Battery module integrated busbar

Abstract

The utility model discloses a battery module integrated busbar, which belongs to the technical field of battery module energy storage and comprises a substrate, a clamping groove is arranged in the middle of the substrate, mounting grooves are arranged on two sides of the clamping groove, the mounting grooves on the two sides are arranged in a staggered manner, the bottom of each mounting groove is communicated with a battery cell in a battery module, and aluminum bars are inserted in the mounting grooves. Through holes are formed in the two ends of the aluminum row, two adjacent battery cells on the battery module are connected through the through holes in the two ends, the aluminum row on one side is connected with a positive electrode output row, and the end, away from the positive electrode output row, of the aluminum row on the other side is connected with a negative electrode output row; the FPC board is installed in the clamping groove, two sides of the FPC board are provided with a voltage acquisition terminal and a temperature acquisition terminal, the voltage acquisition terminal and the temperature acquisition terminal are respectively connected with the FPC board, and the end of the FPC board is provided with an interface. According to the utility model, the aluminum bar is connected with the voltage acquisition terminal and the temperature acquisition terminal, so that the voltage and the temperature inside the battery module can be monitored in real time if the inside of the battery module fails.

Description

Technical Field

[0001] The utility model belongs to the technical field of battery module energy storage, and particularly relates to a battery module integrated busbar. Background Art

[0002] Under the pressure of energy crisis and environmental pollution, safety, environmental protection and energy saving have become the current themes. In many industries, it is necessary to combine battery cells into battery modules to achieve the purpose of energy storage, and finally apply them to various fields. In the energy storage system, hundreds or thousands of single batteries are often connected in series and parallel to form a battery module. The reliability of the connection solution between batteries is related to the safety of the entire energy storage system.

[0003] In the existing single-cell battery module, an integrated busbar is usually used to connect the single-cell batteries. However, it is difficult for the existing integrated busbar to monitor the temperature, voltage and other data inside the battery module in real time. In the monitoring process, the monitoring equipment (thermistor, temperature sensor, etc.) is not well protected and is easily damaged. At the same time, the conductive parts (aluminum busbar, etc.) on the existing integrated busbar are not easy to prevent and weld, and the installation stability is poor. Utility Model Content

[0004] The purpose of the utility model is to provide a battery module integrated busbar, thereby overcoming the problems of poor installation stability of conductive parts, inability to monitor the temperature of the battery module in real time, and easy damage to the monitoring equipment. The specific technical solution is as follows:

[0005] A battery module integrated busbar comprises: a base plate, a card slot is provided in the middle of the base plate, mounting slots are provided on both sides of the card slot, the mounting slots on both sides are arranged alternately, the bottom of the mounting slot is connected to the battery cell in the battery module, an aluminum bar is inserted in the mounting slot, through holes are provided at both ends of the aluminum bar, and the through holes at both ends connect two adjacent battery cells on the battery module, wherein the aluminum bar on one side is connected to the positive output bar, and the end of the aluminum bar on the other side away from the positive output bar is connected to the negative output bar;

[0006] An FPC board is installed in the card slot, voltage collection terminals and temperature collection terminals are provided on both sides of the FPC board, the voltage collection terminals and temperature collection terminals are respectively connected to the FPC board, and an interface is provided at the end of the FPC board.

[0007] Preferably, the voltage collection terminal includes a thermistor and a protective element;

[0008] The protective member is provided with a bayonet, both ends of the bayonet are provided with protruding arc-shaped plates, and the thermistor is arranged in the middle position of the bayonet.

[0009] Preferably, the mounting groove is provided with a circular through-hole corresponding to the through-hole.

[0010] Preferably, a first limiting column is provided in the installation groove, and a first limiting hole corresponding to the first limiting column is provided on the aluminum bar. During installation, the first limiting column is arranged through the first limiting hole.

[0011] Preferably, the FPC board is in a bifurcated structure, and the bifurcated structure is respectively clamped on two sides of the card slot.

[0012] Preferably, a plurality of circular ventilation holes are provided at the hollowed-out positions of the card slot corresponding to the FPC bifurcation structure.

[0013] Preferably, a plurality of strip-shaped heat dissipation holes are provided on the substrate.

[0014] Preferably, second limiting columns are provided on both sides of the card slot, and second limiting holes corresponding to the second limiting columns are opened on the FPC board.

[0015] Preferably, a circular welding groove is provided around the through hole of the aluminum row.

[0016] Compared with the existing technology, the utility model has the following beneficial effects:

[0017] 1. In the utility model, by connecting the voltage collection terminal and the temperature collection terminal to the aluminum busbar and transmitting the information through the FPC board, the internal voltage and temperature of the battery module can be monitored in real time. If a fault occurs inside the battery module, the abnormality of the battery module can be discovered in time.

[0018] 2. In the utility model, the protective element plays a protective role on the thermistor for collecting voltage, thereby preventing the thermistor from being damaged.

[0019] 3. In the utility model, the first limiting column and the first limiting hole, the second limiting column and the second limiting hole cooperate with each other, so that the aluminum bar can be stably clamped in the installation groove, and the FPC board can be stably clamped in the clamping groove, preventing the aluminum bar and the FPC board from sliding, resulting in poor contact between the aluminum bar and the battery cell, and poor release between the FPC board and the aluminum bar. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. In all drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn according to the actual scale.

[0021] Figure 1 It is a schematic diagram of the top structure of the utility model.

[0022] Figure 2 It is a schematic diagram of the bottom structure of the utility model.

[0023] Figure 3 It is a schematic diagram of the top structure of the substrate.

[0024] Figure 4 It is a schematic diagram of the bottom structure of the substrate.

[0025] Figure 5 It is a schematic diagram of the aluminum row structure.

[0026] Figure 6 It is a schematic diagram of the voltage collection terminal structure.

[0027] Description of main reference numerals:

[0028] 1-substrate, 2-card slot, 3-installation slot, 4-aluminum row, 5-through hole, 6-positive output row, 7-negative output row, 8-FPC board, 9-voltage collection terminal, 10-temperature collection terminal, 11-interface, 12-arched portion, 13-circular welding groove, 14-protective member, 15-thermistor, 16-bayonet, 17-arc plate, 18-circular perforation, 19-first limiting column, 20-first limiting hole, 21-ventilation circular hole, 22-strip heat dissipation hole, 23-second limiting column, 24-second limiting hole. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "top", "bottom", "top surface", "bottom surface", "inside", "outside", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0031] In the description of the present utility model, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If the terms "first", "second", "third" are described, they are only used for the purpose of description and distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0032] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. The following is a description of the embodiments of the present invention based on its overall structure.

[0033] Example 1

[0034] See also Figure 1-5 A battery module integrated busbar comprises: a substrate 1, a card slot 2 is provided in the middle of the substrate 1, mounting slots 3 are provided on both sides of the card slot 2, the mounting slots 3 on both sides are staggered, the bottom of the mounting slot 3 is connected to the battery cell in the battery module, an aluminum bar 4 is inserted in the mounting slot 3, through holes 5 are provided at both ends of the aluminum bar 4, and the through holes 5 at both ends connect two adjacent battery cells on the battery module, wherein the aluminum bar 4 on one side is connected to the positive output bar 6, and the end of the aluminum bar 4 on the other side away from the positive output bar 6 is connected to the negative output bar 7; an FPC board 8, the FPC board 8 is installed in the card slot 2, voltage collection terminals 9 and temperature collection terminals 10 are provided on both sides of the FPC board 8, the voltage collection terminals 9 and the temperature collection terminals 10 are respectively connected to the FPC board 8, and an interface 11 is provided at the end of the FPC board 8.

[0035] In the above scheme, the aluminum bar 4 includes an arc-shaped arched portion 12 in the middle for easy placement, and a hole for ventilation and heat dissipation is formed between the arc-shaped arched portion 12 and the mounting groove 3. The arc-shaped arched portion 12 divides the aluminum bar 4 into a first end and a second end. The first end and the second end are both provided with the above-mentioned through hole 5. The size of the aluminum bar 4 corresponds to the size of the mounting groove 3; the size of the FPC board 8 corresponds to the size of the card slot 2, and the card slot 2 is concave as set by the substrate 1. When installing, the aluminum bar 4 is clamped on the mounting groove 3, and the FPC board 8 is clamped. On the card slot 2, the through holes 5 on both ends of the aluminum bar 4 are welded to the battery cell by welding technology. Since the aluminum bar 4 is installed on two rows of staggered mounting slots 3, all the battery cells are connected in series and finally connected to the positive output bar 6 and the negative output bar 7 for output. The voltage collection terminal 9 and the temperature collection terminal 10 are connected to the aluminum bar 4, and the collected voltage and temperature are transmitted to the FPC board 8, which is connected to the external client through the interface 11 to realize real-time monitoring of the voltage and temperature inside the battery module.

[0036] As a preferred embodiment, the voltage collection terminal 9 includes a thermistor 15 and a protective member 14 ; the protective member 14 is provided with a bayonet 16 , both ends of the bayonet 16 are provided with protruding arc plates 17 , and the thermistor 15 is arranged in the middle of the bayonet 16 .

[0037] It can be understood that the protective member 14 is a plate, one end of the protective member 14 is laser welded to the aluminum bar 4, and the other end is connected to the FPC board 8. A hollow bayonet 16 is provided on the end of the protective member 14 close to the aluminum bar 4, and the thermistor 15 is welded to the aluminum bar 4 on the bayonet 16 by laser, wherein raised arc plates 17 are provided on the edges on both sides of the bayonet 16, and the top ends of the two arc plates 17 are bent toward the thermistor 15, thereby protecting the thermistor 15; it is also explained that the temperature acquisition terminal 10 is a temperature sensor.

[0038] As a preferred embodiment, a circular through hole 18 corresponding to the through hole 5 is provided on the mounting groove 3 .

[0039] It can be understood that in order to facilitate welding and connecting the through holes 5 on the aluminum bar 4 to the battery cell, circular through holes 18 are provided in the mounting grooves 3 at the positions of the through holes 5 at both ends of the aluminum bar 4, so as to facilitate welding the aluminum bar 4 to the battery cell through the circular through holes 18 and the through holes 5.

[0040] As a preferred embodiment, a first limiting column 19 is provided in the installation groove 3, and a first limiting hole 20 corresponding to the first limiting column 19 is provided on the aluminum bar 4. During installation, the first limiting column 19 is installed through the first limiting hole 20.

[0041] It can be understood that in this embodiment, two first limiting columns 19 are set on the diagonal line of the installation groove 3. When installing the aluminum bar 4, the first limiting hole 20 set on the aluminum bar 4 is inserted into the first limiting column 19, so that the aluminum bar 4 can be well clamped in the installation groove 3 to prevent the aluminum bar 4 from sliding and loosening, resulting in the detachment of the welding between the aluminum bar 4 and the battery cell, causing poor contact.

[0042] As a preferred embodiment, the FPC board 8 is in a bifurcated structure, and the bifurcated structure is respectively clamped on two sides of the card slot 2 .

[0043] It can be understood that the FPC board 8 is bifurcated with a hollow structure in the middle, and is installed on both sides of the card slot 2 to facilitate connection with the aluminum bars 4 on both sides to collect the voltage and temperature of the aluminum bars 4 on both sides.

[0044] As a preferred embodiment, a plurality of circular ventilation holes 21 are provided at the hollowed-out positions of the card slot 2 corresponding to the FPC bifurcated structure.

[0045] It can be understood that a plurality of ventilation holes 21 are provided on the card slot 2 corresponding to the bifurcated structure of the FPC to facilitate ventilation and heat dissipation of the battery module.

[0046] As a preferred embodiment, a plurality of strip-shaped heat dissipation holes 22 are provided on the substrate 1 .

[0047] It can be understood that the strip-shaped heat dissipation holes 22 are helpful for ventilation and heat dissipation of the battery module.

[0048] As a preferred embodiment, second limiting columns 23 are provided on both sides of the card slot 2 , and second limiting holes 24 corresponding to the second limiting columns 23 are opened on the FPC board 8 .

[0049] It can be understood that when installing the FPC board 8, inserting the second limiting hole 24 into the second limiting column 23 can better clamp the FPC board 8 on the second limiting hole 24, prevent the FPC board 8 from sliding and causing poor contact of the circuit, and improve the stability of the installation.

[0050] As a preferred embodiment, a circular welding groove 13 is provided around the through hole 5 of the aluminum bar 4 .

[0051] It can be understood that a circular welding groove is arranged around the outer edge of the through hole 5 and around the outside of the through hole 5. During welding, after passing through the through hole 5, a welding block connected to the through hole 5 is formed on the circular welding groove 13, which can generate a certain pulling force on the battery cell, so that the aluminum busbar 4 can be better welded to the battery cell, thereby improving the stability of the welding.

[0052] The foregoing descriptions of specific exemplary embodiments of the present invention are for the purpose of explanation and illustration. These descriptions are not intended to limit the present invention to the precise form disclosed, and it is obvious that many changes and variations can be made based on the above teachings. Although an embodiment of the present invention has been shown and described, this specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. The specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. The purpose of selecting and describing the exemplary embodiments is to explain the specific principles of the present invention and its practical application, so that those skilled in the art can make modifications, substitutions, variations and various selections and changes to the embodiments without creative contribution as needed after reading this specification without departing from the principles and purpose of the present invention, but they are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A battery module integrated busbar, characterized in that: include: A substrate (1), wherein a card slot (2) is provided in the middle of the substrate (1), mounting slots (3) are provided on both sides of the card slot (2), the mounting slots (3) on both sides are arranged alternately, the bottom of the mounting slot (3) is connected to the battery cell in the battery module, an aluminum bar (4) is inserted in the mounting slot (3), through holes (5) are provided at both ends of the aluminum bar (4), and the through holes (5) at both ends connect two adjacent battery cells on the battery module, wherein the aluminum bar (4) on one side is connected to a positive output bar (6), and the end of the aluminum bar (4) on the other side away from the positive output bar (6) is connected to a negative output bar (7); An FPC board (8) is installed in the card slot (2), voltage collection terminals (9) and temperature collection terminals (10) are provided on both sides of the FPC board (8), the voltage collection terminals (9) and temperature collection terminals (10) are respectively connected to the FPC board (8), and an interface (11) is provided at the end of the FPC board (8).

2. A battery module integrated busbar according to claim 1, characterized in that: The voltage collection terminal (9) comprises a thermistor (15) and a protective element (14); The protective member (14) is provided with a bayonet (16), both ends of the bayonet (16) are provided with protruding arc-shaped plates (17), and the thermistor (15) is arranged in the middle of the bayonet (16).

3. The battery module integrated busbar according to claim 1, characterized in that: The mounting groove (3) is provided with a circular through hole (18) corresponding to the through hole (5).

4. The battery module integrated busbar according to claim 1, characterized in that: A first limiting column (19) is provided in the installation groove (3), and a first limiting hole (20) corresponding to the first limiting column (19) is provided on the aluminum bar (4). During installation, the first limiting column (19) is installed through the first limiting hole (20).

5. The battery module integrated busbar according to claim 1, characterized in that: The FPC board (8) is in a bifurcated structure, and the bifurcated structure is respectively clamped on two sides of the clamping slot (2).

6. A battery module integrated busbar according to claim 5, characterized in that: The card slot (2) is provided with a plurality of circular ventilation holes (21) at the hollowed-out positions corresponding to the FPC bifurcated structure.

7. The battery module integrated busbar according to claim 1, characterized in that: The base plate (1) is provided with a plurality of strip-shaped heat dissipation holes (22).

8. The battery module integrated busbar according to claim 1, characterized in that: Second limiting columns (23) are provided on both sides of the card slot (2), and second limiting holes (24) corresponding to the second limiting columns (23) are provided on the FPC board (8).

9. The battery module integrated busbar according to claim 1, characterized in that: A circular welding groove (13) is provided around the through hole (5) of the aluminum bar (4).

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