (30), and the antenna bus (4) is clamped in the limiting groove (31).
  7. 7. The data acquisition assembly for a cell of claim 6, wherein, The elastic mounting piece (30) is provided with a bulge (32), at least one of the first printed circuit board (1) and the second printed circuit board (2) is provided with a mounting hole, the elastic mounting piece (30) is clamped with the mounting hole through the bulge (32), or The notch of the limiting groove (31) is provided with a stop piece (33) for preventing the antenna bus (4) from falling out of the limiting groove (31).
  8. 8. The data acquisition assembly for a battery cell according to claim 5, wherein the number of the first limiting members is two, the first acquisition line and the first electronic component are located between the two first limiting members in the second direction, and/or the number of the second limiting members is two, and the second acquisition line and the second electronic component are located between the two second limiting members in the second direction.
  9. 9. The data acquisition assembly for a battery cell according to claim 5, wherein the first limiting member and the first acquisition wire are both disposed at an anode end of the first circuit board (10), and the second limiting member and the second acquisition wire are both disposed at a cathode end of the second circuit board (20).
  10. 10. The data acquisition assembly for a battery cell according to any one of claims 1 to 9, wherein through holes for avoiding explosion-proof valves of the battery cell are arranged on the first circuit board (10) and/or the second circuit board (20).
  11. 11. The data acquisition assembly for a battery cell according to any one of claims 1 to 9, wherein the first negative electrode connection terminal (11) and the first positive electrode connection terminal (12) are Z-shaped nickel pieces, or the second negative electrode connection terminal (21) and the second positive electrode connection terminal (22) are Z-shaped nickel pieces.
  12. 12. The data acquisition assembly for a battery cell according to any one of claims 1 to 9, wherein the first negative electrode connection terminal (11) and the second negative electrode connection terminal (21) are each provided with an installation notch, and the data acquisition assembly for a battery cell further comprises a first temperature sensor provided on the first circuit board (10) and a second temperature sensor provided on the second circuit board (20), the first temperature sensor and the second temperature sensor being respectively provided at the corresponding installation notches in a vertical direction.
  13. 13. A battery pack, characterized by comprising a battery cell group and the data acquisition assembly for battery cells according to any one of claims 1 to 12, wherein the battery cell group comprises a plurality of battery cells (5) which are sequentially arranged along the second direction and are connected in series, and one battery cell (5) is electrically connected with the first printed circuit board (1) and the other battery cell (5) is electrically connected with the second printed circuit board (2) in any two adjacent battery cells (5).
  14. 14. The battery pack according to claim 13, wherein the number of the first printed circuit boards (1) and the number of the second printed circuit boards (2) are multiple, the first printed circuit boards (1) and the second printed circuit boards (2) are alternately arranged, the positive electrode of a first cell is connected with the negative electrode of a second cell through a first connecting pole piece (6), the negative electrode of the first cell is connected with a second connecting pole piece (7), the second positive electrode connecting terminal is connected with the first connecting pole piece (6), the first circuit boards are connected with corresponding second cells, and the second negative electrode connecting terminal is connected with the second connecting pole piece (7).

Description

Data acquisition assembly for battery cell and battery pack Technical Field The utility model relates to the technical field of lithium batteries, in particular to a data acquisition assembly for a battery cell and a battery pack. Background Along with the continuous development of new energy technology, the power battery technology is widely applied to various fields of life and production, and as one of basic units of a power battery, a battery pack consists of a plurality of battery cells or battery modules, and each battery cell or module is connected in a serial or parallel manner to form the battery pack. In the application process, in order to clearly control the actual use condition of each electric core or battery module, so as to accurately control the electric core or battery module, improve the service life and the use safety, a corresponding data acquisition cable and a corresponding communication cable are often required to be configured for each electric core or battery module, so as to acquire the battery information of each electric core or battery module in real time. However, in the practical application process, the above configuration mode needs to lay a large number of cables in the battery pack, on one hand, the extra space is occupied, and on the other hand, the cost is higher because the laid cables are too long. Disclosure of utility model The utility model mainly aims to provide a data acquisition component for a battery cell and a battery pack, which are used for solving the problems of overlong antenna bus layout and higher production cost in the prior art. In order to achieve the above object, according to an aspect of the present utility model, there is provided a data acquisition assembly for a battery cell, including a first printed circuit board including a first circuit board, a first negative electrode connection terminal and a first positive electrode connection terminal, the first negative electrode connection terminal and the first positive electrode connection terminal being disposed at opposite ends of the first circuit board in a first direction so as to be capable of acquiring voltage information of the battery cell, a second printed circuit board including a second circuit board, and a second negative electrode connection terminal and a second positive electrode connection terminal respectively disposed on the second circuit board, the first negative electrode connection terminal and the second positive electrode connection terminal being sequentially disposed in a second direction so as to be capable of acquiring voltage information of another battery cell, an included angle being formed between the second direction and the first direction, acquisition lines being disposed in the first circuit board and the second circuit board, an antenna bus being disposed in the second direction and being disposed in correspondence to the acquisition lines in a vertical direction, the antenna bus being in communication connection with the acquisition lines. Through the specific layout of the two printed circuit boards and the Antenna Bus (Bus Antenna) matched with the two printed circuit boards, the efficient data acquisition and communication of the single-row battery cells can be realized, further, the use of cables is reduced, the cost is reduced, and meanwhile, the stability and the efficiency of signal transmission are improved. Further, the first printed circuit board further comprises a first electronic component electrically connected with the first circuit board, the first electronic component is arranged at the positive end of the first circuit board, and the second printed circuit board further comprises a second electronic component electrically connected with the second circuit board, and the second electronic component is arranged at the negative end of the second circuit board. In the above arrangement, the information such as the voltage and the temperature of the battery core can be acquired, and meanwhile, the use of an external connector is reduced, and the structure of the battery pack is simplified. Further, be equipped with first collection line in the first circuit board, be equipped with the second collection line in the second circuit board, first collection line is located the positive pole end of first circuit board, and the second collection line is located the negative pole end of second circuit board, and the antenna bus is connected with first collection line and second collection line wireless communication respectively. In the above-mentioned setting, through setting up the collection line in PCB inside, carry out wireless communication with the antenna bus, realize the non-contact collection to electric core information, ensured data transmission's stability and accuracy. Further, the data acquisition component for the battery cell further comprises a limiting structure arranged on the arrangement path of the antenna bus, so that the antenna b