CN221262573U - Limiting device suitable for series-parallel batteries - Google Patents

Abstract

As shown in the abstract figure, the limiting device suitable for the series-parallel battery comprises battery core modules connected side by side, limiting pieces arranged on two sides of the battery core modules and end plates connected to two ends of the limiting pieces, wherein the battery modules are arranged to be of required lengths according to battery pack space, and the limitation of the battery packs on the lengths of the battery modules is reduced by arranging multiple rows of battery modules. The limiting piece is arranged according to the length of the battery module, and the battery module and the limiting piece are unstable due to the fact that the battery module is arranged in multiple rows, so that the limiting plate and the supporting plate are arranged at the upper end and the lower end of the limiting piece respectively, the limiting plate and the supporting plate are lapped on the upper surface and the lower surface of the battery module, the position of the battery module relative to the limiting piece is determined, the limiting piece and the end plate are arranged on the outer side of the battery module, a limiting frame is formed, and the connection stability of the battery module is guaranteed. The battery module adjusts the internal temperature of the battery by adding the heating film, so that the battery pack is kept to work in a safe temperature range, and the working safety of the battery pack is improved.

Description

Limiting device suitable for series-parallel batteries

Technical Field

The utility model relates to the technical field of power batteries, in particular to a limiting device suitable for series-parallel batteries.

Background

The serial-parallel arrangement of the cells inside the battery pack is a battery assembly mode, wherein the cells are connected together in a serial and parallel mode. In the series arrangement, the positive and negative poles of the cells are connected in sequence to form a long circuit. In parallel arrangement, the positive electrode of the battery core is connected with the positive electrode, and the negative electrode is connected with the negative electrode, so that a parallel circuit is formed. If the voltage and current capacity inside the battery pack needs to be increased, a plurality of batteries can be connected in series, and then a plurality of groups of series batteries are connected in parallel to form a group of series-parallel connected battery packs. The series-parallel arrangement can also improve the reliability and safety of the battery pack, because when one of the cells is defective, the other cells can still function properly. Such an arrangement is commonly used for large capacity batteries in the fields of electric vehicles, portable electronic devices, energy storage systems, and the like.

According to the device, double-row electric cores are arranged, a partition plate is arranged between adjacent electric cores, the partition plate plays a role in insulating heat under the high-temperature state of the adjacent electric cores, foam is arranged on the partition plate to fix the electric cores, in order to improve the quantity of the electric cores in a battery pack, on the basis of the original single-layer electric cores, a layer of electric cores are stacked, a steel ribbon is arranged between each layer of electric core layers, a plastic ribbon is arranged at the bottom, then the steel ribbon and the plastic ribbon are sleeved with a binding module in sequence, electric wires on the steel ribbon and the plastic ribbon are bound, the bound electric wires extend to a connecting end through an end plate, the design of the stacked electric cores can lead to overhigh heat carrying of the battery pack, therefore, a cover plate and a side plate of the battery pack adopt mica plates capable of insulating heat to prevent the overheat failure of the battery pack from affecting the operation of other battery packs, the quantity of the electric cores is greatly improved, the overcurrent capacity of the battery pack is increased, and the energy density of the battery pack is increased under the condition that the space of the battery pack is limited.

However, the device still has the following problems: (1) The stacked battery cells are designed, the number of the battery cells is large, heat dissipation is uneven, the heat dissipation of the two layers of battery cells in the vertical direction can affect the temperature of the two layers of battery cells, the two layers of battery cells dissipate heat to the periphery, the temperature of the periphery of the battery pack is affected, the internal temperature of the battery pack is unstable, and the normal use of the battery pack is affected; (2) The device only through the connection between board and the board, accomplishes the fixed mounting to the electric core, and the stability of battery package is relatively poor.

Disclosure of utility model

The utility model provides a limiting device suitable for series-parallel batteries, which ensures that the temperature inside a battery pack is within a safe range on the premise of improving the overcurrent capacity of the battery pack, improves the safety of the batteries, and improves the stability of the battery pack.

The utility model provides a stop device suitable for series-parallel connection battery, includes the locating part of installing in electric mandrel both sides and connects the end plate at the locating part both ends, locating part upper and lower extreme is equipped with limiting plate, backup pad respectively, limiting plate, backup pad overlap joint are equipped with the heating film above and below electric mandrel group in the junction of locating part and electric mandrel group, and stop device passes through locating part, end plate frame and establishes in electric mandrel group outside.

Preferably, the width of the limiting plate is smaller than that of the supporting plate.

Preferably, the two sides of the end plate are provided with connecting holes, and the connecting holes are connected with limiting holes arranged on the connecting side of the limiting piece.

Preferably, a plurality of end plates are provided, and adjacent end plates are aligned and connected through connecting holes.

Preferably, the top of the end plate is provided with a mounting hole for mounting the insulator and a fixing hole for mounting the battery cell module.

Preferably, the width of the end plate is consistent with the width of the battery cell module.

Preferably, an epoxy plate is provided between the end plate and the cell module.

Preferably, the cell module comprises a cell and a busbar mounted on the cell.

Preferably, the limiting device further comprises an insulating piece, and the insulating piece is covered on the top of the cell module.

Preferably, mounting plates are arranged on two sides of the insulating piece, and the mounting plates are arranged on two sides of the cell module.

In summary, the beneficial effects of the utility model are as follows:

1. Through setting up limiting plate and backup pad on the locating part, guarantee that the position of limiting plate relative battery package is stable, the rethread is connected with the end plate, improves stop device to the installation stability of electric core module.

2. The heating film is arranged in the device, so that the heat dissipation uniformity of the battery pack is ensured, the temperature inside the battery pack is in a safe range, and the running safety of the battery pack is ensured.

3. Through set up multirow electric core module in the battery package to reduce the length restriction of battery package to electric core module.

Drawings

Fig. 1 is an exploded view of the present utility model.

Fig. 2 is a schematic view of the limiting member.

Fig. 3 is a schematic view of an end plate.

Reference numerals: the battery cell module 1, the battery cell 11, the busbar 12, the limiting piece 2, the limiting plate 21, the supporting plate 22, the heating film 23, the limiting hole 24, the end plate 3, the connecting hole 31, the mounting hole 32, the fixing hole 33, the insulator 4, the insulating piece 5, the mounting plate 51 and the epoxy plate 6.

Detailed Description

In order to make the technical problems solved by the present utility model, the technical solutions adopted and the technical effects achieved more clear, the technical solutions of the embodiments of the present utility model will be described in further detail below with reference to the accompanying drawings, and it is obvious that the described embodiments are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to fall within the scope of the utility model.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Wherein the terms "first position" and "second position" are two different positions.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixed or removable, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

As shown in fig. 1-2, a limiting device suitable for series-parallel batteries comprises a battery cell module 1, limiting pieces 2 arranged on two sides of the battery cell module 1 and end plates 3 connected on two ends of the limiting pieces 2, wherein the battery cell module 1 is provided with required length according to a battery pack space, and limitation of battery packs on the length of the battery cell module 1 is reduced by arranging multiple rows of battery cell modules 1. The limiting piece 2 is arranged according to the length of the cell module 1, and the connection between the cell module 1 and the limiting piece 2 is unstable due to the fact that the cell module 1 is arranged in multiple rows, so that limiting plates 21 and supporting plates 22 are arranged at the upper end and the lower end of the limiting piece 2 respectively, the limiting plates 21 and the supporting plates 22 are lapped on the upper surface and the lower surface of the cell module 1, the position of the cell module 1 relative to the limiting piece 2 is determined, the limiting piece 2 and the end plate 3 are installed on the outer side of the cell module 1 to form a limiting frame, and the connection stability of the cell module 1 is guaranteed.

The battery core module 1 regulates the internal temperature of the battery by adding a heating film 23, wherein the heating film 23 is made of a heat conducting material, and when the internal temperature of the battery core module 1 is too high, the heating film 23 conducts heat generated in the battery core module 1 to the external environment so as to reduce the temperature of the battery; when the environmental temperature of the battery cell module 1 is too low, the heating film 23 can provide heat, so that the heat dissipation inside the battery pack is uniform, the battery pack is kept in a proper working temperature range, the battery pack is kept to work in a safe temperature range, and the working safety of the battery pack is improved.

The backup pad 22 is installed to the lower surface of electric core module 1, plays the supporting role to the installation of electric core module 1, and the width setting of backup pad 22 is great, improves the stability of electric core module 1, and limiting plate 21 installs at the electric core module 1 upper surface that is equipped with electric element, for preventing that limiting plate 21 from touching the electric element of electric core module 1, consequently limiting plate 21 width is less for limiting plate 21's width is less than the width of backup pad 22, both improves the installation stability of electric core module 1, improves the security of electric core module 1 simultaneously.

As shown in fig. 2 and 3, in order to further improve stability of the limiting device, connecting holes 31 are formed on two sides of the end plate 3, and corresponding limiting holes 24 are formed on the connecting side of the limiting plate 2 and connected with the connecting holes 31, so that the end plate 3 and the limiting piece 2 are stably connected.

The end plates 3 are connected to two ends of the battery cell module 1, the width of each end plate 3 is consistent with that of the battery cell module 1, the end parts of the battery cell module 1 are completely covered, and the limiting device is used for completely installing the battery pack inside.

Since the battery pack is internally provided with the plurality of rows of the battery core modules 1, the width of the end plates 3 is consistent with that of the battery core modules 1, and the battery pack is provided with the plurality of end plates 3 so as to completely connect two ends of the battery pack, and the adjacent end plates 3 are connected through the connecting holes 31, so that the connection stability between the end plates 3 is ensured.

As shown in fig. 3, the top of the end plate 3 is provided with a mounting hole 32 and a fixing hole 33, the mounting hole 32 is used for mounting the insulator 4, the insulator 4 plays a role in insulation and isolation, current in the battery is prevented from flowing onto the mounting component through the limiting device, the safety of the battery pack is ensured, the battery pack is mounted at a required position through the fixing hole 33, and the stability and convenience of the battery pack mounting are ensured.

As shown in fig. 1, an epoxy plate 6 is disposed between the end plate 3 and the cell module 1, the epoxy plate 6 has excellent insulation performance, current inside the battery pack is prevented from flowing to the outside through the end plate 3, and the epoxy plate 6 has high heat resistance, and can maintain stable performance even at high temperature.

As shown in fig. 1, the battery cell module 1 includes a battery cell 11 for providing current, and a bus bar 12 mounted on the battery cell 11, wherein the bus bar 12 is used for converging the positive electrode and the negative electrode generated inside the battery cell 11 to one place to complete a closed loop of the current, and converging the current of one battery cell 11 to the next battery cell 11 to complete serial and parallel connection of the battery cell module 1.

As shown in fig. 1, the limiting device further includes an insulating member 5, in this embodiment, the insulating member 5 is made of a PC insulating material, and the device replaces a conventional battery cover plate mode, so as to simplify a battery structure, and meanwhile, the PC insulating material is covered on the top of the battery core module 1, so that the risk of short circuit of the battery core module 1 is reduced, and the safety and stability of the battery core module 1 are improved.

As shown in fig. 1, the insulating member 5 is covered above the cell module 1, so that the insulating member 5 is stably mounted on the cell module 1, mounting plates 51 are arranged on two sides of the insulating member 5, and the mounting plates 51 are connected to two sides of the cell module 1, so that the mounting plates 51 completely cover the cell module 1, and the mounting stability of the insulating member 5 is improved through the mounting plates 51.

Claims (10)

1. Limiting device suitable for series-parallel battery, including installing locating part (2) in electric mandrel group (1) both sides and connecting end plate (3) at locating part (2) both ends, its characterized in that, locating part (2) are equipped with limiting plate (21), backup pad (22) respectively on the lower extreme, limiting plate (21), backup pad (22) overlap joint are equipped with heating film (23) below on electric mandrel group (1), the junction of locating part (2) and electric mandrel group (1), and limiting device passes through locating part (2), end plate (3) frame and establishes in electric mandrel group (1) outside.

2. A limiting device for series-parallel batteries according to claim 1, characterized in that the width of the limiting plate (21) is smaller than the width of the support plate (22).

3. The limiting device for the series-parallel battery according to claim 1, wherein the two sides of the end plate (3) are provided with connecting holes (31), and the connecting holes (31) are connected with limiting holes (24) arranged on the connecting side of the limiting piece (2).

4. A spacing device for series-parallel batteries according to claim 3, characterized in that the end plates (3) are provided in plurality, and adjacent end plates (3) are connected in alignment by connecting holes (31).

5. The limiting device for the series-parallel battery according to claim 1, wherein the top of the end plate (3) is provided with a mounting hole (32) for mounting an insulator (4) and a fixing hole (33) for mounting the battery cell module (1).

6. A limiting device for series-parallel cells according to claim 1, characterized in that the width of the end plate (3) corresponds to the width of the cell module (1).

7. A limiting device for series-parallel batteries according to claim 1, characterized in that an epoxy plate (6) is arranged between the end plate (3) and the cell module (1).

8. The limiting device for series-parallel batteries according to claim 1, wherein the battery cell module (1) comprises a battery cell (11) and a bus bar (12) mounted on the battery cell (11).

9. The limiting device for the series-parallel battery according to claim 1, further comprising an insulating member (5), wherein the insulating member (5) is covered on the top of the battery cell module (1).

10. The limiting device for the series-parallel battery according to claim 9, wherein mounting plates (51) are arranged on two sides of the insulating piece (5), and the mounting plates (51) are arranged on two sides of the battery cell module (1).