CN219457967U - Battery module signal acquisition structure and battery pack - Google Patents
Battery module signal acquisition structure and battery pack Download PDFInfo
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- CN219457967U CN219457967U CN202320722641.2U CN202320722641U CN219457967U CN 219457967 U CN219457967 U CN 219457967U CN 202320722641 U CN202320722641 U CN 202320722641U CN 219457967 U CN219457967 U CN 219457967U
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- circuit board
- battery module
- signal acquisition
- battery
- electrode connecting
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The utility model relates to the field of electrochemical energy storage, in particular to a battery module signal acquisition structure and a battery pack, wherein the acquisition structure comprises a circuit board, electrode connecting sheets and a temperature acquisition module, a plurality of nuts are arranged on the circuit board, the electrode connecting sheets are connected with the nuts through bolts, and the electrode connecting sheets are used for being connected with an electric core; the nut and the temperature acquisition module are respectively positioned on two side surfaces of the circuit board, and the temperature acquisition module is abutted with the electrode connecting sheet; or the nut and the temperature acquisition module are positioned on the same side face of the circuit board, and the temperature acquisition module is abutted with the nut. The utility model adopts the bolt to connect the electrode connecting sheet and the circuit board, thereby being convenient for the assembly, disassembly and maintenance of the circuit board; the NTC temperature sensor is adopted to indirectly monitor the temperature of the battery cell, and the aluminum electrode connecting sheet is adopted, so that the overall cost is lower.
Description
Technical Field
The utility model relates to the field of electrochemical energy storage, in particular to a battery module signal acquisition structure and a battery pack.
Background
With the development of the electrochemical energy storage industry, the energy density requirement on the energy storage battery system is higher and higher. The prior battery module adopts a flexible circuit board to collect voltage and temperature information of the battery core, and adopts a nickel material or aluminum nickel-plated electrode connecting sheet to connect the electrode connecting sheet with the flexible circuit board in a welding way. In the use, when the circuit board damages and needs to be changed, need handle electrode connection piece and circuit board welded part, have the trouble not enough of circuit board change. In addition, the welded electric connection sheet needs to adopt nickel plating and other processes, and the defect of high overall cost of the battery module exists. Therefore, a technical scheme is needed at present to solve the technical problems that the welding of the existing circuit board and the electrode connecting sheet is difficult to disassemble and maintain, the cost is high, and the like.
Disclosure of Invention
The utility model aims at: aiming at the technical problems that the existing circuit board and electrode connecting sheet are not easy to detach and maintain, the cost is high and the like, the signal acquisition structure of the battery module and the battery pack are provided.
In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:
the signal acquisition structure of the battery module comprises a circuit board, an electrode connecting sheet and a temperature acquisition module, wherein a plurality of nuts are arranged on the circuit board in an arrayed manner, the electrode connecting sheet is connected with the nuts through bolts, and the electrode connecting sheet is used for being connected with an electric core; the nut and the temperature acquisition module are respectively positioned on two side surfaces of the circuit board, and the temperature acquisition module is abutted with the electrode connecting sheet; or the nut and the temperature acquisition module are positioned on the same side face of the circuit board, and the temperature acquisition module is abutted with the nut.
According to the signal acquisition structure of the battery module, the plurality of nuts are arranged on the circuit board, so that the nuts are connected with the electrode connecting pieces through bolts, the electrode connecting pieces are tightly contacted with the electrodes of the battery core while the electrode connecting pieces are fixed, and the acquisition of battery signals is realized; the temperature acquisition module and the nuts are arranged on two side surfaces of the circuit board, the temperature acquisition module is abutted against the electrode connecting sheet, and the temperature of the battery cell is indirectly acquired through acquiring the temperature on the electrode connecting sheet; or the temperature acquisition module and the nut are arranged on the same side face of the circuit board, the temperature acquisition module is abutted with the nut, and the temperature of the battery cell is indirectly acquired through the electrode connecting sheet after the temperature on the nut is acquired.
As a preferable scheme of the utility model, the nut comprises a patch nut, and the patch nut is connected with the circuit board in a welding way; the temperature acquisition module comprises an NTC temperature sensor, and the NTC temperature sensor is connected with the circuit board in a welding way. The nut adopts the paster nut, and the mode such as accessible reflow soldering realizes the welding with the circuit board, adopts NTC temperature sensor to have advantages such as small size, accessible paster and passes the mode welding of reflow soldering with the circuit board.
As a preferable scheme of the utility model, the patch nut and the NTC temperature sensor are respectively welded on two side surfaces of a circuit board, the circuit board is clamped between the patch nut and the electrode connecting sheet, and the upper surface of the NTC temperature sensor is abutted with the lower bottom surface of the electrode connecting sheet. The patch nut and the NTC temperature sensor are respectively arranged on two side surfaces of the circuit board, so that the circuit board is clamped between the patch nut and the electrode connecting sheet. The temperature on the electrode connecting sheet is collected through the abutting connection of the NTC temperature sensor and the electrode connecting sheet, and the temperature of the current core is indirectly collected through the electrode connecting sheet by the NTC temperature sensor.
As a preferable scheme of the utility model, the patch nut and the NTC temperature sensor are welded on the same side face of the circuit board, the NTC temperature sensor is arranged around the patch nut, and the NTC temperature sensor is abutted with the outer surface of the patch nut. Through setting up paster nut and NTC temperature sensor in the same side of circuit board, make NTC temperature sensor and paster nut butt gather the temperature on the paster nut, NTC temperature sensor gathers the temperature of electric core indirectly through paster nut, electrode connection piece.
As a preferred embodiment of the present utility model, the NTC temperature sensor is disposed in a vertical projection area of the electrode tab and the circuit board. Through setting up NTC temperature sensor in the vertical projection region of electrode connection piece and circuit board, can ensure NTC temperature sensor can with electrode connection piece butt, accurate temperature of detecting the electrode connection piece, and then detect the temperature of electric core.
As a preferable scheme of the utility model, the circuit board is provided with a plurality of extending parts, the extending parts and the circuit board are integrally formed structural parts, the extending parts are arranged along the length direction of the circuit board, the extending parts are arranged in a staggered mode along the width direction of the circuit board, and the nut is arranged on the extending parts.
As a preferred scheme of the utility model, the circuit board is provided with a through explosion-proof hole, and the explosion-proof hole is used for being connected with an explosion-proof valve of the battery cell in an adapting way. The explosion-proof hole is matched with the explosion-proof valve of the battery cell, and the explosion-proof hole is arranged to facilitate the explosion-proof valve to release the reaction gas in the battery cell, so that the safety of the battery cell is ensured.
As a preferable scheme of the utility model, the circuit board is provided with at least one fixing part, and the fixing part is provided with a fixing hole which is used for fixing the circuit board; one end of the circuit board in the length direction is provided with a bayonet used for positioning the circuit board, and the other end of the circuit board opposite to the bayonet is provided with a communication interface. The fixed part is arranged to be connected with the battery box to fix the circuit board, the buckle is arranged to enable the circuit board to be easier to assemble on the battery box, the communication interface and the bayonet are staggered, the arrangement position is reasonable, and the circuit board is more convenient to install.
As a preferable scheme of the utility model, the electrode connecting sheet is made of aluminum. The electrode connecting sheet of aluminum material can be directly electrically connected with the circuit board, and compared with the existing nickel-plated electrode connecting sheet, the electrode connecting sheet omits a nickel-plating link and has lower cost.
The battery pack comprises a battery box, an electric core and the battery module signal acquisition structure, wherein the electric core is arranged in the battery box, the battery module signal acquisition structure is in limiting connection with the battery box, a circuit board of the battery module signal acquisition structure is arranged between a positive electrode and a negative electrode of the electric core, and an electrode connecting sheet of the battery module signal acquisition structure is connected with an electrode of the electric core.
As a preferable scheme of the utility model, the battery module signal acquisition device comprises a plurality of rows of electric cores which are arranged in a row, wherein the top of each electric core is correspondingly provided with one battery module signal acquisition structure, and the battery module signal acquisition structures in adjacent rows are connected through bonding tabs. Under the condition that a plurality of electric cores are arranged in the battery box, a battery module signal acquisition structure is correspondingly arranged at the top of each row of electric cores, and then electrode connecting sheets on adjacent circuit boards are connected by adopting bonding tabs, so that signal acquisition of the electric cores in multiple rows is realized.
As a preferable scheme of the utility model, at least two battery module signal acquisition structures and at least one connecting piece are arranged in the battery pack, and the connecting piece is used for connecting two adjacent circuit boards.
The utility model relates to a battery module signal acquisition structure, which adopts a patch nut and an NTC temperature sensor, is fixed on a circuit board in a welding mode, and adopts a bolt mode to fix an electrode connecting sheet and the circuit board, and has the beneficial effects that: 1. the assembly, disassembly and maintenance of the circuit board are convenient; 2. the electrode connecting sheet made of aluminum is fixed by bolts, so that the overall cost is lower; 3. the patch nut and the NTC temperature sensor are adopted for welding in a reflow welding mode and the like, so that the production efficiency can be effectively improved;
according to the battery pack, the battery cells are connected in the battery box in a limiting manner, the relative positions of the electrodes and the battery box are fixed, the battery module signal acquisition structure is fixedly connected with the battery box, and the relative positions of the electrode connecting sheets and the electrodes are fixed, so that the electrodes are communicated with the electrode connecting sheets to acquire battery signals, and the battery module signal acquisition structure is arranged in a modularized manner, so that the assembly efficiency of the battery pack is improved.
Drawings
Fig. 1 is a schematic structural diagram of a signal acquisition structure of a battery module according to embodiment 1;
fig. 2 is a schematic structural diagram of a circuit board of embodiment 1;
fig. 3 is a partially enlarged schematic structural view of the circuit board of embodiment 1;
fig. 4 is a schematic side view of a signal acquisition structure of a battery module according to embodiment 1;
fig. 5 is a schematic structural view of an electrode connecting sheet of embodiment 1;
fig. 6 is a schematic structural view of a circuit board of embodiment 2;
fig. 7 is a partially enlarged structural schematic diagram of the circuit board of embodiment 2;
fig. 8 is a schematic structural diagram of a signal acquisition structure of a battery module according to embodiment 2;
fig. 9 is a partially enlarged schematic top view of the circuit board of embodiment 3;
fig. 10 is a schematic structural view of a battery pack of embodiment 4;
fig. 11 is a schematic diagram of the connection structure of the signal acquisition structure of the battery module of embodiment 5.
Icon:
the device comprises a circuit board 1, an electrode connecting sheet 2, a temperature collecting module 3, a nut 4, an extending part 5, a explosion-proof hole 6, a fixing part 7, a bayonet 8, a communication interface 9, a protruding piece 10, a connecting hole 11, a bending part 12, a battery box 13, a battery cell 14 and a bonding sheet 15.
Detailed Description
The present utility model will be described in detail with reference to the accompanying drawings.
The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.
Example 1
The signal acquisition structure of the battery module shown in fig. 1-5 comprises a circuit board 1, an electrode connecting sheet 2 and a temperature acquisition module 3, wherein a plurality of nuts 4 are arranged on the circuit board 1, the electrode connecting sheet 2 is connected with the nuts 4 by bolts, and the electrode connecting sheet 2 is used for being connected with an electric core 14; the nut 4 and the temperature acquisition module 3 are respectively positioned on two side surfaces of the circuit board 1, and the temperature acquisition module 3 is abutted to the electrode connecting sheet 2.
Specifically, the circuit board 1 is provided with a plurality of extending parts 5, the extending parts 5 and the circuit board 1 are integrally formed structural members, seven extending parts 5 are arranged and distributed on the length edges of the circuit board 1, four extending parts are arranged on one length edge, three extending parts 5 are rectangular bulges, the extending parts 5 are arranged along the length direction of the circuit board 1, and the extending parts 5 are arranged in a staggered manner along the width direction of the circuit board 1; the circuit board 1 is also provided with two fixing parts 7 which are integrally formed with the circuit board 1, and the fixing parts 7 are provided with fixing holes for being connected with the battery box 13; the bayonet 8 is arranged at one end of the circuit board 1 in the length direction, the bayonet 8 can be matched with the protruding structure arranged on the battery box 13 to limit the circuit board 1, the horizontal protruding piece 10 is arranged at one end of the circuit board 1 far away from the bayonet 8, the communication interface 9 is arranged on the protruding piece 10, and the bayonet 8 and the communication interface 9 are arranged in a staggered mode, so that the assembly efficiency can be accelerated.
Specifically, a nut 4 is arranged on the extension part 5, the nut 4 is a welded patch nut, a through hole is formed in the circuit board 1 corresponding to a screw hole of the patch nut, and the through hole is used for penetrating a bolt to fix the electrode connecting sheet 2 on the circuit board 1; two patch nuts are arranged on each extension part 5; all patch nuts are the same in height and are located on the same side of the circuit board 1, so that different electrode connecting pieces 2 are located on the same plane, and after the circuit board 1 is mounted on the battery box 13, each electrode connecting piece 2 can be connected with an electrode of the battery cell 14.
Specifically, the patch nut is welded with the circuit board 1, and the temperature acquisition module 3 is an NTC temperature sensor welded on the circuit board 1; the patch nut and the NTC temperature sensor are respectively welded on two side surfaces of the circuit board 1, so that the circuit board 1 is clamped between the patch nut and the electrode connecting sheet 2, the upper surface of the NTC temperature sensor is abutted with the lower bottom surface of the electrode connecting sheet 2, and the temperature of the battery cell 14 is indirectly acquired by acquiring the temperature on the electrode connecting sheet 2.
Specifically, the circuit board 1 is provided with a through explosion-proof hole 6, the explosion-proof hole 6 is used for nesting an explosion-proof valve of the battery cell 14, so that the explosion-proof valve can conveniently discharge reaction gas of the battery cell 14, the safety of the battery cell 14 is ensured, and the setting position of the explosion-proof hole 6 is matched with the position of the explosion-proof valve of the battery cell 14.
Preferably, the electrode connecting piece 2 is provided with a bending part 12 and two connecting holes 11, the bending part 12 is positioned between the two connecting holes 11, the connecting holes 11 are matched with patch nuts, the two connecting holes 11 simultaneously fix the electrode connecting piece 2, so that the electrode connecting piece 2 is connected more stably, and the bending part is used for releasing stress, thereby facilitating the installation of the electrode connecting piece 2.
Example 2
The structure of the battery module signal acquisition structure shown in fig. 6-8 is the same as that of embodiment 1, and is different from embodiment 1 in that the patch nut and the NTC temperature sensor are welded on the same side of the circuit board 1, the NTC temperature sensor is disposed around the patch nut, and the NTC temperature sensor is abutted to the outer surface of the patch nut.
Preferably, the NTC temperature sensor is disposed in a vertical projection area of the electrode connection piece 2 and the circuit board 1, so that the electrode connection piece 2 can be abutted against the NTC temperature sensor. The NTC temperature sensor indirectly detects the temperature of the battery cell through the patch nut and the electrode connecting sheet
Example 3
The structure of the battery module signal acquisition structure shown in fig. 9 is the same as that of embodiment 1, except that one side of the NTC temperature sensor is abutted against the side of the electrode tab 2.
Example 4
The battery pack shown in fig. 10 comprises a battery box 13, a battery cell 14 and a battery module signal acquisition structure of embodiment 1, embodiment 2 or embodiment 3, wherein the battery cell 14 is arranged in the battery box 13, the battery module signal acquisition structure is in limit connection with the battery box 13, a circuit board 1 of the battery module signal acquisition structure is arranged between a positive electrode and a negative electrode of the battery cell 14, and an electrode connecting sheet 2 of the battery module signal acquisition structure is connected with an electrode of the battery cell 14.
Specifically, a plurality of electric cores 14 are disposed in the battery box 13, adjacent electric cores 14 are bonded and disposed, and the electric cores 14 are arranged in a row.
Specifically, adjacent battery packs may be connected by the strap 15, and the strap 15 may be connected to the fixing portion 7 of the battery module signal collecting structure.
Example 5
As shown in fig. 11, a battery pack has the same structure as that of embodiment 3, and is different from embodiment 4 in that the battery pack includes a plurality of rows of the battery cells 14 arranged in a row, the top of each row of the battery cells 14 is correspondingly provided with a battery module signal acquisition structure, and the battery module signal acquisition structures of adjacent rows are connected by a strap 15.
Specifically, the battery cells 14 are arranged in two rows, the battery module signal acquisition structures are arranged in two rows, and the bonding tabs 15 are arranged in one row.
Specifically, the same sheet structural member as in example 4 was used for the strap 15.
Preferably, the overlapping pieces 15 are provided in two.
The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.
Claims (10)
1. The signal acquisition structure of the battery module is characterized by comprising a circuit board (1), electrode connecting pieces (2) and a temperature acquisition module (3), wherein a plurality of nuts (4) are arranged on the circuit board (1), the electrode connecting pieces (2) are connected with the nuts (4) through bolts, and the electrode connecting pieces (2) are used for being connected with an electric core (14); the nut (4) and the temperature acquisition module (3) are respectively positioned on two side surfaces of the circuit board (1), and the temperature acquisition module (3) is abutted with the electrode connecting sheet (2); or, the nut (4) and the temperature acquisition module (3) are positioned on the same side face of the circuit board (1), and the temperature acquisition module (3) is abutted with the nut (4).
2. A battery module signal acquisition structure according to claim 1, wherein the nut (4) comprises a patch nut, and the patch nut is welded to the circuit board (1); the temperature acquisition module (3) comprises an NTC temperature sensor, and the NTC temperature sensor is connected with the circuit board (1) in a welding mode.
3. The battery module signal acquisition structure according to claim 2, wherein the patch nut and the NTC temperature sensor are welded on two sides of a circuit board (1), the circuit board (1) is clamped between the patch nut and the electrode connecting sheet (2), and an upper surface of the NTC temperature sensor is abutted to a lower bottom surface of the electrode connecting sheet (2).
4. The battery module signal acquisition structure according to claim 2, wherein the patch nut and the NTC temperature sensor are welded on the same side of the circuit board (1), the NTC temperature sensor is disposed around the patch nut, and the NTC temperature sensor is abutted to the outer surface of the patch nut.
5. The signal acquisition structure of a battery module according to claim 4, wherein the NTC temperature sensor is disposed in a projection area of the electrode tab (2) and the circuit board (1).
6. The battery module signal acquisition structure according to claim 1, wherein the circuit board (1) is provided with a plurality of extension portions (5), the extension portions (5) and the circuit board (1) are integrally formed structural members, the extension portions (5) are arranged in a length direction of the circuit board (1), the extension portions (5) are arranged in a staggered manner in a width direction of the circuit board (1), and the nuts (4) are arranged on the extension portions (5).
7. The battery module signal acquisition structure according to claim 6, wherein the circuit board (1) is provided with a through explosion-proof hole (6), and the explosion-proof hole (6) is used for being connected with an explosion-proof valve of the battery cell (14) in an adapting way.
8. The battery module signal acquisition structure according to any one of claims 1 to 7, wherein the circuit board (1) is provided with at least one fixing portion (7), and the fixing portion (7) is provided with a fixing hole for fixing the circuit board (1); one end of the circuit board (1) in the length direction is provided with a bayonet (8) for positioning the circuit board (1), and the other end of the circuit board (1) opposite to the bayonet (8) is provided with a communication interface (9).
9. The battery pack is characterized by comprising a battery box (13), an electric core (14) and the battery module signal acquisition structure according to any one of claims 1-8, wherein the electric core (14) is arranged in the battery box (13), the battery module signal acquisition structure is in limit connection with the battery box (13), a circuit board (1) of the battery module signal acquisition structure is arranged between a positive electrode and a negative electrode of the electric core (14), and an electrode connecting sheet (2) of the battery module signal acquisition structure is connected to an electrode of the electric core (14).
10. A battery pack according to claim 9, comprising a plurality of rows of said cells (14) arranged in a row, wherein a top of each row of said cells (14) is provided with a corresponding one of said battery module signal collecting structures, and adjacent rows of said battery module signal collecting structures are connected by a strap (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320722641.2U CN219457967U (en) | 2023-04-04 | 2023-04-04 | Battery module signal acquisition structure and battery pack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320722641.2U CN219457967U (en) | 2023-04-04 | 2023-04-04 | Battery module signal acquisition structure and battery pack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219457967U true CN219457967U (en) | 2023-08-01 |
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ID=87418371
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320722641.2U Active CN219457967U (en) | 2023-04-04 | 2023-04-04 | Battery module signal acquisition structure and battery pack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219457967U (en) |
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2023
- 2023-04-04 CN CN202320722641.2U patent/CN219457967U/en active Active
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